From f2589bff1ce8b94cebc044e5dfeac4d4e8701cbc Mon Sep 17 00:00:00 2001 From: Ricardo Ribalda Delgado Date: Tue, 9 Sep 2014 21:39:24 +0200 Subject: [PATCH 001/371] xtensa/uapi: Add definition of TIOC[SG]RS485 Commit: e676253b19b2d269cccf67fdb1592120a0cd0676 [3/21] serial/8250: Add support for RS485 IOCTLs, adds support for RS485 ioctls for 825_core on all the archs. Unfortunaltely the definition of TIOCSRS485 and TIOCGRS485 was missing on the ioctls.h file Reported-by: kbuild test robot Signed-off-by: Ricardo Ribalda Delgado Signed-off-by: Chris Zankel --- arch/xtensa/include/uapi/asm/ioctls.h | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/xtensa/include/uapi/asm/ioctls.h b/arch/xtensa/include/uapi/asm/ioctls.h index a47909f0c34b..518954e74e6d 100644 --- a/arch/xtensa/include/uapi/asm/ioctls.h +++ b/arch/xtensa/include/uapi/asm/ioctls.h @@ -95,6 +95,8 @@ #define TCSETS2 _IOW('T', 43, struct termios2) #define TCSETSW2 _IOW('T', 44, struct termios2) #define TCSETSF2 _IOW('T', 45, struct termios2) +#define TIOCGRS485 _IOR('T', 46, struct serial_rs485) +#define TIOCSRS485 _IOWR('T', 47, struct serial_rs485) #define TIOCGPTN _IOR('T',0x30, unsigned int) /* Get Pty Number (of pty-mux device) */ #define TIOCSPTLCK _IOW('T',0x31, int) /* Lock/unlock Pty */ #define TIOCGDEV _IOR('T',0x32, unsigned int) /* Get primary device node of /dev/console */ From a211276a8e4dbafbcd492ae3bee84a4d6db3fb75 Mon Sep 17 00:00:00 2001 From: Max Filippov Date: Wed, 10 Sep 2014 21:05:21 -0700 Subject: [PATCH 002/371] xtensa: implement pgprot_noncached The default pgprot_noncached doesn't do anything. This leads to issues when drivers rely on it to disable caching in userspace mappings. Implement pgprot_noncached properly so that caching of userspace mappings could be controlled. Signed-off-by: Max Filippov --- arch/xtensa/include/asm/pgtable.h | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/xtensa/include/asm/pgtable.h b/arch/xtensa/include/asm/pgtable.h index b2173e5da601..0383aed59121 100644 --- a/arch/xtensa/include/asm/pgtable.h +++ b/arch/xtensa/include/asm/pgtable.h @@ -277,6 +277,8 @@ static inline pte_t pte_mkwrite(pte_t pte) static inline pte_t pte_mkspecial(pte_t pte) { return pte; } +#define pgprot_noncached(prot) (__pgprot(pgprot_val(prot) & ~_PAGE_CA_MASK)) + /* * Conversion functions: convert a page and protection to a page entry, * and a page entry and page directory to the page they refer to. From 7a0684cdbd3845fe174832ed01515a6176eac713 Mon Sep 17 00:00:00 2001 From: Max Filippov Date: Wed, 27 Aug 2014 14:54:48 +0400 Subject: [PATCH 003/371] xtensa: ISS: add BLOCK dependency to BLK_DEV_SIMDISK Signed-off-by: Max Filippov --- arch/xtensa/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/xtensa/Kconfig b/arch/xtensa/Kconfig index 49c6c3d94449..390bafed3f34 100644 --- a/arch/xtensa/Kconfig +++ b/arch/xtensa/Kconfig @@ -367,7 +367,7 @@ config BUILTIN_DTB config BLK_DEV_SIMDISK tristate "Host file-based simulated block device support" default n - depends on XTENSA_PLATFORM_ISS + depends on XTENSA_PLATFORM_ISS && BLOCK help Create block devices that map to files in the host file system. Device binding to host file may be changed at runtime via proc From bb550fd5c3429bf56f547c9907db2c396027c9a4 Mon Sep 17 00:00:00 2001 From: Max Filippov Date: Wed, 1 Oct 2014 22:18:00 +0400 Subject: [PATCH 004/371] xtensa: add seccomp, getrandom, and memfd_create syscalls Signed-off-by: Max Filippov --- arch/xtensa/include/uapi/asm/unistd.h | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/arch/xtensa/include/uapi/asm/unistd.h b/arch/xtensa/include/uapi/asm/unistd.h index 8883fc877c5c..ee7b1527666b 100644 --- a/arch/xtensa/include/uapi/asm/unistd.h +++ b/arch/xtensa/include/uapi/asm/unistd.h @@ -742,7 +742,14 @@ __SYSCALL(335, sys_sched_getattr, 3) #define __NR_renameat2 336 __SYSCALL(336, sys_renameat2, 5) -#define __NR_syscall_count 337 +#define __NR_seccomp 337 +__SYSCALL(337, sys_seccomp, 3) +#define __NR_getrandom 338 +__SYSCALL(338, sys_getrandom, 3) +#define __NR_memfd_create 339 +__SYSCALL(339, sys_memfd_create, 2) + +#define __NR_syscall_count 340 /* * sysxtensa syscall handler From 61e47e9b53fcaf9fe4c3d80b4aa86c5d1e040fcb Mon Sep 17 00:00:00 2001 From: Max Filippov Date: Sat, 4 Oct 2014 04:44:04 +0400 Subject: [PATCH 005/371] xtensa: xtfpga: only select ethoc when ethernet is available Otherwise we get the following build warning: (XTENSA_PLATFORM_XTFPGA) selects ETHOC which has unmet direct dependencies (NETDEVICES && ETHERNET && HAS_IOMEM && HAS_DMA) Signed-off-by: Max Filippov --- arch/xtensa/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/xtensa/Kconfig b/arch/xtensa/Kconfig index 390bafed3f34..81f57e8c8f1b 100644 --- a/arch/xtensa/Kconfig +++ b/arch/xtensa/Kconfig @@ -319,8 +319,8 @@ config XTENSA_PLATFORM_S6105 config XTENSA_PLATFORM_XTFPGA bool "XTFPGA" + select ETHOC if ETHERNET select SERIAL_CONSOLE - select ETHOC select XTENSA_CALIBRATE_CCOUNT help XTFPGA is the name of Tensilica board family (LX60, LX110, LX200, ML605). From a3f2af2547884e02f7e43f995a6c442a4e54f1ea Mon Sep 17 00:00:00 2001 From: Pavitra Kumar Date: Fri, 10 Oct 2014 15:19:46 +0000 Subject: [PATCH 006/371] dm stripe: fix potential for leak in stripe_ctr error path Fix a potential struct stripe_c leak that would occur if the chunk_size exceeded the maximum allowed by dm_set_target_max_io_len (UINT_MAX). However, in practice there is no possibility of this occuring given that chunk_size is of type uint32_t. But it is good to fix this to future-proof in case dm_set_target_max_io_len's implementation were to change. Signed-off-by: Pavitra Kumar Signed-off-by: Mike Snitzer --- drivers/md/dm-stripe.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/md/dm-stripe.c b/drivers/md/dm-stripe.c index d1600d2aa2e2..f8b37d4c05d8 100644 --- a/drivers/md/dm-stripe.c +++ b/drivers/md/dm-stripe.c @@ -159,8 +159,10 @@ static int stripe_ctr(struct dm_target *ti, unsigned int argc, char **argv) sc->stripes_shift = __ffs(stripes); r = dm_set_target_max_io_len(ti, chunk_size); - if (r) + if (r) { + kfree(sc); return r; + } ti->num_flush_bios = stripes; ti->num_discard_bios = stripes; From 8000ebf76224a01adab9c1c16c341f54706292d5 Mon Sep 17 00:00:00 2001 From: Ebru Akagunduz Date: Wed, 8 Oct 2014 17:09:46 +0300 Subject: [PATCH 007/371] power: ab8500_fg.c: use 64-bit time types This patch changes 32-bit time types to 64-bit in drivers/power/ab8500_fg.c timespec and time_t can only represent signed 32-bit dates but the driver should represent dates that are after January 2038. So used time64.h header file and its proper types and functions. Use time64_t type instead of __kernel_time_t for time_stamps variable of ab8500_fg_avg_cap struct Signed-off-by: Ebru Akagunduz Acked-by: Arnd Bergmann Signed-off-by: Sebastian Reichel --- drivers/power/ab8500_fg.c | 17 +++++++++-------- 1 file changed, 9 insertions(+), 8 deletions(-) diff --git a/drivers/power/ab8500_fg.c b/drivers/power/ab8500_fg.c index 217da4b2ca86..99a78d365ceb 100644 --- a/drivers/power/ab8500_fg.c +++ b/drivers/power/ab8500_fg.c @@ -25,6 +25,7 @@ #include #include #include +#include #include #include #include @@ -108,7 +109,7 @@ enum ab8500_fg_calibration_state { struct ab8500_fg_avg_cap { int avg; int samples[NBR_AVG_SAMPLES]; - __kernel_time_t time_stamps[NBR_AVG_SAMPLES]; + time64_t time_stamps[NBR_AVG_SAMPLES]; int pos; int nbr_samples; int sum; @@ -386,15 +387,15 @@ static int ab8500_fg_is_low_curr(struct ab8500_fg *di, int curr) */ static int ab8500_fg_add_cap_sample(struct ab8500_fg *di, int sample) { - struct timespec ts; + struct timespec64 ts64; struct ab8500_fg_avg_cap *avg = &di->avg_cap; - getnstimeofday(&ts); + getnstimeofday64(&ts64); do { avg->sum += sample - avg->samples[avg->pos]; avg->samples[avg->pos] = sample; - avg->time_stamps[avg->pos] = ts.tv_sec; + avg->time_stamps[avg->pos] = ts64.tv_sec; avg->pos++; if (avg->pos == NBR_AVG_SAMPLES) @@ -407,7 +408,7 @@ static int ab8500_fg_add_cap_sample(struct ab8500_fg *di, int sample) * Check the time stamp for each sample. If too old, * replace with latest sample */ - } while (ts.tv_sec - VALID_CAPACITY_SEC > avg->time_stamps[avg->pos]); + } while (ts64.tv_sec - VALID_CAPACITY_SEC > avg->time_stamps[avg->pos]); avg->avg = avg->sum / avg->nbr_samples; @@ -446,14 +447,14 @@ static void ab8500_fg_clear_cap_samples(struct ab8500_fg *di) static void ab8500_fg_fill_cap_sample(struct ab8500_fg *di, int sample) { int i; - struct timespec ts; + struct timespec64 ts64; struct ab8500_fg_avg_cap *avg = &di->avg_cap; - getnstimeofday(&ts); + getnstimeofday64(&ts64); for (i = 0; i < NBR_AVG_SAMPLES; i++) { avg->samples[i] = sample; - avg->time_stamps[i] = ts.tv_sec; + avg->time_stamps[i] = ts64.tv_sec; } avg->pos = 0; From 9d28eb12447ee08bb5d1e8bb3195cf20e1ecd1c0 Mon Sep 17 00:00:00 2001 From: Mikulas Patocka Date: Thu, 16 Oct 2014 14:45:20 -0400 Subject: [PATCH 008/371] dm bufio: change __GFP_IO to __GFP_FS in shrinker callbacks The shrinker uses gfp flags to indicate what kind of operation can the driver wait for. If __GFP_IO flag is present, the driver can wait for block I/O operations, if __GFP_FS flag is present, the driver can wait on operations involving the filesystem. dm-bufio tested for __GFP_IO. However, dm-bufio can run on a loop block device that makes calls into the filesystem. If __GFP_IO is present and __GFP_FS isn't, dm-bufio could still block on filesystem operations if it runs on a loop block device. The change from __GFP_IO to __GFP_FS supposedly fixes one observed (though unreproducible) deadlock involving dm-bufio and loop device. Signed-off-by: Mikulas Patocka Signed-off-by: Mike Snitzer Cc: stable@vger.kernel.org --- drivers/md/dm-bufio.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) diff --git a/drivers/md/dm-bufio.c b/drivers/md/dm-bufio.c index 9ea5b6041eb2..0be200b6dbf2 100644 --- a/drivers/md/dm-bufio.c +++ b/drivers/md/dm-bufio.c @@ -1435,9 +1435,9 @@ static void drop_buffers(struct dm_bufio_client *c) /* * Test if the buffer is unused and too old, and commit it. - * At if noio is set, we must not do any I/O because we hold - * dm_bufio_clients_lock and we would risk deadlock if the I/O gets rerouted to - * different bufio client. + * And if GFP_NOFS is used, we must not do any I/O because we hold + * dm_bufio_clients_lock and we would risk deadlock if the I/O gets + * rerouted to different bufio client. */ static int __cleanup_old_buffer(struct dm_buffer *b, gfp_t gfp, unsigned long max_jiffies) @@ -1445,7 +1445,7 @@ static int __cleanup_old_buffer(struct dm_buffer *b, gfp_t gfp, if (jiffies - b->last_accessed < max_jiffies) return 0; - if (!(gfp & __GFP_IO)) { + if (!(gfp & __GFP_FS)) { if (test_bit(B_READING, &b->state) || test_bit(B_WRITING, &b->state) || test_bit(B_DIRTY, &b->state)) @@ -1487,7 +1487,7 @@ dm_bufio_shrink_scan(struct shrinker *shrink, struct shrink_control *sc) unsigned long freed; c = container_of(shrink, struct dm_bufio_client, shrinker); - if (sc->gfp_mask & __GFP_IO) + if (sc->gfp_mask & __GFP_FS) dm_bufio_lock(c); else if (!dm_bufio_trylock(c)) return SHRINK_STOP; @@ -1504,7 +1504,7 @@ dm_bufio_shrink_count(struct shrinker *shrink, struct shrink_control *sc) unsigned long count; c = container_of(shrink, struct dm_bufio_client, shrinker); - if (sc->gfp_mask & __GFP_IO) + if (sc->gfp_mask & __GFP_FS) dm_bufio_lock(c); else if (!dm_bufio_trylock(c)) return 0; From 2651cc6974d47fc43bef1cd8cd26966e4f5ba306 Mon Sep 17 00:00:00 2001 From: Max Filippov Date: Mon, 6 Oct 2014 21:01:17 +0400 Subject: [PATCH 009/371] xtensa: re-wire umount syscall to sys_oldumount Userspace actually passes single parameter (path name) to the umount syscall, so new umount just fails. Fix it by requesting old umount syscall implementation and re-wiring umount to it. Cc: stable@vger.kernel.org Signed-off-by: Max Filippov --- arch/xtensa/include/uapi/asm/unistd.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/arch/xtensa/include/uapi/asm/unistd.h b/arch/xtensa/include/uapi/asm/unistd.h index ee7b1527666b..db5bb72e2f4e 100644 --- a/arch/xtensa/include/uapi/asm/unistd.h +++ b/arch/xtensa/include/uapi/asm/unistd.h @@ -384,7 +384,8 @@ __SYSCALL(174, sys_chroot, 1) #define __NR_pivot_root 175 __SYSCALL(175, sys_pivot_root, 2) #define __NR_umount 176 -__SYSCALL(176, sys_umount, 2) +__SYSCALL(176, sys_oldumount, 1) +#define __ARCH_WANT_SYS_OLDUMOUNT #define __NR_swapoff 177 __SYSCALL(177, sys_swapoff, 1) #define __NR_sync 178 From 8c0b1ce28d680ea24fc3e4aaa49a0c0eef2d8909 Mon Sep 17 00:00:00 2001 From: Max Filippov Date: Mon, 6 Oct 2014 19:34:29 +0400 Subject: [PATCH 010/371] xtensa: xtfpga: add generic KC705 board config This config enables most important features, NFS or FLASH rootfs and minimal debug. Signed-off-by: Max Filippov --- arch/xtensa/configs/generic_kc705_defconfig | 131 ++++++++++++++++++++ 1 file changed, 131 insertions(+) create mode 100644 arch/xtensa/configs/generic_kc705_defconfig diff --git a/arch/xtensa/configs/generic_kc705_defconfig b/arch/xtensa/configs/generic_kc705_defconfig new file mode 100644 index 000000000000..f4b7b3888da8 --- /dev/null +++ b/arch/xtensa/configs/generic_kc705_defconfig @@ -0,0 +1,131 @@ +CONFIG_SYSVIPC=y +CONFIG_POSIX_MQUEUE=y +CONFIG_FHANDLE=y +CONFIG_IRQ_DOMAIN_DEBUG=y +CONFIG_NO_HZ_IDLE=y +CONFIG_HIGH_RES_TIMERS=y +CONFIG_IRQ_TIME_ACCOUNTING=y +CONFIG_BSD_PROCESS_ACCT=y +CONFIG_CGROUP_DEBUG=y +CONFIG_CGROUP_FREEZER=y +CONFIG_CGROUP_DEVICE=y +CONFIG_CPUSETS=y +CONFIG_CGROUP_CPUACCT=y +CONFIG_RESOURCE_COUNTERS=y +CONFIG_MEMCG=y +CONFIG_NAMESPACES=y +CONFIG_SCHED_AUTOGROUP=y +CONFIG_RELAY=y +CONFIG_BLK_DEV_INITRD=y +CONFIG_EXPERT=y +CONFIG_SYSCTL_SYSCALL=y +CONFIG_KALLSYMS_ALL=y +CONFIG_PROFILING=y +CONFIG_OPROFILE=y +CONFIG_MODULES=y +CONFIG_MODULE_UNLOAD=y +# CONFIG_IOSCHED_DEADLINE is not set +# CONFIG_IOSCHED_CFQ is not set +CONFIG_XTENSA_VARIANT_DC233C=y +CONFIG_XTENSA_UNALIGNED_USER=y +CONFIG_PREEMPT=y +CONFIG_HIGHMEM=y +# CONFIG_PCI is not set +CONFIG_XTENSA_PLATFORM_XTFPGA=y +CONFIG_CMDLINE_BOOL=y +CONFIG_CMDLINE="earlycon=uart8250,mmio32,0xfd050020,115200n8 console=ttyS0,115200n8 ip=dhcp root=/dev/nfs rw debug" +CONFIG_USE_OF=y +CONFIG_BUILTIN_DTB="kc705" +# CONFIG_COMPACTION is not set +# CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS is not set +CONFIG_NET=y +CONFIG_PACKET=y +CONFIG_UNIX=y +CONFIG_INET=y +CONFIG_IP_MULTICAST=y +CONFIG_IP_PNP=y +CONFIG_IP_PNP_DHCP=y +CONFIG_IP_PNP_BOOTP=y +CONFIG_IP_PNP_RARP=y +# CONFIG_IPV6 is not set +CONFIG_NETFILTER=y +# CONFIG_WIRELESS is not set +CONFIG_DEVTMPFS=y +CONFIG_DEVTMPFS_MOUNT=y +# CONFIG_STANDALONE is not set +CONFIG_MTD=y +CONFIG_MTD_CFI=y +CONFIG_MTD_JEDECPROBE=y +CONFIG_MTD_CFI_INTELEXT=y +CONFIG_MTD_CFI_AMDSTD=y +CONFIG_MTD_CFI_STAA=y +CONFIG_MTD_PHYSMAP_OF=y +CONFIG_MTD_UBI=y +CONFIG_BLK_DEV_LOOP=y +CONFIG_BLK_DEV_RAM=y +CONFIG_SCSI=y +CONFIG_BLK_DEV_SD=y +CONFIG_NETDEVICES=y +# CONFIG_NET_VENDOR_ARC is not set +# CONFIG_NET_VENDOR_BROADCOM is not set +# CONFIG_NET_VENDOR_INTEL is not set +# CONFIG_NET_VENDOR_MARVELL is not set +# CONFIG_NET_VENDOR_MICREL is not set +# CONFIG_NET_VENDOR_NATSEMI is not set +# CONFIG_NET_VENDOR_SAMSUNG is not set +# CONFIG_NET_VENDOR_SEEQ is not set +# CONFIG_NET_VENDOR_SMSC is not set +# CONFIG_NET_VENDOR_STMICRO is not set +# CONFIG_NET_VENDOR_VIA is not set +# CONFIG_NET_VENDOR_WIZNET is not set +CONFIG_MARVELL_PHY=y +# CONFIG_WLAN is not set +# CONFIG_INPUT_MOUSEDEV is not set +# CONFIG_INPUT_KEYBOARD is not set +# CONFIG_INPUT_MOUSE is not set +# CONFIG_SERIO is not set +CONFIG_SERIAL_8250=y +# CONFIG_SERIAL_8250_DEPRECATED_OPTIONS is not set +CONFIG_SERIAL_8250_CONSOLE=y +CONFIG_SERIAL_OF_PLATFORM=y +CONFIG_HW_RANDOM=y +# CONFIG_HWMON is not set +CONFIG_WATCHDOG=y +CONFIG_WATCHDOG_NOWAYOUT=y +CONFIG_SOFT_WATCHDOG=y +# CONFIG_VGA_CONSOLE is not set +# CONFIG_USB_SUPPORT is not set +# CONFIG_IOMMU_SUPPORT is not set +CONFIG_EXT3_FS=y +CONFIG_EXT4_FS=y +CONFIG_FANOTIFY=y +CONFIG_VFAT_FS=y +CONFIG_PROC_KCORE=y +CONFIG_TMPFS=y +CONFIG_TMPFS_POSIX_ACL=y +CONFIG_UBIFS_FS=y +CONFIG_NFS_FS=y +CONFIG_NFS_V4=y +CONFIG_NFS_SWAP=y +CONFIG_ROOT_NFS=y +CONFIG_SUNRPC_DEBUG=y +CONFIG_NLS_CODEPAGE_437=y +CONFIG_NLS_ISO8859_1=y +CONFIG_PRINTK_TIME=y +CONFIG_DYNAMIC_DEBUG=y +CONFIG_DEBUG_INFO=y +CONFIG_MAGIC_SYSRQ=y +CONFIG_LOCKUP_DETECTOR=y +# CONFIG_SCHED_DEBUG is not set +CONFIG_SCHEDSTATS=y +CONFIG_TIMER_STATS=y +CONFIG_DEBUG_RT_MUTEXES=y +CONFIG_DEBUG_SPINLOCK=y +CONFIG_DEBUG_MUTEXES=y +CONFIG_DEBUG_ATOMIC_SLEEP=y +CONFIG_STACKTRACE=y +CONFIG_RCU_TRACE=y +# CONFIG_FTRACE is not set +CONFIG_LD_NO_RELAX=y +# CONFIG_S32C1I_SELFTEST is not set +CONFIG_CRYPTO_ANSI_CPRNG=y From 3ce2ce1c0d79477c8e093e675f38451105798def Mon Sep 17 00:00:00 2001 From: Max Filippov Date: Mon, 6 Oct 2014 22:36:48 +0400 Subject: [PATCH 011/371] xtensa: xtfpga: add lx200 SMP DTS and defconfig This config allows running SMP-enabled bitstream on LX200 board. NFS or FLASH rootfs, minimal debug, up to 4 cores. Signed-off-by: Max Filippov --- arch/xtensa/boot/dts/lx200mx.dts | 16 +++ arch/xtensa/configs/smp_lx200_defconfig | 135 ++++++++++++++++++++++++ 2 files changed, 151 insertions(+) create mode 100644 arch/xtensa/boot/dts/lx200mx.dts create mode 100644 arch/xtensa/configs/smp_lx200_defconfig diff --git a/arch/xtensa/boot/dts/lx200mx.dts b/arch/xtensa/boot/dts/lx200mx.dts new file mode 100644 index 000000000000..249822b99bd6 --- /dev/null +++ b/arch/xtensa/boot/dts/lx200mx.dts @@ -0,0 +1,16 @@ +/dts-v1/; +/include/ "xtfpga.dtsi" +/include/ "xtfpga-flash-16m.dtsi" + +/ { + compatible = "cdns,xtensa-lx200"; + memory@0 { + device_type = "memory"; + reg = <0x00000000 0x06000000>; + }; + pic: pic { + compatible = "cdns,xtensa-mx"; + #interrupt-cells = <2>; + interrupt-controller; + }; +}; diff --git a/arch/xtensa/configs/smp_lx200_defconfig b/arch/xtensa/configs/smp_lx200_defconfig new file mode 100644 index 000000000000..22eeacba37cc --- /dev/null +++ b/arch/xtensa/configs/smp_lx200_defconfig @@ -0,0 +1,135 @@ +CONFIG_SYSVIPC=y +CONFIG_POSIX_MQUEUE=y +CONFIG_FHANDLE=y +CONFIG_IRQ_DOMAIN_DEBUG=y +CONFIG_NO_HZ_IDLE=y +CONFIG_HIGH_RES_TIMERS=y +CONFIG_IRQ_TIME_ACCOUNTING=y +CONFIG_BSD_PROCESS_ACCT=y +CONFIG_CGROUP_DEBUG=y +CONFIG_CGROUP_FREEZER=y +CONFIG_CGROUP_DEVICE=y +CONFIG_CPUSETS=y +CONFIG_CGROUP_CPUACCT=y +CONFIG_RESOURCE_COUNTERS=y +CONFIG_MEMCG=y +CONFIG_NAMESPACES=y +CONFIG_SCHED_AUTOGROUP=y +CONFIG_RELAY=y +CONFIG_BLK_DEV_INITRD=y +CONFIG_EXPERT=y +CONFIG_SYSCTL_SYSCALL=y +CONFIG_KALLSYMS_ALL=y +CONFIG_PROFILING=y +CONFIG_OPROFILE=y +CONFIG_MODULES=y +CONFIG_MODULE_UNLOAD=y +# CONFIG_IOSCHED_DEADLINE is not set +# CONFIG_IOSCHED_CFQ is not set +CONFIG_XTENSA_VARIANT_CUSTOM=y +CONFIG_XTENSA_VARIANT_CUSTOM_NAME="test_mmuhifi_c3" +CONFIG_XTENSA_UNALIGNED_USER=y +CONFIG_PREEMPT=y +CONFIG_HAVE_SMP=y +CONFIG_SMP=y +CONFIG_HOTPLUG_CPU=y +# CONFIG_INITIALIZE_XTENSA_MMU_INSIDE_VMLINUX is not set +# CONFIG_PCI is not set +CONFIG_XTENSA_PLATFORM_XTFPGA=y +CONFIG_CMDLINE_BOOL=y +CONFIG_CMDLINE="earlycon=uart8250,mmio32,0xfd050020,115200n8 console=ttyS0,115200n8 ip=dhcp root=/dev/nfs rw debug" +CONFIG_USE_OF=y +CONFIG_BUILTIN_DTB="lx200mx" +# CONFIG_COMPACTION is not set +# CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS is not set +CONFIG_NET=y +CONFIG_PACKET=y +CONFIG_UNIX=y +CONFIG_INET=y +CONFIG_IP_MULTICAST=y +CONFIG_IP_PNP=y +CONFIG_IP_PNP_DHCP=y +CONFIG_IP_PNP_BOOTP=y +CONFIG_IP_PNP_RARP=y +# CONFIG_IPV6 is not set +CONFIG_NETFILTER=y +# CONFIG_WIRELESS is not set +CONFIG_DEVTMPFS=y +CONFIG_DEVTMPFS_MOUNT=y +# CONFIG_STANDALONE is not set +CONFIG_MTD=y +CONFIG_MTD_CFI=y +CONFIG_MTD_JEDECPROBE=y +CONFIG_MTD_CFI_INTELEXT=y +CONFIG_MTD_CFI_AMDSTD=y +CONFIG_MTD_CFI_STAA=y +CONFIG_MTD_PHYSMAP_OF=y +CONFIG_MTD_UBI=y +CONFIG_BLK_DEV_LOOP=y +CONFIG_BLK_DEV_RAM=y +CONFIG_SCSI=y +CONFIG_BLK_DEV_SD=y +CONFIG_NETDEVICES=y +# CONFIG_NET_VENDOR_ARC is not set +# CONFIG_NET_VENDOR_BROADCOM is not set +# CONFIG_NET_VENDOR_INTEL is not set +# CONFIG_NET_VENDOR_MARVELL is not set +# CONFIG_NET_VENDOR_MICREL is not set +# CONFIG_NET_VENDOR_NATSEMI is not set +# CONFIG_NET_VENDOR_SAMSUNG is not set +# CONFIG_NET_VENDOR_SEEQ is not set +# CONFIG_NET_VENDOR_SMSC is not set +# CONFIG_NET_VENDOR_STMICRO is not set +# CONFIG_NET_VENDOR_VIA is not set +# CONFIG_NET_VENDOR_WIZNET is not set +CONFIG_MARVELL_PHY=y +# CONFIG_WLAN is not set +# CONFIG_INPUT_MOUSEDEV is not set +# CONFIG_INPUT_KEYBOARD is not set +# CONFIG_INPUT_MOUSE is not set +# CONFIG_SERIO is not set +CONFIG_SERIAL_8250=y +# CONFIG_SERIAL_8250_DEPRECATED_OPTIONS is not set +CONFIG_SERIAL_8250_CONSOLE=y +CONFIG_SERIAL_OF_PLATFORM=y +CONFIG_HW_RANDOM=y +# CONFIG_HWMON is not set +CONFIG_WATCHDOG=y +CONFIG_WATCHDOG_NOWAYOUT=y +CONFIG_SOFT_WATCHDOG=y +# CONFIG_VGA_CONSOLE is not set +# CONFIG_USB_SUPPORT is not set +# CONFIG_IOMMU_SUPPORT is not set +CONFIG_EXT3_FS=y +CONFIG_EXT4_FS=y +CONFIG_FANOTIFY=y +CONFIG_VFAT_FS=y +CONFIG_PROC_KCORE=y +CONFIG_TMPFS=y +CONFIG_TMPFS_POSIX_ACL=y +CONFIG_UBIFS_FS=y +CONFIG_NFS_FS=y +CONFIG_NFS_V4=y +CONFIG_NFS_SWAP=y +CONFIG_ROOT_NFS=y +CONFIG_SUNRPC_DEBUG=y +CONFIG_NLS_CODEPAGE_437=y +CONFIG_NLS_ISO8859_1=y +CONFIG_PRINTK_TIME=y +CONFIG_DYNAMIC_DEBUG=y +CONFIG_DEBUG_INFO=y +CONFIG_MAGIC_SYSRQ=y +CONFIG_DEBUG_VM=y +CONFIG_LOCKUP_DETECTOR=y +CONFIG_SCHEDSTATS=y +CONFIG_TIMER_STATS=y +CONFIG_DEBUG_RT_MUTEXES=y +CONFIG_DEBUG_SPINLOCK=y +CONFIG_DEBUG_MUTEXES=y +CONFIG_DEBUG_ATOMIC_SLEEP=y +CONFIG_STACKTRACE=y +CONFIG_RCU_TRACE=y +# CONFIG_FTRACE is not set +CONFIG_LD_NO_RELAX=y +# CONFIG_S32C1I_SELFTEST is not set +CONFIG_CRYPTO_ANSI_CPRNG=y From 40d43c4b4cac4c2647bf07110d7b07d35f399a84 Mon Sep 17 00:00:00 2001 From: Heinz Mauelshagen Date: Fri, 17 Oct 2014 13:38:50 +0200 Subject: [PATCH 012/371] dm raid: ensure superblock's size matches device's logical block size The dm-raid superblock (struct dm_raid_superblock) is padded to 512 bytes and that size is being used to read it in from the metadata device into one preallocated page. Reading or writing this on a 512-byte sector device works fine but on a 4096-byte sector device this fails. Set the dm-raid superblock's size to the logical block size of the metadata device, because IO at that size is guaranteed too work. Also add a size check to avoid silent partial metadata loss in case the superblock should ever grow past the logical block size or PAGE_SIZE. [includes pointer math fix from Dan Carpenter] Reported-by: "Liuhua Wang" Signed-off-by: Heinz Mauelshagen Signed-off-by: Dan Carpenter Signed-off-by: Mike Snitzer Cc: stable@vger.kernel.org --- drivers/md/dm-raid.c | 11 +++++++---- 1 file changed, 7 insertions(+), 4 deletions(-) diff --git a/drivers/md/dm-raid.c b/drivers/md/dm-raid.c index 4857fa4a5484..a7cb9dd5f135 100644 --- a/drivers/md/dm-raid.c +++ b/drivers/md/dm-raid.c @@ -789,8 +789,7 @@ struct dm_raid_superblock { __le32 layout; __le32 stripe_sectors; - __u8 pad[452]; /* Round struct to 512 bytes. */ - /* Always set to 0 when writing. */ + /* Remainder of a logical block is zero-filled when writing (see super_sync()). */ } __packed; static int read_disk_sb(struct md_rdev *rdev, int size) @@ -827,7 +826,7 @@ static void super_sync(struct mddev *mddev, struct md_rdev *rdev) test_bit(Faulty, &(rs->dev[i].rdev.flags))) failed_devices |= (1ULL << i); - memset(sb, 0, sizeof(*sb)); + memset(sb + 1, 0, rdev->sb_size - sizeof(*sb)); sb->magic = cpu_to_le32(DM_RAID_MAGIC); sb->features = cpu_to_le32(0); /* No features yet */ @@ -862,7 +861,11 @@ static int super_load(struct md_rdev *rdev, struct md_rdev *refdev) uint64_t events_sb, events_refsb; rdev->sb_start = 0; - rdev->sb_size = sizeof(*sb); + rdev->sb_size = bdev_logical_block_size(rdev->meta_bdev); + if (rdev->sb_size < sizeof(*sb) || rdev->sb_size > PAGE_SIZE) { + DMERR("superblock size of a logical block is no longer valid"); + return -EINVAL; + } ret = read_disk_sb(rdev, rdev->sb_size); if (ret) From 923a6e5e5f171317ac8bb462ac4b814fa7880d3c Mon Sep 17 00:00:00 2001 From: Tadeusz Struk Date: Mon, 13 Oct 2014 18:24:26 -0700 Subject: [PATCH 013/371] crypto: qat - Prevent dma mapping zero length assoc data Do not attempt to dma map associated data if it is zero length. Cc: stable@vger.kernel.org Signed-off-by: Tadeusz Struk Tested-by: Nikolay Aleksandrov Reviewed-by: Prarit Bhargava Signed-off-by: Herbert Xu --- drivers/crypto/qat/qat_common/qat_algs.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/crypto/qat/qat_common/qat_algs.c b/drivers/crypto/qat/qat_common/qat_algs.c index f2e2f158cfbe..699ccf44e9bb 100644 --- a/drivers/crypto/qat/qat_common/qat_algs.c +++ b/drivers/crypto/qat/qat_common/qat_algs.c @@ -605,6 +605,8 @@ static int qat_alg_sgl_to_bufl(struct qat_crypto_instance *inst, goto err; for_each_sg(assoc, sg, assoc_n, i) { + if (!sg->length) + continue; bufl->bufers[bufs].addr = dma_map_single(dev, sg_virt(sg), sg->length, From 09adc8789c4e895d7548fa9eb5d24ad9a5d91c5d Mon Sep 17 00:00:00 2001 From: Tadeusz Struk Date: Mon, 13 Oct 2014 18:24:32 -0700 Subject: [PATCH 014/371] crypto: qat - Enforce valid numa configuration In a system with NUMA configuration we want to enforce that the accelerator is connected to a node with memory to avoid cross QPI memory transaction. Otherwise there is no point in using the accelerator as the encryption in software will be faster. Cc: stable@vger.kernel.org Signed-off-by: Tadeusz Struk Tested-by: Nikolay Aleksandrov Reviewed-by: Prarit Bhargava Signed-off-by: Herbert Xu --- .../crypto/qat/qat_common/adf_accel_devices.h | 3 +- drivers/crypto/qat/qat_common/adf_transport.c | 12 ++++--- drivers/crypto/qat/qat_common/qat_algs.c | 5 +-- drivers/crypto/qat/qat_common/qat_crypto.c | 8 +++-- drivers/crypto/qat/qat_dh895xcc/adf_admin.c | 2 +- drivers/crypto/qat/qat_dh895xcc/adf_drv.c | 32 +++++++------------ drivers/crypto/qat/qat_dh895xcc/adf_isr.c | 2 +- 7 files changed, 30 insertions(+), 34 deletions(-) diff --git a/drivers/crypto/qat/qat_common/adf_accel_devices.h b/drivers/crypto/qat/qat_common/adf_accel_devices.h index 9282381b03ce..fe7b3f06f6e6 100644 --- a/drivers/crypto/qat/qat_common/adf_accel_devices.h +++ b/drivers/crypto/qat/qat_common/adf_accel_devices.h @@ -198,8 +198,7 @@ struct adf_accel_dev { struct dentry *debugfs_dir; struct list_head list; struct module *owner; - uint8_t accel_id; - uint8_t numa_node; struct adf_accel_pci accel_pci_dev; + uint8_t accel_id; } __packed; #endif diff --git a/drivers/crypto/qat/qat_common/adf_transport.c b/drivers/crypto/qat/qat_common/adf_transport.c index 5f3fa45348b4..9dd2cb72a4e8 100644 --- a/drivers/crypto/qat/qat_common/adf_transport.c +++ b/drivers/crypto/qat/qat_common/adf_transport.c @@ -419,9 +419,10 @@ static int adf_init_bank(struct adf_accel_dev *accel_dev, WRITE_CSR_RING_BASE(csr_addr, bank_num, i, 0); ring = &bank->rings[i]; if (hw_data->tx_rings_mask & (1 << i)) { - ring->inflights = kzalloc_node(sizeof(atomic_t), - GFP_KERNEL, - accel_dev->numa_node); + ring->inflights = + kzalloc_node(sizeof(atomic_t), + GFP_KERNEL, + dev_to_node(&GET_DEV(accel_dev))); if (!ring->inflights) goto err; } else { @@ -469,13 +470,14 @@ int adf_init_etr_data(struct adf_accel_dev *accel_dev) int i, ret; etr_data = kzalloc_node(sizeof(*etr_data), GFP_KERNEL, - accel_dev->numa_node); + dev_to_node(&GET_DEV(accel_dev))); if (!etr_data) return -ENOMEM; num_banks = GET_MAX_BANKS(accel_dev); size = num_banks * sizeof(struct adf_etr_bank_data); - etr_data->banks = kzalloc_node(size, GFP_KERNEL, accel_dev->numa_node); + etr_data->banks = kzalloc_node(size, GFP_KERNEL, + dev_to_node(&GET_DEV(accel_dev))); if (!etr_data->banks) { ret = -ENOMEM; goto err_bank; diff --git a/drivers/crypto/qat/qat_common/qat_algs.c b/drivers/crypto/qat/qat_common/qat_algs.c index 699ccf44e9bb..9e9619cd4a79 100644 --- a/drivers/crypto/qat/qat_common/qat_algs.c +++ b/drivers/crypto/qat/qat_common/qat_algs.c @@ -596,7 +596,8 @@ static int qat_alg_sgl_to_bufl(struct qat_crypto_instance *inst, if (unlikely(!n)) return -EINVAL; - bufl = kmalloc_node(sz, GFP_ATOMIC, inst->accel_dev->numa_node); + bufl = kmalloc_node(sz, GFP_ATOMIC, + dev_to_node(&GET_DEV(inst->accel_dev))); if (unlikely(!bufl)) return -ENOMEM; @@ -642,7 +643,7 @@ static int qat_alg_sgl_to_bufl(struct qat_crypto_instance *inst, struct qat_alg_buf *bufers; buflout = kmalloc_node(sz, GFP_ATOMIC, - inst->accel_dev->numa_node); + dev_to_node(&GET_DEV(inst->accel_dev))); if (unlikely(!buflout)) goto err; bloutp = dma_map_single(dev, buflout, sz, DMA_TO_DEVICE); diff --git a/drivers/crypto/qat/qat_common/qat_crypto.c b/drivers/crypto/qat/qat_common/qat_crypto.c index 0d59bcb50de1..828f2a686aab 100644 --- a/drivers/crypto/qat/qat_common/qat_crypto.c +++ b/drivers/crypto/qat/qat_common/qat_crypto.c @@ -109,12 +109,14 @@ struct qat_crypto_instance *qat_crypto_get_instance_node(int node) list_for_each(itr, adf_devmgr_get_head()) { accel_dev = list_entry(itr, struct adf_accel_dev, list); - if (accel_dev->numa_node == node && adf_dev_started(accel_dev)) + if ((node == dev_to_node(&GET_DEV(accel_dev)) || + dev_to_node(&GET_DEV(accel_dev)) < 0) + && adf_dev_started(accel_dev)) break; accel_dev = NULL; } if (!accel_dev) { - pr_err("QAT: Could not find device on give node\n"); + pr_err("QAT: Could not find device on node %d\n", node); accel_dev = adf_devmgr_get_first(); } if (!accel_dev || !adf_dev_started(accel_dev)) @@ -164,7 +166,7 @@ static int qat_crypto_create_instances(struct adf_accel_dev *accel_dev) for (i = 0; i < num_inst; i++) { inst = kzalloc_node(sizeof(*inst), GFP_KERNEL, - accel_dev->numa_node); + dev_to_node(&GET_DEV(accel_dev))); if (!inst) goto err; diff --git a/drivers/crypto/qat/qat_dh895xcc/adf_admin.c b/drivers/crypto/qat/qat_dh895xcc/adf_admin.c index 978d6c56639d..53c491b59f07 100644 --- a/drivers/crypto/qat/qat_dh895xcc/adf_admin.c +++ b/drivers/crypto/qat/qat_dh895xcc/adf_admin.c @@ -108,7 +108,7 @@ int adf_init_admin_comms(struct adf_accel_dev *accel_dev) uint64_t reg_val; admin = kzalloc_node(sizeof(*accel_dev->admin), GFP_KERNEL, - accel_dev->numa_node); + dev_to_node(&GET_DEV(accel_dev))); if (!admin) return -ENOMEM; admin->virt_addr = dma_zalloc_coherent(&GET_DEV(accel_dev), PAGE_SIZE, diff --git a/drivers/crypto/qat/qat_dh895xcc/adf_drv.c b/drivers/crypto/qat/qat_dh895xcc/adf_drv.c index 0d0435a41be9..948f66be262b 100644 --- a/drivers/crypto/qat/qat_dh895xcc/adf_drv.c +++ b/drivers/crypto/qat/qat_dh895xcc/adf_drv.c @@ -119,21 +119,6 @@ static void adf_cleanup_accel(struct adf_accel_dev *accel_dev) kfree(accel_dev); } -static uint8_t adf_get_dev_node_id(struct pci_dev *pdev) -{ - unsigned int bus_per_cpu = 0; - struct cpuinfo_x86 *c = &cpu_data(num_online_cpus() - 1); - - if (!c->phys_proc_id) - return 0; - - bus_per_cpu = 256 / (c->phys_proc_id + 1); - - if (bus_per_cpu != 0) - return pdev->bus->number / bus_per_cpu; - return 0; -} - static int qat_dev_start(struct adf_accel_dev *accel_dev) { int cpus = num_online_cpus(); @@ -235,7 +220,6 @@ static int adf_probe(struct pci_dev *pdev, const struct pci_device_id *ent) void __iomem *pmisc_bar_addr = NULL; char name[ADF_DEVICE_NAME_LENGTH]; unsigned int i, bar_nr; - uint8_t node; int ret; switch (ent->device) { @@ -246,12 +230,19 @@ static int adf_probe(struct pci_dev *pdev, const struct pci_device_id *ent) return -ENODEV; } - node = adf_get_dev_node_id(pdev); - accel_dev = kzalloc_node(sizeof(*accel_dev), GFP_KERNEL, node); + if (num_possible_nodes() > 1 && dev_to_node(&pdev->dev) < 0) { + /* If the accelerator is connected to a node with no memory + * there is no point in using the accelerator since the remote + * memory transaction will be very slow. */ + dev_err(&pdev->dev, "Invalid NUMA configuration.\n"); + return -EINVAL; + } + + accel_dev = kzalloc_node(sizeof(*accel_dev), GFP_KERNEL, + dev_to_node(&pdev->dev)); if (!accel_dev) return -ENOMEM; - accel_dev->numa_node = node; INIT_LIST_HEAD(&accel_dev->crypto_list); /* Add accel device to accel table. @@ -264,7 +255,8 @@ static int adf_probe(struct pci_dev *pdev, const struct pci_device_id *ent) accel_dev->owner = THIS_MODULE; /* Allocate and configure device configuration structure */ - hw_data = kzalloc_node(sizeof(*hw_data), GFP_KERNEL, node); + hw_data = kzalloc_node(sizeof(*hw_data), GFP_KERNEL, + dev_to_node(&pdev->dev)); if (!hw_data) { ret = -ENOMEM; goto out_err; diff --git a/drivers/crypto/qat/qat_dh895xcc/adf_isr.c b/drivers/crypto/qat/qat_dh895xcc/adf_isr.c index 67ec61e51185..d96ee21b9b77 100644 --- a/drivers/crypto/qat/qat_dh895xcc/adf_isr.c +++ b/drivers/crypto/qat/qat_dh895xcc/adf_isr.c @@ -168,7 +168,7 @@ static int adf_isr_alloc_msix_entry_table(struct adf_accel_dev *accel_dev) uint32_t msix_num_entries = hw_data->num_banks + 1; entries = kzalloc_node(msix_num_entries * sizeof(*entries), - GFP_KERNEL, accel_dev->numa_node); + GFP_KERNEL, dev_to_node(&GET_DEV(accel_dev))); if (!entries) return -ENOMEM; From cf355704d681ce7043c732e732b0a23c27d158a8 Mon Sep 17 00:00:00 2001 From: Alexander Sverdlin Date: Thu, 23 Oct 2014 15:55:04 +0200 Subject: [PATCH 015/371] MIPS: Octeon: Make Octeon GPIO IRQ chip CPU hotplug-aware Make Octeon GPIO IRQ chip CPU hotplug-aware Seems that irq_cpu_offline callbacks were forgotten in v1 and v2 CIU GPIO chips. There is such a callback for octeon_irq_chip_ciu2_gpio, covering CIU2 chips. Without this callback GPIO IRQs are not being migrated during core offlining. Patch is tested on Octeon II. Signed-off-by: Alexander Sverdlin Cc: David Daney Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/8201/ Signed-off-by: Ralf Baechle --- arch/mips/cavium-octeon/octeon-irq.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/mips/cavium-octeon/octeon-irq.c b/arch/mips/cavium-octeon/octeon-irq.c index 741734049675..2bc4aa95944e 100644 --- a/arch/mips/cavium-octeon/octeon-irq.c +++ b/arch/mips/cavium-octeon/octeon-irq.c @@ -809,6 +809,7 @@ static struct irq_chip octeon_irq_chip_ciu_gpio_v2 = { .irq_set_type = octeon_irq_ciu_gpio_set_type, #ifdef CONFIG_SMP .irq_set_affinity = octeon_irq_ciu_set_affinity_v2, + .irq_cpu_offline = octeon_irq_cpu_offline_ciu, #endif .flags = IRQCHIP_SET_TYPE_MASKED, }; @@ -823,6 +824,7 @@ static struct irq_chip octeon_irq_chip_ciu_gpio = { .irq_set_type = octeon_irq_ciu_gpio_set_type, #ifdef CONFIG_SMP .irq_set_affinity = octeon_irq_ciu_set_affinity, + .irq_cpu_offline = octeon_irq_cpu_offline_ciu, #endif .flags = IRQCHIP_SET_TYPE_MASKED, }; From d5a238df0a29f271069a1d3bb2c58ddec3cb4669 Mon Sep 17 00:00:00 2001 From: Yijing Wang Date: Wed, 15 Oct 2014 11:07:06 +0800 Subject: [PATCH 016/371] MIPS/Xlp: Remove the dead function destroy_irq() to fix build error Commit 465665f78a7 ("mips: Kill pointless destroy_irq()") removed the destroy_irq(). So remove the leftover one in xlp_setup_msix() to fix build error. arch/mips/pci/msi-xlp.c: In function 'xlp_setup_msix': arch/mips/pci/msi-xlp.c:447:3: error: implicit declaration of function 'destroy_irq'.. cc1: some warnings being treated as errors make[1]: *** [arch/mips/pci/msi-xlp.o] Error 1 make: *** [arch/mips/pci/] Error 2 Signed-off-by: Yijing Wang Cc: Thomas Gleixner Cc: Bjorn Helgaas Cc: linux-pci@vger.kernel.org Cc: linux-kernel@vger.kernel.org Cc: Xinwei Hu Cc: Wuyun Cc: linux-arm-kernel@lists.infradead.org Cc: Russell King Cc: linux-arch@vger.kernel.org Cc: arnab.basu@freescale.com Cc: Bharat.Bhushan@freescale.com Cc: x86@kernel.org Cc: Arnd Bergmann Cc: Konrad Rzeszutek Wilk Cc: xen-devel@lists.xenproject.org Cc: Joerg Roedel Cc: iommu@lists.linux-foundation.org Cc: linux-mips@linux-mips.org Cc: Benjamin Herrenschmidt Cc: linuxppc-dev@lists.ozlabs.org Cc: linux-s390@vger.kernel.org Cc: Sebastian Ott Cc: Tony Luck Cc: linux-ia64@vger.kernel.org Cc: David S. Miller Cc: sparclinux@vger.kernel.org Cc: Chris Metcalf Cc: Lucas Stach Cc: David Vrabel Cc: Sergei Shtylyov Cc: Michael Ellerman Cc: Thierry Reding Cc: Thomas Petazzoni Cc: Liviu Dudau Patchwork: https://patchwork.linux-mips.org/patch/8087/ Signed-off-by: Ralf Baechle --- arch/mips/pci/msi-xlp.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/arch/mips/pci/msi-xlp.c b/arch/mips/pci/msi-xlp.c index fa374fe3746b..f7ac3edda1b2 100644 --- a/arch/mips/pci/msi-xlp.c +++ b/arch/mips/pci/msi-xlp.c @@ -443,10 +443,8 @@ static int xlp_setup_msix(uint64_t lnkbase, int node, int link, msg.data = 0xc00 | msixvec; ret = irq_set_msi_desc(xirq, desc); - if (ret < 0) { - destroy_irq(xirq); + if (ret < 0) return ret; - } write_msi_msg(xirq, &msg); return 0; From 5df4c8dbbc03f4d7e6b6620dcc6869fa989406ee Mon Sep 17 00:00:00 2001 From: Ralf Baechle Date: Mon, 27 Oct 2014 03:35:53 +0100 Subject: [PATCH 017/371] MIPS: Wire up bpf syscall. Signed-off-by: Ralf Baechle --- arch/mips/include/uapi/asm/unistd.h | 15 +++++++++------ arch/mips/kernel/scall32-o32.S | 1 + arch/mips/kernel/scall64-64.S | 1 + arch/mips/kernel/scall64-n32.S | 1 + arch/mips/kernel/scall64-o32.S | 1 + 5 files changed, 13 insertions(+), 6 deletions(-) diff --git a/arch/mips/include/uapi/asm/unistd.h b/arch/mips/include/uapi/asm/unistd.h index fdb4923777d1..9dc58568f230 100644 --- a/arch/mips/include/uapi/asm/unistd.h +++ b/arch/mips/include/uapi/asm/unistd.h @@ -375,16 +375,17 @@ #define __NR_seccomp (__NR_Linux + 352) #define __NR_getrandom (__NR_Linux + 353) #define __NR_memfd_create (__NR_Linux + 354) +#define __NR_bpf (__NR_Linux + 355) /* * Offset of the last Linux o32 flavoured syscall */ -#define __NR_Linux_syscalls 354 +#define __NR_Linux_syscalls 355 #endif /* _MIPS_SIM == _MIPS_SIM_ABI32 */ #define __NR_O32_Linux 4000 -#define __NR_O32_Linux_syscalls 354 +#define __NR_O32_Linux_syscalls 355 #if _MIPS_SIM == _MIPS_SIM_ABI64 @@ -707,16 +708,17 @@ #define __NR_seccomp (__NR_Linux + 312) #define __NR_getrandom (__NR_Linux + 313) #define __NR_memfd_create (__NR_Linux + 314) +#define __NR_bpf (__NR_Linux + 315) /* * Offset of the last Linux 64-bit flavoured syscall */ -#define __NR_Linux_syscalls 314 +#define __NR_Linux_syscalls 315 #endif /* _MIPS_SIM == _MIPS_SIM_ABI64 */ #define __NR_64_Linux 5000 -#define __NR_64_Linux_syscalls 314 +#define __NR_64_Linux_syscalls 315 #if _MIPS_SIM == _MIPS_SIM_NABI32 @@ -1043,15 +1045,16 @@ #define __NR_seccomp (__NR_Linux + 316) #define __NR_getrandom (__NR_Linux + 317) #define __NR_memfd_create (__NR_Linux + 318) +#define __NR_memfd_create (__NR_Linux + 319) /* * Offset of the last N32 flavoured syscall */ -#define __NR_Linux_syscalls 318 +#define __NR_Linux_syscalls 319 #endif /* _MIPS_SIM == _MIPS_SIM_NABI32 */ #define __NR_N32_Linux 6000 -#define __NR_N32_Linux_syscalls 318 +#define __NR_N32_Linux_syscalls 319 #endif /* _UAPI_ASM_UNISTD_H */ diff --git a/arch/mips/kernel/scall32-o32.S b/arch/mips/kernel/scall32-o32.S index 744cd10ba599..00cad1005a16 100644 --- a/arch/mips/kernel/scall32-o32.S +++ b/arch/mips/kernel/scall32-o32.S @@ -579,3 +579,4 @@ EXPORT(sys_call_table) PTR sys_seccomp PTR sys_getrandom PTR sys_memfd_create + PTR sys_bpf /* 4355 */ diff --git a/arch/mips/kernel/scall64-64.S b/arch/mips/kernel/scall64-64.S index 002b1bc09c38..5251565e344b 100644 --- a/arch/mips/kernel/scall64-64.S +++ b/arch/mips/kernel/scall64-64.S @@ -434,4 +434,5 @@ EXPORT(sys_call_table) PTR sys_seccomp PTR sys_getrandom PTR sys_memfd_create + PTR sys_bpf /* 5315 */ .size sys_call_table,.-sys_call_table diff --git a/arch/mips/kernel/scall64-n32.S b/arch/mips/kernel/scall64-n32.S index ca6cbbe9805b..77e74398b828 100644 --- a/arch/mips/kernel/scall64-n32.S +++ b/arch/mips/kernel/scall64-n32.S @@ -427,4 +427,5 @@ EXPORT(sysn32_call_table) PTR sys_seccomp PTR sys_getrandom PTR sys_memfd_create + PTR sys_bpf .size sysn32_call_table,.-sysn32_call_table diff --git a/arch/mips/kernel/scall64-o32.S b/arch/mips/kernel/scall64-o32.S index 9e10d11fbb84..6f8db9f728e8 100644 --- a/arch/mips/kernel/scall64-o32.S +++ b/arch/mips/kernel/scall64-o32.S @@ -564,4 +564,5 @@ EXPORT(sys32_call_table) PTR sys_seccomp PTR sys_getrandom PTR sys_memfd_create + PTR sys_bpf /* 4355 */ .size sys32_call_table,.-sys32_call_table From 1f759bb3a2a0d75ceeeec729b1c66a7f443631ba Mon Sep 17 00:00:00 2001 From: Martin Schwidefsky Date: Mon, 20 Oct 2014 10:24:39 +0200 Subject: [PATCH 018/371] s390/time: use stck clock fast for do_account_vtime The last high frequency call site of the STCK instruction is do_account_vtime. Replace it with the faster STCKF instruction. Signed-off-by: Martin Schwidefsky --- arch/s390/kernel/vtime.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/arch/s390/kernel/vtime.c b/arch/s390/kernel/vtime.c index 416f2a323ba5..7f0089d9a4aa 100644 --- a/arch/s390/kernel/vtime.c +++ b/arch/s390/kernel/vtime.c @@ -66,7 +66,11 @@ static int do_account_vtime(struct task_struct *tsk, int hardirq_offset) clock = S390_lowcore.last_update_clock; asm volatile( " stpt %0\n" /* Store current cpu timer value */ +#ifdef CONFIG_HAVE_MARCH_Z9_109_FEATURES + " stckf %1" /* Store current tod clock value */ +#else " stck %1" /* Store current tod clock value */ +#endif : "=m" (S390_lowcore.last_update_timer), "=m" (S390_lowcore.last_update_clock)); S390_lowcore.system_timer += timer - S390_lowcore.last_update_timer; From 9b2efe035eafb1a29ff3dfe21ed0e755aac09130 Mon Sep 17 00:00:00 2001 From: Heiko Carstens Date: Mon, 27 Oct 2014 08:28:08 +0100 Subject: [PATCH 019/371] s390/vdso: fix stack corruption The kernel provided vdso functions do not get a stack frame from the calling function and therefore may not change the stack contents, unless they allocate space on their own. This problem was exposed with 070b7be633dc "s390/vdso: replace stck with stcke" which writes 16 bytes instead of 8 bytes into the stack frame. These additional 8 bytes however were indeed used by the caller (glibc) to save data and therefore this data was corrupted by the vdso code. Signed-off-by: Heiko Carstens Signed-off-by: Martin Schwidefsky --- arch/s390/kernel/vdso32/clock_gettime.S | 12 ++++++++---- arch/s390/kernel/vdso32/gettimeofday.S | 14 ++++++++------ arch/s390/kernel/vdso64/clock_gettime.S | 13 +++++++++---- arch/s390/kernel/vdso64/gettimeofday.S | 6 ++++-- 4 files changed, 29 insertions(+), 16 deletions(-) diff --git a/arch/s390/kernel/vdso32/clock_gettime.S b/arch/s390/kernel/vdso32/clock_gettime.S index 48c2206a3956..5eec9afbb5b5 100644 --- a/arch/s390/kernel/vdso32/clock_gettime.S +++ b/arch/s390/kernel/vdso32/clock_gettime.S @@ -19,6 +19,7 @@ .type __kernel_clock_gettime,@function __kernel_clock_gettime: .cfi_startproc + ahi %r15,-16 basr %r5,0 0: al %r5,21f-0b(%r5) /* get &_vdso_data */ chi %r2,__CLOCK_REALTIME_COARSE @@ -34,8 +35,8 @@ __kernel_clock_gettime: 1: l %r4,__VDSO_UPD_COUNT+4(%r5) /* load update counter */ tml %r4,0x0001 /* pending update ? loop */ jnz 1b - stcke 24(%r15) /* Store TOD clock */ - lm %r0,%r1,25(%r15) + stcke 0(%r15) /* Store TOD clock */ + lm %r0,%r1,1(%r15) s %r0,__VDSO_XTIME_STAMP(%r5) /* TOD - cycle_last */ sl %r1,__VDSO_XTIME_STAMP+4(%r5) brc 3,2f @@ -70,6 +71,7 @@ __kernel_clock_gettime: 8: st %r2,0(%r3) /* store tp->tv_sec */ st %r1,4(%r3) /* store tp->tv_nsec */ lhi %r2,0 + ahi %r15,16 br %r14 /* CLOCK_MONOTONIC_COARSE */ @@ -96,8 +98,8 @@ __kernel_clock_gettime: 11: l %r4,__VDSO_UPD_COUNT+4(%r5) /* load update counter */ tml %r4,0x0001 /* pending update ? loop */ jnz 11b - stcke 24(%r15) /* Store TOD clock */ - lm %r0,%r1,25(%r15) + stcke 0(%r15) /* Store TOD clock */ + lm %r0,%r1,1(%r15) s %r0,__VDSO_XTIME_STAMP(%r5) /* TOD - cycle_last */ sl %r1,__VDSO_XTIME_STAMP+4(%r5) brc 3,12f @@ -132,11 +134,13 @@ __kernel_clock_gettime: 17: st %r2,0(%r3) /* store tp->tv_sec */ st %r1,4(%r3) /* store tp->tv_nsec */ lhi %r2,0 + ahi %r15,16 br %r14 /* Fallback to system call */ 19: lhi %r1,__NR_clock_gettime svc 0 + ahi %r15,16 br %r14 20: .long 1000000000 diff --git a/arch/s390/kernel/vdso32/gettimeofday.S b/arch/s390/kernel/vdso32/gettimeofday.S index 60def5f562db..719de6186b20 100644 --- a/arch/s390/kernel/vdso32/gettimeofday.S +++ b/arch/s390/kernel/vdso32/gettimeofday.S @@ -19,6 +19,7 @@ .type __kernel_gettimeofday,@function __kernel_gettimeofday: .cfi_startproc + ahi %r15,-16 basr %r5,0 0: al %r5,13f-0b(%r5) /* get &_vdso_data */ 1: ltr %r3,%r3 /* check if tz is NULL */ @@ -29,30 +30,30 @@ __kernel_gettimeofday: l %r4,__VDSO_UPD_COUNT+4(%r5) /* load update counter */ tml %r4,0x0001 /* pending update ? loop */ jnz 1b - stcke 24(%r15) /* Store TOD clock */ - lm %r0,%r1,25(%r15) + stcke 0(%r15) /* Store TOD clock */ + lm %r0,%r1,1(%r15) s %r0,__VDSO_XTIME_STAMP(%r5) /* TOD - cycle_last */ sl %r1,__VDSO_XTIME_STAMP+4(%r5) brc 3,3f ahi %r0,-1 3: ms %r0,__VDSO_TK_MULT(%r5) /* * tk->mult */ - st %r0,24(%r15) + st %r0,0(%r15) l %r0,__VDSO_TK_MULT(%r5) ltr %r1,%r1 mr %r0,%r0 jnm 4f a %r0,__VDSO_TK_MULT(%r5) -4: al %r0,24(%r15) +4: al %r0,0(%r15) al %r0,__VDSO_XTIME_NSEC(%r5) /* + xtime */ al %r1,__VDSO_XTIME_NSEC+4(%r5) brc 12,5f ahi %r0,1 -5: mvc 24(4,%r15),__VDSO_XTIME_SEC+4(%r5) +5: mvc 0(4,%r15),__VDSO_XTIME_SEC+4(%r5) cl %r4,__VDSO_UPD_COUNT+4(%r5) /* check update counter */ jne 1b l %r4,__VDSO_TK_SHIFT(%r5) /* Timekeeper shift */ srdl %r0,0(%r4) /* >> tk->shift */ - l %r4,24(%r15) /* get tv_sec from stack */ + l %r4,0(%r15) /* get tv_sec from stack */ basr %r5,0 6: ltr %r0,%r0 jnz 7f @@ -71,6 +72,7 @@ __kernel_gettimeofday: 9: srl %r0,6 st %r0,4(%r2) /* store tv->tv_usec */ 10: slr %r2,%r2 + ahi %r15,16 br %r14 11: .long 1000000000 12: .long 274877907 diff --git a/arch/s390/kernel/vdso64/clock_gettime.S b/arch/s390/kernel/vdso64/clock_gettime.S index 9d9761f8e110..7699e735ae28 100644 --- a/arch/s390/kernel/vdso64/clock_gettime.S +++ b/arch/s390/kernel/vdso64/clock_gettime.S @@ -19,6 +19,7 @@ .type __kernel_clock_gettime,@function __kernel_clock_gettime: .cfi_startproc + aghi %r15,-16 larl %r5,_vdso_data cghi %r2,__CLOCK_REALTIME_COARSE je 4f @@ -37,10 +38,10 @@ __kernel_clock_gettime: 0: lg %r4,__VDSO_UPD_COUNT(%r5) /* load update counter */ tmll %r4,0x0001 /* pending update ? loop */ jnz 0b - stcke 48(%r15) /* Store TOD clock */ + stcke 0(%r15) /* Store TOD clock */ lgf %r2,__VDSO_TK_SHIFT(%r5) /* Timekeeper shift */ lg %r0,__VDSO_WTOM_SEC(%r5) - lg %r1,49(%r15) + lg %r1,1(%r15) sg %r1,__VDSO_XTIME_STAMP(%r5) /* TOD - cycle_last */ msgf %r1,__VDSO_TK_MULT(%r5) /* * tk->mult */ alg %r1,__VDSO_WTOM_NSEC(%r5) @@ -56,6 +57,7 @@ __kernel_clock_gettime: 2: stg %r0,0(%r3) /* store tp->tv_sec */ stg %r1,8(%r3) /* store tp->tv_nsec */ lghi %r2,0 + aghi %r15,16 br %r14 /* CLOCK_MONOTONIC_COARSE */ @@ -82,9 +84,9 @@ __kernel_clock_gettime: 5: lg %r4,__VDSO_UPD_COUNT(%r5) /* load update counter */ tmll %r4,0x0001 /* pending update ? loop */ jnz 5b - stcke 48(%r15) /* Store TOD clock */ + stcke 0(%r15) /* Store TOD clock */ lgf %r2,__VDSO_TK_SHIFT(%r5) /* Timekeeper shift */ - lg %r1,49(%r15) + lg %r1,1(%r15) sg %r1,__VDSO_XTIME_STAMP(%r5) /* TOD - cycle_last */ msgf %r1,__VDSO_TK_MULT(%r5) /* * tk->mult */ alg %r1,__VDSO_XTIME_NSEC(%r5) /* + tk->xtime_nsec */ @@ -101,6 +103,7 @@ __kernel_clock_gettime: 7: stg %r0,0(%r3) /* store tp->tv_sec */ stg %r1,8(%r3) /* store tp->tv_nsec */ lghi %r2,0 + aghi %r15,16 br %r14 /* CLOCK_THREAD_CPUTIME_ID for this thread */ @@ -134,11 +137,13 @@ __kernel_clock_gettime: slgr %r4,%r0 /* r4 = tv_nsec */ stg %r4,8(%r3) lghi %r2,0 + aghi %r15,16 br %r14 /* Fallback to system call */ 12: lghi %r1,__NR_clock_gettime svc 0 + aghi %r15,16 br %r14 13: .quad 1000000000 diff --git a/arch/s390/kernel/vdso64/gettimeofday.S b/arch/s390/kernel/vdso64/gettimeofday.S index 7a344995a97f..6ce46707663c 100644 --- a/arch/s390/kernel/vdso64/gettimeofday.S +++ b/arch/s390/kernel/vdso64/gettimeofday.S @@ -19,6 +19,7 @@ .type __kernel_gettimeofday,@function __kernel_gettimeofday: .cfi_startproc + aghi %r15,-16 larl %r5,_vdso_data 0: ltgr %r3,%r3 /* check if tz is NULL */ je 1f @@ -28,8 +29,8 @@ __kernel_gettimeofday: lg %r4,__VDSO_UPD_COUNT(%r5) /* load update counter */ tmll %r4,0x0001 /* pending update ? loop */ jnz 0b - stcke 48(%r15) /* Store TOD clock */ - lg %r1,49(%r15) + stcke 0(%r15) /* Store TOD clock */ + lg %r1,1(%r15) sg %r1,__VDSO_XTIME_STAMP(%r5) /* TOD - cycle_last */ msgf %r1,__VDSO_TK_MULT(%r5) /* * tk->mult */ alg %r1,__VDSO_XTIME_NSEC(%r5) /* + tk->xtime_nsec */ @@ -50,6 +51,7 @@ __kernel_gettimeofday: srlg %r0,%r0,6 stg %r0,8(%r2) /* store tv->tv_usec */ 4: lghi %r2,0 + aghi %r15,16 br %r14 5: .quad 1000000000 .long 274877907 From e43b49a0cb9c9ea958edcf7520aae2490549c68b Mon Sep 17 00:00:00 2001 From: Martin Schwidefsky Date: Mon, 16 Jun 2014 10:21:31 -0700 Subject: [PATCH 020/371] s390: update default configuration Signed-off-by: Martin Schwidefsky --- arch/s390/configs/default_defconfig | 36 ++++++++++--------------- arch/s390/configs/gcov_defconfig | 25 ++++------------- arch/s390/configs/performance_defconfig | 30 +++++++-------------- arch/s390/configs/zfcpdump_defconfig | 10 ++----- arch/s390/defconfig | 5 ++-- 5 files changed, 32 insertions(+), 74 deletions(-) diff --git a/arch/s390/configs/default_defconfig b/arch/s390/configs/default_defconfig index 9d94fdd9f525..9432d0f202ef 100644 --- a/arch/s390/configs/default_defconfig +++ b/arch/s390/configs/default_defconfig @@ -35,7 +35,6 @@ CONFIG_MODULE_UNLOAD=y CONFIG_MODULE_FORCE_UNLOAD=y CONFIG_MODVERSIONS=y CONFIG_MODULE_SRCVERSION_ALL=y -CONFIG_BLK_DEV_INTEGRITY=y CONFIG_BLK_DEV_THROTTLING=y CONFIG_PARTITION_ADVANCED=y CONFIG_IBM_PARTITION=y @@ -245,6 +244,7 @@ CONFIG_NF_TABLES_IPV4=m CONFIG_NFT_CHAIN_ROUTE_IPV4=m CONFIG_NFT_CHAIN_NAT_IPV4=m CONFIG_NF_TABLES_ARP=m +CONFIG_NF_NAT_IPV4=m CONFIG_IP_NF_IPTABLES=m CONFIG_IP_NF_MATCH_AH=m CONFIG_IP_NF_MATCH_ECN=m @@ -252,11 +252,6 @@ CONFIG_IP_NF_MATCH_RPFILTER=m CONFIG_IP_NF_MATCH_TTL=m CONFIG_IP_NF_FILTER=m CONFIG_IP_NF_TARGET_REJECT=m -CONFIG_IP_NF_TARGET_ULOG=m -CONFIG_NF_NAT_IPV4=m -CONFIG_IP_NF_TARGET_MASQUERADE=m -CONFIG_IP_NF_TARGET_NETMAP=m -CONFIG_IP_NF_TARGET_REDIRECT=m CONFIG_IP_NF_MANGLE=m CONFIG_IP_NF_TARGET_CLUSTERIP=m CONFIG_IP_NF_TARGET_ECN=m @@ -270,6 +265,7 @@ CONFIG_NF_CONNTRACK_IPV6=m CONFIG_NF_TABLES_IPV6=m CONFIG_NFT_CHAIN_ROUTE_IPV6=m CONFIG_NFT_CHAIN_NAT_IPV6=m +CONFIG_NF_NAT_IPV6=m CONFIG_IP6_NF_IPTABLES=m CONFIG_IP6_NF_MATCH_AH=m CONFIG_IP6_NF_MATCH_EUI64=m @@ -286,9 +282,6 @@ CONFIG_IP6_NF_TARGET_REJECT=m CONFIG_IP6_NF_MANGLE=m CONFIG_IP6_NF_RAW=m CONFIG_IP6_NF_SECURITY=m -CONFIG_NF_NAT_IPV6=m -CONFIG_IP6_NF_TARGET_MASQUERADE=m -CONFIG_IP6_NF_TARGET_NPT=m CONFIG_NF_TABLES_BRIDGE=m CONFIG_NET_SCTPPROBE=m CONFIG_RDS=m @@ -374,14 +367,13 @@ CONFIG_BLK_DEV_SR=m CONFIG_CHR_DEV_SG=y CONFIG_CHR_DEV_SCH=m CONFIG_SCSI_ENCLOSURE=m -CONFIG_SCSI_MULTI_LUN=y CONFIG_SCSI_CONSTANTS=y CONFIG_SCSI_LOGGING=y CONFIG_SCSI_SPI_ATTRS=m +CONFIG_SCSI_FC_ATTRS=y CONFIG_SCSI_SAS_LIBSAS=m CONFIG_SCSI_SRP_ATTRS=m CONFIG_ISCSI_TCP=m -CONFIG_LIBFCOE=m CONFIG_SCSI_DEBUG=m CONFIG_ZFCP=y CONFIG_SCSI_VIRTIO=m @@ -427,7 +419,6 @@ CONFIG_VIRTIO_NET=m CONFIG_NLMON=m CONFIG_VHOST_NET=m # CONFIG_NET_VENDOR_ARC is not set -# CONFIG_NET_CADENCE is not set # CONFIG_NET_VENDOR_CHELSIO is not set # CONFIG_NET_VENDOR_INTEL is not set # CONFIG_NET_VENDOR_MARVELL is not set @@ -481,14 +472,14 @@ CONFIG_JFS_FS=m CONFIG_JFS_POSIX_ACL=y CONFIG_JFS_SECURITY=y CONFIG_JFS_STATISTICS=y -CONFIG_XFS_FS=m +CONFIG_XFS_FS=y CONFIG_XFS_QUOTA=y CONFIG_XFS_POSIX_ACL=y CONFIG_XFS_RT=y CONFIG_XFS_DEBUG=y CONFIG_GFS2_FS=m CONFIG_OCFS2_FS=m -CONFIG_BTRFS_FS=m +CONFIG_BTRFS_FS=y CONFIG_BTRFS_FS_POSIX_ACL=y CONFIG_NILFS2_FS=m CONFIG_FANOTIFY=y @@ -574,7 +565,6 @@ CONFIG_DEBUG_SHIRQ=y CONFIG_DETECT_HUNG_TASK=y CONFIG_TIMER_STATS=y CONFIG_DEBUG_RT_MUTEXES=y -CONFIG_RT_MUTEX_TESTER=y CONFIG_DEBUG_WW_MUTEX_SLOWPATH=y CONFIG_PROVE_LOCKING=y CONFIG_LOCK_STAT=y @@ -600,8 +590,13 @@ CONFIG_FAULT_INJECTION_DEBUG_FS=y CONFIG_FAULT_INJECTION_STACKTRACE_FILTER=y CONFIG_LATENCYTOP=y CONFIG_DEBUG_STRICT_USER_COPY_CHECKS=y +CONFIG_IRQSOFF_TRACER=y +CONFIG_PREEMPT_TRACER=y +CONFIG_SCHED_TRACER=y +CONFIG_FTRACE_SYSCALLS=y +CONFIG_STACK_TRACER=y CONFIG_BLK_DEV_IO_TRACE=y -# CONFIG_KPROBE_EVENT is not set +CONFIG_UPROBE_EVENT=y CONFIG_LKDTM=m CONFIG_TEST_LIST_SORT=y CONFIG_KPROBES_SANITY_TEST=y @@ -609,7 +604,10 @@ CONFIG_RBTREE_TEST=y CONFIG_INTERVAL_TREE_TEST=m CONFIG_PERCPU_TEST=m CONFIG_ATOMIC64_SELFTEST=y +CONFIG_TEST_STRING_HELPERS=y +CONFIG_TEST_KSTRTOX=y CONFIG_DMA_API_DEBUG=y +CONFIG_TEST_BPF=m # CONFIG_STRICT_DEVMEM is not set CONFIG_S390_PTDUMP=y CONFIG_ENCRYPTED_KEYS=m @@ -673,12 +671,6 @@ CONFIG_ASYMMETRIC_PUBLIC_KEY_SUBTYPE=m CONFIG_X509_CERTIFICATE_PARSER=m CONFIG_CRC7=m CONFIG_CRC8=m -CONFIG_XZ_DEC_X86=y -CONFIG_XZ_DEC_POWERPC=y -CONFIG_XZ_DEC_IA64=y -CONFIG_XZ_DEC_ARM=y -CONFIG_XZ_DEC_ARMTHUMB=y -CONFIG_XZ_DEC_SPARC=y CONFIG_CORDIC=m CONFIG_CMM=m CONFIG_APPLDATA_BASE=y diff --git a/arch/s390/configs/gcov_defconfig b/arch/s390/configs/gcov_defconfig index 90f514baa37d..219dca6ea926 100644 --- a/arch/s390/configs/gcov_defconfig +++ b/arch/s390/configs/gcov_defconfig @@ -35,7 +35,6 @@ CONFIG_MODULE_UNLOAD=y CONFIG_MODULE_FORCE_UNLOAD=y CONFIG_MODVERSIONS=y CONFIG_MODULE_SRCVERSION_ALL=y -CONFIG_BLK_DEV_INTEGRITY=y CONFIG_BLK_DEV_THROTTLING=y CONFIG_PARTITION_ADVANCED=y CONFIG_IBM_PARTITION=y @@ -243,6 +242,7 @@ CONFIG_NF_TABLES_IPV4=m CONFIG_NFT_CHAIN_ROUTE_IPV4=m CONFIG_NFT_CHAIN_NAT_IPV4=m CONFIG_NF_TABLES_ARP=m +CONFIG_NF_NAT_IPV4=m CONFIG_IP_NF_IPTABLES=m CONFIG_IP_NF_MATCH_AH=m CONFIG_IP_NF_MATCH_ECN=m @@ -250,11 +250,6 @@ CONFIG_IP_NF_MATCH_RPFILTER=m CONFIG_IP_NF_MATCH_TTL=m CONFIG_IP_NF_FILTER=m CONFIG_IP_NF_TARGET_REJECT=m -CONFIG_IP_NF_TARGET_ULOG=m -CONFIG_NF_NAT_IPV4=m -CONFIG_IP_NF_TARGET_MASQUERADE=m -CONFIG_IP_NF_TARGET_NETMAP=m -CONFIG_IP_NF_TARGET_REDIRECT=m CONFIG_IP_NF_MANGLE=m CONFIG_IP_NF_TARGET_CLUSTERIP=m CONFIG_IP_NF_TARGET_ECN=m @@ -268,6 +263,7 @@ CONFIG_NF_CONNTRACK_IPV6=m CONFIG_NF_TABLES_IPV6=m CONFIG_NFT_CHAIN_ROUTE_IPV6=m CONFIG_NFT_CHAIN_NAT_IPV6=m +CONFIG_NF_NAT_IPV6=m CONFIG_IP6_NF_IPTABLES=m CONFIG_IP6_NF_MATCH_AH=m CONFIG_IP6_NF_MATCH_EUI64=m @@ -284,9 +280,6 @@ CONFIG_IP6_NF_TARGET_REJECT=m CONFIG_IP6_NF_MANGLE=m CONFIG_IP6_NF_RAW=m CONFIG_IP6_NF_SECURITY=m -CONFIG_NF_NAT_IPV6=m -CONFIG_IP6_NF_TARGET_MASQUERADE=m -CONFIG_IP6_NF_TARGET_NPT=m CONFIG_NF_TABLES_BRIDGE=m CONFIG_NET_SCTPPROBE=m CONFIG_RDS=m @@ -371,14 +364,13 @@ CONFIG_BLK_DEV_SR=m CONFIG_CHR_DEV_SG=y CONFIG_CHR_DEV_SCH=m CONFIG_SCSI_ENCLOSURE=m -CONFIG_SCSI_MULTI_LUN=y CONFIG_SCSI_CONSTANTS=y CONFIG_SCSI_LOGGING=y CONFIG_SCSI_SPI_ATTRS=m +CONFIG_SCSI_FC_ATTRS=y CONFIG_SCSI_SAS_LIBSAS=m CONFIG_SCSI_SRP_ATTRS=m CONFIG_ISCSI_TCP=m -CONFIG_LIBFCOE=m CONFIG_SCSI_DEBUG=m CONFIG_ZFCP=y CONFIG_SCSI_VIRTIO=m @@ -424,7 +416,6 @@ CONFIG_VIRTIO_NET=m CONFIG_NLMON=m CONFIG_VHOST_NET=m # CONFIG_NET_VENDOR_ARC is not set -# CONFIG_NET_CADENCE is not set # CONFIG_NET_VENDOR_CHELSIO is not set # CONFIG_NET_VENDOR_INTEL is not set # CONFIG_NET_VENDOR_MARVELL is not set @@ -478,13 +469,13 @@ CONFIG_JFS_FS=m CONFIG_JFS_POSIX_ACL=y CONFIG_JFS_SECURITY=y CONFIG_JFS_STATISTICS=y -CONFIG_XFS_FS=m +CONFIG_XFS_FS=y CONFIG_XFS_QUOTA=y CONFIG_XFS_POSIX_ACL=y CONFIG_XFS_RT=y CONFIG_GFS2_FS=m CONFIG_OCFS2_FS=m -CONFIG_BTRFS_FS=m +CONFIG_BTRFS_FS=y CONFIG_BTRFS_FS_POSIX_ACL=y CONFIG_NILFS2_FS=m CONFIG_FANOTIFY=y @@ -626,12 +617,6 @@ CONFIG_ASYMMETRIC_PUBLIC_KEY_SUBTYPE=m CONFIG_X509_CERTIFICATE_PARSER=m CONFIG_CRC7=m CONFIG_CRC8=m -CONFIG_XZ_DEC_X86=y -CONFIG_XZ_DEC_POWERPC=y -CONFIG_XZ_DEC_IA64=y -CONFIG_XZ_DEC_ARM=y -CONFIG_XZ_DEC_ARMTHUMB=y -CONFIG_XZ_DEC_SPARC=y CONFIG_CORDIC=m CONFIG_CMM=m CONFIG_APPLDATA_BASE=y diff --git a/arch/s390/configs/performance_defconfig b/arch/s390/configs/performance_defconfig index 13559d32af69..822c2f2e0c25 100644 --- a/arch/s390/configs/performance_defconfig +++ b/arch/s390/configs/performance_defconfig @@ -33,7 +33,6 @@ CONFIG_MODULE_UNLOAD=y CONFIG_MODULE_FORCE_UNLOAD=y CONFIG_MODVERSIONS=y CONFIG_MODULE_SRCVERSION_ALL=y -CONFIG_BLK_DEV_INTEGRITY=y CONFIG_BLK_DEV_THROTTLING=y CONFIG_PARTITION_ADVANCED=y CONFIG_IBM_PARTITION=y @@ -241,6 +240,7 @@ CONFIG_NF_TABLES_IPV4=m CONFIG_NFT_CHAIN_ROUTE_IPV4=m CONFIG_NFT_CHAIN_NAT_IPV4=m CONFIG_NF_TABLES_ARP=m +CONFIG_NF_NAT_IPV4=m CONFIG_IP_NF_IPTABLES=m CONFIG_IP_NF_MATCH_AH=m CONFIG_IP_NF_MATCH_ECN=m @@ -248,11 +248,6 @@ CONFIG_IP_NF_MATCH_RPFILTER=m CONFIG_IP_NF_MATCH_TTL=m CONFIG_IP_NF_FILTER=m CONFIG_IP_NF_TARGET_REJECT=m -CONFIG_IP_NF_TARGET_ULOG=m -CONFIG_NF_NAT_IPV4=m -CONFIG_IP_NF_TARGET_MASQUERADE=m -CONFIG_IP_NF_TARGET_NETMAP=m -CONFIG_IP_NF_TARGET_REDIRECT=m CONFIG_IP_NF_MANGLE=m CONFIG_IP_NF_TARGET_CLUSTERIP=m CONFIG_IP_NF_TARGET_ECN=m @@ -266,6 +261,7 @@ CONFIG_NF_CONNTRACK_IPV6=m CONFIG_NF_TABLES_IPV6=m CONFIG_NFT_CHAIN_ROUTE_IPV6=m CONFIG_NFT_CHAIN_NAT_IPV6=m +CONFIG_NF_NAT_IPV6=m CONFIG_IP6_NF_IPTABLES=m CONFIG_IP6_NF_MATCH_AH=m CONFIG_IP6_NF_MATCH_EUI64=m @@ -282,9 +278,6 @@ CONFIG_IP6_NF_TARGET_REJECT=m CONFIG_IP6_NF_MANGLE=m CONFIG_IP6_NF_RAW=m CONFIG_IP6_NF_SECURITY=m -CONFIG_NF_NAT_IPV6=m -CONFIG_IP6_NF_TARGET_MASQUERADE=m -CONFIG_IP6_NF_TARGET_NPT=m CONFIG_NF_TABLES_BRIDGE=m CONFIG_NET_SCTPPROBE=m CONFIG_RDS=m @@ -369,14 +362,13 @@ CONFIG_BLK_DEV_SR=m CONFIG_CHR_DEV_SG=y CONFIG_CHR_DEV_SCH=m CONFIG_SCSI_ENCLOSURE=m -CONFIG_SCSI_MULTI_LUN=y CONFIG_SCSI_CONSTANTS=y CONFIG_SCSI_LOGGING=y CONFIG_SCSI_SPI_ATTRS=m +CONFIG_SCSI_FC_ATTRS=y CONFIG_SCSI_SAS_LIBSAS=m CONFIG_SCSI_SRP_ATTRS=m CONFIG_ISCSI_TCP=m -CONFIG_LIBFCOE=m CONFIG_SCSI_DEBUG=m CONFIG_ZFCP=y CONFIG_SCSI_VIRTIO=m @@ -422,7 +414,6 @@ CONFIG_VIRTIO_NET=m CONFIG_NLMON=m CONFIG_VHOST_NET=m # CONFIG_NET_VENDOR_ARC is not set -# CONFIG_NET_CADENCE is not set # CONFIG_NET_VENDOR_CHELSIO is not set # CONFIG_NET_VENDOR_INTEL is not set # CONFIG_NET_VENDOR_MARVELL is not set @@ -476,13 +467,13 @@ CONFIG_JFS_FS=m CONFIG_JFS_POSIX_ACL=y CONFIG_JFS_SECURITY=y CONFIG_JFS_STATISTICS=y -CONFIG_XFS_FS=m +CONFIG_XFS_FS=y CONFIG_XFS_QUOTA=y CONFIG_XFS_POSIX_ACL=y CONFIG_XFS_RT=y CONFIG_GFS2_FS=m CONFIG_OCFS2_FS=m -CONFIG_BTRFS_FS=m +CONFIG_BTRFS_FS=y CONFIG_BTRFS_FS_POSIX_ACL=y CONFIG_NILFS2_FS=m CONFIG_FANOTIFY=y @@ -550,8 +541,11 @@ CONFIG_TIMER_STATS=y CONFIG_RCU_TORTURE_TEST=m CONFIG_RCU_CPU_STALL_TIMEOUT=60 CONFIG_LATENCYTOP=y +CONFIG_SCHED_TRACER=y +CONFIG_FTRACE_SYSCALLS=y +CONFIG_STACK_TRACER=y CONFIG_BLK_DEV_IO_TRACE=y -# CONFIG_KPROBE_EVENT is not set +CONFIG_UPROBE_EVENT=y CONFIG_LKDTM=m CONFIG_PERCPU_TEST=m CONFIG_ATOMIC64_SELFTEST=y @@ -618,12 +612,6 @@ CONFIG_ASYMMETRIC_PUBLIC_KEY_SUBTYPE=m CONFIG_X509_CERTIFICATE_PARSER=m CONFIG_CRC7=m CONFIG_CRC8=m -CONFIG_XZ_DEC_X86=y -CONFIG_XZ_DEC_POWERPC=y -CONFIG_XZ_DEC_IA64=y -CONFIG_XZ_DEC_ARM=y -CONFIG_XZ_DEC_ARMTHUMB=y -CONFIG_XZ_DEC_SPARC=y CONFIG_CORDIC=m CONFIG_CMM=m CONFIG_APPLDATA_BASE=y diff --git a/arch/s390/configs/zfcpdump_defconfig b/arch/s390/configs/zfcpdump_defconfig index e376789f2d8d..9d63051ebec4 100644 --- a/arch/s390/configs/zfcpdump_defconfig +++ b/arch/s390/configs/zfcpdump_defconfig @@ -22,8 +22,8 @@ CONFIG_HZ_100=y CONFIG_CRASH_DUMP=y # CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS is not set # CONFIG_SECCOMP is not set -# CONFIG_IUCV is not set CONFIG_NET=y +# CONFIG_IUCV is not set CONFIG_ATM=y CONFIG_ATM_LANE=y CONFIG_UEVENT_HELPER_PATH="/sbin/hotplug" @@ -36,9 +36,9 @@ CONFIG_ENCLOSURE_SERVICES=y CONFIG_SCSI=y CONFIG_BLK_DEV_SD=y CONFIG_SCSI_ENCLOSURE=y -CONFIG_SCSI_MULTI_LUN=y CONFIG_SCSI_CONSTANTS=y CONFIG_SCSI_LOGGING=y +CONFIG_SCSI_FC_ATTRS=y CONFIG_SCSI_SRP_ATTRS=y CONFIG_ZFCP=y # CONFIG_INPUT_MOUSEDEV_PSAUX is not set @@ -75,12 +75,6 @@ CONFIG_DEBUG_KERNEL=y CONFIG_RCU_CPU_STALL_TIMEOUT=60 # CONFIG_FTRACE is not set # CONFIG_STRICT_DEVMEM is not set -CONFIG_XZ_DEC_X86=y -CONFIG_XZ_DEC_POWERPC=y -CONFIG_XZ_DEC_IA64=y -CONFIG_XZ_DEC_ARM=y -CONFIG_XZ_DEC_ARMTHUMB=y -CONFIG_XZ_DEC_SPARC=y # CONFIG_PFAULT is not set # CONFIG_S390_HYPFS_FS is not set # CONFIG_VIRTUALIZATION is not set diff --git a/arch/s390/defconfig b/arch/s390/defconfig index fab35a8efa4f..785c5f24d6f9 100644 --- a/arch/s390/defconfig +++ b/arch/s390/defconfig @@ -92,10 +92,10 @@ CONFIG_CHR_DEV_ST=y CONFIG_BLK_DEV_SR=y CONFIG_BLK_DEV_SR_VENDOR=y CONFIG_CHR_DEV_SG=y -CONFIG_SCSI_MULTI_LUN=y CONFIG_SCSI_CONSTANTS=y CONFIG_SCSI_LOGGING=y CONFIG_SCSI_SCAN_ASYNC=y +CONFIG_SCSI_FC_ATTRS=y CONFIG_ZFCP=y CONFIG_SCSI_VIRTIO=y CONFIG_NETDEVICES=y @@ -164,14 +164,13 @@ CONFIG_CRYPTO_CMAC=m CONFIG_CRYPTO_XCBC=m CONFIG_CRYPTO_VMAC=m CONFIG_CRYPTO_CRC32=m -CONFIG_CRYPTO_CRCT10DIF=m CONFIG_CRYPTO_MD4=m CONFIG_CRYPTO_MICHAEL_MIC=m CONFIG_CRYPTO_RMD128=m CONFIG_CRYPTO_RMD160=m CONFIG_CRYPTO_RMD256=m CONFIG_CRYPTO_RMD320=m -CONFIG_CRYPTO_SHA256=m +CONFIG_CRYPTO_SHA256=y CONFIG_CRYPTO_SHA512=m CONFIG_CRYPTO_TGR192=m CONFIG_CRYPTO_WP512=m From aa1cf25887099bba68f1f3879c0d394e08b8779f Mon Sep 17 00:00:00 2001 From: Simon Horman Date: Mon, 27 Oct 2014 09:14:30 +0900 Subject: [PATCH 021/371] ata: sata_rcar: Disable DIPM mode for r8a7790 ES1 Unlike other SATA R-Car r8a7790 controllers the r8a7790 ES1 SATA R-Car controller needs to be run with DIPM disabled. Signed-off-by: Simon Horman Signed-off-by: Tejun Heo Cc: stable@vger.kernel.org --- Documentation/devicetree/bindings/ata/sata_rcar.txt | 3 ++- drivers/ata/sata_rcar.c | 10 ++++++++++ 2 files changed, 12 insertions(+), 1 deletion(-) diff --git a/Documentation/devicetree/bindings/ata/sata_rcar.txt b/Documentation/devicetree/bindings/ata/sata_rcar.txt index 1e6111333fa8..7dd32d321a34 100644 --- a/Documentation/devicetree/bindings/ata/sata_rcar.txt +++ b/Documentation/devicetree/bindings/ata/sata_rcar.txt @@ -3,7 +3,8 @@ Required properties: - compatible : should contain one of the following: - "renesas,sata-r8a7779" for R-Car H1 - - "renesas,sata-r8a7790" for R-Car H2 + - "renesas,sata-r8a7790-es1" for R-Car H2 ES1 + - "renesas,sata-r8a7790" for R-Car H2 other than ES1 - "renesas,sata-r8a7791" for R-Car M2 - reg : address and length of the SATA registers; - interrupts : must consist of one interrupt specifier. diff --git a/drivers/ata/sata_rcar.c b/drivers/ata/sata_rcar.c index 61eb6d77dac7..8732e42db3a9 100644 --- a/drivers/ata/sata_rcar.c +++ b/drivers/ata/sata_rcar.c @@ -146,6 +146,7 @@ enum sata_rcar_type { RCAR_GEN1_SATA, RCAR_GEN2_SATA, + RCAR_R8A7790_ES1_SATA, }; struct sata_rcar_priv { @@ -763,6 +764,9 @@ static void sata_rcar_setup_port(struct ata_host *host) ap->udma_mask = ATA_UDMA6; ap->flags |= ATA_FLAG_SATA; + if (priv->type == RCAR_R8A7790_ES1_SATA) + ap->flags |= ATA_FLAG_NO_DIPM; + ioaddr->cmd_addr = base + SDATA_REG; ioaddr->ctl_addr = base + SSDEVCON_REG; ioaddr->scr_addr = base + SCRSSTS_REG; @@ -792,6 +796,7 @@ static void sata_rcar_init_controller(struct ata_host *host) sata_rcar_gen1_phy_init(priv); break; case RCAR_GEN2_SATA: + case RCAR_R8A7790_ES1_SATA: sata_rcar_gen2_phy_init(priv); break; default: @@ -837,6 +842,10 @@ static struct of_device_id sata_rcar_match[] = { .compatible = "renesas,sata-r8a7790", .data = (void *)RCAR_GEN2_SATA }, + { + .compatible = "renesas,sata-r8a7790-es1", + .data = (void *)RCAR_R8A7790_ES1_SATA + }, { .compatible = "renesas,sata-r8a7791", .data = (void *)RCAR_GEN2_SATA @@ -849,6 +858,7 @@ static const struct platform_device_id sata_rcar_id_table[] = { { "sata_rcar", RCAR_GEN1_SATA }, /* Deprecated by "sata-r8a7779" */ { "sata-r8a7779", RCAR_GEN1_SATA }, { "sata-r8a7790", RCAR_GEN2_SATA }, + { "sata-r8a7790-es1", RCAR_R8A7790_ES1_SATA }, { "sata-r8a7791", RCAR_GEN2_SATA }, { }, }; From 03e83cbd34a4602bf0d750e5ff4bf8b7d0e066b2 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Mon, 27 Oct 2014 12:00:01 -0400 Subject: [PATCH 022/371] Revert "AHCI: Do not acquire ata_host::lock from single IRQ handler" This reverts commit 33fb0d01ce60fe4c0c12c4f0c134c5cdb818ac5a. 18dcf433f3de ("AHCI: Optimize single IRQ interrupt processing") is scheduled to be reverted. This is an optimization dependent on the mentioned commit. Revert it first. Signed-off-by: Tejun Heo --- drivers/ata/libahci.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/ata/libahci.c b/drivers/ata/libahci.c index 5eb61c9e63da..3ce3d23e4f97 100644 --- a/drivers/ata/libahci.c +++ b/drivers/ata/libahci.c @@ -1875,6 +1875,8 @@ static irqreturn_t ahci_single_irq_intr(int irq, void *dev_instance) irq_masked = irq_stat & hpriv->port_map; + spin_lock(&host->lock); + for (i = 0; i < host->n_ports; i++) { struct ata_port *ap; @@ -1906,6 +1908,8 @@ static irqreturn_t ahci_single_irq_intr(int irq, void *dev_instance) */ writel(irq_stat, mmio + HOST_IRQ_STAT); + spin_unlock(&host->lock); + VPRINTK("EXIT\n"); return handled ? IRQ_WAKE_THREAD : IRQ_NONE; From 7865f83fd2f23cbf3cd8ad0ddc2cef796f005aaf Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Mon, 27 Oct 2014 09:50:36 -0400 Subject: [PATCH 023/371] Revert "AHCI: Optimize single IRQ interrupt processing" This reverts commit 18dcf433f3ded61eb140a55e7048ec2fef79e723. IRQF_ONESHOT was missing from the conversion causing screaming interrupts problems on some setups and LKP detected measureable drop in IO performance. It looks like we'll first need to drop the threaded IRQ handling first before splitting locking. Signed-off-by: Tejun Heo Cc: Alexander Gordeev Reported-by: kernel test robot Reported-by: Marc Zyngier Link: http://lkml.kernel.org/g/20141027021651.GF27038@yliu-dev.sh.intel.com Link: http://lkml.kernel.org/g/1414082970-20775-1-git-send-email-marc.zyngier@arm.com --- drivers/ata/libahci.c | 74 ++++++++----------------------------------- 1 file changed, 13 insertions(+), 61 deletions(-) diff --git a/drivers/ata/libahci.c b/drivers/ata/libahci.c index 3ce3d23e4f97..97683e45ab04 100644 --- a/drivers/ata/libahci.c +++ b/drivers/ata/libahci.c @@ -1778,16 +1778,15 @@ static void ahci_handle_port_interrupt(struct ata_port *ap, } } -static void ahci_update_intr_status(struct ata_port *ap) +static void ahci_port_intr(struct ata_port *ap) { void __iomem *port_mmio = ahci_port_base(ap); - struct ahci_port_priv *pp = ap->private_data; u32 status; status = readl(port_mmio + PORT_IRQ_STAT); writel(status, port_mmio + PORT_IRQ_STAT); - atomic_or(status, &pp->intr_status); + ahci_handle_port_interrupt(ap, port_mmio, status); } static irqreturn_t ahci_port_thread_fn(int irq, void *dev_instance) @@ -1808,34 +1807,6 @@ static irqreturn_t ahci_port_thread_fn(int irq, void *dev_instance) return IRQ_HANDLED; } -irqreturn_t ahci_thread_fn(int irq, void *dev_instance) -{ - struct ata_host *host = dev_instance; - struct ahci_host_priv *hpriv = host->private_data; - u32 irq_masked = hpriv->port_map; - unsigned int i; - - for (i = 0; i < host->n_ports; i++) { - struct ata_port *ap; - - if (!(irq_masked & (1 << i))) - continue; - - ap = host->ports[i]; - if (ap) { - ahci_port_thread_fn(irq, ap); - VPRINTK("port %u\n", i); - } else { - VPRINTK("port %u (no irq)\n", i); - if (ata_ratelimit()) - dev_warn(host->dev, - "interrupt on disabled port %u\n", i); - } - } - - return IRQ_HANDLED; -} - static irqreturn_t ahci_multi_irqs_intr(int irq, void *dev_instance) { struct ata_port *ap = dev_instance; @@ -1885,7 +1856,7 @@ static irqreturn_t ahci_single_irq_intr(int irq, void *dev_instance) ap = host->ports[i]; if (ap) { - ahci_update_intr_status(ap); + ahci_port_intr(ap); VPRINTK("port %u\n", i); } else { VPRINTK("port %u (no irq)\n", i); @@ -1912,7 +1883,7 @@ static irqreturn_t ahci_single_irq_intr(int irq, void *dev_instance) VPRINTK("EXIT\n"); - return handled ? IRQ_WAKE_THREAD : IRQ_NONE; + return IRQ_RETVAL(handled); } unsigned int ahci_qc_issue(struct ata_queued_cmd *qc) @@ -2324,8 +2295,13 @@ static int ahci_port_start(struct ata_port *ap) */ pp->intr_mask = DEF_PORT_IRQ; - spin_lock_init(&pp->lock); - ap->lock = &pp->lock; + /* + * Switch to per-port locking in case each port has its own MSI vector. + */ + if ((hpriv->flags & AHCI_HFLAG_MULTI_MSI)) { + spin_lock_init(&pp->lock); + ap->lock = &pp->lock; + } ap->private_data = pp; @@ -2486,31 +2462,6 @@ out_free_irqs: return rc; } -static int ahci_host_activate_single_irq(struct ata_host *host, int irq, - struct scsi_host_template *sht) -{ - int i, rc; - - rc = ata_host_start(host); - if (rc) - return rc; - - rc = devm_request_threaded_irq(host->dev, irq, ahci_single_irq_intr, - ahci_thread_fn, IRQF_SHARED, - dev_driver_string(host->dev), host); - if (rc) - return rc; - - for (i = 0; i < host->n_ports; i++) - ata_port_desc(host->ports[i], "irq %d", irq); - - rc = ata_host_register(host, sht); - if (rc) - devm_free_irq(host->dev, irq, host); - - return rc; -} - /** * ahci_host_activate - start AHCI host, request IRQs and register it * @host: target ATA host @@ -2536,7 +2487,8 @@ int ahci_host_activate(struct ata_host *host, int irq, if (hpriv->flags & AHCI_HFLAG_MULTI_MSI) rc = ahci_host_activate_multi_irqs(host, irq, sht); else - rc = ahci_host_activate_single_irq(host, irq, sht); + rc = ata_host_activate(host, irq, ahci_single_irq_intr, + IRQF_SHARED, sht); return rc; } EXPORT_SYMBOL_GPL(ahci_host_activate); From 66a7cbc303f4d28f201529b06061944d51ab530c Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Mon, 27 Oct 2014 10:22:56 -0400 Subject: [PATCH 024/371] ahci: disable MSI instead of NCQ on Samsung pci-e SSDs on macbooks Samsung pci-e SSDs on macbooks failed miserably on NCQ commands, so 67809f85d31e ("ahci: disable NCQ on Samsung pci-e SSDs on macbooks") disabled NCQ on them. It turns out that NCQ is fine as long as MSI is not used, so let's turn off MSI and leave NCQ on. Signed-off-by: Tejun Heo Link: https://bugzilla.kernel.org/show_bug.cgi?id=60731 Tested-by: Tested-by: Imre Kaloz Cc: stable@vger.kernel.org Fixes: 67809f85d31e ("ahci: disable NCQ on Samsung pci-e SSDs on macbooks") --- drivers/ata/ahci.c | 14 +++++++++++--- 1 file changed, 11 insertions(+), 3 deletions(-) diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c index 5f039f191067..ef4b647b3ed2 100644 --- a/drivers/ata/ahci.c +++ b/drivers/ata/ahci.c @@ -60,6 +60,7 @@ enum board_ids { /* board IDs by feature in alphabetical order */ board_ahci, board_ahci_ign_iferr, + board_ahci_nomsi, board_ahci_noncq, board_ahci_nosntf, board_ahci_yes_fbs, @@ -121,6 +122,13 @@ static const struct ata_port_info ahci_port_info[] = { .udma_mask = ATA_UDMA6, .port_ops = &ahci_ops, }, + [board_ahci_nomsi] = { + AHCI_HFLAGS (AHCI_HFLAG_NO_MSI), + .flags = AHCI_FLAG_COMMON, + .pio_mask = ATA_PIO4, + .udma_mask = ATA_UDMA6, + .port_ops = &ahci_ops, + }, [board_ahci_noncq] = { AHCI_HFLAGS (AHCI_HFLAG_NO_NCQ), .flags = AHCI_FLAG_COMMON, @@ -475,10 +483,10 @@ static const struct pci_device_id ahci_pci_tbl[] = { { PCI_VDEVICE(ASMEDIA, 0x0612), board_ahci }, /* ASM1062 */ /* - * Samsung SSDs found on some macbooks. NCQ times out. - * https://bugzilla.kernel.org/show_bug.cgi?id=60731 + * Samsung SSDs found on some macbooks. NCQ times out if MSI is + * enabled. https://bugzilla.kernel.org/show_bug.cgi?id=60731 */ - { PCI_VDEVICE(SAMSUNG, 0x1600), board_ahci_noncq }, + { PCI_VDEVICE(SAMSUNG, 0x1600), board_ahci_nomsi }, /* Enmotus */ { PCI_DEVICE(0x1c44, 0x8000), board_ahci }, From 690000b930456a98663567d35dd5c54b688d1e3f Mon Sep 17 00:00:00 2001 From: James Ralston Date: Mon, 13 Oct 2014 15:16:38 -0700 Subject: [PATCH 025/371] ahci: Add Device IDs for Intel Sunrise Point PCH This patch adds the AHCI-mode SATA Device IDs for the Intel Sunrise Point PCH. Signed-off-by: James Ralston Signed-off-by: Tejun Heo Cc: stable@vger.kernel.org --- drivers/ata/ahci.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c index ef4b647b3ed2..89c081134112 100644 --- a/drivers/ata/ahci.c +++ b/drivers/ata/ahci.c @@ -321,6 +321,11 @@ static const struct pci_device_id ahci_pci_tbl[] = { { PCI_VDEVICE(INTEL, 0x8c87), board_ahci }, /* 9 Series RAID */ { PCI_VDEVICE(INTEL, 0x8c8e), board_ahci }, /* 9 Series RAID */ { PCI_VDEVICE(INTEL, 0x8c8f), board_ahci }, /* 9 Series RAID */ + { PCI_VDEVICE(INTEL, 0xa103), board_ahci }, /* Sunrise Point-H AHCI */ + { PCI_VDEVICE(INTEL, 0xa103), board_ahci }, /* Sunrise Point-H RAID */ + { PCI_VDEVICE(INTEL, 0xa105), board_ahci }, /* Sunrise Point-H RAID */ + { PCI_VDEVICE(INTEL, 0xa107), board_ahci }, /* Sunrise Point-H RAID */ + { PCI_VDEVICE(INTEL, 0xa10f), board_ahci }, /* Sunrise Point-H RAID */ /* JMicron 360/1/3/5/6, match class to avoid IDE function */ { PCI_VENDOR_ID_JMICRON, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, From 0eaf437aa14949d2230aeab7364f4ab47901304a Mon Sep 17 00:00:00 2001 From: Krzysztof Kozlowski Date: Wed, 15 Oct 2014 16:25:09 +0200 Subject: [PATCH 026/371] power: bq2415x_charger: Properly handle ENODEV from power_supply_get_by_phandle The power_supply_get_by_phandle() on error returns ENODEV or NULL. The driver later expects obtained pointer to power supply to be valid or NULL. If it is not NULL then it dereferences it in bq2415x_notifier_call() which would lead to dereferencing ENODEV-value pointer. Properly handle the power_supply_get_by_phandle() error case by replacing error value with NULL. This indicates that usb charger detection won't be used. Fix also memory leak of 'name' if power_supply_get_by_phandle() fails with NULL and probe should defer. Signed-off-by: Krzysztof Kozlowski Fixes: faffd234cf85 ("bq2415x_charger: Add DT support") Cc: [small fix regarding the missing ti,usb-charger-detection info message] Signed-off-by: Sebastian Reichel --- drivers/power/bq2415x_charger.c | 11 +++++++++-- 1 file changed, 9 insertions(+), 2 deletions(-) diff --git a/drivers/power/bq2415x_charger.c b/drivers/power/bq2415x_charger.c index e384844a1ae1..260795c6901a 100644 --- a/drivers/power/bq2415x_charger.c +++ b/drivers/power/bq2415x_charger.c @@ -1579,8 +1579,15 @@ static int bq2415x_probe(struct i2c_client *client, if (np) { bq->notify_psy = power_supply_get_by_phandle(np, "ti,usb-charger-detection"); - if (!bq->notify_psy) - return -EPROBE_DEFER; + if (IS_ERR(bq->notify_psy)) { + dev_info(&client->dev, + "no 'ti,usb-charger-detection' property (err=%ld)\n", + PTR_ERR(bq->notify_psy)); + bq->notify_psy = NULL; + } else if (!bq->notify_psy) { + ret = -EPROBE_DEFER; + goto error_2; + } } else if (pdata->notify_device) bq->notify_psy = power_supply_get_by_name(pdata->notify_device); From 21e863b233553998737e1b506c823a00bf012e00 Mon Sep 17 00:00:00 2001 From: Krzysztof Kozlowski Date: Wed, 15 Oct 2014 16:25:10 +0200 Subject: [PATCH 027/371] power: bq2415x_charger: Fix memory leak on DTS parsing error Memory allocated for 'name' was leaking if required binding properties were not present. The memory for 'name' was allocated early at probe with kasprintf(). It was freed in error paths executed before and after parsing DTS but not in that error path. Fix the error path for parsing device tree properties. Signed-off-by: Krzysztof Kozlowski Fixes: faffd234cf85 ("bq2415x_charger: Add DT support") Cc: Signed-off-by: Sebastian Reichel --- drivers/power/bq2415x_charger.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) diff --git a/drivers/power/bq2415x_charger.c b/drivers/power/bq2415x_charger.c index 260795c6901a..1f49986fc605 100644 --- a/drivers/power/bq2415x_charger.c +++ b/drivers/power/bq2415x_charger.c @@ -1609,27 +1609,27 @@ static int bq2415x_probe(struct i2c_client *client, ret = of_property_read_u32(np, "ti,current-limit", &bq->init_data.current_limit); if (ret) - return ret; + goto error_2; ret = of_property_read_u32(np, "ti,weak-battery-voltage", &bq->init_data.weak_battery_voltage); if (ret) - return ret; + goto error_2; ret = of_property_read_u32(np, "ti,battery-regulation-voltage", &bq->init_data.battery_regulation_voltage); if (ret) - return ret; + goto error_2; ret = of_property_read_u32(np, "ti,charge-current", &bq->init_data.charge_current); if (ret) - return ret; + goto error_2; ret = of_property_read_u32(np, "ti,termination-current", &bq->init_data.termination_current); if (ret) - return ret; + goto error_2; ret = of_property_read_u32(np, "ti,resistor-sense", &bq->init_data.resistor_sense); if (ret) - return ret; + goto error_2; } else { memcpy(&bq->init_data, pdata, sizeof(bq->init_data)); } From a69d82b9bdf1e53e94423048e8bda8c5f5a3dd4e Mon Sep 17 00:00:00 2001 From: Krzysztof Kozlowski Date: Tue, 7 Oct 2014 17:47:36 +0200 Subject: [PATCH 028/371] power_supply: Add no_thermal property to prevent recursive get_temp calls Add a 'no_thermal' property to the power supply class. If true then thermal zone won't be created for this power supply in power_supply_register(). Power supply drivers may want to set it if they support POWER_SUPPLY_PROP_TEMP and they are forwarding this get property call to other thermal zone. If they won't set it lockdep may report false positive deadlock for thermal zone's mutex because of nested calls to thermal_zone_get_temp(). First is the call to thermal_zone_get_temp() of the driver's thermal zone. Thermal core gets POWER_SUPPLY_PROP_TEMP property from this driver. The driver then calls other thermal zone thermal_zone_get_temp() and returns result. Example of such driver is charger manager. Signed-off-by: Krzysztof Kozlowski Signed-off-by: Sebastian Reichel --- drivers/power/power_supply_core.c | 3 +++ include/linux/power_supply.h | 6 ++++++ 2 files changed, 9 insertions(+) diff --git a/drivers/power/power_supply_core.c b/drivers/power/power_supply_core.c index 6cb7fe5c022d..694e8cddd5c1 100644 --- a/drivers/power/power_supply_core.c +++ b/drivers/power/power_supply_core.c @@ -417,6 +417,9 @@ static int psy_register_thermal(struct power_supply *psy) { int i; + if (psy->no_thermal) + return 0; + /* Register battery zone device psy reports temperature */ for (i = 0; i < psy->num_properties; i++) { if (psy->properties[i] == POWER_SUPPLY_PROP_TEMP) { diff --git a/include/linux/power_supply.h b/include/linux/power_supply.h index 3ed049673022..096dbced02ac 100644 --- a/include/linux/power_supply.h +++ b/include/linux/power_supply.h @@ -200,6 +200,12 @@ struct power_supply { void (*external_power_changed)(struct power_supply *psy); void (*set_charged)(struct power_supply *psy); + /* + * Set if thermal zone should not be created for this power supply. + * For example for virtual supplies forwarding calls to actual + * sensors or other supplies. + */ + bool no_thermal; /* For APM emulation, think legacy userspace. */ int use_for_apm; From ba9c91825d4a3bb49532d4a59c72e98b529b7eff Mon Sep 17 00:00:00 2001 From: Krzysztof Kozlowski Date: Tue, 7 Oct 2014 17:47:37 +0200 Subject: [PATCH 029/371] power: charger-manager: Avoid recursive thermal get_temp call The charger manager supports POWER_SUPPLY_PROP_TEMP property and acts as a thermal zone if any of these conditions match: 1. Fuel gauge used by charger manager supports POWER_SUPPLY_PROP_TEMP. 2. 'cm-thermal-zone' property is present in DTS (then it will supersede the fuel gauge temperature property). However in case 1 (fuel gauge reports temperature and 'cm-thermal-zone' is not set) the charger manager forwards its get_temp calls to fuel gauge thermal zone. This leads to reporting by lockdep a false positive deadlock for thermal zone's mutex because of nested calls to thermal_zone_get_temp(). This is false positive because these are different mutexes: one for charger manager thermal zone and second for fuel gauge thermal zone. Get rid of false lockdep alert and recursive call by setting 'no_thermal' property for this power supply class. The thermal zone for charger manager won't be created (user space does not use it anyway). The lockdep report: [ 2.540339] charger-manager charger-manager@0: Ignoring full-battery voltage threshold as it is not supplied [ 2.540351] charger-manager charger-manager@0: Ignoring full-battery full capacity threshold as it is not supplied [ 2.546296] [ 2.546302] ============================================= [ 2.546305] [ INFO: possible recursive locking detected ] [ 2.546312] 3.17.0-rc6-next-20140926-00012-gbb13895e46af-dirty #39 Not tainted [ 2.546316] --------------------------------------------- [ 2.546321] swapper/0/1 is trying to acquire lock: [ 2.546348] (&tz->lock){+.+...}, at: [] thermal_zone_get_temp+0x38/0x68 [ 2.546352] [ 2.546352] but task is already holding lock: [ 2.546369] (&tz->lock){+.+...}, at: [] thermal_zone_get_temp+0x38/0x68 [ 2.546373] [ 2.546373] other info that might help us debug this: [ 2.546376] Possible unsafe locking scenario: [ 2.546376] [ 2.546378] CPU0 [ 2.546380] ---- [ 2.546386] lock(&tz->lock); [ 2.546392] lock(&tz->lock); [ 2.546394] [ 2.546394] *** DEADLOCK *** [ 2.546394] [ 2.546397] May be due to missing lock nesting notation [ 2.546397] [ 2.546401] 2 locks held by swapper/0/1: [ 2.546430] #0: (&dev->mutex){......}, at: [] __driver_attach+0x58/0x98 [ 2.546448] #1: (&tz->lock){+.+...}, at: [] thermal_zone_get_temp+0x38/0x68 [ 2.546451] [ 2.546451] stack backtrace: [ 2.546460] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 3.17.0-rc6-next-20140926-00012-gbb13895e46af-dirty #39 [ 2.546497] [] (unwind_backtrace) from [] (show_stack+0x10/0x14) [ 2.546526] [] (show_stack) from [] (dump_stack+0x70/0xbc) [ 2.546554] [] (dump_stack) from [] (validate_chain.isra.24+0x718/0x890) [ 2.546569] [] (validate_chain.isra.24) from [] (__lock_acquire+0x498/0xa78) [ 2.546581] [] (__lock_acquire) from [] (lock_acquire+0x78/0xb8) [ 2.546594] [] (lock_acquire) from [] (mutex_lock_nested+0x64/0x458) [ 2.546605] [] (mutex_lock_nested) from [] (thermal_zone_get_temp+0x38/0x68) [ 2.546634] [] (thermal_zone_get_temp) from [] (charger_get_property+0x10c/0x348) [ 2.546649] [] (charger_get_property) from [] (power_supply_read_temp+0x28/0x58) [ 2.546662] [] (power_supply_read_temp) from [] (thermal_zone_get_temp+0x4c/0x68) [ 2.546676] [] (thermal_zone_get_temp) from [] (thermal_zone_device_update+0x24/0x9c) [ 2.546687] [] (thermal_zone_device_update) from [] (thermal_zone_device_register+0x424/0x550) [ 2.546701] [] (thermal_zone_device_register) from [] (__power_supply_register+0x2a4/0x348) [ 2.546714] [] (__power_supply_register) from [] (charger_manager_probe+0x600/0xe5c) [ 2.546727] [] (charger_manager_probe) from [] (platform_drv_probe+0x48/0xa4) [ 2.546746] [] (platform_drv_probe) from [] (driver_probe_device+0x10c/0x224) [ 2.546760] [] (driver_probe_device) from [] (__driver_attach+0x94/0x98) [ 2.546772] [] (__driver_attach) from [] (bus_for_each_dev+0x54/0x88) [ 2.546784] [] (bus_for_each_dev) from [] (bus_add_driver+0xd4/0x1d0) [ 2.546797] [] (bus_add_driver) from [] (driver_register+0x78/0xf4) [ 2.546809] [] (driver_register) from [] (do_one_initcall+0x80/0x1d4) [ 2.546829] [] (do_one_initcall) from [] (kernel_init_freeable+0x10c/0x1d8) [ 2.546847] [] (kernel_init_freeable) from [] (kernel_init+0x8/0xec) [ 2.546863] [] (kernel_init) from [] (ret_from_fork+0x14/0x2c) [ 2.551396] charger-manager charger-manager@0: 'chg-reg' regulator's externally_control is 0 Signed-off-by: Krzysztof Kozlowski Signed-off-by: Sebastian Reichel --- drivers/power/charger-manager.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/power/charger-manager.c b/drivers/power/charger-manager.c index 7098a1ce2d3c..7a1177ea238d 100644 --- a/drivers/power/charger-manager.c +++ b/drivers/power/charger-manager.c @@ -970,6 +970,7 @@ static struct power_supply psy_default = { .properties = default_charger_props, .num_properties = ARRAY_SIZE(default_charger_props), .get_property = charger_get_property, + .no_thermal = true, }; /** From bdbe81445407644492b9ac69a24d35e3202d773b Mon Sep 17 00:00:00 2001 From: Krzysztof Kozlowski Date: Mon, 13 Oct 2014 15:34:30 +0200 Subject: [PATCH 030/371] power: charger-manager: Fix accessing invalidated power supply after fuel gauge unbind The charger manager obtained reference to fuel gauge power supply in probe with power_supply_get_by_name() for later usage. However if fuel gauge driver was removed and re-added then this reference would point to old power supply (from driver which was removed). This lead to accessing old (and probably invalid) memory which could be observed with: $ echo "12-0036" > /sys/bus/i2c/drivers/max17042/unbind $ echo "12-0036" > /sys/bus/i2c/drivers/max17042/bind $ cat /sys/devices/virtual/power_supply/battery/capacity [ 240.480084] INFO: task cat:1393 blocked for more than 120 seconds. [ 240.484799] Not tainted 3.17.0-next-20141007-00028-ge60b6dd79570 #203 [ 240.491782] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 240.499589] cat D c0469530 0 1393 1 0x00000000 [ 240.505947] [] (__schedule) from [] (schedule_preempt_disabled+0x14/0x20) [ 240.514449] [] (schedule_preempt_disabled) from [] (mutex_lock_nested+0x1bc/0x458) [ 240.523736] [] (mutex_lock_nested) from [] (regmap_read+0x30/0x60) [ 240.531647] [] (regmap_read) from [] (max17042_get_property+0x2e8/0x350) [ 240.540055] [] (max17042_get_property) from [] (charger_get_property+0x264/0x348) [ 240.549252] [] (charger_get_property) from [] (power_supply_show_property+0x48/0x1e0) [ 240.558808] [] (power_supply_show_property) from [] (dev_attr_show+0x1c/0x48) [ 240.567664] [] (dev_attr_show) from [] (sysfs_kf_seq_show+0x84/0x104) [ 240.575814] [] (sysfs_kf_seq_show) from [] (kernfs_seq_show+0x24/0x28) [ 240.584061] [] (kernfs_seq_show) from [] (seq_read+0x1b0/0x484) [ 240.591702] [] (seq_read) from [] (vfs_read+0x88/0x144) [ 240.598640] [] (vfs_read) from [] (SyS_read+0x40/0x8c) [ 240.605507] [] (SyS_read) from [] (ret_fast_syscall+0x0/0x48) [ 240.612952] 4 locks held by cat/1393: [ 240.616589] #0: (&p->lock){+.+.+.}, at: [] seq_read+0x30/0x484 [ 240.623414] #1: (&of->mutex){+.+.+.}, at: [] kernfs_seq_start+0x1c/0x8c [ 240.631086] #2: (s_active#31){++++.+}, at: [] kernfs_seq_start+0x24/0x8c [ 240.638777] #3: (&map->mutex){+.+...}, at: [] regmap_read+0x30/0x60 The charger-manager should get reference to fuel gauge power supply on each use of get_property callback. The thermal zone 'tzd' field of power supply should not be used because of the same reason. Additionally this change solves also the issue with nested thermal_zone_get_temp() calls and related false lockdep positive for deadlock for thermal zone's mutex [1]. When fuel gauge is used as source of temperature then the charger manager forwards its get_temp calls to fuel gauge thermal zone. So actually different mutexes are used (one for charger manager thermal zone and second for fuel gauge thermal zone) but for lockdep this is one class of mutex. The recursion is removed by retrieving temperature through power supply's get_property(). In case external thermal zone is used ('cm-thermal-zone' property is present in DTS) the recursion does not exist. Charger manager simply exports POWER_SUPPLY_PROP_TEMP_AMBIENT property (instead of POWER_SUPPLY_PROP_TEMP) thus no thermal zone is created for this power supply. [1] https://lkml.org/lkml/2014/10/6/309 Signed-off-by: Krzysztof Kozlowski Cc: Fixes: 3bb3dbbd56ea ("power_supply: Add initial Charger-Manager driver") Signed-off-by: Sebastian Reichel --- drivers/power/charger-manager.c | 99 +++++++++++++++++++-------- include/linux/power/charger-manager.h | 1 - 2 files changed, 71 insertions(+), 29 deletions(-) diff --git a/drivers/power/charger-manager.c b/drivers/power/charger-manager.c index 7a1177ea238d..7ae8cb70204a 100644 --- a/drivers/power/charger-manager.c +++ b/drivers/power/charger-manager.c @@ -97,6 +97,7 @@ static struct charger_global_desc *g_desc; /* init with setup_charger_manager */ static bool is_batt_present(struct charger_manager *cm) { union power_supply_propval val; + struct power_supply *psy; bool present = false; int i, ret; @@ -107,7 +108,11 @@ static bool is_batt_present(struct charger_manager *cm) case CM_NO_BATTERY: break; case CM_FUEL_GAUGE: - ret = cm->fuel_gauge->get_property(cm->fuel_gauge, + psy = power_supply_get_by_name(cm->desc->psy_fuel_gauge); + if (!psy) + break; + + ret = psy->get_property(psy, POWER_SUPPLY_PROP_PRESENT, &val); if (ret == 0 && val.intval) present = true; @@ -167,12 +172,14 @@ static bool is_ext_pwr_online(struct charger_manager *cm) static int get_batt_uV(struct charger_manager *cm, int *uV) { union power_supply_propval val; + struct power_supply *fuel_gauge; int ret; - if (!cm->fuel_gauge) + fuel_gauge = power_supply_get_by_name(cm->desc->psy_fuel_gauge); + if (!fuel_gauge) return -ENODEV; - ret = cm->fuel_gauge->get_property(cm->fuel_gauge, + ret = fuel_gauge->get_property(fuel_gauge, POWER_SUPPLY_PROP_VOLTAGE_NOW, &val); if (ret) return ret; @@ -248,6 +255,7 @@ static bool is_full_charged(struct charger_manager *cm) { struct charger_desc *desc = cm->desc; union power_supply_propval val; + struct power_supply *fuel_gauge; int ret = 0; int uV; @@ -255,11 +263,15 @@ static bool is_full_charged(struct charger_manager *cm) if (!is_batt_present(cm)) return false; - if (cm->fuel_gauge && desc->fullbatt_full_capacity > 0) { + fuel_gauge = power_supply_get_by_name(cm->desc->psy_fuel_gauge); + if (!fuel_gauge) + return false; + + if (desc->fullbatt_full_capacity > 0) { val.intval = 0; /* Not full if capacity of fuel gauge isn't full */ - ret = cm->fuel_gauge->get_property(cm->fuel_gauge, + ret = fuel_gauge->get_property(fuel_gauge, POWER_SUPPLY_PROP_CHARGE_FULL, &val); if (!ret && val.intval > desc->fullbatt_full_capacity) return true; @@ -273,10 +285,10 @@ static bool is_full_charged(struct charger_manager *cm) } /* Full, if the capacity is more than fullbatt_soc */ - if (cm->fuel_gauge && desc->fullbatt_soc > 0) { + if (desc->fullbatt_soc > 0) { val.intval = 0; - ret = cm->fuel_gauge->get_property(cm->fuel_gauge, + ret = fuel_gauge->get_property(fuel_gauge, POWER_SUPPLY_PROP_CAPACITY, &val); if (!ret && val.intval >= desc->fullbatt_soc) return true; @@ -551,6 +563,20 @@ static int check_charging_duration(struct charger_manager *cm) return ret; } +static int cm_get_battery_temperature_by_psy(struct charger_manager *cm, + int *temp) +{ + struct power_supply *fuel_gauge; + + fuel_gauge = power_supply_get_by_name(cm->desc->psy_fuel_gauge); + if (!fuel_gauge) + return -ENODEV; + + return fuel_gauge->get_property(fuel_gauge, + POWER_SUPPLY_PROP_TEMP, + (union power_supply_propval *)temp); +} + static int cm_get_battery_temperature(struct charger_manager *cm, int *temp) { @@ -560,15 +586,18 @@ static int cm_get_battery_temperature(struct charger_manager *cm, return -ENODEV; #ifdef CONFIG_THERMAL - ret = thermal_zone_get_temp(cm->tzd_batt, (unsigned long *)temp); - if (!ret) - /* Calibrate temperature unit */ - *temp /= 100; -#else - ret = cm->fuel_gauge->get_property(cm->fuel_gauge, - POWER_SUPPLY_PROP_TEMP, - (union power_supply_propval *)temp); + if (cm->tzd_batt) { + ret = thermal_zone_get_temp(cm->tzd_batt, (unsigned long *)temp); + if (!ret) + /* Calibrate temperature unit */ + *temp /= 100; + } else #endif + { + /* if-else continued from CONFIG_THERMAL */ + ret = cm_get_battery_temperature_by_psy(cm, temp); + } + return ret; } @@ -827,6 +856,7 @@ static int charger_get_property(struct power_supply *psy, struct charger_manager *cm = container_of(psy, struct charger_manager, charger_psy); struct charger_desc *desc = cm->desc; + struct power_supply *fuel_gauge; int ret = 0; int uV; @@ -857,14 +887,20 @@ static int charger_get_property(struct power_supply *psy, ret = get_batt_uV(cm, &val->intval); break; case POWER_SUPPLY_PROP_CURRENT_NOW: - ret = cm->fuel_gauge->get_property(cm->fuel_gauge, + fuel_gauge = power_supply_get_by_name(cm->desc->psy_fuel_gauge); + if (!fuel_gauge) { + ret = -ENODEV; + break; + } + ret = fuel_gauge->get_property(fuel_gauge, POWER_SUPPLY_PROP_CURRENT_NOW, val); break; case POWER_SUPPLY_PROP_TEMP: case POWER_SUPPLY_PROP_TEMP_AMBIENT: return cm_get_battery_temperature(cm, &val->intval); case POWER_SUPPLY_PROP_CAPACITY: - if (!cm->fuel_gauge) { + fuel_gauge = power_supply_get_by_name(cm->desc->psy_fuel_gauge); + if (!fuel_gauge) { ret = -ENODEV; break; } @@ -875,7 +911,7 @@ static int charger_get_property(struct power_supply *psy, break; } - ret = cm->fuel_gauge->get_property(cm->fuel_gauge, + ret = fuel_gauge->get_property(fuel_gauge, POWER_SUPPLY_PROP_CAPACITY, val); if (ret) break; @@ -924,7 +960,14 @@ static int charger_get_property(struct power_supply *psy, break; case POWER_SUPPLY_PROP_CHARGE_NOW: if (is_charging(cm)) { - ret = cm->fuel_gauge->get_property(cm->fuel_gauge, + fuel_gauge = power_supply_get_by_name( + cm->desc->psy_fuel_gauge); + if (!fuel_gauge) { + ret = -ENODEV; + break; + } + + ret = fuel_gauge->get_property(fuel_gauge, POWER_SUPPLY_PROP_CHARGE_NOW, val); if (ret) { @@ -1486,14 +1529,15 @@ err: return ret; } -static int cm_init_thermal_data(struct charger_manager *cm) +static int cm_init_thermal_data(struct charger_manager *cm, + struct power_supply *fuel_gauge) { struct charger_desc *desc = cm->desc; union power_supply_propval val; int ret; /* Verify whether fuel gauge provides battery temperature */ - ret = cm->fuel_gauge->get_property(cm->fuel_gauge, + ret = fuel_gauge->get_property(fuel_gauge, POWER_SUPPLY_PROP_TEMP, &val); if (!ret) { @@ -1503,8 +1547,6 @@ static int cm_init_thermal_data(struct charger_manager *cm) cm->desc->measure_battery_temp = true; } #ifdef CONFIG_THERMAL - cm->tzd_batt = cm->fuel_gauge->tzd; - if (ret && desc->thermal_zone) { cm->tzd_batt = thermal_zone_get_zone_by_name(desc->thermal_zone); @@ -1667,6 +1709,7 @@ static int charger_manager_probe(struct platform_device *pdev) int ret = 0, i = 0; int j = 0; union power_supply_propval val; + struct power_supply *fuel_gauge; if (g_desc && !rtc_dev && g_desc->rtc_name) { rtc_dev = rtc_class_open(g_desc->rtc_name); @@ -1745,8 +1788,8 @@ static int charger_manager_probe(struct platform_device *pdev) } } - cm->fuel_gauge = power_supply_get_by_name(desc->psy_fuel_gauge); - if (!cm->fuel_gauge) { + fuel_gauge = power_supply_get_by_name(desc->psy_fuel_gauge); + if (!fuel_gauge) { dev_err(&pdev->dev, "Cannot find power supply \"%s\"\n", desc->psy_fuel_gauge); return -ENODEV; @@ -1789,13 +1832,13 @@ static int charger_manager_probe(struct platform_device *pdev) cm->charger_psy.num_properties = psy_default.num_properties; /* Find which optional psy-properties are available */ - if (!cm->fuel_gauge->get_property(cm->fuel_gauge, + if (!fuel_gauge->get_property(fuel_gauge, POWER_SUPPLY_PROP_CHARGE_NOW, &val)) { cm->charger_psy.properties[cm->charger_psy.num_properties] = POWER_SUPPLY_PROP_CHARGE_NOW; cm->charger_psy.num_properties++; } - if (!cm->fuel_gauge->get_property(cm->fuel_gauge, + if (!fuel_gauge->get_property(fuel_gauge, POWER_SUPPLY_PROP_CURRENT_NOW, &val)) { cm->charger_psy.properties[cm->charger_psy.num_properties] = @@ -1803,7 +1846,7 @@ static int charger_manager_probe(struct platform_device *pdev) cm->charger_psy.num_properties++; } - ret = cm_init_thermal_data(cm); + ret = cm_init_thermal_data(cm, fuel_gauge); if (ret) { dev_err(&pdev->dev, "Failed to initialize thermal data\n"); cm->desc->measure_battery_temp = false; diff --git a/include/linux/power/charger-manager.h b/include/linux/power/charger-manager.h index 07e7945a1ff2..5d90d329e0ba 100644 --- a/include/linux/power/charger-manager.h +++ b/include/linux/power/charger-manager.h @@ -253,7 +253,6 @@ struct charger_manager { struct device *dev; struct charger_desc *desc; - struct power_supply *fuel_gauge; struct power_supply **charger_stat; #ifdef CONFIG_THERMAL From cdaf3e15385d3232b52287e50692506f8fd01a09 Mon Sep 17 00:00:00 2001 From: Krzysztof Kozlowski Date: Mon, 13 Oct 2014 15:34:31 +0200 Subject: [PATCH 031/371] power: charger-manager: Fix accessing invalidated power supply after charger unbind The charger manager obtained in probe references to power supplies for all chargers with power_supply_get_by_name() for later usage. However if such charger driver was removed then this reference would point to old power supply (from driver which was removed). This lead to accessing invalid memory which could be observed with: $ echo "max77693-charger" > /sys/bus/platform/drivers/max77693-charger/unbind $ grep . /sys/devices/virtual/power_supply/battery/charger.0/* $ grep . /sys/devices/virtual/power_supply/battery/* [ 15.339817] Unable to handle kernel paging request at virtual address 0001c12c [ 15.346187] pgd = edd08000 [ 15.348814] [0001c12c] *pgd=6dce2831, *pte=00000000, *ppte=00000000 [ 15.355075] Internal error: Oops: 80000007 [#1] PREEMPT SMP ARM [ 15.360967] Modules linked in: [ 15.364010] CPU: 2 PID: 1388 Comm: grep Not tainted 3.17.0-next-20141007-00027-ga95e761db1b0 #245 [ 15.372859] task: ee03ad00 ti: edcf6000 task.ti: edcf6000 [ 15.378241] PC is at 0x1c12c [ 15.381113] LR is at is_ext_pwr_online+0x30/0x6c [ 15.385706] pc : [<0001c12c>] lr : [] psr: a0000013 [ 15.385706] sp : edcf7e88 ip : 00000000 fp : 00000000 [ 15.397161] r10: eeb02c08 r9 : c04b1f84 r8 : eeb02c00 [ 15.402369] r7 : edc69a10 r6 : eea6ac10 r5 : eea6ac10 r4 : 00000004 [ 15.408878] r3 : 0001c12c r2 : edcf7e8c r1 : 00000004 r0 : ee914418 [ 15.415390] Flags: NzCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment user [ 15.422506] Control: 10c5387d Table: 6dd0804a DAC: 00000015 [ 15.428236] Process grep (pid: 1388, stack limit = 0xedcf6240) [ 15.434050] Stack: (0xedcf7e88 to 0xedcf8000) [ 15.438395] 7e80: ee03ad00 00000000 edcf7f80 eea6aca8 edcf7ec4 c033b7b0 [ 15.446554] 7ea0: 00000001 ee1cc3f0 00000004 c06e1e44 eebdc000 c06e1e44 eeb02c00 c0337144 [ 15.454713] 7ec0: ee2dac68 c005cffc ee1cc3c0 c06e1e44 00000fff 00001000 eebdc000 c0278ca8 [ 15.462872] 7ee0: c0278c8c ee1cc3c0 eeb7ce00 c014422c edcf7f20 00008000 ee1cc3c0 ee9a48c0 [ 15.471030] 7f00: 00000001 00000001 edcf7f80 c0142d94 c0142d70 c01060f4 00021000 ee1cc3f0 [ 15.479190] 7f20: 00000000 00000000 c06a2150 eebdc000 2e7ec000 ee9a48c0 00008000 00021000 [ 15.487349] 7f40: edcf7f80 00008000 edcf6000 00021000 00021000 c00e39a4 00000000 ee9a48c0 [ 15.495508] 7f60: 00004000 00000000 00000000 ee9a48c0 ee9a48c0 00008000 00021000 c00e3aa0 [ 15.503668] 7f80: 00000000 00000000 0001f2e0 0001f2e0 00021000 00001000 00000003 c000f364 [ 15.511826] 7fa0: 00000000 c000f1a0 0001f2e0 00021000 00000003 00021000 00008000 00000000 [ 15.519986] 7fc0: 0001f2e0 00021000 00001000 00000003 00000001 000205e8 00000000 00021000 [ 15.528145] 7fe0: 00008000 bebbe910 0000a7ad b6edc49c 60000010 00000003 aaaaaaaa aaaaaaaa [ 15.536320] [] (is_ext_pwr_online) from [] (charger_get_property+0x170/0x314) [ 15.545164] [] (charger_get_property) from [] (power_supply_show_property+0x48/0x20c) [ 15.554719] [] (power_supply_show_property) from [] (dev_attr_show+0x1c/0x48) [ 15.563577] [] (dev_attr_show) from [] (sysfs_kf_seq_show+0x84/0x104) [ 15.571725] [] (sysfs_kf_seq_show) from [] (kernfs_seq_show+0x24/0x28) [ 15.579973] [] (kernfs_seq_show) from [] (seq_read+0x1b0/0x484) [ 15.587614] [] (seq_read) from [] (vfs_read+0x88/0x144) [ 15.594552] [] (vfs_read) from [] (SyS_read+0x40/0x8c) [ 15.601417] [] (SyS_read) from [] (ret_fast_syscall+0x0/0x48) [ 15.608877] Code: bad PC value [ 15.611991] ---[ end trace a88fcc95208db283 ]--- The charger-manager should get reference to charger power supply on each use of get_property callback. Signed-off-by: Krzysztof Kozlowski Cc: Fixes: 3bb3dbbd56ea ("power_supply: Add initial Charger-Manager driver") Signed-off-by: Sebastian Reichel --- drivers/power/charger-manager.c | 64 ++++++++++++++++----------- include/linux/power/charger-manager.h | 2 - 2 files changed, 39 insertions(+), 27 deletions(-) diff --git a/drivers/power/charger-manager.c b/drivers/power/charger-manager.c index 7ae8cb70204a..ef8094a61f1e 100644 --- a/drivers/power/charger-manager.c +++ b/drivers/power/charger-manager.c @@ -118,10 +118,17 @@ static bool is_batt_present(struct charger_manager *cm) present = true; break; case CM_CHARGER_STAT: - for (i = 0; cm->charger_stat[i]; i++) { - ret = cm->charger_stat[i]->get_property( - cm->charger_stat[i], - POWER_SUPPLY_PROP_PRESENT, &val); + for (i = 0; cm->desc->psy_charger_stat[i]; i++) { + psy = power_supply_get_by_name( + cm->desc->psy_charger_stat[i]); + if (!psy) { + dev_err(cm->dev, "Cannot find power supply \"%s\"\n", + cm->desc->psy_charger_stat[i]); + continue; + } + + ret = psy->get_property(psy, POWER_SUPPLY_PROP_PRESENT, + &val); if (ret == 0 && val.intval) { present = true; break; @@ -144,14 +151,20 @@ static bool is_batt_present(struct charger_manager *cm) static bool is_ext_pwr_online(struct charger_manager *cm) { union power_supply_propval val; + struct power_supply *psy; bool online = false; int i, ret; /* If at least one of them has one, it's yes. */ - for (i = 0; cm->charger_stat[i]; i++) { - ret = cm->charger_stat[i]->get_property( - cm->charger_stat[i], - POWER_SUPPLY_PROP_ONLINE, &val); + for (i = 0; cm->desc->psy_charger_stat[i]; i++) { + psy = power_supply_get_by_name(cm->desc->psy_charger_stat[i]); + if (!psy) { + dev_err(cm->dev, "Cannot find power supply \"%s\"\n", + cm->desc->psy_charger_stat[i]); + continue; + } + + ret = psy->get_property(psy, POWER_SUPPLY_PROP_ONLINE, &val); if (ret == 0 && val.intval) { online = true; break; @@ -196,6 +209,7 @@ static bool is_charging(struct charger_manager *cm) { int i, ret; bool charging = false; + struct power_supply *psy; union power_supply_propval val; /* If there is no battery, it cannot be charged */ @@ -203,17 +217,22 @@ static bool is_charging(struct charger_manager *cm) return false; /* If at least one of the charger is charging, return yes */ - for (i = 0; cm->charger_stat[i]; i++) { + for (i = 0; cm->desc->psy_charger_stat[i]; i++) { /* 1. The charger sholuld not be DISABLED */ if (cm->emergency_stop) continue; if (!cm->charger_enabled) continue; + psy = power_supply_get_by_name(cm->desc->psy_charger_stat[i]); + if (!psy) { + dev_err(cm->dev, "Cannot find power supply \"%s\"\n", + cm->desc->psy_charger_stat[i]); + continue; + } + /* 2. The charger should be online (ext-power) */ - ret = cm->charger_stat[i]->get_property( - cm->charger_stat[i], - POWER_SUPPLY_PROP_ONLINE, &val); + ret = psy->get_property(psy, POWER_SUPPLY_PROP_ONLINE, &val); if (ret) { dev_warn(cm->dev, "Cannot read ONLINE value from %s\n", cm->desc->psy_charger_stat[i]); @@ -226,9 +245,7 @@ static bool is_charging(struct charger_manager *cm) * 3. The charger should not be FULL, DISCHARGING, * or NOT_CHARGING. */ - ret = cm->charger_stat[i]->get_property( - cm->charger_stat[i], - POWER_SUPPLY_PROP_STATUS, &val); + ret = psy->get_property(psy, POWER_SUPPLY_PROP_STATUS, &val); if (ret) { dev_warn(cm->dev, "Cannot read STATUS value from %s\n", cm->desc->psy_charger_stat[i]); @@ -1773,15 +1790,12 @@ static int charger_manager_probe(struct platform_device *pdev) while (desc->psy_charger_stat[i]) i++; - cm->charger_stat = devm_kzalloc(&pdev->dev, - sizeof(struct power_supply *) * i, GFP_KERNEL); - if (!cm->charger_stat) - return -ENOMEM; - + /* Check if charger's supplies are present at probe */ for (i = 0; desc->psy_charger_stat[i]; i++) { - cm->charger_stat[i] = power_supply_get_by_name( - desc->psy_charger_stat[i]); - if (!cm->charger_stat[i]) { + struct power_supply *psy; + + psy = power_supply_get_by_name(desc->psy_charger_stat[i]); + if (!psy) { dev_err(&pdev->dev, "Cannot find power supply \"%s\"\n", desc->psy_charger_stat[i]); return -ENODEV; @@ -2110,8 +2124,8 @@ static bool find_power_supply(struct charger_manager *cm, int i; bool found = false; - for (i = 0; cm->charger_stat[i]; i++) { - if (psy == cm->charger_stat[i]) { + for (i = 0; cm->desc->psy_charger_stat[i]; i++) { + if (!strcmp(psy->name, cm->desc->psy_charger_stat[i])) { found = true; break; } diff --git a/include/linux/power/charger-manager.h b/include/linux/power/charger-manager.h index 5d90d329e0ba..e97fc656a058 100644 --- a/include/linux/power/charger-manager.h +++ b/include/linux/power/charger-manager.h @@ -253,8 +253,6 @@ struct charger_manager { struct device *dev; struct charger_desc *desc; - struct power_supply **charger_stat; - #ifdef CONFIG_THERMAL struct thermal_zone_device *tzd_batt; #endif From e35b98849f2530bb77f8fe649b3eaa1489ff9d33 Mon Sep 17 00:00:00 2001 From: Koji Matsuoka Date: Tue, 28 Oct 2014 12:45:32 +0900 Subject: [PATCH 032/371] ata: sata_rcar: Add r8a7793 device support Signed-off-by: Koji Matsuoka Signed-off-by: Yoshihiro Kaneko Signed-off-by: Tejun Heo --- Documentation/devicetree/bindings/ata/sata_rcar.txt | 3 ++- drivers/ata/sata_rcar.c | 5 +++++ 2 files changed, 7 insertions(+), 1 deletion(-) diff --git a/Documentation/devicetree/bindings/ata/sata_rcar.txt b/Documentation/devicetree/bindings/ata/sata_rcar.txt index 7dd32d321a34..80ae87a0784b 100644 --- a/Documentation/devicetree/bindings/ata/sata_rcar.txt +++ b/Documentation/devicetree/bindings/ata/sata_rcar.txt @@ -5,7 +5,8 @@ Required properties: - "renesas,sata-r8a7779" for R-Car H1 - "renesas,sata-r8a7790-es1" for R-Car H2 ES1 - "renesas,sata-r8a7790" for R-Car H2 other than ES1 - - "renesas,sata-r8a7791" for R-Car M2 + - "renesas,sata-r8a7791" for R-Car M2-W + - "renesas,sata-r8a7793" for R-Car M2-N - reg : address and length of the SATA registers; - interrupts : must consist of one interrupt specifier. diff --git a/drivers/ata/sata_rcar.c b/drivers/ata/sata_rcar.c index 8732e42db3a9..ea1fbc1d4c5f 100644 --- a/drivers/ata/sata_rcar.c +++ b/drivers/ata/sata_rcar.c @@ -850,6 +850,10 @@ static struct of_device_id sata_rcar_match[] = { .compatible = "renesas,sata-r8a7791", .data = (void *)RCAR_GEN2_SATA }, + { + .compatible = "renesas,sata-r8a7793", + .data = (void *)RCAR_GEN2_SATA + }, { }, }; MODULE_DEVICE_TABLE(of, sata_rcar_match); @@ -860,6 +864,7 @@ static const struct platform_device_id sata_rcar_id_table[] = { { "sata-r8a7790", RCAR_GEN2_SATA }, { "sata-r8a7790-es1", RCAR_R8A7790_ES1_SATA }, { "sata-r8a7791", RCAR_GEN2_SATA }, + { "sata-r8a7793", RCAR_GEN2_SATA }, { }, }; MODULE_DEVICE_TABLE(platform, sata_rcar_id_table); From 6ed15ea67b5ebb13ececcfc6056d90a70ed96f7b Mon Sep 17 00:00:00 2001 From: Heiko Carstens Date: Mon, 27 Oct 2014 15:49:06 +0100 Subject: [PATCH 033/371] s390/ftrace: add ftrace_graph_is_dead() check Add an ftrace_graph_is_dead() check to prepare_ftrace_return() in order to detect an internal ftrace graph error. This allows to prevent further ftrace graph handling and hopefully keeps the kernel alive. This patch is the same like for all other architectures. For unkown reasons s390 was left out. Signed-off-by: Heiko Carstens Signed-off-by: Martin Schwidefsky --- arch/s390/kernel/ftrace.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/s390/kernel/ftrace.c b/arch/s390/kernel/ftrace.c index 51d14fe5eb9a..ca1cabb3a96c 100644 --- a/arch/s390/kernel/ftrace.c +++ b/arch/s390/kernel/ftrace.c @@ -121,6 +121,8 @@ unsigned long __kprobes prepare_ftrace_return(unsigned long parent, { struct ftrace_graph_ent trace; + if (unlikely(ftrace_graph_is_dead())) + goto out; if (unlikely(atomic_read(¤t->tracing_graph_pause))) goto out; ip = (ip & PSW_ADDR_INSN) - MCOUNT_INSN_SIZE; From 9599815de61db104ad21bc61f5e3544d2415c6ee Mon Sep 17 00:00:00 2001 From: Marek Szyprowski Date: Mon, 20 Oct 2014 12:45:32 +0200 Subject: [PATCH 034/371] usb: dwc2: gadget: fix enumeration issues Excessive debug messages might cause timing issues that prevent correct usb enumeration. This patch hides information about USB bus reset to let driver enumerate fast enough to avoid making host angry. This fixes endless enumeration and usb reset loop observed with some Linux hosts. Acked-by: Paul Zimmerman Signed-off-by: Marek Szyprowski Reviewed-by: Felipe Balbi Signed-off-by: Felipe Balbi --- drivers/usb/dwc2/gadget.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/usb/dwc2/gadget.c b/drivers/usb/dwc2/gadget.c index eee87098bb8b..8b5c079c7b7d 100644 --- a/drivers/usb/dwc2/gadget.c +++ b/drivers/usb/dwc2/gadget.c @@ -2327,7 +2327,7 @@ irq_retry: u32 usb_status = readl(hsotg->regs + GOTGCTL); - dev_info(hsotg->dev, "%s: USBRst\n", __func__); + dev_dbg(hsotg->dev, "%s: USBRst\n", __func__); dev_dbg(hsotg->dev, "GNPTXSTS=%08x\n", readl(hsotg->regs + GNPTXSTS)); From a6bbce54efa9145dbcf3029c885549f7ebc40a3b Mon Sep 17 00:00:00 2001 From: Dave Chinner Date: Wed, 29 Oct 2014 08:22:18 +1100 Subject: [PATCH 035/371] xfs: bulkstat doesn't release AGI buffer on error The recent refactoring of the bulkstat code left a small landmine in the code. If a inobt read fails, then the tree walk is aborted and returns without releasing the AGI buffer or freeing the cursor. This can lead to a subsequent bulkstat call hanging trying to grab the AGI buffer again. cc: Signed-off-by: Dave Chinner Reviewed-by: Brian Foster Reviewed-by: Eric Sandeen Signed-off-by: Dave Chinner --- fs/xfs/xfs_itable.c | 16 ++++++++++------ 1 file changed, 10 insertions(+), 6 deletions(-) diff --git a/fs/xfs/xfs_itable.c b/fs/xfs/xfs_itable.c index f1deb961a296..ef8ea0589780 100644 --- a/fs/xfs/xfs_itable.c +++ b/fs/xfs/xfs_itable.c @@ -427,7 +427,7 @@ xfs_bulkstat( error = xfs_bulkstat_grab_ichunk(cur, agino, &icount, &r); if (error) - break; + goto del_cursor; if (icount) { irbp->ir_startino = r.ir_startino; irbp->ir_freecount = r.ir_freecount; @@ -442,7 +442,7 @@ xfs_bulkstat( error = xfs_inobt_lookup(cur, 0, XFS_LOOKUP_GE, &tmp); } if (error) - break; + goto del_cursor; /* * Loop through inode btree records in this ag, @@ -454,7 +454,7 @@ xfs_bulkstat( error = xfs_inobt_get_rec(cur, &r, &i); if (error || i == 0) { end_of_ag = 1; - break; + goto del_cursor; } /* @@ -476,13 +476,17 @@ xfs_bulkstat( error = xfs_btree_increment(cur, 0, &tmp); cond_resched(); } + /* - * Drop the btree buffers and the agi buffer. - * We can't hold any of the locks these represent - * when calling iget. + * Drop the btree buffers and the agi buffer as we can't hold any + * of the locks these represent when calling iget. If there is a + * pending error, then we are done. */ +del_cursor: xfs_btree_del_cursor(cur, XFS_BTREE_NOERROR); xfs_buf_relse(agbp); + if (error) + break; /* * Now format all the good inodes into the user's buffer. */ From 30fa0530ff87f6379e046629adfa3f4872a2d353 Mon Sep 17 00:00:00 2001 From: Zubair Lutfullah Kakakhel Date: Tue, 28 Oct 2014 11:28:34 +0000 Subject: [PATCH 036/371] MIPS: CMA: Do not reserve memory if not required Even if CMA is disabled, the for_each_memblock macro expands to run reserve_bootmem once. Hence, reserve_bootmem attempts to reserve location 0 of size 0. Add a check to avoid that. Issue was highlighted during testing with EVA enabled. resrve_bootmem used to exit gracefully when passed arguments to reserve 0 size location at 0 without EVA. But with EVA enabled, macros would point to different addresses and the code would trigger a BUG. Signed-off-by: Zubair Lutfullah Kakakhel Tested-by: Markos Chandras Tested-by: Huacai Chen Cc: linux-mips@linux-mips.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/8231/ Signed-off-by: Ralf Baechle --- arch/mips/kernel/setup.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/arch/mips/kernel/setup.c b/arch/mips/kernel/setup.c index b3b8f0d9d4a7..d21ec57b6e95 100644 --- a/arch/mips/kernel/setup.c +++ b/arch/mips/kernel/setup.c @@ -683,7 +683,8 @@ static void __init arch_mem_init(char **cmdline_p) dma_contiguous_reserve(PFN_PHYS(max_low_pfn)); /* Tell bootmem about cma reserved memblock section */ for_each_memblock(reserved, reg) - reserve_bootmem(reg->base, reg->size, BOOTMEM_DEFAULT); + if (reg->size != 0) + reserve_bootmem(reg->base, reg->size, BOOTMEM_DEFAULT); } static void __init resource_init(void) From 7b358f0652dc09069ee19c4cda52fb20a1fa582a Mon Sep 17 00:00:00 2001 From: Emmanuel Grumbach Date: Thu, 23 Oct 2014 14:42:33 +0300 Subject: [PATCH 037/371] iwlwifi: mvm: initialize the cur_ucode upon boot mvm->cur_ucode wasn't set before we actually load the firmware. This caused issues when we boot in RFKILL since we get an RFKILL interrupt upon boot even before we load any firmware. This leads to issues since iwl_mvm_set_hw_rfkill_state (the RFKILL interrupts handler in mvm) relies on this variable. Fix this. Signed-off-by: Emmanuel Grumbach --- drivers/net/wireless/iwlwifi/mvm/ops.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/net/wireless/iwlwifi/mvm/ops.c b/drivers/net/wireless/iwlwifi/mvm/ops.c index 48cb25a93591..27fb0a1ef274 100644 --- a/drivers/net/wireless/iwlwifi/mvm/ops.c +++ b/drivers/net/wireless/iwlwifi/mvm/ops.c @@ -424,6 +424,7 @@ iwl_op_mode_mvm_start(struct iwl_trans *trans, const struct iwl_cfg *cfg, } mvm->sf_state = SF_UNINIT; mvm->low_latency_agg_frame_limit = 6; + mvm->cur_ucode = IWL_UCODE_INIT; mutex_init(&mvm->mutex); mutex_init(&mvm->d0i3_suspend_mutex); From 7de79a1d4992921c85b10077520385acc5b9a6e0 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Wed, 8 Oct 2014 23:08:13 +0100 Subject: [PATCH 038/371] regulator: of: Lower the severity of the error with no container Description of regulators should generally be optional so if there is no DT node for the regulators container then we shouldn't print an error message. Lower the severity of the message to debug level (it might help someone work out what went wrong) and while we're at it say what we were looking for. Reported-by: Guenter Roeck Signed-off-by: Mark Brown --- drivers/regulator/of_regulator.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/regulator/of_regulator.c b/drivers/regulator/of_regulator.c index 7a51814abdc5..5a1d4afa4776 100644 --- a/drivers/regulator/of_regulator.c +++ b/drivers/regulator/of_regulator.c @@ -211,7 +211,8 @@ struct regulator_init_data *regulator_of_get_init_data(struct device *dev, search = dev->of_node; if (!search) { - dev_err(dev, "Failed to find regulator container node\n"); + dev_dbg(dev, "Failed to find regulator container node '%s'\n", + desc->regulators_node); return NULL; } From 805dbe17d1c832ad341f14fae8cedf41b67ca6fa Mon Sep 17 00:00:00 2001 From: Junjie Mao Date: Tue, 28 Oct 2014 09:31:47 +0800 Subject: [PATCH 039/371] mac80211_hwsim: release driver when ieee80211_register_hw fails The driver is not released when ieee80211_register_hw fails in mac80211_hwsim_create_radio, leading to the access to the unregistered (and possibly freed) device in platform_driver_unregister: [ 0.447547] mac80211_hwsim: ieee80211_register_hw failed (-2) [ 0.448292] ------------[ cut here ]------------ [ 0.448854] WARNING: CPU: 0 PID: 1 at ../include/linux/kref.h:47 kobject_get+0x33/0x50() [ 0.449839] CPU: 0 PID: 1 Comm: swapper Not tainted 3.17.0-00001-gdd46990-dirty #2 [ 0.450813] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 0.451512] 00000000 00000000 78025e38 7967c6c6 78025e68 7905e09b 7988b480 00000000 [ 0.452579] 00000001 79887d62 0000002f 79170bb3 79170bb3 78397008 79ac9d74 00000001 [ 0.453614] 78025e78 7905e15d 00000009 00000000 78025e84 79170bb3 78397000 78025e8c [ 0.454632] Call Trace: [ 0.454921] [<7967c6c6>] dump_stack+0x16/0x18 [ 0.455453] [<7905e09b>] warn_slowpath_common+0x6b/0x90 [ 0.456067] [<79170bb3>] ? kobject_get+0x33/0x50 [ 0.456612] [<79170bb3>] ? kobject_get+0x33/0x50 [ 0.457155] [<7905e15d>] warn_slowpath_null+0x1d/0x20 [ 0.457748] [<79170bb3>] kobject_get+0x33/0x50 [ 0.458274] [<7925824f>] get_device+0xf/0x20 [ 0.458779] [<7925b5cd>] driver_detach+0x3d/0xa0 [ 0.459331] [<7925a3ff>] bus_remove_driver+0x8f/0xb0 [ 0.459927] [<7925bf80>] ? class_unregister+0x40/0x80 [ 0.460660] [<7925bad7>] driver_unregister+0x47/0x50 [ 0.461248] [<7925c033>] ? class_destroy+0x13/0x20 [ 0.461824] [<7925d07b>] platform_driver_unregister+0xb/0x10 [ 0.462507] [<79b51ba0>] init_mac80211_hwsim+0x3e8/0x3f9 [ 0.463161] [<79b30c58>] do_one_initcall+0x106/0x1a9 [ 0.463758] [<79b517b8>] ? if_spi_init_module+0xac/0xac [ 0.464393] [<79b517b8>] ? if_spi_init_module+0xac/0xac [ 0.465001] [<79071935>] ? parse_args+0x2f5/0x480 [ 0.465569] [<7906b41e>] ? __usermodehelper_set_disable_depth+0x3e/0x50 [ 0.466345] [<79b30dd9>] kernel_init_freeable+0xde/0x17d [ 0.466972] [<79b304d6>] ? do_early_param+0x7a/0x7a [ 0.467546] [<79677b1b>] kernel_init+0xb/0xe0 [ 0.468072] [<79075f42>] ? schedule_tail+0x12/0x40 [ 0.468658] [<79686580>] ret_from_kernel_thread+0x20/0x30 [ 0.469303] [<79677b10>] ? rest_init+0xc0/0xc0 [ 0.469829] ---[ end trace ad8ac403ff8aef5c ]--- [ 0.470509] ------------[ cut here ]------------ [ 0.471047] WARNING: CPU: 0 PID: 1 at ../kernel/locking/lockdep.c:3161 __lock_acquire.isra.22+0x7aa/0xb00() [ 0.472163] DEBUG_LOCKS_WARN_ON(id >= MAX_LOCKDEP_KEYS) [ 0.472774] CPU: 0 PID: 1 Comm: swapper Tainted: G W 3.17.0-00001-gdd46990-dirty #2 [ 0.473815] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 0.474492] 78025de0 78025de0 78025da0 7967c6c6 78025dd0 7905e09b 79888931 78025dfc [ 0.475515] 00000001 79888a93 00000c59 7907f33a 7907f33a 78028000 fffe9d09 00000000 [ 0.476519] 78025de8 7905e10e 00000009 78025de0 79888931 78025dfc 78025e24 7907f33a [ 0.477523] Call Trace: [ 0.477821] [<7967c6c6>] dump_stack+0x16/0x18 [ 0.478352] [<7905e09b>] warn_slowpath_common+0x6b/0x90 [ 0.478976] [<7907f33a>] ? __lock_acquire.isra.22+0x7aa/0xb00 [ 0.479658] [<7907f33a>] ? __lock_acquire.isra.22+0x7aa/0xb00 [ 0.480417] [<7905e10e>] warn_slowpath_fmt+0x2e/0x30 [ 0.480479] [<7907f33a>] __lock_acquire.isra.22+0x7aa/0xb00 [ 0.480479] [<79078aa5>] ? sched_clock_cpu+0xb5/0xf0 [ 0.480479] [<7907fd06>] lock_acquire+0x56/0x70 [ 0.480479] [<7925b5e8>] ? driver_detach+0x58/0xa0 [ 0.480479] [<79682d11>] mutex_lock_nested+0x61/0x2a0 [ 0.480479] [<7925b5e8>] ? driver_detach+0x58/0xa0 [ 0.480479] [<7925b5e8>] ? driver_detach+0x58/0xa0 [ 0.480479] [<7925b5e8>] driver_detach+0x58/0xa0 [ 0.480479] [<7925a3ff>] bus_remove_driver+0x8f/0xb0 [ 0.480479] [<7925bf80>] ? class_unregister+0x40/0x80 [ 0.480479] [<7925bad7>] driver_unregister+0x47/0x50 [ 0.480479] [<7925c033>] ? class_destroy+0x13/0x20 [ 0.480479] [<7925d07b>] platform_driver_unregister+0xb/0x10 [ 0.480479] [<79b51ba0>] init_mac80211_hwsim+0x3e8/0x3f9 [ 0.480479] [<79b30c58>] do_one_initcall+0x106/0x1a9 [ 0.480479] [<79b517b8>] ? if_spi_init_module+0xac/0xac [ 0.480479] [<79b517b8>] ? if_spi_init_module+0xac/0xac [ 0.480479] [<79071935>] ? parse_args+0x2f5/0x480 [ 0.480479] [<7906b41e>] ? __usermodehelper_set_disable_depth+0x3e/0x50 [ 0.480479] [<79b30dd9>] kernel_init_freeable+0xde/0x17d [ 0.480479] [<79b304d6>] ? do_early_param+0x7a/0x7a [ 0.480479] [<79677b1b>] kernel_init+0xb/0xe0 [ 0.480479] [<79075f42>] ? schedule_tail+0x12/0x40 [ 0.480479] [<79686580>] ret_from_kernel_thread+0x20/0x30 [ 0.480479] [<79677b10>] ? rest_init+0xc0/0xc0 [ 0.480479] ---[ end trace ad8ac403ff8aef5d ]--- [ 0.495478] BUG: unable to handle kernel paging request at 00200200 [ 0.496257] IP: [<79682de5>] mutex_lock_nested+0x135/0x2a0 [ 0.496923] *pde = 00000000 [ 0.497290] Oops: 0002 [#1] [ 0.497653] CPU: 0 PID: 1 Comm: swapper Tainted: G W 3.17.0-00001-gdd46990-dirty #2 [ 0.498659] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 0.499321] task: 78028000 ti: 78024000 task.ti: 78024000 [ 0.499955] EIP: 0060:[<79682de5>] EFLAGS: 00010097 CPU: 0 [ 0.500620] EIP is at mutex_lock_nested+0x135/0x2a0 [ 0.501145] EAX: 00200200 EBX: 78397434 ECX: 78397460 EDX: 78025e70 [ 0.501816] ESI: 00000246 EDI: 78028000 EBP: 78025e8c ESP: 78025e54 [ 0.502497] DS: 007b ES: 007b FS: 0000 GS: 0000 SS: 0068 [ 0.503076] CR0: 8005003b CR2: 00200200 CR3: 01b9d000 CR4: 00000690 [ 0.503773] Stack: [ 0.503998] 00000000 00000001 00000000 7925b5e8 78397460 7925b5e8 78397474 78397460 [ 0.504944] 00200200 11111111 78025e70 78397000 79ac9d74 00000001 78025ea0 7925b5e8 [ 0.505451] 79ac9d74 fffffffe 00000001 78025ebc 7925a3ff 7a251398 78025ec8 7925bf80 [ 0.505451] Call Trace: [ 0.505451] [<7925b5e8>] ? driver_detach+0x58/0xa0 [ 0.505451] [<7925b5e8>] ? driver_detach+0x58/0xa0 [ 0.505451] [<7925b5e8>] driver_detach+0x58/0xa0 [ 0.505451] [<7925a3ff>] bus_remove_driver+0x8f/0xb0 [ 0.505451] [<7925bf80>] ? class_unregister+0x40/0x80 [ 0.505451] [<7925bad7>] driver_unregister+0x47/0x50 [ 0.505451] [<7925c033>] ? class_destroy+0x13/0x20 [ 0.505451] [<7925d07b>] platform_driver_unregister+0xb/0x10 [ 0.505451] [<79b51ba0>] init_mac80211_hwsim+0x3e8/0x3f9 [ 0.505451] [<79b30c58>] do_one_initcall+0x106/0x1a9 [ 0.505451] [<79b517b8>] ? if_spi_init_module+0xac/0xac [ 0.505451] [<79b517b8>] ? if_spi_init_module+0xac/0xac [ 0.505451] [<79071935>] ? parse_args+0x2f5/0x480 [ 0.505451] [<7906b41e>] ? __usermodehelper_set_disable_depth+0x3e/0x50 [ 0.505451] [<79b30dd9>] kernel_init_freeable+0xde/0x17d [ 0.505451] [<79b304d6>] ? do_early_param+0x7a/0x7a [ 0.505451] [<79677b1b>] kernel_init+0xb/0xe0 [ 0.505451] [<79075f42>] ? schedule_tail+0x12/0x40 [ 0.505451] [<79686580>] ret_from_kernel_thread+0x20/0x30 [ 0.505451] [<79677b10>] ? rest_init+0xc0/0xc0 [ 0.505451] Code: 89 d8 e8 cf 9b 9f ff 8b 4f 04 8d 55 e4 89 d8 e8 72 9d 9f ff 8d 43 2c 89 c1 89 45 d8 8b 43 30 8d 55 e4 89 53 30 89 4d e4 89 45 e8 <89> 10 8b 55 dc 8b 45 e0 89 7d ec e8 db af 9f ff eb 11 90 31 c0 [ 0.505451] EIP: [<79682de5>] mutex_lock_nested+0x135/0x2a0 SS:ESP 0068:78025e54 [ 0.505451] CR2: 0000000000200200 [ 0.505451] ---[ end trace ad8ac403ff8aef5e ]--- [ 0.505451] Kernel panic - not syncing: Fatal exception Fixes: 9ea927748ced ("mac80211_hwsim: Register and bind to driver") Reported-by: Fengguang Wu Signed-off-by: Junjie Mao Signed-off-by: Johannes Berg --- drivers/net/wireless/mac80211_hwsim.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/net/wireless/mac80211_hwsim.c b/drivers/net/wireless/mac80211_hwsim.c index babbdc1ce741..c9ad4cf1adfb 100644 --- a/drivers/net/wireless/mac80211_hwsim.c +++ b/drivers/net/wireless/mac80211_hwsim.c @@ -1987,7 +1987,7 @@ static int mac80211_hwsim_create_radio(int channels, const char *reg_alpha2, if (err != 0) { printk(KERN_DEBUG "mac80211_hwsim: device_bind_driver failed (%d)\n", err); - goto failed_hw; + goto failed_bind; } skb_queue_head_init(&data->pending); @@ -2183,6 +2183,8 @@ static int mac80211_hwsim_create_radio(int channels, const char *reg_alpha2, return idx; failed_hw: + device_release_driver(data->dev); +failed_bind: device_unregister(data->dev); failed_drvdata: ieee80211_free_hw(hw); From 10b68487869031828aede7313c2befc53d6d30ec Mon Sep 17 00:00:00 2001 From: Felix Fietkau Date: Mon, 27 Oct 2014 11:56:06 +0100 Subject: [PATCH 040/371] mac80211: flush keys for AP mode on ieee80211_do_stop Userspace can add keys to an AP mode interface before start_ap has been called. If there have been no calls to start_ap/stop_ap in the mean time, the keys will still be around when the interface is brought down. Signed-off-by: Felix Fietkau [adjust comments, fix AP_VLAN case] Signed-off-by: Johannes Berg --- net/mac80211/iface.c | 11 ++++++----- 1 file changed, 6 insertions(+), 5 deletions(-) diff --git a/net/mac80211/iface.c b/net/mac80211/iface.c index af237223a8cd..3b9e2b7b3f30 100644 --- a/net/mac80211/iface.c +++ b/net/mac80211/iface.c @@ -898,6 +898,8 @@ static void ieee80211_do_stop(struct ieee80211_sub_if_data *sdata, list_del(&sdata->u.vlan.list); mutex_unlock(&local->mtx); RCU_INIT_POINTER(sdata->vif.chanctx_conf, NULL); + /* see comment in the default case below */ + ieee80211_free_keys(sdata, true); /* no need to tell driver */ break; case NL80211_IFTYPE_MONITOR: @@ -923,17 +925,16 @@ static void ieee80211_do_stop(struct ieee80211_sub_if_data *sdata, /* * When we get here, the interface is marked down. * Free the remaining keys, if there are any - * (shouldn't be, except maybe in WDS mode?) + * (which can happen in AP mode if userspace sets + * keys before the interface is operating, and maybe + * also in WDS mode) * * Force the key freeing to always synchronize_net() * to wait for the RX path in case it is using this - * interface enqueuing frames * at this very time on + * interface enqueuing frames at this very time on * another CPU. */ ieee80211_free_keys(sdata, true); - - /* fall through */ - case NL80211_IFTYPE_AP: skb_queue_purge(&sdata->skb_queue); } From 84469a45a1bedec9918e94ab2f78c5dc0739e4a7 Mon Sep 17 00:00:00 2001 From: Luciano Coelho Date: Tue, 28 Oct 2014 13:33:04 +0200 Subject: [PATCH 041/371] mac80211: use secondary channel offset IE also beacons during CSA If we are switching from an HT40+ to an HT40- channel (or vice-versa), we need the secondary channel offset IE to specify what is the post-CSA offset to be used. This applies both to beacons and to probe responses. In ieee80211_parse_ch_switch_ie() we were ignoring this IE from beacons and using the *current* HT information IE instead. This was causing us to use the same offset as before the switch. Fix that by using the secondary channel offset IE also for beacons and don't ever use the pre-switch offset. Additionally, remove the "beacon" argument from ieee80211_parse_ch_switch_ie(), since it's not needed anymore. Cc: stable@vger.kernel.org Reported-by: Jouni Malinen Signed-off-by: Luciano Coelho Signed-off-by: Johannes Berg --- net/mac80211/ibss.c | 2 +- net/mac80211/ieee80211_i.h | 3 +-- net/mac80211/mesh.c | 2 +- net/mac80211/mlme.c | 2 +- net/mac80211/spectmgmt.c | 18 ++++++------------ 5 files changed, 10 insertions(+), 17 deletions(-) diff --git a/net/mac80211/ibss.c b/net/mac80211/ibss.c index 56b53571c807..509bc157ce55 100644 --- a/net/mac80211/ibss.c +++ b/net/mac80211/ibss.c @@ -805,7 +805,7 @@ ieee80211_ibss_process_chanswitch(struct ieee80211_sub_if_data *sdata, memset(¶ms, 0, sizeof(params)); memset(&csa_ie, 0, sizeof(csa_ie)); - err = ieee80211_parse_ch_switch_ie(sdata, elems, beacon, + err = ieee80211_parse_ch_switch_ie(sdata, elems, ifibss->chandef.chan->band, sta_flags, ifibss->bssid, &csa_ie); /* can't switch to destination channel, fail */ diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h index c2aaec4dfcf0..8c68da30595d 100644 --- a/net/mac80211/ieee80211_i.h +++ b/net/mac80211/ieee80211_i.h @@ -1642,7 +1642,6 @@ void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata, * ieee80211_parse_ch_switch_ie - parses channel switch IEs * @sdata: the sdata of the interface which has received the frame * @elems: parsed 802.11 elements received with the frame - * @beacon: indicates if the frame was a beacon or probe response * @current_band: indicates the current band * @sta_flags: contains information about own capabilities and restrictions * to decide which channel switch announcements can be accepted. Only the @@ -1656,7 +1655,7 @@ void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata, * Return: 0 on success, <0 on error and >0 if there is nothing to parse. */ int ieee80211_parse_ch_switch_ie(struct ieee80211_sub_if_data *sdata, - struct ieee802_11_elems *elems, bool beacon, + struct ieee802_11_elems *elems, enum ieee80211_band current_band, u32 sta_flags, u8 *bssid, struct ieee80211_csa_ie *csa_ie); diff --git a/net/mac80211/mesh.c b/net/mac80211/mesh.c index e9f99c1e3fad..0c8b2a77d312 100644 --- a/net/mac80211/mesh.c +++ b/net/mac80211/mesh.c @@ -874,7 +874,7 @@ ieee80211_mesh_process_chnswitch(struct ieee80211_sub_if_data *sdata, memset(¶ms, 0, sizeof(params)); memset(&csa_ie, 0, sizeof(csa_ie)); - err = ieee80211_parse_ch_switch_ie(sdata, elems, beacon, band, + err = ieee80211_parse_ch_switch_ie(sdata, elems, band, sta_flags, sdata->vif.addr, &csa_ie); if (err < 0) diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c index 2de88704278b..08f51c6d0953 100644 --- a/net/mac80211/mlme.c +++ b/net/mac80211/mlme.c @@ -1072,7 +1072,7 @@ ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata, current_band = cbss->channel->band; memset(&csa_ie, 0, sizeof(csa_ie)); - res = ieee80211_parse_ch_switch_ie(sdata, elems, beacon, current_band, + res = ieee80211_parse_ch_switch_ie(sdata, elems, current_band, ifmgd->flags, ifmgd->associated->bssid, &csa_ie); if (res < 0) diff --git a/net/mac80211/spectmgmt.c b/net/mac80211/spectmgmt.c index 6ab009070084..efeba56c913b 100644 --- a/net/mac80211/spectmgmt.c +++ b/net/mac80211/spectmgmt.c @@ -22,7 +22,7 @@ #include "wme.h" int ieee80211_parse_ch_switch_ie(struct ieee80211_sub_if_data *sdata, - struct ieee802_11_elems *elems, bool beacon, + struct ieee802_11_elems *elems, enum ieee80211_band current_band, u32 sta_flags, u8 *bssid, struct ieee80211_csa_ie *csa_ie) @@ -91,19 +91,13 @@ int ieee80211_parse_ch_switch_ie(struct ieee80211_sub_if_data *sdata, return -EINVAL; } - if (!beacon && sec_chan_offs) { + if (sec_chan_offs) { secondary_channel_offset = sec_chan_offs->sec_chan_offs; - } else if (beacon && ht_oper) { - secondary_channel_offset = - ht_oper->ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET; } else if (!(sta_flags & IEEE80211_STA_DISABLE_HT)) { - /* If it's not a beacon, HT is enabled and the IE not present, - * it's 20 MHz, 802.11-2012 8.5.2.6: - * This element [the Secondary Channel Offset Element] is - * present when switching to a 40 MHz channel. It may be - * present when switching to a 20 MHz channel (in which - * case the secondary channel offset is set to SCN). - */ + /* If the secondary channel offset IE is not present, + * we can't know what's the post-CSA offset, so the + * best we can do is use 20MHz. + */ secondary_channel_offset = IEEE80211_HT_PARAM_CHA_SEC_NONE; } From ff1e417c7c239b7abfe70aa90460a77eaafc7f83 Mon Sep 17 00:00:00 2001 From: Luciano Coelho Date: Tue, 28 Oct 2014 13:33:05 +0200 Subject: [PATCH 042/371] mac80211: schedule the actual switch of the station before CSA count 0 Due to the time it takes to process the beacon that started the CSA process, we may be late for the switch if we try to reach exactly beacon 0. To avoid that, use count - 1 when calculating the switch time. Cc: stable@vger.kernel.org Reported-by: Jouni Malinen Signed-off-by: Luciano Coelho Signed-off-by: Johannes Berg --- net/mac80211/mlme.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c index 08f51c6d0953..93af0f1c9d99 100644 --- a/net/mac80211/mlme.c +++ b/net/mac80211/mlme.c @@ -1168,7 +1168,8 @@ ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata, ieee80211_queue_work(&local->hw, &ifmgd->chswitch_work); else mod_timer(&ifmgd->chswitch_timer, - TU_TO_EXP_TIME(csa_ie.count * cbss->beacon_interval)); + TU_TO_EXP_TIME((csa_ie.count - 1) * + cbss->beacon_interval)); } static bool From d20c4b08be822ab1c5d333297f38f1b532d3febc Mon Sep 17 00:00:00 2001 From: Heinz Mauelshagen Date: Wed, 29 Oct 2014 19:02:27 +0100 Subject: [PATCH 043/371] dm raid: fix inaccessible superblocks causing oops in configure_discard_support Commit 48cf06bc5f ("dm raid: add discard support for RAID levels 4, 5 and 6") did not properly handle missing metadata device(s). A failing read of the superblock causes the metadata and data devices to be removed from the dev array in struct raid_set, setting references to both devices to NULL. configure_discard_support() nonetheless tries to access the data dev unconditionally causing an oops. Signed-off-by: Heinz Mauelshagen Signed-off-by: Mike Snitzer --- drivers/md/dm-raid.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/md/dm-raid.c b/drivers/md/dm-raid.c index a7cb9dd5f135..07c0fa0fa284 100644 --- a/drivers/md/dm-raid.c +++ b/drivers/md/dm-raid.c @@ -1172,8 +1172,12 @@ static void configure_discard_support(struct dm_target *ti, struct raid_set *rs) raid456 = (rs->md.level == 4 || rs->md.level == 5 || rs->md.level == 6); for (i = 0; i < rs->md.raid_disks; i++) { - struct request_queue *q = bdev_get_queue(rs->dev[i].rdev.bdev); + struct request_queue *q; + if (!rs->dev[i].rdev.bdev) + continue; + + q = bdev_get_queue(rs->dev[i].rdev.bdev); if (!q || !blk_queue_discard(q)) return; From 7a19dee116c8fae7ba7a778043c245194289f5a2 Mon Sep 17 00:00:00 2001 From: Jan Kara Date: Thu, 30 Oct 2014 10:34:52 +1100 Subject: [PATCH 044/371] xfs: Check error during inode btree iteration in xfs_bulkstat() xfs_bulkstat() doesn't check error return from xfs_btree_increment(). In case of specific fs corruption that could result in xfs_bulkstat() entering an infinite loop because we would be looping over the same chunk over and over again. Fix the problem by checking the return value and terminating the loop properly. Coverity-id: 1231338 cc: Signed-off-by: Jan Kara Reviewed-by: Jie Liu Signed-off-by: Dave Chinner --- fs/xfs/xfs_itable.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/fs/xfs/xfs_itable.c b/fs/xfs/xfs_itable.c index ef8ea0589780..7765ff743e91 100644 --- a/fs/xfs/xfs_itable.c +++ b/fs/xfs/xfs_itable.c @@ -474,6 +474,10 @@ xfs_bulkstat( */ agino = r.ir_startino + XFS_INODES_PER_CHUNK; error = xfs_btree_increment(cur, 0, &tmp); + if (error) { + end_of_ag = 1; + goto del_cursor; + } cond_resched(); } From f55fefd1a5a339b1bd08c120b93312d6eb64a9fb Mon Sep 17 00:00:00 2001 From: Jan Kara Date: Thu, 30 Oct 2014 10:35:00 +1100 Subject: [PATCH 045/371] mm: Remove false WARN_ON from pagecache_isize_extended() The WARN_ON checking whether i_mutex is held in pagecache_isize_extended() was wrong because some filesystems (e.g. XFS) use different locks for serialization of truncates / writes. So just remove the check. Signed-off-by: Jan Kara Reviewed-by: Dave Chinner Signed-off-by: Dave Chinner --- mm/truncate.c | 1 - 1 file changed, 1 deletion(-) diff --git a/mm/truncate.c b/mm/truncate.c index 261eaf6e5a19..c646084e5eec 100644 --- a/mm/truncate.c +++ b/mm/truncate.c @@ -755,7 +755,6 @@ void pagecache_isize_extended(struct inode *inode, loff_t from, loff_t to) struct page *page; pgoff_t index; - WARN_ON(!mutex_is_locked(&inode->i_mutex)); WARN_ON(to > inode->i_size); if (from >= to || bsize == PAGE_CACHE_SIZE) From 5d11fb4b9a1d90983452c029b5e1377af78fda49 Mon Sep 17 00:00:00 2001 From: Brian Foster Date: Thu, 30 Oct 2014 10:35:11 +1100 Subject: [PATCH 046/371] xfs: rework zero range to prevent invalid i_size updates The zero range operation is analogous to fallocate with the exception of converting the range to zeroes. E.g., it attempts to allocate zeroed blocks over the range specified by the caller. The XFS implementation kills all delalloc blocks currently over the aligned range, converts the range to allocated zero blocks (unwritten extents) and handles the partial pages at the ends of the range by sending writes through the pagecache. The current implementation suffers from several problems associated with inode size. If the aligned range covers an extending I/O, said I/O is discarded and an inode size update from a previous write never makes it to disk. Further, if an unaligned zero range extends beyond eof, the page write induced for the partial end page can itself increase the inode size, even if the zero range request is not supposed to update i_size (via KEEP_SIZE, similar to an fallocate beyond EOF). The latter behavior not only incorrectly increases the inode size, but can lead to stray delalloc blocks on the inode. Typically, post-eof preallocation blocks are either truncated on release or inode eviction or explicitly written to by xfs_zero_eof() on natural file size extension. If the inode size increases due to zero range, however, associated blocks leak into the address space having never been converted or mapped to pagecache pages. A direct I/O to such an uncovered range cannot convert the extent via writeback and will BUG(). For example: $ xfs_io -fc "pwrite 0 128k" -c "fzero -k 1m 54321" ... $ xfs_io -d -c "pread 128k 128k" If the entire delalloc extent happens to not have page coverage whatsoever (e.g., delalloc conversion couldn't find a large enough free space extent), even a full file writeback won't convert what's left of the extent and we'll assert on inode eviction. Rework xfs_zero_file_space() to avoid buffered I/O for partial pages. Use the existing hole punch and prealloc mechanisms as primitives for zero range. This implementation is not efficient nor ideal as we writeback dirty data over the range and remove existing extents rather than convert to unwrittern. The former writeback, however, is currently the only mechanism available to ensure consistency between pagecache and extent state. Even a pagecache truncate/delalloc punch prior to hole punch has lead to inconsistencies due to racing with writeback. This provides a consistent, correct implementation of zero range that survives fsstress/fsx testing without assert failures. The implementation can be optimized from this point forward once the fundamental issue of pagecache and delalloc extent state consistency is addressed. Signed-off-by: Brian Foster Reviewed-by: Dave Chinner Signed-off-by: Dave Chinner --- fs/xfs/xfs_bmap_util.c | 72 ++++++++++++------------------------------ 1 file changed, 20 insertions(+), 52 deletions(-) diff --git a/fs/xfs/xfs_bmap_util.c b/fs/xfs/xfs_bmap_util.c index 92e8f99a5857..281002689d64 100644 --- a/fs/xfs/xfs_bmap_util.c +++ b/fs/xfs/xfs_bmap_util.c @@ -1338,7 +1338,10 @@ xfs_free_file_space( goto out; } - +/* + * Preallocate and zero a range of a file. This mechanism has the allocation + * semantics of fallocate and in addition converts data in the range to zeroes. + */ int xfs_zero_file_space( struct xfs_inode *ip, @@ -1346,65 +1349,30 @@ xfs_zero_file_space( xfs_off_t len) { struct xfs_mount *mp = ip->i_mount; - uint granularity; - xfs_off_t start_boundary; - xfs_off_t end_boundary; + uint blksize; int error; trace_xfs_zero_file_space(ip); - granularity = max_t(uint, 1 << mp->m_sb.sb_blocklog, PAGE_CACHE_SIZE); + blksize = 1 << mp->m_sb.sb_blocklog; /* - * Round the range of extents we are going to convert inwards. If the - * offset is aligned, then it doesn't get changed so we zero from the - * start of the block offset points to. + * Punch a hole and prealloc the range. We use hole punch rather than + * unwritten extent conversion for two reasons: + * + * 1.) Hole punch handles partial block zeroing for us. + * + * 2.) If prealloc returns ENOSPC, the file range is still zero-valued + * by virtue of the hole punch. */ - start_boundary = round_up(offset, granularity); - end_boundary = round_down(offset + len, granularity); - - ASSERT(start_boundary >= offset); - ASSERT(end_boundary <= offset + len); - - if (start_boundary < end_boundary - 1) { - /* - * Writeback the range to ensure any inode size updates due to - * appending writes make it to disk (otherwise we could just - * punch out the delalloc blocks). - */ - error = filemap_write_and_wait_range(VFS_I(ip)->i_mapping, - start_boundary, end_boundary - 1); - if (error) - goto out; - truncate_pagecache_range(VFS_I(ip), start_boundary, - end_boundary - 1); - - /* convert the blocks */ - error = xfs_alloc_file_space(ip, start_boundary, - end_boundary - start_boundary - 1, - XFS_BMAPI_PREALLOC | XFS_BMAPI_CONVERT); - if (error) - goto out; - - /* We've handled the interior of the range, now for the edges */ - if (start_boundary != offset) { - error = xfs_iozero(ip, offset, start_boundary - offset); - if (error) - goto out; - } - - if (end_boundary != offset + len) - error = xfs_iozero(ip, end_boundary, - offset + len - end_boundary); - - } else { - /* - * It's either a sub-granularity range or the range spanned lies - * partially across two adjacent blocks. - */ - error = xfs_iozero(ip, offset, len); - } + error = xfs_free_file_space(ip, offset, len); + if (error) + goto out; + error = xfs_alloc_file_space(ip, round_down(offset, blksize), + round_up(offset + len, blksize) - + round_down(offset, blksize), + XFS_BMAPI_PREALLOC); out: return error; From 222584647f2821c4d68421c1d07c89b375d501b2 Mon Sep 17 00:00:00 2001 From: Adam Lee Date: Mon, 27 Oct 2014 13:55:45 +0800 Subject: [PATCH 047/371] ACPI / blacklist: blacklist Win8 OSI for Dell Vostro 3546 The wireless hotkey of Dell Vostro 3546 does not work with Win8 OSI. Due to insufficient documentation for the driver implementation, blacklist it as a workaround. Signed-off-by: Adam Lee Signed-off-by: Rafael J. Wysocki --- drivers/acpi/blacklist.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/drivers/acpi/blacklist.c b/drivers/acpi/blacklist.c index ed122e17636e..7556e7c4a055 100644 --- a/drivers/acpi/blacklist.c +++ b/drivers/acpi/blacklist.c @@ -290,6 +290,14 @@ static struct dmi_system_id acpi_osi_dmi_table[] __initdata = { DMI_MATCH(DMI_PRODUCT_NAME, "Vostro 3446"), }, }, + { + .callback = dmi_disable_osi_win8, + .ident = "Dell Vostro 3546", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), + DMI_MATCH(DMI_PRODUCT_NAME, "Vostro 3546"), + }, + }, /* * BIOS invocation of _OSI(Linux) is almost always a BIOS bug. From 7c21539c45eace48e9f6fbdd59347d8416960af5 Mon Sep 17 00:00:00 2001 From: Lukas Bossard Date: Wed, 29 Oct 2014 18:31:07 +0100 Subject: [PATCH 048/371] ALSA: hda - Add ultra dock support for Thinkpad X240. Adding ultra doch support for Lenovo Thinkpad X240 (17aa:2214). [Actually replaced the entry with ALC292_FIXUP_TPT440_DOCK -- tiwai] Signed-off-by: Lukas Bossard Cc: Signed-off-by: Takashi Iwai --- sound/pci/hda/patch_realtek.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c index c9cf248ce8ec..9bc0301ddf4c 100644 --- a/sound/pci/hda/patch_realtek.c +++ b/sound/pci/hda/patch_realtek.c @@ -4804,7 +4804,7 @@ static const struct snd_pci_quirk alc269_fixup_tbl[] = { SND_PCI_QUIRK(0x17aa, 0x220e, "Thinkpad T440p", ALC292_FIXUP_TPT440_DOCK), SND_PCI_QUIRK(0x17aa, 0x2210, "Thinkpad T540p", ALC292_FIXUP_TPT440_DOCK), SND_PCI_QUIRK(0x17aa, 0x2212, "Thinkpad T440", ALC292_FIXUP_TPT440_DOCK), - SND_PCI_QUIRK(0x17aa, 0x2214, "Thinkpad", ALC269_FIXUP_LIMIT_INT_MIC_BOOST), + SND_PCI_QUIRK(0x17aa, 0x2214, "Thinkpad X240", ALC292_FIXUP_TPT440_DOCK), SND_PCI_QUIRK(0x17aa, 0x2215, "Thinkpad", ALC269_FIXUP_LIMIT_INT_MIC_BOOST), SND_PCI_QUIRK(0x17aa, 0x3978, "IdeaPad Y410P", ALC269_FIXUP_NO_SHUTUP), SND_PCI_QUIRK(0x17aa, 0x5013, "Thinkpad", ALC269_FIXUP_LIMIT_INT_MIC_BOOST), From 7a5255f17d913581cc8351582676e06d4613c20d Mon Sep 17 00:00:00 2001 From: David Henningsson Date: Thu, 30 Oct 2014 08:26:01 +0100 Subject: [PATCH 049/371] ALSA: hda - Set GPIO 4 low for a few HP machines These HP machines needs GPIO 4 low to enable the headphone amplifier. In addition, we still need to control LEDs via vref and GPIO. Cc: stable@vger.kernel.org BugLink: https://bugs.launchpad.net/bugs/1387128 Tested-by: TienFu Chen Signed-off-by: David Henningsson Signed-off-by: Takashi Iwai --- sound/pci/hda/patch_realtek.c | 33 +++++++++++++++++++++++++++++---- 1 file changed, 29 insertions(+), 4 deletions(-) diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c index 9bc0301ddf4c..d16d8ec95200 100644 --- a/sound/pci/hda/patch_realtek.c +++ b/sound/pci/hda/patch_realtek.c @@ -3350,6 +3350,27 @@ static void alc269_fixup_hp_gpio_mic1_led(struct hda_codec *codec, } } +static void alc280_fixup_hp_gpio4(struct hda_codec *codec, + const struct hda_fixup *fix, int action) +{ + /* Like hp_gpio_mic1_led, but also needs GPIO4 low to enable headphone amp */ + struct alc_spec *spec = codec->spec; + static const struct hda_verb gpio_init[] = { + { 0x01, AC_VERB_SET_GPIO_MASK, 0x18 }, + { 0x01, AC_VERB_SET_GPIO_DIRECTION, 0x18 }, + {} + }; + + if (action == HDA_FIXUP_ACT_PRE_PROBE) { + spec->gen.vmaster_mute.hook = alc269_fixup_hp_gpio_mute_hook; + spec->gen.cap_sync_hook = alc269_fixup_hp_cap_mic_mute_hook; + spec->gpio_led = 0; + spec->cap_mute_led_nid = 0x18; + snd_hda_add_verbs(codec, gpio_init); + codec->power_filter = led_power_filter; + } +} + static void alc269_fixup_hp_line1_mic1_led(struct hda_codec *codec, const struct hda_fixup *fix, int action) { @@ -4217,6 +4238,7 @@ enum { ALC283_FIXUP_BXBT2807_MIC, ALC255_FIXUP_DELL_WMI_MIC_MUTE_LED, ALC282_FIXUP_ASPIRE_V5_PINS, + ALC280_FIXUP_HP_GPIO4, }; static const struct hda_fixup alc269_fixups[] = { @@ -4680,7 +4702,10 @@ static const struct hda_fixup alc269_fixups[] = { { }, }, }, - + [ALC280_FIXUP_HP_GPIO4] = { + .type = HDA_FIXUP_FUNC, + .v.func = alc280_fixup_hp_gpio4, + }, }; static const struct snd_pci_quirk alc269_fixup_tbl[] = { @@ -4728,7 +4753,7 @@ static const struct snd_pci_quirk alc269_fixup_tbl[] = { SND_PCI_QUIRK(0x103c, 0x22cf, "HP", ALC269_FIXUP_HP_MUTE_LED_MIC1), SND_PCI_QUIRK(0x103c, 0x22dc, "HP", ALC269_FIXUP_HP_GPIO_MIC1_LED), SND_PCI_QUIRK(0x103c, 0x22fb, "HP", ALC269_FIXUP_HP_GPIO_MIC1_LED), - SND_PCI_QUIRK(0x103c, 0x8004, "HP", ALC269_FIXUP_HP_GPIO_MIC1_LED), + SND_PCI_QUIRK(0x103c, 0x8004, "HP", ALC269_FIXUP_HP_GPIO4), /* ALC290 */ SND_PCI_QUIRK(0x103c, 0x221b, "HP", ALC269_FIXUP_HP_GPIO_MIC1_LED), SND_PCI_QUIRK(0x103c, 0x2221, "HP", ALC269_FIXUP_HP_GPIO_MIC1_LED), @@ -4742,7 +4767,7 @@ static const struct snd_pci_quirk alc269_fixup_tbl[] = { SND_PCI_QUIRK(0x103c, 0x2255, "HP", ALC269_FIXUP_HP_GPIO_MIC1_LED), SND_PCI_QUIRK(0x103c, 0x2256, "HP", ALC269_FIXUP_HP_GPIO_MIC1_LED), SND_PCI_QUIRK(0x103c, 0x2257, "HP", ALC269_FIXUP_HP_GPIO_MIC1_LED), - SND_PCI_QUIRK(0x103c, 0x2258, "HP", ALC269_FIXUP_HP_GPIO_MIC1_LED), + SND_PCI_QUIRK(0x103c, 0x2258, "HP", ALC269_FIXUP_HP_GPIO4), SND_PCI_QUIRK(0x103c, 0x2259, "HP", ALC269_FIXUP_HP_GPIO_MIC1_LED), SND_PCI_QUIRK(0x103c, 0x225a, "HP", ALC269_FIXUP_HP_GPIO_MIC1_LED), SND_PCI_QUIRK(0x103c, 0x2260, "HP", ALC269_FIXUP_HP_MUTE_LED_MIC1), @@ -4751,7 +4776,7 @@ static const struct snd_pci_quirk alc269_fixup_tbl[] = { SND_PCI_QUIRK(0x103c, 0x2265, "HP", ALC269_FIXUP_HP_MUTE_LED_MIC1), SND_PCI_QUIRK(0x103c, 0x2272, "HP", ALC269_FIXUP_HP_GPIO_MIC1_LED), SND_PCI_QUIRK(0x103c, 0x2273, "HP", ALC269_FIXUP_HP_GPIO_MIC1_LED), - SND_PCI_QUIRK(0x103c, 0x2277, "HP", ALC269_FIXUP_HP_GPIO_MIC1_LED), + SND_PCI_QUIRK(0x103c, 0x2277, "HP", ALC269_FIXUP_HP_GPIO4), SND_PCI_QUIRK(0x103c, 0x2278, "HP", ALC269_FIXUP_HP_GPIO_MIC1_LED), SND_PCI_QUIRK(0x103c, 0x227f, "HP", ALC269_FIXUP_HP_MUTE_LED_MIC1), SND_PCI_QUIRK(0x103c, 0x2282, "HP", ALC269_FIXUP_HP_MUTE_LED_MIC1), From cf51eb9d0c6027d083893f8a72f26d7f007f1ff7 Mon Sep 17 00:00:00 2001 From: David Henningsson Date: Thu, 30 Oct 2014 08:26:02 +0100 Subject: [PATCH 050/371] ALSA: hda - change three SSID quirks to one pin quirk These three HP machines all have the same pin config, so we can change it to a pin quirk. Signed-off-by: David Henningsson Signed-off-by: Takashi Iwai --- sound/pci/hda/patch_realtek.c | 16 +++++++++++++--- 1 file changed, 13 insertions(+), 3 deletions(-) diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c index d16d8ec95200..22d9d2104e99 100644 --- a/sound/pci/hda/patch_realtek.c +++ b/sound/pci/hda/patch_realtek.c @@ -4753,7 +4753,6 @@ static const struct snd_pci_quirk alc269_fixup_tbl[] = { SND_PCI_QUIRK(0x103c, 0x22cf, "HP", ALC269_FIXUP_HP_MUTE_LED_MIC1), SND_PCI_QUIRK(0x103c, 0x22dc, "HP", ALC269_FIXUP_HP_GPIO_MIC1_LED), SND_PCI_QUIRK(0x103c, 0x22fb, "HP", ALC269_FIXUP_HP_GPIO_MIC1_LED), - SND_PCI_QUIRK(0x103c, 0x8004, "HP", ALC269_FIXUP_HP_GPIO4), /* ALC290 */ SND_PCI_QUIRK(0x103c, 0x221b, "HP", ALC269_FIXUP_HP_GPIO_MIC1_LED), SND_PCI_QUIRK(0x103c, 0x2221, "HP", ALC269_FIXUP_HP_GPIO_MIC1_LED), @@ -4767,7 +4766,6 @@ static const struct snd_pci_quirk alc269_fixup_tbl[] = { SND_PCI_QUIRK(0x103c, 0x2255, "HP", ALC269_FIXUP_HP_GPIO_MIC1_LED), SND_PCI_QUIRK(0x103c, 0x2256, "HP", ALC269_FIXUP_HP_GPIO_MIC1_LED), SND_PCI_QUIRK(0x103c, 0x2257, "HP", ALC269_FIXUP_HP_GPIO_MIC1_LED), - SND_PCI_QUIRK(0x103c, 0x2258, "HP", ALC269_FIXUP_HP_GPIO4), SND_PCI_QUIRK(0x103c, 0x2259, "HP", ALC269_FIXUP_HP_GPIO_MIC1_LED), SND_PCI_QUIRK(0x103c, 0x225a, "HP", ALC269_FIXUP_HP_GPIO_MIC1_LED), SND_PCI_QUIRK(0x103c, 0x2260, "HP", ALC269_FIXUP_HP_MUTE_LED_MIC1), @@ -4776,7 +4774,6 @@ static const struct snd_pci_quirk alc269_fixup_tbl[] = { SND_PCI_QUIRK(0x103c, 0x2265, "HP", ALC269_FIXUP_HP_MUTE_LED_MIC1), SND_PCI_QUIRK(0x103c, 0x2272, "HP", ALC269_FIXUP_HP_GPIO_MIC1_LED), SND_PCI_QUIRK(0x103c, 0x2273, "HP", ALC269_FIXUP_HP_GPIO_MIC1_LED), - SND_PCI_QUIRK(0x103c, 0x2277, "HP", ALC269_FIXUP_HP_GPIO4), SND_PCI_QUIRK(0x103c, 0x2278, "HP", ALC269_FIXUP_HP_GPIO_MIC1_LED), SND_PCI_QUIRK(0x103c, 0x227f, "HP", ALC269_FIXUP_HP_MUTE_LED_MIC1), SND_PCI_QUIRK(0x103c, 0x2282, "HP", ALC269_FIXUP_HP_MUTE_LED_MIC1), @@ -5009,6 +5006,19 @@ static const struct snd_hda_pin_quirk alc269_pin_fixup_tbl[] = { {0x17, 0x40000000}, {0x1d, 0x40700001}, {0x21, 0x02211040}), + SND_HDA_PIN_QUIRK(0x10ec0280, 0x103c, "HP", ALC280_FIXUP_HP_GPIO4, + {0x12, 0x90a60130}, + {0x13, 0x40000000}, + {0x14, 0x90170110}, + {0x15, 0x0421101f}, + {0x16, 0x411111f0}, + {0x17, 0x411111f0}, + {0x18, 0x411111f0}, + {0x19, 0x411111f0}, + {0x1a, 0x04a11020}, + {0x1b, 0x411111f0}, + {0x1d, 0x40748605}, + {0x1e, 0x411111f0}), SND_HDA_PIN_QUIRK(0x10ec0280, 0x103c, "HP", ALC269_FIXUP_HP_GPIO_MIC1_LED, {0x12, 0x90a60140}, {0x13, 0x40000000}, From 1df8874bfab15671fe9433ec20807590ba86b334 Mon Sep 17 00:00:00 2001 From: Kailang Yang Date: Wed, 29 Oct 2014 16:10:13 +0800 Subject: [PATCH 051/371] ALSA: hda/realtek - Update Initial AMP for EAPD control The default EAPD control uses verb command to control EAPD. Some codec does not have verb command for EAPD. It needs to control by hidden register. This update will avoid wrong behavior for some codec. This patch will fix double setup for EAPD. It just needs to turn on by one site for verb command or hidden register controlled. Detailed changes: - alc889_coef_init() is replaced with alc_update_coef_idx() with a correct COEF value. - for ALC262, ALC887 and ALC900, the EAPD setup via the hidden register is removed because this rather conflicts with the EAPD verb setup. - For ALC888-VC, also the hidden register access is removed in alc888_coef_init(). - Remove the dead #if 0 code for ALC267/ALC268. Signed-off-by: Kailang Yang Cc: Signed-off-by: Takashi Iwai --- sound/pci/hda/patch_realtek.c | 34 ++++++++++------------------------ 1 file changed, 10 insertions(+), 24 deletions(-) diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c index 22d9d2104e99..ba72fffa7460 100644 --- a/sound/pci/hda/patch_realtek.c +++ b/sound/pci/hda/patch_realtek.c @@ -291,18 +291,14 @@ static void alc880_unsol_event(struct hda_codec *codec, unsigned int res) /* additional initialization for ALC888 variants */ static void alc888_coef_init(struct hda_codec *codec) { - if (alc_get_coef0(codec) == 0x20) - /* alc888S-VC */ - alc_write_coef_idx(codec, 7, 0x830); - else - /* alc888-VB */ - alc_write_coef_idx(codec, 7, 0x3030); -} - -/* additional initialization for ALC889 variants */ -static void alc889_coef_init(struct hda_codec *codec) -{ - alc_update_coef_idx(codec, 7, 0, 0x2010); + switch (alc_get_coef0(codec) & 0x00f0) { + /* alc888-VA */ + case 0x00: + /* alc888-VB */ + case 0x10: + alc_update_coef_idx(codec, 7, 0, 0x2030); /* Turn EAPD to High */ + break; + } } /* turn on/off EAPD control (only if available) */ @@ -359,25 +355,15 @@ static void alc_auto_init_amp(struct hda_codec *codec, int type) case 0x10ec0260: alc_update_coefex_idx(codec, 0x1a, 7, 0, 0x2010); break; - case 0x10ec0262: case 0x10ec0880: case 0x10ec0882: case 0x10ec0883: case 0x10ec0885: - case 0x10ec0887: - /*case 0x10ec0889:*/ /* this causes an SPDIF problem */ - case 0x10ec0900: - alc889_coef_init(codec); + alc_update_coef_idx(codec, 7, 0, 0x2030); break; case 0x10ec0888: alc888_coef_init(codec); break; -#if 0 /* XXX: This may cause the silent output on speaker on some machines */ - case 0x10ec0267: - case 0x10ec0268: - alc_update_coef_idx(codec, 7, 0, 0x3000); - break; -#endif /* XXX */ } break; } @@ -1710,7 +1696,7 @@ static void alc889_fixup_coef(struct hda_codec *codec, { if (action != HDA_FIXUP_ACT_INIT) return; - alc889_coef_init(codec); + alc_update_coef_idx(codec, 7, 0, 0x2030); } /* toggle speaker-output according to the hp-jack state */ From 14edb593338e3811e818aba286237c365f8881a1 Mon Sep 17 00:00:00 2001 From: Tomas Melin Date: Tue, 28 Oct 2014 15:43:14 -0300 Subject: [PATCH 052/371] [media] rc-core: fix protocol_change regression in ir_raw_event_register MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit IR receiver using nuvoton-cir and lirc required additional configuration steps after upgrade from kernel 3.16 to 3.17-rcX. Bisected regression to commit da6e162d6a4607362f8478c715c797d84d449f8b ("[media] rc-core: simplify sysfs code"). The regression comes from adding function change_protocol in ir-raw.c. It changes behaviour so that only the protocol enabled by driver's map_name will be active after registration. This breaks user space behaviour, lirc does not get key press signals anymore. Enable lirc protocol by default for ir raw decoders to restore original behaviour. Cc: stable@vger.kernel.org # for v3.17 Signed-off-by: Tomas Melin Acked-by: David Härdeman Signed-off-by: Mauro Carvalho Chehab --- drivers/media/rc/rc-ir-raw.c | 1 - drivers/media/rc/rc-main.c | 2 ++ 2 files changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/media/rc/rc-ir-raw.c b/drivers/media/rc/rc-ir-raw.c index e8fff2add265..b732ac6a26d8 100644 --- a/drivers/media/rc/rc-ir-raw.c +++ b/drivers/media/rc/rc-ir-raw.c @@ -262,7 +262,6 @@ int ir_raw_event_register(struct rc_dev *dev) return -ENOMEM; dev->raw->dev = dev; - dev->enabled_protocols = ~0; dev->change_protocol = change_protocol; rc = kfifo_alloc(&dev->raw->kfifo, sizeof(struct ir_raw_event) * MAX_IR_EVENT_SIZE, diff --git a/drivers/media/rc/rc-main.c b/drivers/media/rc/rc-main.c index a7991c7d010a..8d3b74c5a717 100644 --- a/drivers/media/rc/rc-main.c +++ b/drivers/media/rc/rc-main.c @@ -1421,6 +1421,8 @@ int rc_register_device(struct rc_dev *dev) if (dev->change_protocol) { u64 rc_type = (1 << rc_map->rc_type); + if (dev->driver_type == RC_DRIVER_IR_RAW) + rc_type |= RC_BIT_LIRC; rc = dev->change_protocol(dev, &rc_type); if (rc < 0) goto out_raw; From cef83483341e258beed49ce78fb2cc0c46ab1757 Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Thu, 30 Oct 2014 06:54:12 -0300 Subject: [PATCH 053/371] [media] rc5-decoder: BZ#85721: Fix RC5-SZ decoding MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Changeset e87b540be2dd broke RC5-SZ decoding, as it forgot to add the extra bit check for the enabled protocols at the beginning of the logic. Signed-off-by: Mauro Carvalho Chehab Acked-by: David Härdeman Signed-off-by: Mauro Carvalho Chehab --- drivers/media/rc/ir-rc5-decoder.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/media/rc/ir-rc5-decoder.c b/drivers/media/rc/ir-rc5-decoder.c index 2ef763928ca4..84fa6e9b59a1 100644 --- a/drivers/media/rc/ir-rc5-decoder.c +++ b/drivers/media/rc/ir-rc5-decoder.c @@ -53,7 +53,7 @@ static int ir_rc5_decode(struct rc_dev *dev, struct ir_raw_event ev) u32 scancode; enum rc_type protocol; - if (!(dev->enabled_protocols & (RC_BIT_RC5 | RC_BIT_RC5X))) + if (!(dev->enabled_protocols & (RC_BIT_RC5 | RC_BIT_RC5X | RC_BIT_RC5_SZ))) return 0; if (!is_timing_event(ev)) { From 46238845bd609a5c0fbe076e1b82b4c5b33360b2 Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Tue, 21 Oct 2014 20:56:42 +0200 Subject: [PATCH 054/371] mac80211: properly flush delayed scan work on interface removal When an interface is deleted, an ongoing hardware scan is canceled and the driver must abort the scan, at the very least reporting completion while the interface is removed. However, if it scheduled the work that might only run after everything is said and done, which leads to cfg80211 warning that the scan isn't reported as finished yet; this is no fault of the driver, it already did, but mac80211 hasn't processed it. To fix this situation, flush the delayed work when the interface being removed is the one that was executing the scan. Cc: stable@vger.kernel.org Reported-by: Sujith Manoharan Tested-by: Sujith Manoharan Signed-off-by: Johannes Berg --- net/mac80211/iface.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/net/mac80211/iface.c b/net/mac80211/iface.c index 3b9e2b7b3f30..653f5eb07a27 100644 --- a/net/mac80211/iface.c +++ b/net/mac80211/iface.c @@ -766,10 +766,12 @@ static void ieee80211_do_stop(struct ieee80211_sub_if_data *sdata, int i, flushed; struct ps_data *ps; struct cfg80211_chan_def chandef; + bool cancel_scan; clear_bit(SDATA_STATE_RUNNING, &sdata->state); - if (rcu_access_pointer(local->scan_sdata) == sdata) + cancel_scan = rcu_access_pointer(local->scan_sdata) == sdata; + if (cancel_scan) ieee80211_scan_cancel(local); /* @@ -992,6 +994,9 @@ static void ieee80211_do_stop(struct ieee80211_sub_if_data *sdata, ieee80211_recalc_ps(local, -1); + if (cancel_scan) + flush_delayed_work(&local->scan_work); + if (local->open_count == 0) { ieee80211_stop_device(local); From f4fd36b8802781238beb99015b40af4425f3dfa9 Mon Sep 17 00:00:00 2001 From: Amit Daniel Kachhap Date: Thu, 30 Oct 2014 12:24:51 +0000 Subject: [PATCH 055/371] arm64: psci: fix cpu_suspend to check idle state type for index This fix rectifies the psci cpu_suspend implementation to check the PSCI power state parameter type field associated with the requested idle state index. Acked-by: Lorenzo Pieralisi Signed-off-by: Amit Daniel Kachhap Signed-off-by: Will Deacon --- arch/arm64/kernel/psci.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm64/kernel/psci.c b/arch/arm64/kernel/psci.c index 866c1c821860..663da771580a 100644 --- a/arch/arm64/kernel/psci.c +++ b/arch/arm64/kernel/psci.c @@ -528,7 +528,7 @@ static int __maybe_unused cpu_psci_cpu_suspend(unsigned long index) if (WARN_ON_ONCE(!index)) return -EINVAL; - if (state->type == PSCI_POWER_STATE_TYPE_STANDBY) + if (state[index - 1].type == PSCI_POWER_STATE_TYPE_STANDBY) ret = psci_ops.cpu_suspend(state[index - 1], 0); else ret = __cpu_suspend(index, psci_suspend_finisher); From 8c5bcded11cb607b1bb5920de3b9c882136d27db Mon Sep 17 00:00:00 2001 From: Ulrich Eckhardt Date: Fri, 10 Oct 2014 14:19:12 -0300 Subject: [PATCH 056/371] [media] ds3000: fix LNB supply voltage on Tevii S480 on initialization The Tevii S480 outputs 18V on startup for the LNB supply voltage and does not automatically power down. This blocks other receivers connected to a satellite channel router (EN50494), since the receivers can not send the required DiSEqC sequences when the Tevii card is connected to a the same SCR. This patch switches off the LNB supply voltage on initialization of the frontend. [mchehab@osg.samsung.com: add a comment about why we're explicitly turning off voltage at device init] Cc: stable@vger.kernel.org Signed-off-by: Ulrich Eckhardt Signed-off-by: Mauro Carvalho Chehab --- drivers/media/dvb-frontends/ds3000.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/media/dvb-frontends/ds3000.c b/drivers/media/dvb-frontends/ds3000.c index 335daeff91b9..9d0d0347758f 100644 --- a/drivers/media/dvb-frontends/ds3000.c +++ b/drivers/media/dvb-frontends/ds3000.c @@ -864,6 +864,13 @@ struct dvb_frontend *ds3000_attach(const struct ds3000_config *config, memcpy(&state->frontend.ops, &ds3000_ops, sizeof(struct dvb_frontend_ops)); state->frontend.demodulator_priv = state; + + /* + * Some devices like T480 starts with voltage on. Be sure + * to turn voltage off during init, as this can otherwise + * interfere with Unicable SCR systems. + */ + ds3000_set_voltage(&state->frontend, SEC_VOLTAGE_OFF); return &state->frontend; error3: From 897f1acbb6702ddaa953e8d8436eee3b12016c7e Mon Sep 17 00:00:00 2001 From: Richard Guy Briggs Date: Thu, 30 Oct 2014 11:22:53 -0400 Subject: [PATCH 057/371] audit: AUDIT_FEATURE_CHANGE message format missing delimiting space Add a space between subj= and feature= fields to make them parsable. Signed-off-by: Richard Guy Briggs Cc: stable@vger.kernel.org Signed-off-by: Paul Moore --- kernel/audit.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/kernel/audit.c b/kernel/audit.c index 53bb39bf79e2..8ee4508f9666 100644 --- a/kernel/audit.c +++ b/kernel/audit.c @@ -739,7 +739,7 @@ static void audit_log_feature_change(int which, u32 old_feature, u32 new_feature ab = audit_log_start(NULL, GFP_KERNEL, AUDIT_FEATURE_CHANGE); audit_log_task_info(ab, current); - audit_log_format(ab, "feature=%s old=%u new=%u old_lock=%u new_lock=%u res=%d", + audit_log_format(ab, " feature=%s old=%u new=%u old_lock=%u new_lock=%u res=%d", audit_feature_names[which], !!old_feature, !!new_feature, !!old_lock, !!new_lock, res); audit_log_end(ab); From ece9c72accdc45c3a9484dacb1125ce572647288 Mon Sep 17 00:00:00 2001 From: Jan Kara Date: Thu, 30 Oct 2014 20:43:38 +0100 Subject: [PATCH 058/371] block: Fix computation of merged request priority Priority of a merged request is computed by ioprio_best(). If one of the requests has undefined priority (IOPRIO_CLASS_NONE) and another request has priority from IOPRIO_CLASS_BE, the function will return the undefined priority which is wrong. Fix the function to properly return priority of a request with the defined priority. Fixes: d58cdfb89ce0c6bd5f81ae931a984ef298dbda20 CC: stable@vger.kernel.org Signed-off-by: Jan Kara Reviewed-by: Jeff Moyer Signed-off-by: Jens Axboe --- block/ioprio.c | 14 ++++++++------ 1 file changed, 8 insertions(+), 6 deletions(-) diff --git a/block/ioprio.c b/block/ioprio.c index e50170ca7c33..31666c92b46a 100644 --- a/block/ioprio.c +++ b/block/ioprio.c @@ -157,14 +157,16 @@ out: int ioprio_best(unsigned short aprio, unsigned short bprio) { - unsigned short aclass = IOPRIO_PRIO_CLASS(aprio); - unsigned short bclass = IOPRIO_PRIO_CLASS(bprio); + unsigned short aclass; + unsigned short bclass; - if (aclass == IOPRIO_CLASS_NONE) - aclass = IOPRIO_CLASS_BE; - if (bclass == IOPRIO_CLASS_NONE) - bclass = IOPRIO_CLASS_BE; + if (!ioprio_valid(aprio)) + aprio = IOPRIO_PRIO_VALUE(IOPRIO_CLASS_BE, IOPRIO_NORM); + if (!ioprio_valid(bprio)) + bprio = IOPRIO_PRIO_VALUE(IOPRIO_CLASS_BE, IOPRIO_NORM); + aclass = IOPRIO_PRIO_CLASS(aprio); + bclass = IOPRIO_PRIO_CLASS(bprio); if (aclass == bclass) return min(aprio, bprio); if (aclass > bclass) From ec1f1276022e4e3ca40871810217d513e39ff250 Mon Sep 17 00:00:00 2001 From: "David S. Miller" Date: Fri, 31 Oct 2014 13:43:06 -0400 Subject: [PATCH 059/371] sunhme: Add DMA mapping error checks. Reported-by: Meelis Roos Tested-by: Meelis Roos Signed-off-by: David S. Miller --- drivers/net/ethernet/sun/sunhme.c | 62 ++++++++++++++++++++++++++++--- 1 file changed, 57 insertions(+), 5 deletions(-) diff --git a/drivers/net/ethernet/sun/sunhme.c b/drivers/net/ethernet/sun/sunhme.c index 72c8525d5457..9c014803b03b 100644 --- a/drivers/net/ethernet/sun/sunhme.c +++ b/drivers/net/ethernet/sun/sunhme.c @@ -1262,6 +1262,7 @@ static void happy_meal_init_rings(struct happy_meal *hp) HMD(("init rxring, ")); for (i = 0; i < RX_RING_SIZE; i++) { struct sk_buff *skb; + u32 mapping; skb = happy_meal_alloc_skb(RX_BUF_ALLOC_SIZE, GFP_ATOMIC); if (!skb) { @@ -1272,10 +1273,16 @@ static void happy_meal_init_rings(struct happy_meal *hp) /* Because we reserve afterwards. */ skb_put(skb, (ETH_FRAME_LEN + RX_OFFSET + 4)); + mapping = dma_map_single(hp->dma_dev, skb->data, RX_BUF_ALLOC_SIZE, + DMA_FROM_DEVICE); + if (dma_mapping_error(hp->dma_dev, mapping)) { + dev_kfree_skb_any(skb); + hme_write_rxd(hp, &hb->happy_meal_rxd[i], 0, 0); + continue; + } hme_write_rxd(hp, &hb->happy_meal_rxd[i], (RXFLAG_OWN | ((RX_BUF_ALLOC_SIZE - RX_OFFSET) << 16)), - dma_map_single(hp->dma_dev, skb->data, RX_BUF_ALLOC_SIZE, - DMA_FROM_DEVICE)); + mapping); skb_reserve(skb, RX_OFFSET); } @@ -2020,6 +2027,7 @@ static void happy_meal_rx(struct happy_meal *hp, struct net_device *dev) skb = hp->rx_skbs[elem]; if (len > RX_COPY_THRESHOLD) { struct sk_buff *new_skb; + u32 mapping; /* Now refill the entry, if we can. */ new_skb = happy_meal_alloc_skb(RX_BUF_ALLOC_SIZE, GFP_ATOMIC); @@ -2027,13 +2035,21 @@ static void happy_meal_rx(struct happy_meal *hp, struct net_device *dev) drops++; goto drop_it; } + skb_put(new_skb, (ETH_FRAME_LEN + RX_OFFSET + 4)); + mapping = dma_map_single(hp->dma_dev, new_skb->data, + RX_BUF_ALLOC_SIZE, + DMA_FROM_DEVICE); + if (unlikely(dma_mapping_error(hp->dma_dev, mapping))) { + dev_kfree_skb_any(new_skb); + drops++; + goto drop_it; + } + dma_unmap_single(hp->dma_dev, dma_addr, RX_BUF_ALLOC_SIZE, DMA_FROM_DEVICE); hp->rx_skbs[elem] = new_skb; - skb_put(new_skb, (ETH_FRAME_LEN + RX_OFFSET + 4)); hme_write_rxd(hp, this, (RXFLAG_OWN|((RX_BUF_ALLOC_SIZE-RX_OFFSET)<<16)), - dma_map_single(hp->dma_dev, new_skb->data, RX_BUF_ALLOC_SIZE, - DMA_FROM_DEVICE)); + mapping); skb_reserve(new_skb, RX_OFFSET); /* Trim the original skb for the netif. */ @@ -2248,6 +2264,25 @@ static void happy_meal_tx_timeout(struct net_device *dev) netif_wake_queue(dev); } +static void unmap_partial_tx_skb(struct happy_meal *hp, u32 first_mapping, + u32 first_len, u32 first_entry, u32 entry) +{ + struct happy_meal_txd *txbase = &hp->happy_block->happy_meal_txd[0]; + + dma_unmap_single(hp->dma_dev, first_mapping, first_len, DMA_TO_DEVICE); + + first_entry = NEXT_TX(first_entry); + while (first_entry != entry) { + struct happy_meal_txd *this = &txbase[first_entry]; + u32 addr, len; + + addr = hme_read_desc32(hp, &this->tx_addr); + len = hme_read_desc32(hp, &this->tx_flags); + len &= TXFLAG_SIZE; + dma_unmap_page(hp->dma_dev, addr, len, DMA_TO_DEVICE); + } +} + static netdev_tx_t happy_meal_start_xmit(struct sk_buff *skb, struct net_device *dev) { @@ -2284,6 +2319,8 @@ static netdev_tx_t happy_meal_start_xmit(struct sk_buff *skb, len = skb->len; mapping = dma_map_single(hp->dma_dev, skb->data, len, DMA_TO_DEVICE); + if (unlikely(dma_mapping_error(hp->dma_dev, mapping))) + goto out_dma_error; tx_flags |= (TXFLAG_SOP | TXFLAG_EOP); hme_write_txd(hp, &hp->happy_block->happy_meal_txd[entry], (tx_flags | (len & TXFLAG_SIZE)), @@ -2299,6 +2336,8 @@ static netdev_tx_t happy_meal_start_xmit(struct sk_buff *skb, first_len = skb_headlen(skb); first_mapping = dma_map_single(hp->dma_dev, skb->data, first_len, DMA_TO_DEVICE); + if (unlikely(dma_mapping_error(hp->dma_dev, first_mapping))) + goto out_dma_error; entry = NEXT_TX(entry); for (frag = 0; frag < skb_shinfo(skb)->nr_frags; frag++) { @@ -2308,6 +2347,11 @@ static netdev_tx_t happy_meal_start_xmit(struct sk_buff *skb, len = skb_frag_size(this_frag); mapping = skb_frag_dma_map(hp->dma_dev, this_frag, 0, len, DMA_TO_DEVICE); + if (unlikely(dma_mapping_error(hp->dma_dev, mapping))) { + unmap_partial_tx_skb(hp, first_mapping, first_len, + first_entry, entry); + goto out_dma_error; + } this_txflags = tx_flags; if (frag == skb_shinfo(skb)->nr_frags - 1) this_txflags |= TXFLAG_EOP; @@ -2333,6 +2377,14 @@ static netdev_tx_t happy_meal_start_xmit(struct sk_buff *skb, tx_add_log(hp, TXLOG_ACTION_TXMIT, 0); return NETDEV_TX_OK; + +out_dma_error: + hp->tx_skbs[hp->tx_new] = NULL; + spin_unlock_irq(&hp->happy_lock); + + dev_kfree_skb_any(skb); + dev->stats.tx_dropped++; + return NETDEV_TX_OK; } static struct net_device_stats *happy_meal_get_stats(struct net_device *dev) From 7da89a2a3776442a57e918ca0b8678d1b16a7072 Mon Sep 17 00:00:00 2001 From: "David S. Miller" Date: Sat, 1 Nov 2014 00:33:58 -0400 Subject: [PATCH 060/371] sparc64: Fix crashes in schizo_pcierr_intr_other(). Meelis Roos reports crashes during bootup on a V480 that look like this: ==================== [ 61.300577] PCI: Scanning PBM /pci@9,600000 [ 61.304867] schizo f009b070: PCI host bridge to bus 0003:00 [ 61.310385] pci_bus 0003:00: root bus resource [io 0x7ffe9000000-0x7ffe9ffffff] (bus address [0x0000-0xffffff]) [ 61.320515] pci_bus 0003:00: root bus resource [mem 0x7fb00000000-0x7fbffffffff] (bus address [0x00000000-0xffffffff]) [ 61.331173] pci_bus 0003:00: root bus resource [bus 00] [ 61.385344] Unable to handle kernel NULL pointer dereference [ 61.390970] tsk->{mm,active_mm}->context = 0000000000000000 [ 61.396515] tsk->{mm,active_mm}->pgd = fff000b000002000 [ 61.401716] \|/ ____ \|/ [ 61.401716] "@'/ .. \`@" [ 61.401716] /_| \__/ |_\ [ 61.401716] \__U_/ [ 61.416362] swapper/0(0): Oops [#1] [ 61.419837] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 3.18.0-rc1-00422-g2cc9188-dirty #24 [ 61.427975] task: fff000b0fd8e9c40 ti: fff000b0fd928000 task.ti: fff000b0fd928000 [ 61.435426] TSTATE: 0000004480e01602 TPC: 00000000004455e4 TNPC: 00000000004455e8 Y: 00000000 Not tainted [ 61.445230] TPC: [ 61.449897] g0: 0000000000000000 g1: 0000000000000000 g2: 0000000000a10f78 g3: 000000000000000a [ 61.458563] g4: fff000b0fd8e9c40 g5: fff000b0fdd82000 g6: fff000b0fd928000 g7: 000000000000000a [ 61.467229] o0: 000000000000003d o1: 0000000000000000 o2: 0000000000000006 o3: fff000b0ffa5fc7e [ 61.475894] o4: 0000000000060000 o5: c000000000000000 sp: fff000b0ffa5f3c1 ret_pc: 00000000004455cc [ 61.484909] RPC: [ 61.489500] l0: fff000b0fd8e9c40 l1: 0000000000a20800 l2: 0000000000000000 l3: 000000000119a430 [ 61.498164] l4: 0000000001742400 l5: 00000000011cfbe0 l6: 00000000011319c0 l7: fff000b0fd8ea348 [ 61.506830] i0: 0000000000000000 i1: fff000b0fdb34000 i2: 0000000320000000 i3: 0000000000000000 [ 61.515497] i4: 00060002010b003f i5: 0000040004e02000 i6: fff000b0ffa5f481 i7: 00000000004a9920 [ 61.524175] I7: [ 61.529099] Call Trace: [ 61.531531] [00000000004a9920] handle_irq_event_percpu+0x40/0x140 [ 61.537681] [00000000004a9a58] handle_irq_event+0x38/0x80 [ 61.543145] [00000000004ac77c] handle_fasteoi_irq+0xbc/0x200 [ 61.548860] [00000000004a9084] generic_handle_irq+0x24/0x40 [ 61.554500] [000000000042be0c] handler_irq+0xac/0x100 ==================== The problem is that pbm->pci_bus->self is NULL. This code is trying to go through the standard PCI config space interfaces to read the PCI controller's PCI_STATUS register. This doesn't work, because we more often than not do not enumerate the PCI controller as a bonafide PCI device during the OF device node scan. Therefore bus->self remains NULL. Existing common code for PSYCHO and PSYCHO-like PCI controllers handles this properly, by doing the config space access directly. Do the same here, pbm->pci_ops->{read,write}(). Reported-by: Meelis Roos Tested-by: Meelis Roos Signed-off-by: David S. Miller --- arch/sparc/kernel/pci_schizo.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/arch/sparc/kernel/pci_schizo.c b/arch/sparc/kernel/pci_schizo.c index 8f76f23dac38..f9c6813c132d 100644 --- a/arch/sparc/kernel/pci_schizo.c +++ b/arch/sparc/kernel/pci_schizo.c @@ -581,7 +581,7 @@ static irqreturn_t schizo_pcierr_intr_other(struct pci_pbm_info *pbm) { unsigned long csr_reg, csr, csr_error_bits; irqreturn_t ret = IRQ_NONE; - u16 stat; + u32 stat; csr_reg = pbm->pbm_regs + SCHIZO_PCI_CTRL; csr = upa_readq(csr_reg); @@ -617,7 +617,7 @@ static irqreturn_t schizo_pcierr_intr_other(struct pci_pbm_info *pbm) pbm->name); ret = IRQ_HANDLED; } - pci_read_config_word(pbm->pci_bus->self, PCI_STATUS, &stat); + pbm->pci_ops->read(pbm->pci_bus, 0, PCI_STATUS, 2, &stat); if (stat & (PCI_STATUS_PARITY | PCI_STATUS_SIG_TARGET_ABORT | PCI_STATUS_REC_TARGET_ABORT | @@ -625,7 +625,7 @@ static irqreturn_t schizo_pcierr_intr_other(struct pci_pbm_info *pbm) PCI_STATUS_SIG_SYSTEM_ERROR)) { printk("%s: PCI bus error, PCI_STATUS[%04x]\n", pbm->name, stat); - pci_write_config_word(pbm->pci_bus->self, PCI_STATUS, 0xffff); + pbm->pci_ops->write(pbm->pci_bus, 0, PCI_STATUS, 2, 0xffff); ret = IRQ_HANDLED; } return ret; From 437374735c0055433f8300ba59f8cf7214c58ad3 Mon Sep 17 00:00:00 2001 From: Sudip Mukherjee Date: Sat, 1 Nov 2014 16:59:34 +0530 Subject: [PATCH 061/371] net: mvpp2: fix possible memory leak we are allocating memory using kzalloc for struct mvpp2_prs_entry, but later when we are getting error we were just returning the error value without releasing the memory. Signed-off-by: Sudip Mukherjee Signed-off-by: David S. Miller --- drivers/net/ethernet/marvell/mvpp2.c | 27 ++++++++++++++++++--------- 1 file changed, 18 insertions(+), 9 deletions(-) diff --git a/drivers/net/ethernet/marvell/mvpp2.c b/drivers/net/ethernet/marvell/mvpp2.c index ece83f101526..fdf3e382e464 100644 --- a/drivers/net/ethernet/marvell/mvpp2.c +++ b/drivers/net/ethernet/marvell/mvpp2.c @@ -1692,6 +1692,7 @@ static int mvpp2_prs_vlan_add(struct mvpp2 *priv, unsigned short tpid, int ai, { struct mvpp2_prs_entry *pe; int tid_aux, tid; + int ret = 0; pe = mvpp2_prs_vlan_find(priv, tpid, ai); @@ -1723,8 +1724,10 @@ static int mvpp2_prs_vlan_add(struct mvpp2 *priv, unsigned short tpid, int ai, break; } - if (tid <= tid_aux) - return -EINVAL; + if (tid <= tid_aux) { + ret = -EINVAL; + goto error; + } memset(pe, 0 , sizeof(struct mvpp2_prs_entry)); mvpp2_prs_tcam_lu_set(pe, MVPP2_PRS_LU_VLAN); @@ -1756,9 +1759,10 @@ static int mvpp2_prs_vlan_add(struct mvpp2 *priv, unsigned short tpid, int ai, mvpp2_prs_hw_write(priv, pe); +error: kfree(pe); - return 0; + return ret; } /* Get first free double vlan ai number */ @@ -1821,7 +1825,7 @@ static int mvpp2_prs_double_vlan_add(struct mvpp2 *priv, unsigned short tpid1, unsigned int port_map) { struct mvpp2_prs_entry *pe; - int tid_aux, tid, ai; + int tid_aux, tid, ai, ret = 0; pe = mvpp2_prs_double_vlan_find(priv, tpid1, tpid2); @@ -1838,8 +1842,10 @@ static int mvpp2_prs_double_vlan_add(struct mvpp2 *priv, unsigned short tpid1, /* Set ai value for new double vlan entry */ ai = mvpp2_prs_double_vlan_ai_free_get(priv); - if (ai < 0) - return ai; + if (ai < 0) { + ret = ai; + goto error; + } /* Get first single/triple vlan tid */ for (tid_aux = MVPP2_PE_FIRST_FREE_TID; @@ -1859,8 +1865,10 @@ static int mvpp2_prs_double_vlan_add(struct mvpp2 *priv, unsigned short tpid1, break; } - if (tid >= tid_aux) - return -ERANGE; + if (tid >= tid_aux) { + ret = -ERANGE; + goto error; + } memset(pe, 0, sizeof(struct mvpp2_prs_entry)); mvpp2_prs_tcam_lu_set(pe, MVPP2_PRS_LU_VLAN); @@ -1887,8 +1895,9 @@ static int mvpp2_prs_double_vlan_add(struct mvpp2 *priv, unsigned short tpid1, mvpp2_prs_tcam_port_map_set(pe, port_map); mvpp2_prs_hw_write(priv, pe); +error: kfree(pe); - return 0; + return ret; } /* IPv4 header parsing for fragmentation and L4 offset */ From 3e8fc38c21d6908b394508a8c9bb220935fed4d2 Mon Sep 17 00:00:00 2001 From: Florian Fainelli Date: Fri, 31 Oct 2014 15:51:34 -0700 Subject: [PATCH 062/371] net: systemport: fix DMA allocation/freeing sizes We should not be allocating a single byte of DMA coherent memory, but instead a full-sized struct dma_desc (8 bytes). Fixes: 80105befdb4b ("net: systemport: add Broadcom SYSTEMPORT Ethernet MAC driver") Signed-off-by: Florian Fainelli Signed-off-by: David S. Miller --- drivers/net/ethernet/broadcom/bcmsysport.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/net/ethernet/broadcom/bcmsysport.c b/drivers/net/ethernet/broadcom/bcmsysport.c index 3a6778a667f4..c81bf74685c0 100644 --- a/drivers/net/ethernet/broadcom/bcmsysport.c +++ b/drivers/net/ethernet/broadcom/bcmsysport.c @@ -1110,7 +1110,8 @@ static int bcm_sysport_init_tx_ring(struct bcm_sysport_priv *priv, /* We just need one DMA descriptor which is DMA-able, since writing to * the port will allocate a new descriptor in its internal linked-list */ - p = dma_zalloc_coherent(kdev, 1, &ring->desc_dma, GFP_KERNEL); + p = dma_zalloc_coherent(kdev, sizeof(struct dma_desc), &ring->desc_dma, + GFP_KERNEL); if (!p) { netif_err(priv, hw, priv->netdev, "DMA alloc failed\n"); return -ENOMEM; @@ -1183,7 +1184,8 @@ static void bcm_sysport_fini_tx_ring(struct bcm_sysport_priv *priv, ring->cbs = NULL; if (ring->desc_dma) { - dma_free_coherent(kdev, 1, ring->desc_cpu, ring->desc_dma); + dma_free_coherent(kdev, sizeof(struct dma_desc), + ring->desc_cpu, ring->desc_dma); ring->desc_dma = 0; } ring->size = 0; From 914adb55afbc7e449512f609de19e548d1054480 Mon Sep 17 00:00:00 2001 From: Florian Fainelli Date: Fri, 31 Oct 2014 15:51:35 -0700 Subject: [PATCH 063/371] net: systemport: do not crash freeing an unitialized TX ring Callers of bcm_sysport_init_tx_ring() can currently fail, and will always call bcm_sysport_fini_tx_ring() in a loop ending at the number of TX queues (32) without checking if the TX ring was successfully initialized or not. Update bcm_sysport_fini_tx_ring() to return early and avoid a crash de-referencing ring->cbs if the TX ring was not initialized, since ring->cbs is the last part of the initialization done by bcm_sysport_init_tx_ring() that could fail. Fixes: 80105befdb4b ("net: systemport: add Broadcom SYSTEMPORT Ethernet MAC driver") Reported-by: Maxime Bizon Signed-off-by: Florian Fainelli Signed-off-by: David S. Miller --- drivers/net/ethernet/broadcom/bcmsysport.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/net/ethernet/broadcom/bcmsysport.c b/drivers/net/ethernet/broadcom/bcmsysport.c index c81bf74685c0..531bb7c57531 100644 --- a/drivers/net/ethernet/broadcom/bcmsysport.c +++ b/drivers/net/ethernet/broadcom/bcmsysport.c @@ -1175,6 +1175,13 @@ static void bcm_sysport_fini_tx_ring(struct bcm_sysport_priv *priv, if (!(reg & TDMA_DISABLED)) netdev_warn(priv->netdev, "TDMA not stopped!\n"); + /* ring->cbs is the last part in bcm_sysport_init_tx_ring which could + * fail, so by checking this pointer we know whether the TX ring was + * fully initialized or not. + */ + if (!ring->cbs) + return; + napi_disable(&ring->napi); netif_napi_del(&ring->napi); From 4750a0d112cbfcc744929f1530ffe3193436766c Mon Sep 17 00:00:00 2001 From: Borislav Petkov Date: Fri, 31 Oct 2014 23:23:43 +0100 Subject: [PATCH 064/371] x86, microcode, AMD: Fix early ucode loading on 32-bit Konrad triggered the following splat below in a 32-bit guest on an AMD box. As it turns out, in save_microcode_in_initrd_amd() we're using the *physical* address of the container *after* we have enabled paging and thus we #PF in load_microcode_amd() when trying to access the microcode container in the ramdisk range. Because the ramdisk is exactly there: [ 0.000000] RAMDISK: [mem 0x35e04000-0x36ef9fff] and we fault at 0x35e04304. And since this guest doesn't relocate the ramdisk, we don't do the computation which will give us the correct virtual address and we end up with the PA. So, we should actually be using virtual addresses on 32-bit too by the time we're freeing the initrd. Do that then! Unpacking initramfs... BUG: unable to handle kernel paging request at 35d4e304 IP: [] load_microcode_amd+0x25/0x4a0 *pde = 00000000 Oops: 0000 [#1] SMP Modules linked in: CPU: 0 PID: 1 Comm: swapper/0 Not tainted 3.17.1-302.fc21.i686 #1 Hardware name: Xen HVM domU, BIOS 4.4.1 10/01/2014 task: f5098000 ti: f50d0000 task.ti: f50d0000 EIP: 0060:[] EFLAGS: 00010246 CPU: 0 EIP is at load_microcode_amd+0x25/0x4a0 EAX: 00000000 EBX: f6e9ec4c ECX: 00001ec4 EDX: 00000000 ESI: f5d4e000 EDI: 35d4e2fc EBP: f50d1ed0 ESP: f50d1e94 DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068 CR0: 8005003b CR2: 35d4e304 CR3: 00e33000 CR4: 000406d0 Stack: 00000000 00000000 f50d1ebc f50d1ec4 f5d4e000 c0d7735a f50d1ed0 15a3d17f f50d1ec4 00600f20 00001ec4 bfb83203 f6e9ec4c f5d4e000 c0d7735a f50d1ed8 c0d80861 f50d1ee0 c0d80429 f50d1ef0 c0d889a9 f5d4e000 c0000000 f50d1f04 Call Trace: ? unpack_to_rootfs ? unpack_to_rootfs save_microcode_in_initrd_amd save_microcode_in_initrd free_initrd_mem populate_rootfs ? unpack_to_rootfs do_one_initcall ? unpack_to_rootfs ? repair_env_string ? proc_mkdir kernel_init_freeable kernel_init ret_from_kernel_thread ? rest_init Reported-and-tested-by: Konrad Rzeszutek Wilk References: https://bugzilla.redhat.com/show_bug.cgi?id=1158204 Fixes: 75a1ba5b2c52 ("x86, microcode, AMD: Unify valid container checks") Signed-off-by: Borislav Petkov Cc: # v3.14+ Link: http://lkml.kernel.org/r/20141101100100.GA4462@pd.tnic Signed-off-by: Thomas Gleixner --- arch/x86/kernel/cpu/microcode/amd_early.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/arch/x86/kernel/cpu/microcode/amd_early.c b/arch/x86/kernel/cpu/microcode/amd_early.c index 7aa1acc79789..8b75f7050129 100644 --- a/arch/x86/kernel/cpu/microcode/amd_early.c +++ b/arch/x86/kernel/cpu/microcode/amd_early.c @@ -348,6 +348,7 @@ int __init save_microcode_in_initrd_amd(void) { unsigned long cont; enum ucode_state ret; + u8 *cont_va; u32 eax; if (!container) @@ -355,13 +356,15 @@ int __init save_microcode_in_initrd_amd(void) #ifdef CONFIG_X86_32 get_bsp_sig(); - cont = (unsigned long)container; + cont = (unsigned long)container; + cont_va = __va(container); #else /* * We need the physical address of the container for both bitness since * boot_params.hdr.ramdisk_image is a physical address. */ - cont = __pa(container); + cont = __pa(container); + cont_va = container; #endif /* @@ -372,6 +375,8 @@ int __init save_microcode_in_initrd_amd(void) if (relocated_ramdisk) container = (u8 *)(__va(relocated_ramdisk) + (cont - boot_params.hdr.ramdisk_image)); + else + container = cont_va; if (ucode_new_rev) pr_info("microcode: updated early to new patch_level=0x%08x\n", From 1db3ddff1602edf2390b7667dcbaa0f71512e3ea Mon Sep 17 00:00:00 2001 From: Chen Gang Date: Sat, 1 Nov 2014 11:08:08 +0800 Subject: [PATCH 065/371] drivers: net: ethernet: xilinx: xilinx_emaclite: Compatible with 'xlnx, xps-ethernetlite-2.00.b' for QEMU using When use current latest upstream qemu (current version: 2.1.2), need let driver compatible with 'xlnx,xps-ethernetlite-2.00.b', or can not find net device in microblaze qemu. Related QEMU commands under fedora 20: yum install libvirt yum install tunctl tunctl -b ip link set tap0 up brctl addif virbr0 tap0 ./microblaze-softmmu/qemu-system-microblaze -M petalogix-s3adsp1800 \ -kernel ../linux-stable.microblaze/arch/microblaze/boot/linux.bin \ -no-reboot -append "console=ttyUL0,115200 doreboot" -nographic \ -net nic,vlan=0,model=xlnx.xps-ethernetlite,macaddr=00:16:35:AF:94:00 \ -net tap,vlan=0,ifname=tap0,script=no,downscript=no in microblaze qemu bash (guest machine): ifconfig eth0 add 192.168.122.2 netmask 255.255.255.0 ifconfig eth0 up After add this patch, can find the device, and can be used by 'telnetd' (need cross-build busybox with glibc for it), then outside can telnet to it without password. Signed-off-by: Chen Gang Signed-off-by: David S. Miller --- drivers/net/ethernet/xilinx/xilinx_emaclite.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/net/ethernet/xilinx/xilinx_emaclite.c b/drivers/net/ethernet/xilinx/xilinx_emaclite.c index 28dbbdc393eb..298fad395d3a 100644 --- a/drivers/net/ethernet/xilinx/xilinx_emaclite.c +++ b/drivers/net/ethernet/xilinx/xilinx_emaclite.c @@ -1236,6 +1236,7 @@ static struct of_device_id xemaclite_of_match[] = { { .compatible = "xlnx,opb-ethernetlite-1.01.b", }, { .compatible = "xlnx,xps-ethernetlite-1.00.a", }, { .compatible = "xlnx,xps-ethernetlite-2.00.a", }, + { .compatible = "xlnx,xps-ethernetlite-2.00.b", }, { .compatible = "xlnx,xps-ethernetlite-2.01.a", }, { .compatible = "xlnx,xps-ethernetlite-3.00.a", }, { /* end of list */ }, From d52fdbb735c36a209f36a628d40ca9185b349ba7 Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Fri, 31 Oct 2014 21:32:06 +0100 Subject: [PATCH 066/371] smc91x: retrieve IRQ and trigger flags in a modern way The SMC91x is written to explicitly look up the IRQ resource from the platform device and extract the IRQ and flags, however the platform_get_irq() does additional things, like call of_irq_get() in the device tree case, which will translate the IRQ using the irqdomain and defer the probe if the IRQ host cannot be found. As we're not looking up the resource, this will not retrieve the IRQ flags, but that is better done using irqd_get_trigger_type(), as the trigger is what the driver wants to modify. We take care to preserve the semantics that will make the trigger type provided from the resource override any local specifier. Tested on the Nomadik NHK15 which has its SMC91x IRQ line connected to a STMPE2401 GPIO expander on I2C. Signed-off-by: Linus Walleij Signed-off-by: David S. Miller --- drivers/net/ethernet/smsc/smc91x.c | 20 ++++++++++++-------- 1 file changed, 12 insertions(+), 8 deletions(-) diff --git a/drivers/net/ethernet/smsc/smc91x.c b/drivers/net/ethernet/smsc/smc91x.c index 2c62208077fe..6cc3cf6f17c8 100644 --- a/drivers/net/ethernet/smsc/smc91x.c +++ b/drivers/net/ethernet/smsc/smc91x.c @@ -2243,9 +2243,10 @@ static int smc_drv_probe(struct platform_device *pdev) const struct of_device_id *match = NULL; struct smc_local *lp; struct net_device *ndev; - struct resource *res, *ires; + struct resource *res; unsigned int __iomem *addr; unsigned long irq_flags = SMC_IRQ_FLAGS; + unsigned long irq_resflags; int ret; ndev = alloc_etherdev(sizeof(struct smc_local)); @@ -2337,16 +2338,19 @@ static int smc_drv_probe(struct platform_device *pdev) goto out_free_netdev; } - ires = platform_get_resource(pdev, IORESOURCE_IRQ, 0); - if (!ires) { + ndev->irq = platform_get_irq(pdev, 0); + if (ndev->irq <= 0) { ret = -ENODEV; goto out_release_io; } - - ndev->irq = ires->start; - - if (irq_flags == -1 || ires->flags & IRQF_TRIGGER_MASK) - irq_flags = ires->flags & IRQF_TRIGGER_MASK; + /* + * If this platform does not specify any special irqflags, or if + * the resource supplies a trigger, override the irqflags with + * the trigger flags from the resource. + */ + irq_resflags = irqd_get_trigger_type(irq_get_irq_data(ndev->irq)); + if (irq_flags == -1 || irq_resflags & IRQF_TRIGGER_MASK) + irq_flags = irq_resflags & IRQF_TRIGGER_MASK; ret = smc_request_attrib(pdev, ndev); if (ret) From e6023367d779060fddc9a52d1f474085b2b36298 Mon Sep 17 00:00:00 2001 From: Junjie Mao Date: Fri, 31 Oct 2014 21:40:38 +0800 Subject: [PATCH 067/371] x86, kaslr: Prevent .bss from overlaping initrd When choosing a random address, the current implementation does not take into account the reversed space for .bss and .brk sections. Thus the relocated kernel may overlap other components in memory. Here is an example of the overlap from a x86_64 kernel in qemu (the ranges of physical addresses are presented): Physical Address 0x0fe00000 --+--------------------+ <-- randomized base / | relocated kernel | vmlinux.bin | (from vmlinux.bin) | 0x1336d000 (an ELF file) +--------------------+-- \ | | \ 0x1376d870 --+--------------------+ | | relocs table | | 0x13c1c2a8 +--------------------+ .bss and .brk | | | 0x13ce6000 +--------------------+ | | | / 0x13f77000 | initrd |-- | | 0x13fef374 +--------------------+ The initrd image will then be overwritten by the memset during early initialization: [ 1.655204] Unpacking initramfs... [ 1.662831] Initramfs unpacking failed: junk in compressed archive This patch prevents the above situation by requiring a larger space when looking for a random kernel base, so that existing logic can effectively avoids the overlap. [kees: switched to perl to avoid hex translation pain in mawk vs gawk] [kees: calculated overlap without relocs table] Fixes: 82fa9637a2 ("x86, kaslr: Select random position from e820 maps") Reported-by: Fengguang Wu Signed-off-by: Junjie Mao Signed-off-by: Kees Cook Cc: Josh Triplett Cc: Matt Fleming Cc: Ard Biesheuvel Cc: Vivek Goyal Cc: Andi Kleen Cc: stable@vger.kernel.org Link: http://lkml.kernel.org/r/1414762838-13067-1-git-send-email-eternal.n08@gmail.com Signed-off-by: Thomas Gleixner --- arch/x86/boot/compressed/Makefile | 4 +++- arch/x86/boot/compressed/head_32.S | 5 +++-- arch/x86/boot/compressed/head_64.S | 5 ++++- arch/x86/boot/compressed/misc.c | 13 ++++++++++--- arch/x86/boot/compressed/mkpiggy.c | 9 +++++++-- arch/x86/tools/calc_run_size.pl | 30 ++++++++++++++++++++++++++++++ 6 files changed, 57 insertions(+), 9 deletions(-) create mode 100644 arch/x86/tools/calc_run_size.pl diff --git a/arch/x86/boot/compressed/Makefile b/arch/x86/boot/compressed/Makefile index 704f58aa79cd..be1e07d4b596 100644 --- a/arch/x86/boot/compressed/Makefile +++ b/arch/x86/boot/compressed/Makefile @@ -76,8 +76,10 @@ suffix-$(CONFIG_KERNEL_XZ) := xz suffix-$(CONFIG_KERNEL_LZO) := lzo suffix-$(CONFIG_KERNEL_LZ4) := lz4 +RUN_SIZE = $(shell objdump -h vmlinux | \ + perl $(srctree)/arch/x86/tools/calc_run_size.pl) quiet_cmd_mkpiggy = MKPIGGY $@ - cmd_mkpiggy = $(obj)/mkpiggy $< > $@ || ( rm -f $@ ; false ) + cmd_mkpiggy = $(obj)/mkpiggy $< $(RUN_SIZE) > $@ || ( rm -f $@ ; false ) targets += piggy.S $(obj)/piggy.S: $(obj)/vmlinux.bin.$(suffix-y) $(obj)/mkpiggy FORCE diff --git a/arch/x86/boot/compressed/head_32.S b/arch/x86/boot/compressed/head_32.S index cbed1407a5cd..1d7fbbcc196d 100644 --- a/arch/x86/boot/compressed/head_32.S +++ b/arch/x86/boot/compressed/head_32.S @@ -207,7 +207,8 @@ relocated: * Do the decompression, and jump to the new kernel.. */ /* push arguments for decompress_kernel: */ - pushl $z_output_len /* decompressed length */ + pushl $z_run_size /* size of kernel with .bss and .brk */ + pushl $z_output_len /* decompressed length, end of relocs */ leal z_extract_offset_negative(%ebx), %ebp pushl %ebp /* output address */ pushl $z_input_len /* input_len */ @@ -217,7 +218,7 @@ relocated: pushl %eax /* heap area */ pushl %esi /* real mode pointer */ call decompress_kernel /* returns kernel location in %eax */ - addl $24, %esp + addl $28, %esp /* * Jump to the decompressed kernel. diff --git a/arch/x86/boot/compressed/head_64.S b/arch/x86/boot/compressed/head_64.S index 2884e0c3e8a5..6b1766c6c082 100644 --- a/arch/x86/boot/compressed/head_64.S +++ b/arch/x86/boot/compressed/head_64.S @@ -402,13 +402,16 @@ relocated: * Do the decompression, and jump to the new kernel.. */ pushq %rsi /* Save the real mode argument */ + movq $z_run_size, %r9 /* size of kernel with .bss and .brk */ + pushq %r9 movq %rsi, %rdi /* real mode address */ leaq boot_heap(%rip), %rsi /* malloc area for uncompression */ leaq input_data(%rip), %rdx /* input_data */ movl $z_input_len, %ecx /* input_len */ movq %rbp, %r8 /* output target address */ - movq $z_output_len, %r9 /* decompressed length */ + movq $z_output_len, %r9 /* decompressed length, end of relocs */ call decompress_kernel /* returns kernel location in %rax */ + popq %r9 popq %rsi /* diff --git a/arch/x86/boot/compressed/misc.c b/arch/x86/boot/compressed/misc.c index 57ab74df7eea..30dd59a9f0b4 100644 --- a/arch/x86/boot/compressed/misc.c +++ b/arch/x86/boot/compressed/misc.c @@ -358,7 +358,8 @@ asmlinkage __visible void *decompress_kernel(void *rmode, memptr heap, unsigned char *input_data, unsigned long input_len, unsigned char *output, - unsigned long output_len) + unsigned long output_len, + unsigned long run_size) { real_mode = rmode; @@ -381,8 +382,14 @@ asmlinkage __visible void *decompress_kernel(void *rmode, memptr heap, free_mem_ptr = heap; /* Heap */ free_mem_end_ptr = heap + BOOT_HEAP_SIZE; - output = choose_kernel_location(input_data, input_len, - output, output_len); + /* + * The memory hole needed for the kernel is the larger of either + * the entire decompressed kernel plus relocation table, or the + * entire decompressed kernel plus .bss and .brk sections. + */ + output = choose_kernel_location(input_data, input_len, output, + output_len > run_size ? output_len + : run_size); /* Validate memory location choices. */ if ((unsigned long)output & (MIN_KERNEL_ALIGN - 1)) diff --git a/arch/x86/boot/compressed/mkpiggy.c b/arch/x86/boot/compressed/mkpiggy.c index b669ab65bf6c..d8222f213182 100644 --- a/arch/x86/boot/compressed/mkpiggy.c +++ b/arch/x86/boot/compressed/mkpiggy.c @@ -36,11 +36,13 @@ int main(int argc, char *argv[]) uint32_t olen; long ilen; unsigned long offs; + unsigned long run_size; FILE *f = NULL; int retval = 1; - if (argc < 2) { - fprintf(stderr, "Usage: %s compressed_file\n", argv[0]); + if (argc < 3) { + fprintf(stderr, "Usage: %s compressed_file run_size\n", + argv[0]); goto bail; } @@ -74,6 +76,7 @@ int main(int argc, char *argv[]) offs += olen >> 12; /* Add 8 bytes for each 32K block */ offs += 64*1024 + 128; /* Add 64K + 128 bytes slack */ offs = (offs+4095) & ~4095; /* Round to a 4K boundary */ + run_size = atoi(argv[2]); printf(".section \".rodata..compressed\",\"a\",@progbits\n"); printf(".globl z_input_len\n"); @@ -85,6 +88,8 @@ int main(int argc, char *argv[]) /* z_extract_offset_negative allows simplification of head_32.S */ printf(".globl z_extract_offset_negative\n"); printf("z_extract_offset_negative = -0x%lx\n", offs); + printf(".globl z_run_size\n"); + printf("z_run_size = %lu\n", run_size); printf(".globl input_data, input_data_end\n"); printf("input_data:\n"); diff --git a/arch/x86/tools/calc_run_size.pl b/arch/x86/tools/calc_run_size.pl new file mode 100644 index 000000000000..0b0b124d3ece --- /dev/null +++ b/arch/x86/tools/calc_run_size.pl @@ -0,0 +1,30 @@ +#!/usr/bin/perl +# +# Calculate the amount of space needed to run the kernel, including room for +# the .bss and .brk sections. +# +# Usage: +# objdump -h a.out | perl calc_run_size.pl +use strict; + +my $mem_size = 0; +my $file_offset = 0; + +my $sections=" *[0-9]+ \.(?:bss|brk) +"; +while (<>) { + if (/^$sections([0-9a-f]+) +(?:[0-9a-f]+ +){2}([0-9a-f]+)/) { + my $size = hex($1); + my $offset = hex($2); + $mem_size += $size; + if ($file_offset == 0) { + $file_offset = $offset; + } elsif ($file_offset != $offset) { + die ".bss and .brk lack common file offset\n"; + } + } +} + +if ($file_offset == 0) { + die "Never found .bss or .brk file offset\n"; +} +printf("%d\n", $mem_size + $file_offset); From 5129ee22ce4aff7c5907d4c3d67d23f86cd6db9b Mon Sep 17 00:00:00 2001 From: Andrew Lunn Date: Sat, 26 Jul 2014 19:20:37 +0200 Subject: [PATCH 068/371] ARM: mvebu: armada xp: Generalize use of i2c quirk A second product has come to light which makes use of the A0 stepping of the Armada XP SoC. A0 stepping has a hardware bug in the i2c core meaning that hardware offload does not work, resulting in the kernel failing to boot. The quirk detects that the kernel is running on an A0 stepping SoC and disables the use of hardware offload. Currently the quirk is only enabled for PlatHome Openblocks AX3. The AX3 has been produced with both A0 and B0 stepping SoCs. The second product is the Lenovo Iomega IX4-300d. It seems likely that this device will also swap from A0 to B0 SoC sometime during its life. If there are two products using A0, it seems likely there are more products with A0. Also, since the number of A0 SoCs is limited, these products are also likely to transition to B0. Hence detecting at run time is the safest option. So enable the quirk for all Armada XP boards. Tested on an AX3 with A0 stepping. Signed-off-by: Andrew Lunn Acked-by: Gregory CLEMENT Acked-by: Thomas Petazzoni Cc: stable@vger.kernel.org # v3.12+ Fixes: 930ab3d403ae: ("i2c: mv64xxx: Add I2C Transaction Generator support") Link: https://lkml.kernel.org/r/1406395238-29758-2-git-send-email-andrew@lunn.ch Signed-off-by: Jason Cooper --- arch/arm/mach-mvebu/board-v7.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm/mach-mvebu/board-v7.c b/arch/arm/mach-mvebu/board-v7.c index 6478626e3ff6..d0d39f150fab 100644 --- a/arch/arm/mach-mvebu/board-v7.c +++ b/arch/arm/mach-mvebu/board-v7.c @@ -188,7 +188,7 @@ static void __init thermal_quirk(void) static void __init mvebu_dt_init(void) { - if (of_machine_is_compatible("plathome,openblocks-ax3-4")) + if (of_machine_is_compatible("marvell,armadaxp")) i2c_quirk(); if (of_machine_is_compatible("marvell,a375-db")) { external_abort_quirk(); From 9ece8839b1277fb9128ff6833411614ab6c88d68 Mon Sep 17 00:00:00 2001 From: Evgeniy Dushistov Date: Sat, 26 Jul 2014 19:56:59 +0400 Subject: [PATCH 069/371] ARM: orion: Fix for certain sequence of request_irq can cause irq storm The problem is that hardware handled by arm/plat-orion/gpio.c, require ack for edge irq, and no ack for level irq. The code handle this issue, by two "struct irq_chip_type" per one "struct irq_chip_generic". For one "struct irq_chip_generic" irq_ack pointer is setted, for another it is NULL. But we have only one mask_cache per two "struct irq_chip_type". So if we 1)unmask interrupt A for "edge type" trigger, 2)unmask interrupt B for "level type" trigger, 3)unmask interrupt C for "edge type", we, because of usage of generic irq_gc_mask_clr_bit/irq_gc_mask_set_bit, have hardware configured to trigger interrupt B on "edge type", because of shared mask_cache. But kernel think that B is "level type", so when interrupt B occur via "edge" reason, we don't ack it, and B triggered again and again. Signed-off-by: Evgeniy A. Dushistov Link: https://lkml.kernel.org/r/20140726155659.GA22977@fifteen Signed-off-by: Jason Cooper --- arch/arm/plat-orion/gpio.c | 36 ++++++++++++++++++++++++++++++++---- 1 file changed, 32 insertions(+), 4 deletions(-) diff --git a/arch/arm/plat-orion/gpio.c b/arch/arm/plat-orion/gpio.c index b61a3bcc2fa8..e048f6198d68 100644 --- a/arch/arm/plat-orion/gpio.c +++ b/arch/arm/plat-orion/gpio.c @@ -497,6 +497,34 @@ static void orion_gpio_dbg_show(struct seq_file *s, struct gpio_chip *chip) #define orion_gpio_dbg_show NULL #endif +static void orion_gpio_unmask_irq(struct irq_data *d) +{ + struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d); + struct irq_chip_type *ct = irq_data_get_chip_type(d); + u32 reg_val; + u32 mask = d->mask; + + irq_gc_lock(gc); + reg_val = irq_reg_readl(gc->reg_base + ct->regs.mask); + reg_val |= mask; + irq_reg_writel(reg_val, gc->reg_base + ct->regs.mask); + irq_gc_unlock(gc); +} + +static void orion_gpio_mask_irq(struct irq_data *d) +{ + struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d); + struct irq_chip_type *ct = irq_data_get_chip_type(d); + u32 mask = d->mask; + u32 reg_val; + + irq_gc_lock(gc); + reg_val = irq_reg_readl(gc->reg_base + ct->regs.mask); + reg_val &= ~mask; + irq_reg_writel(reg_val, gc->reg_base + ct->regs.mask); + irq_gc_unlock(gc); +} + void __init orion_gpio_init(struct device_node *np, int gpio_base, int ngpio, void __iomem *base, int mask_offset, @@ -565,8 +593,8 @@ void __init orion_gpio_init(struct device_node *np, ct = gc->chip_types; ct->regs.mask = ochip->mask_offset + GPIO_LEVEL_MASK_OFF; ct->type = IRQ_TYPE_LEVEL_HIGH | IRQ_TYPE_LEVEL_LOW; - ct->chip.irq_mask = irq_gc_mask_clr_bit; - ct->chip.irq_unmask = irq_gc_mask_set_bit; + ct->chip.irq_mask = orion_gpio_mask_irq; + ct->chip.irq_unmask = orion_gpio_unmask_irq; ct->chip.irq_set_type = gpio_irq_set_type; ct->chip.name = ochip->chip.label; @@ -575,8 +603,8 @@ void __init orion_gpio_init(struct device_node *np, ct->regs.ack = GPIO_EDGE_CAUSE_OFF; ct->type = IRQ_TYPE_EDGE_RISING | IRQ_TYPE_EDGE_FALLING; ct->chip.irq_ack = irq_gc_ack_clr_bit; - ct->chip.irq_mask = irq_gc_mask_clr_bit; - ct->chip.irq_unmask = irq_gc_mask_set_bit; + ct->chip.irq_mask = orion_gpio_mask_irq; + ct->chip.irq_unmask = orion_gpio_unmask_irq; ct->chip.irq_set_type = gpio_irq_set_type; ct->handler = handle_edge_irq; ct->chip.name = ochip->chip.label; From 298dcb2dd0267d51e4f7c94a628cd0765a50ad75 Mon Sep 17 00:00:00 2001 From: Grzegorz Jaszczyk Date: Thu, 25 Sep 2014 13:17:18 +0200 Subject: [PATCH 070/371] irqchip: armada-370-xp: Fix MSI interrupt handling The MSI interrupts use the 16 high doorbells, which are notified by using IRQ1 of the main interrupt controller. The MSI interrupts were handled correctly for Armada-XP and Armada-370 but not for Armada-375 and Armada-38x, which use chained handler for the MPIC. This commit fixes that by checking proper interrupt number in chained handler for the MPIC. Signed-off-by: Grzegorz Jaszczyk Reviewed-by: Gregory CLEMENT Fixes: bc69b8adfe22 ("irqchip: armada-370-xp: Setup a chained handler for the MPIC") Cc: # v3.15+ Acked-by: Ezequiel Garcia Link: https://lkml.kernel.org/r/1411643839-64925-2-git-send-email-jaz@semihalf.com Signed-off-by: Jason Cooper --- drivers/irqchip/irq-armada-370-xp.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/irqchip/irq-armada-370-xp.c b/drivers/irqchip/irq-armada-370-xp.c index 3e238cd049e6..2f01073d6201 100644 --- a/drivers/irqchip/irq-armada-370-xp.c +++ b/drivers/irqchip/irq-armada-370-xp.c @@ -413,9 +413,9 @@ static void armada_370_xp_mpic_handle_cascade_irq(unsigned int irq, irqmap = readl_relaxed(per_cpu_int_base + ARMADA_375_PPI_CAUSE); - if (irqmap & BIT(0)) { + if (irqmap & BIT(1)) { armada_370_xp_handle_msi_irq(NULL, true); - irqmap &= ~BIT(0); + irqmap &= ~BIT(1); } for_each_set_bit(irqn, &irqmap, BITS_PER_LONG) { From 758e8366754d3fa57da978fef9d2c652f7b55c02 Mon Sep 17 00:00:00 2001 From: Grzegorz Jaszczyk Date: Thu, 25 Sep 2014 13:17:19 +0200 Subject: [PATCH 071/371] irqchip: armada-370-xp: Fix MPIC interrupt handling In both Armada-375 and Armada-38x MPIC interrupts should be identified by reading cause register multiplied by the interrupt mask. A lack of above mentioned multiplication resulted in a bug, caused by the fact that in Armada-375 and Armada-38x some of the interrupts (e.g. network interrupts) can be handled either as a GIC or MPIC interrupts. Therefore during MPIC interrupts handling, cause register shows hits from interrupts even if they are masked for MPIC but unmasked for a GIC. This resulted in 'bad IRQ' error, because masked MPIC interrupt without registered interrupt handler, was trying to be handled during interrupt handling procedure of some other unmasked MPIC interrupt (e.g. local timer irq). This commit fixes that by ensuring that during MPIC interrupt handling only interrupts that are unmasked for MPIC are processed. Signed-off-by: Grzegorz Jaszczyk Reviewed-by: Gregory CLEMENT Fixes: bc69b8adfe22 ("irqchip: armada-370-xp: Setup a chained handler for the MPIC") Cc: # v3.15+ Acked-by: Ezequiel Garcia Link: https://lkml.kernel.org/r/1411643839-64925-3-git-send-email-jaz@semihalf.com Signed-off-by: Jason Cooper --- drivers/irqchip/irq-armada-370-xp.c | 23 +++++++++++++++++------ 1 file changed, 17 insertions(+), 6 deletions(-) diff --git a/drivers/irqchip/irq-armada-370-xp.c b/drivers/irqchip/irq-armada-370-xp.c index 2f01073d6201..6a2e168c3ab0 100644 --- a/drivers/irqchip/irq-armada-370-xp.c +++ b/drivers/irqchip/irq-armada-370-xp.c @@ -43,6 +43,7 @@ #define ARMADA_370_XP_INT_CLEAR_ENABLE_OFFS (0x34) #define ARMADA_370_XP_INT_SOURCE_CTL(irq) (0x100 + irq*4) #define ARMADA_370_XP_INT_SOURCE_CPU_MASK 0xF +#define ARMADA_370_XP_INT_IRQ_FIQ_MASK(cpuid) ((BIT(0) | BIT(8)) << cpuid) #define ARMADA_370_XP_CPU_INTACK_OFFS (0x44) #define ARMADA_375_PPI_CAUSE (0x10) @@ -406,19 +407,29 @@ static void armada_370_xp_mpic_handle_cascade_irq(unsigned int irq, struct irq_desc *desc) { struct irq_chip *chip = irq_get_chip(irq); - unsigned long irqmap, irqn; + unsigned long irqmap, irqn, irqsrc, cpuid; unsigned int cascade_irq; chained_irq_enter(chip, desc); irqmap = readl_relaxed(per_cpu_int_base + ARMADA_375_PPI_CAUSE); - - if (irqmap & BIT(1)) { - armada_370_xp_handle_msi_irq(NULL, true); - irqmap &= ~BIT(1); - } + cpuid = cpu_logical_map(smp_processor_id()); for_each_set_bit(irqn, &irqmap, BITS_PER_LONG) { + irqsrc = readl_relaxed(main_int_base + + ARMADA_370_XP_INT_SOURCE_CTL(irqn)); + + /* Check if the interrupt is not masked on current CPU. + * Test IRQ (0-1) and FIQ (8-9) mask bits. + */ + if (!(irqsrc & ARMADA_370_XP_INT_IRQ_FIQ_MASK(cpuid))) + continue; + + if (irqn == 1) { + armada_370_xp_handle_msi_irq(NULL, true); + continue; + } + cascade_irq = irq_find_mapping(armada_370_xp_mpic_domain, irqn); generic_handle_irq(cascade_irq); } From 191252837626fca0de694c18bb2aa64c118eda89 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Wed, 29 Oct 2014 09:07:30 +0100 Subject: [PATCH 072/371] USB: kobil_sct: fix non-atomic allocation in write path Write may be called from interrupt context so make sure to use GFP_ATOMIC for all allocations in write. Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2") Cc: stable Signed-off-by: Johan Hovold --- drivers/usb/serial/kobil_sct.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/usb/serial/kobil_sct.c b/drivers/usb/serial/kobil_sct.c index 3d2bd65df0fc..02c420af251e 100644 --- a/drivers/usb/serial/kobil_sct.c +++ b/drivers/usb/serial/kobil_sct.c @@ -335,7 +335,8 @@ static int kobil_write(struct tty_struct *tty, struct usb_serial_port *port, port->interrupt_out_urb->transfer_buffer_length = length; priv->cur_pos = priv->cur_pos + length; - result = usb_submit_urb(port->interrupt_out_urb, GFP_NOIO); + result = usb_submit_urb(port->interrupt_out_urb, + GFP_ATOMIC); dev_dbg(&port->dev, "%s - Send write URB returns: %i\n", __func__, result); todo = priv->filled - priv->cur_pos; @@ -350,7 +351,7 @@ static int kobil_write(struct tty_struct *tty, struct usb_serial_port *port, if (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID || priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID) { result = usb_submit_urb(port->interrupt_in_urb, - GFP_NOIO); + GFP_ATOMIC); dev_dbg(&port->dev, "%s - Send read URB returns: %i\n", __func__, result); } } From e681286de221af78fc85db9222b6a203148c005a Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Wed, 29 Oct 2014 09:07:31 +0100 Subject: [PATCH 073/371] USB: opticon: fix non-atomic allocation in write path Write may be called from interrupt context so make sure to use GFP_ATOMIC for all allocations in write. Fixes: 0d930e51cfe6 ("USB: opticon: Add Opticon OPN2001 write support") Cc: stable Signed-off-by: Johan Hovold --- drivers/usb/serial/opticon.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/usb/serial/opticon.c b/drivers/usb/serial/opticon.c index 4856fb7e637e..4b7bfb394a32 100644 --- a/drivers/usb/serial/opticon.c +++ b/drivers/usb/serial/opticon.c @@ -215,7 +215,7 @@ static int opticon_write(struct tty_struct *tty, struct usb_serial_port *port, /* The connected devices do not have a bulk write endpoint, * to transmit data to de barcode device the control endpoint is used */ - dr = kmalloc(sizeof(struct usb_ctrlrequest), GFP_NOIO); + dr = kmalloc(sizeof(struct usb_ctrlrequest), GFP_ATOMIC); if (!dr) { count = -ENOMEM; goto error_no_dr; From f7ceb0dfec43d2d4e2373d02968f8fb58c6858f7 Mon Sep 17 00:00:00 2001 From: Sebastian Ott Date: Tue, 28 Oct 2014 16:39:12 +0100 Subject: [PATCH 074/371] KVM: s390: virtio_ccw: remove unused variable MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Fix this warning: drivers/s390/kvm/virtio_ccw.c: In function ‘virtio_ccw_int_handler’: drivers/s390/kvm/virtio_ccw.c:891:24: warning: unused variable ‘drv’ [-Wunused-variable] struct virtio_driver *drv; Signed-off-by: Sebastian Ott Acked-by: Cornelia Huck Acked-by: Michael S. Tsirkin Acked-by: Rusty Russell Signed-off-by: Cornelia Huck --- drivers/s390/kvm/virtio_ccw.c | 1 - 1 file changed, 1 deletion(-) diff --git a/drivers/s390/kvm/virtio_ccw.c b/drivers/s390/kvm/virtio_ccw.c index 6cbe6ef3c889..bda52f18e967 100644 --- a/drivers/s390/kvm/virtio_ccw.c +++ b/drivers/s390/kvm/virtio_ccw.c @@ -888,7 +888,6 @@ static void virtio_ccw_int_handler(struct ccw_device *cdev, struct virtio_ccw_device *vcdev = dev_get_drvdata(&cdev->dev); int i; struct virtqueue *vq; - struct virtio_driver *drv; if (!vcdev) return; From 4cdd32b4ba101ae07331f2058b20d7ce0ecc4961 Mon Sep 17 00:00:00 2001 From: Zhangfei Gao Date: Fri, 10 Oct 2014 03:53:47 -0300 Subject: [PATCH 075/371] [media] ir-hix5hd2 fix build warning Change CONFIG_PM to CONFIG_PM_SLEEP to solve warning: 'hix5hd2_ir_suspend' & 'hix5hd2_ir_resume' defined but not used Signed-off-by: Zhangfei Gao Signed-off-by: Mauro Carvalho Chehab --- drivers/media/rc/ir-hix5hd2.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/media/rc/ir-hix5hd2.c b/drivers/media/rc/ir-hix5hd2.c index 08bbd4f508cd..b0df62961c14 100644 --- a/drivers/media/rc/ir-hix5hd2.c +++ b/drivers/media/rc/ir-hix5hd2.c @@ -297,7 +297,7 @@ static int hix5hd2_ir_remove(struct platform_device *pdev) return 0; } -#ifdef CONFIG_PM +#ifdef CONFIG_PM_SLEEP static int hix5hd2_ir_suspend(struct device *dev) { struct hix5hd2_ir_priv *priv = dev_get_drvdata(dev); From d358aefdc0cc92b16ced449f998dbad639db6809 Mon Sep 17 00:00:00 2001 From: Ulrich Eckhardt Date: Fri, 10 Oct 2014 13:27:32 -0300 Subject: [PATCH 076/371] [media] imon: fix other RC type protocol support With kernel 3.17 the imon remote control for device 15c2:0034 does not work anymore, which uses the OTHER protocol. Only the front panel buttons which uses the RC6 protocol are working. Adds the missing comparison for the RC_BIT_OTHER. Cc: stable@vger.kernel.org # for Kernel 3.17 Signed-off-by: Ulrich Eckhardt Signed-off-by: Mauro Carvalho Chehab --- drivers/media/rc/imon.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/media/rc/imon.c b/drivers/media/rc/imon.c index b8837dd39bb2..65f80b8b9f7a 100644 --- a/drivers/media/rc/imon.c +++ b/drivers/media/rc/imon.c @@ -1678,7 +1678,8 @@ static void imon_incoming_packet(struct imon_context *ictx, if (press_type == 0) rc_keyup(ictx->rdev); else { - if (ictx->rc_type == RC_BIT_RC6_MCE) + if (ictx->rc_type == RC_BIT_RC6_MCE || + ictx->rc_type == RC_BIT_OTHER) rc_keydown(ictx->rdev, ictx->rc_type == RC_BIT_RC6_MCE ? RC_TYPE_RC6_MCE : RC_TYPE_OTHER, ictx->rc_scancode, ictx->rc_toggle); From fa51ee1085d6f2fa344d4ba64faadc9c6db0a3f1 Mon Sep 17 00:00:00 2001 From: Adel Gadllah Date: Fri, 31 Oct 2014 18:11:25 +0100 Subject: [PATCH 077/371] HID: usbhid: enable always-poll quirk for Elan Touchscreen 0103 Yet another device that needs this quirk. Reported-by: Tanguy de Baritault Signed-off-by: Adel Gadllah Signed-off-by: Jiri Kosina --- drivers/hid/hid-ids.h | 1 + drivers/hid/usbhid/hid-quirks.c | 1 + 2 files changed, 2 insertions(+) diff --git a/drivers/hid/hid-ids.h b/drivers/hid/hid-ids.h index e23ab8b30626..7c863738e419 100644 --- a/drivers/hid/hid-ids.h +++ b/drivers/hid/hid-ids.h @@ -299,6 +299,7 @@ #define USB_VENDOR_ID_ELAN 0x04f3 #define USB_DEVICE_ID_ELAN_TOUCHSCREEN 0x0089 #define USB_DEVICE_ID_ELAN_TOUCHSCREEN_009B 0x009b +#define USB_DEVICE_ID_ELAN_TOUCHSCREEN_0103 0x0103 #define USB_DEVICE_ID_ELAN_TOUCHSCREEN_016F 0x016f #define USB_VENDOR_ID_ELECOM 0x056e diff --git a/drivers/hid/usbhid/hid-quirks.c b/drivers/hid/usbhid/hid-quirks.c index 5014bb567b29..552671ee7c5d 100644 --- a/drivers/hid/usbhid/hid-quirks.c +++ b/drivers/hid/usbhid/hid-quirks.c @@ -72,6 +72,7 @@ static const struct hid_blacklist { { USB_VENDOR_ID_DMI, USB_DEVICE_ID_DMI_ENC, HID_QUIRK_NOGET }, { USB_VENDOR_ID_ELAN, USB_DEVICE_ID_ELAN_TOUCHSCREEN, HID_QUIRK_ALWAYS_POLL }, { USB_VENDOR_ID_ELAN, USB_DEVICE_ID_ELAN_TOUCHSCREEN_009B, HID_QUIRK_ALWAYS_POLL }, + { USB_VENDOR_ID_ELAN, USB_DEVICE_ID_ELAN_TOUCHSCREEN_0103, HID_QUIRK_ALWAYS_POLL }, { USB_VENDOR_ID_ELAN, USB_DEVICE_ID_ELAN_TOUCHSCREEN_016F, HID_QUIRK_ALWAYS_POLL }, { USB_VENDOR_ID_ELO, USB_DEVICE_ID_ELO_TS2700, HID_QUIRK_NOGET }, { USB_VENDOR_ID_FORMOSA, USB_DEVICE_ID_FORMOSA_IR_RECEIVER, HID_QUIRK_NO_INIT_REPORTS }, From b8fff407a180286aa683d543d878d98d9fc57b13 Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Mon, 3 Nov 2014 13:57:46 +0100 Subject: [PATCH 078/371] mac80211: fix use-after-free in defragmentation Upon receiving the last fragment, all but the first fragment are freed, but the multicast check for statistics at the end of the function refers to the current skb (the last fragment) causing a use-after-free bug. Since multicast frames cannot be fragmented and we check for this early in the function, just modify that check to also do the accounting to fix the issue. Cc: stable@vger.kernel.org Reported-by: Yosef Khyal Signed-off-by: Johannes Berg --- net/mac80211/rx.c | 14 +++++++------- 1 file changed, 7 insertions(+), 7 deletions(-) diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c index b04ca4049c95..a37f9af634cb 100644 --- a/net/mac80211/rx.c +++ b/net/mac80211/rx.c @@ -1678,11 +1678,14 @@ ieee80211_rx_h_defragment(struct ieee80211_rx_data *rx) sc = le16_to_cpu(hdr->seq_ctrl); frag = sc & IEEE80211_SCTL_FRAG; - if (likely((!ieee80211_has_morefrags(fc) && frag == 0) || - is_multicast_ether_addr(hdr->addr1))) { - /* not fragmented */ + if (likely(!ieee80211_has_morefrags(fc) && frag == 0)) + goto out; + + if (is_multicast_ether_addr(hdr->addr1)) { + rx->local->dot11MulticastReceivedFrameCount++; goto out; } + I802_DEBUG_INC(rx->local->rx_handlers_fragments); if (skb_linearize(rx->skb)) @@ -1775,10 +1778,7 @@ ieee80211_rx_h_defragment(struct ieee80211_rx_data *rx) out: if (rx->sta) rx->sta->rx_packets++; - if (is_multicast_ether_addr(hdr->addr1)) - rx->local->dot11MulticastReceivedFrameCount++; - else - ieee80211_led_rx(rx->local); + ieee80211_led_rx(rx->local); return RX_CONTINUE; } From 31b8b343e019e0a0c57ca9c13520a87f9cab884b Mon Sep 17 00:00:00 2001 From: Emmanuel Grumbach Date: Sun, 2 Nov 2014 15:48:09 +0200 Subject: [PATCH 079/371] iwlwifi: fix RFkill while calibrating If the RFkill interrupt fires while we calibrate, it would make the firmware fail and the driver wasn't able to recover. Change the flow so that the driver will kill the firmware in that case. Since we have now two flows that are calling trans_stop_device (the RFkill interrupt and the op_mode_mvm_start function) - we need to better sync this. Use the STATUS_DEVICE_ENABLED in the pcie transport in an atomic way to achieve this. This fixes: https://bugzilla.kernel.org/show_bug.cgi?id=86231 CC: [3.10+] Reviewed-by: Johannes Berg Reviewed-by: Luciano Coelho Signed-off-by: Emmanuel Grumbach --- drivers/net/wireless/iwlwifi/mvm/fw.c | 10 +++++++++- drivers/net/wireless/iwlwifi/mvm/mac80211.c | 1 + drivers/net/wireless/iwlwifi/mvm/mvm.h | 1 + drivers/net/wireless/iwlwifi/mvm/ops.c | 11 ++++++++++- drivers/net/wireless/iwlwifi/pcie/trans.c | 4 ++-- 5 files changed, 23 insertions(+), 4 deletions(-) diff --git a/drivers/net/wireless/iwlwifi/mvm/fw.c b/drivers/net/wireless/iwlwifi/mvm/fw.c index e0d9f19650b0..eb03943f8463 100644 --- a/drivers/net/wireless/iwlwifi/mvm/fw.c +++ b/drivers/net/wireless/iwlwifi/mvm/fw.c @@ -284,7 +284,7 @@ int iwl_run_init_mvm_ucode(struct iwl_mvm *mvm, bool read_nvm) lockdep_assert_held(&mvm->mutex); - if (WARN_ON_ONCE(mvm->init_ucode_complete)) + if (WARN_ON_ONCE(mvm->init_ucode_complete || mvm->calibrating)) return 0; iwl_init_notification_wait(&mvm->notif_wait, @@ -334,6 +334,8 @@ int iwl_run_init_mvm_ucode(struct iwl_mvm *mvm, bool read_nvm) goto out; } + mvm->calibrating = true; + /* Send TX valid antennas before triggering calibrations */ ret = iwl_send_tx_ant_cfg(mvm, mvm->fw->valid_tx_ant); if (ret) @@ -358,11 +360,17 @@ int iwl_run_init_mvm_ucode(struct iwl_mvm *mvm, bool read_nvm) MVM_UCODE_CALIB_TIMEOUT); if (!ret) mvm->init_ucode_complete = true; + + if (ret && iwl_mvm_is_radio_killed(mvm)) { + IWL_DEBUG_RF_KILL(mvm, "RFKILL while calibrating.\n"); + ret = 1; + } goto out; error: iwl_remove_notification(&mvm->notif_wait, &calib_wait); out: + mvm->calibrating = false; if (iwlmvm_mod_params.init_dbg && !mvm->nvm_data) { /* we want to debug INIT and we have no NVM - fake */ mvm->nvm_data = kzalloc(sizeof(struct iwl_nvm_data) + diff --git a/drivers/net/wireless/iwlwifi/mvm/mac80211.c b/drivers/net/wireless/iwlwifi/mvm/mac80211.c index 585fe5b7100f..b62405865b25 100644 --- a/drivers/net/wireless/iwlwifi/mvm/mac80211.c +++ b/drivers/net/wireless/iwlwifi/mvm/mac80211.c @@ -788,6 +788,7 @@ static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm) mvm->scan_status = IWL_MVM_SCAN_NONE; mvm->ps_disabled = false; + mvm->calibrating = false; /* just in case one was running */ ieee80211_remain_on_channel_expired(mvm->hw); diff --git a/drivers/net/wireless/iwlwifi/mvm/mvm.h b/drivers/net/wireless/iwlwifi/mvm/mvm.h index b153ced7015b..845429c88cf4 100644 --- a/drivers/net/wireless/iwlwifi/mvm/mvm.h +++ b/drivers/net/wireless/iwlwifi/mvm/mvm.h @@ -548,6 +548,7 @@ struct iwl_mvm { enum iwl_ucode_type cur_ucode; bool ucode_loaded; bool init_ucode_complete; + bool calibrating; u32 error_event_table; u32 log_event_table; u32 umac_error_event_table; diff --git a/drivers/net/wireless/iwlwifi/mvm/ops.c b/drivers/net/wireless/iwlwifi/mvm/ops.c index 27fb0a1ef274..5b719ee8e789 100644 --- a/drivers/net/wireless/iwlwifi/mvm/ops.c +++ b/drivers/net/wireless/iwlwifi/mvm/ops.c @@ -753,6 +753,7 @@ void iwl_mvm_set_hw_ctkill_state(struct iwl_mvm *mvm, bool state) static bool iwl_mvm_set_hw_rfkill_state(struct iwl_op_mode *op_mode, bool state) { struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); + bool calibrating = ACCESS_ONCE(mvm->calibrating); if (state) set_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status); @@ -761,7 +762,15 @@ static bool iwl_mvm_set_hw_rfkill_state(struct iwl_op_mode *op_mode, bool state) wiphy_rfkill_set_hw_state(mvm->hw->wiphy, iwl_mvm_is_radio_killed(mvm)); - return state && mvm->cur_ucode != IWL_UCODE_INIT; + /* iwl_run_init_mvm_ucode is waiting for results, abort it */ + if (calibrating) + iwl_abort_notification_waits(&mvm->notif_wait); + + /* + * Stop the device if we run OPERATIONAL firmware or if we are in the + * middle of the calibrations. + */ + return state && (mvm->cur_ucode != IWL_UCODE_INIT || calibrating); } static void iwl_mvm_free_skb(struct iwl_op_mode *op_mode, struct sk_buff *skb) diff --git a/drivers/net/wireless/iwlwifi/pcie/trans.c b/drivers/net/wireless/iwlwifi/pcie/trans.c index 3781b029e54a..160c3ebc48d0 100644 --- a/drivers/net/wireless/iwlwifi/pcie/trans.c +++ b/drivers/net/wireless/iwlwifi/pcie/trans.c @@ -915,7 +915,8 @@ static void iwl_trans_pcie_stop_device(struct iwl_trans *trans) * restart. So don't process again if the device is * already dead. */ - if (test_bit(STATUS_DEVICE_ENABLED, &trans->status)) { + if (test_and_clear_bit(STATUS_DEVICE_ENABLED, &trans->status)) { + IWL_DEBUG_INFO(trans, "DEVICE_ENABLED bit was set and is now cleared\n"); iwl_pcie_tx_stop(trans); iwl_pcie_rx_stop(trans); @@ -945,7 +946,6 @@ static void iwl_trans_pcie_stop_device(struct iwl_trans *trans) /* clear all status bits */ clear_bit(STATUS_SYNC_HCMD_ACTIVE, &trans->status); clear_bit(STATUS_INT_ENABLED, &trans->status); - clear_bit(STATUS_DEVICE_ENABLED, &trans->status); clear_bit(STATUS_TPOWER_PMI, &trans->status); clear_bit(STATUS_RFKILL, &trans->status); From ca0c37a0b489bb14bf3e1549e7a8d0c9a17f4919 Mon Sep 17 00:00:00 2001 From: Krzysztof Kozlowski Date: Mon, 3 Nov 2014 15:07:05 +0100 Subject: [PATCH 080/371] regulator: max77693: Fix use of uninitialized regulator config Driver allocated on stack struct regulator_config but didn't initialize it fully. Few fields (driver_data, ena_gpio) were left untouched. This lead to using random ena_gpio values as GPIOs for max77693 regulators. On occasion these values could match real GPIO numbers leading to interfering with other drivers and to unsuccessful enable/disable of regulator. Signed-off-by: Krzysztof Kozlowski Fixes: 80b022e29bfd ("regulator: max77693: Add max77693 regualtor driver.") Cc: Signed-off-by: Mark Brown --- drivers/regulator/max77693.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/regulator/max77693.c b/drivers/regulator/max77693.c index c67ff05fc1dd..d158f71fa128 100644 --- a/drivers/regulator/max77693.c +++ b/drivers/regulator/max77693.c @@ -227,7 +227,7 @@ static int max77693_pmic_probe(struct platform_device *pdev) struct max77693_dev *iodev = dev_get_drvdata(pdev->dev.parent); struct max77693_regulator_data *rdata = NULL; int num_rdata, i; - struct regulator_config config; + struct regulator_config config = { }; num_rdata = max77693_pmic_init_rdata(&pdev->dev, &rdata); if (!rdata || num_rdata <= 0) { From d83aef13adfd893694be3f9b7decf167f963aa08 Mon Sep 17 00:00:00 2001 From: Javier Martinez Canillas Date: Mon, 3 Nov 2014 15:40:40 +0100 Subject: [PATCH 081/371] regulator: max1586: zero-initialize regulator match table array The struct of_regulator_match rmatch[] is declared as a non-static local variable so the structure members are not auto-initialized. Initialize the array at declaration time to avoid the structure members values to be indeterminate and have sane defaults instead. Signed-off-by: Javier Martinez Canillas Signed-off-by: Mark Brown --- drivers/regulator/max1586.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/regulator/max1586.c b/drivers/regulator/max1586.c index 86db310d5304..d2a8c64cae42 100644 --- a/drivers/regulator/max1586.c +++ b/drivers/regulator/max1586.c @@ -163,7 +163,7 @@ static int of_get_max1586_platform_data(struct device *dev, struct max1586_platform_data *pdata) { struct max1586_subdev_data *sub; - struct of_regulator_match rmatch[ARRAY_SIZE(max1586_reg)]; + struct of_regulator_match rmatch[ARRAY_SIZE(max1586_reg)] = { }; struct device_node *np = dev->of_node; int i, matched; From 050cf85c3f3913fa6cf678bd059a9e0e4c7621e5 Mon Sep 17 00:00:00 2001 From: Javier Martinez Canillas Date: Mon, 3 Nov 2014 15:40:41 +0100 Subject: [PATCH 082/371] regulator: max77686: zero-initialize regulator match table The struct of_regulator_match is declared as a non-static local variable so the structure members are not auto-initialized. Initialize the struct at declaration time to avoid the structure members values to be indeterminate and have sane defaults instead. Signed-off-by: Javier Martinez Canillas Signed-off-by: Mark Brown --- drivers/regulator/max77686.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/regulator/max77686.c b/drivers/regulator/max77686.c index ef1af2debbd2..f69320e1738f 100644 --- a/drivers/regulator/max77686.c +++ b/drivers/regulator/max77686.c @@ -395,7 +395,7 @@ static int max77686_pmic_dt_parse_pdata(struct platform_device *pdev, struct max77686_dev *iodev = dev_get_drvdata(pdev->dev.parent); struct device_node *pmic_np, *regulators_np; struct max77686_regulator_data *rdata; - struct of_regulator_match rmatch; + struct of_regulator_match rmatch = { }; unsigned int i; pmic_np = iodev->dev->of_node; From ecea7484d2f76da1ce1eacdc7c25df08dab6fe78 Mon Sep 17 00:00:00 2001 From: Javier Martinez Canillas Date: Mon, 3 Nov 2014 15:40:42 +0100 Subject: [PATCH 083/371] regulator: max77802: zero-initialize regulator match table The struct of_regulator_match is declared as a non-static local variable so the structure members are not auto-initialized. Initialize the struct at declaration time to avoid the structure members values to be indeterminate and have sane defaults instead. Signed-off-by: Javier Martinez Canillas Signed-off-by: Mark Brown --- drivers/regulator/max77802.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/regulator/max77802.c b/drivers/regulator/max77802.c index d89792b084e9..45fa240fe243 100644 --- a/drivers/regulator/max77802.c +++ b/drivers/regulator/max77802.c @@ -454,7 +454,7 @@ static int max77802_pmic_dt_parse_pdata(struct platform_device *pdev, struct max77686_dev *iodev = dev_get_drvdata(pdev->dev.parent); struct device_node *pmic_np, *regulators_np; struct max77686_regulator_data *rdata; - struct of_regulator_match rmatch; + struct of_regulator_match rmatch = { }; unsigned int i; pmic_np = iodev->dev->of_node; From c9889803e3ba635d4517cb9e366218c9895f8d24 Mon Sep 17 00:00:00 2001 From: Javier Martinez Canillas Date: Mon, 3 Nov 2014 15:40:43 +0100 Subject: [PATCH 084/371] regulator: max8660: zero-initialize regulator match table array The struct of_regulator_match rmatch[] is declared as a non-static local variable so the structure members are not auto-initialized. Initialize the array at declaration time to avoid the structure members values to be indeterminate and have sane defaults instead. Signed-off-by: Javier Martinez Canillas Signed-off-by: Mark Brown --- drivers/regulator/max8660.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/regulator/max8660.c b/drivers/regulator/max8660.c index 2fc411188794..7eee2ca18541 100644 --- a/drivers/regulator/max8660.c +++ b/drivers/regulator/max8660.c @@ -335,7 +335,7 @@ static int max8660_pdata_from_dt(struct device *dev, int matched, i; struct device_node *np; struct max8660_subdev_data *sub; - struct of_regulator_match rmatch[ARRAY_SIZE(max8660_reg)]; + struct of_regulator_match rmatch[ARRAY_SIZE(max8660_reg)] = { }; np = of_get_child_by_name(dev->of_node, "regulators"); if (!np) { From 282179105d5403d991d2510ec74d1031695b3ef0 Mon Sep 17 00:00:00 2001 From: Javier Martinez Canillas Date: Mon, 3 Nov 2014 15:40:44 +0100 Subject: [PATCH 085/371] regulator: s2mpa01: zero-initialize regulator match table array The struct of_regulator_match rmatch[] is declared as a non-static local variable so the structure members are not auto-initialized. Initialize the array at declaration time to avoid the structure members values to be indeterminate and have sane defaults instead. Signed-off-by: Javier Martinez Canillas Signed-off-by: Mark Brown --- drivers/regulator/s2mpa01.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/regulator/s2mpa01.c b/drivers/regulator/s2mpa01.c index 4acefa6b462e..7633b9bfbe6e 100644 --- a/drivers/regulator/s2mpa01.c +++ b/drivers/regulator/s2mpa01.c @@ -341,7 +341,7 @@ static int s2mpa01_pmic_probe(struct platform_device *pdev) { struct sec_pmic_dev *iodev = dev_get_drvdata(pdev->dev.parent); struct sec_platform_data *pdata = dev_get_platdata(iodev->dev); - struct of_regulator_match rdata[S2MPA01_REGULATOR_MAX]; + struct of_regulator_match rdata[S2MPA01_REGULATOR_MAX] = { }; struct device_node *reg_np = NULL; struct regulator_config config = { }; struct s2mpa01_info *s2mpa01; From cba63cf8f92952211eb13376cda6c05679d675d2 Mon Sep 17 00:00:00 2001 From: Hans Verkuil Date: Mon, 3 Nov 2014 07:42:09 -0300 Subject: [PATCH 086/371] [media] vivid: default to single planar device instances The default used to be that the first vivid device instance was single planar, the second multi planar, the third single planar, etc. However, that turned out to be unexpected and awkward. Change the driver to always default to single planar. Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- Documentation/video4linux/vivid.txt | 12 +++++------- drivers/media/platform/vivid/vivid-core.c | 11 +++-------- 2 files changed, 8 insertions(+), 15 deletions(-) diff --git a/Documentation/video4linux/vivid.txt b/Documentation/video4linux/vivid.txt index eeb11a28e4fc..e5a940e3d304 100644 --- a/Documentation/video4linux/vivid.txt +++ b/Documentation/video4linux/vivid.txt @@ -221,12 +221,11 @@ ccs_out_mode: specify the allowed video output crop/compose/scaling combination key, not quality. multiplanar: select whether each device instance supports multi-planar formats, - and thus the V4L2 multi-planar API. By default the first device instance - is single-planar, the second multi-planar, and it keeps alternating. + and thus the V4L2 multi-planar API. By default device instances are + single-planar. This module option can override that for each instance. Values are: - 0: use alternating single and multi-planar devices. 1: this is a single-planar instance. 2: this is a multi-planar instance. @@ -975,9 +974,8 @@ is set, then the alpha component is only used for the color red and set to 0 otherwise. The driver has to be configured to support the multiplanar formats. By default -the first driver instance is single-planar, the second is multi-planar, and it -keeps alternating. This can be changed by setting the multiplanar module option, -see section 1 for more details on that option. +the driver instances are single-planar. This can be changed by setting the +multiplanar module option, see section 1 for more details on that option. If the driver instance is using the multiplanar formats/API, then the first single planar format (YUYV) and the multiplanar NV16M and NV61M formats the @@ -1021,7 +1019,7 @@ the output overlay for the video output, turn on video looping and capture to see the blended framebuffer overlay that's being written to by the second instance. This setup would require the following commands: - $ sudo modprobe vivid n_devs=2 node_types=0x10101,0x1 multiplanar=1,1 + $ sudo modprobe vivid n_devs=2 node_types=0x10101,0x1 $ v4l2-ctl -d1 --find-fb /dev/fb1 is the framebuffer associated with base address 0x12800000 $ sudo v4l2-ctl -d2 --set-fbuf fb=1 diff --git a/drivers/media/platform/vivid/vivid-core.c b/drivers/media/platform/vivid/vivid-core.c index 2c61a62ab48b..686c3c2ad05b 100644 --- a/drivers/media/platform/vivid/vivid-core.c +++ b/drivers/media/platform/vivid/vivid-core.c @@ -100,11 +100,9 @@ MODULE_PARM_DESC(ccs_out_mode, " output crop/compose/scale mode:\n" "\t\t bit 0=crop, 1=compose, 2=scale,\n" "\t\t -1=user-controlled (default)"); -static unsigned multiplanar[VIVID_MAX_DEVS]; +static unsigned multiplanar[VIVID_MAX_DEVS] = { [0 ... (VIVID_MAX_DEVS - 1)] = 1 }; module_param_array(multiplanar, uint, NULL, 0444); -MODULE_PARM_DESC(multiplanar, " 0 (default) is alternating single and multiplanar devices,\n" - "\t\t 1 is single planar devices,\n" - "\t\t 2 is multiplanar devices"); +MODULE_PARM_DESC(multiplanar, " 1 (default) creates a single planar device, 2 creates a multiplanar device."); /* Default: video + vbi-cap (raw and sliced) + radio rx + radio tx + sdr + vbi-out + vid-out */ static unsigned node_types[VIVID_MAX_DEVS] = { [0 ... (VIVID_MAX_DEVS - 1)] = 0x1d3d }; @@ -669,10 +667,7 @@ static int __init vivid_create_instance(int inst) /* start detecting feature set */ /* do we use single- or multi-planar? */ - if (multiplanar[inst] == 0) - dev->multiplanar = inst & 1; - else - dev->multiplanar = multiplanar[inst] > 1; + dev->multiplanar = multiplanar[inst] > 1; v4l2_info(&dev->v4l2_dev, "using %splanar format API\n", dev->multiplanar ? "multi" : "single "); From c1207c049b204b0a96535dc5416aee331b51e0e1 Mon Sep 17 00:00:00 2001 From: Guenter Roeck Date: Sun, 2 Nov 2014 18:19:15 -0800 Subject: [PATCH 087/371] netfilter: nft_reject_bridge: Fix powerpc build error Fix: net/bridge/netfilter/nft_reject_bridge.c: In function 'nft_reject_br_send_v6_unreach': net/bridge/netfilter/nft_reject_bridge.c:240:3: error: implicit declaration of function 'csum_ipv6_magic' csum_ipv6_magic(&nip6h->saddr, &nip6h->daddr, ^ make[3]: *** [net/bridge/netfilter/nft_reject_bridge.o] Error 1 Seen with powerpc:allmodconfig. Fixes: 523b929d5446 ("netfilter: nft_reject_bridge: don't use IP stack to reject traffic") Cc: Pablo Neira Ayuso Signed-off-by: Guenter Roeck Signed-off-by: David S. Miller --- net/bridge/netfilter/nft_reject_bridge.c | 1 + 1 file changed, 1 insertion(+) diff --git a/net/bridge/netfilter/nft_reject_bridge.c b/net/bridge/netfilter/nft_reject_bridge.c index 654c9018e3e7..48da2c54a69e 100644 --- a/net/bridge/netfilter/nft_reject_bridge.c +++ b/net/bridge/netfilter/nft_reject_bridge.c @@ -18,6 +18,7 @@ #include #include #include +#include #include #include "../br_private.h" From 7071cf7fc435ab84df872613f613a9a055964fc1 Mon Sep 17 00:00:00 2001 From: stephen hemminger Date: Sun, 2 Nov 2014 11:31:41 -0800 Subject: [PATCH 088/371] uapi: add missing network related headers to kbuild The makefile for sanitizing kernel headers uses the kbuild file to determine which files to do. Several networking related headers were missing. Without these headers iproute2 build would break. Signed-off-by: Stephen Hemminger Signed-off-by: David S. Miller --- include/uapi/linux/Kbuild | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/include/uapi/linux/Kbuild b/include/uapi/linux/Kbuild index b70237e8bc37..4c94f31a8c99 100644 --- a/include/uapi/linux/Kbuild +++ b/include/uapi/linux/Kbuild @@ -125,6 +125,7 @@ header-y += filter.h header-y += firewire-cdev.h header-y += firewire-constants.h header-y += flat.h +header-y += fou.h header-y += fs.h header-y += fsl_hypervisor.h header-y += fuse.h @@ -141,6 +142,7 @@ header-y += hid.h header-y += hiddev.h header-y += hidraw.h header-y += hpet.h +header-y += hsr_netlink.h header-y += hyperv.h header-y += hysdn_if.h header-y += i2c-dev.h @@ -251,6 +253,7 @@ header-y += mii.h header-y += minix_fs.h header-y += mman.h header-y += mmtimer.h +header-y += mpls.h header-y += mqueue.h header-y += mroute.h header-y += mroute6.h @@ -424,6 +427,7 @@ header-y += virtio_net.h header-y += virtio_pci.h header-y += virtio_ring.h header-y += virtio_rng.h +header=y += vm_sockets.h header-y += vt.h header-y += wait.h header-y += wanrouter.h From 906aaf5a195b59fbafc1a36d06be5a52894904fd Mon Sep 17 00:00:00 2001 From: Akihiro Tsukada Date: Fri, 31 Oct 2014 10:23:18 -0300 Subject: [PATCH 089/371] [media] dvb:tc90522: fix stats report * report the fixed per-transponder symbolrate instead of per-TS ones * add output TS-ID report Signed-off-by: Akihiro Tsukada Signed-off-by: Mauro Carvalho Chehab --- drivers/media/dvb-frontends/tc90522.c | 16 +++++++--------- 1 file changed, 7 insertions(+), 9 deletions(-) diff --git a/drivers/media/dvb-frontends/tc90522.c b/drivers/media/dvb-frontends/tc90522.c index d9905fb52f84..ad3351f233a1 100644 --- a/drivers/media/dvb-frontends/tc90522.c +++ b/drivers/media/dvb-frontends/tc90522.c @@ -216,32 +216,30 @@ static int tc90522s_get_frontend(struct dvb_frontend *fe) c->delivery_system = SYS_ISDBS; layers = 0; - ret = reg_read(state, 0xe8, val, 3); + ret = reg_read(state, 0xe6, val, 5); if (ret == 0) { - int slots; u8 v; + c->stream_id = val[0] << 8 | val[1]; + /* high/single layer */ - v = (val[0] & 0x70) >> 4; + v = (val[2] & 0x70) >> 4; c->modulation = (v == 7) ? PSK_8 : QPSK; c->fec_inner = fec_conv_sat[v]; c->layer[0].fec = c->fec_inner; c->layer[0].modulation = c->modulation; - c->layer[0].segment_count = val[1] & 0x3f; /* slots */ + c->layer[0].segment_count = val[3] & 0x3f; /* slots */ /* low layer */ - v = (val[0] & 0x07); + v = (val[2] & 0x07); c->layer[1].fec = fec_conv_sat[v]; if (v == 0) /* no low layer */ c->layer[1].segment_count = 0; else - c->layer[1].segment_count = val[2] & 0x3f; /* slots */ + c->layer[1].segment_count = val[4] & 0x3f; /* slots */ /* actually, BPSK if v==1, but not defined in fe_modulation_t */ c->layer[1].modulation = QPSK; layers = (v > 0) ? 2 : 1; - - slots = c->layer[0].segment_count + c->layer[1].segment_count; - c->symbol_rate = 28860000 * slots / 48; } /* statistics */ From 8e281fafda676df6f554a9074a28439039005418 Mon Sep 17 00:00:00 2001 From: Akihiro Tsukada Date: Fri, 31 Oct 2014 10:19:39 -0300 Subject: [PATCH 090/371] [media] dvb-core: set default properties of ISDB-S Signed-off-by: Akihiro Tsukada Signed-off-by: Mauro Carvalho Chehab --- drivers/media/dvb-core/dvb_frontend.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/media/dvb-core/dvb_frontend.c b/drivers/media/dvb-core/dvb_frontend.c index b8579ee68bd6..2cf30576bf39 100644 --- a/drivers/media/dvb-core/dvb_frontend.c +++ b/drivers/media/dvb-core/dvb_frontend.c @@ -962,6 +962,11 @@ static int dvb_frontend_clear_cache(struct dvb_frontend *fe) case SYS_ATSC: c->modulation = VSB_8; break; + case SYS_ISDBS: + c->symbol_rate = 28860000; + c->rolloff = ROLLOFF_35; + c->bandwidth_hz = c->symbol_rate / 100 * 135; + break; default: c->modulation = QAM_AUTO; break; @@ -2072,6 +2077,7 @@ static int dtv_set_frontend(struct dvb_frontend *fe) break; case SYS_DVBS: case SYS_TURBO: + case SYS_ISDBS: rolloff = 135; break; case SYS_DVBS2: From 01bd399a10eabddcc57ed489edcdd677a450119c Mon Sep 17 00:00:00 2001 From: Akihiro Tsukada Date: Fri, 31 Oct 2014 10:21:50 -0300 Subject: [PATCH 091/371] [media] dvb:tc90522: fix always-false expression Signed-off-by: Akihiro Tsukada Signed-off-by: Mauro Carvalho Chehab --- drivers/media/dvb-frontends/tc90522.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/media/dvb-frontends/tc90522.c b/drivers/media/dvb-frontends/tc90522.c index ad3351f233a1..b35d65c9cc05 100644 --- a/drivers/media/dvb-frontends/tc90522.c +++ b/drivers/media/dvb-frontends/tc90522.c @@ -361,7 +361,7 @@ static int tc90522t_get_frontend(struct dvb_frontend *fe) u8 v; c->isdbt_partial_reception = val[0] & 0x01; - c->isdbt_sb_mode = (val[0] & 0xc0) == 0x01; + c->isdbt_sb_mode = (val[0] & 0xc0) == 0x40; /* layer A */ v = (val[2] & 0x78) >> 3; From a8f9bfdf982e2b1fb9f094e4de9ab08c57f3d2fd Mon Sep 17 00:00:00 2001 From: Herbert Xu Date: Mon, 3 Nov 2014 04:30:13 +0800 Subject: [PATCH 092/371] tun: Fix csum_start with VLAN acceleration When VLAN acceleration is in use on the xmit path, we end up setting csum_start to the wrong place. The result is that the whoever ends up doing the checksum setting will corrupt the packet instead of writing the checksum to the expected location, usually this means writing the checksum with an offset of -4. This patch fixes this by adjusting csum_start when VLAN acceleration is detected. Fixes: 6680ec68eff4 ("tuntap: hardware vlan tx support") Cc: stable@vger.kernel.org Signed-off-by: Herbert Xu Signed-off-by: David S. Miller --- drivers/net/tun.c | 16 +++++++++------- 1 file changed, 9 insertions(+), 7 deletions(-) diff --git a/drivers/net/tun.c b/drivers/net/tun.c index 7302398f0b1f..57e6bf75a632 100644 --- a/drivers/net/tun.c +++ b/drivers/net/tun.c @@ -1235,6 +1235,10 @@ static ssize_t tun_put_user(struct tun_struct *tun, struct tun_pi pi = { 0, skb->protocol }; ssize_t total = 0; int vlan_offset = 0, copied; + int vlan_hlen = 0; + + if (vlan_tx_tag_present(skb)) + vlan_hlen = VLAN_HLEN; if (!(tun->flags & TUN_NO_PI)) { if ((len -= sizeof(pi)) < 0) @@ -1284,7 +1288,8 @@ static ssize_t tun_put_user(struct tun_struct *tun, if (skb->ip_summed == CHECKSUM_PARTIAL) { gso.flags = VIRTIO_NET_HDR_F_NEEDS_CSUM; - gso.csum_start = skb_checksum_start_offset(skb); + gso.csum_start = skb_checksum_start_offset(skb) + + vlan_hlen; gso.csum_offset = skb->csum_offset; } else if (skb->ip_summed == CHECKSUM_UNNECESSARY) { gso.flags = VIRTIO_NET_HDR_F_DATA_VALID; @@ -1297,10 +1302,9 @@ static ssize_t tun_put_user(struct tun_struct *tun, } copied = total; - total += skb->len; - if (!vlan_tx_tag_present(skb)) { - len = min_t(int, skb->len, len); - } else { + len = min_t(int, skb->len + vlan_hlen, len); + total += skb->len + vlan_hlen; + if (vlan_hlen) { int copy, ret; struct { __be16 h_vlan_proto; @@ -1311,8 +1315,6 @@ static ssize_t tun_put_user(struct tun_struct *tun, veth.h_vlan_TCI = htons(vlan_tx_tag_get(skb)); vlan_offset = offsetof(struct vlan_ethhdr, h_vlan_proto); - len = min_t(int, skb->len + VLAN_HLEN, len); - total += VLAN_HLEN; copy = min_t(int, vlan_offset, len); ret = skb_copy_datagram_const_iovec(skb, 0, iv, copied, copy); From 2eb783c43e7cf807a45899c10ed556b6dc116625 Mon Sep 17 00:00:00 2001 From: Herbert Xu Date: Mon, 3 Nov 2014 04:30:14 +0800 Subject: [PATCH 093/371] tun: Fix TUN_PKT_STRIP setting We set the flag TUN_PKT_STRIP if the user buffer provided is too small to contain the entire packet plus meta-data. However, this has been broken ever since we added GSO meta-data. VLAN acceleration also has the same problem. This patch fixes this by taking both into account when setting the TUN_PKT_STRIP flag. The fact that this has been broken for six years without anyone realising means that nobody actually uses this flag. Fixes: f43798c27684 ("tun: Allow GSO using virtio_net_hdr") Signed-off-by: Herbert Xu Signed-off-by: David S. Miller --- drivers/net/tun.c | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-) diff --git a/drivers/net/tun.c b/drivers/net/tun.c index 57e6bf75a632..9dd3746994a4 100644 --- a/drivers/net/tun.c +++ b/drivers/net/tun.c @@ -1236,15 +1236,19 @@ static ssize_t tun_put_user(struct tun_struct *tun, ssize_t total = 0; int vlan_offset = 0, copied; int vlan_hlen = 0; + int vnet_hdr_sz = 0; if (vlan_tx_tag_present(skb)) vlan_hlen = VLAN_HLEN; + if (tun->flags & TUN_VNET_HDR) + vnet_hdr_sz = tun->vnet_hdr_sz; + if (!(tun->flags & TUN_NO_PI)) { if ((len -= sizeof(pi)) < 0) return -EINVAL; - if (len < skb->len) { + if (len < skb->len + vlan_hlen + vnet_hdr_sz) { /* Packet will be striped */ pi.flags |= TUN_PKT_STRIP; } @@ -1254,9 +1258,9 @@ static ssize_t tun_put_user(struct tun_struct *tun, total += sizeof(pi); } - if (tun->flags & TUN_VNET_HDR) { + if (vnet_hdr_sz) { struct virtio_net_hdr gso = { 0 }; /* no info leak */ - if ((len -= tun->vnet_hdr_sz) < 0) + if ((len -= vnet_hdr_sz) < 0) return -EINVAL; if (skb_is_gso(skb)) { @@ -1298,7 +1302,7 @@ static ssize_t tun_put_user(struct tun_struct *tun, if (unlikely(memcpy_toiovecend(iv, (void *)&gso, total, sizeof(gso)))) return -EFAULT; - total += tun->vnet_hdr_sz; + total += vnet_hdr_sz; } copied = total; From f4c4a4e068a3f43b84bc1bcb9beb295dd5ff2529 Mon Sep 17 00:00:00 2001 From: Nimrod Andy Date: Mon, 3 Nov 2014 13:26:50 +0800 Subject: [PATCH 094/371] net: fec: fix suspend broken on multiple MACs sillicons On i.MX6SX sdb platform, there has two same enet MACs, after system up, just eth0 is up, and then do suspend/resume test: [ 50.437967] PM: Syncing filesystems ... done. [ 50.476924] Freezing user space processes ... (elapsed 0.005 seconds) done. [ 50.490093] Freezing remaining freezable tasks ... (elapsed 0.004 seconds) done. [ 50.559771] ------------[ cut here ]------------ [ 50.564453] WARNING: CPU: 0 PID: 575 at drivers/clk/clk.c:851 __clk_disable+0x60/0x6c() [ 50.572475] Modules linked in: [ 50.575578] CPU: 0 PID: 575 Comm: sh Not tainted 3.18.0-rc2-next-20141031-00007-gf61135b #21 [ 50.584031] Backtrace: [ 50.586550] [<80011ecc>] (dump_backtrace) from [<8001206c>] (show_stack+0x18/0x1c) [ 50.594136] r6:808a7a54 r5:00000000 r4:00000000 r3:00000000 [ 50.599920] [<80012054>] (show_stack) from [<806ab3c0>] (dump_stack+0x80/0x9c) [ 50.607187] [<806ab340>] (dump_stack) from [<8002a3e8>] (warn_slowpath_common+0x6c/0x8c) [ 50.615294] r5:00000353 r4:00000000 [ 50.618940] [<8002a37c>] (warn_slowpath_common) from [<8002a42c>] (warn_slowpath_null+0x24/0x2c) [ 50.627738] r8:00000000 r7:be144c44 r6:be015600 r5:80070013 r4:be015600 [ 50.634573] [<8002a408>] (warn_slowpath_null) from [<804f8d4c>] (__clk_disable+0x60/0x6c) [ 50.642777] [<804f8cec>] (__clk_disable) from [<804f8e5c>] (clk_disable+0x2c/0x38) [ 50.650359] r4:be015600 r3:00000000 [ 50.654006] [<804f8e30>] (clk_disable) from [<80420ab4>] (fec_enet_clk_enable+0xc4/0x258) [ 50.662196] r5:be3cb620 r4:be3cb000 [ 50.665838] [<804209f0>] (fec_enet_clk_enable) from [<80421178>] (fec_suspend+0x30/0x180) [ 50.674026] r7:be144c44 r6:be144c10 r5:8037f5a4 r4:be3cb000 [ 50.679802] [<80421148>] (fec_suspend) from [<8037f5d8>] (platform_pm_suspend+0x34/0x64) [ 50.687906] r10:00000000 r9:00000000 r8:00000000 r7:be144c44 r6:be144c10 r5:8037f5a4 [ 50.695852] r4:be144c10 r3:80421148 [ 50.699511] [<8037f5a4>] (platform_pm_suspend) from [<8038784c>] (dpm_run_callback.isra.14+0x34/0x6c) [ 50.708764] [<80387818>] (dpm_run_callback.isra.14) from [<80387f00>] (__device_suspend+0x12c/0x2a4) [ 50.717909] r9:8098ec8c r8:80973bec r6:00000002 r5:811c7038 r4:be144c10 [ 50.724746] [<80387dd4>] (__device_suspend) from [<803894fc>] (dpm_suspend+0x64/0x224) [ 50.732675] r8:80973bec r7:be144c10 r6:8098ec24 r5:811c7038 r4:be144cc4 [ 50.739509] [<80389498>] (dpm_suspend) from [<8038999c>] (dpm_suspend_start+0x60/0x68) [ 50.747438] r10:8082fa24 r9:00000000 r8:00000004 r7:00000003 r6:00000000 r5:8116ec80 [ 50.755386] r4:00000002 [ 50.757969] [<8038993c>] (dpm_suspend_start) from [<800679d8>] (suspend_devices_and_enter+0x90/0x3ec) [ 50.767202] r4:00000003 r3:8116eca0 [ 50.770843] [<80067948>] (suspend_devices_and_enter) from [<80067f40>] (pm_suspend+0x20c/0x2a4) [ 50.779553] r8:00000004 r7:00000003 r6:00000000 r5:8116ec8c r4:00000003 [ 50.786394] [<80067d34>] (pm_suspend) from [<80066858>] (state_store+0x70/0xc0) [ 50.793718] r6:8116ec90 r5:00000003 r4:bd88a800 r3:0000006d [ 50.799496] [<800667e8>] (state_store) from [<802b0384>] (kobj_attr_store+0x1c/0x28) [ 50.807251] r10:bd399f78 r8:00000000 r7:bd88a800 r6:bd88a800 r5:00000004 r4:bd085680 [ 50.815219] [<802b0368>] (kobj_attr_store) from [<80153090>] (sysfs_kf_write+0x54/0x58) [ 50.823252] [<8015303c>] (sysfs_kf_write) from [<80151fd8>] (kernfs_fop_write+0xd0/0x194) [ 50.831441] r6:00000004 r5:bd08568c r4:bd085680 r3:8015303c [ 50.837220] [<80151f08>] (kernfs_fop_write) from [<800eddb4>] (vfs_write+0xb8/0x1a8) [ 50.844975] r10:00000000 r9:00000000 r8:00000000 r7:bd399f78 r6:01336408 r5:00000004 [ 50.852924] r4:bc584dc0 [ 50.855505] [<800edcfc>] (vfs_write) from [<800ee0b8>] (SyS_write+0x48/0x88) [ 50.862567] r10:00000000 r8:00000000 r7:01336408 r6:00000004 r5:bc584dc0 r4:bc584dc0 [ 50.870537] [<800ee070>] (SyS_write) from [<8000eb00>] (ret_fast_syscall+0x0/0x48) [ 50.878120] r9:bd398000 r8:8000ecc4 r7:00000004 r6:76f42b48 r5:01336408 r4:00000004 [ 50.885983] ---[ end trace 7545115d752a316a ]--- [ 50.890765] ------------[ cut here ]------------ The root cause is that eth1 is not opened and clock is not enabled, and .suspend() still call .fec_enet_clk_enable() to disable clock. To avoid the broken, let it check network device up status by calling .netif_running() before disable/enable clocks. Signed-off-by: Fugang Duan Signed-off-by: David S. Miller --- drivers/net/ethernet/freescale/fec_main.c | 16 ++++++++-------- 1 file changed, 8 insertions(+), 8 deletions(-) diff --git a/drivers/net/ethernet/freescale/fec_main.c b/drivers/net/ethernet/freescale/fec_main.c index 50a851db2852..c27128de8dde 100644 --- a/drivers/net/ethernet/freescale/fec_main.c +++ b/drivers/net/ethernet/freescale/fec_main.c @@ -3343,12 +3343,11 @@ static int __maybe_unused fec_suspend(struct device *dev) netif_device_detach(ndev); netif_tx_unlock_bh(ndev); fec_stop(ndev); + fec_enet_clk_enable(ndev, false); + pinctrl_pm_select_sleep_state(&fep->pdev->dev); } rtnl_unlock(); - fec_enet_clk_enable(ndev, false); - pinctrl_pm_select_sleep_state(&fep->pdev->dev); - if (fep->reg_phy) regulator_disable(fep->reg_phy); @@ -3367,13 +3366,14 @@ static int __maybe_unused fec_resume(struct device *dev) return ret; } - pinctrl_pm_select_default_state(&fep->pdev->dev); - ret = fec_enet_clk_enable(ndev, true); - if (ret) - goto failed_clk; - rtnl_lock(); if (netif_running(ndev)) { + pinctrl_pm_select_default_state(&fep->pdev->dev); + ret = fec_enet_clk_enable(ndev, true); + if (ret) { + rtnl_unlock(); + goto failed_clk; + } fec_restart(ndev); netif_tx_lock_bh(ndev); netif_device_attach(ndev); From 3ce9b20f1971690b8b3b620e735ec99431573b39 Mon Sep 17 00:00:00 2001 From: Herbert Xu Date: Mon, 3 Nov 2014 14:01:25 +0800 Subject: [PATCH 095/371] macvtap: Fix csum_start when VLAN tags are present When VLAN is in use in macvtap_put_user, we end up setting csum_start to the wrong place. The result is that the whoever ends up doing the checksum setting will corrupt the packet instead of writing the checksum to the expected location, usually this means writing the checksum with an offset of -4. This patch fixes this by adjusting csum_start when VLAN tags are detected. Fixes: f09e2249c4f5 ("macvtap: restore vlan header on user read") Cc: stable@vger.kernel.org Signed-off-by: Herbert Xu Cheers, Signed-off-by: David S. Miller --- drivers/net/macvtap.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/net/macvtap.c b/drivers/net/macvtap.c index 6f226de655a4..880cc090dc44 100644 --- a/drivers/net/macvtap.c +++ b/drivers/net/macvtap.c @@ -629,6 +629,8 @@ static void macvtap_skb_to_vnet_hdr(const struct sk_buff *skb, if (skb->ip_summed == CHECKSUM_PARTIAL) { vnet_hdr->flags = VIRTIO_NET_HDR_F_NEEDS_CSUM; vnet_hdr->csum_start = skb_checksum_start_offset(skb); + if (vlan_tx_tag_present(skb)) + vnet_hdr->csum_start += VLAN_HLEN; vnet_hdr->csum_offset = skb->csum_offset; } else if (skb->ip_summed == CHECKSUM_UNNECESSARY) { vnet_hdr->flags = VIRTIO_NET_HDR_F_DATA_VALID; From 6c6151daaf2d8dc2046d9926539feed5f66bf74e Mon Sep 17 00:00:00 2001 From: Steffen Klassert Date: Mon, 3 Nov 2014 09:19:27 +0100 Subject: [PATCH 096/371] ip6_tunnel: Use ip6_tnl_dev_init as the ndo_init function. ip6_tnl_dev_init() sets the dev->iflink via a call to ip6_tnl_link_config(). After that, register_netdevice() sets dev->iflink = -1. So we loose the iflink configuration for ipv6 tunnels. Fix this by using ip6_tnl_dev_init() as the ndo_init function. Then ip6_tnl_dev_init() is called after dev->iflink is set to -1 from register_netdevice(). Signed-off-by: Steffen Klassert Signed-off-by: David S. Miller --- net/ipv6/ip6_tunnel.c | 10 +--------- 1 file changed, 1 insertion(+), 9 deletions(-) diff --git a/net/ipv6/ip6_tunnel.c b/net/ipv6/ip6_tunnel.c index 9409887fb664..9cb94cfa0ae7 100644 --- a/net/ipv6/ip6_tunnel.c +++ b/net/ipv6/ip6_tunnel.c @@ -272,9 +272,6 @@ static int ip6_tnl_create2(struct net_device *dev) int err; t = netdev_priv(dev); - err = ip6_tnl_dev_init(dev); - if (err < 0) - goto out; err = register_netdevice(dev); if (err < 0) @@ -1462,6 +1459,7 @@ ip6_tnl_change_mtu(struct net_device *dev, int new_mtu) static const struct net_device_ops ip6_tnl_netdev_ops = { + .ndo_init = ip6_tnl_dev_init, .ndo_uninit = ip6_tnl_dev_uninit, .ndo_start_xmit = ip6_tnl_xmit, .ndo_do_ioctl = ip6_tnl_ioctl, @@ -1546,16 +1544,10 @@ static int __net_init ip6_fb_tnl_dev_init(struct net_device *dev) struct ip6_tnl *t = netdev_priv(dev); struct net *net = dev_net(dev); struct ip6_tnl_net *ip6n = net_generic(net, ip6_tnl_net_id); - int err = ip6_tnl_dev_init_gen(dev); - - if (err) - return err; t->parms.proto = IPPROTO_IPV6; dev_hold(dev); - ip6_tnl_link_config(t); - rcu_assign_pointer(ip6n->tnls_wc[0], t); return 0; } From 16a0231bf7dc3fb37e9b1f1cb1a277dc220b5c5e Mon Sep 17 00:00:00 2001 From: Steffen Klassert Date: Mon, 3 Nov 2014 09:19:28 +0100 Subject: [PATCH 097/371] vti6: Use vti6_dev_init as the ndo_init function. vti6_dev_init() sets the dev->iflink via a call to vti6_link_config(). After that, register_netdevice() sets dev->iflink = -1. So we loose the iflink configuration for vti6 tunnels. Fix this by using vti6_dev_init() as the ndo_init function. Then vti6_dev_init() is called after dev->iflink is set to -1 from register_netdevice(). Signed-off-by: Steffen Klassert Signed-off-by: David S. Miller --- net/ipv6/ip6_vti.c | 11 +---------- 1 file changed, 1 insertion(+), 10 deletions(-) diff --git a/net/ipv6/ip6_vti.c b/net/ipv6/ip6_vti.c index d440bb585524..31089d153fd3 100644 --- a/net/ipv6/ip6_vti.c +++ b/net/ipv6/ip6_vti.c @@ -172,10 +172,6 @@ static int vti6_tnl_create2(struct net_device *dev) struct vti6_net *ip6n = net_generic(net, vti6_net_id); int err; - err = vti6_dev_init(dev); - if (err < 0) - goto out; - err = register_netdevice(dev); if (err < 0) goto out; @@ -783,6 +779,7 @@ static int vti6_change_mtu(struct net_device *dev, int new_mtu) } static const struct net_device_ops vti6_netdev_ops = { + .ndo_init = vti6_dev_init, .ndo_uninit = vti6_dev_uninit, .ndo_start_xmit = vti6_tnl_xmit, .ndo_do_ioctl = vti6_ioctl, @@ -852,16 +849,10 @@ static int __net_init vti6_fb_tnl_dev_init(struct net_device *dev) struct ip6_tnl *t = netdev_priv(dev); struct net *net = dev_net(dev); struct vti6_net *ip6n = net_generic(net, vti6_net_id); - int err = vti6_dev_init_gen(dev); - - if (err) - return err; t->parms.proto = IPPROTO_IPV6; dev_hold(dev); - vti6_link_config(t); - rcu_assign_pointer(ip6n->tnls_wc[0], t); return 0; } From ebe084aafb7e93adf210e80043c9f69adf56820d Mon Sep 17 00:00:00 2001 From: Steffen Klassert Date: Mon, 3 Nov 2014 09:19:29 +0100 Subject: [PATCH 098/371] sit: Use ipip6_tunnel_init as the ndo_init function. ipip6_tunnel_init() sets the dev->iflink via a call to ipip6_tunnel_bind_dev(). After that, register_netdevice() sets dev->iflink = -1. So we loose the iflink configuration for ipv6 tunnels. Fix this by using ipip6_tunnel_init() as the ndo_init function. Then ipip6_tunnel_init() is called after dev->iflink is set to -1 from register_netdevice(). Signed-off-by: Steffen Klassert Signed-off-by: David S. Miller --- net/ipv6/sit.c | 15 ++++++--------- 1 file changed, 6 insertions(+), 9 deletions(-) diff --git a/net/ipv6/sit.c b/net/ipv6/sit.c index 58e5b4710127..a24557a1c1d8 100644 --- a/net/ipv6/sit.c +++ b/net/ipv6/sit.c @@ -195,10 +195,8 @@ static int ipip6_tunnel_create(struct net_device *dev) struct sit_net *sitn = net_generic(net, sit_net_id); int err; - err = ipip6_tunnel_init(dev); - if (err < 0) - goto out; - ipip6_tunnel_clone_6rd(dev, sitn); + memcpy(dev->dev_addr, &t->parms.iph.saddr, 4); + memcpy(dev->broadcast, &t->parms.iph.daddr, 4); if ((__force u16)t->parms.i_flags & SIT_ISATAP) dev->priv_flags |= IFF_ISATAP; @@ -207,7 +205,8 @@ static int ipip6_tunnel_create(struct net_device *dev) if (err < 0) goto out; - strcpy(t->parms.name, dev->name); + ipip6_tunnel_clone_6rd(dev, sitn); + dev->rtnl_link_ops = &sit_link_ops; dev_hold(dev); @@ -1330,6 +1329,7 @@ static int ipip6_tunnel_change_mtu(struct net_device *dev, int new_mtu) } static const struct net_device_ops ipip6_netdev_ops = { + .ndo_init = ipip6_tunnel_init, .ndo_uninit = ipip6_tunnel_uninit, .ndo_start_xmit = sit_tunnel_xmit, .ndo_do_ioctl = ipip6_tunnel_ioctl, @@ -1378,9 +1378,7 @@ static int ipip6_tunnel_init(struct net_device *dev) tunnel->dev = dev; tunnel->net = dev_net(dev); - - memcpy(dev->dev_addr, &tunnel->parms.iph.saddr, 4); - memcpy(dev->broadcast, &tunnel->parms.iph.daddr, 4); + strcpy(tunnel->parms.name, dev->name); ipip6_tunnel_bind_dev(dev); dev->tstats = netdev_alloc_pcpu_stats(struct pcpu_sw_netstats); @@ -1405,7 +1403,6 @@ static int __net_init ipip6_fb_tunnel_init(struct net_device *dev) tunnel->dev = dev; tunnel->net = dev_net(dev); - strcpy(tunnel->parms.name, dev->name); iph->version = 4; iph->protocol = IPPROTO_IPV6; From f03eb128e3f4276f46442d14f3b8f864f3775821 Mon Sep 17 00:00:00 2001 From: Steffen Klassert Date: Mon, 3 Nov 2014 09:19:30 +0100 Subject: [PATCH 099/371] gre6: Move the setting of dev->iflink into the ndo_init functions. Otherwise it gets overwritten by register_netdev(). Signed-off-by: Steffen Klassert Signed-off-by: David S. Miller --- net/ipv6/ip6_gre.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/net/ipv6/ip6_gre.c b/net/ipv6/ip6_gre.c index 12c3c8ef3849..4564e1fca3eb 100644 --- a/net/ipv6/ip6_gre.c +++ b/net/ipv6/ip6_gre.c @@ -961,8 +961,6 @@ static void ip6gre_tnl_link_config(struct ip6_tnl *t, int set_mtu) else dev->flags &= ~IFF_POINTOPOINT; - dev->iflink = p->link; - /* Precalculate GRE options length */ if (t->parms.o_flags&(GRE_CSUM|GRE_KEY|GRE_SEQ)) { if (t->parms.o_flags&GRE_CSUM) @@ -1272,6 +1270,7 @@ static int ip6gre_tunnel_init(struct net_device *dev) u64_stats_init(&ip6gre_tunnel_stats->syncp); } + dev->iflink = tunnel->parms.link; return 0; } @@ -1481,6 +1480,8 @@ static int ip6gre_tap_init(struct net_device *dev) if (!dev->tstats) return -ENOMEM; + dev->iflink = tunnel->parms.link; + return 0; } From 9fd3d3a4307283a1d85d9a383223055954b7135f Mon Sep 17 00:00:00 2001 From: Edward Cree Date: Mon, 3 Nov 2014 14:14:35 +0000 Subject: [PATCH 100/371] sfc: don't BUG_ON efx->max_channels == 0 in probe efx_ef10_probe() was BUGging out if the BAR2 size was 0. This is unnecessarily violent; instead we should just fail to probe the device. Kept a WARN_ON as this problem indicates a broken or misconfigured NIC. Signed-off-by: Edward Cree Signed-off-by: David S. Miller --- drivers/net/ethernet/sfc/ef10.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/net/ethernet/sfc/ef10.c b/drivers/net/ethernet/sfc/ef10.c index 002d4cdc319f..a77f05ce8325 100644 --- a/drivers/net/ethernet/sfc/ef10.c +++ b/drivers/net/ethernet/sfc/ef10.c @@ -180,7 +180,8 @@ static int efx_ef10_probe(struct efx_nic *efx) EFX_MAX_CHANNELS, resource_size(&efx->pci_dev->resource[EFX_MEM_BAR]) / (EFX_VI_PAGE_SIZE * EFX_TXQ_TYPES)); - BUG_ON(efx->max_channels == 0); + if (WARN_ON(efx->max_channels == 0)) + return -EIO; nic_data = kzalloc(sizeof(*nic_data), GFP_KERNEL); if (!nic_data) From 167921cb0ff2bdbf25138dad799fec88c99ed316 Mon Sep 17 00:00:00 2001 From: Fengguang Wu Date: Mon, 3 Nov 2014 16:43:32 -0300 Subject: [PATCH 101/371] [media] sp2: sp2_init() can be static drivers/media/dvb-frontends/sp2.c:269:5: sparse: symbol 'sp2_init' was not declared. Should it be static? drivers/media/dvb-frontends/sp2.c:351:5: sparse: symbol 'sp2_exit' was not declared. Should it be static? Signed-off-by: Fengguang Wu Signed-off-by: Mauro Carvalho Chehab --- drivers/media/dvb-frontends/sp2.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/media/dvb-frontends/sp2.c b/drivers/media/dvb-frontends/sp2.c index 9b684d5c8f91..15bf4318cb74 100644 --- a/drivers/media/dvb-frontends/sp2.c +++ b/drivers/media/dvb-frontends/sp2.c @@ -266,7 +266,7 @@ int sp2_ci_poll_slot_status(struct dvb_ca_en50221 *en50221, return s->status; } -int sp2_init(struct sp2 *s) +static int sp2_init(struct sp2 *s) { int ret = 0; u8 buf; @@ -348,7 +348,7 @@ err: return ret; } -int sp2_exit(struct i2c_client *client) +static int sp2_exit(struct i2c_client *client) { struct sp2 *s; From 9c5c6ed7b5078ba42b1c769a1c29b3ae4a6bee36 Mon Sep 17 00:00:00 2001 From: Benjamin Tissoires Date: Mon, 3 Nov 2014 15:33:32 -0500 Subject: [PATCH 102/371] HID: core: cleanup .claimed field on disconnect When a subdriver is rmmod-ed then re-insmod-ed, the hid device is not destroyed as it is owned by the transport layer. So when we re-probed the device, the hid device is assumed to be already claimed, and can lead to page faults if hid-core tries to forward the emitted data to the to-be-created claimed node. Signed-off-by: Benjamin Tissoires Signed-off-by: Jiri Kosina --- drivers/hid/hid-core.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c index 73bd9e2e42bc..3402033fa52a 100644 --- a/drivers/hid/hid-core.c +++ b/drivers/hid/hid-core.c @@ -1659,6 +1659,7 @@ void hid_disconnect(struct hid_device *hdev) hdev->hiddev_disconnect(hdev); if (hdev->claimed & HID_CLAIMED_HIDRAW) hidraw_disconnect(hdev); + hdev->claimed = 0; } EXPORT_SYMBOL_GPL(hid_disconnect); From cf84a691a61606a2e7269907d3727e2d9fa148ee Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Mon, 27 Oct 2014 18:34:33 +0100 Subject: [PATCH 103/371] USB: cdc-acm: add device id for GW Instek AFG-2225 Add device-id entry for GW Instek AFG-2225, which has a byte swapped bInterfaceSubClass (0x20). Reported-by: Karl Palsson Cc: stable Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/class/cdc-acm.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c index e934e19f49f5..959343b891c7 100644 --- a/drivers/usb/class/cdc-acm.c +++ b/drivers/usb/class/cdc-acm.c @@ -1681,6 +1681,7 @@ static const struct usb_device_id acm_ids[] = { { USB_DEVICE(0x0572, 0x1328), /* Shiro / Aztech USB MODEM UM-3100 */ .driver_info = NO_UNION_NORMAL, /* has no union descriptor */ }, + { USB_DEVICE(0x2184, 0x001c) }, /* GW Instek AFG-2225 */ { USB_DEVICE(0x22b8, 0x6425), /* Motorola MOTOMAGX phones */ }, /* Motorola H24 HSPA module: */ From 24cb4502c97b0c9bed90aae0225adb92088783d3 Mon Sep 17 00:00:00 2001 From: Jim Paris Date: Thu, 30 Oct 2014 11:04:47 -0400 Subject: [PATCH 104/371] cdc-acm: ensure that termios get set when the port is activated The driver wasn't properly configuring the hardware for the current termios settings under all conditions. Ensure that termios are written to the device when the port is activated. Signed-off-by: Jim Paris Reviewed-by: Johan Hovold Acked-by: Oliver Neukum Signed-off-by: Greg Kroah-Hartman --- drivers/usb/class/cdc-acm.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c index 959343b891c7..6771f884cb82 100644 --- a/drivers/usb/class/cdc-acm.c +++ b/drivers/usb/class/cdc-acm.c @@ -60,6 +60,9 @@ static struct acm *acm_table[ACM_TTY_MINORS]; static DEFINE_MUTEX(acm_table_lock); +static void acm_tty_set_termios(struct tty_struct *tty, + struct ktermios *termios_old); + /* * acm_table accessors */ @@ -554,6 +557,8 @@ static int acm_port_activate(struct tty_port *port, struct tty_struct *tty) goto error_submit_urb; } + acm_tty_set_termios(tty, NULL); + /* * Unthrottle device in case the TTY was closed while throttled. */ From 90a646c770c50cc206ceba0d7b50453c46c13c36 Mon Sep 17 00:00:00 2001 From: Hans de Goede Date: Wed, 1 Oct 2014 11:29:14 +0200 Subject: [PATCH 105/371] usb: Do not allow usb_alloc_streams on unconfigured devices This commit fixes the following oops: [10238.622067] scsi host3: uas_eh_bus_reset_handler start [10240.766164] usb 3-4: reset SuperSpeed USB device number 3 using xhci_hcd [10245.779365] usb 3-4: device descriptor read/8, error -110 [10245.883331] usb 3-4: reset SuperSpeed USB device number 3 using xhci_hcd [10250.897603] usb 3-4: device descriptor read/8, error -110 [10251.058200] BUG: unable to handle kernel NULL pointer dereference at 0000000000000040 [10251.058244] IP: [] xhci_check_streams_endpoint+0x91/0x140 [10251.059473] Call Trace: [10251.059487] [] xhci_calculate_streams_and_bitmask+0xbc/0x130 [10251.059520] [] xhci_alloc_streams+0x10f/0x5a0 [10251.059548] [] ? check_preempt_curr+0x75/0xa0 [10251.059575] [] ? ttwu_do_wakeup+0x2c/0x100 [10251.059601] [] ? ttwu_do_activate.constprop.111+0x66/0x70 [10251.059635] [] usb_alloc_streams+0xab/0xf0 [10251.059662] [] uas_configure_endpoints+0x128/0x150 [uas] [10251.059694] [] uas_post_reset+0x3c/0xb0 [uas] [10251.059722] [] usb_reset_device+0x1b9/0x2a0 [10251.059749] [] uas_eh_bus_reset_handler+0xb2/0x190 [uas] [10251.059781] [] scsi_try_bus_reset+0x53/0x110 [10251.059808] [] scsi_eh_bus_reset+0xf7/0x270 The problem is the following call sequence (simplified): 1) usb_reset_device 2) usb_reset_and_verify_device 2) hub_port_init 3) hub_port_finish_reset 3) xhci_discover_or_reset_device This frees xhci->devs[slot_id]->eps[ep_index].ring for all eps but 0 4) usb_get_device_descriptor This fails 5) hub_port_init fails 6) usb_reset_and_verify_device fails, does not restore device config 7) uas_post_reset 8) xhci_alloc_streams NULL deref on the free-ed ring This commit fixes this by not allowing usb_alloc_streams to continue if the device is not configured. Note that we do allow usb_free_streams to continue after a (logical) disconnect, as it is necessary to explicitly free the streams at the xhci controller level. Cc: stable@vger.kernel.org Signed-off-by: Hans de Goede Acked-by: Alan Stern Signed-off-by: Greg Kroah-Hartman --- drivers/usb/core/hcd.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c index b84fb141e122..a6efb4184f2b 100644 --- a/drivers/usb/core/hcd.c +++ b/drivers/usb/core/hcd.c @@ -2060,6 +2060,8 @@ int usb_alloc_streams(struct usb_interface *interface, return -EINVAL; if (dev->speed != USB_SPEED_SUPER) return -EINVAL; + if (dev->state < USB_STATE_CONFIGURED) + return -ENODEV; for (i = 0; i < num_eps; i++) { /* Streams only apply to bulk endpoints. */ From 93c9bf4d1838d5851a18ca398b0ad66397f05056 Mon Sep 17 00:00:00 2001 From: Alan Stern Date: Fri, 31 Oct 2014 14:49:47 -0400 Subject: [PATCH 106/371] usb-storage: handle a skipped data phase Sometimes mass-storage devices using the Bulk-only transport will mistakenly skip the data phase of a command. Rather than sending the data expected by the host or sending a zero-length packet, they go directly to the status phase and send the CSW. This causes problems for usb-storage, for obvious reasons. The driver will interpret the CSW as a short data transfer and will wait to receive a CSW. The device won't have anything left to send, so the command eventually times out. The SCSI layer doesn't retry commands after they time out (this is a relatively recent change). Therefore we should do our best to detect a skipped data phase and handle it promptly. This patch adds code to do that. If usb-storage receives a short 13-byte data transfer from the device, and if the first four bytes of the data match the CSW signature, the driver will set the residue to the full transfer length and interpret the data as a CSW. This fixes Bugzilla #86611. Signed-off-by: Alan Stern CC: Matthew Dharm Tested-by: Paul Osmialowski CC: Signed-off-by: Greg Kroah-Hartman --- drivers/usb/storage/transport.c | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+) diff --git a/drivers/usb/storage/transport.c b/drivers/usb/storage/transport.c index 22c7d4360fa2..b1d815eb6d0b 100644 --- a/drivers/usb/storage/transport.c +++ b/drivers/usb/storage/transport.c @@ -1118,6 +1118,31 @@ int usb_stor_Bulk_transport(struct scsi_cmnd *srb, struct us_data *us) */ if (result == USB_STOR_XFER_LONG) fake_sense = 1; + + /* + * Sometimes a device will mistakenly skip the data phase + * and go directly to the status phase without sending a + * zero-length packet. If we get a 13-byte response here, + * check whether it really is a CSW. + */ + if (result == USB_STOR_XFER_SHORT && + srb->sc_data_direction == DMA_FROM_DEVICE && + transfer_length - scsi_get_resid(srb) == + US_BULK_CS_WRAP_LEN) { + struct scatterlist *sg = NULL; + unsigned int offset = 0; + + if (usb_stor_access_xfer_buf((unsigned char *) bcs, + US_BULK_CS_WRAP_LEN, srb, &sg, + &offset, FROM_XFER_BUF) == + US_BULK_CS_WRAP_LEN && + bcs->Signature == + cpu_to_le32(US_BULK_CS_SIGN)) { + usb_stor_dbg(us, "Device skipped data phase\n"); + scsi_set_resid(srb, transfer_length); + goto skipped_data_phase; + } + } } /* See flow chart on pg 15 of the Bulk Only Transport spec for @@ -1153,6 +1178,7 @@ int usb_stor_Bulk_transport(struct scsi_cmnd *srb, struct us_data *us) if (result != USB_STOR_XFER_GOOD) return USB_STOR_TRANSPORT_ERROR; + skipped_data_phase: /* check bulk status */ residue = le32_to_cpu(bcs->Residue); usb_stor_dbg(us, "Bulk Status S 0x%x T 0x%x R %u Stat 0x%x\n", From aee0ce3ae73c566ace9958302e001d3cbbb0a623 Mon Sep 17 00:00:00 2001 From: Hans de Goede Date: Fri, 31 Oct 2014 14:37:32 +0100 Subject: [PATCH 107/371] uas: Add US_FL_NO_ATA_1X quirk for 1 more Seagate model These drives hang when receiving ATA12 commands, so set the US_FL_NO_ATA_1X quirk to filter these out. Cc: stable@vger.kernel.org # 3.16 Signed-off-by: Hans de Goede Signed-off-by: Greg Kroah-Hartman --- drivers/usb/storage/unusual_uas.h | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/usb/storage/unusual_uas.h b/drivers/usb/storage/unusual_uas.h index 8511b54a65d9..d57e138567a0 100644 --- a/drivers/usb/storage/unusual_uas.h +++ b/drivers/usb/storage/unusual_uas.h @@ -61,6 +61,13 @@ UNUSUAL_DEV(0x0bc2, 0xab20, 0x0000, 0x9999, USB_SC_DEVICE, USB_PR_DEVICE, NULL, US_FL_NO_ATA_1X), +/* https://bbs.archlinux.org/viewtopic.php?id=183190 */ +UNUSUAL_DEV(0x0bc2, 0xab21, 0x0000, 0x9999, + "Seagate", + "Backup+ BK", + USB_SC_DEVICE, USB_PR_DEVICE, NULL, + US_FL_NO_ATA_1X), + /* Reported-by: Claudio Bizzarri */ UNUSUAL_DEV(0x152d, 0x0567, 0x0000, 0x9999, "JMicron", From cee2448e5b412ea109e92be12cd504df28ab1e0f Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Wed, 29 Oct 2014 11:46:11 +0300 Subject: [PATCH 108/371] USB: HWA: fix a warning message We wanted to print the version as (major).(minor) but because the shift operation is higher precedence than the mask then we print (minor).(minor). Signed-off-by: Dan Carpenter Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/hwa-hc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/usb/host/hwa-hc.c b/drivers/usb/host/hwa-hc.c index d0d8fadf7066..1db0626c8bf4 100644 --- a/drivers/usb/host/hwa-hc.c +++ b/drivers/usb/host/hwa-hc.c @@ -607,7 +607,7 @@ found: wa->wa_descr = wa_descr = (struct usb_wa_descriptor *) hdr; if (le16_to_cpu(wa_descr->bcdWAVersion) > 0x0100) dev_warn(dev, "Wire Adapter v%d.%d newer than groked v1.0\n", - le16_to_cpu(wa_descr->bcdWAVersion) & 0xff00 >> 8, + (le16_to_cpu(wa_descr->bcdWAVersion) & 0xff00) >> 8, le16_to_cpu(wa_descr->bcdWAVersion) & 0x00ff); result = 0; error: From 2391eacbd00b706ff4902db7dbee21e33b6f1850 Mon Sep 17 00:00:00 2001 From: Hans de Goede Date: Tue, 28 Oct 2014 11:05:29 +0100 Subject: [PATCH 109/371] xhci: Disable streams on Asmedia 1042 xhci controllers Streams seem to be broken on the Asmedia 1042. An uas capable Seagate disk which is known to work fine with other controllers causes the system to freeze when connected over usb-3 with this controller, where as it works fine with uas in usb-2 ports, indicating a problem with streams. This is a bit bigger hammer then I would like to use for this, but for now it will have to make do. I've ordered a pci-e usb controller card with an Asmedia 1042, once that arrives I'll try to get streams to work (with a quirk flag if necessary) and then we can re-enable them. For now this at least makes uas capable disk enclosures work again by forcing fallback to the usb-storage driver. Reported-by: Bogdan Mihalcea Cc: Bogdan Mihalcea Cc: stable@vger.kernel.org # 3.16 Signed-off-by: Hans de Goede Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/xhci-pci.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c index 280dde93abe5..2c7f3fb811d1 100644 --- a/drivers/usb/host/xhci-pci.c +++ b/drivers/usb/host/xhci-pci.c @@ -162,6 +162,10 @@ static void xhci_pci_quirks(struct device *dev, struct xhci_hcd *xhci) pdev->device == 0x3432) xhci->quirks |= XHCI_BROKEN_STREAMS; + if (pdev->vendor == PCI_VENDOR_ID_ASMEDIA && + pdev->device == 0x1042) + xhci->quirks |= XHCI_BROKEN_STREAMS; + if (xhci->quirks & XHCI_RESET_ON_RESUME) xhci_dbg_trace(xhci, trace_xhci_dbg_quirks, "QUIRK: Resetting on resume"); From 673029fe9c16c95600bdaca4760673527af32edf Mon Sep 17 00:00:00 2001 From: Hans de Goede Date: Thu, 9 Oct 2014 17:27:56 +0200 Subject: [PATCH 110/371] uas: Add NO_ATA_1X for VIA VL711 devices Just like some Seagate enclosures, these devices do not seem to grok ata pass through commands. Cc: stable@vger.kernel.org # 3.16 Signed-off-by: Hans de Goede Signed-off-by: Greg Kroah-Hartman --- drivers/usb/storage/unusual_uas.h | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/usb/storage/unusual_uas.h b/drivers/usb/storage/unusual_uas.h index d57e138567a0..ea793c1f3041 100644 --- a/drivers/usb/storage/unusual_uas.h +++ b/drivers/usb/storage/unusual_uas.h @@ -82,3 +82,10 @@ UNUSUAL_DEV(0x174c, 0x5106, 0x0000, 0x9999, "ASM1051", USB_SC_DEVICE, USB_PR_DEVICE, NULL, US_FL_IGNORE_UAS), + +/* Reported-by: Hans de Goede */ +UNUSUAL_DEV(0x2109, 0x0711, 0x0000, 0x9999, + "VIA", + "VL711", + USB_SC_DEVICE, USB_PR_DEVICE, NULL, + US_FL_NO_ATA_1X), From cd6e245a2d061a8367e37aaece32cf3fc922de80 Mon Sep 17 00:00:00 2001 From: Sylwester Nawrocki Date: Tue, 7 Oct 2014 11:12:07 +0200 Subject: [PATCH 111/371] usb: Remove references to non-existent PLAT_S5P symbol The PLAT_S5P Kconfig symbol was removed in commit d78c16ccde96 ("ARM: SAMSUNG: Remove remaining legacy code"). There are still some references left, fix that by replacing them with ARCH_S5PV210. Fixes: d78c16ccde96 ("ARM: SAMSUNG: Remove remaining legacy code") Reported-by: Paul Bolle Acked-by: Jingoo Han Signed-off-by: Sylwester Nawrocki Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/Kconfig | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig index a8a30b1d4167..a3ca1375dd52 100644 --- a/drivers/usb/host/Kconfig +++ b/drivers/usb/host/Kconfig @@ -234,7 +234,7 @@ config USB_EHCI_SH config USB_EHCI_EXYNOS tristate "EHCI support for Samsung S5P/EXYNOS SoC Series" - depends on PLAT_S5P || ARCH_EXYNOS + depends on ARCH_S5PV210 || ARCH_EXYNOS help Enable support for the Samsung Exynos SOC's on-chip EHCI controller. @@ -550,7 +550,7 @@ config USB_OHCI_SH config USB_OHCI_EXYNOS tristate "OHCI support for Samsung S5P/EXYNOS SoC Series" - depends on PLAT_S5P || ARCH_EXYNOS + depends on ARCH_S5PV210 || ARCH_EXYNOS help Enable support for the Samsung Exynos SOC's on-chip OHCI controller. From ec5633ba677761b44ba94ae29c906ba79dd6eaa0 Mon Sep 17 00:00:00 2001 From: Luis Henriques Date: Thu, 2 Oct 2014 00:10:57 +0100 Subject: [PATCH 112/371] usb: storage: fix build warnings !CONFIG_PM Functions fw5895_init() and config_autodelink_before_power_down() are used only when CONFIG_PM is defined. drivers/usb/storage/realtek_cr.c:699:13: warning: 'fw5895_init' defined but not used [-Wunused-function] drivers/usb/storage/realtek_cr.c:629:12: warning: 'config_autodelink_before_power_down' defined but not used [-Wunused-function] Signed-off-by: Luis Henriques Signed-off-by: Greg Kroah-Hartman --- drivers/usb/storage/realtek_cr.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/usb/storage/realtek_cr.c b/drivers/usb/storage/realtek_cr.c index 8591d89a38e6..27e4a580d2ed 100644 --- a/drivers/usb/storage/realtek_cr.c +++ b/drivers/usb/storage/realtek_cr.c @@ -626,6 +626,7 @@ static int config_autodelink_after_power_on(struct us_data *us) return 0; } +#ifdef CONFIG_PM static int config_autodelink_before_power_down(struct us_data *us) { struct rts51x_chip *chip = (struct rts51x_chip *)(us->extra); @@ -716,6 +717,7 @@ static void fw5895_init(struct us_data *us) } } } +#endif #ifdef CONFIG_REALTEK_AUTOPM static void fw5895_set_mmc_wp(struct us_data *us) From 2e069232fd470175068cbd6eaf8879ef47d772f8 Mon Sep 17 00:00:00 2001 From: Mark Einon Date: Sun, 19 Oct 2014 20:25:26 +0100 Subject: [PATCH 113/371] MAINTAINERS: Remove duplicate entry for usbip driver The usbip driver was moved out of staging in 3.17-rc3 but the MAINTAINERS file still has the old staging entry as well as the new one. Remove the old entry. Signed-off-by: Mark Einon Signed-off-by: Greg Kroah-Hartman --- MAINTAINERS | 5 ----- 1 file changed, 5 deletions(-) diff --git a/MAINTAINERS b/MAINTAINERS index 3c6427190be2..22d0bb08127f 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -9703,11 +9703,6 @@ S: Maintained F: Documentation/hid/hiddev.txt F: drivers/hid/usbhid/ -USB/IP DRIVERS -L: linux-usb@vger.kernel.org -S: Orphan -F: drivers/staging/usbip/ - USB ISP116X DRIVER M: Olav Kongas L: linux-usb@vger.kernel.org From 876af5d454548be40327ba9efea4bc92a8575019 Mon Sep 17 00:00:00 2001 From: Adel Gadllah Date: Thu, 9 Oct 2014 09:29:29 +0200 Subject: [PATCH 114/371] USB: quirks: enable device-qualifier quirk for another Elan touchscreen Currently this quirk is enabled for the model with the device id 0x0089, it is needed for the 0x009b model, which is found on the Fujitsu Lifebook u904 as well. Signed-off-by: Adel Gadllah Cc: stable Signed-off-by: Greg Kroah-Hartman --- drivers/usb/core/quirks.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/usb/core/quirks.c b/drivers/usb/core/quirks.c index 5ae883dc21f5..d1080ed3608c 100644 --- a/drivers/usb/core/quirks.c +++ b/drivers/usb/core/quirks.c @@ -97,6 +97,9 @@ static const struct usb_device_id usb_quirk_list[] = { { USB_DEVICE(0x04f3, 0x0089), .driver_info = USB_QUIRK_DEVICE_QUALIFIER }, + { USB_DEVICE(0x04f3, 0x009b), .driver_info = + USB_QUIRK_DEVICE_QUALIFIER }, + /* Roland SC-8820 */ { USB_DEVICE(0x0582, 0x0007), .driver_info = USB_QUIRK_RESET_RESUME }, From d749947561af5996ccc076b2ffcc5f48b1be5d74 Mon Sep 17 00:00:00 2001 From: Adel Gadllah Date: Thu, 9 Oct 2014 09:29:30 +0200 Subject: [PATCH 115/371] USB: quirks: enable device-qualifier quirk for yet another Elan touchscreen Yet another device affected by this. Tested-by: Kevin Fenzi Signed-off-by: Adel Gadllah Cc: stable Signed-off-by: Greg Kroah-Hartman --- drivers/usb/core/quirks.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/usb/core/quirks.c b/drivers/usb/core/quirks.c index d1080ed3608c..39b4081b632d 100644 --- a/drivers/usb/core/quirks.c +++ b/drivers/usb/core/quirks.c @@ -100,6 +100,9 @@ static const struct usb_device_id usb_quirk_list[] = { { USB_DEVICE(0x04f3, 0x009b), .driver_info = USB_QUIRK_DEVICE_QUALIFIER }, + { USB_DEVICE(0x04f3, 0x016f), .driver_info = + USB_QUIRK_DEVICE_QUALIFIER }, + /* Roland SC-8820 */ { USB_DEVICE(0x0582, 0x0007), .driver_info = USB_QUIRK_RESET_RESUME }, From b45abacde3d551c6696c6738bef4a1805d0bf27a Mon Sep 17 00:00:00 2001 From: Oliver Neukum Date: Mon, 27 Oct 2014 14:53:29 +0100 Subject: [PATCH 116/371] xhci: no switching back on non-ULT Haswell The switch back is limited to ULT even on HP. The contrary finding arose by bad luck in BIOS versions for testing. This fixes spontaneous resume from S3 on some HP laptops. Signed-off-by: Oliver Neukum Cc: stable Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/xhci-pci.c | 14 -------------- 1 file changed, 14 deletions(-) diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c index 2c7f3fb811d1..9a69b1f1b300 100644 --- a/drivers/usb/host/xhci-pci.c +++ b/drivers/usb/host/xhci-pci.c @@ -127,20 +127,6 @@ static void xhci_pci_quirks(struct device *dev, struct xhci_hcd *xhci) xhci->quirks |= XHCI_SPURIOUS_REBOOT; xhci->quirks |= XHCI_AVOID_BEI; } - if (pdev->vendor == PCI_VENDOR_ID_INTEL && - (pdev->device == PCI_DEVICE_ID_INTEL_LYNXPOINT_XHCI || - pdev->device == PCI_DEVICE_ID_INTEL_LYNXPOINT_LP_XHCI)) { - /* Workaround for occasional spurious wakeups from S5 (or - * any other sleep) on Haswell machines with LPT and LPT-LP - * with the new Intel BIOS - */ - /* Limit the quirk to only known vendors, as this triggers - * yet another BIOS bug on some other machines - * https://bugzilla.kernel.org/show_bug.cgi?id=66171 - */ - if (pdev->subsystem_vendor == PCI_VENDOR_ID_HP) - xhci->quirks |= XHCI_SPURIOUS_WAKEUP; - } if (pdev->vendor == PCI_VENDOR_ID_INTEL && pdev->device == PCI_DEVICE_ID_INTEL_LYNXPOINT_LP_XHCI) { xhci->quirks |= XHCI_SPURIOUS_REBOOT; From d1d9548256fbdf2e049d6413a5266c41e73658ee Mon Sep 17 00:00:00 2001 From: Hans de Goede Date: Thu, 23 Oct 2014 14:40:57 +0200 Subject: [PATCH 117/371] uas: Add US_FL_NO_ATA_1X quirk for 2 more Seagate models These drives hang when receiving ATA12 commands, so set the US_FL_NO_ATA_1X quirk to filter these out. Cc: stable@vger.kernel.org # 3.16 Signed-off-by: Hans de Goede Signed-off-by: Greg Kroah-Hartman --- drivers/usb/storage/unusual_uas.h | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/drivers/usb/storage/unusual_uas.h b/drivers/usb/storage/unusual_uas.h index ea793c1f3041..2fefaf923e4a 100644 --- a/drivers/usb/storage/unusual_uas.h +++ b/drivers/usb/storage/unusual_uas.h @@ -54,6 +54,20 @@ UNUSUAL_DEV(0x0bc2, 0x3312, 0x0000, 0x9999, USB_SC_DEVICE, USB_PR_DEVICE, NULL, US_FL_NO_ATA_1X), +/* Reported-by: Hans de Goede */ +UNUSUAL_DEV(0x0bc2, 0x3320, 0x0000, 0x9999, + "Seagate", + "Expansion Desk", + USB_SC_DEVICE, USB_PR_DEVICE, NULL, + US_FL_NO_ATA_1X), + +/* Reported-by: Bogdan Mihalcea */ +UNUSUAL_DEV(0x0bc2, 0xa003, 0x0000, 0x9999, + "Seagate", + "Backup Plus", + USB_SC_DEVICE, USB_PR_DEVICE, NULL, + US_FL_NO_ATA_1X), + /* https://bbs.archlinux.org/viewtopic.php?id=183190 */ UNUSUAL_DEV(0x0bc2, 0xab20, 0x0000, 0x9999, "Seagate", From 01ed67dc70834d00d62b6e754ee0f76301fbc140 Mon Sep 17 00:00:00 2001 From: Tony Zheng Date: Fri, 17 Oct 2014 19:43:02 +0800 Subject: [PATCH 118/371] usb: core: need to call usb_phy_notify_connect after device setup Since we notify disconnecting based on the usb device is existed (port_dev->child, the child device at roothub is not NULL), we need to notify connect after device has been registered. This fixes a bug that do fast plug in/out test, and the notify_disconnect is not called due to roothub child is NULL and the enumeration has failed. Cc: v3.17+ Signed-off-by: Tony Zheng Signed-off-by: Peter Chen Signed-off-by: Greg Kroah-Hartman --- drivers/usb/core/hub.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c index 11e80ac31324..65a8e5055885 100644 --- a/drivers/usb/core/hub.c +++ b/drivers/usb/core/hub.c @@ -4468,9 +4468,6 @@ hub_port_init (struct usb_hub *hub, struct usb_device *udev, int port1, if (retval) goto fail; - if (hcd->usb_phy && !hdev->parent) - usb_phy_notify_connect(hcd->usb_phy, udev->speed); - /* * Some superspeed devices have finished the link training process * and attached to a superspeed hub port, but the device descriptor @@ -4783,6 +4780,10 @@ static void hub_port_connect(struct usb_hub *hub, int port1, u16 portstatus, port_dev->child = NULL; spin_unlock_irq(&device_state_lock); mutex_unlock(&usb_port_peer_mutex); + } else { + if (hcd->usb_phy && !hdev->parent) + usb_phy_notify_connect(hcd->usb_phy, + udev->speed); } } From b2108f1e519e983e5dd5712b3a44f7366ab509e4 Mon Sep 17 00:00:00 2001 From: Peter Chen Date: Tue, 4 Nov 2014 11:14:31 +0800 Subject: [PATCH 119/371] usb: core: notify disconnection when core detects disconnect It is safe to call notify disconnect when the usb core thinks the device is disconnected. This commit also fixes one bug found at below situation: we have not enabled usb wakeup, we do system suspend when there is an usb device at the port, after suspend, we plug out the usb device, then plug in device again. At that time, the nofity disconnect was not called at current code, as the controller doesn't know the usb device was disconnected during the suspend, but USB core knows the port has changed during that periods. So to fix this problem, and let the usb core call notify disconnect. Cc: 3.17+ Signed-off-by: Peter Chen Signed-off-by: Greg Kroah-Hartman --- drivers/usb/core/hub.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c index 65a8e5055885..b649fef2e35d 100644 --- a/drivers/usb/core/hub.c +++ b/drivers/usb/core/hub.c @@ -4624,8 +4624,7 @@ static void hub_port_connect(struct usb_hub *hub, int port1, u16 portstatus, /* Disconnect any existing devices under this port */ if (udev) { - if (hcd->usb_phy && !hdev->parent && - !(portstatus & USB_PORT_STAT_CONNECTION)) + if (hcd->usb_phy && !hdev->parent) usb_phy_notify_disconnect(hcd->usb_phy, udev->speed); usb_disconnect(&port_dev->child); } From c72c553249bb73705f594e292a8f8750027fbcbe Mon Sep 17 00:00:00 2001 From: Stefan Agner Date: Mon, 27 Oct 2014 17:40:44 +0100 Subject: [PATCH 120/371] ARM: imx: clk-vf610: define PLL's clock tree So far, the required PLL's (PLL1/PLL2/PLL5) have been initialized by boot loader and the kernel code defined fixed rates according to those default configurations. Beginning with the USB PLL7 the code started to initialize the PLL's itself (using imx_clk_pllv3). However, since commit dc4805c2e78ba5a22ea1632f3e3e4ee601a1743b (ARM: imx: remove ENABLE and BYPASS bits from clk-pllv3 driver) imx_clk_pllv3 no longer takes care of the ENABLE and BYPASS bits, hence the USB PLL were not configured correctly anymore. This patch not only fixes those USB PLL's, but also makes use of the imx_clk_pllv3 for all PLL's and alignes the code with the PLL support of the i.MX6 series. Signed-off-by: Stefan Agner Signed-off-by: Shawn Guo --- arch/arm/mach-imx/clk-vf610.c | 128 ++++++++++++++++-------- include/dt-bindings/clock/vf610-clock.h | 39 ++++++-- 2 files changed, 120 insertions(+), 47 deletions(-) diff --git a/arch/arm/mach-imx/clk-vf610.c b/arch/arm/mach-imx/clk-vf610.c index a17818475050..409637254594 100644 --- a/arch/arm/mach-imx/clk-vf610.c +++ b/arch/arm/mach-imx/clk-vf610.c @@ -58,8 +58,14 @@ #define PFD_PLL1_BASE (anatop_base + 0x2b0) #define PFD_PLL2_BASE (anatop_base + 0x100) #define PFD_PLL3_BASE (anatop_base + 0xf0) +#define PLL1_CTRL (anatop_base + 0x270) +#define PLL2_CTRL (anatop_base + 0x30) #define PLL3_CTRL (anatop_base + 0x10) +#define PLL4_CTRL (anatop_base + 0x70) +#define PLL5_CTRL (anatop_base + 0xe0) +#define PLL6_CTRL (anatop_base + 0xa0) #define PLL7_CTRL (anatop_base + 0x20) +#define ANA_MISC1 (anatop_base + 0x160) static void __iomem *anatop_base; static void __iomem *ccm_base; @@ -67,25 +73,34 @@ static void __iomem *ccm_base; /* sources for multiplexer clocks, this is used multiple times */ static const char *fast_sels[] = { "firc", "fxosc", }; static const char *slow_sels[] = { "sirc_32k", "sxosc", }; -static const char *pll1_sels[] = { "pll1_main", "pll1_pfd1", "pll1_pfd2", "pll1_pfd3", "pll1_pfd4", }; -static const char *pll2_sels[] = { "pll2_main", "pll2_pfd1", "pll2_pfd2", "pll2_pfd3", "pll2_pfd4", }; -static const char *sys_sels[] = { "fast_clk_sel", "slow_clk_sel", "pll2_pfd_sel", "pll2_main", "pll1_pfd_sel", "pll3_main", }; +static const char *pll1_sels[] = { "pll1_sys", "pll1_pfd1", "pll1_pfd2", "pll1_pfd3", "pll1_pfd4", }; +static const char *pll2_sels[] = { "pll2_bus", "pll2_pfd1", "pll2_pfd2", "pll2_pfd3", "pll2_pfd4", }; +static const char *pll_bypass_src_sels[] = { "fast_clk_sel", "lvds1_in", }; +static const char *pll1_bypass_sels[] = { "pll1", "pll1_bypass_src", }; +static const char *pll2_bypass_sels[] = { "pll2", "pll2_bypass_src", }; +static const char *pll3_bypass_sels[] = { "pll3", "pll3_bypass_src", }; +static const char *pll4_bypass_sels[] = { "pll4", "pll4_bypass_src", }; +static const char *pll5_bypass_sels[] = { "pll5", "pll5_bypass_src", }; +static const char *pll6_bypass_sels[] = { "pll6", "pll6_bypass_src", }; +static const char *pll7_bypass_sels[] = { "pll7", "pll7_bypass_src", }; +static const char *sys_sels[] = { "fast_clk_sel", "slow_clk_sel", "pll2_pfd_sel", "pll2_bus", "pll1_pfd_sel", "pll3_usb_otg", }; static const char *ddr_sels[] = { "pll2_pfd2", "sys_sel", }; static const char *rmii_sels[] = { "enet_ext", "audio_ext", "enet_50m", "enet_25m", }; static const char *enet_ts_sels[] = { "enet_ext", "fxosc", "audio_ext", "usb", "enet_ts", "enet_25m", "enet_50m", }; -static const char *esai_sels[] = { "audio_ext", "mlb", "spdif_rx", "pll4_main_div", }; -static const char *sai_sels[] = { "audio_ext", "mlb", "spdif_rx", "pll4_main_div", }; +static const char *esai_sels[] = { "audio_ext", "mlb", "spdif_rx", "pll4_audio_div", }; +static const char *sai_sels[] = { "audio_ext", "mlb", "spdif_rx", "pll4_audio_div", }; static const char *nfc_sels[] = { "platform_bus", "pll1_pfd1", "pll3_pfd1", "pll3_pfd3", }; -static const char *qspi_sels[] = { "pll3_main", "pll3_pfd4", "pll2_pfd4", "pll1_pfd4", }; -static const char *esdhc_sels[] = { "pll3_main", "pll3_pfd3", "pll1_pfd3", "platform_bus", }; -static const char *dcu_sels[] = { "pll1_pfd2", "pll3_main", }; +static const char *qspi_sels[] = { "pll3_usb_otg", "pll3_pfd4", "pll2_pfd4", "pll1_pfd4", }; +static const char *esdhc_sels[] = { "pll3_usb_otg", "pll3_pfd3", "pll1_pfd3", "platform_bus", }; +static const char *dcu_sels[] = { "pll1_pfd2", "pll3_usb_otg", }; static const char *gpu_sels[] = { "pll2_pfd2", "pll3_pfd2", }; -static const char *vadc_sels[] = { "pll6_main_div", "pll3_main_div", "pll3_main", }; +static const char *vadc_sels[] = { "pll6_video_div", "pll3_usb_otg_div", "pll3_usb_otg", }; /* FTM counter clock source, not module clock */ static const char *ftm_ext_sels[] = {"sirc_128k", "sxosc", "fxosc_half", "audio_ext", }; static const char *ftm_fix_sels[] = { "sxosc", "ipg_bus", }; -static struct clk_div_table pll4_main_div_table[] = { + +static struct clk_div_table pll4_audio_div_table[] = { { .val = 0, .div = 1 }, { .val = 1, .div = 2 }, { .val = 2, .div = 6 }, @@ -120,6 +135,9 @@ static void __init vf610_clocks_init(struct device_node *ccm_node) clk[VF610_CLK_AUDIO_EXT] = imx_obtain_fixed_clock("audio_ext", 0); clk[VF610_CLK_ENET_EXT] = imx_obtain_fixed_clock("enet_ext", 0); + /* Clock source from external clock via LVDs PAD */ + clk[VF610_CLK_ANACLK1] = imx_obtain_fixed_clock("anaclk1", 0); + clk[VF610_CLK_FXOSC_HALF] = imx_clk_fixed_factor("fxosc_half", "fxosc", 1, 2); np = of_find_compatible_node(NULL, NULL, "fsl,vf610-anatop"); @@ -133,31 +151,63 @@ static void __init vf610_clocks_init(struct device_node *ccm_node) clk[VF610_CLK_SLOW_CLK_SEL] = imx_clk_mux("slow_clk_sel", CCM_CCSR, 4, 1, slow_sels, ARRAY_SIZE(slow_sels)); clk[VF610_CLK_FASK_CLK_SEL] = imx_clk_mux("fast_clk_sel", CCM_CCSR, 5, 1, fast_sels, ARRAY_SIZE(fast_sels)); - clk[VF610_CLK_PLL1_MAIN] = imx_clk_fixed_factor("pll1_main", "fast_clk_sel", 22, 1); - clk[VF610_CLK_PLL1_PFD1] = imx_clk_pfd("pll1_pfd1", "pll1_main", PFD_PLL1_BASE, 0); - clk[VF610_CLK_PLL1_PFD2] = imx_clk_pfd("pll1_pfd2", "pll1_main", PFD_PLL1_BASE, 1); - clk[VF610_CLK_PLL1_PFD3] = imx_clk_pfd("pll1_pfd3", "pll1_main", PFD_PLL1_BASE, 2); - clk[VF610_CLK_PLL1_PFD4] = imx_clk_pfd("pll1_pfd4", "pll1_main", PFD_PLL1_BASE, 3); + clk[VF610_CLK_PLL1_BYPASS_SRC] = imx_clk_mux("pll1_bypass_src", PLL1_CTRL, 14, 1, pll_bypass_src_sels, ARRAY_SIZE(pll_bypass_src_sels)); + clk[VF610_CLK_PLL2_BYPASS_SRC] = imx_clk_mux("pll2_bypass_src", PLL2_CTRL, 14, 1, pll_bypass_src_sels, ARRAY_SIZE(pll_bypass_src_sels)); + clk[VF610_CLK_PLL3_BYPASS_SRC] = imx_clk_mux("pll3_bypass_src", PLL3_CTRL, 14, 1, pll_bypass_src_sels, ARRAY_SIZE(pll_bypass_src_sels)); + clk[VF610_CLK_PLL4_BYPASS_SRC] = imx_clk_mux("pll4_bypass_src", PLL4_CTRL, 14, 1, pll_bypass_src_sels, ARRAY_SIZE(pll_bypass_src_sels)); + clk[VF610_CLK_PLL5_BYPASS_SRC] = imx_clk_mux("pll5_bypass_src", PLL5_CTRL, 14, 1, pll_bypass_src_sels, ARRAY_SIZE(pll_bypass_src_sels)); + clk[VF610_CLK_PLL6_BYPASS_SRC] = imx_clk_mux("pll6_bypass_src", PLL6_CTRL, 14, 1, pll_bypass_src_sels, ARRAY_SIZE(pll_bypass_src_sels)); + clk[VF610_CLK_PLL7_BYPASS_SRC] = imx_clk_mux("pll7_bypass_src", PLL7_CTRL, 14, 1, pll_bypass_src_sels, ARRAY_SIZE(pll_bypass_src_sels)); - clk[VF610_CLK_PLL2_MAIN] = imx_clk_fixed_factor("pll2_main", "fast_clk_sel", 22, 1); - clk[VF610_CLK_PLL2_PFD1] = imx_clk_pfd("pll2_pfd1", "pll2_main", PFD_PLL2_BASE, 0); - clk[VF610_CLK_PLL2_PFD2] = imx_clk_pfd("pll2_pfd2", "pll2_main", PFD_PLL2_BASE, 1); - clk[VF610_CLK_PLL2_PFD3] = imx_clk_pfd("pll2_pfd3", "pll2_main", PFD_PLL2_BASE, 2); - clk[VF610_CLK_PLL2_PFD4] = imx_clk_pfd("pll2_pfd4", "pll2_main", PFD_PLL2_BASE, 3); + clk[VF610_CLK_PLL1] = imx_clk_pllv3(IMX_PLLV3_GENERIC, "pll1", "pll1_bypass_src", PLL1_CTRL, 0x1); + clk[VF610_CLK_PLL2] = imx_clk_pllv3(IMX_PLLV3_GENERIC, "pll2", "pll2_bypass_src", PLL2_CTRL, 0x1); + clk[VF610_CLK_PLL3] = imx_clk_pllv3(IMX_PLLV3_USB, "pll3", "pll3_bypass_src", PLL3_CTRL, 0x1); + clk[VF610_CLK_PLL4] = imx_clk_pllv3(IMX_PLLV3_AV, "pll4", "pll4_bypass_src", PLL4_CTRL, 0x7f); + clk[VF610_CLK_PLL5] = imx_clk_pllv3(IMX_PLLV3_ENET, "pll5", "pll5_bypass_src", PLL5_CTRL, 0x3); + clk[VF610_CLK_PLL6] = imx_clk_pllv3(IMX_PLLV3_AV, "pll6", "pll6_bypass_src", PLL6_CTRL, 0x7f); + clk[VF610_CLK_PLL7] = imx_clk_pllv3(IMX_PLLV3_USB, "pll7", "pll7_bypass_src", PLL7_CTRL, 0x1); - clk[VF610_CLK_PLL3_MAIN] = imx_clk_fixed_factor("pll3_main", "fast_clk_sel", 20, 1); - clk[VF610_CLK_PLL3_PFD1] = imx_clk_pfd("pll3_pfd1", "pll3_main", PFD_PLL3_BASE, 0); - clk[VF610_CLK_PLL3_PFD2] = imx_clk_pfd("pll3_pfd2", "pll3_main", PFD_PLL3_BASE, 1); - clk[VF610_CLK_PLL3_PFD3] = imx_clk_pfd("pll3_pfd3", "pll3_main", PFD_PLL3_BASE, 2); - clk[VF610_CLK_PLL3_PFD4] = imx_clk_pfd("pll3_pfd4", "pll3_main", PFD_PLL3_BASE, 3); + clk[VF610_PLL1_BYPASS] = imx_clk_mux_flags("pll1_bypass", PLL1_CTRL, 16, 1, pll1_bypass_sels, ARRAY_SIZE(pll1_bypass_sels), CLK_SET_RATE_PARENT); + clk[VF610_PLL2_BYPASS] = imx_clk_mux_flags("pll2_bypass", PLL2_CTRL, 16, 1, pll2_bypass_sels, ARRAY_SIZE(pll2_bypass_sels), CLK_SET_RATE_PARENT); + clk[VF610_PLL3_BYPASS] = imx_clk_mux_flags("pll3_bypass", PLL3_CTRL, 16, 1, pll3_bypass_sels, ARRAY_SIZE(pll3_bypass_sels), CLK_SET_RATE_PARENT); + clk[VF610_PLL4_BYPASS] = imx_clk_mux_flags("pll4_bypass", PLL4_CTRL, 16, 1, pll4_bypass_sels, ARRAY_SIZE(pll4_bypass_sels), CLK_SET_RATE_PARENT); + clk[VF610_PLL5_BYPASS] = imx_clk_mux_flags("pll5_bypass", PLL5_CTRL, 16, 1, pll5_bypass_sels, ARRAY_SIZE(pll5_bypass_sels), CLK_SET_RATE_PARENT); + clk[VF610_PLL6_BYPASS] = imx_clk_mux_flags("pll6_bypass", PLL6_CTRL, 16, 1, pll6_bypass_sels, ARRAY_SIZE(pll6_bypass_sels), CLK_SET_RATE_PARENT); + clk[VF610_PLL7_BYPASS] = imx_clk_mux_flags("pll7_bypass", PLL7_CTRL, 16, 1, pll7_bypass_sels, ARRAY_SIZE(pll7_bypass_sels), CLK_SET_RATE_PARENT); - clk[VF610_CLK_PLL4_MAIN] = imx_clk_fixed_factor("pll4_main", "fast_clk_sel", 25, 1); - /* Enet pll: fixed 50Mhz */ - clk[VF610_CLK_PLL5_MAIN] = imx_clk_fixed_factor("pll5_main", "fast_clk_sel", 125, 6); - /* pll6: default 960Mhz */ - clk[VF610_CLK_PLL6_MAIN] = imx_clk_fixed_factor("pll6_main", "fast_clk_sel", 40, 1); - /* pll7: USB1 PLL at 480MHz */ - clk[VF610_CLK_PLL7_MAIN] = imx_clk_pllv3(IMX_PLLV3_USB, "pll7_main", "fast_clk_sel", PLL7_CTRL, 0x2); + /* Do not bypass PLLs initially */ + clk_set_parent(clk[VF610_PLL1_BYPASS], clk[VF610_CLK_PLL1]); + clk_set_parent(clk[VF610_PLL2_BYPASS], clk[VF610_CLK_PLL2]); + clk_set_parent(clk[VF610_PLL3_BYPASS], clk[VF610_CLK_PLL3]); + clk_set_parent(clk[VF610_PLL4_BYPASS], clk[VF610_CLK_PLL4]); + clk_set_parent(clk[VF610_PLL5_BYPASS], clk[VF610_CLK_PLL5]); + clk_set_parent(clk[VF610_PLL6_BYPASS], clk[VF610_CLK_PLL6]); + clk_set_parent(clk[VF610_PLL7_BYPASS], clk[VF610_CLK_PLL7]); + + clk[VF610_CLK_PLL1_SYS] = imx_clk_gate("pll1_sys", "pll1_bypass", PLL1_CTRL, 13); + clk[VF610_CLK_PLL2_BUS] = imx_clk_gate("pll2_bus", "pll2_bypass", PLL2_CTRL, 13); + clk[VF610_CLK_PLL3_USB_OTG] = imx_clk_gate("pll3_usb_otg", "pll3_bypass", PLL3_CTRL, 13); + clk[VF610_CLK_PLL4_AUDIO] = imx_clk_gate("pll4_audio", "pll4_bypass", PLL4_CTRL, 13); + clk[VF610_CLK_PLL5_ENET] = imx_clk_gate("pll5_enet", "pll5_bypass", PLL5_CTRL, 13); + clk[VF610_CLK_PLL6_VIDEO] = imx_clk_gate("pll6_video", "pll6_bypass", PLL6_CTRL, 13); + clk[VF610_CLK_PLL7_USB_HOST] = imx_clk_gate("pll7_usb_host", "pll7_bypass", PLL7_CTRL, 13); + + clk[VF610_CLK_LVDS1_IN] = imx_clk_gate_exclusive("lvds1_in", "anaclk1", ANA_MISC1, 12, BIT(10)); + + clk[VF610_CLK_PLL1_PFD1] = imx_clk_pfd("pll1_pfd1", "pll1_sys", PFD_PLL1_BASE, 0); + clk[VF610_CLK_PLL1_PFD2] = imx_clk_pfd("pll1_pfd2", "pll1_sys", PFD_PLL1_BASE, 1); + clk[VF610_CLK_PLL1_PFD3] = imx_clk_pfd("pll1_pfd3", "pll1_sys", PFD_PLL1_BASE, 2); + clk[VF610_CLK_PLL1_PFD4] = imx_clk_pfd("pll1_pfd4", "pll1_sys", PFD_PLL1_BASE, 3); + + clk[VF610_CLK_PLL2_PFD1] = imx_clk_pfd("pll2_pfd1", "pll2_bus", PFD_PLL2_BASE, 0); + clk[VF610_CLK_PLL2_PFD2] = imx_clk_pfd("pll2_pfd2", "pll2_bus", PFD_PLL2_BASE, 1); + clk[VF610_CLK_PLL2_PFD3] = imx_clk_pfd("pll2_pfd3", "pll2_bus", PFD_PLL2_BASE, 2); + clk[VF610_CLK_PLL2_PFD4] = imx_clk_pfd("pll2_pfd4", "pll2_bus", PFD_PLL2_BASE, 3); + + clk[VF610_CLK_PLL3_PFD1] = imx_clk_pfd("pll3_pfd1", "pll3_usb_otg", PFD_PLL3_BASE, 0); + clk[VF610_CLK_PLL3_PFD2] = imx_clk_pfd("pll3_pfd2", "pll3_usb_otg", PFD_PLL3_BASE, 1); + clk[VF610_CLK_PLL3_PFD3] = imx_clk_pfd("pll3_pfd3", "pll3_usb_otg", PFD_PLL3_BASE, 2); + clk[VF610_CLK_PLL3_PFD4] = imx_clk_pfd("pll3_pfd4", "pll3_usb_otg", PFD_PLL3_BASE, 3); clk[VF610_CLK_PLL1_PFD_SEL] = imx_clk_mux("pll1_pfd_sel", CCM_CCSR, 16, 3, pll1_sels, 5); clk[VF610_CLK_PLL2_PFD_SEL] = imx_clk_mux("pll2_pfd_sel", CCM_CCSR, 19, 3, pll2_sels, 5); @@ -167,12 +217,12 @@ static void __init vf610_clocks_init(struct device_node *ccm_node) clk[VF610_CLK_PLATFORM_BUS] = imx_clk_divider("platform_bus", "sys_bus", CCM_CACRR, 3, 3); clk[VF610_CLK_IPG_BUS] = imx_clk_divider("ipg_bus", "platform_bus", CCM_CACRR, 11, 2); - clk[VF610_CLK_PLL3_MAIN_DIV] = imx_clk_divider("pll3_main_div", "pll3_main", CCM_CACRR, 20, 1); - clk[VF610_CLK_PLL4_MAIN_DIV] = clk_register_divider_table(NULL, "pll4_main_div", "pll4_main", 0, CCM_CACRR, 6, 3, 0, pll4_main_div_table, &imx_ccm_lock); - clk[VF610_CLK_PLL6_MAIN_DIV] = imx_clk_divider("pll6_main_div", "pll6_main", CCM_CACRR, 21, 1); + clk[VF610_CLK_PLL3_MAIN_DIV] = imx_clk_divider("pll3_usb_otg_div", "pll3_usb_otg", CCM_CACRR, 20, 1); + clk[VF610_CLK_PLL4_MAIN_DIV] = clk_register_divider_table(NULL, "pll4_audio_div", "pll4_audio", 0, CCM_CACRR, 6, 3, 0, pll4_audio_div_table, &imx_ccm_lock); + clk[VF610_CLK_PLL6_MAIN_DIV] = imx_clk_divider("pll6_video_div", "pll6_video", CCM_CACRR, 21, 1); - clk[VF610_CLK_USBPHY0] = imx_clk_gate("usbphy0", "pll3_main", PLL3_CTRL, 6); - clk[VF610_CLK_USBPHY1] = imx_clk_gate("usbphy1", "pll7_main", PLL7_CTRL, 6); + clk[VF610_CLK_USBPHY0] = imx_clk_gate("usbphy0", "pll3_usb_otg", PLL3_CTRL, 6); + clk[VF610_CLK_USBPHY1] = imx_clk_gate("usbphy1", "pll7_usb_host", PLL7_CTRL, 6); clk[VF610_CLK_USBC0] = imx_clk_gate2("usbc0", "ipg_bus", CCM_CCGR1, CCM_CCGRx_CGn(4)); clk[VF610_CLK_USBC1] = imx_clk_gate2("usbc1", "ipg_bus", CCM_CCGR7, CCM_CCGRx_CGn(4)); @@ -191,8 +241,8 @@ static void __init vf610_clocks_init(struct device_node *ccm_node) clk[VF610_CLK_QSPI1_X1_DIV] = imx_clk_divider("qspi1_x1", "qspi1_x2", CCM_CSCDR3, 11, 1); clk[VF610_CLK_QSPI1] = imx_clk_gate2("qspi1", "qspi1_x1", CCM_CCGR8, CCM_CCGRx_CGn(4)); - clk[VF610_CLK_ENET_50M] = imx_clk_fixed_factor("enet_50m", "pll5_main", 1, 10); - clk[VF610_CLK_ENET_25M] = imx_clk_fixed_factor("enet_25m", "pll5_main", 1, 20); + clk[VF610_CLK_ENET_50M] = imx_clk_fixed_factor("enet_50m", "pll5_enet", 1, 10); + clk[VF610_CLK_ENET_25M] = imx_clk_fixed_factor("enet_25m", "pll5_enet", 1, 20); clk[VF610_CLK_ENET_SEL] = imx_clk_mux("enet_sel", CCM_CSCMR2, 4, 2, rmii_sels, 4); clk[VF610_CLK_ENET_TS_SEL] = imx_clk_mux("enet_ts_sel", CCM_CSCMR2, 0, 3, enet_ts_sels, 7); clk[VF610_CLK_ENET] = imx_clk_gate("enet", "enet_sel", CCM_CSCDR1, 24); diff --git a/include/dt-bindings/clock/vf610-clock.h b/include/dt-bindings/clock/vf610-clock.h index d6b56b21539b..801c0ac50c47 100644 --- a/include/dt-bindings/clock/vf610-clock.h +++ b/include/dt-bindings/clock/vf610-clock.h @@ -21,24 +21,24 @@ #define VF610_CLK_FASK_CLK_SEL 8 #define VF610_CLK_AUDIO_EXT 9 #define VF610_CLK_ENET_EXT 10 -#define VF610_CLK_PLL1_MAIN 11 +#define VF610_CLK_PLL1_SYS 11 #define VF610_CLK_PLL1_PFD1 12 #define VF610_CLK_PLL1_PFD2 13 #define VF610_CLK_PLL1_PFD3 14 #define VF610_CLK_PLL1_PFD4 15 -#define VF610_CLK_PLL2_MAIN 16 +#define VF610_CLK_PLL2_BUS 16 #define VF610_CLK_PLL2_PFD1 17 #define VF610_CLK_PLL2_PFD2 18 #define VF610_CLK_PLL2_PFD3 19 #define VF610_CLK_PLL2_PFD4 20 -#define VF610_CLK_PLL3_MAIN 21 +#define VF610_CLK_PLL3_USB_OTG 21 #define VF610_CLK_PLL3_PFD1 22 #define VF610_CLK_PLL3_PFD2 23 #define VF610_CLK_PLL3_PFD3 24 #define VF610_CLK_PLL3_PFD4 25 -#define VF610_CLK_PLL4_MAIN 26 -#define VF610_CLK_PLL5_MAIN 27 -#define VF610_CLK_PLL6_MAIN 28 +#define VF610_CLK_PLL4_AUDIO 26 +#define VF610_CLK_PLL5_ENET 27 +#define VF610_CLK_PLL6_VIDEO 28 #define VF610_CLK_PLL3_MAIN_DIV 29 #define VF610_CLK_PLL4_MAIN_DIV 30 #define VF610_CLK_PLL6_MAIN_DIV 31 @@ -166,9 +166,32 @@ #define VF610_CLK_DMAMUX3 153 #define VF610_CLK_FLEXCAN0_EN 154 #define VF610_CLK_FLEXCAN1_EN 155 -#define VF610_CLK_PLL7_MAIN 156 +#define VF610_CLK_PLL7_USB_HOST 156 #define VF610_CLK_USBPHY0 157 #define VF610_CLK_USBPHY1 158 -#define VF610_CLK_END 159 +#define VF610_CLK_LVDS1_IN 159 +#define VF610_CLK_ANACLK1 160 +#define VF610_CLK_PLL1_BYPASS_SRC 161 +#define VF610_CLK_PLL2_BYPASS_SRC 162 +#define VF610_CLK_PLL3_BYPASS_SRC 163 +#define VF610_CLK_PLL4_BYPASS_SRC 164 +#define VF610_CLK_PLL5_BYPASS_SRC 165 +#define VF610_CLK_PLL6_BYPASS_SRC 166 +#define VF610_CLK_PLL7_BYPASS_SRC 167 +#define VF610_CLK_PLL1 168 +#define VF610_CLK_PLL2 169 +#define VF610_CLK_PLL3 170 +#define VF610_CLK_PLL4 171 +#define VF610_CLK_PLL5 172 +#define VF610_CLK_PLL6 173 +#define VF610_CLK_PLL7 174 +#define VF610_PLL1_BYPASS 175 +#define VF610_PLL2_BYPASS 176 +#define VF610_PLL3_BYPASS 177 +#define VF610_PLL4_BYPASS 178 +#define VF610_PLL5_BYPASS 179 +#define VF610_PLL6_BYPASS 180 +#define VF610_PLL7_BYPASS 181 +#define VF610_CLK_END 182 #endif /* __DT_BINDINGS_CLOCK_VF610_H */ From a87fa1d81a9fb5e9adca9820e16008c40ad09f33 Mon Sep 17 00:00:00 2001 From: Grant Likely Date: Mon, 3 Nov 2014 15:15:35 +0000 Subject: [PATCH 121/371] of: Fix overflow bug in string property parsing functions The string property read helpers will run off the end of the buffer if it is handed a malformed string property. Rework the parsers to make sure that doesn't happen. At the same time add new test cases to make sure the functions behave themselves. The original implementations of of_property_read_string_index() and of_property_count_strings() both open-coded the same block of parsing code, each with it's own subtly different bugs. The fix here merges functions into a single helper and makes the original functions static inline wrappers around the helper. One non-bugfix aspect of this patch is the addition of a new wrapper, of_property_read_string_array(). The new wrapper is needed by the device_properties feature that Rafael is working on and planning to merge for v3.19. The implementation is identical both with and without the new static inline wrapper, so it just got left in to reduce the churn on the header file. Signed-off-by: Grant Likely Cc: Rafael J. Wysocki Cc: Mika Westerberg Cc: Rob Herring Cc: Arnd Bergmann Cc: Darren Hart Cc: # v3.3+: Drop selftest hunks that don't apply --- drivers/of/base.c | 88 ++++++--------------- drivers/of/selftest.c | 66 ++++++++++++++-- drivers/of/testcase-data/tests-phandle.dtsi | 2 + include/linux/of.h | 84 ++++++++++++++++---- 4 files changed, 154 insertions(+), 86 deletions(-) diff --git a/drivers/of/base.c b/drivers/of/base.c index 2305dc0382bc..3823edf2d012 100644 --- a/drivers/of/base.c +++ b/drivers/of/base.c @@ -1279,52 +1279,6 @@ int of_property_read_string(struct device_node *np, const char *propname, } EXPORT_SYMBOL_GPL(of_property_read_string); -/** - * of_property_read_string_index - Find and read a string from a multiple - * strings property. - * @np: device node from which the property value is to be read. - * @propname: name of the property to be searched. - * @index: index of the string in the list of strings - * @out_string: pointer to null terminated return string, modified only if - * return value is 0. - * - * Search for a property in a device tree node and retrieve a null - * terminated string value (pointer to data, not a copy) in the list of strings - * contained in that property. - * Returns 0 on success, -EINVAL if the property does not exist, -ENODATA if - * property does not have a value, and -EILSEQ if the string is not - * null-terminated within the length of the property data. - * - * The out_string pointer is modified only if a valid string can be decoded. - */ -int of_property_read_string_index(struct device_node *np, const char *propname, - int index, const char **output) -{ - struct property *prop = of_find_property(np, propname, NULL); - int i = 0; - size_t l = 0, total = 0; - const char *p; - - if (!prop) - return -EINVAL; - if (!prop->value) - return -ENODATA; - if (strnlen(prop->value, prop->length) >= prop->length) - return -EILSEQ; - - p = prop->value; - - for (i = 0; total < prop->length; total += l, p += l) { - l = strlen(p) + 1; - if (i++ == index) { - *output = p; - return 0; - } - } - return -ENODATA; -} -EXPORT_SYMBOL_GPL(of_property_read_string_index); - /** * of_property_match_string() - Find string in a list and return index * @np: pointer to node containing string list property @@ -1351,7 +1305,7 @@ int of_property_match_string(struct device_node *np, const char *propname, end = p + prop->length; for (i = 0; p < end; i++, p += l) { - l = strlen(p) + 1; + l = strnlen(p, end - p) + 1; if (p + l > end) return -EILSEQ; pr_debug("comparing %s with %s\n", string, p); @@ -1363,39 +1317,41 @@ int of_property_match_string(struct device_node *np, const char *propname, EXPORT_SYMBOL_GPL(of_property_match_string); /** - * of_property_count_strings - Find and return the number of strings from a - * multiple strings property. + * of_property_read_string_util() - Utility helper for parsing string properties * @np: device node from which the property value is to be read. * @propname: name of the property to be searched. + * @out_strs: output array of string pointers. + * @sz: number of array elements to read. + * @skip: Number of strings to skip over at beginning of list. * - * Search for a property in a device tree node and retrieve the number of null - * terminated string contain in it. Returns the number of strings on - * success, -EINVAL if the property does not exist, -ENODATA if property - * does not have a value, and -EILSEQ if the string is not null-terminated - * within the length of the property data. + * Don't call this function directly. It is a utility helper for the + * of_property_read_string*() family of functions. */ -int of_property_count_strings(struct device_node *np, const char *propname) +int of_property_read_string_helper(struct device_node *np, const char *propname, + const char **out_strs, size_t sz, int skip) { struct property *prop = of_find_property(np, propname, NULL); - int i = 0; - size_t l = 0, total = 0; - const char *p; + int l = 0, i = 0; + const char *p, *end; if (!prop) return -EINVAL; if (!prop->value) return -ENODATA; - if (strnlen(prop->value, prop->length) >= prop->length) - return -EILSEQ; - p = prop->value; + end = p + prop->length; - for (i = 0; total < prop->length; total += l, p += l, i++) - l = strlen(p) + 1; - - return i; + for (i = 0; p < end && (!out_strs || i < skip + sz); i++, p += l) { + l = strnlen(p, end - p) + 1; + if (p + l > end) + return -EILSEQ; + if (out_strs && i >= skip) + *out_strs++ = p; + } + i -= skip; + return i <= 0 ? -ENODATA : i; } -EXPORT_SYMBOL_GPL(of_property_count_strings); +EXPORT_SYMBOL_GPL(of_property_read_string_helper); void of_print_phandle_args(const char *msg, const struct of_phandle_args *args) { diff --git a/drivers/of/selftest.c b/drivers/of/selftest.c index 78001270a598..11b873c54a77 100644 --- a/drivers/of/selftest.c +++ b/drivers/of/selftest.c @@ -339,8 +339,9 @@ static void __init of_selftest_parse_phandle_with_args(void) selftest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc); } -static void __init of_selftest_property_match_string(void) +static void __init of_selftest_property_string(void) { + const char *strings[4]; struct device_node *np; int rc; @@ -357,13 +358,66 @@ static void __init of_selftest_property_match_string(void) rc = of_property_match_string(np, "phandle-list-names", "third"); selftest(rc == 2, "third expected:0 got:%i\n", rc); rc = of_property_match_string(np, "phandle-list-names", "fourth"); - selftest(rc == -ENODATA, "unmatched string; rc=%i", rc); + selftest(rc == -ENODATA, "unmatched string; rc=%i\n", rc); rc = of_property_match_string(np, "missing-property", "blah"); - selftest(rc == -EINVAL, "missing property; rc=%i", rc); + selftest(rc == -EINVAL, "missing property; rc=%i\n", rc); rc = of_property_match_string(np, "empty-property", "blah"); - selftest(rc == -ENODATA, "empty property; rc=%i", rc); + selftest(rc == -ENODATA, "empty property; rc=%i\n", rc); rc = of_property_match_string(np, "unterminated-string", "blah"); - selftest(rc == -EILSEQ, "unterminated string; rc=%i", rc); + selftest(rc == -EILSEQ, "unterminated string; rc=%i\n", rc); + + /* of_property_count_strings() tests */ + rc = of_property_count_strings(np, "string-property"); + selftest(rc == 1, "Incorrect string count; rc=%i\n", rc); + rc = of_property_count_strings(np, "phandle-list-names"); + selftest(rc == 3, "Incorrect string count; rc=%i\n", rc); + rc = of_property_count_strings(np, "unterminated-string"); + selftest(rc == -EILSEQ, "unterminated string; rc=%i\n", rc); + rc = of_property_count_strings(np, "unterminated-string-list"); + selftest(rc == -EILSEQ, "unterminated string array; rc=%i\n", rc); + + /* of_property_read_string_index() tests */ + rc = of_property_read_string_index(np, "string-property", 0, strings); + selftest(rc == 0 && !strcmp(strings[0], "foobar"), "of_property_read_string_index() failure; rc=%i\n", rc); + strings[0] = NULL; + rc = of_property_read_string_index(np, "string-property", 1, strings); + selftest(rc == -ENODATA && strings[0] == NULL, "of_property_read_string_index() failure; rc=%i\n", rc); + rc = of_property_read_string_index(np, "phandle-list-names", 0, strings); + selftest(rc == 0 && !strcmp(strings[0], "first"), "of_property_read_string_index() failure; rc=%i\n", rc); + rc = of_property_read_string_index(np, "phandle-list-names", 1, strings); + selftest(rc == 0 && !strcmp(strings[0], "second"), "of_property_read_string_index() failure; rc=%i\n", rc); + rc = of_property_read_string_index(np, "phandle-list-names", 2, strings); + selftest(rc == 0 && !strcmp(strings[0], "third"), "of_property_read_string_index() failure; rc=%i\n", rc); + strings[0] = NULL; + rc = of_property_read_string_index(np, "phandle-list-names", 3, strings); + selftest(rc == -ENODATA && strings[0] == NULL, "of_property_read_string_index() failure; rc=%i\n", rc); + strings[0] = NULL; + rc = of_property_read_string_index(np, "unterminated-string", 0, strings); + selftest(rc == -EILSEQ && strings[0] == NULL, "of_property_read_string_index() failure; rc=%i\n", rc); + rc = of_property_read_string_index(np, "unterminated-string-list", 0, strings); + selftest(rc == 0 && !strcmp(strings[0], "first"), "of_property_read_string_index() failure; rc=%i\n", rc); + strings[0] = NULL; + rc = of_property_read_string_index(np, "unterminated-string-list", 2, strings); /* should fail */ + selftest(rc == -EILSEQ && strings[0] == NULL, "of_property_read_string_index() failure; rc=%i\n", rc); + strings[1] = NULL; + + /* of_property_read_string_array() tests */ + rc = of_property_read_string_array(np, "string-property", strings, 4); + selftest(rc == 1, "Incorrect string count; rc=%i\n", rc); + rc = of_property_read_string_array(np, "phandle-list-names", strings, 4); + selftest(rc == 3, "Incorrect string count; rc=%i\n", rc); + rc = of_property_read_string_array(np, "unterminated-string", strings, 4); + selftest(rc == -EILSEQ, "unterminated string; rc=%i\n", rc); + /* -- An incorrectly formed string should cause a failure */ + rc = of_property_read_string_array(np, "unterminated-string-list", strings, 4); + selftest(rc == -EILSEQ, "unterminated string array; rc=%i\n", rc); + /* -- parsing the correctly formed strings should still work: */ + strings[2] = NULL; + rc = of_property_read_string_array(np, "unterminated-string-list", strings, 2); + selftest(rc == 2 && strings[2] == NULL, "of_property_read_string_array() failure; rc=%i\n", rc); + strings[1] = NULL; + rc = of_property_read_string_array(np, "phandle-list-names", strings, 1); + selftest(rc == 1 && strings[1] == NULL, "Overwrote end of string array; rc=%i, str='%s'\n", rc, strings[1]); } #define propcmp(p1, p2) (((p1)->length == (p2)->length) && \ @@ -881,7 +935,7 @@ static int __init of_selftest(void) of_selftest_find_node_by_name(); of_selftest_dynamic(); of_selftest_parse_phandle_with_args(); - of_selftest_property_match_string(); + of_selftest_property_string(); of_selftest_property_copy(); of_selftest_changeset(); of_selftest_parse_interrupts(); diff --git a/drivers/of/testcase-data/tests-phandle.dtsi b/drivers/of/testcase-data/tests-phandle.dtsi index ce0fe083d406..5b1527e8a7fb 100644 --- a/drivers/of/testcase-data/tests-phandle.dtsi +++ b/drivers/of/testcase-data/tests-phandle.dtsi @@ -39,7 +39,9 @@ phandle-list-bad-args = <&provider2 1 0>, <&provider3 0>; empty-property; + string-property = "foobar"; unterminated-string = [40 41 42 43]; + unterminated-string-list = "first", "second", [40 41 42 43]; }; }; }; diff --git a/include/linux/of.h b/include/linux/of.h index 6545e7aec7bb..29f0adc5f3e4 100644 --- a/include/linux/of.h +++ b/include/linux/of.h @@ -267,14 +267,12 @@ extern int of_property_read_u64(const struct device_node *np, extern int of_property_read_string(struct device_node *np, const char *propname, const char **out_string); -extern int of_property_read_string_index(struct device_node *np, - const char *propname, - int index, const char **output); extern int of_property_match_string(struct device_node *np, const char *propname, const char *string); -extern int of_property_count_strings(struct device_node *np, - const char *propname); +extern int of_property_read_string_helper(struct device_node *np, + const char *propname, + const char **out_strs, size_t sz, int index); extern int of_device_is_compatible(const struct device_node *device, const char *); extern int of_device_is_available(const struct device_node *device); @@ -486,15 +484,9 @@ static inline int of_property_read_string(struct device_node *np, return -ENOSYS; } -static inline int of_property_read_string_index(struct device_node *np, - const char *propname, int index, - const char **out_string) -{ - return -ENOSYS; -} - -static inline int of_property_count_strings(struct device_node *np, - const char *propname) +static inline int of_property_read_string_helper(struct device_node *np, + const char *propname, + const char **out_strs, size_t sz, int index) { return -ENOSYS; } @@ -667,6 +659,70 @@ static inline int of_property_count_u64_elems(const struct device_node *np, return of_property_count_elems_of_size(np, propname, sizeof(u64)); } +/** + * of_property_read_string_array() - Read an array of strings from a multiple + * strings property. + * @np: device node from which the property value is to be read. + * @propname: name of the property to be searched. + * @out_strs: output array of string pointers. + * @sz: number of array elements to read. + * + * Search for a property in a device tree node and retrieve a list of + * terminated string values (pointer to data, not a copy) in that property. + * + * If @out_strs is NULL, the number of strings in the property is returned. + */ +static inline int of_property_read_string_array(struct device_node *np, + const char *propname, const char **out_strs, + size_t sz) +{ + return of_property_read_string_helper(np, propname, out_strs, sz, 0); +} + +/** + * of_property_count_strings() - Find and return the number of strings from a + * multiple strings property. + * @np: device node from which the property value is to be read. + * @propname: name of the property to be searched. + * + * Search for a property in a device tree node and retrieve the number of null + * terminated string contain in it. Returns the number of strings on + * success, -EINVAL if the property does not exist, -ENODATA if property + * does not have a value, and -EILSEQ if the string is not null-terminated + * within the length of the property data. + */ +static inline int of_property_count_strings(struct device_node *np, + const char *propname) +{ + return of_property_read_string_helper(np, propname, NULL, 0, 0); +} + +/** + * of_property_read_string_index() - Find and read a string from a multiple + * strings property. + * @np: device node from which the property value is to be read. + * @propname: name of the property to be searched. + * @index: index of the string in the list of strings + * @out_string: pointer to null terminated return string, modified only if + * return value is 0. + * + * Search for a property in a device tree node and retrieve a null + * terminated string value (pointer to data, not a copy) in the list of strings + * contained in that property. + * Returns 0 on success, -EINVAL if the property does not exist, -ENODATA if + * property does not have a value, and -EILSEQ if the string is not + * null-terminated within the length of the property data. + * + * The out_string pointer is modified only if a valid string can be decoded. + */ +static inline int of_property_read_string_index(struct device_node *np, + const char *propname, + int index, const char **output) +{ + int rc = of_property_read_string_helper(np, propname, output, 1, index); + return rc < 0 ? rc : 0; +} + /** * of_property_read_bool - Findfrom a property * @np: device node from which the property value is to be read. From 5cc7b04740effa5cc0af53f434134b5859d58b73 Mon Sep 17 00:00:00 2001 From: Alexander Stein Date: Tue, 4 Nov 2014 09:20:18 +0100 Subject: [PATCH 122/371] spi: fsl-dspi: Fix CTAR selection There are only 4 CTAR registers (CTAR0 - CTAR3) so we can only use the lower 2 bits of the chip select to select a CTAR register. SPI_PUSHR_CTAS used the lower 3 bits which would result in wrong bit values if the chip selects 4/5 are used. For those chip selects SPI_CTAR even calculated offsets of non-existing registers. Signed-off-by: Alexander Stein Signed-off-by: Mark Brown Cc: stable@vger.kernel.org --- drivers/spi/spi-fsl-dspi.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/spi/spi-fsl-dspi.c b/drivers/spi/spi-fsl-dspi.c index 448216025ce8..831ceb4a91f6 100644 --- a/drivers/spi/spi-fsl-dspi.c +++ b/drivers/spi/spi-fsl-dspi.c @@ -46,7 +46,7 @@ #define SPI_TCR 0x08 -#define SPI_CTAR(x) (0x0c + (x * 4)) +#define SPI_CTAR(x) (0x0c + (((x) & 0x3) * 4)) #define SPI_CTAR_FMSZ(x) (((x) & 0x0000000f) << 27) #define SPI_CTAR_CPOL(x) ((x) << 26) #define SPI_CTAR_CPHA(x) ((x) << 25) @@ -70,7 +70,7 @@ #define SPI_PUSHR 0x34 #define SPI_PUSHR_CONT (1 << 31) -#define SPI_PUSHR_CTAS(x) (((x) & 0x00000007) << 28) +#define SPI_PUSHR_CTAS(x) (((x) & 0x00000003) << 28) #define SPI_PUSHR_EOQ (1 << 27) #define SPI_PUSHR_CTCNT (1 << 26) #define SPI_PUSHR_PCS(x) (((1 << x) & 0x0000003f) << 16) From 89fbec5b97fbcf08db3a9cd93a340f21f95d38b8 Mon Sep 17 00:00:00 2001 From: Fabio Estevam Date: Tue, 4 Nov 2014 08:28:47 -0200 Subject: [PATCH 123/371] ARM: imx: Fix the removal of CONFIG_SPI option Since 64546e9fe3a5b8c ("ARM: imx_v6_v7_defconfig updates") and commit 0650f855d2e4b0b9 ("ARM: imx_v4_v5_defconfig: Select CONFIG_IMX_WEIM") CONFIG_SPI selection was dropped by savedefconfig for imx_v4_v5_defconfig and imx_v6_v7_defconfig. In order to keep the same behaviour as previous kernel versions and avoid regressions, let's add CONFIG_SPI option back. Signed-off-by: Fabio Estevam Signed-off-by: Shawn Guo --- arch/arm/configs/imx_v4_v5_defconfig | 1 + arch/arm/configs/imx_v6_v7_defconfig | 1 + 2 files changed, 2 insertions(+) diff --git a/arch/arm/configs/imx_v4_v5_defconfig b/arch/arm/configs/imx_v4_v5_defconfig index e688741c89aa..e6b0007355f8 100644 --- a/arch/arm/configs/imx_v4_v5_defconfig +++ b/arch/arm/configs/imx_v4_v5_defconfig @@ -97,6 +97,7 @@ CONFIG_SERIAL_IMX_CONSOLE=y # CONFIG_HW_RANDOM is not set CONFIG_I2C_CHARDEV=y CONFIG_I2C_IMX=y +CONFIG_SPI=y CONFIG_SPI_IMX=y CONFIG_SPI_SPIDEV=y CONFIG_GPIO_SYSFS=y diff --git a/arch/arm/configs/imx_v6_v7_defconfig b/arch/arm/configs/imx_v6_v7_defconfig index 8fca6e276b69..6790f1b3f3a1 100644 --- a/arch/arm/configs/imx_v6_v7_defconfig +++ b/arch/arm/configs/imx_v6_v7_defconfig @@ -158,6 +158,7 @@ CONFIG_I2C_CHARDEV=y CONFIG_I2C_ALGOPCF=m CONFIG_I2C_ALGOPCA=m CONFIG_I2C_IMX=y +CONFIG_SPI=y CONFIG_SPI_IMX=y CONFIG_GPIO_SYSFS=y CONFIG_GPIO_MC9S08DZ60=y From 0097761013253930341e23723d64e0845c3f9edd Mon Sep 17 00:00:00 2001 From: Ralf Baechle Date: Tue, 4 Nov 2014 11:54:29 +0100 Subject: [PATCH 124/371] MIPS: Fix strnlen_user() return value in case of overlong strings. We were returning maxlen like the userland strnlen if no '\0' character was encountered while the kernel version is expected to return a value larger than maxlen. Fixed to return maxlen + 1. Signed-off-by: Ralf Baechle --- arch/mips/lib/strnlen_user.S | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/arch/mips/lib/strnlen_user.S b/arch/mips/lib/strnlen_user.S index f3af6995e2a6..7d12c0dded3d 100644 --- a/arch/mips/lib/strnlen_user.S +++ b/arch/mips/lib/strnlen_user.S @@ -40,9 +40,11 @@ FEXPORT(__strnlen_\func\()_nocheck_asm) .else EX(lbe, t0, (v0), .Lfault\@) .endif - PTR_ADDIU v0, 1 + .set noreorder bnez t0, 1b -1: PTR_SUBU v0, a0 +1: PTR_ADDIU v0, 1 + .set reorder + PTR_SUBU v0, a0 jr ra END(__strnlen_\func\()_asm) From 6e5aafb27419f32575b27ef9d6a31e5d54661aca Mon Sep 17 00:00:00 2001 From: Chris Mason Date: Tue, 4 Nov 2014 06:59:04 -0800 Subject: [PATCH 125/371] Btrfs: fix kfree on list_head in btrfs_lookup_csums_range error cleanup If we hit any errors in btrfs_lookup_csums_range, we'll loop through all the csums we allocate and free them. But the code was using list_entry incorrectly, and ended up trying to free the on-stack list_head instead. This bug came from commit 0678b6185 btrfs: Don't BUG_ON kzalloc error in btrfs_lookup_csums_range() Signed-off-by: Chris Mason Reported-by: Erik Berg cc: stable@vger.kernel.org # 3.3 or newer --- fs/btrfs/file-item.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/btrfs/file-item.c b/fs/btrfs/file-item.c index 783a94355efd..84a2d1868271 100644 --- a/fs/btrfs/file-item.c +++ b/fs/btrfs/file-item.c @@ -413,7 +413,7 @@ int btrfs_lookup_csums_range(struct btrfs_root *root, u64 start, u64 end, ret = 0; fail: while (ret < 0 && !list_empty(&tmplist)) { - sums = list_entry(&tmplist, struct btrfs_ordered_sum, list); + sums = list_entry(tmplist.next, struct btrfs_ordered_sum, list); list_del(&sums->list); kfree(sums); } From 9a23c1d6f0f5dbac4c9b73fa6cea7c9ee3d29074 Mon Sep 17 00:00:00 2001 From: Antoine Tenart Date: Mon, 3 Nov 2014 09:56:11 +0100 Subject: [PATCH 126/371] ahci: fix AHCI parameters not taken into account Changes into the AHCI subsystem have introduced a bug by not taking into account the force_port_map and mask_port_map parameters when using the ahci_pci_save_initial_config function. This commit fixes it by setting the internal parameters of the ahci_port_priv structure. Fixes: 725c7b570fda Reported-and-tested-by: Zlatko Calusic Signed-off-by: Antoine Tenart --- drivers/ata/ahci.c | 9 +++------ 1 file changed, 3 insertions(+), 6 deletions(-) diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c index 89c081134112..e45f83789809 100644 --- a/drivers/ata/ahci.c +++ b/drivers/ata/ahci.c @@ -527,12 +527,9 @@ MODULE_PARM_DESC(marvell_enable, "Marvell SATA via AHCI (1 = enabled)"); static void ahci_pci_save_initial_config(struct pci_dev *pdev, struct ahci_host_priv *hpriv) { - unsigned int force_port_map = 0; - unsigned int mask_port_map = 0; - if (pdev->vendor == PCI_VENDOR_ID_JMICRON && pdev->device == 0x2361) { dev_info(&pdev->dev, "JMB361 has only one port\n"); - force_port_map = 1; + hpriv->force_port_map = 1; } /* @@ -542,9 +539,9 @@ static void ahci_pci_save_initial_config(struct pci_dev *pdev, */ if (hpriv->flags & AHCI_HFLAG_MV_PATA) { if (pdev->device == 0x6121) - mask_port_map = 0x3; + hpriv->mask_port_map = 0x3; else - mask_port_map = 0xf; + hpriv->mask_port_map = 0xf; dev_info(&pdev->dev, "Disabling your PATA port. Use the boot option 'ahci.marvell_enable=0' to avoid this.\n"); } From c822ed967cba38505713d59ed40a114386ef6c01 Mon Sep 17 00:00:00 2001 From: Joe Thornber Date: Fri, 10 Oct 2014 09:41:09 +0100 Subject: [PATCH 127/371] dm thin: grab a virtual cell before looking up the mapping Avoids normal IO racing with discard. Signed-off-by: Joe Thornber Signed-off-by: Mike Snitzer Cc: stable@vger.kernel.org --- drivers/md/dm-thin.c | 16 ++++++++++++---- 1 file changed, 12 insertions(+), 4 deletions(-) diff --git a/drivers/md/dm-thin.c b/drivers/md/dm-thin.c index 4843801173fe..0f86d802b533 100644 --- a/drivers/md/dm-thin.c +++ b/drivers/md/dm-thin.c @@ -1936,6 +1936,14 @@ static int thin_bio_map(struct dm_target *ti, struct bio *bio) return DM_MAPIO_SUBMITTED; } + /* + * We must hold the virtual cell before doing the lookup, otherwise + * there's a race with discard. + */ + build_virtual_key(tc->td, block, &key); + if (dm_bio_detain(tc->pool->prison, &key, bio, &cell1, &cell_result)) + return DM_MAPIO_SUBMITTED; + r = dm_thin_find_block(td, block, 0, &result); /* @@ -1959,13 +1967,10 @@ static int thin_bio_map(struct dm_target *ti, struct bio *bio) * shared flag will be set in their case. */ thin_defer_bio(tc, bio); + cell_defer_no_holder_no_free(tc, &cell1); return DM_MAPIO_SUBMITTED; } - build_virtual_key(tc->td, block, &key); - if (dm_bio_detain(tc->pool->prison, &key, bio, &cell1, &cell_result)) - return DM_MAPIO_SUBMITTED; - build_data_key(tc->td, result.block, &key); if (dm_bio_detain(tc->pool->prison, &key, bio, &cell2, &cell_result)) { cell_defer_no_holder_no_free(tc, &cell1); @@ -1986,6 +1991,7 @@ static int thin_bio_map(struct dm_target *ti, struct bio *bio) * of doing so. */ handle_unserviceable_bio(tc->pool, bio); + cell_defer_no_holder_no_free(tc, &cell1); return DM_MAPIO_SUBMITTED; } /* fall through */ @@ -1996,6 +2002,7 @@ static int thin_bio_map(struct dm_target *ti, struct bio *bio) * provide the hint to load the metadata into cache. */ thin_defer_bio(tc, bio); + cell_defer_no_holder_no_free(tc, &cell1); return DM_MAPIO_SUBMITTED; default: @@ -2005,6 +2012,7 @@ static int thin_bio_map(struct dm_target *ti, struct bio *bio) * pool is switched to fail-io mode. */ bio_io_error(bio); + cell_defer_no_holder_no_free(tc, &cell1); return DM_MAPIO_SUBMITTED; } } From f3af020b9a8d298022b811a19719df0cf461efa5 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Tue, 4 Nov 2014 13:52:27 -0500 Subject: [PATCH 128/371] blk-mq: make mq_queue_reinit_notify() freeze queues in parallel q->mq_usage_counter is a percpu_ref which is killed and drained when the queue is frozen. On a CPU hotplug event, blk_mq_queue_reinit() which involves freezing the queue is invoked on all existing queues. Because percpu_ref killing and draining involve a RCU grace period, doing the above on one queue after another may take a long time if there are many queues on the system. This patch splits out initiation of freezing and waiting for its completion, and updates blk_mq_queue_reinit_notify() so that the queues are frozen in parallel instead of one after another. Note that freezing and unfreezing are moved from blk_mq_queue_reinit() to blk_mq_queue_reinit_notify(). Signed-off-by: Tejun Heo Reported-by: Christian Borntraeger Tested-by: Christian Borntraeger Signed-off-by: Jens Axboe --- block/blk-mq.c | 41 +++++++++++++++++++++++++++++++++-------- 1 file changed, 33 insertions(+), 8 deletions(-) diff --git a/block/blk-mq.c b/block/blk-mq.c index 68929bad9a6a..1d016fc9a8b6 100644 --- a/block/blk-mq.c +++ b/block/blk-mq.c @@ -107,11 +107,7 @@ static void blk_mq_usage_counter_release(struct percpu_ref *ref) wake_up_all(&q->mq_freeze_wq); } -/* - * Guarantee no request is in use, so we can change any data structure of - * the queue afterward. - */ -void blk_mq_freeze_queue(struct request_queue *q) +static void blk_mq_freeze_queue_start(struct request_queue *q) { bool freeze; @@ -123,9 +119,23 @@ void blk_mq_freeze_queue(struct request_queue *q) percpu_ref_kill(&q->mq_usage_counter); blk_mq_run_queues(q, false); } +} + +static void blk_mq_freeze_queue_wait(struct request_queue *q) +{ wait_event(q->mq_freeze_wq, percpu_ref_is_zero(&q->mq_usage_counter)); } +/* + * Guarantee no request is in use, so we can change any data structure of + * the queue afterward. + */ +void blk_mq_freeze_queue(struct request_queue *q) +{ + blk_mq_freeze_queue_start(q); + blk_mq_freeze_queue_wait(q); +} + static void blk_mq_unfreeze_queue(struct request_queue *q) { bool wake; @@ -1921,7 +1931,7 @@ void blk_mq_free_queue(struct request_queue *q) /* Basically redo blk_mq_init_queue with queue frozen */ static void blk_mq_queue_reinit(struct request_queue *q) { - blk_mq_freeze_queue(q); + WARN_ON_ONCE(!q->mq_freeze_depth); blk_mq_sysfs_unregister(q); @@ -1936,8 +1946,6 @@ static void blk_mq_queue_reinit(struct request_queue *q) blk_mq_map_swqueue(q); blk_mq_sysfs_register(q); - - blk_mq_unfreeze_queue(q); } static int blk_mq_queue_reinit_notify(struct notifier_block *nb, @@ -1956,8 +1964,25 @@ static int blk_mq_queue_reinit_notify(struct notifier_block *nb, return NOTIFY_OK; mutex_lock(&all_q_mutex); + + /* + * We need to freeze and reinit all existing queues. Freezing + * involves synchronous wait for an RCU grace period and doing it + * one by one may take a long time. Start freezing all queues in + * one swoop and then wait for the completions so that freezing can + * take place in parallel. + */ + list_for_each_entry(q, &all_q_list, all_q_node) + blk_mq_freeze_queue_start(q); + list_for_each_entry(q, &all_q_list, all_q_node) + blk_mq_freeze_queue_wait(q); + list_for_each_entry(q, &all_q_list, all_q_node) blk_mq_queue_reinit(q); + + list_for_each_entry(q, &all_q_list, all_q_node) + blk_mq_unfreeze_queue(q); + mutex_unlock(&all_q_mutex); return NOTIFY_OK; } From 09c9e0593d7215c809a4a47659b0e760112d656e Mon Sep 17 00:00:00 2001 From: Iyappan Subramanian Date: Mon, 3 Nov 2014 11:59:54 -0800 Subject: [PATCH 129/371] dtb: xgene: fix: Backward compatibility with older firmware The following kernel crash was reported when using older firmware (<= 1.13.28). [ 0.980000] libphy: APM X-Gene MDIO bus: probed [ 1.130000] Unhandled fault: synchronous external abort (0x96000010) at 0xffffff800009a17c [ 1.140000] Internal error: : 96000010 [#1] SMP [ 1.140000] Modules linked in: [ 1.140000] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 3.17.0+ #21 [ 1.140000] task: ffffffc3f0110000 ti: ffffffc3f0064000 task.ti: ffffffc3f0064000 [ 1.140000] PC is at ioread32+0x58/0x68 [ 1.140000] LR is at xgene_enet_setup_ring+0x18c/0x1cc [ 1.140000] pc : [] lr : [] pstate: a0000045 [ 1.140000] sp : ffffffc3f0067b20 [ 1.140000] x29: ffffffc3f0067b20 x28: ffffffc000aa8ea0 [ 1.140000] x27: ffffffc000bb2000 x26: ffffffc000a64270 [ 1.140000] x25: ffffffc000b05ad8 x24: ffffffc0ff99ba58 [ 1.140000] x23: 0000000000004000 x22: 0000000000004000 [ 1.140000] x21: 0000000000000200 x20: 0000000000200000 [ 1.140000] x19: ffffffc0ff99ba18 x18: ffffffc0007a6000 [ 1.140000] x17: 0000000000000007 x16: 000000000000000e [ 1.140000] x15: 0000000000000001 x14: 0000000000000000 [ 1.140000] x13: ffffffbeedb71320 x12: 00000000ffffff80 [ 1.140000] x11: 0000000000000002 x10: 0000000000000000 [ 1.140000] x9 : 0000000000000000 x8 : ffffffc3eb2a4000 [ 1.140000] x7 : 0000000000000000 x6 : 0000000000000000 [ 1.140000] x5 : 0000000001080000 x4 : 000000007d654010 [ 1.140000] x3 : ffffffffffffffff x2 : 000000000003ffff [ 1.140000] x1 : ffffff800009a17c x0 : ffffff800009a17c The issue was that the older firmware does not support 10GbE and SGMII based 1GBE interfaces. This patch changes the address length of the reg property of sgmii0 and xgmii nodes and serves as preparatory patch for the fix. Signed-off-by: Iyappan Subramanian Signed-off-by: Keyur Chudgar Reported-by: Dann Frazier Signed-off-by: David S. Miller --- arch/arm64/boot/dts/apm-storm.dtsi | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/arch/arm64/boot/dts/apm-storm.dtsi b/arch/arm64/boot/dts/apm-storm.dtsi index 295c72d52a1f..f1ad9c2ab2e9 100644 --- a/arch/arm64/boot/dts/apm-storm.dtsi +++ b/arch/arm64/boot/dts/apm-storm.dtsi @@ -599,7 +599,7 @@ compatible = "apm,xgene-enet"; status = "disabled"; reg = <0x0 0x17020000 0x0 0xd100>, - <0x0 0X17030000 0x0 0X400>, + <0x0 0X17030000 0x0 0Xc300>, <0x0 0X10000000 0x0 0X200>; reg-names = "enet_csr", "ring_csr", "ring_cmd"; interrupts = <0x0 0x3c 0x4>; @@ -624,9 +624,9 @@ sgenet0: ethernet@1f210000 { compatible = "apm,xgene-enet"; status = "disabled"; - reg = <0x0 0x1f210000 0x0 0x10000>, - <0x0 0x1f200000 0x0 0X10000>, - <0x0 0x1B000000 0x0 0X20000>; + reg = <0x0 0x1f210000 0x0 0xd100>, + <0x0 0x1f200000 0x0 0Xc300>, + <0x0 0x1B000000 0x0 0X200>; reg-names = "enet_csr", "ring_csr", "ring_cmd"; interrupts = <0x0 0xA0 0x4>; dma-coherent; @@ -639,7 +639,7 @@ compatible = "apm,xgene-enet"; status = "disabled"; reg = <0x0 0x1f610000 0x0 0xd100>, - <0x0 0x1f600000 0x0 0X400>, + <0x0 0x1f600000 0x0 0Xc300>, <0x0 0x18000000 0x0 0X200>; reg-names = "enet_csr", "ring_csr", "ring_cmd"; interrupts = <0x0 0x60 0x4>; From c3f4465d272fa94d5a077c502e83d3e712ec8d62 Mon Sep 17 00:00:00 2001 From: Iyappan Subramanian Date: Mon, 3 Nov 2014 11:59:55 -0800 Subject: [PATCH 130/371] drivers: net: xgene: Backward compatibility with older firmware This patch adds support when used with older firmware (<= 1.13.28). - Added xgene_ring_mgr_init() to check whether ring manager is initialized - Calling xgene_ring_mgr_init() from xgene_port_ops.reset() - To handle errors, changed the return type of xgene_port_ops.reset() Signed-off-by: Iyappan Subramanian Signed-off-by: Keyur Chudgar Signed-off-by: David S. Miller --- drivers/net/ethernet/apm/xgene/xgene_enet_hw.c | 18 +++++++++++++++++- drivers/net/ethernet/apm/xgene/xgene_enet_hw.h | 4 ++++ .../net/ethernet/apm/xgene/xgene_enet_main.c | 5 ++++- .../net/ethernet/apm/xgene/xgene_enet_main.h | 2 +- .../net/ethernet/apm/xgene/xgene_enet_sgmac.c | 7 ++++++- .../net/ethernet/apm/xgene/xgene_enet_xgmac.c | 7 ++++++- 6 files changed, 38 insertions(+), 5 deletions(-) diff --git a/drivers/net/ethernet/apm/xgene/xgene_enet_hw.c b/drivers/net/ethernet/apm/xgene/xgene_enet_hw.c index 63ea1941e973..7ba83ffb08ac 100644 --- a/drivers/net/ethernet/apm/xgene/xgene_enet_hw.c +++ b/drivers/net/ethernet/apm/xgene/xgene_enet_hw.c @@ -575,10 +575,24 @@ static void xgene_gmac_tx_disable(struct xgene_enet_pdata *pdata) xgene_enet_wr_mcx_mac(pdata, MAC_CONFIG_1_ADDR, data & ~TX_EN); } -static void xgene_enet_reset(struct xgene_enet_pdata *pdata) +bool xgene_ring_mgr_init(struct xgene_enet_pdata *p) +{ + if (!ioread32(p->ring_csr_addr + CLKEN_ADDR)) + return false; + + if (ioread32(p->ring_csr_addr + SRST_ADDR)) + return false; + + return true; +} + +static int xgene_enet_reset(struct xgene_enet_pdata *pdata) { u32 val; + if (!xgene_ring_mgr_init(pdata)) + return -ENODEV; + clk_prepare_enable(pdata->clk); clk_disable_unprepare(pdata->clk); clk_prepare_enable(pdata->clk); @@ -590,6 +604,8 @@ static void xgene_enet_reset(struct xgene_enet_pdata *pdata) val |= SCAN_AUTO_INCR; MGMT_CLOCK_SEL_SET(&val, 1); xgene_enet_wr_mcx_mac(pdata, MII_MGMT_CONFIG_ADDR, val); + + return 0; } static void xgene_gport_shutdown(struct xgene_enet_pdata *pdata) diff --git a/drivers/net/ethernet/apm/xgene/xgene_enet_hw.h b/drivers/net/ethernet/apm/xgene/xgene_enet_hw.h index 38558584080e..ec45f3256f0e 100644 --- a/drivers/net/ethernet/apm/xgene/xgene_enet_hw.h +++ b/drivers/net/ethernet/apm/xgene/xgene_enet_hw.h @@ -104,6 +104,9 @@ enum xgene_enet_rm { #define BLOCK_ETH_MAC_OFFSET 0x0000 #define BLOCK_ETH_MAC_CSR_OFFSET 0x2800 +#define CLKEN_ADDR 0xc208 +#define SRST_ADDR 0xc200 + #define MAC_ADDR_REG_OFFSET 0x00 #define MAC_COMMAND_REG_OFFSET 0x04 #define MAC_WRITE_REG_OFFSET 0x08 @@ -318,6 +321,7 @@ void xgene_enet_parse_error(struct xgene_enet_desc_ring *ring, int xgene_enet_mdio_config(struct xgene_enet_pdata *pdata); void xgene_enet_mdio_remove(struct xgene_enet_pdata *pdata); +bool xgene_ring_mgr_init(struct xgene_enet_pdata *p); extern struct xgene_mac_ops xgene_gmac_ops; extern struct xgene_port_ops xgene_gport_ops; diff --git a/drivers/net/ethernet/apm/xgene/xgene_enet_main.c b/drivers/net/ethernet/apm/xgene/xgene_enet_main.c index 3c208cc6f6bb..cc3f9559a196 100644 --- a/drivers/net/ethernet/apm/xgene/xgene_enet_main.c +++ b/drivers/net/ethernet/apm/xgene/xgene_enet_main.c @@ -852,7 +852,9 @@ static int xgene_enet_init_hw(struct xgene_enet_pdata *pdata) u16 dst_ring_num; int ret; - pdata->port_ops->reset(pdata); + ret = pdata->port_ops->reset(pdata); + if (ret) + return ret; ret = xgene_enet_create_desc_rings(ndev); if (ret) { @@ -954,6 +956,7 @@ static int xgene_enet_probe(struct platform_device *pdev) return ret; err: + unregister_netdev(ndev); free_netdev(ndev); return ret; } diff --git a/drivers/net/ethernet/apm/xgene/xgene_enet_main.h b/drivers/net/ethernet/apm/xgene/xgene_enet_main.h index 874e5a01161f..dba647d35740 100644 --- a/drivers/net/ethernet/apm/xgene/xgene_enet_main.h +++ b/drivers/net/ethernet/apm/xgene/xgene_enet_main.h @@ -83,7 +83,7 @@ struct xgene_mac_ops { }; struct xgene_port_ops { - void (*reset)(struct xgene_enet_pdata *pdata); + int (*reset)(struct xgene_enet_pdata *pdata); void (*cle_bypass)(struct xgene_enet_pdata *pdata, u32 dst_ring_num, u16 bufpool_id); void (*shutdown)(struct xgene_enet_pdata *pdata); diff --git a/drivers/net/ethernet/apm/xgene/xgene_enet_sgmac.c b/drivers/net/ethernet/apm/xgene/xgene_enet_sgmac.c index c22f32622fa9..f5d4f68c288c 100644 --- a/drivers/net/ethernet/apm/xgene/xgene_enet_sgmac.c +++ b/drivers/net/ethernet/apm/xgene/xgene_enet_sgmac.c @@ -311,14 +311,19 @@ static void xgene_sgmac_tx_disable(struct xgene_enet_pdata *p) xgene_sgmac_rxtx(p, TX_EN, false); } -static void xgene_enet_reset(struct xgene_enet_pdata *p) +static int xgene_enet_reset(struct xgene_enet_pdata *p) { + if (!xgene_ring_mgr_init(p)) + return -ENODEV; + clk_prepare_enable(p->clk); clk_disable_unprepare(p->clk); clk_prepare_enable(p->clk); xgene_enet_ecc_init(p); xgene_enet_config_ring_if_assoc(p); + + return 0; } static void xgene_enet_cle_bypass(struct xgene_enet_pdata *p, diff --git a/drivers/net/ethernet/apm/xgene/xgene_enet_xgmac.c b/drivers/net/ethernet/apm/xgene/xgene_enet_xgmac.c index 67d07206b3c7..a18a9d1f1143 100644 --- a/drivers/net/ethernet/apm/xgene/xgene_enet_xgmac.c +++ b/drivers/net/ethernet/apm/xgene/xgene_enet_xgmac.c @@ -252,14 +252,19 @@ static void xgene_xgmac_tx_disable(struct xgene_enet_pdata *pdata) xgene_enet_wr_mac(pdata, AXGMAC_CONFIG_1, data & ~HSTTFEN); } -static void xgene_enet_reset(struct xgene_enet_pdata *pdata) +static int xgene_enet_reset(struct xgene_enet_pdata *pdata) { + if (!xgene_ring_mgr_init(pdata)) + return -ENODEV; + clk_prepare_enable(pdata->clk); clk_disable_unprepare(pdata->clk); clk_prepare_enable(pdata->clk); xgene_enet_ecc_init(pdata); xgene_enet_config_ring_if_assoc(pdata); + + return 0; } static void xgene_enet_xgcle_bypass(struct xgene_enet_pdata *pdata, From bdd330f0506b2c4d02d5453fa32e785f0c348388 Mon Sep 17 00:00:00 2001 From: Iyappan Subramanian Date: Mon, 3 Nov 2014 11:59:56 -0800 Subject: [PATCH 131/371] drivers: net: xgene: fix: Use separate resources This patch fixes the following kernel crash during SGMII based 1GbE probe. BUG: Bad page state in process swapper/0 pfn:40fe6ad page:ffffffbee37a75d8 count:-1 mapcount:0 mapping: (null) index:0x0 flags: 0x0() page dumped because: nonzero _count Modules linked in: CPU: 0 PID: 0 Comm: swapper/0 Not tainted 3.17.0+ #7 Call trace: [] dump_backtrace+0x0/0x12c [] show_stack+0x10/0x1c [] dump_stack+0x74/0xc4 [] bad_page+0xd8/0x128 [] get_page_from_freelist+0x4b8/0x640 [] __alloc_pages_nodemask+0xd8/0x834 [] __netdev_alloc_frag+0x124/0x1b8 [] __netdev_alloc_skb+0x90/0x10c [] xgene_enet_refill_bufpool+0x11c/0x280 [] xgene_enet_process_ring+0x168/0x340 [] xgene_enet_napi+0x1c/0x50 [] net_rx_action+0xc8/0x18c [] __do_softirq+0x114/0x24c [] irq_exit+0x94/0xc8 [] __handle_domain_irq+0x8c/0xf4 [] gic_handle_irq+0x30/0x7c This was due to hardware resource sharing conflict with the firmware. This patch fixes this crash by using resources (descriptor ring, prefetch buffer) that are not shared. Signed-off-by: Iyappan Subramanian Signed-off-by: Keyur Chudgar Signed-off-by: David S. Miller --- drivers/net/ethernet/apm/xgene/xgene_enet_main.c | 6 +++--- drivers/net/ethernet/apm/xgene/xgene_enet_main.h | 3 +++ 2 files changed, 6 insertions(+), 3 deletions(-) diff --git a/drivers/net/ethernet/apm/xgene/xgene_enet_main.c b/drivers/net/ethernet/apm/xgene/xgene_enet_main.c index cc3f9559a196..123669696184 100644 --- a/drivers/net/ethernet/apm/xgene/xgene_enet_main.c +++ b/drivers/net/ethernet/apm/xgene/xgene_enet_main.c @@ -639,9 +639,9 @@ static int xgene_enet_create_desc_rings(struct net_device *ndev) struct device *dev = ndev_to_dev(ndev); struct xgene_enet_desc_ring *rx_ring, *tx_ring, *cp_ring; struct xgene_enet_desc_ring *buf_pool = NULL; - u8 cpu_bufnum = 0, eth_bufnum = 0; - u8 bp_bufnum = 0x20; - u16 ring_id, ring_num = 0; + u8 cpu_bufnum = 0, eth_bufnum = START_ETH_BUFNUM; + u8 bp_bufnum = START_BP_BUFNUM; + u16 ring_id, ring_num = START_RING_NUM; int ret; /* allocate rx descriptor ring */ diff --git a/drivers/net/ethernet/apm/xgene/xgene_enet_main.h b/drivers/net/ethernet/apm/xgene/xgene_enet_main.h index dba647d35740..f9958fae6ffd 100644 --- a/drivers/net/ethernet/apm/xgene/xgene_enet_main.h +++ b/drivers/net/ethernet/apm/xgene/xgene_enet_main.h @@ -38,6 +38,9 @@ #define SKB_BUFFER_SIZE (XGENE_ENET_MAX_MTU - NET_IP_ALIGN) #define NUM_PKT_BUF 64 #define NUM_BUFPOOL 32 +#define START_ETH_BUFNUM 2 +#define START_BP_BUFNUM 0x22 +#define START_RING_NUM 8 #define PHY_POLL_LINK_ON (10 * HZ) #define PHY_POLL_LINK_OFF (PHY_POLL_LINK_ON / 5) From 225112a56942c74f1e114587719fa2bd0d180b3e Mon Sep 17 00:00:00 2001 From: "lan,Tianyu" Date: Mon, 3 Nov 2014 01:53:01 -0800 Subject: [PATCH 132/371] Thermal/int3403: Fix thermal hysteresis unit conversion Thermal hysteresis represents a temperature difference. But the original code treats it as a temperature value, Convert it from tenths of degree Kelvin to Milli-Celsius by deducing 273200. This is not right. Kelvin and Celsius have same degree size. From temperature difference view, the conversion between tenths of degree Kelvin unit and Milli-Celsius unit is just to multiply 100. Signed-off-by: Lan Tianyu Acked-by: Srinivas Pandruvada Signed-off-by: Zhang Rui Signed-off-by: Eduardo Valentin --- drivers/thermal/int340x_thermal/int3403_thermal.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/drivers/thermal/int340x_thermal/int3403_thermal.c b/drivers/thermal/int340x_thermal/int3403_thermal.c index d20dba986f0f..6e9fb62eb817 100644 --- a/drivers/thermal/int340x_thermal/int3403_thermal.c +++ b/drivers/thermal/int340x_thermal/int3403_thermal.c @@ -92,7 +92,13 @@ static int sys_get_trip_hyst(struct thermal_zone_device *tzone, if (ACPI_FAILURE(status)) return -EIO; - *temp = DECI_KELVIN_TO_MILLI_CELSIUS(hyst, KELVIN_OFFSET); + /* + * Thermal hysteresis represents a temperature difference. + * Kelvin and Celsius have same degree size. So the + * conversion here between tenths of degree Kelvin unit + * and Milli-Celsius unit is just to multiply 100. + */ + *temp = hyst * 100; return 0; } From 809fd143de8805970eec02c27c0bc2622a6ecbda Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Thu, 23 Oct 2014 19:33:14 +0300 Subject: [PATCH 133/371] NFSv4: Ensure nfs_atomic_open set the dentry verifier on ENOENT If the OPEN rpc call to the server fails with an ENOENT call, nfs_atomic_open will create a negative dentry for that file, however it currently fails to call nfs_set_verifier(), thus causing the dentry to be immediately revalidated on the next call to nfs_lookup_revalidate() instead of following the usual lookup caching rules. Signed-off-by: Trond Myklebust --- fs/nfs/dir.c | 1 + 1 file changed, 1 insertion(+) diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c index 06e8cfcbb670..6e62155abf26 100644 --- a/fs/nfs/dir.c +++ b/fs/nfs/dir.c @@ -1527,6 +1527,7 @@ int nfs_atomic_open(struct inode *dir, struct dentry *dentry, case -ENOENT: d_drop(dentry); d_add(dentry, NULL); + nfs_set_verifier(dentry, nfs_save_change_attribute(dir)); break; case -EISDIR: case -ENOTDIR: From 7488cbc2568391d5e0b2bda8902a96b5dd7b1ea7 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Thu, 23 Oct 2014 19:22:31 +0300 Subject: [PATCH 134/371] Revert "NFS: remove BUG possibility in nfs4_open_and_get_state" This reverts commit f39c01047994e66e7f3d89ddb4c6141f23349d8d. --- fs/nfs/nfs4proc.c | 10 +++------- 1 file changed, 3 insertions(+), 7 deletions(-) diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 405bd95c1f58..8026197e2b9f 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -2233,13 +2233,9 @@ static int _nfs4_open_and_get_state(struct nfs4_opendata *opendata, ret = _nfs4_proc_open(opendata); if (ret != 0) { if (ret == -ENOENT) { - dentry = opendata->dentry; - if (dentry->d_inode) - d_delete(dentry); - else if (d_unhashed(dentry)) - d_add(dentry, NULL); - - nfs_set_verifier(dentry, + d_drop(opendata->dentry); + d_add(opendata->dentry, NULL); + nfs_set_verifier(opendata->dentry, nfs_save_change_attribute(opendata->dir->d_inode)); } goto out; From dca780016dab84d6ac500b1d84fdfe1628802a59 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Thu, 23 Oct 2014 19:23:03 +0300 Subject: [PATCH 135/371] Revert "NFS: nfs4_do_open should add negative results to the dcache." This reverts commit 4fa2c54b5198d09607a534e2fd436581064587ed. --- fs/nfs/nfs4proc.c | 9 +-------- 1 file changed, 1 insertion(+), 8 deletions(-) diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 8026197e2b9f..41b8fcbfdadd 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -2231,15 +2231,8 @@ static int _nfs4_open_and_get_state(struct nfs4_opendata *opendata, seq = raw_seqcount_begin(&sp->so_reclaim_seqcount); ret = _nfs4_proc_open(opendata); - if (ret != 0) { - if (ret == -ENOENT) { - d_drop(opendata->dentry); - d_add(opendata->dentry, NULL); - nfs_set_verifier(opendata->dentry, - nfs_save_change_attribute(opendata->dir->d_inode)); - } + if (ret != 0) goto out; - } state = nfs4_opendata_to_nfs4_state(opendata); ret = PTR_ERR(state); From 8bcdd9297d213c6f8c40b87423581cea0fbf37c2 Mon Sep 17 00:00:00 2001 From: Stephen Warren Date: Tue, 4 Nov 2014 20:27:17 -0700 Subject: [PATCH 136/371] MAINTAINERS: update bcm2835 entry Add Lee Jones as a new co-maintainer. The kernel.org repo moved to allow us both to push to it. Update MAINTAINERS to match. Signed-off-by: Stephen Warren Signed-off-by: Olof Johansson --- MAINTAINERS | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/MAINTAINERS b/MAINTAINERS index f155c2a1255e..7b690fc1e449 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -2072,8 +2072,9 @@ F: drivers/clocksource/bcm_kona_timer.c BROADCOM BCM2835 ARM ARCHITECTURE M: Stephen Warren +M: Lee Jones L: linux-rpi-kernel@lists.infradead.org (moderated for non-subscribers) -T: git git://git.kernel.org/pub/scm/linux/kernel/git/swarren/linux-rpi.git +T: git git://git.kernel.org/pub/scm/linux/kernel/git/rpi/linux-rpi.git S: Maintained N: bcm2835 From c922c4e87b9b5a3b50d4d17b96f189121430f511 Mon Sep 17 00:00:00 2001 From: Hui Wang Date: Wed, 5 Nov 2014 12:17:58 +0800 Subject: [PATCH 137/371] ALSA: hda - fix mute led problem for three HP laptops Without the fix, the mute led can't work on these three machines. After apply this fix, these three machines will fall back on the led control quirk as below, and through testing, the mute led works very well. PIN_QUIRK(0x10ec0282, 0x103c, "HP", ALC269_FIXUP_HP_LINE1_MIC1_LED, ALC282_STANDARD_PINS, {0x12, 0x90a60140}, ... BugLink: https://bugs.launchpad.net/bugs/1389497 Tested-by: TieFu Chen Cc: Kailang Yang Cc: stable@vger.kernel.org Signed-off-by: Hui Wang Signed-off-by: Takashi Iwai --- sound/pci/hda/patch_realtek.c | 3 --- 1 file changed, 3 deletions(-) diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c index ba72fffa7460..1af917f58a70 100644 --- a/sound/pci/hda/patch_realtek.c +++ b/sound/pci/hda/patch_realtek.c @@ -4744,9 +4744,6 @@ static const struct snd_pci_quirk alc269_fixup_tbl[] = { SND_PCI_QUIRK(0x103c, 0x2221, "HP", ALC269_FIXUP_HP_GPIO_MIC1_LED), SND_PCI_QUIRK(0x103c, 0x2225, "HP", ALC269_FIXUP_HP_GPIO_MIC1_LED), SND_PCI_QUIRK(0x103c, 0x2246, "HP", ALC269_FIXUP_HP_GPIO_MIC1_LED), - SND_PCI_QUIRK(0x103c, 0x2247, "HP", ALC269_FIXUP_HP_GPIO_MIC1_LED), - SND_PCI_QUIRK(0x103c, 0x2248, "HP", ALC269_FIXUP_HP_GPIO_MIC1_LED), - SND_PCI_QUIRK(0x103c, 0x2249, "HP", ALC269_FIXUP_HP_GPIO_MIC1_LED), SND_PCI_QUIRK(0x103c, 0x2253, "HP", ALC269_FIXUP_HP_GPIO_MIC1_LED), SND_PCI_QUIRK(0x103c, 0x2254, "HP", ALC269_FIXUP_HP_GPIO_MIC1_LED), SND_PCI_QUIRK(0x103c, 0x2255, "HP", ALC269_FIXUP_HP_GPIO_MIC1_LED), From a31b0c6c19bf28c54999c3cd8cc3a7c8ba565a45 Mon Sep 17 00:00:00 2001 From: Kristina Martsenko Date: Wed, 5 Nov 2014 02:22:41 +0200 Subject: [PATCH 138/371] mmc: core: fix card detection regression MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Since commit 89168b489915 ("mmc: core: restore detect line inversion semantics"), the SD card on i.MX28 (and possibly other) devices isn't detected and booting stops at: [ 4.120617] Waiting for root device /dev/mmcblk0p3... This is caused by the MMC_CAP2_CD_ACTIVE_HIGH flag being set incorrectly when the host controller doesn't use a GPIO for card detection (but instead uses a dedicated pin). In this case mmc_gpiod_request_cd() will return before assigning to the gpio_invert variable, leaving the variable uninitialized. The variable then gets used to set the flag. This patch fixes the issue by making sure gpio_invert is set to false when a GPIO isn't used. After this patch, i.MX28 boots fine. The MMC_CAP2_RO_ACTIVE_HIGH (write protect) flag is also set incorrectly for the exact same reason (it uses the same uninitialized variable), so this patch fixes that too. Fixes: 89168b489915 ("mmc: core: restore detect line inversion semantics") Reported-by: Stefan Wahren Signed-off-by: Kristina Martšenko Tested-by: Fabio Estevam Signed-off-by: Ulf Hansson --- drivers/mmc/core/host.c | 21 ++++++++------------- 1 file changed, 8 insertions(+), 13 deletions(-) diff --git a/drivers/mmc/core/host.c b/drivers/mmc/core/host.c index 03c53b72a2d6..270d58a4c43d 100644 --- a/drivers/mmc/core/host.c +++ b/drivers/mmc/core/host.c @@ -311,7 +311,8 @@ int mmc_of_parse(struct mmc_host *host) struct device_node *np; u32 bus_width; int len, ret; - bool cap_invert, gpio_invert; + bool cd_cap_invert, cd_gpio_invert = false; + bool ro_cap_invert, ro_gpio_invert = false; if (!host->parent || !host->parent->of_node) return 0; @@ -359,16 +360,13 @@ int mmc_of_parse(struct mmc_host *host) if (of_find_property(np, "non-removable", &len)) { host->caps |= MMC_CAP_NONREMOVABLE; } else { - if (of_property_read_bool(np, "cd-inverted")) - cap_invert = true; - else - cap_invert = false; + cd_cap_invert = of_property_read_bool(np, "cd-inverted"); if (of_find_property(np, "broken-cd", &len)) host->caps |= MMC_CAP_NEEDS_POLL; ret = mmc_gpiod_request_cd(host, "cd", 0, true, - 0, &gpio_invert); + 0, &cd_gpio_invert); if (ret) { if (ret == -EPROBE_DEFER) return ret; @@ -391,17 +389,14 @@ int mmc_of_parse(struct mmc_host *host) * both inverted, the end result is that the CD line is * not inverted. */ - if (cap_invert ^ gpio_invert) + if (cd_cap_invert ^ cd_gpio_invert) host->caps2 |= MMC_CAP2_CD_ACTIVE_HIGH; } /* Parse Write Protection */ - if (of_property_read_bool(np, "wp-inverted")) - cap_invert = true; - else - cap_invert = false; + ro_cap_invert = of_property_read_bool(np, "wp-inverted"); - ret = mmc_gpiod_request_ro(host, "wp", 0, false, 0, &gpio_invert); + ret = mmc_gpiod_request_ro(host, "wp", 0, false, 0, &ro_gpio_invert); if (ret) { if (ret == -EPROBE_DEFER) goto out; @@ -414,7 +409,7 @@ int mmc_of_parse(struct mmc_host *host) dev_info(host->parent, "Got WP GPIO\n"); /* See the comment on CD inversion above */ - if (cap_invert ^ gpio_invert) + if (ro_cap_invert ^ ro_gpio_invert) host->caps2 |= MMC_CAP2_RO_ACTIVE_HIGH; if (of_find_property(np, "cap-sd-highspeed", &len)) From d29b9d7ed76c0b961603ca692b8a562556a20212 Mon Sep 17 00:00:00 2001 From: Nadav Amit Date: Sun, 2 Nov 2014 11:54:47 +0200 Subject: [PATCH 139/371] KVM: x86: Fix uninitialized op->type for some immediate values The emulator could reuse an op->type from a previous instruction for some immediate values. If it mistakenly considers the operands as memory operands, it will performs a memory read and overwrite op->val. Consider for instance the ROR instruction - src2 (the number of times) would be read from memory instead of being used as immediate. Mark every immediate operand as such to avoid this problem. Cc: stable@vger.kernel.org Fixes: c44b4c6ab80eef3a9c52c7b3f0c632942e6489aa Signed-off-by: Nadav Amit Signed-off-by: Paolo Bonzini --- arch/x86/kvm/emulate.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c index 5edf088ca51e..9f8a2faf5040 100644 --- a/arch/x86/kvm/emulate.c +++ b/arch/x86/kvm/emulate.c @@ -4287,6 +4287,7 @@ static int decode_operand(struct x86_emulate_ctxt *ctxt, struct operand *op, fetch_register_operand(op); break; case OpCL: + op->type = OP_IMM; op->bytes = 1; op->val = reg_read(ctxt, VCPU_REGS_RCX) & 0xff; break; @@ -4294,6 +4295,7 @@ static int decode_operand(struct x86_emulate_ctxt *ctxt, struct operand *op, rc = decode_imm(ctxt, op, 1, true); break; case OpOne: + op->type = OP_IMM; op->bytes = 1; op->val = 1; break; @@ -4352,21 +4354,27 @@ static int decode_operand(struct x86_emulate_ctxt *ctxt, struct operand *op, ctxt->memop.bytes = ctxt->op_bytes + 2; goto mem_common; case OpES: + op->type = OP_IMM; op->val = VCPU_SREG_ES; break; case OpCS: + op->type = OP_IMM; op->val = VCPU_SREG_CS; break; case OpSS: + op->type = OP_IMM; op->val = VCPU_SREG_SS; break; case OpDS: + op->type = OP_IMM; op->val = VCPU_SREG_DS; break; case OpFS: + op->type = OP_IMM; op->val = VCPU_SREG_FS; break; case OpGS: + op->type = OP_IMM; op->val = VCPU_SREG_GS; break; case OpImplicit: From 0725dda207e95ff25f1aa01432250323e0ec49d6 Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Wed, 5 Nov 2014 15:08:49 +0100 Subject: [PATCH 140/371] ALSA: usb-audio: Fix device_del() sysfs warnings at disconnect Some USB-audio devices show weird sysfs warnings at disconnecting the devices, e.g. usb 1-3: USB disconnect, device number 3 ------------[ cut here ]------------ WARNING: CPU: 0 PID: 973 at fs/sysfs/group.c:216 device_del+0x39/0x180() sysfs group ffffffff8183df40 not found for kobject 'midiC1D0' Call Trace: [] ? dump_stack+0x49/0x71 [] ? warn_slowpath_common+0x82/0xb0 [] ? warn_slowpath_fmt+0x45/0x50 [] ? device_del+0x39/0x180 [] ? device_unregister+0x9/0x20 [] ? device_destroy+0x34/0x40 [] ? snd_unregister_device+0x7f/0xd0 [snd] [] ? snd_rawmidi_dev_disconnect+0xce/0x100 [snd_rawmidi] [] ? snd_device_disconnect+0x62/0x90 [snd] [] ? snd_device_disconnect_all+0x3c/0x60 [snd] [] ? snd_card_disconnect+0x124/0x1a0 [snd] [] ? usb_audio_disconnect+0x88/0x1c0 [snd_usb_audio] [] ? usb_unbind_interface+0x5e/0x1b0 [usbcore] [] ? __device_release_driver+0x79/0xf0 [] ? device_release_driver+0x25/0x40 [] ? bus_remove_device+0xf1/0x130 [] ? device_del+0x109/0x180 [] ? usb_disable_device+0x95/0x1f0 [usbcore] [] ? usb_disconnect+0x8f/0x190 [usbcore] [] ? hub_thread+0x539/0x13a0 [usbcore] [] ? sched_clock_local+0x15/0x80 [] ? sched_clock_cpu+0xb8/0xd0 [] ? bit_waitqueue+0xb0/0xb0 [] ? usb_port_resume+0x430/0x430 [usbcore] [] ? usb_port_resume+0x430/0x430 [usbcore] [] ? kthread+0xce/0xf0 [] ? kthread_create_on_node+0x1c0/0x1c0 [] ? ret_from_fork+0x7c/0xb0 [] ? kthread_create_on_node+0x1c0/0x1c0 ---[ end trace 40b1928d1136b91e ]--- This comes from the fact that usb-audio driver may receive the disconnect callback multiple times, per each usb interface. When a device has both audio and midi interfaces, it gets called twice, and currently the driver tries to release resources at the last call. At this point, the first parent interface has been already deleted, thus deleting a child of the first parent hits such a warning. For fixing this problem, we need to call snd_card_disconnect() and cancel pending operations at the very first disconnect while the release of the whole objects waits until the last disconnect call. Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=80931 Reported-and-tested-by: Tomas Gayoso Reported-and-tested-by: Chris J Arges Cc: Signed-off-by: Takashi Iwai --- sound/usb/card.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/sound/usb/card.c b/sound/usb/card.c index 7ecd0e8a5c51..f61ebb17cc64 100644 --- a/sound/usb/card.c +++ b/sound/usb/card.c @@ -591,18 +591,19 @@ static void snd_usb_audio_disconnect(struct usb_device *dev, { struct snd_card *card; struct list_head *p; + bool was_shutdown; if (chip == (void *)-1L) return; card = chip->card; down_write(&chip->shutdown_rwsem); + was_shutdown = chip->shutdown; chip->shutdown = 1; up_write(&chip->shutdown_rwsem); mutex_lock(®ister_mutex); - chip->num_interfaces--; - if (chip->num_interfaces <= 0) { + if (!was_shutdown) { struct snd_usb_endpoint *ep; snd_card_disconnect(card); @@ -622,6 +623,10 @@ static void snd_usb_audio_disconnect(struct usb_device *dev, list_for_each(p, &chip->mixer_list) { snd_usb_mixer_disconnect(p); } + } + + chip->num_interfaces--; + if (chip->num_interfaces <= 0) { usb_chip[chip->index] = NULL; mutex_unlock(®ister_mutex); snd_card_free_when_closed(card); From 97b56be10352a70c82dc51f187f6a77ffde50e40 Mon Sep 17 00:00:00 2001 From: Catalin Marinas Date: Wed, 5 Nov 2014 16:26:35 +0000 Subject: [PATCH 141/371] arm64: compat: Enable bpf syscall Following the arm32 commit 2d605a302972 (ARM: enable bpf syscall), wire this syscall for arm64 compat as well. Signed-off-by: Catalin Marinas --- arch/arm64/include/asm/unistd32.h | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/arm64/include/asm/unistd32.h b/arch/arm64/include/asm/unistd32.h index da1f06b535e3..9dfdac4a74a1 100644 --- a/arch/arm64/include/asm/unistd32.h +++ b/arch/arm64/include/asm/unistd32.h @@ -792,3 +792,5 @@ __SYSCALL(__NR_renameat2, sys_renameat2) __SYSCALL(__NR_getrandom, sys_getrandom) #define __NR_memfd_create 385 __SYSCALL(__NR_memfd_create, sys_memfd_create) +#define __NR_bpf 386 +__SYSCALL(__NR_bpf, sys_bpf) From 85be07c32496dc264661308e4d9d4e9ccaff8072 Mon Sep 17 00:00:00 2001 From: Borislav Petkov Date: Wed, 5 Nov 2014 17:28:06 +0100 Subject: [PATCH 142/371] x86, microcode: Fix accessing dis_ucode_ldr on 32-bit We should be accessing it through a pointer, like on the BSP. Tested-by: Richard Hendershot Fixes: 65cef1311d5d ("x86, microcode: Add a disable chicken bit") Cc: # v3.15+ Signed-off-by: Borislav Petkov --- arch/x86/kernel/cpu/microcode/core_early.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/x86/kernel/cpu/microcode/core_early.c b/arch/x86/kernel/cpu/microcode/core_early.c index 5f28a64e71ea..2c017f242a78 100644 --- a/arch/x86/kernel/cpu/microcode/core_early.c +++ b/arch/x86/kernel/cpu/microcode/core_early.c @@ -124,7 +124,7 @@ void __init load_ucode_bsp(void) static bool check_loader_disabled_ap(void) { #ifdef CONFIG_X86_32 - return __pa_nodebug(dis_ucode_ldr); + return *((bool *)__pa_nodebug(&dis_ucode_ldr)); #else return dis_ucode_ldr; #endif From 2d39ad649eca1e8a993f4fda244fe17ecea7a38d Mon Sep 17 00:00:00 2001 From: Will Deacon Date: Wed, 5 Nov 2014 16:47:31 +0000 Subject: [PATCH 143/371] arm64: defconfig: update defconfig for 3.18 This patch enables a few things missing from our defconfig: - PCI and MSI, including support for the x-gene host controller - BPF JIT - SPI, GPIO and MMC for Seattle - GPIO for x-gene - USB for Juno - RTC It also removes HMC_DRV, which was being built as a module for some reason. Signed-off-by: Will Deacon Signed-off-by: Catalin Marinas --- arch/arm64/configs/defconfig | 26 ++++++++++++++++++++++++-- 1 file changed, 24 insertions(+), 2 deletions(-) diff --git a/arch/arm64/configs/defconfig b/arch/arm64/configs/defconfig index 4ce602c2c6de..dd301be89ecc 100644 --- a/arch/arm64/configs/defconfig +++ b/arch/arm64/configs/defconfig @@ -35,6 +35,9 @@ CONFIG_MODULE_UNLOAD=y CONFIG_ARCH_THUNDER=y CONFIG_ARCH_VEXPRESS=y CONFIG_ARCH_XGENE=y +CONFIG_PCI=y +CONFIG_PCI_MSI=y +CONFIG_PCI_XGENE=y CONFIG_SMP=y CONFIG_PREEMPT=y CONFIG_KSM=y @@ -52,6 +55,7 @@ CONFIG_IP_PNP_DHCP=y CONFIG_IP_PNP_BOOTP=y # CONFIG_INET_LRO is not set # CONFIG_IPV6 is not set +CONFIG_BPF_JIT=y # CONFIG_WIRELESS is not set CONFIG_NET_9P=y CONFIG_NET_9P_VIRTIO=y @@ -65,16 +69,17 @@ CONFIG_VIRTIO_BLK=y CONFIG_BLK_DEV_SD=y # CONFIG_SCSI_LOWLEVEL is not set CONFIG_ATA=y +CONFIG_SATA_AHCI=y +CONFIG_SATA_AHCI_PLATFORM=y CONFIG_AHCI_XGENE=y -CONFIG_PHY_XGENE=y CONFIG_PATA_PLATFORM=y CONFIG_PATA_OF_PLATFORM=y CONFIG_NETDEVICES=y CONFIG_TUN=y CONFIG_VIRTIO_NET=y +CONFIG_NET_XGENE=y CONFIG_SMC91X=y CONFIG_SMSC911X=y -CONFIG_NET_XGENE=y # CONFIG_WLAN is not set CONFIG_INPUT_EVDEV=y # CONFIG_SERIO_SERPORT is not set @@ -87,6 +92,11 @@ CONFIG_SERIAL_AMBA_PL011_CONSOLE=y CONFIG_SERIAL_OF_PLATFORM=y CONFIG_VIRTIO_CONSOLE=y # CONFIG_HW_RANDOM is not set +# CONFIG_HMC_DRV is not set +CONFIG_SPI=y +CONFIG_SPI_PL022=y +CONFIG_GPIO_PL061=y +CONFIG_GPIO_XGENE=y # CONFIG_HWMON is not set CONFIG_REGULATOR=y CONFIG_REGULATOR_FIXED_VOLTAGE=y @@ -97,13 +107,25 @@ CONFIG_LOGO=y # CONFIG_LOGO_LINUX_MONO is not set # CONFIG_LOGO_LINUX_VGA16 is not set CONFIG_USB=y +CONFIG_USB_EHCI_HCD=y +CONFIG_USB_EHCI_HCD_PLATFORM=y CONFIG_USB_ISP1760_HCD=y +CONFIG_USB_OHCI_HCD=y +CONFIG_USB_OHCI_HCD_PLATFORM=y CONFIG_USB_STORAGE=y +CONFIG_USB_ULPI=y CONFIG_MMC=y CONFIG_MMC_ARMMMCI=y +CONFIG_MMC_SDHCI=y +CONFIG_MMC_SDHCI_PLTFM=y +CONFIG_MMC_SPI=y +CONFIG_RTC_CLASS=y +CONFIG_RTC_DRV_EFI=y +CONFIG_RTC_DRV_XGENE=y CONFIG_VIRTIO_BALLOON=y CONFIG_VIRTIO_MMIO=y # CONFIG_IOMMU_SUPPORT is not set +CONFIG_PHY_XGENE=y CONFIG_EXT2_FS=y CONFIG_EXT3_FS=y # CONFIG_EXT3_DEFAULTS_TO_ORDERED is not set From 4a53d3afa00b0b74b0e49b147902a41e55b2e715 Mon Sep 17 00:00:00 2001 From: Lars-Peter Clausen Date: Thu, 25 Sep 2014 15:27:00 +0100 Subject: [PATCH 144/371] staging:iio:ad5933: Fix NULL pointer deref when enabling buffer In older versions of the IIO framework it was possible to pass a completely different set of channels to iio_buffer_register() as the one that is assigned to the IIO device. Commit 959d2952d124 ("staging:iio: make iio_sw_buffer_preenable much more general.") introduced a restriction that requires that the set of channels that is passed to iio_buffer_register() is a subset of the channels assigned to the IIO device as the IIO core will use the list of channels that is assigned to the device to lookup a channel by scan index in iio_compute_scan_bytes(). If it can not find the channel the function will crash. This patch fixes the issue by making sure that the same set of channels is assigned to the IIO device and passed to iio_buffer_register(). Fixes the follow NULL pointer derefernce kernel crash: Unable to handle kernel NULL pointer dereference at virtual address 00000016 pgd = d53d0000 [00000016] *pgd=1534e831, *pte=00000000, *ppte=00000000 Internal error: Oops: 17 [#1] PREEMPT SMP ARM Modules linked in: CPU: 1 PID: 1626 Comm: bash Not tainted 3.15.0-19969-g2a180eb-dirty #9545 task: d6c124c0 ti: d539a000 task.ti: d539a000 PC is at iio_compute_scan_bytes+0x34/0xa8 LR is at iio_compute_scan_bytes+0x34/0xa8 pc : [] lr : [] psr: 60070013 sp : d539beb8 ip : 00000001 fp : 00000000 r10: 00000002 r9 : 00000000 r8 : 00000001 r7 : 00000000 r6 : d6dc8800 r5 : d7571000 r4 : 00000002 r3 : d7571000 r2 : 00000044 r1 : 00000001 r0 : 00000000 Flags: nZCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment user Control: 18c5387d Table: 153d004a DAC: 00000015 Process bash (pid: 1626, stack limit = 0xd539a240) Stack: (0xd539beb8 to 0xd539c000) bea0: c02fc0e4 d7571000 bec0: d76c1640 d6dc8800 d757117c 00000000 d757112c c0305b04 d76c1690 d76c1640 bee0: d7571188 00000002 00000000 d7571000 d539a000 00000000 000dd1c8 c0305d54 bf00: d7571010 0160b868 00000002 c69d3900 d7573278 d7573308 c69d3900 c01ece90 bf20: 00000002 c0103fac c0103f6c d539bf88 00000002 c69d3b00 c69d3b0c c0103468 bf40: 00000000 00000000 d7694a00 00000002 000af408 d539bf88 c000dd84 c00b2f94 bf60: d7694a00 000af408 00000002 d7694a00 d7694a00 00000002 000af408 c000dd84 bf80: 00000000 c00b32d0 00000000 00000000 00000002 b6f1aa78 00000002 000af408 bfa0: 00000004 c000dc00 b6f1aa78 00000002 00000001 000af408 00000002 00000000 bfc0: b6f1aa78 00000002 000af408 00000004 be806a4c 000a6094 00000000 000dd1c8 bfe0: 00000000 be8069cc b6e8ab77 b6ec125c 40070010 00000001 22940489 154a5007 [] (iio_compute_scan_bytes) from [] (__iio_update_buffers+0x248/0x438) [] (__iio_update_buffers) from [] (iio_buffer_store_enable+0x60/0x7c) [] (iio_buffer_store_enable) from [] (dev_attr_store+0x18/0x24) [] (dev_attr_store) from [] (sysfs_kf_write+0x40/0x4c) [] (sysfs_kf_write) from [] (kernfs_fop_write+0x110/0x154) [] (kernfs_fop_write) from [] (vfs_write+0xd0/0x160) [] (vfs_write) from [] (SyS_write+0x40/0x78) [] (SyS_write) from [] (ret_fast_syscall+0x0/0x30) Code: ea00000e e1a01008 e1a00005 ebfff6fc (e5d0a016) Fixes: 959d2952d124 ("staging:iio: make iio_sw_buffer_preenable much more general.") Signed-off-by: Lars-Peter Clausen Cc: Stable@vger.kernel.org Signed-off-by: Jonathan Cameron --- drivers/staging/iio/impedance-analyzer/ad5933.c | 11 ++++------- 1 file changed, 4 insertions(+), 7 deletions(-) diff --git a/drivers/staging/iio/impedance-analyzer/ad5933.c b/drivers/staging/iio/impedance-analyzer/ad5933.c index d0c89d0457de..9a6665dcf72b 100644 --- a/drivers/staging/iio/impedance-analyzer/ad5933.c +++ b/drivers/staging/iio/impedance-analyzer/ad5933.c @@ -115,6 +115,7 @@ static const struct iio_chan_spec ad5933_channels[] = { .channel = 0, .info_mask_separate = BIT(IIO_CHAN_INFO_PROCESSED), .address = AD5933_REG_TEMP_DATA, + .scan_index = -1, .scan_type = { .sign = 's', .realbits = 14, @@ -125,8 +126,6 @@ static const struct iio_chan_spec ad5933_channels[] = { .indexed = 1, .channel = 0, .extend_name = "real_raw", - .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | - BIT(IIO_CHAN_INFO_SCALE), .address = AD5933_REG_REAL_DATA, .scan_index = 0, .scan_type = { @@ -139,8 +138,6 @@ static const struct iio_chan_spec ad5933_channels[] = { .indexed = 1, .channel = 0, .extend_name = "imag_raw", - .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | - BIT(IIO_CHAN_INFO_SCALE), .address = AD5933_REG_IMAG_DATA, .scan_index = 1, .scan_type = { @@ -749,14 +746,14 @@ static int ad5933_probe(struct i2c_client *client, indio_dev->name = id->name; indio_dev->modes = INDIO_DIRECT_MODE; indio_dev->channels = ad5933_channels; - indio_dev->num_channels = 1; /* only register temp0_input */ + indio_dev->num_channels = ARRAY_SIZE(ad5933_channels); ret = ad5933_register_ring_funcs_and_init(indio_dev); if (ret) goto error_disable_reg; - /* skip temp0_input, register in0_(real|imag)_raw */ - ret = iio_buffer_register(indio_dev, &ad5933_channels[1], 2); + ret = iio_buffer_register(indio_dev, ad5933_channels, + ARRAY_SIZE(ad5933_channels)); if (ret) goto error_unreg_ring; From 97fb3033128958457f77456dc677a64bce8d33ae Mon Sep 17 00:00:00 2001 From: Lars-Peter Clausen Date: Thu, 25 Sep 2014 15:27:00 +0100 Subject: [PATCH 145/371] staging:iio:ad5933: Drop "raw" from channel names "raw" is the name of a channel property, but should not be part of the channel name itself. Signed-off-by: Lars-Peter Clausen Cc: Signed-off-by: Jonathan Cameron --- drivers/staging/iio/impedance-analyzer/ad5933.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/staging/iio/impedance-analyzer/ad5933.c b/drivers/staging/iio/impedance-analyzer/ad5933.c index 9a6665dcf72b..b6bd609c3655 100644 --- a/drivers/staging/iio/impedance-analyzer/ad5933.c +++ b/drivers/staging/iio/impedance-analyzer/ad5933.c @@ -125,7 +125,7 @@ static const struct iio_chan_spec ad5933_channels[] = { .type = IIO_VOLTAGE, .indexed = 1, .channel = 0, - .extend_name = "real_raw", + .extend_name = "real", .address = AD5933_REG_REAL_DATA, .scan_index = 0, .scan_type = { @@ -137,7 +137,7 @@ static const struct iio_chan_spec ad5933_channels[] = { .type = IIO_VOLTAGE, .indexed = 1, .channel = 0, - .extend_name = "imag_raw", + .extend_name = "imag", .address = AD5933_REG_IMAG_DATA, .scan_index = 1, .scan_type = { From c6b4cac2d9cbe7891260b55b2871d269d89d1ae7 Mon Sep 17 00:00:00 2001 From: Robin van der Gracht Date: Mon, 29 Sep 2014 15:00:07 +0200 Subject: [PATCH 146/371] iio: st_sensors: Fix buffer copy Use byte_for_channel as iterator to properly initialize the buffer. Signed-off-by: Robin van der Gracht Acked-by: Denis Ciocca Signed-off-by: Jonathan Cameron Cc: --- drivers/iio/common/st_sensors/st_sensors_buffer.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/iio/common/st_sensors/st_sensors_buffer.c b/drivers/iio/common/st_sensors/st_sensors_buffer.c index 1665c8e4b62b..e18bc6782256 100644 --- a/drivers/iio/common/st_sensors/st_sensors_buffer.c +++ b/drivers/iio/common/st_sensors/st_sensors_buffer.c @@ -71,7 +71,7 @@ int st_sensors_get_buffer_element(struct iio_dev *indio_dev, u8 *buf) goto st_sensors_free_memory; } - for (i = 0; i < n * num_data_channels; i++) { + for (i = 0; i < n * byte_for_channel; i++) { if (i < n) buf[i] = rx_array[i]; else From 4748119f1889b4ce96c84831ad0581598081b46f Mon Sep 17 00:00:00 2001 From: Fabio Estevam Date: Sat, 4 Oct 2014 08:50:21 -0300 Subject: [PATCH 147/371] iio: adc: mxs-lradc: Disable the clock on probe failure We should disable lradc->clk in the case of errors in the probe function. Signed-off-by: Fabio Estevam Reviewed-by: Marek Vasut Signed-off-by: Jonathan Cameron Cc: --- drivers/staging/iio/adc/mxs-lradc.c | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-) diff --git a/drivers/staging/iio/adc/mxs-lradc.c b/drivers/staging/iio/adc/mxs-lradc.c index 32a19264a170..2a29b9baec0d 100644 --- a/drivers/staging/iio/adc/mxs-lradc.c +++ b/drivers/staging/iio/adc/mxs-lradc.c @@ -1559,14 +1559,16 @@ static int mxs_lradc_probe(struct platform_device *pdev) /* Grab all IRQ sources */ for (i = 0; i < of_cfg->irq_count; i++) { lradc->irq[i] = platform_get_irq(pdev, i); - if (lradc->irq[i] < 0) - return lradc->irq[i]; + if (lradc->irq[i] < 0) { + ret = lradc->irq[i]; + goto err_clk; + } ret = devm_request_irq(dev, lradc->irq[i], mxs_lradc_handle_irq, 0, of_cfg->irq_name[i], iio); if (ret) - return ret; + goto err_clk; } lradc->vref_mv = of_cfg->vref_mv; @@ -1588,7 +1590,7 @@ static int mxs_lradc_probe(struct platform_device *pdev) &mxs_lradc_trigger_handler, &mxs_lradc_buffer_ops); if (ret) - return ret; + goto err_clk; ret = mxs_lradc_trigger_init(iio); if (ret) @@ -1643,6 +1645,8 @@ err_dev: mxs_lradc_trigger_remove(iio); err_trig: iio_triggered_buffer_cleanup(iio); +err_clk: + clk_disable_unprepare(lradc->clk); return ret; } From 03045bcf312961cc75b2719aad6b4d69907884db Mon Sep 17 00:00:00 2001 From: Dan Murphy Date: Mon, 20 Oct 2014 14:52:02 -0500 Subject: [PATCH 148/371] iio: tsl4531: Fix compiler error when CONFIG_PM_OPS is not defined MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Fix the compiler error when the CONFIG_PM_OPS flag is not set. drivers/iio/light/tsl4531.c:235:8: error: ‘tsl4531_suspend’ undeclared here (not in a function) drivers/iio/light/tsl4531.c:235:8: error: ‘tsl4531_resume’ undeclared here (not in a function) Signed-off-by: Dan Murphy Signed-off-by: Jonathan Cameron --- drivers/iio/light/tsl4531.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/drivers/iio/light/tsl4531.c b/drivers/iio/light/tsl4531.c index a15006efa137..0763b8632573 100644 --- a/drivers/iio/light/tsl4531.c +++ b/drivers/iio/light/tsl4531.c @@ -230,9 +230,12 @@ static int tsl4531_resume(struct device *dev) return i2c_smbus_write_byte_data(to_i2c_client(dev), TSL4531_CONTROL, TSL4531_MODE_NORMAL); } -#endif static SIMPLE_DEV_PM_OPS(tsl4531_pm_ops, tsl4531_suspend, tsl4531_resume); +#define TSL4531_PM_OPS (&tsl4531_pm_ops) +#else +#define TSL4531_PM_OPS NULL +#endif static const struct i2c_device_id tsl4531_id[] = { { "tsl4531", 0 }, @@ -243,7 +246,7 @@ MODULE_DEVICE_TABLE(i2c, tsl4531_id); static struct i2c_driver tsl4531_driver = { .driver = { .name = TSL4531_DRV_NAME, - .pm = &tsl4531_pm_ops, + .pm = TSL4531_PM_OPS, .owner = THIS_MODULE, }, .probe = tsl4531_probe, From 25afffe16d07909197f99163ca7cd1f80fb5cbdd Mon Sep 17 00:00:00 2001 From: Daniel Baluta Date: Fri, 10 Oct 2014 15:53:00 +0100 Subject: [PATCH 149/371] io: accel: kxcjk-1013: Fix iio_event_spec direction Because IIO_EV_DIR_* are not bitmasks but enums, IIO_EV_DIR_RISING | IIO_EV_DIR_FALLING is not equal with IIO_EV_DIR_EITHER. This could lead to potential misformatted sysfs attributes like: * in_accel_x_thresh_(null)_en * in_accel_x_thresh_(null)_period * in_accel_x_thresh_(null)_value or even memory corruption. Fixes: b4b491c083 (iio: accel: kxcjk-1013: Support threshold) Signed-off-by: Daniel Baluta Cc: Signed-off-by: Jonathan Cameron --- drivers/iio/accel/kxcjk-1013.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/iio/accel/kxcjk-1013.c b/drivers/iio/accel/kxcjk-1013.c index 98909a9e284e..a23e58c4ed99 100644 --- a/drivers/iio/accel/kxcjk-1013.c +++ b/drivers/iio/accel/kxcjk-1013.c @@ -894,7 +894,7 @@ static const struct attribute_group kxcjk1013_attrs_group = { static const struct iio_event_spec kxcjk1013_event = { .type = IIO_EV_TYPE_THRESH, - .dir = IIO_EV_DIR_RISING | IIO_EV_DIR_FALLING, + .dir = IIO_EV_DIR_EITHER, .mask_separate = BIT(IIO_EV_INFO_VALUE) | BIT(IIO_EV_INFO_ENABLE) | BIT(IIO_EV_INFO_PERIOD) From f73cde600d410ad4b31362a9c348016e40a146ea Mon Sep 17 00:00:00 2001 From: George McCollister Date: Fri, 31 Oct 2014 15:44:00 +0000 Subject: [PATCH 150/371] iio: as3935: allocate correct iio_device size Signed-off-by: George McCollister Acked-by: Hartmut Knaack Cc: Signed-off-by: Jonathan Cameron --- drivers/iio/proximity/as3935.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/iio/proximity/as3935.c b/drivers/iio/proximity/as3935.c index 5e780ef206f3..8349cc0fdf66 100644 --- a/drivers/iio/proximity/as3935.c +++ b/drivers/iio/proximity/as3935.c @@ -330,7 +330,7 @@ static int as3935_probe(struct spi_device *spi) return -EINVAL; } - indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(st)); + indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*st)); if (!indio_dev) return -ENOMEM; From e10554738cab4224e097c2f9d975ea781a4fcde4 Mon Sep 17 00:00:00 2001 From: Lars-Peter Clausen Date: Tue, 4 Nov 2014 18:03:14 +0100 Subject: [PATCH 151/371] staging:iio:ade7758: Fix NULL pointer deref when enabling buffer In older versions of the IIO framework it was possible to pass a completely different set of channels to iio_buffer_register() as the one that is assigned to the IIO device. Commit 959d2952d124 ("staging:iio: make iio_sw_buffer_preenable much more general.") introduced a restriction that requires that the set of channels that is passed to iio_buffer_register() is a subset of the channels assigned to the IIO device as the IIO core will use the list of channels that is assigned to the device to lookup a channel by scan index in iio_compute_scan_bytes(). If it can not find the channel the function will crash. This patch fixes the issue by making sure that the same set of channels is assigned to the IIO device and passed to iio_buffer_register(). Note that we need to remove the IIO_CHAN_INFO_RAW and IIO_CHAN_INFO_SCALE info attributes from the channels since we don't actually want those to be registered. Fixes the following crash: Unable to handle kernel NULL pointer dereference at virtual address 00000016 pgd = d2094000 [00000016] *pgd=16e39831, *pte=00000000, *ppte=00000000 Internal error: Oops: 17 [#1] PREEMPT SMP ARM Modules linked in: CPU: 1 PID: 1695 Comm: bash Not tainted 3.17.0-06329-g29461ee #9686 task: d7768040 ti: d5bd4000 task.ti: d5bd4000 PC is at iio_compute_scan_bytes+0x38/0xc0 LR is at iio_compute_scan_bytes+0x34/0xc0 pc : [] lr : [] psr: 60070013 sp : d5bd5ec0 ip : 00000000 fp : 00000000 r10: d769f934 r9 : 00000000 r8 : 00000001 r7 : 00000000 r6 : c8fc6240 r5 : d769f800 r4 : 00000000 r3 : d769f800 r2 : 00000000 r1 : ffffffff r0 : 00000000 Flags: nZCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment user Control: 18c5387d Table: 1209404a DAC: 00000015 Process bash (pid: 1695, stack limit = 0xd5bd4240) Stack: (0xd5bd5ec0 to 0xd5bd6000) 5ec0: d769f800 d7435640 c8fc6240 d769f984 00000000 c03175a4 d7435690 d7435640 5ee0: d769f990 00000002 00000000 d769f800 d5bd4000 00000000 000b43a8 c03177f4 5f00: d769f810 0162b8c8 00000002 c8fc7e00 d77f1d08 d77f1da8 c8fc7e00 c01faf1c 5f20: 00000002 c010694c c010690c d5bd5f88 00000002 c8fc6840 c8fc684c c0105e08 5f40: 00000000 00000000 d20d1580 00000002 000af408 d5bd5f88 c000de84 c00b76d4 5f60: d20d1580 000af408 00000002 d20d1580 d20d1580 00000002 000af408 c000de84 5f80: 00000000 c00b7a44 00000000 00000000 00000002 b6ebea78 00000002 000af408 5fa0: 00000004 c000dd00 b6ebea78 00000002 00000001 000af408 00000002 00000000 5fc0: b6ebea78 00000002 000af408 00000004 bee96a4c 000a6094 00000000 000b43a8 5fe0: 00000000 bee969cc b6e2eb77 b6e6525c 40070010 00000001 00000000 00000000 [] (iio_compute_scan_bytes) from [] (__iio_update_buffers+0x248/0x438) [] (__iio_update_buffers) from [] (iio_buffer_store_enable+0x60/0x7c) [] (iio_buffer_store_enable) from [] (dev_attr_store+0x18/0x24) [] (dev_attr_store) from [] (sysfs_kf_write+0x40/0x4c) [] (sysfs_kf_write) from [] (kernfs_fop_write+0x110/0x154) [] (kernfs_fop_write) from [] (vfs_write+0xbc/0x170) [] (vfs_write) from [] (SyS_write+0x40/0x78) [] (SyS_write) from [] (ret_fast_syscall+0x0/0x30) Fixes: 959d2952d124 ("staging:iio: make iio_sw_buffer_preenable much more general.") Signed-off-by: Lars-Peter Clausen Cc: Signed-off-by: Jonathan Cameron --- drivers/staging/iio/meter/ade7758.h | 1 - drivers/staging/iio/meter/ade7758_core.c | 33 ++---------------------- drivers/staging/iio/meter/ade7758_ring.c | 3 +-- 3 files changed, 3 insertions(+), 34 deletions(-) diff --git a/drivers/staging/iio/meter/ade7758.h b/drivers/staging/iio/meter/ade7758.h index 07318203a836..e8c98cf57070 100644 --- a/drivers/staging/iio/meter/ade7758.h +++ b/drivers/staging/iio/meter/ade7758.h @@ -119,7 +119,6 @@ struct ade7758_state { u8 *tx; u8 *rx; struct mutex buf_lock; - const struct iio_chan_spec *ade7758_ring_channels; struct spi_transfer ring_xfer[4]; struct spi_message ring_msg; /* diff --git a/drivers/staging/iio/meter/ade7758_core.c b/drivers/staging/iio/meter/ade7758_core.c index abc60067cd72..9eb79b7cb420 100644 --- a/drivers/staging/iio/meter/ade7758_core.c +++ b/drivers/staging/iio/meter/ade7758_core.c @@ -635,8 +635,6 @@ static const struct iio_chan_spec ade7758_channels[] = { .indexed = 1, .channel = 0, .extend_name = "raw", - .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), - .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE), .address = AD7758_WT(AD7758_PHASE_A, AD7758_VOLTAGE), .scan_index = 0, .scan_type = { @@ -649,8 +647,6 @@ static const struct iio_chan_spec ade7758_channels[] = { .indexed = 1, .channel = 0, .extend_name = "raw", - .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), - .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE), .address = AD7758_WT(AD7758_PHASE_A, AD7758_CURRENT), .scan_index = 1, .scan_type = { @@ -663,8 +659,6 @@ static const struct iio_chan_spec ade7758_channels[] = { .indexed = 1, .channel = 0, .extend_name = "apparent_raw", - .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), - .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE), .address = AD7758_WT(AD7758_PHASE_A, AD7758_APP_PWR), .scan_index = 2, .scan_type = { @@ -677,8 +671,6 @@ static const struct iio_chan_spec ade7758_channels[] = { .indexed = 1, .channel = 0, .extend_name = "active_raw", - .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), - .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE), .address = AD7758_WT(AD7758_PHASE_A, AD7758_ACT_PWR), .scan_index = 3, .scan_type = { @@ -691,8 +683,6 @@ static const struct iio_chan_spec ade7758_channels[] = { .indexed = 1, .channel = 0, .extend_name = "reactive_raw", - .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), - .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE), .address = AD7758_WT(AD7758_PHASE_A, AD7758_REACT_PWR), .scan_index = 4, .scan_type = { @@ -705,8 +695,6 @@ static const struct iio_chan_spec ade7758_channels[] = { .indexed = 1, .channel = 1, .extend_name = "raw", - .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), - .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE), .address = AD7758_WT(AD7758_PHASE_B, AD7758_VOLTAGE), .scan_index = 5, .scan_type = { @@ -719,8 +707,6 @@ static const struct iio_chan_spec ade7758_channels[] = { .indexed = 1, .channel = 1, .extend_name = "raw", - .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), - .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE), .address = AD7758_WT(AD7758_PHASE_B, AD7758_CURRENT), .scan_index = 6, .scan_type = { @@ -733,8 +719,6 @@ static const struct iio_chan_spec ade7758_channels[] = { .indexed = 1, .channel = 1, .extend_name = "apparent_raw", - .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), - .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE), .address = AD7758_WT(AD7758_PHASE_B, AD7758_APP_PWR), .scan_index = 7, .scan_type = { @@ -747,8 +731,6 @@ static const struct iio_chan_spec ade7758_channels[] = { .indexed = 1, .channel = 1, .extend_name = "active_raw", - .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), - .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE), .address = AD7758_WT(AD7758_PHASE_B, AD7758_ACT_PWR), .scan_index = 8, .scan_type = { @@ -761,8 +743,6 @@ static const struct iio_chan_spec ade7758_channels[] = { .indexed = 1, .channel = 1, .extend_name = "reactive_raw", - .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), - .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE), .address = AD7758_WT(AD7758_PHASE_B, AD7758_REACT_PWR), .scan_index = 9, .scan_type = { @@ -775,8 +755,6 @@ static const struct iio_chan_spec ade7758_channels[] = { .indexed = 1, .channel = 2, .extend_name = "raw", - .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), - .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE), .address = AD7758_WT(AD7758_PHASE_C, AD7758_VOLTAGE), .scan_index = 10, .scan_type = { @@ -789,8 +767,6 @@ static const struct iio_chan_spec ade7758_channels[] = { .indexed = 1, .channel = 2, .extend_name = "raw", - .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), - .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE), .address = AD7758_WT(AD7758_PHASE_C, AD7758_CURRENT), .scan_index = 11, .scan_type = { @@ -803,8 +779,6 @@ static const struct iio_chan_spec ade7758_channels[] = { .indexed = 1, .channel = 2, .extend_name = "apparent_raw", - .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), - .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE), .address = AD7758_WT(AD7758_PHASE_C, AD7758_APP_PWR), .scan_index = 12, .scan_type = { @@ -817,8 +791,6 @@ static const struct iio_chan_spec ade7758_channels[] = { .indexed = 1, .channel = 2, .extend_name = "active_raw", - .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), - .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE), .address = AD7758_WT(AD7758_PHASE_C, AD7758_ACT_PWR), .scan_index = 13, .scan_type = { @@ -831,8 +803,6 @@ static const struct iio_chan_spec ade7758_channels[] = { .indexed = 1, .channel = 2, .extend_name = "reactive_raw", - .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), - .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE), .address = AD7758_WT(AD7758_PHASE_C, AD7758_REACT_PWR), .scan_index = 14, .scan_type = { @@ -873,13 +843,14 @@ static int ade7758_probe(struct spi_device *spi) goto error_free_rx; } st->us = spi; - st->ade7758_ring_channels = &ade7758_channels[0]; mutex_init(&st->buf_lock); indio_dev->name = spi->dev.driver->name; indio_dev->dev.parent = &spi->dev; indio_dev->info = &ade7758_info; indio_dev->modes = INDIO_DIRECT_MODE; + indio_dev->channels = ade7758_channels; + indio_dev->num_channels = ARRAY_SIZE(ade7758_channels); ret = ade7758_configure_ring(indio_dev); if (ret) diff --git a/drivers/staging/iio/meter/ade7758_ring.c b/drivers/staging/iio/meter/ade7758_ring.c index c0accf8cce93..628e902dd815 100644 --- a/drivers/staging/iio/meter/ade7758_ring.c +++ b/drivers/staging/iio/meter/ade7758_ring.c @@ -85,7 +85,6 @@ static irqreturn_t ade7758_trigger_handler(int irq, void *p) **/ static int ade7758_ring_preenable(struct iio_dev *indio_dev) { - struct ade7758_state *st = iio_priv(indio_dev); unsigned channel; if (!bitmap_empty(indio_dev->active_scan_mask, indio_dev->masklength)) @@ -95,7 +94,7 @@ static int ade7758_ring_preenable(struct iio_dev *indio_dev) indio_dev->masklength); ade7758_write_waveform_type(&indio_dev->dev, - st->ade7758_ring_channels[channel].address); + indio_dev->channels[channel].address); return 0; } From 79fa64eb2ee8ccb4bcad7f54caa2699730b10b22 Mon Sep 17 00:00:00 2001 From: Lars-Peter Clausen Date: Tue, 4 Nov 2014 18:03:15 +0100 Subject: [PATCH 152/371] staging:iio:ade7758: Fix check if channels are enabled in prenable We should check if a channel is enabled, not if no channels are enabled. Fixes: 550268ca1111 ("staging:iio: scrap scan_count and ensure all drivers use active_scan_mask") Signed-off-by: Lars-Peter Clausen Cc: Signed-off-by: Jonathan Cameron --- drivers/staging/iio/meter/ade7758_ring.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/staging/iio/meter/ade7758_ring.c b/drivers/staging/iio/meter/ade7758_ring.c index 628e902dd815..6e9006490742 100644 --- a/drivers/staging/iio/meter/ade7758_ring.c +++ b/drivers/staging/iio/meter/ade7758_ring.c @@ -87,7 +87,7 @@ static int ade7758_ring_preenable(struct iio_dev *indio_dev) { unsigned channel; - if (!bitmap_empty(indio_dev->active_scan_mask, indio_dev->masklength)) + if (bitmap_empty(indio_dev->active_scan_mask, indio_dev->masklength)) return -EINVAL; channel = find_first_bit(indio_dev->active_scan_mask, From b598aacc29331e7e638cd509108600e916c6331b Mon Sep 17 00:00:00 2001 From: Lars-Peter Clausen Date: Tue, 4 Nov 2014 18:03:16 +0100 Subject: [PATCH 153/371] staging:iio:ade7758: Remove "raw" from channel name "raw" is a property of a channel, but should not be part of the name of channel. Signed-off-by: Lars-Peter Clausen Cc: Signed-off-by: Jonathan Cameron --- drivers/staging/iio/meter/ade7758_core.c | 24 +++++++++--------------- 1 file changed, 9 insertions(+), 15 deletions(-) diff --git a/drivers/staging/iio/meter/ade7758_core.c b/drivers/staging/iio/meter/ade7758_core.c index 9eb79b7cb420..fb373b89dcc2 100644 --- a/drivers/staging/iio/meter/ade7758_core.c +++ b/drivers/staging/iio/meter/ade7758_core.c @@ -634,7 +634,6 @@ static const struct iio_chan_spec ade7758_channels[] = { .type = IIO_VOLTAGE, .indexed = 1, .channel = 0, - .extend_name = "raw", .address = AD7758_WT(AD7758_PHASE_A, AD7758_VOLTAGE), .scan_index = 0, .scan_type = { @@ -646,7 +645,6 @@ static const struct iio_chan_spec ade7758_channels[] = { .type = IIO_CURRENT, .indexed = 1, .channel = 0, - .extend_name = "raw", .address = AD7758_WT(AD7758_PHASE_A, AD7758_CURRENT), .scan_index = 1, .scan_type = { @@ -658,7 +656,7 @@ static const struct iio_chan_spec ade7758_channels[] = { .type = IIO_POWER, .indexed = 1, .channel = 0, - .extend_name = "apparent_raw", + .extend_name = "apparent", .address = AD7758_WT(AD7758_PHASE_A, AD7758_APP_PWR), .scan_index = 2, .scan_type = { @@ -670,7 +668,7 @@ static const struct iio_chan_spec ade7758_channels[] = { .type = IIO_POWER, .indexed = 1, .channel = 0, - .extend_name = "active_raw", + .extend_name = "active", .address = AD7758_WT(AD7758_PHASE_A, AD7758_ACT_PWR), .scan_index = 3, .scan_type = { @@ -682,7 +680,7 @@ static const struct iio_chan_spec ade7758_channels[] = { .type = IIO_POWER, .indexed = 1, .channel = 0, - .extend_name = "reactive_raw", + .extend_name = "reactive", .address = AD7758_WT(AD7758_PHASE_A, AD7758_REACT_PWR), .scan_index = 4, .scan_type = { @@ -694,7 +692,6 @@ static const struct iio_chan_spec ade7758_channels[] = { .type = IIO_VOLTAGE, .indexed = 1, .channel = 1, - .extend_name = "raw", .address = AD7758_WT(AD7758_PHASE_B, AD7758_VOLTAGE), .scan_index = 5, .scan_type = { @@ -706,7 +703,6 @@ static const struct iio_chan_spec ade7758_channels[] = { .type = IIO_CURRENT, .indexed = 1, .channel = 1, - .extend_name = "raw", .address = AD7758_WT(AD7758_PHASE_B, AD7758_CURRENT), .scan_index = 6, .scan_type = { @@ -718,7 +714,7 @@ static const struct iio_chan_spec ade7758_channels[] = { .type = IIO_POWER, .indexed = 1, .channel = 1, - .extend_name = "apparent_raw", + .extend_name = "apparent", .address = AD7758_WT(AD7758_PHASE_B, AD7758_APP_PWR), .scan_index = 7, .scan_type = { @@ -730,7 +726,7 @@ static const struct iio_chan_spec ade7758_channels[] = { .type = IIO_POWER, .indexed = 1, .channel = 1, - .extend_name = "active_raw", + .extend_name = "active", .address = AD7758_WT(AD7758_PHASE_B, AD7758_ACT_PWR), .scan_index = 8, .scan_type = { @@ -742,7 +738,7 @@ static const struct iio_chan_spec ade7758_channels[] = { .type = IIO_POWER, .indexed = 1, .channel = 1, - .extend_name = "reactive_raw", + .extend_name = "reactive", .address = AD7758_WT(AD7758_PHASE_B, AD7758_REACT_PWR), .scan_index = 9, .scan_type = { @@ -754,7 +750,6 @@ static const struct iio_chan_spec ade7758_channels[] = { .type = IIO_VOLTAGE, .indexed = 1, .channel = 2, - .extend_name = "raw", .address = AD7758_WT(AD7758_PHASE_C, AD7758_VOLTAGE), .scan_index = 10, .scan_type = { @@ -766,7 +761,6 @@ static const struct iio_chan_spec ade7758_channels[] = { .type = IIO_CURRENT, .indexed = 1, .channel = 2, - .extend_name = "raw", .address = AD7758_WT(AD7758_PHASE_C, AD7758_CURRENT), .scan_index = 11, .scan_type = { @@ -778,7 +772,7 @@ static const struct iio_chan_spec ade7758_channels[] = { .type = IIO_POWER, .indexed = 1, .channel = 2, - .extend_name = "apparent_raw", + .extend_name = "apparent", .address = AD7758_WT(AD7758_PHASE_C, AD7758_APP_PWR), .scan_index = 12, .scan_type = { @@ -790,7 +784,7 @@ static const struct iio_chan_spec ade7758_channels[] = { .type = IIO_POWER, .indexed = 1, .channel = 2, - .extend_name = "active_raw", + .extend_name = "active", .address = AD7758_WT(AD7758_PHASE_C, AD7758_ACT_PWR), .scan_index = 13, .scan_type = { @@ -802,7 +796,7 @@ static const struct iio_chan_spec ade7758_channels[] = { .type = IIO_POWER, .indexed = 1, .channel = 2, - .extend_name = "reactive_raw", + .extend_name = "reactive", .address = AD7758_WT(AD7758_PHASE_C, AD7758_REACT_PWR), .scan_index = 14, .scan_type = { From ab699bc792ddbfbe022c67debf6c56d81ff67a80 Mon Sep 17 00:00:00 2001 From: Olof Johansson Date: Tue, 4 Nov 2014 22:28:12 -0800 Subject: [PATCH 154/371] ARM: dts: vf610: add SD node to cosmic dts Driver has been there since a while back, but the dts never seems to have been updated with the node (nor pinctrl). Do so now. Cc: Matt Porter Acked-by: Shawn Guo Acked-by: Stefan Agner Signed-off-by: Olof Johansson --- arch/arm/boot/dts/vf610-cosmic.dts | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) diff --git a/arch/arm/boot/dts/vf610-cosmic.dts b/arch/arm/boot/dts/vf610-cosmic.dts index 3fd1b74e1216..de1b453c2932 100644 --- a/arch/arm/boot/dts/vf610-cosmic.dts +++ b/arch/arm/boot/dts/vf610-cosmic.dts @@ -33,6 +33,13 @@ }; +&esdhc1 { + pinctrl-names = "default"; + pinctrl-0 = <&pinctrl_esdhc1>; + bus-width = <4>; + status = "okay"; +}; + &fec1 { phy-mode = "rmii"; pinctrl-names = "default"; @@ -42,6 +49,18 @@ &iomuxc { vf610-cosmic { + pinctrl_esdhc1: esdhc1grp { + fsl,pins = < + VF610_PAD_PTA24__ESDHC1_CLK 0x31ef + VF610_PAD_PTA25__ESDHC1_CMD 0x31ef + VF610_PAD_PTA26__ESDHC1_DAT0 0x31ef + VF610_PAD_PTA27__ESDHC1_DAT1 0x31ef + VF610_PAD_PTA28__ESDHC1_DATA2 0x31ef + VF610_PAD_PTA29__ESDHC1_DAT3 0x31ef + VF610_PAD_PTB28__GPIO_98 0x219d + >; + }; + pinctrl_fec1: fec1grp { fsl,pins = < VF610_PAD_PTC9__ENET_RMII1_MDC 0x30d2 From ac0225f94f2af14d5db5a3ca2e9b151bb5488a52 Mon Sep 17 00:00:00 2001 From: Greg Kroah-Hartman Date: Wed, 5 Nov 2014 11:12:17 -0800 Subject: [PATCH 155/371] Revert "storage: Replace magic number with define in usb_stor_euscsi_init()" This reverts commit bda9893c50fb56253d3c206c14e3f933e5f68b3c as it was incorrect. Reported-by: Mark Knibbs Signed-off-by: Greg Kroah-Hartman --- drivers/usb/storage/initializers.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/usb/storage/initializers.c b/drivers/usb/storage/initializers.c index 4bc2fc98636e..5a8b5ff1e45b 100644 --- a/drivers/usb/storage/initializers.c +++ b/drivers/usb/storage/initializers.c @@ -52,7 +52,7 @@ int usb_stor_euscsi_init(struct us_data *us) us->iobuf[0] = 0x1; result = usb_stor_control_msg(us, us->send_ctrl_pipe, 0x0C, USB_RECIP_INTERFACE | USB_TYPE_VENDOR, - 0x01, 0x0, us->iobuf, 0x1, USB_CTRL_SET_TIMEOUT); + 0x01, 0x0, us->iobuf, 0x1, 5000); usb_stor_dbg(us, "-- result is %d\n", result); return 0; From 4473d054ceb572557954f9536731d39b20937b0c Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Wed, 5 Nov 2014 18:41:59 +0100 Subject: [PATCH 156/371] USB: cdc-acm: only raise DTR on transitions from B0 Make sure to only raise DTR on transitions from B0 in set_termios. Also allow set_termios to be called from open with a termios_old of NULL. Note that DTR will not be raised prematurely in this case. Cc: stable Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/class/cdc-acm.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c index 6771f884cb82..9d6495424b06 100644 --- a/drivers/usb/class/cdc-acm.c +++ b/drivers/usb/class/cdc-acm.c @@ -985,11 +985,12 @@ static void acm_tty_set_termios(struct tty_struct *tty, /* FIXME: Needs to clear unsupported bits in the termios */ acm->clocal = ((termios->c_cflag & CLOCAL) != 0); - if (!newline.dwDTERate) { + if (C_BAUD(tty) == B0) { newline.dwDTERate = acm->line.dwDTERate; newctrl &= ~ACM_CTRL_DTR; - } else + } else if (termios_old && (termios_old->c_cflag & CBAUD) == B0) { newctrl |= ACM_CTRL_DTR; + } if (newctrl != acm->ctrlout) acm_set_control(acm, acm->ctrlout = newctrl); From a88098bdb272fb631a59fb152bfef7c827531294 Mon Sep 17 00:00:00 2001 From: Mark Knibbs Date: Tue, 4 Nov 2014 13:00:24 +0000 Subject: [PATCH 157/371] USB: storage: Fix timeout in usb_stor_euscsi_init() and usb_stor_huawei_e220_init() The timeout argument to usb_stor_control_msg() is specified in jiffies, not milliseconds. Signed-off-by: Mark Knibbs Signed-off-by: Greg Kroah-Hartman --- drivers/usb/storage/initializers.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/usb/storage/initializers.c b/drivers/usb/storage/initializers.c index 5a8b5ff1e45b..73f125e0cb58 100644 --- a/drivers/usb/storage/initializers.c +++ b/drivers/usb/storage/initializers.c @@ -52,7 +52,7 @@ int usb_stor_euscsi_init(struct us_data *us) us->iobuf[0] = 0x1; result = usb_stor_control_msg(us, us->send_ctrl_pipe, 0x0C, USB_RECIP_INTERFACE | USB_TYPE_VENDOR, - 0x01, 0x0, us->iobuf, 0x1, 5000); + 0x01, 0x0, us->iobuf, 0x1, 5 * HZ); usb_stor_dbg(us, "-- result is %d\n", result); return 0; @@ -100,7 +100,7 @@ int usb_stor_huawei_e220_init(struct us_data *us) result = usb_stor_control_msg(us, us->send_ctrl_pipe, USB_REQ_SET_FEATURE, USB_TYPE_STANDARD | USB_RECIP_DEVICE, - 0x01, 0x0, NULL, 0x0, 1000); + 0x01, 0x0, NULL, 0x0, 1 * HZ); usb_stor_dbg(us, "Huawei mode set result is %d\n", result); return 0; } From 7179621023011f23f636b3e9fcc97c41aa9d6823 Mon Sep 17 00:00:00 2001 From: Abhilash Kesavan Date: Fri, 31 Oct 2014 18:09:33 +0530 Subject: [PATCH 158/371] cpufreq: cpufreq-dt: Fix arguments in clock failure error message Fix the swapped arguments in the clock failure dev_err. Signed-off-by: Abhilash Kesavan Signed-off-by: Rafael J. Wysocki --- drivers/cpufreq/cpufreq-dt.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/cpufreq/cpufreq-dt.c b/drivers/cpufreq/cpufreq-dt.c index 23aaf40cf37f..f657c571b18e 100644 --- a/drivers/cpufreq/cpufreq-dt.c +++ b/drivers/cpufreq/cpufreq-dt.c @@ -166,8 +166,8 @@ try_again: if (ret == -EPROBE_DEFER) dev_dbg(cpu_dev, "cpu%d clock not ready, retry\n", cpu); else - dev_err(cpu_dev, "failed to get cpu%d clock: %d\n", ret, - cpu); + dev_err(cpu_dev, "failed to get cpu%d clock: %d\n", cpu, + ret); } else { *cdev = cpu_dev; *creg = cpu_reg; From 45cac46e51da75628ac2a593c70f5144abb9b31d Mon Sep 17 00:00:00 2001 From: Jesse Gross Date: Mon, 3 Nov 2014 19:38:37 -0800 Subject: [PATCH 159/371] geneve: Set GSO type on transmit. Geneve does not currently set the inner protocol type when transmitting packets. This causes GSO segmentation to fail on NICs that do not support Geneve offloading. CC: Andy Zhou Signed-off-by: Jesse Gross Signed-off-by: David S. Miller --- net/ipv4/geneve.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/net/ipv4/geneve.c b/net/ipv4/geneve.c index 065cd94c640c..6e5266cf403d 100644 --- a/net/ipv4/geneve.c +++ b/net/ipv4/geneve.c @@ -144,6 +144,8 @@ int geneve_xmit_skb(struct geneve_sock *gs, struct rtable *rt, gnvh = (struct genevehdr *)__skb_push(skb, sizeof(*gnvh) + opt_len); geneve_build_header(gnvh, tun_flags, vni, opt_len, opt); + skb_set_inner_protocol(skb, htons(ETH_P_TEB)); + return udp_tunnel_xmit_skb(gs->sock, rt, skb, src, dst, tos, ttl, df, src_port, dst_port, xnet); } From d3ca9eafc0ed97b8f56fdf23655cfece89c48354 Mon Sep 17 00:00:00 2001 From: Jesse Gross Date: Mon, 3 Nov 2014 19:38:38 -0800 Subject: [PATCH 160/371] geneve: Unregister pernet subsys on module unload. The pernet ops aren't ever unregistered, which causes a memory leak and an OOPs if the module is ever reinserted. Fixes: 0b5e8b8eeae4 ("net: Add Geneve tunneling protocol driver") CC: Andy Zhou Signed-off-by: Jesse Gross Acked-by: Nicolas Dichtel Signed-off-by: David S. Miller --- net/ipv4/geneve.c | 1 + 1 file changed, 1 insertion(+) diff --git a/net/ipv4/geneve.c b/net/ipv4/geneve.c index 6e5266cf403d..dedb21e99914 100644 --- a/net/ipv4/geneve.c +++ b/net/ipv4/geneve.c @@ -366,6 +366,7 @@ late_initcall(geneve_init_module); static void __exit geneve_cleanup_module(void) { destroy_workqueue(geneve_wq); + unregister_pernet_subsys(&geneve_net_ops); } module_exit(geneve_cleanup_module); From 32f638fc11db0526c706454d9ab4339d55ac89f3 Mon Sep 17 00:00:00 2001 From: Yinghai Lu Date: Thu, 30 Oct 2014 10:17:25 -0600 Subject: [PATCH 161/371] PCI: Don't oops on virtual buses in acpi_pci_get_bridge_handle() acpi_pci_get_bridge_handle() returns the ACPI handle for the bridge device (either a host bridge or a PCI-to-PCI bridge) leading to a PCI bus. But SR-IOV virtual functions can be on a virtual bus with no bridge leading to it. Return a NULL acpi_handle in this case instead of trying to dereference the NULL pointer to the bridge. This fixes a NULL pointer dereference oops in pci_get_hp_params() when adding SR-IOV VF devices on virtual buses. [bhelgaas: changelog, add comment in code] Fixes: 6cd33649fa83 ("PCI: Add pci_configure_device() during enumeration") Link: https://bugzilla.kernel.org/show_bug.cgi?id=87591 Reported-by: Chao Zhou Reported-by: Joerg Roedel Signed-off-by: Yinghai Lu Signed-off-by: Bjorn Helgaas --- include/linux/pci-acpi.h | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/include/linux/pci-acpi.h b/include/linux/pci-acpi.h index 64dacb7288a6..24c7728ca681 100644 --- a/include/linux/pci-acpi.h +++ b/include/linux/pci-acpi.h @@ -41,8 +41,13 @@ static inline acpi_handle acpi_pci_get_bridge_handle(struct pci_bus *pbus) if (pci_is_root_bus(pbus)) dev = pbus->bridge; - else + else { + /* If pbus is a virtual bus, there is no bridge to it */ + if (!pbus->self) + return NULL; + dev = &pbus->self->dev; + } return ACPI_HANDLE(dev); } From 219b5f29a570b94151533e701cc3a504efa86ef3 Mon Sep 17 00:00:00 2001 From: Loganaden Velvindron Date: Tue, 4 Nov 2014 03:02:49 -0800 Subject: [PATCH 162/371] net: Add missing descriptions for fwmark_reflect for ipv4 and ipv6. It was initially sent by Lorenzo Colitti, but was subsequently lost in the final diff he submitted. Signed-off-by: Loganaden Velvindron Signed-off-by: David S. Miller --- Documentation/networking/ip-sysctl.txt | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/Documentation/networking/ip-sysctl.txt b/Documentation/networking/ip-sysctl.txt index 0307e2875f21..a476b08a43e0 100644 --- a/Documentation/networking/ip-sysctl.txt +++ b/Documentation/networking/ip-sysctl.txt @@ -56,6 +56,13 @@ ip_forward_use_pmtu - BOOLEAN 0 - disabled 1 - enabled +fwmark_reflect - BOOLEAN + Controls the fwmark of kernel-generated IPv4 reply packets that are not + associated with a socket for example, TCP RSTs or ICMP echo replies). + If unset, these packets have a fwmark of zero. If set, they have the + fwmark of the packet they are replying to. + Default: 0 + route/max_size - INTEGER Maximum number of routes allowed in the kernel. Increase this when using large numbers of interfaces and/or routes. @@ -1201,6 +1208,13 @@ conf/all/forwarding - BOOLEAN proxy_ndp - BOOLEAN Do proxy ndp. +fwmark_reflect - BOOLEAN + Controls the fwmark of kernel-generated IPv6 reply packets that are not + associated with a socket for example, TCP RSTs or ICMPv6 echo replies). + If unset, these packets have a fwmark of zero. If set, they have the + fwmark of the packet they are replying to. + Default: 0 + conf/interface/*: Change special settings per interface. From 9cdb5dbf79f4e8f43e19ab7f4ec9ed74c146f0af Mon Sep 17 00:00:00 2001 From: Rasmus Villemoes Date: Wed, 5 Nov 2014 21:44:27 +0100 Subject: [PATCH 163/371] include/linux/socket.h: Fix comment File descriptors are always closed on exit :-) Signed-off-by: Rasmus Villemoes Signed-off-by: David S. Miller --- include/linux/socket.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/linux/socket.h b/include/linux/socket.h index ec538fc287a6..bb9b83640070 100644 --- a/include/linux/socket.h +++ b/include/linux/socket.h @@ -256,7 +256,7 @@ struct ucred { #define MSG_EOF MSG_FIN #define MSG_FASTOPEN 0x20000000 /* Send data in TCP SYN */ -#define MSG_CMSG_CLOEXEC 0x40000000 /* Set close_on_exit for file +#define MSG_CMSG_CLOEXEC 0x40000000 /* Set close_on_exec for file descriptor received through SCM_RIGHTS */ #if defined(CONFIG_COMPAT) From b994ca6b67ade73c2d69c00a449ad7006cd4546e Mon Sep 17 00:00:00 2001 From: Chen Gang Date: Tue, 4 Nov 2014 22:43:17 +0800 Subject: [PATCH 164/371] drivers: net: ethernet: xilinx: xilinx_emaclite: revert the original commit "1db3ddff1602edf2390b7667dcbaa0f71512e3ea" Microblaze is a fpga soft core, it can be customized easily, which may cause many various hardware version strings. So the original fix patch based on hard-coded compatible version strings is not a good idea (although it is correct for current issue). For it, there will be a new solving way soon (which based on the device tree). The original issue is related with qemu, so can only change the hardware version string in qemu for it, then keep the original driver no touch ( qemu is for virtualization which has much easier life than real world). Signed-off-by: Chen Gang Acked-by: Michal Simek Signed-off-by: David S. Miller --- drivers/net/ethernet/xilinx/xilinx_emaclite.c | 1 - 1 file changed, 1 deletion(-) diff --git a/drivers/net/ethernet/xilinx/xilinx_emaclite.c b/drivers/net/ethernet/xilinx/xilinx_emaclite.c index 298fad395d3a..28dbbdc393eb 100644 --- a/drivers/net/ethernet/xilinx/xilinx_emaclite.c +++ b/drivers/net/ethernet/xilinx/xilinx_emaclite.c @@ -1236,7 +1236,6 @@ static struct of_device_id xemaclite_of_match[] = { { .compatible = "xlnx,opb-ethernetlite-1.01.b", }, { .compatible = "xlnx,xps-ethernetlite-1.00.a", }, { .compatible = "xlnx,xps-ethernetlite-2.00.a", }, - { .compatible = "xlnx,xps-ethernetlite-2.00.b", }, { .compatible = "xlnx,xps-ethernetlite-2.01.a", }, { .compatible = "xlnx,xps-ethernetlite-3.00.a", }, { /* end of list */ }, From 16ee817e4365cdfe665ae8d6f6bc8f09befa1272 Mon Sep 17 00:00:00 2001 From: Fabrice Gasnier Date: Tue, 4 Nov 2014 17:08:05 +0100 Subject: [PATCH 165/371] stmmac: fix stmmac_tx_avail should be called with TX locked stmmac_tx_avail() may lie if used unprotected. It's using cur_tx and dirty_tx index. These index may be already in use by tx_clean when entering xmit routine. So, this should be called locked. This can cause transmit queue to be stuck, with following message: NETDEV WATCHDOG: eth0 (stmmaceth): transmit queue 0 timed out Signed-off-by: Fabrice Gasnier Acked-by: Giuseppe Cavallaro Signed-off-by: David S. Miller --- drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c index 6f77a46c7e2c..bcd8a3414722 100644 --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c @@ -1894,7 +1894,10 @@ static netdev_tx_t stmmac_xmit(struct sk_buff *skb, struct net_device *dev) unsigned int nopaged_len = skb_headlen(skb); unsigned int enh_desc = priv->plat->enh_desc; + spin_lock(&priv->tx_lock); + if (unlikely(stmmac_tx_avail(priv) < nfrags + 1)) { + spin_unlock(&priv->tx_lock); if (!netif_queue_stopped(dev)) { netif_stop_queue(dev); /* This is a hard error, log it. */ @@ -1903,8 +1906,6 @@ static netdev_tx_t stmmac_xmit(struct sk_buff *skb, struct net_device *dev) return NETDEV_TX_BUSY; } - spin_lock(&priv->tx_lock); - if (priv->tx_path_in_lpi_mode) stmmac_disable_eee_mode(priv); From 758a0ab59b9bed75d8c8fcaed3cb41f10a586793 Mon Sep 17 00:00:00 2001 From: Fabrice Gasnier Date: Tue, 4 Nov 2014 17:08:06 +0100 Subject: [PATCH 166/371] stmmac: release tx lock, in case of dma mapping error. Add missing spin_unlock when tx frames gets dropped. Signed-off-by: Fabrice Gasnier Acked-by: Giuseppe Cavallaro Signed-off-by: David S. Miller --- drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c index bcd8a3414722..ee07e7eee647 100644 --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c @@ -2026,6 +2026,7 @@ static netdev_tx_t stmmac_xmit(struct sk_buff *skb, struct net_device *dev) return NETDEV_TX_OK; dma_map_err: + spin_unlock(&priv->tx_lock); dev_err(priv->device, "Tx dma map failed\n"); dev_kfree_skb(skb); priv->dev->stats.tx_dropped++; From b9d73704aab92602fcadff26f61462a6445bd0cf Mon Sep 17 00:00:00 2001 From: Giuseppe CAVALLARO Date: Tue, 4 Nov 2014 17:08:07 +0100 Subject: [PATCH 167/371] stmmac: fix lock in stmmac_set_rx_mode When compile with CONFIG_PROVE_LOCKING the following warnings happen: [snip] HARDIRQ-ON-W at: [] _raw_spin_lock+0x3c/0x4c [] stmmac_set_rx_mode+0x18/0x3c [] dev_set_rx_mode+0x1c/0x28 [] __dev_open+0xb4/0xf8 [] __dev_change_flags+0x94/0x128 [] dev_change_flags+0x10/0x48 [] ip_auto_config+0x1d4/0x1084 [] do_one_initcall+0x108/0x15c [] kernel_init_freeable+0x1a8/0x248 [] kernel_init+0x8/0x160 [] ret_from_fork+0x14/0x2c INITIAL USE at: [] _raw_spin_lock+0x3c/0x4c [] stmmac_set_rx_mode+0x18/0x3c [] dev_set_rx_mode+0x1c/0x28 [] __dev_open+0xb4/0xf8 [] __dev_change_flags+0x94/0x128 [] dev_change_flags+0x10/0x48 [] ip_auto_config+0x1d4/0x1084 [] do_one_initcall+0x108/0x15c [] kernel_init_freeable+0x1a8/0x248 [] kernel_init+0x8/0x160 [] ret_from_fork+0x14/0x2c so the patch just removes the lock protection in the stmmac_set_rx_mode Signed-off-by: Giuseppe Cavallaro Cc: Emilio Lopez Signed-off-by: David S. Miller --- drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c index ee07e7eee647..27598738c9cd 100644 --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c @@ -2283,9 +2283,7 @@ static void stmmac_set_rx_mode(struct net_device *dev) { struct stmmac_priv *priv = netdev_priv(dev); - spin_lock(&priv->lock); priv->hw->mac->set_filter(priv->hw, dev); - spin_unlock(&priv->lock); } /** From 4741cf9cecf8af57dc612dd96b0056fa8e2f301d Mon Sep 17 00:00:00 2001 From: Giuseppe CAVALLARO Date: Tue, 4 Nov 2014 17:08:08 +0100 Subject: [PATCH 168/371] stmmac: fix concurrency in eee initialization. This patch aims to fix the concurrency in eee initialization inside the stmmac driver and related warnings when enable DEBUG_ATOMIC_SLEEP. Prior this patch, the stmmac_eee_init could be called in several places as shown below: stmmac_open stmmac_resume PHY Layer | | | stmmac_hw_setup stmmac_adjust_link | | stmmac ethtool |__________________________|______________| | stmmac_eee_init The patch removes the stmmac_eee_init call inside the stmmac_hw_setup that is unnecessary. It is sufficient to call it in the adjust_link to always guarantee that EEE is always configured at mac level too. Fixing the lock protection now it is covered another case (not considered before). The stmmac_eee_init could be called by the ethtool so critical sections must be protected inside this function too. Signed-off-by: Giuseppe Cavallaro Cc: Sebastian Andrzej Siewior Signed-off-by: David S. Miller --- drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 15 +++++++++------ 1 file changed, 9 insertions(+), 6 deletions(-) diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c index 27598738c9cd..9c79bf23d0b8 100644 --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c @@ -276,6 +276,7 @@ static void stmmac_eee_ctrl_timer(unsigned long arg) bool stmmac_eee_init(struct stmmac_priv *priv) { char *phy_bus_name = priv->plat->phy_bus_name; + unsigned long flags; bool ret = false; /* Using PCS we cannot dial with the phy registers at this stage @@ -300,6 +301,7 @@ bool stmmac_eee_init(struct stmmac_priv *priv) * changed). * In that case the driver disable own timers. */ + spin_lock_irqsave(&priv->lock, flags); if (priv->eee_active) { pr_debug("stmmac: disable EEE\n"); del_timer_sync(&priv->eee_ctrl_timer); @@ -307,9 +309,11 @@ bool stmmac_eee_init(struct stmmac_priv *priv) tx_lpi_timer); } priv->eee_active = 0; + spin_unlock_irqrestore(&priv->lock, flags); goto out; } /* Activate the EEE and start timers */ + spin_lock_irqsave(&priv->lock, flags); if (!priv->eee_active) { priv->eee_active = 1; init_timer(&priv->eee_ctrl_timer); @@ -325,9 +329,10 @@ bool stmmac_eee_init(struct stmmac_priv *priv) /* Set HW EEE according to the speed */ priv->hw->mac->set_eee_pls(priv->hw, priv->phydev->link); - pr_debug("stmmac: Energy-Efficient Ethernet initialized\n"); - ret = true; + spin_unlock_irqrestore(&priv->lock, flags); + + pr_debug("stmmac: Energy-Efficient Ethernet initialized\n"); } out: return ret; @@ -760,12 +765,12 @@ static void stmmac_adjust_link(struct net_device *dev) if (new_state && netif_msg_link(priv)) phy_print_status(phydev); + spin_unlock_irqrestore(&priv->lock, flags); + /* At this stage, it could be needed to setup the EEE or adjust some * MAC related HW registers. */ priv->eee_enabled = stmmac_eee_init(priv); - - spin_unlock_irqrestore(&priv->lock, flags); } /** @@ -1705,8 +1710,6 @@ static int stmmac_hw_setup(struct net_device *dev) } priv->tx_lpi_timer = STMMAC_DEFAULT_TWT_LS; - priv->eee_enabled = stmmac_eee_init(priv); - stmmac_init_tx_coalesce(priv); if ((priv->use_riwt) && (priv->hw->dma->rx_watchdog)) { From 777da230c5b98a6a3793f0525dd99e1e61c8a072 Mon Sep 17 00:00:00 2001 From: Giuseppe CAVALLARO Date: Tue, 4 Nov 2014 17:08:09 +0100 Subject: [PATCH 169/371] stmmac: fix atomicity in pm routines This patch is to fix the atomicity when suspend and resume the driver. The clk api have been changed (as reported by Hao Liang) and the skb allocation is done out of the hw setup function and taking care about the GFP flags. Reported-by: Hao Liang Signed-off-by: Giuseppe Cavallaro Cc: Alexey Khoroshilov Cc: Hao Liang Signed-off-by: David S. Miller --- .../net/ethernet/stmicro/stmmac/stmmac_main.c | 29 ++++++++++--------- 1 file changed, 16 insertions(+), 13 deletions(-) diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c index 9c79bf23d0b8..18c46bb0f3bf 100644 --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c @@ -964,12 +964,12 @@ static void stmmac_clear_descriptors(struct stmmac_priv *priv) } static int stmmac_init_rx_buffers(struct stmmac_priv *priv, struct dma_desc *p, - int i) + int i, gfp_t flags) { struct sk_buff *skb; skb = __netdev_alloc_skb(priv->dev, priv->dma_buf_sz + NET_IP_ALIGN, - GFP_KERNEL); + flags); if (!skb) { pr_err("%s: Rx init fails; skb is NULL\n", __func__); return -ENOMEM; @@ -1011,7 +1011,7 @@ static void stmmac_free_rx_buffers(struct stmmac_priv *priv, int i) * and allocates the socket buffers. It suppors the chained and ring * modes. */ -static int init_dma_desc_rings(struct net_device *dev) +static int init_dma_desc_rings(struct net_device *dev, gfp_t flags) { int i; struct stmmac_priv *priv = netdev_priv(dev); @@ -1046,7 +1046,7 @@ static int init_dma_desc_rings(struct net_device *dev) else p = priv->dma_rx + i; - ret = stmmac_init_rx_buffers(priv, p, i); + ret = stmmac_init_rx_buffers(priv, p, i, flags); if (ret) goto err_init_rx_buffers; @@ -1652,11 +1652,6 @@ static int stmmac_hw_setup(struct net_device *dev) struct stmmac_priv *priv = netdev_priv(dev); int ret; - ret = init_dma_desc_rings(dev); - if (ret < 0) { - pr_err("%s: DMA descriptors initialization failed\n", __func__); - return ret; - } /* DMA initialization and SW reset */ ret = stmmac_init_dma_engine(priv); if (ret < 0) { @@ -1710,8 +1705,6 @@ static int stmmac_hw_setup(struct net_device *dev) } priv->tx_lpi_timer = STMMAC_DEFAULT_TWT_LS; - stmmac_init_tx_coalesce(priv); - if ((priv->use_riwt) && (priv->hw->dma->rx_watchdog)) { priv->rx_riwt = MAX_DMA_RIWT; priv->hw->dma->rx_watchdog(priv->ioaddr, MAX_DMA_RIWT); @@ -1764,12 +1757,20 @@ static int stmmac_open(struct net_device *dev) goto dma_desc_error; } + ret = init_dma_desc_rings(dev, GFP_KERNEL); + if (ret < 0) { + pr_err("%s: DMA descriptors initialization failed\n", __func__); + goto init_error; + } + ret = stmmac_hw_setup(dev); if (ret < 0) { pr_err("%s: Hw setup failed\n", __func__); goto init_error; } + stmmac_init_tx_coalesce(priv); + if (priv->phydev) phy_start(priv->phydev); @@ -2953,7 +2954,7 @@ int stmmac_suspend(struct net_device *ndev) stmmac_set_mac(priv->ioaddr, false); pinctrl_pm_select_sleep_state(priv->device); /* Disable clock in case of PWM is off */ - clk_disable_unprepare(priv->stmmac_clk); + clk_disable(priv->stmmac_clk); } spin_unlock_irqrestore(&priv->lock, flags); @@ -2985,7 +2986,7 @@ int stmmac_resume(struct net_device *ndev) } else { pinctrl_pm_select_default_state(priv->device); /* enable the clk prevously disabled */ - clk_prepare_enable(priv->stmmac_clk); + clk_enable(priv->stmmac_clk); /* reset the phy so that it's ready */ if (priv->mii) stmmac_mdio_reset(priv->mii); @@ -2993,7 +2994,9 @@ int stmmac_resume(struct net_device *ndev) netif_device_attach(ndev); + init_dma_desc_rings(ndev, GFP_ATOMIC); stmmac_hw_setup(ndev); + stmmac_init_tx_coalesce(priv); napi_enable(&priv->napi); From 1f37bf87aa7523d28e7e4c4f7bb5dba98faa3e00 Mon Sep 17 00:00:00 2001 From: Marcelo Leitner Date: Tue, 4 Nov 2014 17:15:08 -0200 Subject: [PATCH 170/371] tcp: zero retrans_stamp if all retrans were acked Ueki Kohei reported that when we are using NewReno with connections that have a very low traffic, we may timeout the connection too early if a second loss occurs after the first one was successfully acked but no data was transfered later. Below is his description of it: When SACK is disabled, and a socket suffers multiple separate TCP retransmissions, that socket's ETIMEDOUT value is calculated from the time of the *first* retransmission instead of the *latest* retransmission. This happens because the tcp_sock's retrans_stamp is set once then never cleared. Take the following connection: Linux remote-machine | | send#1---->(*1)|--------> data#1 --------->| | | | RTO : : | | | ---(*2)|----> data#1(retrans) ---->| | (*3)|<---------- ACK <----------| | | | | : : | : : | : : 16 minutes (or more) : | : : | : : | : : | | | send#2---->(*4)|--------> data#2 --------->| | | | RTO : : | | | ---(*5)|----> data#2(retrans) ---->| | | | | | | RTO*2 : : | | | | | | ETIMEDOUT<----(*6)| | (*1) One data packet sent. (*2) Because no ACK packet is received, the packet is retransmitted. (*3) The ACK packet is received. The transmitted packet is acknowledged. At this point the first "retransmission event" has passed and been recovered from. Any future retransmission is a completely new "event". (*4) After 16 minutes (to correspond with retries2=15), a new data packet is sent. Note: No data is transmitted between (*3) and (*4). The socket's timeout SHOULD be calculated from this point in time, but instead it's calculated from the prior "event" 16 minutes ago. (*5) Because no ACK packet is received, the packet is retransmitted. (*6) At the time of the 2nd retransmission, the socket returns ETIMEDOUT. Therefore, now we clear retrans_stamp as soon as all data during the loss window is fully acked. Reported-by: Ueki Kohei Cc: Neal Cardwell Cc: Yuchung Cheng Signed-off-by: Marcelo Ricardo Leitner Acked-by: Neal Cardwell Tested-by: Neal Cardwell Signed-off-by: David S. Miller --- net/ipv4/tcp_input.c | 60 +++++++++++++++++++++++--------------------- 1 file changed, 31 insertions(+), 29 deletions(-) diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c index a12b455928e5..88fa2d160685 100644 --- a/net/ipv4/tcp_input.c +++ b/net/ipv4/tcp_input.c @@ -2315,6 +2315,35 @@ static inline bool tcp_packet_delayed(const struct tcp_sock *tp) /* Undo procedures. */ +/* We can clear retrans_stamp when there are no retransmissions in the + * window. It would seem that it is trivially available for us in + * tp->retrans_out, however, that kind of assumptions doesn't consider + * what will happen if errors occur when sending retransmission for the + * second time. ...It could the that such segment has only + * TCPCB_EVER_RETRANS set at the present time. It seems that checking + * the head skb is enough except for some reneging corner cases that + * are not worth the effort. + * + * Main reason for all this complexity is the fact that connection dying + * time now depends on the validity of the retrans_stamp, in particular, + * that successive retransmissions of a segment must not advance + * retrans_stamp under any conditions. + */ +static bool tcp_any_retrans_done(const struct sock *sk) +{ + const struct tcp_sock *tp = tcp_sk(sk); + struct sk_buff *skb; + + if (tp->retrans_out) + return true; + + skb = tcp_write_queue_head(sk); + if (unlikely(skb && TCP_SKB_CB(skb)->sacked & TCPCB_EVER_RETRANS)) + return true; + + return false; +} + #if FASTRETRANS_DEBUG > 1 static void DBGUNDO(struct sock *sk, const char *msg) { @@ -2410,6 +2439,8 @@ static bool tcp_try_undo_recovery(struct sock *sk) * is ACKed. For Reno it is MUST to prevent false * fast retransmits (RFC2582). SACK TCP is safe. */ tcp_moderate_cwnd(tp); + if (!tcp_any_retrans_done(sk)) + tp->retrans_stamp = 0; return true; } tcp_set_ca_state(sk, TCP_CA_Open); @@ -2430,35 +2461,6 @@ static bool tcp_try_undo_dsack(struct sock *sk) return false; } -/* We can clear retrans_stamp when there are no retransmissions in the - * window. It would seem that it is trivially available for us in - * tp->retrans_out, however, that kind of assumptions doesn't consider - * what will happen if errors occur when sending retransmission for the - * second time. ...It could the that such segment has only - * TCPCB_EVER_RETRANS set at the present time. It seems that checking - * the head skb is enough except for some reneging corner cases that - * are not worth the effort. - * - * Main reason for all this complexity is the fact that connection dying - * time now depends on the validity of the retrans_stamp, in particular, - * that successive retransmissions of a segment must not advance - * retrans_stamp under any conditions. - */ -static bool tcp_any_retrans_done(const struct sock *sk) -{ - const struct tcp_sock *tp = tcp_sk(sk); - struct sk_buff *skb; - - if (tp->retrans_out) - return true; - - skb = tcp_write_queue_head(sk); - if (unlikely(skb && TCP_SKB_CB(skb)->sacked & TCPCB_EVER_RETRANS)) - return true; - - return false; -} - /* Undo during loss recovery after partial ACK or using F-RTO. */ static bool tcp_try_undo_loss(struct sock *sk, bool frto_undo) { From 66f1c44887ba4f47d617f8ae21cf8e04e1892bd7 Mon Sep 17 00:00:00 2001 From: Gregory Fong Date: Tue, 4 Nov 2014 11:21:21 -0800 Subject: [PATCH 171/371] bridge: include in6.h in if_bridge.h for struct in6_addr if_bridge.h uses struct in6_addr ip6, but wasn't including the in6.h header. Thomas Backlund originally sent a patch to do this, but this revealed a redefinition issue: https://lkml.org/lkml/2013/1/13/116 The redefinition issue should have been fixed by the following Linux commits: ee262ad827f89e2dc7851ec2986953b5b125c6bc inet: defines IPPROTO_* needed for module alias generation cfd280c91253cc28e4919e349fa7a813b63e71e8 net: sync some IP headers with glibc and the following glibc commit: 6c82a2f8d7c8e21e39237225c819f182ae438db3 Coordinate IPv6 definitions for Linux and glibc so actually include the header now. Reported-by: Colin Guthrie Reported-by: Christiaan Welvaart Reported-by: Thomas Backlund Cc: Florian Fainelli Cc: Cong Wang Cc: David Miller Signed-off-by: Gregory Fong Acked-by: Cong Wang Signed-off-by: David S. Miller --- include/uapi/linux/if_bridge.h | 1 + 1 file changed, 1 insertion(+) diff --git a/include/uapi/linux/if_bridge.h b/include/uapi/linux/if_bridge.h index 39f621a9fe82..da17e456908d 100644 --- a/include/uapi/linux/if_bridge.h +++ b/include/uapi/linux/if_bridge.h @@ -15,6 +15,7 @@ #include #include +#include #define SYSFS_BRIDGE_ATTR "bridge" #define SYSFS_BRIDGE_FDB "brforward" From f20531a9aae0c7378d9fa75b4b5d99b7eecab066 Mon Sep 17 00:00:00 2001 From: Oussama Ghorbel Date: Tue, 4 Nov 2014 11:47:06 +0530 Subject: [PATCH 172/371] phy: omap-usb2: Enable runtime PM of omap-usb2 phy properly The USB OTG port does not work since v3.16 on omap platform. This is a regression introduced by the commit eb82a3d846fa (phy: omap-usb2: Balance pm_runtime_enable() on probe failure and remove). This because the call to pm_runtime_enable() function is moved after the call to devm_phy_create() function, which has side effect since later in the subsequent calls of devm_phy_create() there is a check with pm_runtime_enabled() to configure few things. Fixes: eb82a3d846fa Signed-off-by: Oussama Ghorbel Tested-by: Rabin Vincent Signed-off-by: Kishon Vijay Abraham I Cc: stable Signed-off-by: Greg Kroah-Hartman --- drivers/phy/phy-omap-usb2.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/phy/phy-omap-usb2.c b/drivers/phy/phy-omap-usb2.c index 8c842980834a..f091576b6449 100644 --- a/drivers/phy/phy-omap-usb2.c +++ b/drivers/phy/phy-omap-usb2.c @@ -258,14 +258,16 @@ static int omap_usb2_probe(struct platform_device *pdev) otg->phy = &phy->phy; platform_set_drvdata(pdev, phy); + pm_runtime_enable(phy->dev); generic_phy = devm_phy_create(phy->dev, NULL, &ops, NULL); - if (IS_ERR(generic_phy)) + if (IS_ERR(generic_phy)) { + pm_runtime_disable(phy->dev); return PTR_ERR(generic_phy); + } phy_set_drvdata(generic_phy, phy); - pm_runtime_enable(phy->dev); phy_provider = devm_of_phy_provider_register(phy->dev, of_phy_simple_xlate); if (IS_ERR(phy_provider)) { From f3f9185f3e49c748e952dd579357048a42e89398 Mon Sep 17 00:00:00 2001 From: Kailang Yang Date: Fri, 24 Oct 2014 15:43:46 +0800 Subject: [PATCH 173/371] ALSA: hda/realtek - Restore default value for ALC668 Restore the registers to prevent the abnormal digital power supply rising ratio/sequence to the codec and causing the incorrect default codec register restoration during initialization. Signed-off-by: Kailang Yang Signed-off-by: Takashi Iwai --- sound/pci/hda/patch_realtek.c | 40 +++++++++++++++++++++++++++++++++-- 1 file changed, 38 insertions(+), 2 deletions(-) diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c index 1af917f58a70..da03693099eb 100644 --- a/sound/pci/hda/patch_realtek.c +++ b/sound/pci/hda/patch_realtek.c @@ -5669,6 +5669,35 @@ static void alc662_fixup_led_gpio1(struct hda_codec *codec, } } +static struct coef_fw alc668_coefs[] = { + WRITE_COEF(0x01, 0xbebe), WRITE_COEF(0x02, 0xaaaa), WRITE_COEF(0x03, 0x0), + WRITE_COEF(0x04, 0x0180), WRITE_COEF(0x06, 0x0), WRITE_COEF(0x07, 0x0f80), + WRITE_COEF(0x08, 0x0031), WRITE_COEF(0x0a, 0x0060), WRITE_COEF(0x0b, 0x0), + WRITE_COEF(0x0c, 0x7cf7), WRITE_COEF(0x0d, 0x1080), WRITE_COEF(0x0e, 0x7f7f), + WRITE_COEF(0x0f, 0xcccc), WRITE_COEF(0x10, 0xddcc), WRITE_COEF(0x11, 0x0001), + WRITE_COEF(0x13, 0x0), WRITE_COEF(0x14, 0x2aa0), WRITE_COEF(0x17, 0xa940), + WRITE_COEF(0x19, 0x0), WRITE_COEF(0x1a, 0x0), WRITE_COEF(0x1b, 0x0), + WRITE_COEF(0x1c, 0x0), WRITE_COEF(0x1d, 0x0), WRITE_COEF(0x1e, 0x7418), + WRITE_COEF(0x1f, 0x0804), WRITE_COEF(0x20, 0x4200), WRITE_COEF(0x21, 0x0468), + WRITE_COEF(0x22, 0x8ccc), WRITE_COEF(0x23, 0x0250), WRITE_COEF(0x24, 0x7418), + WRITE_COEF(0x27, 0x0), WRITE_COEF(0x28, 0x8ccc), WRITE_COEF(0x2a, 0xff00), + WRITE_COEF(0x2b, 0x8000), WRITE_COEF(0xa7, 0xff00), WRITE_COEF(0xa8, 0x8000), + WRITE_COEF(0xaa, 0x2e17), WRITE_COEF(0xab, 0xa0c0), WRITE_COEF(0xac, 0x0), + WRITE_COEF(0xad, 0x0), WRITE_COEF(0xae, 0x2ac6), WRITE_COEF(0xaf, 0xa480), + WRITE_COEF(0xb0, 0x0), WRITE_COEF(0xb1, 0x0), WRITE_COEF(0xb2, 0x0), + WRITE_COEF(0xb3, 0x0), WRITE_COEF(0xb4, 0x0), WRITE_COEF(0xb5, 0x1040), + WRITE_COEF(0xb6, 0xd697), WRITE_COEF(0xb7, 0x902b), WRITE_COEF(0xb8, 0xd697), + WRITE_COEF(0xb9, 0x902b), WRITE_COEF(0xba, 0xb8ba), WRITE_COEF(0xbb, 0xaaab), + WRITE_COEF(0xbc, 0xaaaf), WRITE_COEF(0xbd, 0x6aaa), WRITE_COEF(0xbe, 0x1c02), + WRITE_COEF(0xc0, 0x00ff), WRITE_COEF(0xc1, 0x0fa6), + {} +}; + +static void alc668_restore_default_value(struct hda_codec *codec) +{ + alc_process_coef_fw(codec, alc668_coefs); +} + enum { ALC662_FIXUP_ASPIRE, ALC662_FIXUP_LED_GPIO1, @@ -6136,8 +6165,15 @@ static int patch_alc662(struct hda_codec *codec) alc_fix_pll_init(codec, 0x20, 0x04, 15); - spec->init_hook = alc662_fill_coef; - alc662_fill_coef(codec); + switch (codec->vendor_id) { + case 0x10ec0668: + spec->init_hook = alc668_restore_default_value; + break; + default: + spec->init_hook = alc662_fill_coef; + alc662_fill_coef(codec); + break; + } snd_hda_pick_fixup(codec, alc662_fixup_models, alc662_fixup_tbl, alc662_fixups); From 547039ec502076e60034eeb79611df3433a99b7d Mon Sep 17 00:00:00 2001 From: Peter Hurley Date: Thu, 16 Oct 2014 13:46:38 -0400 Subject: [PATCH 174/371] serial: Fix divide-by-zero fault in uart_get_divisor() MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit uart_get_baud_rate() will return baud == 0 if the max rate is set to the "magic" 38400 rate and the SPD_* flags are also specified. On the first iteration, if the current baud rate is higher than the max, the baud rate is clamped at the max (which in the degenerate case is 38400). On the second iteration, the now-"magic" 38400 baud rate selects the possibly higher alternate baud rate indicated by the SPD_* flag. Since only two loop iterations are performed, the loop is exited, a kernel WARNING is generated and a baud rate of 0 is returned. Reproducible with: setserial /dev/ttyS0 spd_hi base_baud 38400 Only perform the "magic" 38400 -> SPD_* baud transform on the first loop iteration, which prevents the degenerate case from recognizing the clamped baud rate as the "magic" 38400 value. Reported-by: Robert Święcki Cc: # all Signed-off-by: Peter Hurley Signed-off-by: Greg Kroah-Hartman --- drivers/tty/serial/serial_core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/tty/serial/serial_core.c b/drivers/tty/serial/serial_core.c index df3a8c74358e..eaeb9a02c7fe 100644 --- a/drivers/tty/serial/serial_core.c +++ b/drivers/tty/serial/serial_core.c @@ -363,7 +363,7 @@ uart_get_baud_rate(struct uart_port *port, struct ktermios *termios, * The spd_hi, spd_vhi, spd_shi, spd_warp kludge... * Die! Die! Die! */ - if (baud == 38400) + if (try == 0 && baud == 38400) baud = altbaud; /* From 37b164578826406a173ca7c20d9ba7430134d23e Mon Sep 17 00:00:00 2001 From: Peter Hurley Date: Thu, 16 Oct 2014 13:51:30 -0400 Subject: [PATCH 175/371] tty: Fix high cpu load if tty is unreleaseable Kernel oops can cause the tty to be unreleaseable (for example, if n_tty_read() crashes while on the read_wait queue). This will cause tty_release() to endlessly loop without sleeping. Use a killable sleep timeout which grows by 2n+1 jiffies over the interval [0, 120 secs.) and then jumps to forever (but still killable). NB: killable just allows for the task to be rewoken manually, not to be terminated. Cc: # since before 2.6.32 Signed-off-by: Peter Hurley Signed-off-by: Greg Kroah-Hartman --- drivers/tty/tty_io.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/drivers/tty/tty_io.c b/drivers/tty/tty_io.c index 16a2c0237dd6..4021c10d9908 100644 --- a/drivers/tty/tty_io.c +++ b/drivers/tty/tty_io.c @@ -1709,6 +1709,7 @@ int tty_release(struct inode *inode, struct file *filp) int pty_master, tty_closing, o_tty_closing, do_sleep; int idx; char buf[64]; + long timeout = 0; if (tty_paranoia_check(tty, inode, __func__)) return 0; @@ -1793,7 +1794,11 @@ int tty_release(struct inode *inode, struct file *filp) __func__, tty_name(tty, buf)); tty_unlock_pair(tty, o_tty); mutex_unlock(&tty_mutex); - schedule(); + schedule_timeout_killable(timeout); + if (timeout < 120 * HZ) + timeout = 2 * timeout + 1; + else + timeout = MAX_SCHEDULE_TIMEOUT; } /* From 494c1eac7e73f719af9d474a96ec8494c33efd6a Mon Sep 17 00:00:00 2001 From: Peter Hurley Date: Thu, 16 Oct 2014 13:54:36 -0400 Subject: [PATCH 176/371] tty: Prevent "read/write wait queue active!" log flooding Only print one warning when a task is on the read_wait or write_wait wait queue at final tty release. Cc: # 3.4.x+ Signed-off-by: Peter Hurley Signed-off-by: Greg Kroah-Hartman --- drivers/tty/tty_io.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/drivers/tty/tty_io.c b/drivers/tty/tty_io.c index 4021c10d9908..0508a1d8e4cd 100644 --- a/drivers/tty/tty_io.c +++ b/drivers/tty/tty_io.c @@ -1710,6 +1710,7 @@ int tty_release(struct inode *inode, struct file *filp) int idx; char buf[64]; long timeout = 0; + int once = 1; if (tty_paranoia_check(tty, inode, __func__)) return 0; @@ -1790,8 +1791,11 @@ int tty_release(struct inode *inode, struct file *filp) if (!do_sleep) break; - printk(KERN_WARNING "%s: %s: read/write wait queue active!\n", - __func__, tty_name(tty, buf)); + if (once) { + once = 0; + printk(KERN_WARNING "%s: %s: read/write wait queue active!\n", + __func__, tty_name(tty, buf)); + } tty_unlock_pair(tty, o_tty); mutex_unlock(&tty_mutex); schedule_timeout_killable(timeout); From 5305e4d674ed5ec9bebd11d948affd411594d4cf Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Fri, 24 Oct 2014 18:14:01 +0200 Subject: [PATCH 177/371] dma: edma: move device registration to platform code The horrible split between the low-level part of the edma support and the dmaengine front-end driver causes problems on multiplatform kernels. This is an attempt to improve the situation slightly by only registering the dmaengine devices that are actually present. Signed-off-by: Arnd Bergmann [olof: add missing include of linux/dma-mapping.h] Signed-off-by: Olof Johansson Signed-off-by: Olof Johansson --- arch/arm/common/edma.c | 9 +++++++++ drivers/dma/edma.c | 40 +--------------------------------------- 2 files changed, 10 insertions(+), 39 deletions(-) diff --git a/arch/arm/common/edma.c b/arch/arm/common/edma.c index d86771abbf57..72041f002b7e 100644 --- a/arch/arm/common/edma.c +++ b/arch/arm/common/edma.c @@ -26,6 +26,7 @@ #include #include #include +#include #include #include #include @@ -1623,6 +1624,11 @@ static int edma_probe(struct platform_device *pdev) struct device_node *node = pdev->dev.of_node; struct device *dev = &pdev->dev; int ret; + struct platform_device_info edma_dev_info = { + .name = "edma-dma-engine", + .dma_mask = DMA_BIT_MASK(32), + .parent = &pdev->dev, + }; if (node) { /* Check if this is a second instance registered */ @@ -1793,6 +1799,9 @@ static int edma_probe(struct platform_device *pdev) edma_write_array(j, EDMA_QRAE, i, 0x0); } arch_num_cc++; + + edma_dev_info.id = j; + platform_device_register_full(&edma_dev_info); } return 0; diff --git a/drivers/dma/edma.c b/drivers/dma/edma.c index 123f578d6dd3..4cfaaa5a49be 100644 --- a/drivers/dma/edma.c +++ b/drivers/dma/edma.c @@ -1107,52 +1107,14 @@ bool edma_filter_fn(struct dma_chan *chan, void *param) } EXPORT_SYMBOL(edma_filter_fn); -static struct platform_device *pdev0, *pdev1; - -static const struct platform_device_info edma_dev_info0 = { - .name = "edma-dma-engine", - .id = 0, - .dma_mask = DMA_BIT_MASK(32), -}; - -static const struct platform_device_info edma_dev_info1 = { - .name = "edma-dma-engine", - .id = 1, - .dma_mask = DMA_BIT_MASK(32), -}; - static int edma_init(void) { - int ret = platform_driver_register(&edma_driver); - - if (ret == 0) { - pdev0 = platform_device_register_full(&edma_dev_info0); - if (IS_ERR(pdev0)) { - platform_driver_unregister(&edma_driver); - ret = PTR_ERR(pdev0); - goto out; - } - } - - if (!of_have_populated_dt() && EDMA_CTLRS == 2) { - pdev1 = platform_device_register_full(&edma_dev_info1); - if (IS_ERR(pdev1)) { - platform_driver_unregister(&edma_driver); - platform_device_unregister(pdev0); - ret = PTR_ERR(pdev1); - } - } - -out: - return ret; + return platform_driver_register(&edma_driver); } subsys_initcall(edma_init); static void __exit edma_exit(void) { - platform_device_unregister(pdev0); - if (pdev1) - platform_device_unregister(pdev1); platform_driver_unregister(&edma_driver); } module_exit(edma_exit); From cd92208f6996f7d190a15eb278e7d02499e2d264 Mon Sep 17 00:00:00 2001 From: Matthias Brugger Date: Thu, 9 Oct 2014 18:23:31 +0200 Subject: [PATCH 178/371] tty: serial: 8250_mtk: Fix quot calculation The calculation of value quot for highspeed register set to three was wrong. This patch fixes the calculation so that the serial port for baudrates bigger then 576000 baud is working correctly. Signed-off-by: Matthias Brugger Signed-off-by: Greg Kroah-Hartman --- drivers/tty/serial/8250/8250_mtk.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/tty/serial/8250/8250_mtk.c b/drivers/tty/serial/8250/8250_mtk.c index 8f37d57165ec..de7aae523b37 100644 --- a/drivers/tty/serial/8250/8250_mtk.c +++ b/drivers/tty/serial/8250/8250_mtk.c @@ -81,7 +81,7 @@ mtk8250_set_termios(struct uart_port *port, struct ktermios *termios, /* Set to highest baudrate supported */ if (baud >= 1152000) baud = 921600; - quot = DIV_ROUND_CLOSEST(port->uartclk, 256 * baud); + quot = (port->uartclk / (256 * baud)) + 1; } /* From 9e326f78713a4421fe11afc2ddeac07698fac131 Mon Sep 17 00:00:00 2001 From: Imre Deak Date: Thu, 2 Oct 2014 16:34:31 +0300 Subject: [PATCH 179/371] tty/vt: don't set font mappings on vc not supporting this We can call this function for a dummy console that doesn't support setting the font mapping, which will result in a null ptr BUG. So check for this case and return error for consoles w/o font mapping support. Reference: https://bugzilla.kernel.org/show_bug.cgi?id=59321 Signed-off-by: Imre Deak Cc: stable Signed-off-by: Greg Kroah-Hartman --- drivers/tty/vt/consolemap.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/tty/vt/consolemap.c b/drivers/tty/vt/consolemap.c index 610b720d3b91..59b25e039968 100644 --- a/drivers/tty/vt/consolemap.c +++ b/drivers/tty/vt/consolemap.c @@ -539,6 +539,12 @@ int con_set_unimap(struct vc_data *vc, ushort ct, struct unipair __user *list) /* Save original vc_unipagdir_loc in case we allocate a new one */ p = *vc->vc_uni_pagedir_loc; + + if (!p) { + err = -EINVAL; + + goto out_unlock; + } if (p->refcount > 1) { int j, k; @@ -623,6 +629,7 @@ int con_set_unimap(struct vc_data *vc, ushort ct, struct unipair __user *list) set_inverse_transl(vc, p, i); /* Update inverse translations */ set_inverse_trans_unicode(vc, p); +out_unlock: console_unlock(); return err; } From 7e12e675c17982a8b3cc91314a68f4c4d1bceb92 Mon Sep 17 00:00:00 2001 From: Jingchang Lu Date: Tue, 21 Oct 2014 16:50:21 +0800 Subject: [PATCH 180/371] serial: of-serial: fix uninitialized kmalloc variable The info pointer points to an uninitialized kmalloced space. If a device doesn't have clk property, then info->clk may have unpredicated value and cause call trace. So use kzalloc to make sure it is NULL initialized. Signed-off-by: Jingchang Lu Acked-by: Arnd Bergmann --- drivers/tty/serial/of_serial.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/tty/serial/of_serial.c b/drivers/tty/serial/of_serial.c index 8bc2563335ae..56982da4a9e9 100644 --- a/drivers/tty/serial/of_serial.c +++ b/drivers/tty/serial/of_serial.c @@ -158,7 +158,7 @@ static int of_platform_serial_probe(struct platform_device *ofdev) if (of_find_property(ofdev->dev.of_node, "used-by-rtas", NULL)) return -EBUSY; - info = kmalloc(sizeof(*info), GFP_KERNEL); + info = kzalloc(sizeof(*info), GFP_KERNEL); if (info == NULL) return -ENOMEM; From 2b9375b91bef65b837bed61a05fb387159b38ddf Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Thu, 6 Nov 2014 14:08:29 +0300 Subject: [PATCH 181/371] spi: pxa2xx: toggle clocks on suspend if not disabled by runtime PM If PM_RUNTIME is enabled, it is easy to trigger the following backtrace on pxa2xx hosts: ------------[ cut here ]------------ WARNING: CPU: 0 PID: 1 at /home/lumag/linux/arch/arm/mach-pxa/clock.c:35 clk_disable+0xa0/0xa8() Modules linked in: CPU: 0 PID: 1 Comm: swapper Not tainted 3.17.0-00007-g1b3d2ee-dirty #104 [] (unwind_backtrace) from [] (show_stack+0x10/0x14) [] (show_stack) from [] (warn_slowpath_common+0x6c/0x8c) [] (warn_slowpath_common) from [] (warn_slowpath_null+0x1c/0x24) [] (warn_slowpath_null) from [] (clk_disable+0xa0/0xa8) [] (clk_disable) from [] (pxa2xx_spi_suspend+0x2c/0x34) [] (pxa2xx_spi_suspend) from [] (platform_pm_suspend+0x2c/0x54) [] (platform_pm_suspend) from [] (dpm_run_callback.isra.14+0x2c/0x74) [] (dpm_run_callback.isra.14) from [] (__device_suspend+0x120/0x2f8) [] (__device_suspend) from [] (dpm_suspend+0x50/0x208) [] (dpm_suspend) from [] (suspend_devices_and_enter+0x8c/0x3a0) [] (suspend_devices_and_enter) from [] (pm_suspend+0x214/0x2a8) [] (pm_suspend) from [] (test_suspend+0x14c/0x1dc) [] (test_suspend) from [] (do_one_initcall+0x8c/0x1fc) [] (do_one_initcall) from [] (kernel_init_freeable+0xf4/0x1b4) [] (kernel_init_freeable) from [] (kernel_init+0x8/0xec) [] (kernel_init) from [] (ret_from_fork+0x14/0x24) ---[ end trace 46524156d8faa4f6 ]--- This happens because suspend function tries to disable a clock that is already disabled by runtime_suspend callback. Add if (!pm_runtime_suspended()) checks to suspend/resume path. Fixes: 7d94a505858 (spi/pxa2xx: add support for runtime PM) Signed-off-by: Dmitry Eremin-Solenikov Reported-by: Andrea Adami Signed-off-by: Mark Brown Cc: stable@vger.kernel.org --- drivers/spi/spi-pxa2xx.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/drivers/spi/spi-pxa2xx.c b/drivers/spi/spi-pxa2xx.c index d8a105f76837..9e9e0f971e6c 100644 --- a/drivers/spi/spi-pxa2xx.c +++ b/drivers/spi/spi-pxa2xx.c @@ -1274,7 +1274,9 @@ static int pxa2xx_spi_suspend(struct device *dev) if (status != 0) return status; write_SSCR0(0, drv_data->ioaddr); - clk_disable_unprepare(ssp->clk); + + if (!pm_runtime_suspended(dev)) + clk_disable_unprepare(ssp->clk); return 0; } @@ -1288,7 +1290,8 @@ static int pxa2xx_spi_resume(struct device *dev) pxa2xx_spi_dma_resume(drv_data); /* Enable the SSP clock */ - clk_prepare_enable(ssp->clk); + if (!pm_runtime_suspended(dev)) + clk_prepare_enable(ssp->clk); /* Restore LPSS private register bits */ lpss_ssp_setup(drv_data); From 491a48aa52f03b4654edbf8f97c1aa7d2f24f62e Mon Sep 17 00:00:00 2001 From: Isamu Mogi Date: Thu, 30 Oct 2014 22:07:36 +0900 Subject: [PATCH 182/371] MIPS: R3000: Fix debug output for Virtual page number Virtual page number of R3000 in entryhi is 20 bit from MSB. But in dump_tlb(), the bit mask to read it from entryhi is 19 bit (0xffffe000). The patch fixes that to 0xfffff000. Signed-off-by: Isamu Mogi Cc: linux-mips@linux-mips.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/8290/ Signed-off-by: Ralf Baechle --- arch/mips/lib/r3k_dump_tlb.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/mips/lib/r3k_dump_tlb.c b/arch/mips/lib/r3k_dump_tlb.c index 91615c2ef0cf..1ef365ab3cd3 100644 --- a/arch/mips/lib/r3k_dump_tlb.c +++ b/arch/mips/lib/r3k_dump_tlb.c @@ -34,7 +34,7 @@ static void dump_tlb(int first, int last) entrylo0 = read_c0_entrylo0(); /* Unused entries have a virtual address of KSEG0. */ - if ((entryhi & 0xffffe000) != 0x80000000 + if ((entryhi & 0xfffff000) != 0x80000000 && (entryhi & 0xfc0) == asid) { /* * Only print entries in use @@ -43,7 +43,7 @@ static void dump_tlb(int first, int last) printk("va=%08lx asid=%08lx" " [pa=%06lx n=%d d=%d v=%d g=%d]", - (entryhi & 0xffffe000), + (entryhi & 0xfffff000), entryhi & 0xfc0, entrylo0 & PAGE_MASK, (entrylo0 & (1 << 11)) ? 1 : 0, From 738459e3f88538f2ece263424dafe5d91799e46b Mon Sep 17 00:00:00 2001 From: Cristian Stoica Date: Thu, 30 Oct 2014 14:40:22 +0200 Subject: [PATCH 183/371] crypto: caam - fix missing dma unmap on error path If dma mapping for dma_addr_out fails, the descriptor memory is freed but the previous dma mapping for dma_addr_in remains. This patch resolves the missing dma unmap and groups resource allocations at function start. Cc: # 3.13+ Signed-off-by: Cristian Stoica Signed-off-by: Herbert Xu --- drivers/crypto/caam/key_gen.c | 29 ++++++++++++++--------------- 1 file changed, 14 insertions(+), 15 deletions(-) diff --git a/drivers/crypto/caam/key_gen.c b/drivers/crypto/caam/key_gen.c index 871703c49d2c..e1eaf4ff9762 100644 --- a/drivers/crypto/caam/key_gen.c +++ b/drivers/crypto/caam/key_gen.c @@ -48,23 +48,29 @@ int gen_split_key(struct device *jrdev, u8 *key_out, int split_key_len, u32 *desc; struct split_key_result result; dma_addr_t dma_addr_in, dma_addr_out; - int ret = 0; + int ret = -ENOMEM; desc = kmalloc(CAAM_CMD_SZ * 6 + CAAM_PTR_SZ * 2, GFP_KERNEL | GFP_DMA); if (!desc) { dev_err(jrdev, "unable to allocate key input memory\n"); - return -ENOMEM; + return ret; } - init_job_desc(desc, 0); - dma_addr_in = dma_map_single(jrdev, (void *)key_in, keylen, DMA_TO_DEVICE); if (dma_mapping_error(jrdev, dma_addr_in)) { dev_err(jrdev, "unable to map key input memory\n"); - kfree(desc); - return -ENOMEM; + goto out_free; } + + dma_addr_out = dma_map_single(jrdev, key_out, split_key_pad_len, + DMA_FROM_DEVICE); + if (dma_mapping_error(jrdev, dma_addr_out)) { + dev_err(jrdev, "unable to map key output memory\n"); + goto out_unmap_in; + } + + init_job_desc(desc, 0); append_key(desc, dma_addr_in, keylen, CLASS_2 | KEY_DEST_CLASS_REG); /* Sets MDHA up into an HMAC-INIT */ @@ -81,13 +87,6 @@ int gen_split_key(struct device *jrdev, u8 *key_out, int split_key_len, * FIFO_STORE with the explicit split-key content store * (0x26 output type) */ - dma_addr_out = dma_map_single(jrdev, key_out, split_key_pad_len, - DMA_FROM_DEVICE); - if (dma_mapping_error(jrdev, dma_addr_out)) { - dev_err(jrdev, "unable to map key output memory\n"); - kfree(desc); - return -ENOMEM; - } append_fifo_store(desc, dma_addr_out, split_key_len, LDST_CLASS_2_CCB | FIFOST_TYPE_SPLIT_KEK); @@ -115,10 +114,10 @@ int gen_split_key(struct device *jrdev, u8 *key_out, int split_key_len, dma_unmap_single(jrdev, dma_addr_out, split_key_pad_len, DMA_FROM_DEVICE); +out_unmap_in: dma_unmap_single(jrdev, dma_addr_in, keylen, DMA_TO_DEVICE); - +out_free: kfree(desc); - return ret; } EXPORT_SYMBOL(gen_split_key); From 24c65bc7037e7d0f362c0df70d17dd72ee64b8b9 Mon Sep 17 00:00:00 2001 From: Greg Kurz Date: Fri, 31 Oct 2014 07:50:11 +0100 Subject: [PATCH 184/371] hwrng: pseries - port to new read API and fix stack corruption The add_early_randomness() function in drivers/char/hw_random/core.c passes a 16-byte buffer to pseries_rng_data_read(). Unfortunately, plpar_hcall() returns four 64-bit values and trashes 16 bytes on the stack. This bug has been lying around for a long time. It got unveiled by: commit d3cc7996473a7bdd33256029988ea690754e4e2a Author: Amit Shah Date: Thu Jul 10 15:42:34 2014 +0530 hwrng: fetch randomness only after device init It may trig a oops while loading or unloading the pseries-rng module for both PowerVM and PowerKVM guests. This patch does two things: - pass an intermediate well sized buffer to plpar_hcall(). This is acceptalbe since we're not on a hot path. - move to the new read API so that we know the return buffer size for sure. Cc: stable@vger.kernel.org Signed-off-by: Greg Kurz Signed-off-by: Herbert Xu --- drivers/char/hw_random/pseries-rng.c | 11 +++++++---- 1 file changed, 7 insertions(+), 4 deletions(-) diff --git a/drivers/char/hw_random/pseries-rng.c b/drivers/char/hw_random/pseries-rng.c index 6226aa08c36a..bcf86f91800a 100644 --- a/drivers/char/hw_random/pseries-rng.c +++ b/drivers/char/hw_random/pseries-rng.c @@ -25,18 +25,21 @@ #include -static int pseries_rng_data_read(struct hwrng *rng, u32 *data) +static int pseries_rng_read(struct hwrng *rng, void *data, size_t max, bool wait) { + u64 buffer[PLPAR_HCALL_BUFSIZE]; + size_t size = max < 8 ? max : 8; int rc; - rc = plpar_hcall(H_RANDOM, (unsigned long *)data); + rc = plpar_hcall(H_RANDOM, (unsigned long *)buffer); if (rc != H_SUCCESS) { pr_err_ratelimited("H_RANDOM call failed %d\n", rc); return -EIO; } + memcpy(data, buffer, size); /* The hypervisor interface returns 64 bits */ - return 8; + return size; } /** @@ -55,7 +58,7 @@ static unsigned long pseries_rng_get_desired_dma(struct vio_dev *vdev) static struct hwrng pseries_rng = { .name = KBUILD_MODNAME, - .data_read = pseries_rng_data_read, + .read = pseries_rng_read, }; static int __init pseries_rng_probe(struct vio_dev *dev, From d6a8b72edc92471283925ceb4ba12799b67c3ff8 Mon Sep 17 00:00:00 2001 From: Rodrigo Vivi Date: Wed, 5 Nov 2014 16:56:36 -0800 Subject: [PATCH 185/371] drm/i915: Disable caches for Global GTT. Global GTT doesn't have pat_sel[2:0] so it always point to pat_sel = 000; So the only way to avoid screen corruptions is setting PAT 0 to Uncached. MOCS can still be used though. But if userspace is trusting PTE for cache selection the safest thing to do is to let caches disabled. BSpec: "For GGTT, there is NO pat_sel[2:0] from the entry, so RTL will always use the value corresponding to pat_sel = 000" - System agent ggtt writes (i.e. cpu gtt mmaps) already work before this patch, i.e. the same uncached + snooping access like on gen6/7 seems to be in effect. - So this just fixes blitter/render access. Again it looks like it's not just uncached access, but uncached + snooping. So we can still hold onto all our assumptions wrt cpu clflushing on LLC machines. v2: Cleaner patch as suggested by Chris. v3: Add Daniel's comment Reference: https://bugs.freedesktop.org/show_bug.cgi?id=85576 Cc: Chris Wilson Cc: James Ausmus Cc: Daniel Vetter Cc: Jani Nikula Cc: Stable@vger.kernel.org Tested-by: James Ausmus Reviewed-by: James Ausmus Signed-off-by: Rodrigo Vivi Signed-off-by: Jani Nikula --- drivers/gpu/drm/i915/i915_gem_gtt.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.c b/drivers/gpu/drm/i915/i915_gem_gtt.c index b672b843fd5e..728938f02341 100644 --- a/drivers/gpu/drm/i915/i915_gem_gtt.c +++ b/drivers/gpu/drm/i915/i915_gem_gtt.c @@ -1902,6 +1902,22 @@ static void bdw_setup_private_ppat(struct drm_i915_private *dev_priv) GEN8_PPAT(6, GEN8_PPAT_WB | GEN8_PPAT_LLCELLC | GEN8_PPAT_AGE(2)) | GEN8_PPAT(7, GEN8_PPAT_WB | GEN8_PPAT_LLCELLC | GEN8_PPAT_AGE(3)); + if (!USES_PPGTT(dev_priv->dev)) + /* Spec: "For GGTT, there is NO pat_sel[2:0] from the entry, + * so RTL will always use the value corresponding to + * pat_sel = 000". + * So let's disable cache for GGTT to avoid screen corruptions. + * MOCS still can be used though. + * - System agent ggtt writes (i.e. cpu gtt mmaps) already work + * before this patch, i.e. the same uncached + snooping access + * like on gen6/7 seems to be in effect. + * - So this just fixes blitter/render access. Again it looks + * like it's not just uncached access, but uncached + snooping. + * So we can still hold onto all our assumptions wrt cpu + * clflushing on LLC machines. + */ + pat = GEN8_PPAT(0, GEN8_PPAT_UC); + /* XXX: spec defines this as 2 distinct registers. It's unclear if a 64b * write would work. */ I915_WRITE(GEN8_PRIVATE_PAT, pat); From a024d2e6f11836493d9e1751fca7b3c50fbfd215 Mon Sep 17 00:00:00 2001 From: Imre Deak Date: Wed, 10 Sep 2014 18:16:54 +0300 Subject: [PATCH 186/371] drm/i915: vlv: fix gunit HW state corruption during S4 suspend MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit During S4 freeze we don't call intel_suspend_complete(), which would save the gunit HW state, but during S4 thaw/restore events we call intel_resume_prepare() which restores it, thus ending up in a corrupted HW state. Fix this by calling intel_suspend_complete() from the corresponding freeze_late event handler. The issue was introduced in commit 016970beb05da6285c2f3ed2bee1c676cb75972e Author: Sagar Kamble Date: Wed Aug 13 23:07:06 2014 +0530 CC: Sagar Kamble Signed-off-by: Imre Deak Reviewed-by: Ville Syrjälä Signed-off-by: Daniel Vetter Signed-off-by: Jani Nikula --- drivers/gpu/drm/i915/i915_drv.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c index 055d5e7fbf12..2318b4c7a8f8 100644 --- a/drivers/gpu/drm/i915/i915_drv.c +++ b/drivers/gpu/drm/i915/i915_drv.c @@ -986,6 +986,15 @@ static int i915_pm_freeze(struct device *dev) return i915_drm_freeze(drm_dev); } +static int i915_pm_freeze_late(struct device *dev) +{ + struct pci_dev *pdev = to_pci_dev(dev); + struct drm_device *drm_dev = pci_get_drvdata(pdev); + struct drm_i915_private *dev_priv = drm_dev->dev_private; + + return intel_suspend_complete(dev_priv); +} + static int i915_pm_thaw_early(struct device *dev) { struct pci_dev *pdev = to_pci_dev(dev); @@ -1570,6 +1579,7 @@ static const struct dev_pm_ops i915_pm_ops = { .resume_early = i915_pm_resume_early, .resume = i915_pm_resume, .freeze = i915_pm_freeze, + .freeze_late = i915_pm_freeze_late, .thaw_early = i915_pm_thaw_early, .thaw = i915_pm_thaw, .poweroff = i915_pm_poweroff, From e1c412e75754ab7b7002f3e18a2652d999c40d4b Mon Sep 17 00:00:00 2001 From: Jani Nikula Date: Wed, 5 Nov 2014 14:46:31 +0200 Subject: [PATCH 187/371] drm/i915: safeguard against too high minimum brightness Never trust (your interpretation of) the VBT. Regression from commit 6dda730e55f412a6dfb181cae6784822ba463847 Author: Jani Nikula Date: Tue Jun 24 18:27:40 2014 +0300 drm/i915: respect the VBT minimum backlight brightness causing div by zero if VBT minimum brightness equals maximum brightness. Despite my attempts I've failed in my detective work to figure out what the root cause is. This is not the real fix, but we have to do something. Reported-by: Mike Auty Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=86551 Cc: stable@vger.kernel.org (v3.17+) Reviewed-by: Daniel Vetter Signed-off-by: Jani Nikula --- drivers/gpu/drm/i915/intel_panel.c | 17 +++++++++++++++-- 1 file changed, 15 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_panel.c b/drivers/gpu/drm/i915/intel_panel.c index 0e018cb49147..41b3be217493 100644 --- a/drivers/gpu/drm/i915/intel_panel.c +++ b/drivers/gpu/drm/i915/intel_panel.c @@ -1098,12 +1098,25 @@ static u32 get_backlight_min_vbt(struct intel_connector *connector) struct drm_device *dev = connector->base.dev; struct drm_i915_private *dev_priv = dev->dev_private; struct intel_panel *panel = &connector->panel; + int min; WARN_ON(panel->backlight.max == 0); + /* + * XXX: If the vbt value is 255, it makes min equal to max, which leads + * to problems. There are such machines out there. Either our + * interpretation is wrong or the vbt has bogus data. Or both. Safeguard + * against this by letting the minimum be at most (arbitrarily chosen) + * 25% of the max. + */ + min = clamp_t(int, dev_priv->vbt.backlight.min_brightness, 0, 64); + if (min != dev_priv->vbt.backlight.min_brightness) { + DRM_DEBUG_KMS("clamping VBT min backlight %d/255 to %d/255\n", + dev_priv->vbt.backlight.min_brightness, min); + } + /* vbt value is a coefficient in range [0..255] */ - return scale(dev_priv->vbt.backlight.min_brightness, 0, 255, - 0, panel->backlight.max); + return scale(min, 0, 255, 0, panel->backlight.max); } static int bdw_setup_backlight(struct intel_connector *connector) From e4742b1e786ca386e88e6cfb2801e14e15e365cd Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Thu, 6 Nov 2014 09:27:11 -0800 Subject: [PATCH 188/371] Input: synaptics - add min/max quirk for Lenovo T440s The new Lenovo T440s laptop has a different PnP ID "LEN0039", and it needs the similar min/max quirk to make its clickpad working. BugLink: https://bugzilla.opensuse.org/show_bug.cgi?id=903748 Reported-and-tested-by: Joschi Brauchle Cc: Signed-off-by: Takashi Iwai Signed-off-by: Dmitry Torokhov --- drivers/input/mouse/synaptics.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/input/mouse/synaptics.c b/drivers/input/mouse/synaptics.c index 9031a0a28ea4..2a7a9174c702 100644 --- a/drivers/input/mouse/synaptics.c +++ b/drivers/input/mouse/synaptics.c @@ -135,8 +135,8 @@ static const struct min_max_quirk min_max_pnpid_table[] = { 1232, 5710, 1156, 4696 }, { - (const char * const []){"LEN0034", "LEN0036", "LEN2002", - "LEN2004", NULL}, + (const char * const []){"LEN0034", "LEN0036", "LEN0039", + "LEN2002", "LEN2004", NULL}, 1024, 5112, 2024, 4832 }, { @@ -163,6 +163,7 @@ static const char * const topbuttonpad_pnp_ids[] = { "LEN0036", /* T440 */ "LEN0037", "LEN0038", + "LEN0039", /* T440s */ "LEN0041", "LEN0042", /* Yoga */ "LEN0045", From a8ead0ecb9d4ce472f4cdab936d6f18e41e3a9ee Mon Sep 17 00:00:00 2001 From: Roger Quadros Date: Tue, 21 Oct 2014 14:25:45 +0300 Subject: [PATCH 189/371] ARM: dts: am335x-evm: Fix 5th NAND partition's name The 5th NAND partition should be named "NAND.u-boot-spl-os" instead of "NAND.u-boot-spl". This is to be consistent with other TI boards as well as u-boot. Fixes: 91994facdd2d ("ARM: dts: am335x-evm: NAND: update MTD partition table") Signed-off-by: Roger Quadros Signed-off-by: Sekhar Nori Signed-off-by: Tony Lindgren --- arch/arm/boot/dts/am335x-evm.dts | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm/boot/dts/am335x-evm.dts b/arch/arm/boot/dts/am335x-evm.dts index e2156a583de7..c4b968f0feb5 100644 --- a/arch/arm/boot/dts/am335x-evm.dts +++ b/arch/arm/boot/dts/am335x-evm.dts @@ -489,7 +489,7 @@ reg = <0x00060000 0x00020000>; }; partition@4 { - label = "NAND.u-boot-spl"; + label = "NAND.u-boot-spl-os"; reg = <0x00080000 0x00040000>; }; partition@5 { From 2c2a9cbd64387d6b70ac5db013e9bfe9412c7354 Mon Sep 17 00:00:00 2001 From: Karl Beldan Date: Wed, 5 Nov 2014 15:32:59 +0100 Subject: [PATCH 190/371] net: mv643xx_eth: reclaim TX skbs only when released by the HW ATM, txq_reclaim will dequeue and free an skb for each tx desc released by the hw that has TX_LAST_DESC set. However, in case of TSO, each hw desc embedding the last part of a segment has TX_LAST_DESC set, losing the one-to-one 'last skb frag'/'TX_LAST_DESC set' correspondance, which causes data corruption. Fix this by checking TX_ENABLE_INTERRUPT instead of TX_LAST_DESC, and warn when trying to dequeue from an empty txq (which can be symptomatic of releasing skbs prematurely). Fixes: 3ae8f4e0b98 ('net: mv643xx_eth: Implement software TSO') Reported-by: Slawomir Gajzner Reported-by: Julien D'Ascenzio Signed-off-by: Karl Beldan Cc: Ian Campbell Cc: Eric Dumazet Cc: Ezequiel Garcia Cc: Sebastian Hesselbarth Signed-off-by: David S. Miller --- drivers/net/ethernet/marvell/mv643xx_eth.c | 18 ++++++++++-------- 1 file changed, 10 insertions(+), 8 deletions(-) diff --git a/drivers/net/ethernet/marvell/mv643xx_eth.c b/drivers/net/ethernet/marvell/mv643xx_eth.c index b151a949f352..d44560d1d268 100644 --- a/drivers/net/ethernet/marvell/mv643xx_eth.c +++ b/drivers/net/ethernet/marvell/mv643xx_eth.c @@ -1047,7 +1047,6 @@ static int txq_reclaim(struct tx_queue *txq, int budget, int force) int tx_index; struct tx_desc *desc; u32 cmd_sts; - struct sk_buff *skb; tx_index = txq->tx_used_desc; desc = &txq->tx_desc_area[tx_index]; @@ -1066,19 +1065,22 @@ static int txq_reclaim(struct tx_queue *txq, int budget, int force) reclaimed++; txq->tx_desc_count--; - skb = NULL; - if (cmd_sts & TX_LAST_DESC) - skb = __skb_dequeue(&txq->tx_skb); + if (!IS_TSO_HEADER(txq, desc->buf_ptr)) + dma_unmap_single(mp->dev->dev.parent, desc->buf_ptr, + desc->byte_cnt, DMA_TO_DEVICE); + + if (cmd_sts & TX_ENABLE_INTERRUPT) { + struct sk_buff *skb = __skb_dequeue(&txq->tx_skb); + + if (!WARN_ON(!skb)) + dev_kfree_skb(skb); + } if (cmd_sts & ERROR_SUMMARY) { netdev_info(mp->dev, "tx error\n"); mp->dev->stats.tx_errors++; } - if (!IS_TSO_HEADER(txq, desc->buf_ptr)) - dma_unmap_single(mp->dev->dev.parent, desc->buf_ptr, - desc->byte_cnt, DMA_TO_DEVICE); - dev_kfree_skb(skb); } __netif_tx_unlock_bh(nq); From 4484d0524e86dcb2fb5ad0805b09d3e74559ebd5 Mon Sep 17 00:00:00 2001 From: Mugunthan V N Date: Wed, 5 Nov 2014 18:33:31 +0530 Subject: [PATCH 191/371] drivers: net: cpsw: remove cpsw_ale_stop from cpsw_ale_destroy when cpsw is build as modulea and simple insert and removal of module creates a deadlock, due to delete timer. the timer is created and destroyed in cpsw_ale_start and cpsw_ale_stop which are from device open and close. root@am437x-evm:~# modprobe -r ti_cpsw [ 158.505333] INFO: trying to register non-static key. [ 158.510623] the code is fine but needs lockdep annotation. [ 158.516448] turning off the locking correctness validator. [ 158.522282] CPU: 0 PID: 1339 Comm: modprobe Not tainted 3.14.23-00445-gd41c88f #44 [ 158.530359] [] (unwind_backtrace) from [] (show_stack+0x10/0x14) [ 158.538603] [] (show_stack) from [] (dump_stack+0x78/0x94) [ 158.546295] [] (dump_stack) from [] (__lock_acquire+0x176c/0x1b74) [ 158.554711] [] (__lock_acquire) from [] (lock_acquire+0x9c/0x104) [ 158.563043] [] (lock_acquire) from [] (del_timer_sync+0x44/0xd8) [ 158.571289] [] (del_timer_sync) from [] (cpsw_ale_destroy+0x10/0x3c [ti_cpsw]) [ 158.580821] [] (cpsw_ale_destroy [ti_cpsw]) from [] (cpsw_remove+0x30/0xa0 [ti_cpsw]) [ 158.591000] [] (cpsw_remove [ti_cpsw]) from [] (platform_drv_remove+0x18/0x1c) [ 158.600527] [] (platform_drv_remove) from [] (__device_release_driver+0x70/0xc8) [ 158.610236] [] (__device_release_driver) from [] (driver_detach+0xb4/0xb8) [ 158.619386] [] (driver_detach) from [] (bus_remove_driver+0x4c/0x90) [ 158.627988] [] (bus_remove_driver) from [] (SyS_delete_module+0x10c/0x198) [ 158.637144] [] (SyS_delete_module) from [] (ret_fast_syscall+0x0/0x48) [ 179.524727] INFO: rcu_sched detected stalls on CPUs/tasks: {} (detected by 0, t=2102 jiffies, g=1487, c=1486, q=6) [ 179.535741] INFO: Stall ended before state dump start Signed-off-by: Mugunthan V N Signed-off-by: David S. Miller --- drivers/net/ethernet/ti/cpsw_ale.c | 1 - 1 file changed, 1 deletion(-) diff --git a/drivers/net/ethernet/ti/cpsw_ale.c b/drivers/net/ethernet/ti/cpsw_ale.c index 3ae83879a75f..097ebe7077ac 100644 --- a/drivers/net/ethernet/ti/cpsw_ale.c +++ b/drivers/net/ethernet/ti/cpsw_ale.c @@ -785,7 +785,6 @@ int cpsw_ale_destroy(struct cpsw_ale *ale) { if (!ale) return -EINVAL; - cpsw_ale_stop(ale); cpsw_ale_control_set(ale, 0, ALE_ENABLE, 0); kfree(ale); return 0; From 5816c3dafb6c63fd5c7b9f3f707c8565811d9916 Mon Sep 17 00:00:00 2001 From: Ryo Munakata Date: Wed, 5 Nov 2014 23:45:58 +0900 Subject: [PATCH 192/371] net/9p: remove a comment about pref member which doesn't exist Signed-off-by: Ryo Munakata Signed-off-by: David S. Miller --- include/net/9p/transport.h | 1 - 1 file changed, 1 deletion(-) diff --git a/include/net/9p/transport.h b/include/net/9p/transport.h index d9fa68f26c41..2a25dec30211 100644 --- a/include/net/9p/transport.h +++ b/include/net/9p/transport.h @@ -34,7 +34,6 @@ * @list: used to maintain a list of currently available transports * @name: the human-readable name of the transport * @maxsize: transport provided maximum packet size - * @pref: Preferences of this transport * @def: set if this transport should be considered the default * @create: member function to create a new connection on this transport * @close: member function to discard a connection on this transport From b31f65fb4383a49bdcfa465176754b37e44e1e17 Mon Sep 17 00:00:00 2001 From: Andrew Lunn Date: Wed, 5 Nov 2014 19:47:28 +0100 Subject: [PATCH 193/371] net: dsa: slave: Fix autoneg for phys on switch MDIO bus When the ports phys are connected to the switches internal MDIO bus, we need to connect the phy to the slave netdev, otherwise auto-negotiation etc, does not work. Signed-off-by: Andrew Lunn Signed-off-by: David S. Miller --- net/dsa/slave.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/net/dsa/slave.c b/net/dsa/slave.c index 6d1817449c36..ab03e00ffe8f 100644 --- a/net/dsa/slave.c +++ b/net/dsa/slave.c @@ -489,11 +489,14 @@ static void dsa_slave_phy_setup(struct dsa_slave_priv *p, /* We could not connect to a designated PHY, so use the switch internal * MDIO bus instead */ - if (!p->phy) + if (!p->phy) { p->phy = ds->slave_mii_bus->phy_map[p->port]; - else + phy_connect_direct(slave_dev, p->phy, dsa_slave_adjust_link, + p->phy_interface); + } else { pr_info("attached PHY at address %d [%s]\n", p->phy->addr, p->phy->drv->name); + } } int dsa_slave_suspend(struct net_device *slave_dev) From c4dc304677e8d566572c4738d95c48be150c6606 Mon Sep 17 00:00:00 2001 From: Francesco Ruggeri Date: Fri, 10 Oct 2014 13:09:53 -0700 Subject: [PATCH 194/371] tty: Fix pty master poll() after slave closes v2 Commit f95499c3030f ("n_tty: Don't wait for buffer work in read() loop") introduces a race window where a pty master can be signalled that the pty slave was closed before all the data that the slave wrote is delivered. Commit f8747d4a466a ("tty: Fix pty master read() after slave closes") fixed the problem in case of n_tty_read, but the problem still exists for n_tty_poll. This can be seen by running 'for ((i=0; i<100;i++));do ./test.py ;done' where test.py is: import os, select, pty (pid, pty_fd) = pty.fork() if pid == 0: os.write(1, 'This string should be received by parent') else: poller = select.epoll() poller.register( pty_fd, select.EPOLLIN ) ready = poller.poll( 1 * 1000 ) for fd, events in ready: if not events & select.EPOLLIN: print 'missed POLLIN event' else: print os.read(fd, 100) poller.close() The string from the slave is missed several times. This patch takes the same approach as the fix for read and special cases this condition for poll. Tested on 3.16. Signed-off-by: Francesco Ruggeri Signed-off-by: Greg Kroah-Hartman --- drivers/tty/n_tty.c | 13 +++++++++---- 1 file changed, 9 insertions(+), 4 deletions(-) diff --git a/drivers/tty/n_tty.c b/drivers/tty/n_tty.c index 89c4cee253e3..2e900a98c3e3 100644 --- a/drivers/tty/n_tty.c +++ b/drivers/tty/n_tty.c @@ -2413,12 +2413,17 @@ static unsigned int n_tty_poll(struct tty_struct *tty, struct file *file, poll_wait(file, &tty->read_wait, wait); poll_wait(file, &tty->write_wait, wait); - if (input_available_p(tty, 1)) - mask |= POLLIN | POLLRDNORM; - if (tty->packet && tty->link->ctrl_status) - mask |= POLLPRI | POLLIN | POLLRDNORM; if (test_bit(TTY_OTHER_CLOSED, &tty->flags)) mask |= POLLHUP; + if (input_available_p(tty, 1)) + mask |= POLLIN | POLLRDNORM; + else if (mask & POLLHUP) { + tty_flush_to_ldisc(tty); + if (input_available_p(tty, 1)) + mask |= POLLIN | POLLRDNORM; + } + if (tty->packet && tty->link->ctrl_status) + mask |= POLLPRI | POLLIN | POLLRDNORM; if (tty_hung_up_p(file)) mask |= POLLHUP; if (!(mask & (POLLHUP | POLLIN | POLLRDNORM))) { From 2a8cdfde9237c4e1bd7c2e68c415b006491d23cc Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Thu, 6 Nov 2014 18:08:33 +0100 Subject: [PATCH 195/371] USB: cdc-acm: add quirk for control-line state requests Add new quirk for devices that cannot handle control-line state requests. Note that we currently send these requests to all devices, regardless of whether they claim to support it, but that errors are only logged if support is claimed. Since commit 0943d8ead30e ("USB: cdc-acm: use tty-port dtr_rts"), which only changed the timings for these requests slightly, this has been reported to cause occasional firmware crashes on Simtec Electronics Entropy Key devices after re-enumeration. Enable the quirk for this device. Reported-by: Nix Tested-by: Nix Cc: stable # v3.16 Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/class/cdc-acm.c | 14 ++++++++++++-- drivers/usb/class/cdc-acm.h | 2 ++ 2 files changed, 14 insertions(+), 2 deletions(-) diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c index 9d6495424b06..077d58ac3dcb 100644 --- a/drivers/usb/class/cdc-acm.c +++ b/drivers/usb/class/cdc-acm.c @@ -148,8 +148,15 @@ static int acm_ctrl_msg(struct acm *acm, int request, int value, /* devices aren't required to support these requests. * the cdc acm descriptor tells whether they do... */ -#define acm_set_control(acm, control) \ - acm_ctrl_msg(acm, USB_CDC_REQ_SET_CONTROL_LINE_STATE, control, NULL, 0) +static inline int acm_set_control(struct acm *acm, int control) +{ + if (acm->quirks & QUIRK_CONTROL_LINE_STATE) + return -EOPNOTSUPP; + + return acm_ctrl_msg(acm, USB_CDC_REQ_SET_CONTROL_LINE_STATE, + control, NULL, 0); +} + #define acm_set_line(acm, line) \ acm_ctrl_msg(acm, USB_CDC_REQ_SET_LINE_CODING, 0, line, sizeof *(line)) #define acm_send_break(acm, ms) \ @@ -1320,6 +1327,7 @@ made_compressed_probe: tty_port_init(&acm->port); acm->port.ops = &acm_port_ops; init_usb_anchor(&acm->delayed); + acm->quirks = quirks; buf = usb_alloc_coherent(usb_dev, ctrlsize, GFP_KERNEL, &acm->ctrl_dma); if (!buf) { @@ -1687,6 +1695,8 @@ static const struct usb_device_id acm_ids[] = { { USB_DEVICE(0x0572, 0x1328), /* Shiro / Aztech USB MODEM UM-3100 */ .driver_info = NO_UNION_NORMAL, /* has no union descriptor */ }, + { USB_DEVICE(0x20df, 0x0001), /* Simtec Electronics Entropy Key */ + .driver_info = QUIRK_CONTROL_LINE_STATE, }, { USB_DEVICE(0x2184, 0x001c) }, /* GW Instek AFG-2225 */ { USB_DEVICE(0x22b8, 0x6425), /* Motorola MOTOMAGX phones */ }, diff --git a/drivers/usb/class/cdc-acm.h b/drivers/usb/class/cdc-acm.h index fc75651afe1c..d3251ebd09e2 100644 --- a/drivers/usb/class/cdc-acm.h +++ b/drivers/usb/class/cdc-acm.h @@ -121,6 +121,7 @@ struct acm { unsigned int throttle_req:1; /* throttle requested */ u8 bInterval; struct usb_anchor delayed; /* writes queued for a device about to be woken */ + unsigned long quirks; }; #define CDC_DATA_INTERFACE_TYPE 0x0a @@ -132,3 +133,4 @@ struct acm { #define NOT_A_MODEM BIT(3) #define NO_DATA_INTERFACE BIT(4) #define IGNORE_DEVICE BIT(5) +#define QUIRK_CONTROL_LINE_STATE BIT(6) From dc4edad6530a9b7b66c3d905e2bc06021a05dcad Mon Sep 17 00:00:00 2001 From: Jammy Zhou Date: Mon, 3 Nov 2014 08:58:20 -0500 Subject: [PATCH 196/371] drm/radeon: set correct CE ram size for CIK CE ram size is 32k/0k/0k for GFX/CS0/CS1 with CIK Ported from amdgpu driver. Signed-off-by: Jammy Zhou Signed-off-by: Alex Deucher Cc: stable@vger.kernel.org --- drivers/gpu/drm/radeon/cik.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/radeon/cik.c b/drivers/gpu/drm/radeon/cik.c index 377afa504d2b..af6c7c5461c1 100644 --- a/drivers/gpu/drm/radeon/cik.c +++ b/drivers/gpu/drm/radeon/cik.c @@ -4313,8 +4313,8 @@ static int cik_cp_gfx_start(struct radeon_device *rdev) /* init the CE partitions. CE only used for gfx on CIK */ radeon_ring_write(ring, PACKET3(PACKET3_SET_BASE, 2)); radeon_ring_write(ring, PACKET3_BASE_INDEX(CE_PARTITION_BASE)); - radeon_ring_write(ring, 0xc000); - radeon_ring_write(ring, 0xc000); + radeon_ring_write(ring, 0x8000); + radeon_ring_write(ring, 0x8000); /* setup clear context state */ radeon_ring_write(ring, PACKET3(PACKET3_PREAMBLE_CNTL, 0)); From 8efe82ca908400785253c8f0dfcf301e6bd93488 Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Mon, 3 Nov 2014 09:57:46 -0500 Subject: [PATCH 197/371] drm/radeon: make sure mode init is complete in bandwidth_update The power management code calls into the display code for certain things. If certain power management sysfs attributes are called before the driver has finished initializing all of the hardware we can run into problems with uninitialized modesetting state. Add a check to make sure modesetting init has completed to the bandwidth update callbacks to fix this. Can be triggered by the tlp and laptop start up scripts depending on the timing. bugs: https://bugzilla.kernel.org/show_bug.cgi?id=83611 https://bugs.freedesktop.org/show_bug.cgi?id=85771 Signed-off-by: Alex Deucher Cc: stable@vger.kernel.org --- drivers/gpu/drm/radeon/cik.c | 3 +++ drivers/gpu/drm/radeon/evergreen.c | 3 +++ drivers/gpu/drm/radeon/r100.c | 3 +++ drivers/gpu/drm/radeon/rs600.c | 3 +++ drivers/gpu/drm/radeon/rs690.c | 3 +++ drivers/gpu/drm/radeon/rv515.c | 3 +++ drivers/gpu/drm/radeon/si.c | 3 +++ 7 files changed, 21 insertions(+) diff --git a/drivers/gpu/drm/radeon/cik.c b/drivers/gpu/drm/radeon/cik.c index af6c7c5461c1..89c01fa6dd8e 100644 --- a/drivers/gpu/drm/radeon/cik.c +++ b/drivers/gpu/drm/radeon/cik.c @@ -9447,6 +9447,9 @@ void dce8_bandwidth_update(struct radeon_device *rdev) u32 num_heads = 0, lb_size; int i; + if (!rdev->mode_info.mode_config_initialized) + return; + radeon_update_display_priority(rdev); for (i = 0; i < rdev->num_crtc; i++) { diff --git a/drivers/gpu/drm/radeon/evergreen.c b/drivers/gpu/drm/radeon/evergreen.c index f37d39d2bbbc..d1e93ebce446 100644 --- a/drivers/gpu/drm/radeon/evergreen.c +++ b/drivers/gpu/drm/radeon/evergreen.c @@ -2345,6 +2345,9 @@ void evergreen_bandwidth_update(struct radeon_device *rdev) u32 num_heads = 0, lb_size; int i; + if (!rdev->mode_info.mode_config_initialized) + return; + radeon_update_display_priority(rdev); for (i = 0; i < rdev->num_crtc; i++) { diff --git a/drivers/gpu/drm/radeon/r100.c b/drivers/gpu/drm/radeon/r100.c index 10f8be0ee173..b53b31a7b76f 100644 --- a/drivers/gpu/drm/radeon/r100.c +++ b/drivers/gpu/drm/radeon/r100.c @@ -3207,6 +3207,9 @@ void r100_bandwidth_update(struct radeon_device *rdev) uint32_t pixel_bytes1 = 0; uint32_t pixel_bytes2 = 0; + if (!rdev->mode_info.mode_config_initialized) + return; + radeon_update_display_priority(rdev); if (rdev->mode_info.crtcs[0]->base.enabled) { diff --git a/drivers/gpu/drm/radeon/rs600.c b/drivers/gpu/drm/radeon/rs600.c index 5f6db4629aaa..9acb1c3c005b 100644 --- a/drivers/gpu/drm/radeon/rs600.c +++ b/drivers/gpu/drm/radeon/rs600.c @@ -879,6 +879,9 @@ void rs600_bandwidth_update(struct radeon_device *rdev) u32 d1mode_priority_a_cnt, d2mode_priority_a_cnt; /* FIXME: implement full support */ + if (!rdev->mode_info.mode_config_initialized) + return; + radeon_update_display_priority(rdev); if (rdev->mode_info.crtcs[0]->base.enabled) diff --git a/drivers/gpu/drm/radeon/rs690.c b/drivers/gpu/drm/radeon/rs690.c index 3462b64369bf..0a2d36e81108 100644 --- a/drivers/gpu/drm/radeon/rs690.c +++ b/drivers/gpu/drm/radeon/rs690.c @@ -579,6 +579,9 @@ void rs690_bandwidth_update(struct radeon_device *rdev) u32 d1mode_priority_a_cnt, d1mode_priority_b_cnt; u32 d2mode_priority_a_cnt, d2mode_priority_b_cnt; + if (!rdev->mode_info.mode_config_initialized) + return; + radeon_update_display_priority(rdev); if (rdev->mode_info.crtcs[0]->base.enabled) diff --git a/drivers/gpu/drm/radeon/rv515.c b/drivers/gpu/drm/radeon/rv515.c index 8a477bf1fdb3..c55d653aaf5f 100644 --- a/drivers/gpu/drm/radeon/rv515.c +++ b/drivers/gpu/drm/radeon/rv515.c @@ -1277,6 +1277,9 @@ void rv515_bandwidth_update(struct radeon_device *rdev) struct drm_display_mode *mode0 = NULL; struct drm_display_mode *mode1 = NULL; + if (!rdev->mode_info.mode_config_initialized) + return; + radeon_update_display_priority(rdev); if (rdev->mode_info.crtcs[0]->base.enabled) diff --git a/drivers/gpu/drm/radeon/si.c b/drivers/gpu/drm/radeon/si.c index eeea5b6a1775..7d5083dc4acb 100644 --- a/drivers/gpu/drm/radeon/si.c +++ b/drivers/gpu/drm/radeon/si.c @@ -2384,6 +2384,9 @@ void dce6_bandwidth_update(struct radeon_device *rdev) u32 num_heads = 0, lb_size; int i; + if (!rdev->mode_info.mode_config_initialized) + return; + radeon_update_display_priority(rdev); for (i = 0; i < rdev->num_crtc; i++) { From 0b021c5802fbe5addf6f89f5030f684adf04f7b7 Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Mon, 3 Nov 2014 11:27:17 -0500 Subject: [PATCH 198/371] drm/radeon: use gart for DMA IB tests Use gart rather than vram to avoid having to deal with the HDP cache. Port of adfed2b0587289013f8143c54913ddfd44ac1fd3 (drm/radeon: use gart memory for DMA ring tests) to the IB tests. Signed-off-by: Alex Deucher Cc: stable@vger.kernel.org --- drivers/gpu/drm/radeon/cik_sdma.c | 21 ++++++++++++--------- drivers/gpu/drm/radeon/r600_dma.c | 20 ++++++++++---------- 2 files changed, 22 insertions(+), 19 deletions(-) diff --git a/drivers/gpu/drm/radeon/cik_sdma.c b/drivers/gpu/drm/radeon/cik_sdma.c index 4e8432d07f15..d748963af08b 100644 --- a/drivers/gpu/drm/radeon/cik_sdma.c +++ b/drivers/gpu/drm/radeon/cik_sdma.c @@ -667,17 +667,20 @@ int cik_sdma_ib_test(struct radeon_device *rdev, struct radeon_ring *ring) { struct radeon_ib ib; unsigned i; + unsigned index; int r; - void __iomem *ptr = (void *)rdev->vram_scratch.ptr; u32 tmp = 0; + u64 gpu_addr; - if (!ptr) { - DRM_ERROR("invalid vram scratch pointer\n"); - return -EINVAL; - } + if (ring->idx == R600_RING_TYPE_DMA_INDEX) + index = R600_WB_DMA_RING_TEST_OFFSET; + else + index = CAYMAN_WB_DMA1_RING_TEST_OFFSET; + + gpu_addr = rdev->wb.gpu_addr + index; tmp = 0xCAFEDEAD; - writel(tmp, ptr); + rdev->wb.wb[index/4] = cpu_to_le32(tmp); r = radeon_ib_get(rdev, ring->idx, &ib, NULL, 256); if (r) { @@ -686,8 +689,8 @@ int cik_sdma_ib_test(struct radeon_device *rdev, struct radeon_ring *ring) } ib.ptr[0] = SDMA_PACKET(SDMA_OPCODE_WRITE, SDMA_WRITE_SUB_OPCODE_LINEAR, 0); - ib.ptr[1] = rdev->vram_scratch.gpu_addr & 0xfffffffc; - ib.ptr[2] = upper_32_bits(rdev->vram_scratch.gpu_addr); + ib.ptr[1] = lower_32_bits(gpu_addr); + ib.ptr[2] = upper_32_bits(gpu_addr); ib.ptr[3] = 1; ib.ptr[4] = 0xDEADBEEF; ib.length_dw = 5; @@ -704,7 +707,7 @@ int cik_sdma_ib_test(struct radeon_device *rdev, struct radeon_ring *ring) return r; } for (i = 0; i < rdev->usec_timeout; i++) { - tmp = readl(ptr); + tmp = le32_to_cpu(rdev->wb.wb[index/4]); if (tmp == 0xDEADBEEF) break; DRM_UDELAY(1); diff --git a/drivers/gpu/drm/radeon/r600_dma.c b/drivers/gpu/drm/radeon/r600_dma.c index aabc343b9a8f..cf0df45d455e 100644 --- a/drivers/gpu/drm/radeon/r600_dma.c +++ b/drivers/gpu/drm/radeon/r600_dma.c @@ -338,17 +338,17 @@ int r600_dma_ib_test(struct radeon_device *rdev, struct radeon_ring *ring) { struct radeon_ib ib; unsigned i; + unsigned index; int r; - void __iomem *ptr = (void *)rdev->vram_scratch.ptr; u32 tmp = 0; + u64 gpu_addr; - if (!ptr) { - DRM_ERROR("invalid vram scratch pointer\n"); - return -EINVAL; - } + if (ring->idx == R600_RING_TYPE_DMA_INDEX) + index = R600_WB_DMA_RING_TEST_OFFSET; + else + index = CAYMAN_WB_DMA1_RING_TEST_OFFSET; - tmp = 0xCAFEDEAD; - writel(tmp, ptr); + gpu_addr = rdev->wb.gpu_addr + index; r = radeon_ib_get(rdev, ring->idx, &ib, NULL, 256); if (r) { @@ -357,8 +357,8 @@ int r600_dma_ib_test(struct radeon_device *rdev, struct radeon_ring *ring) } ib.ptr[0] = DMA_PACKET(DMA_PACKET_WRITE, 0, 0, 1); - ib.ptr[1] = rdev->vram_scratch.gpu_addr & 0xfffffffc; - ib.ptr[2] = upper_32_bits(rdev->vram_scratch.gpu_addr) & 0xff; + ib.ptr[1] = lower_32_bits(gpu_addr); + ib.ptr[2] = upper_32_bits(gpu_addr) & 0xff; ib.ptr[3] = 0xDEADBEEF; ib.length_dw = 4; @@ -374,7 +374,7 @@ int r600_dma_ib_test(struct radeon_device *rdev, struct radeon_ring *ring) return r; } for (i = 0; i < rdev->usec_timeout; i++) { - tmp = readl(ptr); + tmp = le32_to_cpu(rdev->wb.wb[index/4]); if (tmp == 0xDEADBEEF) break; DRM_UDELAY(1); From 77783d06427293b2d711c45cfd4abc6494a1af9c Mon Sep 17 00:00:00 2001 From: Jan Kara Date: Fri, 7 Nov 2014 08:29:25 +1100 Subject: [PATCH 199/371] mm: Fix comment before truncate_setsize() XFS doesn't always hold i_mutex when calling truncate_setsize() and it uses a different lock to serialize truncates and writes. So fix the comment before truncate_setsize(). Reported-by: Jan Beulich Signed-off-by: Jan Kara Signed-off-by: Dave Chinner --- mm/truncate.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/mm/truncate.c b/mm/truncate.c index c646084e5eec..f1e4d6052369 100644 --- a/mm/truncate.c +++ b/mm/truncate.c @@ -715,8 +715,9 @@ EXPORT_SYMBOL(truncate_pagecache); * necessary) to @newsize. It will be typically be called from the filesystem's * setattr function when ATTR_SIZE is passed in. * - * Must be called with inode_mutex held and before all filesystem specific - * block truncation has been performed. + * Must be called with a lock serializing truncates and writes (generally + * i_mutex but e.g. xfs uses a different lock) and before all filesystem + * specific block truncation has been performed. */ void truncate_setsize(struct inode *inode, loff_t newsize) { From afa947cb52a8e73fe71915a0b0af6fcf98dfbe1a Mon Sep 17 00:00:00 2001 From: Dave Chinner Date: Fri, 7 Nov 2014 08:29:57 +1100 Subject: [PATCH 200/371] xfs: bulkstat btree walk doesn't terminate The bulkstat code has several different ways of detecting the end of an AG when doing a walk. They are not consistently detected, and the code that checks for the end of AG conditions is not consistently coded. Hence the are conditions where the walk code can get stuck in an endless loop making no progress and not triggering any termination conditions. Convert all the "tmp/i" status return codes from btree operations to a common name (stat) and apply end-of-ag detection to these operations consistently. cc: # 3.17 Signed-off-by: Dave Chinner Reviewed-by: Brian Foster Signed-off-by: Dave Chinner --- fs/xfs/xfs_itable.c | 19 ++++++++++--------- 1 file changed, 10 insertions(+), 9 deletions(-) diff --git a/fs/xfs/xfs_itable.c b/fs/xfs/xfs_itable.c index 7765ff743e91..16737cbbee17 100644 --- a/fs/xfs/xfs_itable.c +++ b/fs/xfs/xfs_itable.c @@ -356,7 +356,6 @@ xfs_bulkstat( int end_of_ag; /* set if we've seen the ag end */ int error; /* error code */ int fmterror;/* bulkstat formatter result */ - int i; /* loop index */ int icount; /* count of inodes good in irbuf */ size_t irbsize; /* size of irec buffer in bytes */ xfs_ino_t ino; /* inode number (filesystem) */ @@ -366,11 +365,11 @@ xfs_bulkstat( xfs_ino_t lastino; /* last inode number returned */ int nirbuf; /* size of irbuf */ int rval; /* return value error code */ - int tmp; /* result value from btree calls */ int ubcount; /* size of user's buffer */ int ubleft; /* bytes left in user's buffer */ char __user *ubufp; /* pointer into user's buffer */ int ubelem; /* spaces used in user's buffer */ + int stat; /* * Get the last inode value, see if there's nothing to do. @@ -436,13 +435,15 @@ xfs_bulkstat( agino = r.ir_startino + XFS_INODES_PER_CHUNK; } /* Increment to the next record */ - error = xfs_btree_increment(cur, 0, &tmp); + error = xfs_btree_increment(cur, 0, &stat); } else { /* Start of ag. Lookup the first inode chunk */ - error = xfs_inobt_lookup(cur, 0, XFS_LOOKUP_GE, &tmp); + error = xfs_inobt_lookup(cur, 0, XFS_LOOKUP_GE, &stat); } - if (error) + if (error || stat == 0) { + end_of_ag = 1; goto del_cursor; + } /* * Loop through inode btree records in this ag, @@ -451,8 +452,8 @@ xfs_bulkstat( while (irbp < irbufend && icount < ubcount) { struct xfs_inobt_rec_incore r; - error = xfs_inobt_get_rec(cur, &r, &i); - if (error || i == 0) { + error = xfs_inobt_get_rec(cur, &r, &stat); + if (error || stat == 0) { end_of_ag = 1; goto del_cursor; } @@ -473,8 +474,8 @@ xfs_bulkstat( * Set agino to after this chunk and bump the cursor. */ agino = r.ir_startino + XFS_INODES_PER_CHUNK; - error = xfs_btree_increment(cur, 0, &tmp); - if (error) { + error = xfs_btree_increment(cur, 0, &stat); + if (error || stat == 0) { end_of_ag = 1; goto del_cursor; } From bf4a5af20d25ecc8876978ad34b8db83b4235f3c Mon Sep 17 00:00:00 2001 From: Dave Chinner Date: Fri, 7 Nov 2014 08:30:30 +1100 Subject: [PATCH 201/371] xfs: bulkstat chunk formatting cursor is broken The xfs_bulkstat_agichunk formatting cursor takes buffer values from the main loop and passes them via the structure to the chunk formatter, and the writes the changed values back into the main loop local variables. Unfortunately, this complex dance is full of corner cases that aren't handled correctly. The biggest problem is that it is double handling the information in both the main loop and the chunk formatting function, leading to inconsistent updates and endless loops where progress is not made. To fix this, push the struct xfs_bulkstat_agichunk outwards to be the primary holder of user buffer information. this removes the double handling in the main loop. Also, pass the last inode processed by the chunk formatter as a separate parameter as it purely an output variable and is not related to the user buffer consumption cursor. Finally, the chunk formatting code is not shared by anyone, so make it local to xfs_itable.c. cc: # 3.17 Signed-off-by: Dave Chinner Reviewed-by: Brian Foster Signed-off-by: Dave Chinner --- fs/xfs/xfs_itable.c | 59 +++++++++++++++++++++------------------------ fs/xfs/xfs_itable.h | 16 ------------ 2 files changed, 28 insertions(+), 47 deletions(-) diff --git a/fs/xfs/xfs_itable.c b/fs/xfs/xfs_itable.c index 16737cbbee17..50a3e5995dd9 100644 --- a/fs/xfs/xfs_itable.c +++ b/fs/xfs/xfs_itable.c @@ -262,20 +262,26 @@ xfs_bulkstat_grab_ichunk( #define XFS_BULKSTAT_UBLEFT(ubleft) ((ubleft) >= statstruct_size) +struct xfs_bulkstat_agichunk { + char __user **ac_ubuffer;/* pointer into user's buffer */ + int ac_ubleft; /* bytes left in user's buffer */ + int ac_ubelem; /* spaces used in user's buffer */ +}; + /* * Process inodes in chunk with a pointer to a formatter function * that will iget the inode and fill in the appropriate structure. */ -int +static int xfs_bulkstat_ag_ichunk( struct xfs_mount *mp, xfs_agnumber_t agno, struct xfs_inobt_rec_incore *irbp, bulkstat_one_pf formatter, size_t statstruct_size, - struct xfs_bulkstat_agichunk *acp) + struct xfs_bulkstat_agichunk *acp, + xfs_ino_t *lastino) { - xfs_ino_t lastino = acp->ac_lastino; char __user **ubufp = acp->ac_ubuffer; int ubleft = acp->ac_ubleft; int ubelem = acp->ac_ubelem; @@ -295,7 +301,7 @@ xfs_bulkstat_ag_ichunk( /* Skip if this inode is free */ if (XFS_INOBT_MASK(chunkidx) & irbp->ir_free) { - lastino = ino; + *lastino = ino; continue; } @@ -313,7 +319,7 @@ xfs_bulkstat_ag_ichunk( ubleft = 0; break; } - lastino = ino; + *lastino = ino; continue; } if (fmterror == BULKSTAT_RV_GIVEUP) { @@ -325,10 +331,9 @@ xfs_bulkstat_ag_ichunk( *ubufp += ubused; ubleft -= ubused; ubelem++; - lastino = ino; + *lastino = ino; } - acp->ac_lastino = lastino; acp->ac_ubleft = ubleft; acp->ac_ubelem = ubelem; @@ -355,7 +360,6 @@ xfs_bulkstat( xfs_btree_cur_t *cur; /* btree cursor for ialloc btree */ int end_of_ag; /* set if we've seen the ag end */ int error; /* error code */ - int fmterror;/* bulkstat formatter result */ int icount; /* count of inodes good in irbuf */ size_t irbsize; /* size of irec buffer in bytes */ xfs_ino_t ino; /* inode number (filesystem) */ @@ -366,10 +370,8 @@ xfs_bulkstat( int nirbuf; /* size of irbuf */ int rval; /* return value error code */ int ubcount; /* size of user's buffer */ - int ubleft; /* bytes left in user's buffer */ - char __user *ubufp; /* pointer into user's buffer */ - int ubelem; /* spaces used in user's buffer */ int stat; + struct xfs_bulkstat_agichunk ac; /* * Get the last inode value, see if there's nothing to do. @@ -386,11 +388,13 @@ xfs_bulkstat( } ubcount = *ubcountp; /* statstruct's */ - ubleft = ubcount * statstruct_size; /* bytes */ - *ubcountp = ubelem = 0; + ac.ac_ubuffer = &ubuffer; + ac.ac_ubleft = ubcount * statstruct_size; /* bytes */; + ac.ac_ubelem = 0; + + *ubcountp = 0; *done = 0; - fmterror = 0; - ubufp = ubuffer; + irbuf = kmem_zalloc_greedy(&irbsize, PAGE_SIZE, PAGE_SIZE * 4); if (!irbuf) return -ENOMEM; @@ -402,7 +406,7 @@ xfs_bulkstat( * inode returned; 0 means start of the allocation group. */ rval = 0; - while (XFS_BULKSTAT_UBLEFT(ubleft) && agno < mp->m_sb.sb_agcount) { + while (XFS_BULKSTAT_UBLEFT(ac.ac_ubleft) && agno < mp->m_sb.sb_agcount) { cond_resched(); error = xfs_ialloc_read_agi(mp, NULL, agno, &agbp); if (error) @@ -497,28 +501,21 @@ del_cursor: */ irbufend = irbp; for (irbp = irbuf; - irbp < irbufend && XFS_BULKSTAT_UBLEFT(ubleft); irbp++) { - struct xfs_bulkstat_agichunk ac; - - ac.ac_lastino = lastino; - ac.ac_ubuffer = &ubuffer; - ac.ac_ubleft = ubleft; - ac.ac_ubelem = ubelem; + irbp < irbufend && XFS_BULKSTAT_UBLEFT(ac.ac_ubleft); + irbp++) { error = xfs_bulkstat_ag_ichunk(mp, agno, irbp, - formatter, statstruct_size, &ac); + formatter, statstruct_size, &ac, + &lastino); if (error) rval = error; - lastino = ac.ac_lastino; - ubleft = ac.ac_ubleft; - ubelem = ac.ac_ubelem; - cond_resched(); } + /* * Set up for the next loop iteration. */ - if (XFS_BULKSTAT_UBLEFT(ubleft)) { + if (XFS_BULKSTAT_UBLEFT(ac.ac_ubleft)) { if (end_of_ag) { agno++; agino = 0; @@ -531,11 +528,11 @@ del_cursor: * Done, we're either out of filesystem or space to put the data. */ kmem_free(irbuf); - *ubcountp = ubelem; + *ubcountp = ac.ac_ubelem; /* * Found some inodes, return them now and return the error next time. */ - if (ubelem) + if (ac.ac_ubelem) rval = 0; if (agno >= mp->m_sb.sb_agcount) { /* diff --git a/fs/xfs/xfs_itable.h b/fs/xfs/xfs_itable.h index aaed08022eb9..6ea8b3912fa4 100644 --- a/fs/xfs/xfs_itable.h +++ b/fs/xfs/xfs_itable.h @@ -30,22 +30,6 @@ typedef int (*bulkstat_one_pf)(struct xfs_mount *mp, int *ubused, int *stat); -struct xfs_bulkstat_agichunk { - xfs_ino_t ac_lastino; /* last inode returned */ - char __user **ac_ubuffer;/* pointer into user's buffer */ - int ac_ubleft; /* bytes left in user's buffer */ - int ac_ubelem; /* spaces used in user's buffer */ -}; - -int -xfs_bulkstat_ag_ichunk( - struct xfs_mount *mp, - xfs_agnumber_t agno, - struct xfs_inobt_rec_incore *irbp, - bulkstat_one_pf formatter, - size_t statstruct_size, - struct xfs_bulkstat_agichunk *acp); - /* * Values for stat return value. */ From 2b831ac6bc87d3cbcbb1a8816827b6923403e461 Mon Sep 17 00:00:00 2001 From: Dave Chinner Date: Fri, 7 Nov 2014 08:30:58 +1100 Subject: [PATCH 202/371] xfs: bulkstat chunk-formatter has issues The loop construct has issues: - clustidx is completely unused, so remove it. - the loop tries to be smart by terminating when the "freecount" tells it that all inodes are free. Just drop it as in most cases we have to scan all inodes in the chunk anyway. - move the "user buffer left" condition check to the only point where we consume space int eh user buffer. - move the initialisation of agino out of the loop, leaving just a simple loop control logic using the clusteridx. Also, double handling of the user buffer variables leads to problems tracking the current state - use the cursor variables directly rather than keeping local copies and then having to update the cursor before returning. cc: # 3.17 Signed-off-by: Dave Chinner Reviewed-by: Brian Foster Signed-off-by: Dave Chinner --- fs/xfs/xfs_itable.c | 60 +++++++++++++++++++-------------------------- 1 file changed, 25 insertions(+), 35 deletions(-) diff --git a/fs/xfs/xfs_itable.c b/fs/xfs/xfs_itable.c index 50a3e5995dd9..7ea2b113db1b 100644 --- a/fs/xfs/xfs_itable.c +++ b/fs/xfs/xfs_itable.c @@ -283,59 +283,49 @@ xfs_bulkstat_ag_ichunk( xfs_ino_t *lastino) { char __user **ubufp = acp->ac_ubuffer; - int ubleft = acp->ac_ubleft; - int ubelem = acp->ac_ubelem; - int chunkidx, clustidx; + int chunkidx; int error = 0; xfs_agino_t agino; - for (agino = irbp->ir_startino, chunkidx = clustidx = 0; - XFS_BULKSTAT_UBLEFT(ubleft) && - irbp->ir_freecount < XFS_INODES_PER_CHUNK; - chunkidx++, clustidx++, agino++) { - int fmterror; /* bulkstat formatter result */ + agino = irbp->ir_startino; + for (chunkidx = 0; chunkidx < XFS_INODES_PER_CHUNK; + chunkidx++, agino++) { + int fmterror; int ubused; xfs_ino_t ino = XFS_AGINO_TO_INO(mp, agno, agino); - ASSERT(chunkidx < XFS_INODES_PER_CHUNK); - /* Skip if this inode is free */ if (XFS_INOBT_MASK(chunkidx) & irbp->ir_free) { *lastino = ino; continue; } - /* - * Count used inodes as free so we can tell when the - * chunk is used up. - */ - irbp->ir_freecount++; - /* Get the inode and fill in a single buffer */ ubused = statstruct_size; - error = formatter(mp, ino, *ubufp, ubleft, &ubused, &fmterror); - if (fmterror == BULKSTAT_RV_NOTHING) { - if (error && error != -ENOENT && error != -EINVAL) { - ubleft = 0; - break; - } - *lastino = ino; - continue; - } - if (fmterror == BULKSTAT_RV_GIVEUP) { - ubleft = 0; + error = formatter(mp, ino, *ubufp, acp->ac_ubleft, + &ubused, &fmterror); + if (fmterror == BULKSTAT_RV_GIVEUP || + (error && error != -ENOENT && error != -EINVAL)) { + acp->ac_ubleft = 0; ASSERT(error); break; } - if (*ubufp) - *ubufp += ubused; - ubleft -= ubused; - ubelem++; - *lastino = ino; - } - acp->ac_ubleft = ubleft; - acp->ac_ubelem = ubelem; + /* be careful not to leak error if at end of chunk */ + if (fmterror == BULKSTAT_RV_NOTHING || error) { + *lastino = ino; + error = 0; + continue; + } + + *ubufp += ubused; + acp->ac_ubleft -= ubused; + acp->ac_ubelem++; + *lastino = ino; + + if (acp->ac_ubleft < statstruct_size) + break; + } return error; } From 6e57c542cb7e0e580eb53ae76a77875c7d92b4b1 Mon Sep 17 00:00:00 2001 From: Dave Chinner Date: Fri, 7 Nov 2014 08:31:13 +1100 Subject: [PATCH 203/371] xfs: bulkstat main loop logic is a mess There are a bunch of variables tha tare more wildy scoped than they need to be, obfuscated user buffer checks and tortured "next inode" tracking. This all needs cleaning up to expose the real issues that need fixing. cc: # 3.17 Signed-off-by: Dave Chinner Reviewed-by: Brian Foster Signed-off-by: Dave Chinner --- fs/xfs/xfs_itable.c | 56 +++++++++++++++++++-------------------------- 1 file changed, 24 insertions(+), 32 deletions(-) diff --git a/fs/xfs/xfs_itable.c b/fs/xfs/xfs_itable.c index 7ea2b113db1b..acae3355ab22 100644 --- a/fs/xfs/xfs_itable.c +++ b/fs/xfs/xfs_itable.c @@ -348,30 +348,23 @@ xfs_bulkstat( xfs_agino_t agino; /* inode # in allocation group */ xfs_agnumber_t agno; /* allocation group number */ xfs_btree_cur_t *cur; /* btree cursor for ialloc btree */ - int end_of_ag; /* set if we've seen the ag end */ - int error; /* error code */ - int icount; /* count of inodes good in irbuf */ size_t irbsize; /* size of irec buffer in bytes */ - xfs_ino_t ino; /* inode number (filesystem) */ - xfs_inobt_rec_incore_t *irbp; /* current irec buffer pointer */ xfs_inobt_rec_incore_t *irbuf; /* start of irec buffer */ - xfs_inobt_rec_incore_t *irbufend; /* end of good irec buffer entries */ xfs_ino_t lastino; /* last inode number returned */ int nirbuf; /* size of irbuf */ int rval; /* return value error code */ int ubcount; /* size of user's buffer */ - int stat; struct xfs_bulkstat_agichunk ac; + int error = 0; /* * Get the last inode value, see if there's nothing to do. */ - ino = (xfs_ino_t)*lastinop; - lastino = ino; - agno = XFS_INO_TO_AGNO(mp, ino); - agino = XFS_INO_TO_AGINO(mp, ino); + lastino = *lastinop; + agno = XFS_INO_TO_AGNO(mp, lastino); + agino = XFS_INO_TO_AGINO(mp, lastino); if (agno >= mp->m_sb.sb_agcount || - ino != XFS_AGINO_TO_INO(mp, agno, agino)) { + lastino != XFS_AGINO_TO_INO(mp, agno, agino)) { *done = 1; *ubcountp = 0; return 0; @@ -396,8 +389,13 @@ xfs_bulkstat( * inode returned; 0 means start of the allocation group. */ rval = 0; - while (XFS_BULKSTAT_UBLEFT(ac.ac_ubleft) && agno < mp->m_sb.sb_agcount) { - cond_resched(); + while (agno < mp->m_sb.sb_agcount) { + struct xfs_inobt_rec_incore *irbp = irbuf; + struct xfs_inobt_rec_incore *irbufend = irbuf + nirbuf; + bool end_of_ag = false; + int icount = 0; + int stat; + error = xfs_ialloc_read_agi(mp, NULL, agno, &agbp); if (error) break; @@ -407,10 +405,6 @@ xfs_bulkstat( */ cur = xfs_inobt_init_cursor(mp, NULL, agbp, agno, XFS_BTNUM_INO); - irbp = irbuf; - irbufend = irbuf + nirbuf; - end_of_ag = 0; - icount = 0; if (agino > 0) { /* * In the middle of an allocation group, we need to get @@ -435,7 +429,7 @@ xfs_bulkstat( error = xfs_inobt_lookup(cur, 0, XFS_LOOKUP_GE, &stat); } if (error || stat == 0) { - end_of_ag = 1; + end_of_ag = true; goto del_cursor; } @@ -448,7 +442,7 @@ xfs_bulkstat( error = xfs_inobt_get_rec(cur, &r, &stat); if (error || stat == 0) { - end_of_ag = 1; + end_of_ag = true; goto del_cursor; } @@ -470,7 +464,7 @@ xfs_bulkstat( agino = r.ir_startino + XFS_INODES_PER_CHUNK; error = xfs_btree_increment(cur, 0, &stat); if (error || stat == 0) { - end_of_ag = 1; + end_of_ag = true; goto del_cursor; } cond_resched(); @@ -491,7 +485,7 @@ del_cursor: */ irbufend = irbp; for (irbp = irbuf; - irbp < irbufend && XFS_BULKSTAT_UBLEFT(ac.ac_ubleft); + irbp < irbufend && ac.ac_ubleft >= statstruct_size; irbp++) { error = xfs_bulkstat_ag_ichunk(mp, agno, irbp, formatter, statstruct_size, &ac, @@ -502,17 +496,15 @@ del_cursor: cond_resched(); } - /* - * Set up for the next loop iteration. - */ - if (XFS_BULKSTAT_UBLEFT(ac.ac_ubleft)) { - if (end_of_ag) { - agno++; - agino = 0; - } else - agino = XFS_INO_TO_AGINO(mp, lastino); - } else + /* If we've run out of space, we are done */ + if (ac.ac_ubleft < statstruct_size) break; + + if (end_of_ag) { + agno++; + agino = 0; + } else + agino = XFS_INO_TO_AGINO(mp, lastino); } /* * Done, we're either out of filesystem or space to put the data. From febe3cbe38b0bc0a925906dc90e8d59048851f87 Mon Sep 17 00:00:00 2001 From: Dave Chinner Date: Fri, 7 Nov 2014 08:31:15 +1100 Subject: [PATCH 204/371] xfs: bulkstat error handling is broken The error propagation is a horror - xfs_bulkstat() returns a rval variable which is only set if there are formatter errors. Any sort of btree walk error or corruption will cause the bulkstat walk to terminate but will not pass an error back to userspace. Worse is the fact that formatter errors will also be ignored if any inodes were correctly formatted into the user buffer. Hence bulkstat can fail badly yet still report success to userspace. This causes significant issues with xfsdump not dumping everything in the filesystem yet reporting success. It's not until a restore fails that there is any indication that the dump was bad and tha bulkstat failed. This patch now triggers xfsdump to fail with bulkstat errors rather than silently missing files in the dump. This now causes bulkstat to fail when the lastino cookie does not fall inside an existing inode chunk. The pre-3.17 code tolerated that error by allowing the code to move to the next inode chunk as the agino target is guaranteed to fall into the next btree record. With the fixes up to this point in the series, xfsdump now passes on the troublesome filesystem image that exposes all these bugs. cc: Signed-off-by: Dave Chinner Reviewed-by: Brian Foster --- fs/xfs/xfs_itable.c | 29 +++++++++++++++++++---------- 1 file changed, 19 insertions(+), 10 deletions(-) diff --git a/fs/xfs/xfs_itable.c b/fs/xfs/xfs_itable.c index acae3355ab22..ff3f431671b9 100644 --- a/fs/xfs/xfs_itable.c +++ b/fs/xfs/xfs_itable.c @@ -236,8 +236,10 @@ xfs_bulkstat_grab_ichunk( XFS_WANT_CORRUPTED_RETURN(stat == 1); /* Check if the record contains the inode in request */ - if (irec->ir_startino + XFS_INODES_PER_CHUNK <= agino) - return -EINVAL; + if (irec->ir_startino + XFS_INODES_PER_CHUNK <= agino) { + *icount = 0; + return 0; + } idx = agino - irec->ir_startino + 1; if (idx < XFS_INODES_PER_CHUNK && @@ -352,7 +354,6 @@ xfs_bulkstat( xfs_inobt_rec_incore_t *irbuf; /* start of irec buffer */ xfs_ino_t lastino; /* last inode number returned */ int nirbuf; /* size of irbuf */ - int rval; /* return value error code */ int ubcount; /* size of user's buffer */ struct xfs_bulkstat_agichunk ac; int error = 0; @@ -388,7 +389,6 @@ xfs_bulkstat( * Loop over the allocation groups, starting from the last * inode returned; 0 means start of the allocation group. */ - rval = 0; while (agno < mp->m_sb.sb_agcount) { struct xfs_inobt_rec_incore *irbp = irbuf; struct xfs_inobt_rec_incore *irbufend = irbuf + nirbuf; @@ -491,13 +491,16 @@ del_cursor: formatter, statstruct_size, &ac, &lastino); if (error) - rval = error; + break; cond_resched(); } - /* If we've run out of space, we are done */ - if (ac.ac_ubleft < statstruct_size) + /* + * If we've run out of space or had a formatting error, we + * are now done + */ + if (ac.ac_ubleft < statstruct_size || error) break; if (end_of_ag) { @@ -511,11 +514,17 @@ del_cursor: */ kmem_free(irbuf); *ubcountp = ac.ac_ubelem; + /* - * Found some inodes, return them now and return the error next time. + * We found some inodes, so clear the error status and return them. + * The lastino pointer will point directly at the inode that triggered + * any error that occurred, so on the next call the error will be + * triggered again and propagated to userspace as there will be no + * formatted inodes in the buffer. */ if (ac.ac_ubelem) - rval = 0; + error = 0; + if (agno >= mp->m_sb.sb_agcount) { /* * If we ran out of filesystem, mark lastino as off @@ -527,7 +536,7 @@ del_cursor: } else *lastinop = (xfs_ino_t)lastino; - return rval; + return error; } int From 002758992693ae63c04122603ea9261a0a58d728 Mon Sep 17 00:00:00 2001 From: Dave Chinner Date: Fri, 7 Nov 2014 08:33:52 +1100 Subject: [PATCH 205/371] xfs: track bulkstat progress by agino The bulkstat main loop progress is tracked by the "lastino" variable, which is a full 64 bit inode. However, the loop actually works on agno/agino pairs, and so there's a significant disconnect between the rest of the loop and the main cursor. Convert this to use the agino, and pass the agino into the chunk formatting function and convert it too. This gets rid of the inconsistency in the loop processing, and finally makes it simple for us to skip inodes at any point in the loop simply by incrementing the agino cursor. cc: # 3.17 Signed-off-by: Dave Chinner Reviewed-by: Brian Foster Signed-off-by: Dave Chinner --- fs/xfs/xfs_itable.c | 71 ++++++++++++++++++++++----------------------- 1 file changed, 34 insertions(+), 37 deletions(-) diff --git a/fs/xfs/xfs_itable.c b/fs/xfs/xfs_itable.c index ff3f431671b9..894924a5129b 100644 --- a/fs/xfs/xfs_itable.c +++ b/fs/xfs/xfs_itable.c @@ -282,30 +282,31 @@ xfs_bulkstat_ag_ichunk( bulkstat_one_pf formatter, size_t statstruct_size, struct xfs_bulkstat_agichunk *acp, - xfs_ino_t *lastino) + xfs_agino_t *last_agino) { char __user **ubufp = acp->ac_ubuffer; int chunkidx; int error = 0; - xfs_agino_t agino; + xfs_agino_t agino = irbp->ir_startino; - agino = irbp->ir_startino; for (chunkidx = 0; chunkidx < XFS_INODES_PER_CHUNK; chunkidx++, agino++) { int fmterror; int ubused; - xfs_ino_t ino = XFS_AGINO_TO_INO(mp, agno, agino); + + /* inode won't fit in buffer, we are done */ + if (acp->ac_ubleft < statstruct_size) + break; /* Skip if this inode is free */ - if (XFS_INOBT_MASK(chunkidx) & irbp->ir_free) { - *lastino = ino; + if (XFS_INOBT_MASK(chunkidx) & irbp->ir_free) continue; - } /* Get the inode and fill in a single buffer */ ubused = statstruct_size; - error = formatter(mp, ino, *ubufp, acp->ac_ubleft, - &ubused, &fmterror); + error = formatter(mp, XFS_AGINO_TO_INO(mp, agno, agino), + *ubufp, acp->ac_ubleft, &ubused, &fmterror); + if (fmterror == BULKSTAT_RV_GIVEUP || (error && error != -ENOENT && error != -EINVAL)) { acp->ac_ubleft = 0; @@ -315,7 +316,6 @@ xfs_bulkstat_ag_ichunk( /* be careful not to leak error if at end of chunk */ if (fmterror == BULKSTAT_RV_NOTHING || error) { - *lastino = ino; error = 0; continue; } @@ -323,12 +323,18 @@ xfs_bulkstat_ag_ichunk( *ubufp += ubused; acp->ac_ubleft -= ubused; acp->ac_ubelem++; - *lastino = ino; - - if (acp->ac_ubleft < statstruct_size) - break; } + /* + * Post-update *last_agino. At this point, agino will always point one + * inode past the last inode we processed successfully. Hence we + * substract that inode when setting the *last_agino cursor so that we + * return the correct cookie to userspace. On the next bulkstat call, + * the inode under the lastino cookie will be skipped as we have already + * processed it here. + */ + *last_agino = agino - 1; + return error; } @@ -352,7 +358,6 @@ xfs_bulkstat( xfs_btree_cur_t *cur; /* btree cursor for ialloc btree */ size_t irbsize; /* size of irec buffer in bytes */ xfs_inobt_rec_incore_t *irbuf; /* start of irec buffer */ - xfs_ino_t lastino; /* last inode number returned */ int nirbuf; /* size of irbuf */ int ubcount; /* size of user's buffer */ struct xfs_bulkstat_agichunk ac; @@ -361,11 +366,10 @@ xfs_bulkstat( /* * Get the last inode value, see if there's nothing to do. */ - lastino = *lastinop; - agno = XFS_INO_TO_AGNO(mp, lastino); - agino = XFS_INO_TO_AGINO(mp, lastino); + agno = XFS_INO_TO_AGNO(mp, *lastinop); + agino = XFS_INO_TO_AGINO(mp, *lastinop); if (agno >= mp->m_sb.sb_agcount || - lastino != XFS_AGINO_TO_INO(mp, agno, agino)) { + *lastinop != XFS_AGINO_TO_INO(mp, agno, agino)) { *done = 1; *ubcountp = 0; return 0; @@ -420,7 +424,6 @@ xfs_bulkstat( irbp->ir_freecount = r.ir_freecount; irbp->ir_free = r.ir_free; irbp++; - agino = r.ir_startino + XFS_INODES_PER_CHUNK; } /* Increment to the next record */ error = xfs_btree_increment(cur, 0, &stat); @@ -458,10 +461,6 @@ xfs_bulkstat( irbp++; icount += XFS_INODES_PER_CHUNK - r.ir_freecount; } - /* - * Set agino to after this chunk and bump the cursor. - */ - agino = r.ir_startino + XFS_INODES_PER_CHUNK; error = xfs_btree_increment(cur, 0, &stat); if (error || stat == 0) { end_of_ag = true; @@ -481,7 +480,9 @@ del_cursor: if (error) break; /* - * Now format all the good inodes into the user's buffer. + * Now format all the good inodes into the user's buffer. The + * call to xfs_bulkstat_ag_ichunk() sets up the agino pointer + * for the next loop iteration. */ irbufend = irbp; for (irbp = irbuf; @@ -489,7 +490,7 @@ del_cursor: irbp++) { error = xfs_bulkstat_ag_ichunk(mp, agno, irbp, formatter, statstruct_size, &ac, - &lastino); + &agino); if (error) break; @@ -506,8 +507,7 @@ del_cursor: if (end_of_ag) { agno++; agino = 0; - } else - agino = XFS_INO_TO_AGINO(mp, lastino); + } } /* * Done, we're either out of filesystem or space to put the data. @@ -525,16 +525,13 @@ del_cursor: if (ac.ac_ubelem) error = 0; - if (agno >= mp->m_sb.sb_agcount) { - /* - * If we ran out of filesystem, mark lastino as off - * the end of the filesystem, so the next call - * will return immediately. - */ - *lastinop = (xfs_ino_t)XFS_AGINO_TO_INO(mp, agno, 0); + /* + * If we ran out of filesystem, lastino will point off the end of + * the filesystem so the next call will return immediately. + */ + *lastinop = XFS_AGINO_TO_INO(mp, agno, agino); + if (agno >= mp->m_sb.sb_agcount) *done = 1; - } else - *lastinop = (xfs_ino_t)lastino; return error; } From a158906dd7d4379e85ec371a14edfe1ce5f2318d Mon Sep 17 00:00:00 2001 From: Eli Cohen Date: Thu, 6 Nov 2014 12:51:21 +0200 Subject: [PATCH 206/371] net/mlx5_core: Fix race in create EQ After the EQ is created, it can possibly generate interrupts and the interrupt handler is referencing eq->dev. It is therefore required to set eq->dev before calling request_irq() so if an event is generated before request_irq() returns, we will have a valid eq->dev field. Signed-off-by: Eli Cohen Signed-off-by: David S. Miller --- drivers/net/ethernet/mellanox/mlx5/core/eq.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) diff --git a/drivers/net/ethernet/mellanox/mlx5/core/eq.c b/drivers/net/ethernet/mellanox/mlx5/core/eq.c index a278238a2db6..ad2c96a02a53 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/eq.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/eq.c @@ -374,15 +374,14 @@ int mlx5_create_map_eq(struct mlx5_core_dev *dev, struct mlx5_eq *eq, u8 vecidx, snprintf(eq->name, MLX5_MAX_EQ_NAME, "%s@pci:%s", name, pci_name(dev->pdev)); eq->eqn = out.eq_number; + eq->irqn = vecidx; + eq->dev = dev; + eq->doorbell = uar->map + MLX5_EQ_DOORBEL_OFFSET; err = request_irq(table->msix_arr[vecidx].vector, mlx5_msix_handler, 0, eq->name, eq); if (err) goto err_eq; - eq->irqn = vecidx; - eq->dev = dev; - eq->doorbell = uar->map + MLX5_EQ_DOORBEL_OFFSET; - err = mlx5_debug_eq_add(dev, eq); if (err) goto err_irq; From 364d1798efdf13c7f2b9d902228adf8e84f1d963 Mon Sep 17 00:00:00 2001 From: Eli Cohen Date: Thu, 6 Nov 2014 12:51:22 +0200 Subject: [PATCH 207/371] net/mlx5_core: Fix race on driver load When events arrive at driver load, the event handler gets called even before the spinlock and list are initialized. Fix this by moving the initialization before EQs creation. Signed-off-by: Eli Cohen Signed-off-by: David S. Miller --- drivers/net/ethernet/mellanox/mlx5/core/main.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/net/ethernet/mellanox/mlx5/core/main.c b/drivers/net/ethernet/mellanox/mlx5/core/main.c index 3d8e8e489b2d..71b10b210792 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/main.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/main.c @@ -864,14 +864,14 @@ static int init_one(struct pci_dev *pdev, dev->profile = &profile[prof_sel]; dev->event = mlx5_core_event; + INIT_LIST_HEAD(&priv->ctx_list); + spin_lock_init(&priv->ctx_lock); err = mlx5_dev_init(dev, pdev); if (err) { dev_err(&pdev->dev, "mlx5_dev_init failed %d\n", err); goto out; } - INIT_LIST_HEAD(&priv->ctx_list); - spin_lock_init(&priv->ctx_lock); err = mlx5_register_device(dev); if (err) { dev_err(&pdev->dev, "mlx5_register_device failed %d\n", err); From 44aa91ab2bb862540daa81403a1bc507496260fe Mon Sep 17 00:00:00 2001 From: Govindarajulu Varadarajan <_govind@gmx.com> Date: Thu, 6 Nov 2014 15:21:38 +0530 Subject: [PATCH 208/371] enic: handle error condition properly in enic_rq_indicate_buf In case of error in rx path, we free the buf->os_buf but we do not make it NULL. In next iteration we use the skb which is already freed. This causes the following crash. [ 886.154772] general protection fault: 0000 [#1] PREEMPT SMP [ 886.154851] Modules linked in: rpcsec_gss_krb5 auth_rpcgss oid_registry nfsv4 microcode evdev cirrus ttm drm_kms_helper drm enic syscopyarea sysfillrect sysimgblt psmouse i2c_piix4 serio_raw pcspkr i2c_core nfs lockd grace sunrpc fscache ext4 crc16 mbcache jbd2 sd_mod crc_t10dif crct10dif_common ata_generic ata_piix virtio_balloon libata scsi_mod uhci_hcd usbcore virtio_pci virtio_ring virtio usb_common [ 886.155199] CPU: 0 PID: 0 Comm: swapper/0 Tainted: G W 3.17.0-netnext-05668-g876bc7f #272 [ 886.155263] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 886.155304] task: ffffffff81a1d580 ti: ffffffff81a00000 task.ti: ffffffff81a00000 [ 886.155356] RIP: 0010:[] [] kfree_skb_list+0x10/0x30 [ 886.155418] RSP: 0018:ffff880210603d48 EFLAGS: 00010206 [ 886.155456] RAX: 0000000000000020 RBX: 0000000000000000 RCX: 0000000000000000 [ 886.155504] RDX: 0000000000000000 RSI: 0000000000000001 RDI: 004500084e000017 [ 886.155553] RBP: ffff880210603d50 R08: 00000000fe13d1b6 R09: 0000000000000001 [ 886.155601] R10: 0000000000000000 R11: 0000000000000000 R12: ffff880209ff2f00 [ 886.155650] R13: ffff88020ac0fe40 R14: ffff880209ff2f00 R15: ffff8800da8e3a80 [ 886.155699] FS: 0000000000000000(0000) GS:ffff880210600000(0000) knlGS:0000000000000000 [ 886.155774] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b [ 886.155814] CR2: 00007f0e0c925000 CR3: 0000000035e8b000 CR4: 00000000000006f0 [ 886.155865] Stack: [ 886.155882] 0000000000000000 ffff880210603d78 ffffffff81383f79 ffff880209ff2f00 [ 886.155942] ffff88020b0c0b40 000000000000c000 ffff880210603d90 ffffffff81383faf [ 886.156001] ffff880209ff2f00 ffff880210603da8 ffffffff8138406d ffff88020b1b08c0 [ 886.156061] Call Trace: [ 886.156080] [ 886.156095] [ 886.156112] [] skb_release_data+0xa9/0xc0 [ 886.157656] [] skb_release_all+0x1f/0x30 [ 886.159195] [] consume_skb+0x1d/0x40 [ 886.160719] [] __dev_kfree_skb_any+0x35/0x40 [ 886.162224] [] enic_rq_service.constprop.47+0xe5/0x5a0 [enic] [ 886.163756] [] enic_poll_msix_rq+0x199/0x370 [enic] [ 886.164730] [] net_rx_action+0x139/0x210 [ 886.164730] [] __do_softirq+0x14e/0x280 [ 886.164730] [] irq_exit+0x8e/0xb0 [ 886.164730] [] do_IRQ+0x5d/0x100 [ 886.164730] [] common_interrupt+0x72/0x72 fixes: a03bb56e67c357980dae886683733dab5583dc14 ("enic: implement rx_copybreak") Signed-off-by: Govindarajulu Varadarajan <_govind@gmx.com> Signed-off-by: David S. Miller --- drivers/net/ethernet/cisco/enic/enic_main.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/net/ethernet/cisco/enic/enic_main.c b/drivers/net/ethernet/cisco/enic/enic_main.c index 180e53fa628f..cd254d1ebd16 100644 --- a/drivers/net/ethernet/cisco/enic/enic_main.c +++ b/drivers/net/ethernet/cisco/enic/enic_main.c @@ -1037,7 +1037,10 @@ static void enic_rq_indicate_buf(struct vnic_rq *rq, enic->rq_truncated_pkts++; } + pci_unmap_single(enic->pdev, buf->dma_addr, buf->len, + PCI_DMA_FROMDEVICE); dev_kfree_skb_any(skb); + buf->os_buf = NULL; return; } @@ -1088,7 +1091,10 @@ static void enic_rq_indicate_buf(struct vnic_rq *rq, /* Buffer overflow */ + pci_unmap_single(enic->pdev, buf->dma_addr, buf->len, + PCI_DMA_FROMDEVICE); dev_kfree_skb_any(skb); + buf->os_buf = NULL; } } From f6b7734ba7b9c8c85c897c7b4b4e526bd5d7c978 Mon Sep 17 00:00:00 2001 From: Govindarajulu Varadarajan <_govind@gmx.com> Date: Thu, 6 Nov 2014 15:21:39 +0530 Subject: [PATCH 209/371] enic: update desc properly in rx_copybreak When we reuse the rx buffer, we need to update the desc. If not hardware sees stale value. In the following crash, when mtu is changed, hardware sees old rx buffer value and crashes on skb_put. Fix this by using enic_queue_rq_desc helper function which updates the necessary desc. [ 64.657376] skbuff: skb_over_panic: text:ffffffffa041f55d len:9010 put:9010 head:ffff8800d3ca9fc0 data:ffff8800d3caa000 tail:0x2372 end:0x640 dev:enp0s3 [ 64.659965] ------------[ cut here ]------------ [ 64.661322] kernel BUG at net/core/skbuff.c:100! [ 64.662644] invalid opcode: 0000 [#1] PREEMPT SMP [ 64.664001] Modules linked in: rpcsec_gss_krb5 auth_rpcgss oid_registry nfsv4 cirrus ttm drm_kms_helper drm enic psmouse microcode evdev serio_raw syscopyarea sysfillrect sysimgblt i2c_piix4 i2c_core pcspkr nfs lockd grace sunrpc fscache ext4 crc16 mbcache jbd2 sd_mod ata_generic virtio_balloon ata_piix libata uhci_hcd virtio_pci virtio_ring usbcore usb_common virtio scsi_mod [ 64.664834] CPU: 0 PID: 0 Comm: swapper/0 Tainted: G W 3.17.0-netnext-10335-g942396b-dirty #273 [ 64.664834] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 64.664834] task: ffffffff81a1d580 ti: ffffffff81a00000 task.ti: ffffffff81a00000 [ 64.664834] RIP: 0010:[] [] skb_panic+0x61/0x70 [ 64.664834] RSP: 0018:ffff880210603d48 EFLAGS: 00010292 [ 64.664834] RAX: 000000000000008c RBX: ffff88020b0f6930 RCX: 0000000000000000 [ 64.664834] RDX: 000000000000008c RSI: ffffffff8178b288 RDI: 00000000ffffffff [ 64.664834] RBP: ffff880210603d68 R08: 0000000000000001 R09: 0000000000000001 [ 64.664834] R10: 00000000000005ce R11: 0000000000000001 R12: ffff88020b1f0b40 [ 64.664834] R13: 000000000000a332 R14: ffff880209a1a000 R15: 0000000000000001 [ 64.664834] FS: 0000000000000000(0000) GS:ffff880210600000(0000) knlGS:0000000000000000 [ 64.664834] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b [ 64.664834] CR2: 00007f6752935e48 CR3: 0000000035743000 CR4: 00000000000006f0 [ 64.664834] Stack: [ 64.664834] ffff8800d3caa000 0000000000002372 0000000000000640 ffff88020b1f0000 [ 64.664834] ffff880210603d78 ffffffff81392d54 ffff880210603e08 ffffffffa041f55d [ 64.664834] 0000000000000296 ffffffff00000000 00008e7e00008e7e ffff880200002332 [ 64.664834] Call Trace: [ 64.664834] [ 64.664834] [ 64.664834] [] skb_put+0x54/0x60 [ 64.664834] [] enic_rq_service.constprop.47+0x3ad/0x730 [enic] [ 64.664834] [] enic_poll_msix_rq+0x199/0x370 [enic] [ 64.664834] [] net_rx_action+0x139/0x210 [ 64.664834] [] ? __this_cpu_preempt_check+0x13/0x20 [ 64.664834] [] __do_softirq+0x14e/0x280 [ 64.664834] [] irq_exit+0x8e/0xb0 [ 64.664834] [] do_IRQ+0x61/0x100 [ 64.664834] [] common_interrupt+0x72/0x72 fixes: a03bb56e67c357980dae886683733dab5583dc14 ("enic: implement rx_copybreak") Signed-off-by: Govindarajulu Varadarajan <_govind@gmx.com> Signed-off-by: David S. Miller --- drivers/net/ethernet/cisco/enic/enic_main.c | 14 ++------------ 1 file changed, 2 insertions(+), 12 deletions(-) diff --git a/drivers/net/ethernet/cisco/enic/enic_main.c b/drivers/net/ethernet/cisco/enic/enic_main.c index cd254d1ebd16..73cf1653a4a3 100644 --- a/drivers/net/ethernet/cisco/enic/enic_main.c +++ b/drivers/net/ethernet/cisco/enic/enic_main.c @@ -940,18 +940,8 @@ static int enic_rq_alloc_buf(struct vnic_rq *rq) struct vnic_rq_buf *buf = rq->to_use; if (buf->os_buf) { - buf = buf->next; - rq->to_use = buf; - rq->ring.desc_avail--; - if ((buf->index & VNIC_RQ_RETURN_RATE) == 0) { - /* Adding write memory barrier prevents compiler and/or - * CPU reordering, thus avoiding descriptor posting - * before descriptor is initialized. Otherwise, hardware - * can read stale descriptor fields. - */ - wmb(); - iowrite32(buf->index, &rq->ctrl->posted_index); - } + enic_queue_rq_desc(rq, buf->os_buf, os_buf_index, buf->dma_addr, + buf->len); return 0; } From 9d01412ae76fec5274a3d94a28a3552a742a60dc Mon Sep 17 00:00:00 2001 From: Manish Chopra Date: Thu, 6 Nov 2014 07:58:51 -0500 Subject: [PATCH 210/371] netxen: Fix link event handling. o Poll for the link events only if firmware doesn't have capability to notify the driver for the link events. Signed-off-by: Manish Chopra Signed-off-by: David S. Miller --- drivers/net/ethernet/qlogic/netxen/netxen_nic_main.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/net/ethernet/qlogic/netxen/netxen_nic_main.c b/drivers/net/ethernet/qlogic/netxen/netxen_nic_main.c index 0b2a1ccd276d..613037584d08 100644 --- a/drivers/net/ethernet/qlogic/netxen/netxen_nic_main.c +++ b/drivers/net/ethernet/qlogic/netxen/netxen_nic_main.c @@ -2762,7 +2762,8 @@ netxen_fw_poll_work(struct work_struct *work) if (test_bit(__NX_RESETTING, &adapter->state)) goto reschedule; - if (test_bit(__NX_DEV_UP, &adapter->state)) { + if (test_bit(__NX_DEV_UP, &adapter->state) && + !(adapter->capabilities & NX_FW_CAPABILITY_LINK_NOTIFICATION)) { if (!adapter->has_link_events) { netxen_nic_handle_phy_intr(adapter); From f0d7bfb9407fccb6499ec01c33afe43512a439a2 Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Wed, 5 Nov 2014 17:14:32 -0500 Subject: [PATCH 211/371] drm/radeon: add missing crtc unlock when setting up the MC Need to unlock the crtc after updating the blanking state. Signed-off-by: Alex Deucher Cc: stable@vger.kernel.org --- drivers/gpu/drm/radeon/evergreen.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/gpu/drm/radeon/evergreen.c b/drivers/gpu/drm/radeon/evergreen.c index d1e93ebce446..85995b4e3338 100644 --- a/drivers/gpu/drm/radeon/evergreen.c +++ b/drivers/gpu/drm/radeon/evergreen.c @@ -2555,6 +2555,7 @@ void evergreen_mc_stop(struct radeon_device *rdev, struct evergreen_mc_save *sav WREG32(EVERGREEN_CRTC_UPDATE_LOCK + crtc_offsets[i], 1); tmp |= EVERGREEN_CRTC_BLANK_DATA_EN; WREG32(EVERGREEN_CRTC_BLANK_CONTROL + crtc_offsets[i], tmp); + WREG32(EVERGREEN_CRTC_UPDATE_LOCK + crtc_offsets[i], 0); } } else { tmp = RREG32(EVERGREEN_CRTC_CONTROL + crtc_offsets[i]); From 842dfc11ea9a21f9825167c8a4f2834b205b0a79 Mon Sep 17 00:00:00 2001 From: Manuel Lauss Date: Fri, 7 Nov 2014 14:13:54 +0100 Subject: [PATCH 212/371] MIPS: Fix build with binutils 2.24.51+ Starting with version 2.24.51.20140728 MIPS binutils complain loudly about mixing soft-float and hard-float object files, leading to this build failure since GCC is invoked with "-msoft-float" on MIPS: {standard input}: Warning: .gnu_attribute 4,3 requires `softfloat' LD arch/mips/alchemy/common/built-in.o mipsel-softfloat-linux-gnu-ld: Warning: arch/mips/alchemy/common/built-in.o uses -msoft-float (set by arch/mips/alchemy/common/prom.o), arch/mips/alchemy/common/sleeper.o uses -mhard-float To fix this, we detect if GAS is new enough to support "-msoft-float" command option, and if it does, we can let GCC pass it to GAS; but then we also need to sprinkle the files which make use of floating point registers with the necessary ".set hardfloat" directives. Signed-off-by: Manuel Lauss Cc: Linux-MIPS Cc: Matthew Fortune Cc: Markos Chandras Cc: Maciej W. Rozycki Patchwork: https://patchwork.linux-mips.org/patch/8355/ Signed-off-by: Ralf Baechle --- arch/mips/Makefile | 9 +++++++++ arch/mips/include/asm/asmmacro-32.h | 6 ++++++ arch/mips/include/asm/asmmacro.h | 18 ++++++++++++++++++ arch/mips/include/asm/fpregdef.h | 14 ++++++++++++++ arch/mips/include/asm/fpu.h | 4 ++-- arch/mips/include/asm/mipsregs.h | 11 ++++++++++- arch/mips/kernel/branch.c | 8 ++------ arch/mips/kernel/genex.S | 1 + arch/mips/kernel/r2300_fpu.S | 6 ++++++ arch/mips/kernel/r2300_switch.S | 5 +++++ arch/mips/kernel/r4k_fpu.S | 27 +++++++++++++++++++++++++-- arch/mips/kernel/r4k_switch.S | 15 ++++++++++++++- arch/mips/kernel/r6000_fpu.S | 5 +++++ arch/mips/math-emu/cp1emu.c | 6 +----- 14 files changed, 118 insertions(+), 17 deletions(-) diff --git a/arch/mips/Makefile b/arch/mips/Makefile index 23cb94806fbc..58076472bdd8 100644 --- a/arch/mips/Makefile +++ b/arch/mips/Makefile @@ -93,6 +93,15 @@ LDFLAGS_vmlinux += -G 0 -static -n -nostdlib KBUILD_AFLAGS_MODULE += -mlong-calls KBUILD_CFLAGS_MODULE += -mlong-calls +# +# pass -msoft-float to GAS if it supports it. However on newer binutils +# (specifically newer than 2.24.51.20140728) we then also need to explicitly +# set ".set hardfloat" in all files which manipulate floating point registers. +# +ifneq ($(call as-option,-Wa$(comma)-msoft-float,),) + cflags-y += -DGAS_HAS_SET_HARDFLOAT -Wa,-msoft-float +endif + cflags-y += -ffreestanding # diff --git a/arch/mips/include/asm/asmmacro-32.h b/arch/mips/include/asm/asmmacro-32.h index e38c2811d4e2..cdac7b3eeaf7 100644 --- a/arch/mips/include/asm/asmmacro-32.h +++ b/arch/mips/include/asm/asmmacro-32.h @@ -13,6 +13,8 @@ #include .macro fpu_save_single thread tmp=t0 + .set push + SET_HARDFLOAT cfc1 \tmp, fcr31 swc1 $f0, THREAD_FPR0_LS64(\thread) swc1 $f1, THREAD_FPR1_LS64(\thread) @@ -47,9 +49,12 @@ swc1 $f30, THREAD_FPR30_LS64(\thread) swc1 $f31, THREAD_FPR31_LS64(\thread) sw \tmp, THREAD_FCR31(\thread) + .set pop .endm .macro fpu_restore_single thread tmp=t0 + .set push + SET_HARDFLOAT lw \tmp, THREAD_FCR31(\thread) lwc1 $f0, THREAD_FPR0_LS64(\thread) lwc1 $f1, THREAD_FPR1_LS64(\thread) @@ -84,6 +89,7 @@ lwc1 $f30, THREAD_FPR30_LS64(\thread) lwc1 $f31, THREAD_FPR31_LS64(\thread) ctc1 \tmp, fcr31 + .set pop .endm .macro cpu_save_nonscratch thread diff --git a/arch/mips/include/asm/asmmacro.h b/arch/mips/include/asm/asmmacro.h index cd9a98bc8f60..6caf8766b80f 100644 --- a/arch/mips/include/asm/asmmacro.h +++ b/arch/mips/include/asm/asmmacro.h @@ -57,6 +57,8 @@ #endif /* CONFIG_CPU_MIPSR2 */ .macro fpu_save_16even thread tmp=t0 + .set push + SET_HARDFLOAT cfc1 \tmp, fcr31 sdc1 $f0, THREAD_FPR0_LS64(\thread) sdc1 $f2, THREAD_FPR2_LS64(\thread) @@ -75,11 +77,13 @@ sdc1 $f28, THREAD_FPR28_LS64(\thread) sdc1 $f30, THREAD_FPR30_LS64(\thread) sw \tmp, THREAD_FCR31(\thread) + .set pop .endm .macro fpu_save_16odd thread .set push .set mips64r2 + SET_HARDFLOAT sdc1 $f1, THREAD_FPR1_LS64(\thread) sdc1 $f3, THREAD_FPR3_LS64(\thread) sdc1 $f5, THREAD_FPR5_LS64(\thread) @@ -110,6 +114,8 @@ .endm .macro fpu_restore_16even thread tmp=t0 + .set push + SET_HARDFLOAT lw \tmp, THREAD_FCR31(\thread) ldc1 $f0, THREAD_FPR0_LS64(\thread) ldc1 $f2, THREAD_FPR2_LS64(\thread) @@ -133,6 +139,7 @@ .macro fpu_restore_16odd thread .set push .set mips64r2 + SET_HARDFLOAT ldc1 $f1, THREAD_FPR1_LS64(\thread) ldc1 $f3, THREAD_FPR3_LS64(\thread) ldc1 $f5, THREAD_FPR5_LS64(\thread) @@ -277,6 +284,7 @@ .macro cfcmsa rd, cs .set push .set noat + SET_HARDFLOAT .insn .word CFC_MSA_INSN | (\cs << 11) move \rd, $1 @@ -286,6 +294,7 @@ .macro ctcmsa cd, rs .set push .set noat + SET_HARDFLOAT move $1, \rs .word CTC_MSA_INSN | (\cd << 6) .set pop @@ -294,6 +303,7 @@ .macro ld_d wd, off, base .set push .set noat + SET_HARDFLOAT add $1, \base, \off .word LDD_MSA_INSN | (\wd << 6) .set pop @@ -302,6 +312,7 @@ .macro st_d wd, off, base .set push .set noat + SET_HARDFLOAT add $1, \base, \off .word STD_MSA_INSN | (\wd << 6) .set pop @@ -310,6 +321,7 @@ .macro copy_u_w rd, ws, n .set push .set noat + SET_HARDFLOAT .insn .word COPY_UW_MSA_INSN | (\n << 16) | (\ws << 11) /* move triggers an assembler bug... */ @@ -320,6 +332,7 @@ .macro copy_u_d rd, ws, n .set push .set noat + SET_HARDFLOAT .insn .word COPY_UD_MSA_INSN | (\n << 16) | (\ws << 11) /* move triggers an assembler bug... */ @@ -330,6 +343,7 @@ .macro insert_w wd, n, rs .set push .set noat + SET_HARDFLOAT /* move triggers an assembler bug... */ or $1, \rs, zero .word INSERT_W_MSA_INSN | (\n << 16) | (\wd << 6) @@ -339,6 +353,7 @@ .macro insert_d wd, n, rs .set push .set noat + SET_HARDFLOAT /* move triggers an assembler bug... */ or $1, \rs, zero .word INSERT_D_MSA_INSN | (\n << 16) | (\wd << 6) @@ -381,6 +396,7 @@ st_d 31, THREAD_FPR31, \thread .set push .set noat + SET_HARDFLOAT cfcmsa $1, MSA_CSR sw $1, THREAD_MSA_CSR(\thread) .set pop @@ -389,6 +405,7 @@ .macro msa_restore_all thread .set push .set noat + SET_HARDFLOAT lw $1, THREAD_MSA_CSR(\thread) ctcmsa MSA_CSR, $1 .set pop @@ -441,6 +458,7 @@ .macro msa_init_all_upper .set push .set noat + SET_HARDFLOAT not $1, zero msa_init_upper 0 .set pop diff --git a/arch/mips/include/asm/fpregdef.h b/arch/mips/include/asm/fpregdef.h index 429481f9028d..f184ba088532 100644 --- a/arch/mips/include/asm/fpregdef.h +++ b/arch/mips/include/asm/fpregdef.h @@ -14,6 +14,20 @@ #include +/* + * starting with binutils 2.24.51.20140729, MIPS binutils warn about mixing + * hardfloat and softfloat object files. The kernel build uses soft-float by + * default, so we also need to pass -msoft-float along to GAS if it supports it. + * But this in turn causes assembler errors in files which access hardfloat + * registers. We detect if GAS supports "-msoft-float" in the Makefile and + * explicitly put ".set hardfloat" where floating point registers are touched. + */ +#ifdef GAS_HAS_SET_HARDFLOAT +#define SET_HARDFLOAT .set hardfloat +#else +#define SET_HARDFLOAT +#endif + #if _MIPS_SIM == _MIPS_SIM_ABI32 /* diff --git a/arch/mips/include/asm/fpu.h b/arch/mips/include/asm/fpu.h index 4d0aeda68397..dd562414cd5e 100644 --- a/arch/mips/include/asm/fpu.h +++ b/arch/mips/include/asm/fpu.h @@ -145,8 +145,8 @@ static inline void lose_fpu(int save) if (is_msa_enabled()) { if (save) { save_msa(current); - asm volatile("cfc1 %0, $31" - : "=r"(current->thread.fpu.fcr31)); + current->thread.fpu.fcr31 = + read_32bit_cp1_register(CP1_STATUS); } disable_msa(); clear_thread_flag(TIF_USEDMSA); diff --git a/arch/mips/include/asm/mipsregs.h b/arch/mips/include/asm/mipsregs.h index cf3b580c3df6..b46cd220a018 100644 --- a/arch/mips/include/asm/mipsregs.h +++ b/arch/mips/include/asm/mipsregs.h @@ -1324,7 +1324,7 @@ do { \ /* * Macros to access the floating point coprocessor control registers */ -#define read_32bit_cp1_register(source) \ +#define _read_32bit_cp1_register(source, gas_hardfloat) \ ({ \ int __res; \ \ @@ -1334,12 +1334,21 @@ do { \ " # gas fails to assemble cfc1 for some archs, \n" \ " # like Octeon. \n" \ " .set mips1 \n" \ + " "STR(gas_hardfloat)" \n" \ " cfc1 %0,"STR(source)" \n" \ " .set pop \n" \ : "=r" (__res)); \ __res; \ }) +#ifdef GAS_HAS_SET_HARDFLOAT +#define read_32bit_cp1_register(source) \ + _read_32bit_cp1_register(source, .set hardfloat) +#else +#define read_32bit_cp1_register(source) \ + _read_32bit_cp1_register(source, ) +#endif + #ifdef HAVE_AS_DSP #define rddsp(mask) \ ({ \ diff --git a/arch/mips/kernel/branch.c b/arch/mips/kernel/branch.c index 7b2df224f041..4d7d99d601cc 100644 --- a/arch/mips/kernel/branch.c +++ b/arch/mips/kernel/branch.c @@ -144,7 +144,7 @@ int __mm_isBranchInstr(struct pt_regs *regs, struct mm_decoded_insn dec_insn, case mm_bc1t_op: preempt_disable(); if (is_fpu_owner()) - asm volatile("cfc1\t%0,$31" : "=r" (fcr31)); + fcr31 = read_32bit_cp1_register(CP1_STATUS); else fcr31 = current->thread.fpu.fcr31; preempt_enable(); @@ -562,11 +562,7 @@ int __compute_return_epc_for_insn(struct pt_regs *regs, case cop1_op: preempt_disable(); if (is_fpu_owner()) - asm volatile( - ".set push\n" - "\t.set mips1\n" - "\tcfc1\t%0,$31\n" - "\t.set pop" : "=r" (fcr31)); + fcr31 = read_32bit_cp1_register(CP1_STATUS); else fcr31 = current->thread.fpu.fcr31; preempt_enable(); diff --git a/arch/mips/kernel/genex.S b/arch/mips/kernel/genex.S index ac35e12cb1f3..a5e26dd90592 100644 --- a/arch/mips/kernel/genex.S +++ b/arch/mips/kernel/genex.S @@ -358,6 +358,7 @@ NESTED(nmi_handler, PT_SIZE, sp) .set push /* gas fails to assemble cfc1 for some archs (octeon).*/ \ .set mips1 + SET_HARDFLOAT cfc1 a1, fcr31 li a2, ~(0x3f << 12) and a2, a1 diff --git a/arch/mips/kernel/r2300_fpu.S b/arch/mips/kernel/r2300_fpu.S index f31063dbdaeb..5ce3b746cedc 100644 --- a/arch/mips/kernel/r2300_fpu.S +++ b/arch/mips/kernel/r2300_fpu.S @@ -28,6 +28,8 @@ .set mips1 /* Save floating point context */ LEAF(_save_fp_context) + .set push + SET_HARDFLOAT li v0, 0 # assume success cfc1 t1,fcr31 EX(swc1 $f0,(SC_FPREGS+0)(a0)) @@ -65,6 +67,7 @@ LEAF(_save_fp_context) EX(sw t1,(SC_FPC_CSR)(a0)) cfc1 t0,$0 # implementation/version jr ra + .set pop .set nomacro EX(sw t0,(SC_FPC_EIR)(a0)) .set macro @@ -80,6 +83,8 @@ LEAF(_save_fp_context) * stack frame which might have been changed by the user. */ LEAF(_restore_fp_context) + .set push + SET_HARDFLOAT li v0, 0 # assume success EX(lw t0,(SC_FPC_CSR)(a0)) EX(lwc1 $f0,(SC_FPREGS+0)(a0)) @@ -116,6 +121,7 @@ LEAF(_restore_fp_context) EX(lwc1 $f31,(SC_FPREGS+248)(a0)) jr ra ctc1 t0,fcr31 + .set pop END(_restore_fp_context) .set reorder diff --git a/arch/mips/kernel/r2300_switch.S b/arch/mips/kernel/r2300_switch.S index 20b7b040e76f..435ea652f5fa 100644 --- a/arch/mips/kernel/r2300_switch.S +++ b/arch/mips/kernel/r2300_switch.S @@ -120,6 +120,9 @@ LEAF(_restore_fp) #define FPU_DEFAULT 0x00000000 + .set push + SET_HARDFLOAT + LEAF(_init_fpu) mfc0 t0, CP0_STATUS li t1, ST0_CU1 @@ -165,3 +168,5 @@ LEAF(_init_fpu) mtc1 t0, $f31 jr ra END(_init_fpu) + + .set pop diff --git a/arch/mips/kernel/r4k_fpu.S b/arch/mips/kernel/r4k_fpu.S index 8352523568e6..6c160c67984c 100644 --- a/arch/mips/kernel/r4k_fpu.S +++ b/arch/mips/kernel/r4k_fpu.S @@ -19,8 +19,12 @@ #include #include +/* preprocessor replaces the fp in ".set fp=64" with $30 otherwise */ +#undef fp + .macro EX insn, reg, src .set push + SET_HARDFLOAT .set nomacro .ex\@: \insn \reg, \src .set pop @@ -33,12 +37,17 @@ .set arch=r4000 LEAF(_save_fp_context) + .set push + SET_HARDFLOAT cfc1 t1, fcr31 + .set pop #if defined(CONFIG_64BIT) || defined(CONFIG_CPU_MIPS32_R2) .set push + SET_HARDFLOAT #ifdef CONFIG_CPU_MIPS32_R2 - .set mips64r2 + .set mips32r2 + .set fp=64 mfc0 t0, CP0_STATUS sll t0, t0, 5 bgez t0, 1f # skip storing odd if FR=0 @@ -64,6 +73,8 @@ LEAF(_save_fp_context) 1: .set pop #endif + .set push + SET_HARDFLOAT /* Store the 16 even double precision registers */ EX sdc1 $f0, SC_FPREGS+0(a0) EX sdc1 $f2, SC_FPREGS+16(a0) @@ -84,11 +95,14 @@ LEAF(_save_fp_context) EX sw t1, SC_FPC_CSR(a0) jr ra li v0, 0 # success + .set pop END(_save_fp_context) #ifdef CONFIG_MIPS32_COMPAT /* Save 32-bit process floating point context */ LEAF(_save_fp_context32) + .set push + SET_HARDFLOAT cfc1 t1, fcr31 mfc0 t0, CP0_STATUS @@ -134,6 +148,7 @@ LEAF(_save_fp_context32) EX sw t1, SC32_FPC_CSR(a0) cfc1 t0, $0 # implementation/version EX sw t0, SC32_FPC_EIR(a0) + .set pop jr ra li v0, 0 # success @@ -150,8 +165,10 @@ LEAF(_restore_fp_context) #if defined(CONFIG_64BIT) || defined(CONFIG_CPU_MIPS32_R2) .set push + SET_HARDFLOAT #ifdef CONFIG_CPU_MIPS32_R2 - .set mips64r2 + .set mips32r2 + .set fp=64 mfc0 t0, CP0_STATUS sll t0, t0, 5 bgez t0, 1f # skip loading odd if FR=0 @@ -175,6 +192,8 @@ LEAF(_restore_fp_context) EX ldc1 $f31, SC_FPREGS+248(a0) 1: .set pop #endif + .set push + SET_HARDFLOAT EX ldc1 $f0, SC_FPREGS+0(a0) EX ldc1 $f2, SC_FPREGS+16(a0) EX ldc1 $f4, SC_FPREGS+32(a0) @@ -192,6 +211,7 @@ LEAF(_restore_fp_context) EX ldc1 $f28, SC_FPREGS+224(a0) EX ldc1 $f30, SC_FPREGS+240(a0) ctc1 t1, fcr31 + .set pop jr ra li v0, 0 # success END(_restore_fp_context) @@ -199,6 +219,8 @@ LEAF(_restore_fp_context) #ifdef CONFIG_MIPS32_COMPAT LEAF(_restore_fp_context32) /* Restore an o32 sigcontext. */ + .set push + SET_HARDFLOAT EX lw t1, SC32_FPC_CSR(a0) mfc0 t0, CP0_STATUS @@ -242,6 +264,7 @@ LEAF(_restore_fp_context32) ctc1 t1, fcr31 jr ra li v0, 0 # success + .set pop END(_restore_fp_context32) #endif diff --git a/arch/mips/kernel/r4k_switch.S b/arch/mips/kernel/r4k_switch.S index 4c4ec1812420..64591e671878 100644 --- a/arch/mips/kernel/r4k_switch.S +++ b/arch/mips/kernel/r4k_switch.S @@ -22,6 +22,9 @@ #include +/* preprocessor replaces the fp in ".set fp=64" with $30 otherwise */ +#undef fp + /* * Offset to the current process status flags, the first 32 bytes of the * stack are not used. @@ -65,8 +68,12 @@ bgtz a3, 1f /* Save 128b MSA vector context + scalar FP control & status. */ + .set push + SET_HARDFLOAT cfc1 t1, fcr31 msa_save_all a0 + .set pop /* SET_HARDFLOAT */ + sw t1, THREAD_FCR31(a0) b 2f @@ -161,6 +168,9 @@ LEAF(_init_msa_upper) #define FPU_DEFAULT 0x00000000 + .set push + SET_HARDFLOAT + LEAF(_init_fpu) mfc0 t0, CP0_STATUS li t1, ST0_CU1 @@ -232,7 +242,8 @@ LEAF(_init_fpu) #ifdef CONFIG_CPU_MIPS32_R2 .set push - .set mips64r2 + .set mips32r2 + .set fp=64 sll t0, t0, 5 # is Status.FR set? bgez t0, 1f # no: skip setting upper 32b @@ -291,3 +302,5 @@ LEAF(_init_fpu) #endif jr ra END(_init_fpu) + + .set pop /* SET_HARDFLOAT */ diff --git a/arch/mips/kernel/r6000_fpu.S b/arch/mips/kernel/r6000_fpu.S index da0fbe46d83b..47077380c15c 100644 --- a/arch/mips/kernel/r6000_fpu.S +++ b/arch/mips/kernel/r6000_fpu.S @@ -18,6 +18,9 @@ .set noreorder .set mips2 + .set push + SET_HARDFLOAT + /* Save floating point context */ LEAF(_save_fp_context) mfc0 t0,CP0_STATUS @@ -85,3 +88,5 @@ 1: jr ra nop END(_restore_fp_context) + + .set pop /* SET_HARDFLOAT */ diff --git a/arch/mips/math-emu/cp1emu.c b/arch/mips/math-emu/cp1emu.c index 51a0fde4bec1..cac529a405b8 100644 --- a/arch/mips/math-emu/cp1emu.c +++ b/arch/mips/math-emu/cp1emu.c @@ -584,11 +584,7 @@ static int isBranchInstr(struct pt_regs *regs, struct mm_decoded_insn dec_insn, if (insn.i_format.rs == bc_op) { preempt_disable(); if (is_fpu_owner()) - asm volatile( - ".set push\n" - "\t.set mips1\n" - "\tcfc1\t%0,$31\n" - "\t.set pop" : "=r" (fcr31)); + fcr31 = read_32bit_cp1_register(CP1_STATUS); else fcr31 = current->thread.fpu.fcr31; preempt_enable(); From e4a60d139060975eb956717e4f63ae348d4d8cc5 Mon Sep 17 00:00:00 2001 From: Yijing Wang Date: Fri, 7 Nov 2014 12:05:49 +0800 Subject: [PATCH 213/371] sysfs: driver core: Fix glue dir race condition by gdp_mutex There is a race condition when removing glue directory. It can be reproduced in following test: path 1: Add first child device device_add() get_device_parent() /*find parent from glue_dirs.list*/ list_for_each_entry(k, &dev->class->p->glue_dirs.list, entry) if (k->parent == parent_kobj) { kobj = kobject_get(k); break; } .... class_dir_create_and_add() path2: Remove last child device under glue dir device_del() cleanup_device_parent() cleanup_glue_dir() kobject_put(glue_dir); If path2 has been called cleanup_glue_dir(), but not call kobject_put(glue_dir), the glue dir is still in parent's kset list. Meanwhile, path1 find the glue dir from the glue_dirs.list. Path2 may release glue dir before path1 call kobject_get(). So kernel will report the warning and bug_on. This is a "classic" problem we have of a kref in a list that can be found while the last instance could be removed at the same time. This patch reuse gdp_mutex to fix this race condition. The following calltrace is captured in kernel 3.4, but the latest kernel still has this bug. ----------------------------------------------------- <4>[ 3965.441471] WARNING: at ...include/linux/kref.h:41 kobject_get+0x33/0x40() <4>[ 3965.441474] Hardware name: Romley <4>[ 3965.441475] Modules linked in: isd_iop(O) isd_xda(O)... ... <4>[ 3965.441605] Call Trace: <4>[ 3965.441611] [] warn_slowpath_common+0x7a/0xb0 <4>[ 3965.441615] [] warn_slowpath_null+0x15/0x20 <4>[ 3965.441618] [] kobject_get+0x33/0x40 <4>[ 3965.441624] [] get_device_parent.isra.11+0x135/0x1f0 <4>[ 3965.441627] [] device_add+0xd4/0x6d0 <4>[ 3965.441631] [] ? dev_set_name+0x3c/0x40 .... <2>[ 3965.441912] kernel BUG at ..../fs/sysfs/group.c:65! <4>[ 3965.441915] invalid opcode: 0000 [#1] SMP ... <4>[ 3965.686743] [] sysfs_create_group+0xe/0x10 <4>[ 3965.686748] [] blk_trace_init_sysfs+0x14/0x20 <4>[ 3965.686753] [] blk_register_queue+0x3b/0x120 <4>[ 3965.686756] [] add_disk+0x1cc/0x490 .... ------------------------------------------------------- Signed-off-by: Yijing Wang Signed-off-by: Weng Meiling Cc: #3.4+ Signed-off-by: Greg Kroah-Hartman --- drivers/base/core.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/base/core.c b/drivers/base/core.c index 14d162952c3b..842d04707de6 100644 --- a/drivers/base/core.c +++ b/drivers/base/core.c @@ -724,12 +724,12 @@ class_dir_create_and_add(struct class *class, struct kobject *parent_kobj) return &dir->kobj; } +static DEFINE_MUTEX(gdp_mutex); static struct kobject *get_device_parent(struct device *dev, struct device *parent) { if (dev->class) { - static DEFINE_MUTEX(gdp_mutex); struct kobject *kobj = NULL; struct kobject *parent_kobj; struct kobject *k; @@ -793,7 +793,9 @@ static void cleanup_glue_dir(struct device *dev, struct kobject *glue_dir) glue_dir->kset != &dev->class->p->glue_dirs) return; + mutex_lock(&gdp_mutex); kobject_put(glue_dir); + mutex_unlock(&gdp_mutex); } static void cleanup_device_parent(struct device *dev) From 1910195423e7bea4c01c42bfe3f81792a6e969bb Mon Sep 17 00:00:00 2001 From: Mark Knibbs Date: Tue, 4 Nov 2014 13:00:15 +0000 Subject: [PATCH 214/371] USB: Update default usb-storage delay_use value in kernel-parameters.txt Back in 2010 the default usb-storage delay_use time was reduced from 5 to 1 second (commit a4a47bc03fe520e95e0c4212bf97c86545fb14f9), but kernel-parameters.txt wasn't updated to reflect that. Signed-off-by: Mark Knibbs Signed-off-by: Greg Kroah-Hartman --- Documentation/kernel-parameters.txt | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt index 4c81a860cc2b..479f33204a37 100644 --- a/Documentation/kernel-parameters.txt +++ b/Documentation/kernel-parameters.txt @@ -3621,7 +3621,7 @@ bytes respectively. Such letter suffixes can also be entirely omitted. usb-storage.delay_use= [UMS] The delay in seconds before a new device is - scanned for Logical Units (default 5). + scanned for Logical Units (default 1). usb-storage.quirks= [UMS] A list of quirks entries to supplement or From 1310b544e5708ab5e4de46e9c70f54b9fd8350b2 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Lothar=20Wa=C3=9Fmann?= Date: Fri, 7 Nov 2014 10:02:47 +0100 Subject: [PATCH 215/371] net: fec: fix regression on i.MX28 introduced by rx_copybreak support MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit commit 1b7bde6d659d ("net: fec: implement rx_copybreak to improve rx performance") introduced a regression for i.MX28. The swap_buffer() function doing the endian conversion of the received data on i.MX28 may access memory beyond the actual packet size in the DMA buffer. fec_enet_copybreak() does not copy those bytes, so that the last bytes of a packet may be filled with invalid data after swapping. This will likely lead to checksum errors on received packets. E.g. when trying to mount an NFS rootfs: UDP: bad checksum. From 192.168.1.225:111 to 192.168.100.73:44662 ulen 36 Do the byte swapping and copying to the new skb in one go if necessary. Signed-off-by: Lothar Waßmann Tested-by: Fabio Estevam Signed-off-by: David S. Miller --- drivers/net/ethernet/freescale/fec_main.c | 23 +++++++++++++++++++---- 1 file changed, 19 insertions(+), 4 deletions(-) diff --git a/drivers/net/ethernet/freescale/fec_main.c b/drivers/net/ethernet/freescale/fec_main.c index c27128de8dde..3dca494797bd 100644 --- a/drivers/net/ethernet/freescale/fec_main.c +++ b/drivers/net/ethernet/freescale/fec_main.c @@ -298,6 +298,16 @@ static void *swap_buffer(void *bufaddr, int len) return bufaddr; } +static void swap_buffer2(void *dst_buf, void *src_buf, int len) +{ + int i; + unsigned int *src = src_buf; + unsigned int *dst = dst_buf; + + for (i = 0; i < len; i += 4, src++, dst++) + *dst = swab32p(src); +} + static void fec_dump(struct net_device *ndev) { struct fec_enet_private *fep = netdev_priv(ndev); @@ -1307,7 +1317,7 @@ fec_enet_new_rxbdp(struct net_device *ndev, struct bufdesc *bdp, struct sk_buff } static bool fec_enet_copybreak(struct net_device *ndev, struct sk_buff **skb, - struct bufdesc *bdp, u32 length) + struct bufdesc *bdp, u32 length, bool swap) { struct fec_enet_private *fep = netdev_priv(ndev); struct sk_buff *new_skb; @@ -1322,7 +1332,10 @@ static bool fec_enet_copybreak(struct net_device *ndev, struct sk_buff **skb, dma_sync_single_for_cpu(&fep->pdev->dev, bdp->cbd_bufaddr, FEC_ENET_RX_FRSIZE - fep->rx_align, DMA_FROM_DEVICE); - memcpy(new_skb->data, (*skb)->data, length); + if (!swap) + memcpy(new_skb->data, (*skb)->data, length); + else + swap_buffer2(new_skb->data, (*skb)->data, length); *skb = new_skb; return true; @@ -1352,6 +1365,7 @@ fec_enet_rx_queue(struct net_device *ndev, int budget, u16 queue_id) u16 vlan_tag; int index = 0; bool is_copybreak; + bool need_swap = id_entry->driver_data & FEC_QUIRK_SWAP_FRAME; #ifdef CONFIG_M532x flush_cache_all(); @@ -1415,7 +1429,8 @@ fec_enet_rx_queue(struct net_device *ndev, int budget, u16 queue_id) * include that when passing upstream as it messes up * bridging applications. */ - is_copybreak = fec_enet_copybreak(ndev, &skb, bdp, pkt_len - 4); + is_copybreak = fec_enet_copybreak(ndev, &skb, bdp, pkt_len - 4, + need_swap); if (!is_copybreak) { skb_new = netdev_alloc_skb(ndev, FEC_ENET_RX_FRSIZE); if (unlikely(!skb_new)) { @@ -1430,7 +1445,7 @@ fec_enet_rx_queue(struct net_device *ndev, int budget, u16 queue_id) prefetch(skb->data - NET_IP_ALIGN); skb_put(skb, pkt_len - 4); data = skb->data; - if (id_entry->driver_data & FEC_QUIRK_SWAP_FRAME) + if (!is_copybreak && need_swap) swap_buffer(data, pkt_len); /* Extract the enhanced buffer descriptor */ From ca1f8da9ac5ce6e63d8f6933f83fabc1f3f961f4 Mon Sep 17 00:00:00 2001 From: Wolfram Sang Date: Tue, 4 Nov 2014 23:46:27 +0100 Subject: [PATCH 216/371] i2c: remove FSF address We have a central copy of the GPL for that. Some addresses were already outdated. Signed-off-by: Wolfram Sang --- drivers/i2c/algos/i2c-algo-bit.c | 5 ----- drivers/i2c/algos/i2c-algo-pca.c | 5 ----- drivers/i2c/algos/i2c-algo-pcf.c | 5 ----- drivers/i2c/algos/i2c-algo-pcf.h | 7 +------ drivers/i2c/busses/i2c-ali1535.c | 4 ---- drivers/i2c/busses/i2c-ali15x3.c | 4 ---- drivers/i2c/busses/i2c-amd756-s4882.c | 4 ---- drivers/i2c/busses/i2c-amd756.c | 4 ---- drivers/i2c/busses/i2c-au1550.c | 4 ---- drivers/i2c/busses/i2c-cpm.c | 4 ---- drivers/i2c/busses/i2c-davinci.c | 4 ---- drivers/i2c/busses/i2c-designware-core.c | 4 ---- drivers/i2c/busses/i2c-designware-core.h | 4 ---- drivers/i2c/busses/i2c-designware-pcidrv.c | 4 ---- drivers/i2c/busses/i2c-designware-platdrv.c | 4 ---- drivers/i2c/busses/i2c-eg20t.c | 4 ---- drivers/i2c/busses/i2c-elektor.c | 6 +----- drivers/i2c/busses/i2c-hydra.c | 4 ---- drivers/i2c/busses/i2c-i801.c | 4 ---- drivers/i2c/busses/i2c-imx.c | 5 ----- drivers/i2c/busses/i2c-iop3xx.h | 6 +----- drivers/i2c/busses/i2c-isch.c | 4 ---- drivers/i2c/busses/i2c-ismt.c | 4 ---- drivers/i2c/busses/i2c-nforce2-s4985.c | 4 ---- drivers/i2c/busses/i2c-nforce2.c | 4 ---- drivers/i2c/busses/i2c-omap.c | 4 ---- drivers/i2c/busses/i2c-parport-light.c | 4 ---- drivers/i2c/busses/i2c-parport.c | 4 ---- drivers/i2c/busses/i2c-parport.h | 4 ---- drivers/i2c/busses/i2c-pasemi.c | 4 ---- drivers/i2c/busses/i2c-pca-isa.c | 4 ---- drivers/i2c/busses/i2c-piix4.c | 4 ---- drivers/i2c/busses/i2c-pmcmsp.c | 4 ---- drivers/i2c/busses/i2c-powermac.c | 4 ---- drivers/i2c/busses/i2c-s3c2410.c | 4 ---- drivers/i2c/busses/i2c-sh_mobile.c | 4 ---- drivers/i2c/busses/i2c-sibyte.c | 4 ---- drivers/i2c/busses/i2c-simtec.c | 4 ---- drivers/i2c/busses/i2c-sis5595.c | 4 ---- drivers/i2c/busses/i2c-sis630.c | 4 ---- drivers/i2c/busses/i2c-sis96x.c | 4 ---- drivers/i2c/busses/i2c-taos-evm.c | 4 ---- drivers/i2c/busses/i2c-via.c | 4 ---- drivers/i2c/busses/i2c-viapro.c | 4 ---- drivers/i2c/busses/i2c-xiic.c | 4 ---- drivers/i2c/busses/scx200_acb.c | 4 ---- drivers/i2c/i2c-boardinfo.c | 5 ----- drivers/i2c/i2c-core.c | 7 +------ drivers/i2c/i2c-core.h | 5 ----- drivers/i2c/i2c-dev.c | 5 ----- drivers/i2c/i2c-smbus.c | 5 ----- drivers/i2c/i2c-stub.c | 4 ---- 52 files changed, 4 insertions(+), 222 deletions(-) diff --git a/drivers/i2c/algos/i2c-algo-bit.c b/drivers/i2c/algos/i2c-algo-bit.c index 65ef9664d5da..899bede81b31 100644 --- a/drivers/i2c/algos/i2c-algo-bit.c +++ b/drivers/i2c/algos/i2c-algo-bit.c @@ -12,11 +12,6 @@ but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program; if not, write to the Free Software - Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, - MA 02110-1301 USA. * ------------------------------------------------------------------------- */ /* With some changes from Frodo Looijaard , Kyösti Mälkki diff --git a/drivers/i2c/algos/i2c-algo-pca.c b/drivers/i2c/algos/i2c-algo-pca.c index 8b10f88b13d9..580dbf05c148 100644 --- a/drivers/i2c/algos/i2c-algo-pca.c +++ b/drivers/i2c/algos/i2c-algo-pca.c @@ -12,11 +12,6 @@ * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, - * MA 02110-1301 USA. */ #include diff --git a/drivers/i2c/algos/i2c-algo-pcf.c b/drivers/i2c/algos/i2c-algo-pcf.c index 34370090b753..270d84bfc2c6 100644 --- a/drivers/i2c/algos/i2c-algo-pcf.c +++ b/drivers/i2c/algos/i2c-algo-pcf.c @@ -14,11 +14,6 @@ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, - * MA 02110-1301 USA. - * * With some changes from Kyösti Mälkki and * Frodo Looijaard , and also from Martin Bailey * diff --git a/drivers/i2c/algos/i2c-algo-pcf.h b/drivers/i2c/algos/i2c-algo-pcf.h index 1ec703ee788d..262ee801975b 100644 --- a/drivers/i2c/algos/i2c-algo-pcf.h +++ b/drivers/i2c/algos/i2c-algo-pcf.h @@ -12,12 +12,7 @@ This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program; if not, write to the Free Software - Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, - MA 02110-1301 USA. */ + GNU General Public License for more details. */ /* -------------------------------------------------------------------- */ /* With some changes from Frodo Looijaard */ diff --git a/drivers/i2c/busses/i2c-ali1535.c b/drivers/i2c/busses/i2c-ali1535.c index 451e305f7971..4f2d78868281 100644 --- a/drivers/i2c/busses/i2c-ali1535.c +++ b/drivers/i2c/busses/i2c-ali1535.c @@ -14,10 +14,6 @@ * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ /* diff --git a/drivers/i2c/busses/i2c-ali15x3.c b/drivers/i2c/busses/i2c-ali15x3.c index 2fa21ce9682b..45c5c4883022 100644 --- a/drivers/i2c/busses/i2c-ali15x3.c +++ b/drivers/i2c/busses/i2c-ali15x3.c @@ -12,10 +12,6 @@ but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program; if not, write to the Free Software - Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ /* diff --git a/drivers/i2c/busses/i2c-amd756-s4882.c b/drivers/i2c/busses/i2c-amd756-s4882.c index 41fc6837fb8b..65e324054970 100644 --- a/drivers/i2c/busses/i2c-amd756-s4882.c +++ b/drivers/i2c/busses/i2c-amd756-s4882.c @@ -12,10 +12,6 @@ * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ /* diff --git a/drivers/i2c/busses/i2c-amd756.c b/drivers/i2c/busses/i2c-amd756.c index a16f72891358..6c7113d990f8 100644 --- a/drivers/i2c/busses/i2c-amd756.c +++ b/drivers/i2c/busses/i2c-amd756.c @@ -15,10 +15,6 @@ but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program; if not, write to the Free Software - Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ /* diff --git a/drivers/i2c/busses/i2c-au1550.c b/drivers/i2c/busses/i2c-au1550.c index 8762458ca7da..6f8c0756e350 100644 --- a/drivers/i2c/busses/i2c-au1550.c +++ b/drivers/i2c/busses/i2c-au1550.c @@ -21,10 +21,6 @@ * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ #include diff --git a/drivers/i2c/busses/i2c-cpm.c b/drivers/i2c/busses/i2c-cpm.c index f3b89a4698b6..5bdbc71698d0 100644 --- a/drivers/i2c/busses/i2c-cpm.c +++ b/drivers/i2c/busses/i2c-cpm.c @@ -23,10 +23,6 @@ * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ #include diff --git a/drivers/i2c/busses/i2c-davinci.c b/drivers/i2c/busses/i2c-davinci.c index 4d9614719128..d15b7c9b9219 100644 --- a/drivers/i2c/busses/i2c-davinci.c +++ b/drivers/i2c/busses/i2c-davinci.c @@ -17,10 +17,6 @@ * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. * ---------------------------------------------------------------------------- * */ diff --git a/drivers/i2c/busses/i2c-designware-core.c b/drivers/i2c/busses/i2c-designware-core.c index 3c20e4bd6dd1..edca99dbba23 100644 --- a/drivers/i2c/busses/i2c-designware-core.c +++ b/drivers/i2c/busses/i2c-designware-core.c @@ -18,10 +18,6 @@ * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. * ---------------------------------------------------------------------------- * */ diff --git a/drivers/i2c/busses/i2c-designware-core.h b/drivers/i2c/busses/i2c-designware-core.h index d66b6cbc9edc..5a410ef17abd 100644 --- a/drivers/i2c/busses/i2c-designware-core.h +++ b/drivers/i2c/busses/i2c-designware-core.h @@ -18,10 +18,6 @@ * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. * ---------------------------------------------------------------------------- * */ diff --git a/drivers/i2c/busses/i2c-designware-pcidrv.c b/drivers/i2c/busses/i2c-designware-pcidrv.c index d31d313ab4f7..acb40f95db78 100644 --- a/drivers/i2c/busses/i2c-designware-pcidrv.c +++ b/drivers/i2c/busses/i2c-designware-pcidrv.c @@ -19,10 +19,6 @@ * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. * ---------------------------------------------------------------------------- * */ diff --git a/drivers/i2c/busses/i2c-designware-platdrv.c b/drivers/i2c/busses/i2c-designware-platdrv.c index a7431150acf7..373dd4d47765 100644 --- a/drivers/i2c/busses/i2c-designware-platdrv.c +++ b/drivers/i2c/busses/i2c-designware-platdrv.c @@ -18,10 +18,6 @@ * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. * ---------------------------------------------------------------------------- * */ diff --git a/drivers/i2c/busses/i2c-eg20t.c b/drivers/i2c/busses/i2c-eg20t.c index a44ea13d1434..76e699f9ed97 100644 --- a/drivers/i2c/busses/i2c-eg20t.c +++ b/drivers/i2c/busses/i2c-eg20t.c @@ -9,10 +9,6 @@ * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA. */ #include diff --git a/drivers/i2c/busses/i2c-elektor.c b/drivers/i2c/busses/i2c-elektor.c index 485497066ed7..92e8c0ce1625 100644 --- a/drivers/i2c/busses/i2c-elektor.c +++ b/drivers/i2c/busses/i2c-elektor.c @@ -12,11 +12,7 @@ This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program; if not, write to the Free Software - Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ + GNU General Public License for more details. */ /* ------------------------------------------------------------------------- */ /* With some changes from Kyösti Mälkki and even diff --git a/drivers/i2c/busses/i2c-hydra.c b/drivers/i2c/busses/i2c-hydra.c index 14d2b76de25f..b7864cf42a72 100644 --- a/drivers/i2c/busses/i2c-hydra.c +++ b/drivers/i2c/busses/i2c-hydra.c @@ -15,10 +15,6 @@ but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program; if not, write to the Free Software - Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ #include diff --git a/drivers/i2c/busses/i2c-i801.c b/drivers/i2c/busses/i2c-i801.c index 7cfc183b3d63..6ab4f1cb21f3 100644 --- a/drivers/i2c/busses/i2c-i801.c +++ b/drivers/i2c/busses/i2c-i801.c @@ -15,10 +15,6 @@ but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program; if not, write to the Free Software - Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ /* diff --git a/drivers/i2c/busses/i2c-imx.c b/drivers/i2c/busses/i2c-imx.c index c48e46af670a..e9fb7cf78612 100644 --- a/drivers/i2c/busses/i2c-imx.c +++ b/drivers/i2c/busses/i2c-imx.c @@ -11,11 +11,6 @@ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, - * USA. - * * Author: * Darius Augulis, Teltonika Inc. * diff --git a/drivers/i2c/busses/i2c-iop3xx.h b/drivers/i2c/busses/i2c-iop3xx.h index 097e270955d0..2d6929c2bd92 100644 --- a/drivers/i2c/busses/i2c-iop3xx.h +++ b/drivers/i2c/busses/i2c-iop3xx.h @@ -11,11 +11,7 @@ This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program; if not, write to the Free Software - Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ + GNU General Public License for more details. */ /* ------------------------------------------------------------------------- */ diff --git a/drivers/i2c/busses/i2c-isch.c b/drivers/i2c/busses/i2c-isch.c index cf99dbf21fd1..113293d275f6 100644 --- a/drivers/i2c/busses/i2c-isch.c +++ b/drivers/i2c/busses/i2c-isch.c @@ -14,10 +14,6 @@ but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program; if not, write to the Free Software - Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ /* diff --git a/drivers/i2c/busses/i2c-ismt.c b/drivers/i2c/busses/i2c-ismt.c index 3f6ecbfb9a56..f2b0ff011631 100644 --- a/drivers/i2c/busses/i2c-ismt.c +++ b/drivers/i2c/busses/i2c-ismt.c @@ -14,10 +14,6 @@ * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. * The full GNU General Public License is included in this distribution * in the file called LICENSE.GPL. * diff --git a/drivers/i2c/busses/i2c-nforce2-s4985.c b/drivers/i2c/busses/i2c-nforce2-s4985.c index b170bdffb5de..88eda09e73c0 100644 --- a/drivers/i2c/busses/i2c-nforce2-s4985.c +++ b/drivers/i2c/busses/i2c-nforce2-s4985.c @@ -12,10 +12,6 @@ * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ /* diff --git a/drivers/i2c/busses/i2c-nforce2.c b/drivers/i2c/busses/i2c-nforce2.c index ee3a76c7ae97..70b3c9158509 100644 --- a/drivers/i2c/busses/i2c-nforce2.c +++ b/drivers/i2c/busses/i2c-nforce2.c @@ -17,10 +17,6 @@ but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program; if not, write to the Free Software - Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ /* diff --git a/drivers/i2c/busses/i2c-omap.c b/drivers/i2c/busses/i2c-omap.c index 0dffb0e62c3b..26942c159de1 100644 --- a/drivers/i2c/busses/i2c-omap.c +++ b/drivers/i2c/busses/i2c-omap.c @@ -22,10 +22,6 @@ * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ #include diff --git a/drivers/i2c/busses/i2c-parport-light.c b/drivers/i2c/busses/i2c-parport-light.c index 62f55fe624cb..d1f625f923c7 100644 --- a/drivers/i2c/busses/i2c-parport-light.c +++ b/drivers/i2c/busses/i2c-parport-light.c @@ -18,10 +18,6 @@ but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program; if not, write to the Free Software - Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. * ------------------------------------------------------------------------ */ #include diff --git a/drivers/i2c/busses/i2c-parport.c b/drivers/i2c/busses/i2c-parport.c index a27aae2d6757..a1fac5aa9bae 100644 --- a/drivers/i2c/busses/i2c-parport.c +++ b/drivers/i2c/busses/i2c-parport.c @@ -18,10 +18,6 @@ but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program; if not, write to the Free Software - Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. * ------------------------------------------------------------------------ */ #include diff --git a/drivers/i2c/busses/i2c-parport.h b/drivers/i2c/busses/i2c-parport.h index e572f3aac0f7..4e1294536805 100644 --- a/drivers/i2c/busses/i2c-parport.h +++ b/drivers/i2c/busses/i2c-parport.h @@ -12,10 +12,6 @@ but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program; if not, write to the Free Software - Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. * ------------------------------------------------------------------------ */ #define PORT_DATA 0 diff --git a/drivers/i2c/busses/i2c-pasemi.c b/drivers/i2c/busses/i2c-pasemi.c index 7a9dce43e115..df1dbc92a024 100644 --- a/drivers/i2c/busses/i2c-pasemi.c +++ b/drivers/i2c/busses/i2c-pasemi.c @@ -11,10 +11,6 @@ * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ #include diff --git a/drivers/i2c/busses/i2c-pca-isa.c b/drivers/i2c/busses/i2c-pca-isa.c index 323f061a3163..e0eb4ca0102e 100644 --- a/drivers/i2c/busses/i2c-pca-isa.c +++ b/drivers/i2c/busses/i2c-pca-isa.c @@ -12,10 +12,6 @@ * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ #include diff --git a/drivers/i2c/busses/i2c-piix4.c b/drivers/i2c/busses/i2c-piix4.c index a6f54ba27e2a..67cbec6796a0 100644 --- a/drivers/i2c/busses/i2c-piix4.c +++ b/drivers/i2c/busses/i2c-piix4.c @@ -11,10 +11,6 @@ but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program; if not, write to the Free Software - Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ /* diff --git a/drivers/i2c/busses/i2c-pmcmsp.c b/drivers/i2c/busses/i2c-pmcmsp.c index 8564768fee32..177834e2d841 100644 --- a/drivers/i2c/busses/i2c-pmcmsp.c +++ b/drivers/i2c/busses/i2c-pmcmsp.c @@ -18,10 +18,6 @@ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write to the Free Software Foundation, Inc., - * 675 Mass Ave, Cambridge, MA 02139, USA. */ #include diff --git a/drivers/i2c/busses/i2c-powermac.c b/drivers/i2c/busses/i2c-powermac.c index 01e967763c2a..60a53c169ed2 100644 --- a/drivers/i2c/busses/i2c-powermac.c +++ b/drivers/i2c/busses/i2c-powermac.c @@ -14,10 +14,6 @@ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. - You should have received a copy of the GNU General Public License - along with this program; if not, write to the Free Software - Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - */ #include diff --git a/drivers/i2c/busses/i2c-s3c2410.c b/drivers/i2c/busses/i2c-s3c2410.c index e3b0337faeb7..65244774bfa3 100644 --- a/drivers/i2c/busses/i2c-s3c2410.c +++ b/drivers/i2c/busses/i2c-s3c2410.c @@ -14,10 +14,6 @@ * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ #include diff --git a/drivers/i2c/busses/i2c-sh_mobile.c b/drivers/i2c/busses/i2c-sh_mobile.c index 8b5e79cb4468..4855188747c9 100644 --- a/drivers/i2c/busses/i2c-sh_mobile.c +++ b/drivers/i2c/busses/i2c-sh_mobile.c @@ -14,10 +14,6 @@ * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ #include diff --git a/drivers/i2c/busses/i2c-sibyte.c b/drivers/i2c/busses/i2c-sibyte.c index 0fe505d7abe9..2b6219d86b0f 100644 --- a/drivers/i2c/busses/i2c-sibyte.c +++ b/drivers/i2c/busses/i2c-sibyte.c @@ -12,10 +12,6 @@ * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ #include diff --git a/drivers/i2c/busses/i2c-simtec.c b/drivers/i2c/busses/i2c-simtec.c index 964e5c6f84ab..15ac8395dcd3 100644 --- a/drivers/i2c/busses/i2c-simtec.c +++ b/drivers/i2c/busses/i2c-simtec.c @@ -12,10 +12,6 @@ * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ #include diff --git a/drivers/i2c/busses/i2c-sis5595.c b/drivers/i2c/busses/i2c-sis5595.c index ac9bc33acef4..7d58a40faf2d 100644 --- a/drivers/i2c/busses/i2c-sis5595.c +++ b/drivers/i2c/busses/i2c-sis5595.c @@ -11,10 +11,6 @@ but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program; if not, write to the Free Software - Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ /* Note: we assume there can only be one SIS5595 with one SMBus interface */ diff --git a/drivers/i2c/busses/i2c-sis630.c b/drivers/i2c/busses/i2c-sis630.c index c6366733008d..1e6805b5cef2 100644 --- a/drivers/i2c/busses/i2c-sis630.c +++ b/drivers/i2c/busses/i2c-sis630.c @@ -10,10 +10,6 @@ but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program; if not, write to the Free Software - Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ /* diff --git a/drivers/i2c/busses/i2c-sis96x.c b/drivers/i2c/busses/i2c-sis96x.c index 8dc2fc5f74ff..44b904426073 100644 --- a/drivers/i2c/busses/i2c-sis96x.c +++ b/drivers/i2c/busses/i2c-sis96x.c @@ -10,10 +10,6 @@ but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program; if not, write to the Free Software - Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ /* diff --git a/drivers/i2c/busses/i2c-taos-evm.c b/drivers/i2c/busses/i2c-taos-evm.c index 10855a0b7e7f..4c7fc2d47014 100644 --- a/drivers/i2c/busses/i2c-taos-evm.c +++ b/drivers/i2c/busses/i2c-taos-evm.c @@ -13,10 +13,6 @@ * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ #include diff --git a/drivers/i2c/busses/i2c-via.c b/drivers/i2c/busses/i2c-via.c index f4a1ed757612..59b1d233ca7b 100644 --- a/drivers/i2c/busses/i2c-via.c +++ b/drivers/i2c/busses/i2c-via.c @@ -12,10 +12,6 @@ but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program; if not, write to the Free Software - Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ #include diff --git a/drivers/i2c/busses/i2c-viapro.c b/drivers/i2c/busses/i2c-viapro.c index 6841200b6e50..0ee2646f3b00 100644 --- a/drivers/i2c/busses/i2c-viapro.c +++ b/drivers/i2c/busses/i2c-viapro.c @@ -13,10 +13,6 @@ but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program; if not, write to the Free Software - Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ /* diff --git a/drivers/i2c/busses/i2c-xiic.c b/drivers/i2c/busses/i2c-xiic.c index ade9223912d3..cc65ea0b818f 100644 --- a/drivers/i2c/busses/i2c-xiic.c +++ b/drivers/i2c/busses/i2c-xiic.c @@ -12,10 +12,6 @@ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - * * * This code was implemented by Mocean Laboratories AB when porting linux * to the automotive development board Russellville. The copyright holder diff --git a/drivers/i2c/busses/scx200_acb.c b/drivers/i2c/busses/scx200_acb.c index ff3f5747e43b..5153354b1a6b 100644 --- a/drivers/i2c/busses/scx200_acb.c +++ b/drivers/i2c/busses/scx200_acb.c @@ -17,10 +17,6 @@ but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program; if not, write to the Free Software - Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt diff --git a/drivers/i2c/i2c-boardinfo.c b/drivers/i2c/i2c-boardinfo.c index f24cc64e2e8c..90e322959303 100644 --- a/drivers/i2c/i2c-boardinfo.c +++ b/drivers/i2c/i2c-boardinfo.c @@ -10,11 +10,6 @@ * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, - * MA 02110-1301 USA. */ #include diff --git a/drivers/i2c/i2c-core.c b/drivers/i2c/i2c-core.c index 2f90ac6a7f79..17a1853c6c2f 100644 --- a/drivers/i2c/i2c-core.c +++ b/drivers/i2c/i2c-core.c @@ -10,12 +10,7 @@ This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program; if not, write to the Free Software - Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, - MA 02110-1301 USA. */ + GNU General Public License for more details. */ /* ------------------------------------------------------------------------- */ /* With some changes from Kyösti Mälkki . diff --git a/drivers/i2c/i2c-core.h b/drivers/i2c/i2c-core.h index 18a8fd21d2c2..17700bfddcf5 100644 --- a/drivers/i2c/i2c-core.h +++ b/drivers/i2c/i2c-core.h @@ -10,11 +10,6 @@ * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, - * MA 02110-1301 USA. */ #include diff --git a/drivers/i2c/i2c-dev.c b/drivers/i2c/i2c-dev.c index 80b47e8ce030..71c7a3975b62 100644 --- a/drivers/i2c/i2c-dev.c +++ b/drivers/i2c/i2c-dev.c @@ -14,11 +14,6 @@ but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program; if not, write to the Free Software - Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, - MA 02110-1301 USA. */ /* Note that this is a complete rewrite of Simon Vogl's i2c-dev module. diff --git a/drivers/i2c/i2c-smbus.c b/drivers/i2c/i2c-smbus.c index fc99f0d6b4a5..9ebf9cb4ad7a 100644 --- a/drivers/i2c/i2c-smbus.c +++ b/drivers/i2c/i2c-smbus.c @@ -13,11 +13,6 @@ * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, - * MA 02110-1301 USA. */ #include diff --git a/drivers/i2c/i2c-stub.c b/drivers/i2c/i2c-stub.c index d241aa295d96..af2a94e1140b 100644 --- a/drivers/i2c/i2c-stub.c +++ b/drivers/i2c/i2c-stub.c @@ -13,10 +13,6 @@ but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program; if not, write to the Free Software - Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ #define DEBUG 1 From ab5c780913bca0a5763ca05dd5c2cb5cb08ccb26 Mon Sep 17 00:00:00 2001 From: "David S. Miller" Date: Fri, 7 Nov 2014 09:50:48 -0800 Subject: [PATCH 217/371] sparc64: Do irq_{enter,exit}() around generic_smp_call_function*(). Otherwise rcu_irq_{enter,exit}() do not happen and we get dumps like: ==================== [ 188.275021] =============================== [ 188.309351] [ INFO: suspicious RCU usage. ] [ 188.343737] 3.18.0-rc3-00068-g20f3963-dirty #54 Not tainted [ 188.394786] ------------------------------- [ 188.429170] include/linux/rcupdate.h:883 rcu_read_lock() used illegally while idle! [ 188.505235] other info that might help us debug this: [ 188.554230] RCU used illegally from idle CPU! rcu_scheduler_active = 1, debug_locks = 0 [ 188.637587] RCU used illegally from extended quiescent state! [ 188.690684] 3 locks held by swapper/7/0: [ 188.721932] #0: (&x->wait#11){......}, at: [<0000000000495de8>] complete+0x8/0x60 [ 188.797994] #1: (&p->pi_lock){-.-.-.}, at: [<000000000048510c>] try_to_wake_up+0xc/0x400 [ 188.881343] #2: (rcu_read_lock){......}, at: [<000000000048a910>] select_task_rq_fair+0x90/0xb40 [ 188.973043]stack backtrace: [ 188.993879] CPU: 7 PID: 0 Comm: swapper/7 Not tainted 3.18.0-rc3-00068-g20f3963-dirty #54 [ 189.076187] Call Trace: [ 189.089719] [0000000000499360] lockdep_rcu_suspicious+0xe0/0x100 [ 189.147035] [000000000048a99c] select_task_rq_fair+0x11c/0xb40 [ 189.202253] [00000000004852d8] try_to_wake_up+0x1d8/0x400 [ 189.252258] [000000000048554c] default_wake_function+0xc/0x20 [ 189.306435] [0000000000495554] __wake_up_common+0x34/0x80 [ 189.356448] [00000000004955b4] __wake_up_locked+0x14/0x40 [ 189.406456] [0000000000495e08] complete+0x28/0x60 [ 189.448142] [0000000000636e28] blk_end_sync_rq+0x8/0x20 [ 189.496057] [0000000000639898] __blk_mq_end_request+0x18/0x60 [ 189.550249] [00000000006ee014] scsi_end_request+0x94/0x180 [ 189.601286] [00000000006ee334] scsi_io_completion+0x1d4/0x600 [ 189.655463] [00000000006e51c4] scsi_finish_command+0xc4/0xe0 [ 189.708598] [00000000006ed958] scsi_softirq_done+0x118/0x140 [ 189.761735] [00000000006398ec] __blk_mq_complete_request_remote+0xc/0x20 [ 189.827383] [00000000004c75d0] generic_smp_call_function_single_interrupt+0x150/0x1c0 [ 189.906581] [000000000043e514] smp_call_function_single_client+0x14/0x40 ==================== Based almost entirely upon a patch by Paul E. McKenney. Reported-by: Meelis Roos Tested-by: Meelis Roos Signed-off-by: David S. Miller --- arch/sparc/kernel/smp_64.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/arch/sparc/kernel/smp_64.c b/arch/sparc/kernel/smp_64.c index 302c476413d5..da6f1a7fc4db 100644 --- a/arch/sparc/kernel/smp_64.c +++ b/arch/sparc/kernel/smp_64.c @@ -816,13 +816,17 @@ void arch_send_call_function_single_ipi(int cpu) void __irq_entry smp_call_function_client(int irq, struct pt_regs *regs) { clear_softint(1 << irq); + irq_enter(); generic_smp_call_function_interrupt(); + irq_exit(); } void __irq_entry smp_call_function_single_client(int irq, struct pt_regs *regs) { clear_softint(1 << irq); + irq_enter(); generic_smp_call_function_single_interrupt(); + irq_exit(); } static void tsb_sync(void *info) From 11cfbfb098b22d3e57f1f2be217cad20e2d48463 Mon Sep 17 00:00:00 2001 From: Wolfram Sang Date: Mon, 3 Nov 2014 21:16:16 +0100 Subject: [PATCH 218/371] i2c: at91: don't account as iowait iowait is for blkio [1]. I2C shouldn't use it. [1] https://lkml.org/lkml/2014/11/3/317 Signed-off-by: Wolfram Sang Acked-by: Ludovic Desroches Cc: stable@kernel.org --- drivers/i2c/busses/i2c-at91.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/i2c/busses/i2c-at91.c b/drivers/i2c/busses/i2c-at91.c index 917d54588d95..e05a672db3e5 100644 --- a/drivers/i2c/busses/i2c-at91.c +++ b/drivers/i2c/busses/i2c-at91.c @@ -434,7 +434,7 @@ static int at91_do_twi_transfer(struct at91_twi_dev *dev) } } - ret = wait_for_completion_io_timeout(&dev->cmd_complete, + ret = wait_for_completion_timeout(&dev->cmd_complete, dev->adapter.timeout); if (ret == 0) { dev_err(dev->dev, "controller timed out\n"); From e4df3a0b62285130ac0a35cf07678c154ffb649d Mon Sep 17 00:00:00 2001 From: Laurent Pinchart Date: Thu, 30 Oct 2014 15:59:37 +0200 Subject: [PATCH 219/371] i2c: core: Dispose OF IRQ mapping at client removal time Clients instantiated from OF get an IRQ mapping created at device registration time. Dispose the mapping when the client is removed. Signed-off-by: Laurent Pinchart Signed-off-by: Wolfram Sang Cc: stable@kernel.org --- drivers/i2c/i2c-core.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/i2c/i2c-core.c b/drivers/i2c/i2c-core.c index 17a1853c6c2f..f43b4e11647a 100644 --- a/drivers/i2c/i2c-core.c +++ b/drivers/i2c/i2c-core.c @@ -665,6 +665,9 @@ static int i2c_device_remove(struct device *dev) status = driver->remove(client); } + if (dev->of_node) + irq_dispose_mapping(client->irq); + dev_pm_domain_detach(&client->dev, true); return status; } From a4c724d0723b078e4ab4670e557cda1795036a7a Mon Sep 17 00:00:00 2001 From: Giedrius Statkevicius Date: Thu, 30 Oct 2014 18:57:47 +0200 Subject: [PATCH 220/371] platform: hp_accel: add a i8042 filter to remove HPQ6000 data from kb bus stream MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Add a i8042 filter to hp_accel to remove accelerometer's data with acpi id HPQ6000 from keyboard bus stream. The codes sent by accelerometer are e0 25, e0 26, e0 27 and e0 28. The relevant information is already passed through /dev/freefall so no need to send these undocumented weird signals through the keyboard bus. Also, unclogs `dmesg` because atkbd complained about weird scan codes, saves processing power and disk space. Signed-off-by: Giedrius Statkevičius Acked-by: Dmitry Torokhov Reviewed-by: Éric Piel Signed-off-by: Darren Hart --- drivers/platform/x86/hp_accel.c | 44 +++++++++++++++++++++++++++++++++ 1 file changed, 44 insertions(+) diff --git a/drivers/platform/x86/hp_accel.c b/drivers/platform/x86/hp_accel.c index 13e14ec1d3d7..6bec745b6b92 100644 --- a/drivers/platform/x86/hp_accel.c +++ b/drivers/platform/x86/hp_accel.c @@ -37,6 +37,8 @@ #include #include #include +#include +#include #include "../../misc/lis3lv02d/lis3lv02d.h" #define DRIVER_NAME "hp_accel" @@ -73,6 +75,13 @@ static inline void delayed_sysfs_set(struct led_classdev *led_cdev, /* HP-specific accelerometer driver ------------------------------------ */ +/* e0 25, e0 26, e0 27, e0 28 are scan codes that the accelerometer with acpi id + * HPQ6000 sends through the keyboard bus */ +#define ACCEL_1 0x25 +#define ACCEL_2 0x26 +#define ACCEL_3 0x27 +#define ACCEL_4 0x28 + /* For automatic insertion of the module */ static const struct acpi_device_id lis3lv02d_device_ids[] = { {"HPQ0004", 0}, /* HP Mobile Data Protection System PNP */ @@ -294,6 +303,35 @@ static void lis3lv02d_enum_resources(struct acpi_device *device) printk(KERN_DEBUG DRIVER_NAME ": Error getting resources\n"); } +static bool hp_accel_i8042_filter(unsigned char data, unsigned char str, + struct serio *port) +{ + static bool extended; + + if (str & I8042_STR_AUXDATA) + return false; + + if (data == 0xe0) { + extended = true; + return true; + } else if (unlikely(extended)) { + extended = false; + + switch (data) { + case ACCEL_1: + case ACCEL_2: + case ACCEL_3: + case ACCEL_4: + return true; + default: + serio_interrupt(port, 0xe0, 0); + return false; + } + } + + return false; +} + static int lis3lv02d_add(struct acpi_device *device) { int ret; @@ -326,6 +364,11 @@ static int lis3lv02d_add(struct acpi_device *device) if (ret) return ret; + /* filter to remove HPQ6000 accelerometer data + * from keyboard bus stream */ + if (strstr(dev_name(&device->dev), "HPQ6000")) + i8042_install_filter(hp_accel_i8042_filter); + INIT_WORK(&hpled_led.work, delayed_set_status_worker); ret = led_classdev_register(NULL, &hpled_led.led_classdev); if (ret) { @@ -343,6 +386,7 @@ static int lis3lv02d_remove(struct acpi_device *device) if (!device) return -EINVAL; + i8042_remove_filter(hp_accel_i8042_filter); lis3lv02d_joystick_disable(&lis3_dev); lis3lv02d_poweroff(&lis3_dev); From 491b079db3f7fa631f6a012e7e896a1eafe4dd99 Mon Sep 17 00:00:00 2001 From: Bai Ping Date: Tue, 14 Oct 2014 13:12:07 +0800 Subject: [PATCH 221/371] thermal: imx: correct driver load sequence for cpu cooling thermal driver should be regisetered after cpufreq driver has been registered and probed. Doing so is to make sure that thermal driver can get the max cpu cooling states correctly when calling get_property. Signed-off-by: Bai Ping Signed-off-by: Eduardo Valentin --- drivers/thermal/imx_thermal.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/thermal/imx_thermal.c b/drivers/thermal/imx_thermal.c index 461bf3d033a0..0e35999ad8b2 100644 --- a/drivers/thermal/imx_thermal.c +++ b/drivers/thermal/imx_thermal.c @@ -459,6 +459,10 @@ static int imx_thermal_probe(struct platform_device *pdev) int measure_freq; int ret; + if (!cpufreq_get_current_driver()) { + dev_dbg(&pdev->dev, "no cpufreq driver!"); + return -EPROBE_DEFER; + } data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL); if (!data) return -ENOMEM; From 1d6a27775762110d675f71d7192972c7357b99a7 Mon Sep 17 00:00:00 2001 From: Bartlomiej Zolnierkiewicz Date: Thu, 11 Sep 2014 15:00:49 +0200 Subject: [PATCH 222/371] thermal: exynos: use correct offset for TMU_CONTROL register on Exynos5260 In exynos5260_tmu_registers tmu_ctrl entry is erroneously assigned twice. The second assignment (to EXYNOS_TMU_REG_CONTROL1 define which represents 0x24 value) overrides the first one (to EXYNOS_TMU_REG_CONTROL define which represents 0x20 value) which results in the wrong (according to the Exynos5260 SoC documentation that I have) offset being used for TMU_CONTROL register. Fix it by removing the wrong assignment and then remove no longer used EXYNOS_TMU_REG_CONTROL1 define. Cc: Naveen Krishna Chatradhi Cc: Amit Daniel Kachhap Cc: Lukasz Majewski Cc: Eduardo Valentin Cc: Zhang Rui Signed-off-by: Bartlomiej Zolnierkiewicz Acked-by: Kyungmin Park Signed-off-by: Eduardo Valentin --- drivers/thermal/samsung/exynos_tmu_data.c | 1 - drivers/thermal/samsung/exynos_tmu_data.h | 1 - 2 files changed, 2 deletions(-) diff --git a/drivers/thermal/samsung/exynos_tmu_data.c b/drivers/thermal/samsung/exynos_tmu_data.c index 2683d2897e90..1724f6cdaef8 100644 --- a/drivers/thermal/samsung/exynos_tmu_data.c +++ b/drivers/thermal/samsung/exynos_tmu_data.c @@ -264,7 +264,6 @@ struct exynos_tmu_init_data const exynos5250_default_tmu_data = { static const struct exynos_tmu_registers exynos5260_tmu_registers = { .triminfo_data = EXYNOS_TMU_REG_TRIMINFO, .tmu_ctrl = EXYNOS_TMU_REG_CONTROL, - .tmu_ctrl = EXYNOS_TMU_REG_CONTROL1, .therm_trip_mode_shift = EXYNOS_TMU_TRIP_MODE_SHIFT, .therm_trip_mode_mask = EXYNOS_TMU_TRIP_MODE_MASK, .therm_trip_en_shift = EXYNOS_TMU_THERM_TRIP_EN_SHIFT, diff --git a/drivers/thermal/samsung/exynos_tmu_data.h b/drivers/thermal/samsung/exynos_tmu_data.h index 65e2ea6a9579..63de598c9c2c 100644 --- a/drivers/thermal/samsung/exynos_tmu_data.h +++ b/drivers/thermal/samsung/exynos_tmu_data.h @@ -75,7 +75,6 @@ #define EXYNOS_MAX_TRIGGER_PER_REG 4 /* Exynos5260 specific */ -#define EXYNOS_TMU_REG_CONTROL1 0x24 #define EXYNOS5260_TMU_REG_INTEN 0xC0 #define EXYNOS5260_TMU_REG_INTSTAT 0xC4 #define EXYNOS5260_TMU_REG_INTCLEAR 0xC8 From 9c6026994c2a18473c9ef9ed77e8cf8e344f4357 Mon Sep 17 00:00:00 2001 From: Aristeu Rozanski Date: Thu, 16 Oct 2014 11:49:49 -0400 Subject: [PATCH 223/371] tiny: reverse logic for DISABLE_DEV_COREDUMP It's desirable for allnconfig and tinyconfig targets to result in the least amount of code possible. DISABLE_DEV_COREDUMP exists as a way to switch off DEV_COREDUMP regardless if any drivers select WANT_DEV_COREDUMP. This patch renames the option to ENABLE_DEV_COREDUMP and setting it to 'n' (as in allnconfig or tinyconfig) will effectively disable device coredump. Cc: Josh Triplett Reviewed-by: Josh Triplett Signed-off-by: Aristeu Rozanski Reviewed-by: Johannes Berg Acked-by: Johannes Berg Signed-off-by: Greg Kroah-Hartman --- drivers/base/Kconfig | 19 +++++++++++-------- 1 file changed, 11 insertions(+), 8 deletions(-) diff --git a/drivers/base/Kconfig b/drivers/base/Kconfig index 61a33f4ba608..c29d1600e90b 100644 --- a/drivers/base/Kconfig +++ b/drivers/base/Kconfig @@ -171,20 +171,23 @@ config WANT_DEV_COREDUMP Drivers should "select" this option if they desire to use the device coredump mechanism. -config DISABLE_DEV_COREDUMP - bool "Disable device coredump" if EXPERT +config ENABLE_DEV_COREDUMP + bool "Enable device coredump" if EXPERT + default y help - Disable the device coredump mechanism despite drivers wanting to - use it; this allows for more sensitive systems or systems that - don't want to ever access the information to not have the code, - nor keep any data. + This option controls if the device coredump mechanism is available or + not; if disabled, the mechanism will be omitted even if drivers that + can use it are enabled. + Say 'N' for more sensitive systems or systems that don't want + to ever access the information to not have the code, nor keep any + data. - If unsure, say N. + If unsure, say Y. config DEV_COREDUMP bool default y if WANT_DEV_COREDUMP - depends on !DISABLE_DEV_COREDUMP + depends on ENABLE_DEV_COREDUMP config DEBUG_DRIVER bool "Driver Core verbose debug messages" From cd3d9ea142c9fd47351e79fe30c7ae2c86302cda Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Thu, 30 Oct 2014 10:00:35 +0100 Subject: [PATCH 224/371] tiny: rename ENABLE_DEV_COREDUMP to ALLOW_DEV_COREDUMP The ENABLE_DEV_COREDUMP option is misleading as it implies that it gets the framework enabled, this isn't true it just allows it to get enabled if a driver needs it. Rename it to ALLOW_DEV_COREDUMP to better capture its semantics. Signed-off-by: Johannes Berg Reviewed-by: Josh Triplett Acked-by: Aristeu Rozanski Signed-off-by: Greg Kroah-Hartman --- drivers/base/Kconfig | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/base/Kconfig b/drivers/base/Kconfig index c29d1600e90b..df04227d00cf 100644 --- a/drivers/base/Kconfig +++ b/drivers/base/Kconfig @@ -171,8 +171,8 @@ config WANT_DEV_COREDUMP Drivers should "select" this option if they desire to use the device coredump mechanism. -config ENABLE_DEV_COREDUMP - bool "Enable device coredump" if EXPERT +config ALLOW_DEV_COREDUMP + bool "Allow device coredump" if EXPERT default y help This option controls if the device coredump mechanism is available or @@ -187,7 +187,7 @@ config ENABLE_DEV_COREDUMP config DEV_COREDUMP bool default y if WANT_DEV_COREDUMP - depends on ENABLE_DEV_COREDUMP + depends on ALLOW_DEV_COREDUMP config DEBUG_DRIVER bool "Driver Core verbose debug messages" From 436c2a5036b6ffe813310df2cf327d3b69be0734 Mon Sep 17 00:00:00 2001 From: Charles Keepax Date: Thu, 6 Nov 2014 15:49:41 +0000 Subject: [PATCH 225/371] asix: Do full reset during ax88772_bind commit 3cc81d85ee01 ("asix: Don't reset PHY on if_up for ASIX 88772") causes the ethernet on Arndale to no longer function. This appears to be because the Arndale ethernet requires a full reset before it will function correctly, however simply reverting the above patch causes problems with ethtool settings getting reset. It seems the problem is that the ethernet is not properly reset during bind, and indeed the code in ax88772_bind that resets the device is a very small subset of the actual ax88772_reset function. This patch uses ax88772_reset in place of the existing reset code in ax88772_bind which removes some code duplication and fixes the ethernet on Arndale. It is still possible that the original patch causes some issues with suspend and resume but that seems like a separate issue and I haven't had a chance to test that yet. Signed-off-by: Charles Keepax Tested-by: Riku Voipio Signed-off-by: David S. Miller --- drivers/net/usb/asix_devices.c | 14 +------------- 1 file changed, 1 insertion(+), 13 deletions(-) diff --git a/drivers/net/usb/asix_devices.c b/drivers/net/usb/asix_devices.c index 2c05f6cdb12f..816d511e34d3 100644 --- a/drivers/net/usb/asix_devices.c +++ b/drivers/net/usb/asix_devices.c @@ -465,19 +465,7 @@ static int ax88772_bind(struct usbnet *dev, struct usb_interface *intf) return ret; } - ret = asix_sw_reset(dev, AX_SWRESET_IPPD | AX_SWRESET_PRL); - if (ret < 0) - return ret; - - msleep(150); - - ret = asix_sw_reset(dev, AX_SWRESET_CLEAR); - if (ret < 0) - return ret; - - msleep(150); - - ret = asix_sw_reset(dev, embd_phy ? AX_SWRESET_IPRL : AX_SWRESET_PRTE); + ax88772_reset(dev); /* Read PHYID register *AFTER* the PHY was reset properly */ phyid = asix_get_phyid(dev); From 1a17fdc4f4ed06b63fac1937470378a5441a663a Mon Sep 17 00:00:00 2001 From: Andreas Larsson Date: Wed, 5 Nov 2014 15:52:08 +0100 Subject: [PATCH 226/371] sparc32: Implement xchg and atomic_xchg using ATOMIC_HASH locks Atomicity between xchg and cmpxchg cannot be guaranteed when xchg is implemented with a swap and cmpxchg is implemented with locks. Without this, e.g. mcs_spin_lock and mcs_spin_unlock are broken. Signed-off-by: Andreas Larsson Signed-off-by: David S. Miller --- arch/sparc/include/asm/atomic_32.h | 2 +- arch/sparc/include/asm/cmpxchg_32.h | 12 ++---------- arch/sparc/lib/atomic32.c | 27 +++++++++++++++++++++++++++ 3 files changed, 30 insertions(+), 11 deletions(-) diff --git a/arch/sparc/include/asm/atomic_32.h b/arch/sparc/include/asm/atomic_32.h index 765c1776ec9f..0e69b7e7a439 100644 --- a/arch/sparc/include/asm/atomic_32.h +++ b/arch/sparc/include/asm/atomic_32.h @@ -22,7 +22,7 @@ int atomic_add_return(int, atomic_t *); int atomic_cmpxchg(atomic_t *, int, int); -#define atomic_xchg(v, new) (xchg(&((v)->counter), new)) +int atomic_xchg(atomic_t *, int); int __atomic_add_unless(atomic_t *, int, int); void atomic_set(atomic_t *, int); diff --git a/arch/sparc/include/asm/cmpxchg_32.h b/arch/sparc/include/asm/cmpxchg_32.h index 32c29a133f9d..d38b52dca216 100644 --- a/arch/sparc/include/asm/cmpxchg_32.h +++ b/arch/sparc/include/asm/cmpxchg_32.h @@ -11,22 +11,14 @@ #ifndef __ARCH_SPARC_CMPXCHG__ #define __ARCH_SPARC_CMPXCHG__ -static inline unsigned long xchg_u32(__volatile__ unsigned long *m, unsigned long val) -{ - __asm__ __volatile__("swap [%2], %0" - : "=&r" (val) - : "0" (val), "r" (m) - : "memory"); - return val; -} - +unsigned long __xchg_u32(volatile u32 *m, u32 new); void __xchg_called_with_bad_pointer(void); static inline unsigned long __xchg(unsigned long x, __volatile__ void * ptr, int size) { switch (size) { case 4: - return xchg_u32(ptr, x); + return __xchg_u32(ptr, x); } __xchg_called_with_bad_pointer(); return x; diff --git a/arch/sparc/lib/atomic32.c b/arch/sparc/lib/atomic32.c index a7c418ac26af..71cd65ab200c 100644 --- a/arch/sparc/lib/atomic32.c +++ b/arch/sparc/lib/atomic32.c @@ -45,6 +45,19 @@ ATOMIC_OP(add, +=) #undef ATOMIC_OP +int atomic_xchg(atomic_t *v, int new) +{ + int ret; + unsigned long flags; + + spin_lock_irqsave(ATOMIC_HASH(v), flags); + ret = v->counter; + v->counter = new; + spin_unlock_irqrestore(ATOMIC_HASH(v), flags); + return ret; +} +EXPORT_SYMBOL(atomic_xchg); + int atomic_cmpxchg(atomic_t *v, int old, int new) { int ret; @@ -137,3 +150,17 @@ unsigned long __cmpxchg_u32(volatile u32 *ptr, u32 old, u32 new) return (unsigned long)prev; } EXPORT_SYMBOL(__cmpxchg_u32); + +unsigned long __xchg_u32(volatile u32 *ptr, u32 new) +{ + unsigned long flags; + u32 prev; + + spin_lock_irqsave(ATOMIC_HASH(ptr), flags); + prev = *ptr; + *ptr = new; + spin_unlock_irqrestore(ATOMIC_HASH(ptr), flags); + + return (unsigned long)prev; +} +EXPORT_SYMBOL(__xchg_u32); From 09712f557b31838092e1f22a5f2dd131a843a3de Mon Sep 17 00:00:00 2001 From: Geert Uytterhoeven Date: Tue, 4 Nov 2014 17:05:25 +0100 Subject: [PATCH 227/371] cpufreq: Avoid crash in resume on SMP without OPP When resuming from s2ram on an SMP system without cpufreq operating points (e.g. there's no "operating-points" property for the CPU node in DT, or the platform doesn't use DT yet), the kernel crashes when bringing CPU 1 online: Enabling non-boot CPUs ... CPU1: Booted secondary processor Unable to handle kernel NULL pointer dereference at virtual address 0000003c pgd = ee5e6b00 [0000003c] *pgd=6e579003, *pmd=6e588003, *pte=00000000 Internal error: Oops: a07 [#1] SMP ARM Modules linked in: CPU: 0 PID: 1246 Comm: s2ram Tainted: G W 3.18.0-rc3-koelsch-01614-g0377af242bb175c8-dirty #589 task: eeec5240 ti: ee704000 task.ti: ee704000 PC is at __cpufreq_add_dev.isra.24+0x24c/0x77c LR is at __cpufreq_add_dev.isra.24+0x244/0x77c pc : [] lr : [] psr: 60000153 sp : ee705d48 ip : ee705d48 fp : ee705d84 r10: c04e0450 r9 : 00000000 r8 : 00000001 r7 : c05426a8 r6 : 00000001 r5 : 00000001 r4 : 00000000 r3 : 00000000 r2 : 00000000 r1 : 20000153 r0 : c0542734 Verify that policy is not NULL before dereferencing it to fix this. Signed-off-by: Geert Uytterhoeven Fixes: 8414809c6a1e (cpufreq: Preserve policy structure across suspend/resume) Cc: 3.12+ # 3.12+ Signed-off-by: Rafael J. Wysocki --- drivers/cpufreq/cpufreq.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c index 644b54e1e7d1..4473eba1d6b0 100644 --- a/drivers/cpufreq/cpufreq.c +++ b/drivers/cpufreq/cpufreq.c @@ -1022,7 +1022,8 @@ static struct cpufreq_policy *cpufreq_policy_restore(unsigned int cpu) read_unlock_irqrestore(&cpufreq_driver_lock, flags); - policy->governor = NULL; + if (policy) + policy->governor = NULL; return policy; } From c16561e8df7a64764ef61f02221e98273add325a Mon Sep 17 00:00:00 2001 From: Ulf Hansson Date: Thu, 6 Nov 2014 00:37:08 +0100 Subject: [PATCH 228/371] PM / Domains: Change prototype for the attach and detach callbacks Convert the prototypes to return an int in order to support error handling in these callbacks. Also, as suggested by Dmitry Torokhov, pass the domain pointer for use inside the callbacks, and so that they match the existing power_on/power_off callbacks which currently take the domain pointer. Acked-by: Dmitry Torokhov Acked-by: Geert Uytterhoeven Signed-off-by: Ulf Hansson [ khilman: added domain as parameter to callbacks, as suggested by Dmitry ] Signed-off-by: Kevin Hilman Signed-off-by: Rafael J. Wysocki --- drivers/base/power/domain.c | 4 ++-- include/linux/pm_domain.h | 6 ++++-- 2 files changed, 6 insertions(+), 4 deletions(-) diff --git a/drivers/base/power/domain.c b/drivers/base/power/domain.c index 40bc2f4072cc..b520687046d4 100644 --- a/drivers/base/power/domain.c +++ b/drivers/base/power/domain.c @@ -1437,7 +1437,7 @@ int __pm_genpd_add_device(struct generic_pm_domain *genpd, struct device *dev, spin_unlock_irq(&dev->power.lock); if (genpd->attach_dev) - genpd->attach_dev(dev); + genpd->attach_dev(genpd, dev); mutex_lock(&gpd_data->lock); gpd_data->base.dev = dev; @@ -1499,7 +1499,7 @@ int pm_genpd_remove_device(struct generic_pm_domain *genpd, genpd->max_off_time_changed = true; if (genpd->detach_dev) - genpd->detach_dev(dev); + genpd->detach_dev(genpd, dev); spin_lock_irq(&dev->power.lock); diff --git a/include/linux/pm_domain.h b/include/linux/pm_domain.h index 73e938b7e937..b3ed7766a291 100644 --- a/include/linux/pm_domain.h +++ b/include/linux/pm_domain.h @@ -72,8 +72,10 @@ struct generic_pm_domain { bool max_off_time_changed; bool cached_power_down_ok; struct gpd_cpuidle_data *cpuidle_data; - void (*attach_dev)(struct device *dev); - void (*detach_dev)(struct device *dev); + int (*attach_dev)(struct generic_pm_domain *domain, + struct device *dev); + void (*detach_dev)(struct generic_pm_domain *domain, + struct device *dev); }; static inline struct generic_pm_domain *pd_to_genpd(struct dev_pm_domain *pd) From c42bfd7f6cd26e8f712fc184460e32845d928d17 Mon Sep 17 00:00:00 2001 From: NeilBrown Date: Fri, 7 Nov 2014 15:46:56 -0800 Subject: [PATCH 229/371] Input: twl4030-pwrbutton - ensure a wakeup event is recorded. This button is treated as a wakeup source, so we need to initialise it correctly. Without the device_init_wakeup() call, dev->power.wakeup will be NULL, and pm_wakeup_event() will do nothing. Signed-off-by: NeilBrown Signed-off-by: Dmitry Torokhov --- drivers/input/misc/twl4030-pwrbutton.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/input/misc/twl4030-pwrbutton.c b/drivers/input/misc/twl4030-pwrbutton.c index fb3b63b2f85c..8400a1a34d87 100644 --- a/drivers/input/misc/twl4030-pwrbutton.c +++ b/drivers/input/misc/twl4030-pwrbutton.c @@ -85,6 +85,7 @@ static int twl4030_pwrbutton_probe(struct platform_device *pdev) } platform_set_drvdata(pdev, pwr); + device_init_wakeup(&pdev->dev, true); return 0; } From caeb0d37fa3e387eb0dd22e5d497523c002033d1 Mon Sep 17 00:00:00 2001 From: Ulrik De Bie Date: Fri, 7 Nov 2014 23:51:34 -0800 Subject: [PATCH 230/371] Input: elantech - use elantech_report_trackpoint for hardware v4 too The Fujitsu H730 has hardware v4 with a trackpoint. This enables the elantech_report_trackpoint for v4. Reported-by: Stefan Valouch Tested-by: Stefan Valouch Tested-by: Alfredo Gemma Signed-off-by: Ulrik De Bie Acked-by: Hans de Goede Signed-off-by: Dmitry Torokhov --- drivers/input/mouse/elantech.c | 16 ++++++++++++++-- 1 file changed, 14 insertions(+), 2 deletions(-) diff --git a/drivers/input/mouse/elantech.c b/drivers/input/mouse/elantech.c index 06fc6e76ffbe..53ddff91ab2e 100644 --- a/drivers/input/mouse/elantech.c +++ b/drivers/input/mouse/elantech.c @@ -792,6 +792,9 @@ static int elantech_packet_check_v4(struct psmouse *psmouse) unsigned char packet_type = packet[3] & 0x03; bool sanity_check; + if ((packet[3] & 0x0f) == 0x06) + return PACKET_TRACKPOINT; + /* * Sanity check based on the constant bits of a packet. * The constant bits change depending on the value of @@ -877,10 +880,19 @@ static psmouse_ret_t elantech_process_byte(struct psmouse *psmouse) case 4: packet_type = elantech_packet_check_v4(psmouse); - if (packet_type == PACKET_UNKNOWN) + switch (packet_type) { + case PACKET_UNKNOWN: return PSMOUSE_BAD_DATA; - elantech_report_absolute_v4(psmouse, packet_type); + case PACKET_TRACKPOINT: + elantech_report_trackpoint(psmouse, packet_type); + break; + + default: + elantech_report_absolute_v4(psmouse, packet_type); + break; + } + break; } From 0dc1587905a50f8f61bbc29e850aa592821e4bea Mon Sep 17 00:00:00 2001 From: Ulrik De Bie Date: Fri, 7 Nov 2014 23:57:34 -0800 Subject: [PATCH 231/371] Input: elantech - fix crc_enabled for Fujitsu H730 The Fujitsu H730 does not work with crc_enabled = 0, even though the crc_enabled bit in the firmware version indicated it would. When switching this value to crc_enabled to 1, the touchpad works. This patch uses DMI to detect H730. Reported-by: Stefan Valouch Tested-by: Stefan Valouch Tested-by: Alfredo Gemma Signed-off-by: Ulrik De Bie Acked-by: Hans de Goede Signed-off-by: Dmitry Torokhov --- drivers/input/mouse/elantech.c | 19 ++++++++++++++++++- 1 file changed, 18 insertions(+), 1 deletion(-) diff --git a/drivers/input/mouse/elantech.c b/drivers/input/mouse/elantech.c index 53ddff91ab2e..ce699eba9adc 100644 --- a/drivers/input/mouse/elantech.c +++ b/drivers/input/mouse/elantech.c @@ -1450,6 +1450,22 @@ static int elantech_reconnect(struct psmouse *psmouse) return 0; } +/* + * Some hw_version 4 models do not work with crc_disabled + */ +static const struct dmi_system_id elantech_dmi_force_crc_enabled[] = { +#if defined(CONFIG_DMI) && defined(CONFIG_X86) + { + /* Fujitsu H730 does not work with crc_enabled == 0 */ + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"), + DMI_MATCH(DMI_PRODUCT_NAME, "CELSIUS H730"), + }, + }, +#endif + { } +}; + /* * Some hw_version 3 models go into error state when we try to set * bit 3 and/or bit 1 of r10. @@ -1525,7 +1541,8 @@ static int elantech_set_properties(struct elantech_data *etd) * The signatures of v3 and v4 packets change depending on the * value of this hardware flag. */ - etd->crc_enabled = ((etd->fw_version & 0x4000) == 0x4000); + etd->crc_enabled = (etd->fw_version & 0x4000) == 0x4000 || + dmi_check_system(elantech_dmi_force_crc_enabled); /* Enable real hardware resolution on hw_version 3 ? */ etd->set_hw_resolution = !dmi_check_system(no_hw_res_dmi_table); From b4565913460cbd7d86c6bd52913dfaa07fa384aa Mon Sep 17 00:00:00 2001 From: Devin Ryles Date: Fri, 7 Nov 2014 18:02:47 -0500 Subject: [PATCH 232/371] ALSA: hda_intel: Add DeviceIDs for Sunrise Point-LP This patch adds DeviceIDs for Sunrise Point-LP Signed-off-by: Devin Ryles Cc: Signed-off-by: Takashi Iwai --- sound/pci/hda/hda_intel.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/sound/pci/hda/hda_intel.c b/sound/pci/hda/hda_intel.c index 9ab1e631cb32..16660f312043 100644 --- a/sound/pci/hda/hda_intel.c +++ b/sound/pci/hda/hda_intel.c @@ -219,6 +219,7 @@ MODULE_SUPPORTED_DEVICE("{{Intel, ICH6}," "{Intel, LPT_LP}," "{Intel, WPT_LP}," "{Intel, SPT}," + "{Intel, SPT_LP}," "{Intel, HPT}," "{Intel, PBG}," "{Intel, SCH}," @@ -2004,6 +2005,9 @@ static const struct pci_device_id azx_ids[] = { /* Sunrise Point */ { PCI_DEVICE(0x8086, 0xa170), .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH }, + /* Sunrise Point-LP */ + { PCI_DEVICE(0x8086, 0x9d70), + .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH }, /* Haswell */ { PCI_DEVICE(0x8086, 0x0a0c), .driver_data = AZX_DRIVER_HDMI | AZX_DCAPS_INTEL_HASWELL }, From 403b9636fe9f59124d1a437a297b330729061252 Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Sat, 8 Nov 2014 19:17:13 +0300 Subject: [PATCH 233/371] PM / sleep: Fix entering suspend-to-IDLE if no freeze_oops is set If no freeze_ops is set, trying to enter suspend-to-IDLE will cause a nice oops in platform_suspend_prepare_late(). Add respective checks to platform_suspend_prepare_late() and platform_resume_early() functions. Fixes: a8d46b9e4e48 (ACPI / sleep: Rework the handling of ACPI GPE wakeup ...) Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: Rafael J. Wysocki --- kernel/power/suspend.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/kernel/power/suspend.c b/kernel/power/suspend.c index 4ca9a33ff620..c347e3ce3a55 100644 --- a/kernel/power/suspend.c +++ b/kernel/power/suspend.c @@ -146,7 +146,7 @@ static int platform_suspend_prepare(suspend_state_t state) static int platform_suspend_prepare_late(suspend_state_t state) { - return state == PM_SUSPEND_FREEZE && freeze_ops->prepare ? + return state == PM_SUSPEND_FREEZE && freeze_ops && freeze_ops->prepare ? freeze_ops->prepare() : 0; } @@ -164,7 +164,7 @@ static void platform_resume_noirq(suspend_state_t state) static void platform_resume_early(suspend_state_t state) { - if (state == PM_SUSPEND_FREEZE && freeze_ops->restore) + if (state == PM_SUSPEND_FREEZE && freeze_ops && freeze_ops->restore) freeze_ops->restore(); } From 92c9e0c780e61f821ab8a08f0d4d4fd33ba1197c Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Andreas=20F=C3=A4rber?= Date: Thu, 6 Nov 2014 18:22:10 +0100 Subject: [PATCH 234/371] ARM: dts: zynq: Enable PL clocks for Parallella MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The Parallella board comes with a U-Boot bootloader that loads one of two predefined FPGA bitstreams before booting the kernel. Both define an AXI interface to the on-board Epiphany processor. Enable clocks FCLK0..FCLK3 for the Programmable Logic by default. Otherwise accessing, e.g., the ESYSRESET register freezes the board, as seen with the Epiphany SDK tools e-reset and e-hw-rev, using /dev/mem. Cc: # 3.17.x Signed-off-by: Andreas Färber Acked-by: Michal Simek Signed-off-by: Olof Johansson --- arch/arm/boot/dts/zynq-parallella.dts | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/arch/arm/boot/dts/zynq-parallella.dts b/arch/arm/boot/dts/zynq-parallella.dts index e1f51ca127fe..0429bbd89fba 100644 --- a/arch/arm/boot/dts/zynq-parallella.dts +++ b/arch/arm/boot/dts/zynq-parallella.dts @@ -34,6 +34,10 @@ }; }; +&clkc { + fclk-enable = <0xf>; +}; + &gem0 { status = "okay"; phy-mode = "rgmii-id"; From 4ab8f7f320f91f279c3f06a9795cfea5c972888a Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Pali=20Roh=C3=A1r?= Date: Sat, 8 Nov 2014 12:45:23 -0800 Subject: [PATCH 235/371] Input: alps - ignore potential bare packets when device is out of sync MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 5th and 6th byte of ALPS trackstick V3 protocol match condition for first byte of PS/2 3 bytes packet. When driver enters out of sync state and ALPS trackstick is sending data then driver match 5th, 6th and next 1st bytes as PS/2. It basically means if user is using trackstick when driver is in out of sync state driver will never resync. Processing these bytes as 3 bytes PS/2 data cause total mess (random cursor movements, random clicks) and make trackstick unusable until psmouse driver decide to do full device reset. Lot of users reported problems with ALPS devices on Dell Latitude E6440, E6540 and E7440 laptops. ALPS device or Dell EC for unknown reason send some invalid ALPS PS/2 bytes which cause driver out of sync. It looks like that i8042 and psmouse/alps driver always receive group of 6 bytes packets so there are no missing bytes and no bytes were inserted between valid ones. This patch does not fix root of problem with ALPS devices found in Dell Latitude laptops but it does not allow to process some (invalid) subsequence of 6 bytes ALPS packets as 3 bytes PS/2 when driver is out of sync. So with this patch trackstick input device does not report bogus data when also driver is out of sync, so trackstick should be usable on those machines. Signed-off-by: Pali Rohár Tested-by: Pali Rohár Cc: stable@vger.kernel.org Reviewed-by: Hans de Goede Signed-off-by: Dmitry Torokhov --- drivers/input/mouse/alps.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/drivers/input/mouse/alps.c b/drivers/input/mouse/alps.c index 2b0ae8cc8e51..da18c977e7b8 100644 --- a/drivers/input/mouse/alps.c +++ b/drivers/input/mouse/alps.c @@ -1156,7 +1156,13 @@ static psmouse_ret_t alps_process_byte(struct psmouse *psmouse) { struct alps_data *priv = psmouse->private; - if ((psmouse->packet[0] & 0xc8) == 0x08) { /* PS/2 packet */ + /* + * Check if we are dealing with a bare PS/2 packet, presumably from + * a device connected to the external PS/2 port. Because bare PS/2 + * protocol does not have enough constant bits to self-synchronize + * properly we only do this if the device is fully synchronized. + */ + if (!psmouse->out_of_sync_cnt && (psmouse->packet[0] & 0xc8) == 0x08) { if (psmouse->pktcnt == 3) { alps_report_bare_ps2_packet(psmouse, psmouse->packet, true); From 90a21ff5824c3ae8b49c1c0498b137792b935aab Mon Sep 17 00:00:00 2001 From: Heiner Kallweit Date: Sat, 8 Nov 2014 20:35:54 +0100 Subject: [PATCH 236/371] imx: thermal: imx_get_temp might be called before sensor clock is prepared imx_get_temp might be called before the sensor clock is prepared thus resulting in a timeout of the first attempt to read temp: thermal thermal_zone0: failed to read out thermal zone 0 Happened to me on a Utilite Standard with IMX6 Dual SoC. Reason is that in imx_thermal_probe thermal_zone_device_register is called before the sensor clock is prepared. thermal_zone_device_register however calls thermal_zone_device_update which eventually calls imx_get_temp. Fix this by preparing the clock before calling thermal_zone_device_register. Signed-off-by: Heiner Kallweit Signed-off-by: Eduardo Valentin --- drivers/thermal/imx_thermal.c | 41 +++++++++++++++++++++-------------- 1 file changed, 25 insertions(+), 16 deletions(-) diff --git a/drivers/thermal/imx_thermal.c b/drivers/thermal/imx_thermal.c index 0e35999ad8b2..5a1f1070b702 100644 --- a/drivers/thermal/imx_thermal.c +++ b/drivers/thermal/imx_thermal.c @@ -525,6 +525,30 @@ static int imx_thermal_probe(struct platform_device *pdev) return ret; } + data->thermal_clk = devm_clk_get(&pdev->dev, NULL); + if (IS_ERR(data->thermal_clk)) { + ret = PTR_ERR(data->thermal_clk); + if (ret != -EPROBE_DEFER) + dev_err(&pdev->dev, + "failed to get thermal clk: %d\n", ret); + cpufreq_cooling_unregister(data->cdev); + return ret; + } + + /* + * Thermal sensor needs clk on to get correct value, normally + * we should enable its clk before taking measurement and disable + * clk after measurement is done, but if alarm function is enabled, + * hardware will auto measure the temperature periodically, so we + * need to keep the clk always on for alarm function. + */ + ret = clk_prepare_enable(data->thermal_clk); + if (ret) { + dev_err(&pdev->dev, "failed to enable thermal clk: %d\n", ret); + cpufreq_cooling_unregister(data->cdev); + return ret; + } + data->tz = thermal_zone_device_register("imx_thermal_zone", IMX_TRIP_NUM, BIT(IMX_TRIP_PASSIVE), data, @@ -535,26 +559,11 @@ static int imx_thermal_probe(struct platform_device *pdev) ret = PTR_ERR(data->tz); dev_err(&pdev->dev, "failed to register thermal zone device %d\n", ret); + clk_disable_unprepare(data->thermal_clk); cpufreq_cooling_unregister(data->cdev); return ret; } - data->thermal_clk = devm_clk_get(&pdev->dev, NULL); - if (IS_ERR(data->thermal_clk)) { - dev_warn(&pdev->dev, "failed to get thermal clk!\n"); - } else { - /* - * Thermal sensor needs clk on to get correct value, normally - * we should enable its clk before taking measurement and disable - * clk after measurement is done, but if alarm function is enabled, - * hardware will auto measure the temperature periodically, so we - * need to keep the clk always on for alarm function. - */ - ret = clk_prepare_enable(data->thermal_clk); - if (ret) - dev_warn(&pdev->dev, "failed to enable thermal clk: %d\n", ret); - } - /* Enable measurements at ~ 10 Hz */ regmap_write(map, TEMPSENSE1 + REG_CLR, TEMPSENSE1_MEASURE_FREQ); measure_freq = DIV_ROUND_UP(32768, 10); /* 10 Hz */ From 206c5f60a3d902bc4b56dab2de3e88de5eb06108 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sun, 9 Nov 2014 14:55:29 -0800 Subject: [PATCH 237/371] Linux 3.18-rc4 --- Makefile | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/Makefile b/Makefile index ffc1ce2b0345..bc7eb6ada966 100644 --- a/Makefile +++ b/Makefile @@ -1,7 +1,7 @@ VERSION = 3 PATCHLEVEL = 18 SUBLEVEL = 0 -EXTRAVERSION = -rc3 +EXTRAVERSION = -rc4 NAME = Diseased Newt # *DOCUMENTATION* From 06a2f5c2c4e0cb4ff38ca3769ae1f81cc2d030cf Mon Sep 17 00:00:00 2001 From: Inki Dae Date: Thu, 6 Nov 2014 19:23:35 +0900 Subject: [PATCH 238/371] drm/exynos: resolve infinite loop issue on multi-platform This patch resolves temporarily infinite loop issue incurred when Exynos drm driver is enabled and multi-platform kernel is used by registering Exynos drm device object only in case of Exynos SoC. So this patch will be replaced with more generic way later. Signed-off-by: Inki Dae --- drivers/gpu/drm/exynos/exynos_drm_drv.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/drivers/gpu/drm/exynos/exynos_drm_drv.c b/drivers/gpu/drm/exynos/exynos_drm_drv.c index c57466edf45b..d41aae0dcc60 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_drv.c +++ b/drivers/gpu/drm/exynos/exynos_drm_drv.c @@ -741,6 +741,18 @@ static int exynos_drm_init(void) { int ret; + /* + * Register device object only in case of Exynos SoC. + * + * Below codes resolves temporarily infinite loop issue incurred + * by Exynos drm driver when using multi-platform kernel. + * So these codes will be replaced with more generic way later. + */ + if (!of_machine_is_compatible("samsung,exynos3") && + !of_machine_is_compatible("samsung,exynos4") && + !of_machine_is_compatible("samsung,exynos5")) + return -ENODEV; + exynos_drm_pdev = platform_device_register_simple("exynos-drm", -1, NULL, 0); if (IS_ERR(exynos_drm_pdev)) From f7c2f36f4395f12d8ecb25c28ee88ec87b457089 Mon Sep 17 00:00:00 2001 From: Inki Dae Date: Thu, 6 Nov 2014 23:00:37 +0900 Subject: [PATCH 239/371] drm/exynos: resolve infinite loop issue on non multi-platform This patch resovles the infinite loop issue incurred when Exyno drm driver is enabled but all kms drivers are disabled on Exynos board by returning -EPROBE_DEFER only in case that there is kms device registered. Signed-off-by: Inki Dae --- drivers/gpu/drm/exynos/exynos_drm_drv.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/gpu/drm/exynos/exynos_drm_drv.c b/drivers/gpu/drm/exynos/exynos_drm_drv.c index d41aae0dcc60..b8abbc4a3d8b 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_drv.c +++ b/drivers/gpu/drm/exynos/exynos_drm_drv.c @@ -495,6 +495,12 @@ static struct component_match *exynos_drm_match_add(struct device *dev) mutex_lock(&drm_component_lock); + /* Do not retry to probe if there is no any kms driver regitered. */ + if (list_empty(&drm_component_list)) { + mutex_unlock(&drm_component_lock); + return ERR_PTR(-ENODEV); + } + list_for_each_entry(cdev, &drm_component_list, list) { /* * Add components to master only in case that crtc and From 9ad703e9435a5a9fb267b69af298498dc7d0db55 Mon Sep 17 00:00:00 2001 From: Inki Dae Date: Fri, 7 Nov 2014 20:31:08 +0900 Subject: [PATCH 240/371] drm/exynos: g2d: fix null pointer dereference This patch fixes a null pointer dereference issue incurred by calling g2d_remove when exynos_drm_platform_probe is failed. cmdlist_pool of g2d is allocated when g2d sub driver is probed. So if exynos_drm_platform_probe is failed, the g2d sub driver is not probed and the cmdlist_pool is still NULL. Signed-off-by: Inki Dae --- drivers/gpu/drm/exynos/exynos_drm_g2d.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/exynos/exynos_drm_g2d.c b/drivers/gpu/drm/exynos/exynos_drm_g2d.c index df7a77d3eff8..6ff8599f6cbf 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_g2d.c +++ b/drivers/gpu/drm/exynos/exynos_drm_g2d.c @@ -302,9 +302,12 @@ static void g2d_fini_cmdlist(struct g2d_data *g2d) struct exynos_drm_subdrv *subdrv = &g2d->subdrv; kfree(g2d->cmdlist_node); - dma_free_attrs(subdrv->drm_dev->dev, G2D_CMDLIST_POOL_SIZE, - g2d->cmdlist_pool_virt, - g2d->cmdlist_pool, &g2d->cmdlist_dma_attrs); + + if (g2d->cmdlist_pool_virt && g2d->cmdlist_pool) { + dma_free_attrs(subdrv->drm_dev->dev, G2D_CMDLIST_POOL_SIZE, + g2d->cmdlist_pool_virt, + g2d->cmdlist_pool, &g2d->cmdlist_dma_attrs); + } } static struct g2d_cmdlist_node *g2d_get_cmdlist(struct g2d_data *g2d) From 7afbfcc9ae6af259351e6fa6b931b1a38b62d9ab Mon Sep 17 00:00:00 2001 From: Inki Dae Date: Fri, 7 Nov 2014 21:32:34 +0900 Subject: [PATCH 241/371] drm/exynos: fix possible infinite loop issue This patch fixes possible infinite loop issue by postponing registration to non kms drivers after component_master_add_with_match call, which can be incurred in all cases that non kms driver is probed and then component bind is failed This patch should be applied on top of below patches, http://comments.gmane.org/gmane.comp.video.dri.devel/117740 http://www.spinics.net/lists/linux-samsung-soc/msg38624.html Signed-off-by: Inki Dae --- drivers/gpu/drm/exynos/exynos_drm_drv.c | 31 ++++++++++++------------- 1 file changed, 15 insertions(+), 16 deletions(-) diff --git a/drivers/gpu/drm/exynos/exynos_drm_drv.c b/drivers/gpu/drm/exynos/exynos_drm_drv.c index b8abbc4a3d8b..e5c4c6c8c967 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_drv.c +++ b/drivers/gpu/drm/exynos/exynos_drm_drv.c @@ -591,10 +591,21 @@ static int exynos_drm_platform_probe(struct platform_device *pdev) goto err_unregister_mixer_drv; #endif + match = exynos_drm_match_add(&pdev->dev); + if (IS_ERR(match)) { + ret = PTR_ERR(match); + goto err_unregister_hdmi_drv; + } + + ret = component_master_add_with_match(&pdev->dev, &exynos_drm_ops, + match); + if (ret < 0) + goto err_unregister_hdmi_drv; + #ifdef CONFIG_DRM_EXYNOS_G2D ret = platform_driver_register(&g2d_driver); if (ret < 0) - goto err_unregister_hdmi_drv; + goto err_del_component_master; #endif #ifdef CONFIG_DRM_EXYNOS_FIMC @@ -625,23 +636,9 @@ static int exynos_drm_platform_probe(struct platform_device *pdev) goto err_unregister_ipp_drv; #endif - match = exynos_drm_match_add(&pdev->dev); - if (IS_ERR(match)) { - ret = PTR_ERR(match); - goto err_unregister_resources; - } - - ret = component_master_add_with_match(&pdev->dev, &exynos_drm_ops, - match); - if (ret < 0) - goto err_unregister_resources; - return ret; -err_unregister_resources: - #ifdef CONFIG_DRM_EXYNOS_IPP - exynos_platform_device_ipp_unregister(); err_unregister_ipp_drv: platform_driver_unregister(&ipp_driver); err_unregister_gsc_drv: @@ -664,9 +661,11 @@ err_unregister_g2d_drv: #ifdef CONFIG_DRM_EXYNOS_G2D platform_driver_unregister(&g2d_driver); -err_unregister_hdmi_drv: +err_del_component_master: #endif + component_master_del(&pdev->dev, &exynos_drm_ops); +err_unregister_hdmi_drv: #ifdef CONFIG_DRM_EXYNOS_HDMI platform_driver_unregister(&hdmi_driver); err_unregister_mixer_drv: From 9d720b34c0a432639252f63012e18b0507f5b432 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Pali=20Roh=C3=A1r?= Date: Sat, 8 Nov 2014 12:58:57 -0800 Subject: [PATCH 242/371] Input: alps - allow up to 2 invalid packets without resetting device MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit On some Dell Latitude laptops ALPS device or Dell EC send one invalid byte in 6 bytes ALPS packet. In this case psmouse driver enter out of sync state. It looks like that all other bytes in packets are valid and also device working properly. So there is no need to do full device reset, just need to wait for byte which match condition for first byte (start of packet). Because ALPS packets are bigger (6 or 8 bytes) default limit is small. This patch increase number of invalid bytes to size of 2 ALPS packets which psmouse driver can drop before do full reset. Resetting ALPS devices take some time and when doing reset on some Dell laptops touchpad, trackstick and also keyboard do not respond. So it is better to do it only if really necessary. Signed-off-by: Pali Rohár Tested-by: Pali Rohár Reviewed-by: Hans de Goede Cc: stable@vger.kernel.org Signed-off-by: Dmitry Torokhov --- drivers/input/mouse/alps.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/input/mouse/alps.c b/drivers/input/mouse/alps.c index da18c977e7b8..433638e7e4af 100644 --- a/drivers/input/mouse/alps.c +++ b/drivers/input/mouse/alps.c @@ -2395,6 +2395,9 @@ int alps_init(struct psmouse *psmouse) /* We are having trouble resyncing ALPS touchpads so disable it for now */ psmouse->resync_time = 0; + /* Allow 2 invalid packets without resetting device */ + psmouse->resetafter = psmouse->pktsize * 2; + return 0; init_fail: From 54279552bd260532d90e7a59fbc931924bbb0f7b Mon Sep 17 00:00:00 2001 From: Boris Ostrovsky Date: Fri, 31 Oct 2014 11:49:32 -0400 Subject: [PATCH 243/371] x86/core, x86/xen/smp: Use 'die_complete' completion when taking CPU down Commit 2ed53c0d6cc9 ("x86/smpboot: Speed up suspend/resume by avoiding 100ms sleep for CPU offline during S3") introduced completions to CPU offlining process. These completions are not initialized on Xen kernels causing a panic in play_dead_common(). Move handling of die_complete into common routines to make them available to Xen guests. Signed-off-by: Boris Ostrovsky Reviewed-by: David Vrabel Cc: tianyu.lan@intel.com Cc: konrad.wilk@oracle.com Cc: xen-devel@lists.xenproject.org Cc: Linus Torvalds Link: http://lkml.kernel.org/r/1414770572-7950-1-git-send-email-boris.ostrovsky@oracle.com Signed-off-by: Ingo Molnar --- arch/x86/include/asm/smp.h | 1 + arch/x86/kernel/smpboot.c | 15 +++++++++++---- arch/x86/xen/smp.c | 3 +++ 3 files changed, 15 insertions(+), 4 deletions(-) diff --git a/arch/x86/include/asm/smp.h b/arch/x86/include/asm/smp.h index 8cd27e08e23c..8cd1cc3bc835 100644 --- a/arch/x86/include/asm/smp.h +++ b/arch/x86/include/asm/smp.h @@ -150,6 +150,7 @@ static inline void arch_send_call_function_ipi_mask(const struct cpumask *mask) } void cpu_disable_common(void); +void cpu_die_common(unsigned int cpu); void native_smp_prepare_boot_cpu(void); void native_smp_prepare_cpus(unsigned int max_cpus); void native_smp_cpus_done(unsigned int max_cpus); diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c index 4d2128ac70bd..668d8f2a8781 100644 --- a/arch/x86/kernel/smpboot.c +++ b/arch/x86/kernel/smpboot.c @@ -1303,10 +1303,14 @@ static void __ref remove_cpu_from_maps(int cpu) numa_remove_cpu(cpu); } +static DEFINE_PER_CPU(struct completion, die_complete); + void cpu_disable_common(void) { int cpu = smp_processor_id(); + init_completion(&per_cpu(die_complete, smp_processor_id())); + remove_siblinginfo(cpu); /* It's now safe to remove this processor from the online map */ @@ -1316,8 +1320,6 @@ void cpu_disable_common(void) fixup_irqs(); } -static DEFINE_PER_CPU(struct completion, die_complete); - int native_cpu_disable(void) { int ret; @@ -1327,16 +1329,21 @@ int native_cpu_disable(void) return ret; clear_local_APIC(); - init_completion(&per_cpu(die_complete, smp_processor_id())); cpu_disable_common(); return 0; } +void cpu_die_common(unsigned int cpu) +{ + wait_for_completion_timeout(&per_cpu(die_complete, cpu), HZ); +} + void native_cpu_die(unsigned int cpu) { /* We don't do anything here: idle task is faking death itself. */ - wait_for_completion_timeout(&per_cpu(die_complete, cpu), HZ); + + cpu_die_common(cpu); /* They ack this in play_dead() by setting CPU_DEAD */ if (per_cpu(cpu_state, cpu) == CPU_DEAD) { diff --git a/arch/x86/xen/smp.c b/arch/x86/xen/smp.c index 8650cdb53209..4c071aeb8417 100644 --- a/arch/x86/xen/smp.c +++ b/arch/x86/xen/smp.c @@ -510,6 +510,9 @@ static void xen_cpu_die(unsigned int cpu) current->state = TASK_UNINTERRUPTIBLE; schedule_timeout(HZ/10); } + + cpu_die_common(cpu); + xen_smp_intr_free(cpu); xen_uninit_lock_cpu(cpu); xen_teardown_timer(cpu); From c0a717f23dccdb6e3b03471bc846fdc636f2b353 Mon Sep 17 00:00:00 2001 From: Borislav Petkov Date: Wed, 5 Nov 2014 17:42:42 +0100 Subject: [PATCH 244/371] x86, microcode, AMD: Fix ucode patch stashing on 32-bit Save the patch while we're running on the BSP instead of later, before the initrd has been jettisoned. More importantly, on 32-bit we need to access the physical address instead of the virtual. This way we actually do find it on the APs instead of having to go through the initrd each time. Tested-by: Richard Hendershot Fixes: 5335ba5cf475 ("x86, microcode, AMD: Fix early ucode loading") Cc: # v3.13+ Signed-off-by: Borislav Petkov --- arch/x86/kernel/cpu/microcode/amd_early.c | 24 +++++++++++++---------- 1 file changed, 14 insertions(+), 10 deletions(-) diff --git a/arch/x86/kernel/cpu/microcode/amd_early.c b/arch/x86/kernel/cpu/microcode/amd_early.c index 8b75f7050129..06674473b0e6 100644 --- a/arch/x86/kernel/cpu/microcode/amd_early.c +++ b/arch/x86/kernel/cpu/microcode/amd_early.c @@ -108,12 +108,13 @@ static size_t compute_container_size(u8 *data, u32 total_size) * load_microcode_amd() to save equivalent cpu table and microcode patches in * kernel heap memory. */ -static void apply_ucode_in_initrd(void *ucode, size_t size) +static void apply_ucode_in_initrd(void *ucode, size_t size, bool save_patch) { struct equiv_cpu_entry *eq; size_t *cont_sz; u32 *header; u8 *data, **cont; + u8 (*patch)[PATCH_MAX_SIZE]; u16 eq_id = 0; int offset, left; u32 rev, eax, ebx, ecx, edx; @@ -123,10 +124,12 @@ static void apply_ucode_in_initrd(void *ucode, size_t size) new_rev = (u32 *)__pa_nodebug(&ucode_new_rev); cont_sz = (size_t *)__pa_nodebug(&container_size); cont = (u8 **)__pa_nodebug(&container); + patch = (u8 (*)[PATCH_MAX_SIZE])__pa_nodebug(&amd_ucode_patch); #else new_rev = &ucode_new_rev; cont_sz = &container_size; cont = &container; + patch = &amd_ucode_patch; #endif data = ucode; @@ -213,9 +216,9 @@ static void apply_ucode_in_initrd(void *ucode, size_t size) rev = mc->hdr.patch_id; *new_rev = rev; - /* save ucode patch */ - memcpy(amd_ucode_patch, mc, - min_t(u32, header[1], PATCH_MAX_SIZE)); + if (save_patch) + memcpy(patch, mc, + min_t(u32, header[1], PATCH_MAX_SIZE)); } } @@ -246,7 +249,7 @@ void __init load_ucode_amd_bsp(void) *data = cp.data; *size = cp.size; - apply_ucode_in_initrd(cp.data, cp.size); + apply_ucode_in_initrd(cp.data, cp.size, true); } #ifdef CONFIG_X86_32 @@ -263,7 +266,7 @@ void load_ucode_amd_ap(void) size_t *usize; void **ucode; - mc = (struct microcode_amd *)__pa(amd_ucode_patch); + mc = (struct microcode_amd *)__pa_nodebug(amd_ucode_patch); if (mc->hdr.patch_id && mc->hdr.processor_rev_id) { __apply_microcode_amd(mc); return; @@ -275,7 +278,7 @@ void load_ucode_amd_ap(void) if (!*ucode || !*usize) return; - apply_ucode_in_initrd(*ucode, *usize); + apply_ucode_in_initrd(*ucode, *usize, false); } static void __init collect_cpu_sig_on_bsp(void *arg) @@ -339,7 +342,7 @@ void load_ucode_amd_ap(void) * AP has a different equivalence ID than BSP, looks like * mixed-steppings silicon so go through the ucode blob anew. */ - apply_ucode_in_initrd(ucode_cpio.data, ucode_cpio.size); + apply_ucode_in_initrd(ucode_cpio.data, ucode_cpio.size, false); } } #endif @@ -347,6 +350,7 @@ void load_ucode_amd_ap(void) int __init save_microcode_in_initrd_amd(void) { unsigned long cont; + int retval = 0; enum ucode_state ret; u8 *cont_va; u32 eax; @@ -387,7 +391,7 @@ int __init save_microcode_in_initrd_amd(void) ret = load_microcode_amd(eax, container, container_size); if (ret != UCODE_OK) - return -EINVAL; + retval = -EINVAL; /* * This will be freed any msec now, stash patches for the current @@ -396,5 +400,5 @@ int __init save_microcode_in_initrd_amd(void) container = NULL; container_size = 0; - return 0; + return retval; } From 48379270fe6808cf4612ee094adc8da2b7a83baa Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Mon, 3 Nov 2014 19:36:40 +0100 Subject: [PATCH 245/371] scsi: only re-lock door after EH on devices that were reset Setups that use the blk-mq I/O path can lock up if a host with a single device that has its door locked enters EH. Make sure to only send the command to re-lock the door to devices that actually were reset and thus might have lost their state. Otherwise the EH code might be get blocked on blk_get_request as all requests for non-reset devices might be in use. Cc: stable@vger.kernel.org Signed-off-by: Christoph Hellwig Reported-by: Meelis Roos Tested-by: Meelis Roos Reviewed-by: Martin K. Petersen --- drivers/scsi/scsi_error.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/scsi/scsi_error.c b/drivers/scsi/scsi_error.c index 9a6f8468225f..c21e53071600 100644 --- a/drivers/scsi/scsi_error.c +++ b/drivers/scsi/scsi_error.c @@ -2001,8 +2001,10 @@ static void scsi_restart_operations(struct Scsi_Host *shost) * is no point trying to lock the door of an off-line device. */ shost_for_each_device(sdev, shost) { - if (scsi_device_online(sdev) && sdev->locked) + if (scsi_device_online(sdev) && sdev->was_reset && sdev->locked) { scsi_eh_lock_door(sdev); + sdev->was_reset = 0; + } } /* From e925cc431ac8285ad6e8b3fe09f6e3d8b3c30d56 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Thu, 6 Nov 2014 15:11:22 -0600 Subject: [PATCH 246/371] scsi: call device handler for failed TUR command Multipath devices using the TUR path checker need to see the sense code for a failed TUR command in their device handler. Since commit 14216561e164671ce147458653b1fea06a we always return success for mid layer issued TUR commands before calling the device handler, which stopped the TUR path checker from working. Move the call to the device handler check sense method before the early return for TUR commands to give the device handler a chance to intercept them. Signed-off-by: Christoph Hellwig Tested-by: Wen Xiong Reviewed-by: Hannes Reinecke --- drivers/scsi/scsi_error.c | 16 ++++++++-------- 1 file changed, 8 insertions(+), 8 deletions(-) diff --git a/drivers/scsi/scsi_error.c b/drivers/scsi/scsi_error.c index c21e53071600..bc5ff6ff9c79 100644 --- a/drivers/scsi/scsi_error.c +++ b/drivers/scsi/scsi_error.c @@ -459,14 +459,6 @@ static int scsi_check_sense(struct scsi_cmnd *scmd) if (! scsi_command_normalize_sense(scmd, &sshdr)) return FAILED; /* no valid sense data */ - if (scmd->cmnd[0] == TEST_UNIT_READY && scmd->scsi_done != scsi_eh_done) - /* - * nasty: for mid-layer issued TURs, we need to return the - * actual sense data without any recovery attempt. For eh - * issued ones, we need to try to recover and interpret - */ - return SUCCESS; - scsi_report_sense(sdev, &sshdr); if (scsi_sense_is_deferred(&sshdr)) @@ -482,6 +474,14 @@ static int scsi_check_sense(struct scsi_cmnd *scmd) /* handler does not care. Drop down to default handling */ } + if (scmd->cmnd[0] == TEST_UNIT_READY && scmd->scsi_done != scsi_eh_done) + /* + * nasty: for mid-layer issued TURs, we need to return the + * actual sense data without any recovery attempt. For eh + * issued ones, we need to try to recover and interpret + */ + return SUCCESS; + /* * Previous logic looked for FILEMARK, EOM or ILI which are * mainly associated with tapes and returned SUCCESS. From 333b2448cf5bd5a94c91a77136cac837d38fb984 Mon Sep 17 00:00:00 2001 From: "wenxiong@linux.vnet.ibm.com" Date: Thu, 6 Nov 2014 15:11:23 -0600 Subject: [PATCH 247/371] scsi: TUR path is down after adapter gets reset with multipath This patch fixes an issue with multipath ipr SAS devices which require a start unit command to be issued following an adapter reset. Without this patch, paths get marked failed following an adapter reset and since the error handler never gets invoked to issue the start unit, the paths are never recovered. Returning FAILED for this case ensures the error handler wakes up to issue the start unit. Signed-off-by: Brian King Tested-by: Wen Xiong Reviewed-by: Hannes Reinecke Signed-off-by: Christoph Hellwig --- drivers/scsi/device_handler/scsi_dh_alua.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/scsi/device_handler/scsi_dh_alua.c b/drivers/scsi/device_handler/scsi_dh_alua.c index e99507ed0e3c..fd78bdc53528 100644 --- a/drivers/scsi/device_handler/scsi_dh_alua.c +++ b/drivers/scsi/device_handler/scsi_dh_alua.c @@ -474,6 +474,13 @@ static int alua_check_sense(struct scsi_device *sdev, * LUN Not Ready -- Offline */ return SUCCESS; + if (sdev->allow_restart && + sense_hdr->asc == 0x04 && sense_hdr->ascq == 0x02) + /* + * if the device is not started, we need to wake + * the error handler to start the motor + */ + return FAILED; break; case UNIT_ATTENTION: if (sense_hdr->asc == 0x29 && sense_hdr->ascq == 0x00) From d8ae3c33599ac5c7bc758d88529debbbe8c09265 Mon Sep 17 00:00:00 2001 From: Anish Bhatt Date: Tue, 4 Nov 2014 15:19:22 -0800 Subject: [PATCH 248/371] cxgbi: add maintainer for cxgb3i/cxgb4i Signed-off-by: Anish Bhatt Signed-off-by: Christoph Hellwig --- MAINTAINERS | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/MAINTAINERS b/MAINTAINERS index ea4d0058fd1b..84d9c5dea6bc 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -2744,6 +2744,13 @@ W: http://www.chelsio.com S: Supported F: drivers/net/ethernet/chelsio/cxgb3/ +CXGB3 ISCSI DRIVER (CXGB3I) +M: Karen Xie +L: linux-scsi@vger.kernel.org +W: http://www.chelsio.com +S: Supported +F: drivers/scsi/cxgbi/cxgb3i + CXGB3 IWARP RNIC DRIVER (IW_CXGB3) M: Steve Wise L: linux-rdma@vger.kernel.org @@ -2758,6 +2765,13 @@ W: http://www.chelsio.com S: Supported F: drivers/net/ethernet/chelsio/cxgb4/ +CXGB4 ISCSI DRIVER (CXGB4I) +M: Karen Xie +L: linux-scsi@vger.kernel.org +W: http://www.chelsio.com +S: Supported +F: drivers/scsi/cxgbi/cxgb4i + CXGB4 IWARP RNIC DRIVER (IW_CXGB4) M: Steve Wise L: linux-rdma@vger.kernel.org From 7b07bf244ae33e4ce8d51c23f1359121942a6f3e Mon Sep 17 00:00:00 2001 From: Anish Bhatt Date: Thu, 6 Nov 2014 12:53:58 -0800 Subject: [PATCH 249/371] cxgb4i: send abort_rpl correctly Connection retries were not being cleaned up correctly if they failed as a result of link down. Applies on top of drivers-for-3.18. Signed-off-by: Anish Bhatt Signed-off-by: Karen Xie Signed-off-by: Christoph Hellwig --- drivers/scsi/cxgbi/cxgb4i/cxgb4i.c | 15 +++++++++------ drivers/scsi/cxgbi/libcxgbi.c | 18 ++++++++---------- 2 files changed, 17 insertions(+), 16 deletions(-) diff --git a/drivers/scsi/cxgbi/cxgb4i/cxgb4i.c b/drivers/scsi/cxgbi/cxgb4i/cxgb4i.c index 3e0a0d315f72..81bb3bd7909d 100644 --- a/drivers/scsi/cxgbi/cxgb4i/cxgb4i.c +++ b/drivers/scsi/cxgbi/cxgb4i/cxgb4i.c @@ -936,20 +936,23 @@ static void do_abort_req_rss(struct cxgbi_device *cdev, struct sk_buff *skb) cxgbi_sock_get(csk); spin_lock_bh(&csk->lock); - if (!cxgbi_sock_flag(csk, CTPF_ABORT_REQ_RCVD)) { - cxgbi_sock_set_flag(csk, CTPF_ABORT_REQ_RCVD); - cxgbi_sock_set_state(csk, CTP_ABORTING); - goto done; + cxgbi_sock_clear_flag(csk, CTPF_ABORT_REQ_RCVD); + + if (!cxgbi_sock_flag(csk, CTPF_TX_DATA_SENT)) { + send_tx_flowc_wr(csk); + cxgbi_sock_set_flag(csk, CTPF_TX_DATA_SENT); } - cxgbi_sock_clear_flag(csk, CTPF_ABORT_REQ_RCVD); + cxgbi_sock_set_flag(csk, CTPF_ABORT_REQ_RCVD); + cxgbi_sock_set_state(csk, CTP_ABORTING); + send_abort_rpl(csk, rst_status); if (!cxgbi_sock_flag(csk, CTPF_ABORT_RPL_PENDING)) { csk->err = abort_status_to_errno(csk, req->status, &rst_status); cxgbi_sock_closed(csk); } -done: + spin_unlock_bh(&csk->lock); cxgbi_sock_put(csk); rel_skb: diff --git a/drivers/scsi/cxgbi/libcxgbi.c b/drivers/scsi/cxgbi/libcxgbi.c index 674d498b46ab..13d869a92248 100644 --- a/drivers/scsi/cxgbi/libcxgbi.c +++ b/drivers/scsi/cxgbi/libcxgbi.c @@ -905,18 +905,16 @@ void cxgbi_sock_rcv_abort_rpl(struct cxgbi_sock *csk) { cxgbi_sock_get(csk); spin_lock_bh(&csk->lock); + + cxgbi_sock_set_flag(csk, CTPF_ABORT_RPL_RCVD); if (cxgbi_sock_flag(csk, CTPF_ABORT_RPL_PENDING)) { - if (!cxgbi_sock_flag(csk, CTPF_ABORT_RPL_RCVD)) - cxgbi_sock_set_flag(csk, CTPF_ABORT_RPL_RCVD); - else { - cxgbi_sock_clear_flag(csk, CTPF_ABORT_RPL_RCVD); - cxgbi_sock_clear_flag(csk, CTPF_ABORT_RPL_PENDING); - if (cxgbi_sock_flag(csk, CTPF_ABORT_REQ_RCVD)) - pr_err("csk 0x%p,%u,0x%lx,%u,ABT_RPL_RSS.\n", - csk, csk->state, csk->flags, csk->tid); - cxgbi_sock_closed(csk); - } + cxgbi_sock_clear_flag(csk, CTPF_ABORT_RPL_PENDING); + if (cxgbi_sock_flag(csk, CTPF_ABORT_REQ_RCVD)) + pr_err("csk 0x%p,%u,0x%lx,%u,ABT_RPL_RSS.\n", + csk, csk->state, csk->flags, csk->tid); + cxgbi_sock_closed(csk); } + spin_unlock_bh(&csk->lock); cxgbi_sock_put(csk); } From c12de882e7765585ae3a2ae22aa569285951613a Mon Sep 17 00:00:00 2001 From: Jiang Liu Date: Mon, 3 Nov 2014 20:44:20 +0800 Subject: [PATCH 250/371] megaraid_sas: fix bug in handling return value of pci_enable_msix_range() Function pci_enable_msix_range() may return negative values for error conditions. So it's a bug by checking (pci_enable_msix_range() != 0) for success and causes failure to megaraid driver when MSI is disabled. [ 16.487267] megaraid_sas 0000:02:00.0: Controller type: iMR [ 16.487275] genirq: Flags mismatch irq 0. 00000000 (megasas) vs. 00015a00 (tii mer) [ 16.487347] megasas: Failed to register IRQ for vector 0. Fixes: 8ae80ed1734b "megaraid: Use pci_enable_msix_range() instead of pci_enable_msix()" Signed-off-by: Jiang Liu Acked-by: Sumit Saxena Signed-off-by: Christoph Hellwig Cc: # 3.17 --- drivers/scsi/megaraid/megaraid_sas_base.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/scsi/megaraid/megaraid_sas_base.c b/drivers/scsi/megaraid/megaraid_sas_base.c index f6a69a3b1b3f..5640ad1c8214 100644 --- a/drivers/scsi/megaraid/megaraid_sas_base.c +++ b/drivers/scsi/megaraid/megaraid_sas_base.c @@ -4453,7 +4453,7 @@ static int megasas_init_fw(struct megasas_instance *instance) instance->msixentry[i].entry = i; i = pci_enable_msix_range(instance->pdev, instance->msixentry, 1, instance->msix_vectors); - if (i) + if (i > 0) instance->msix_vectors = i; else instance->msix_vectors = 0; From dc6311dd2a8fb9a65c1b5b94abec97bdd94cfae6 Mon Sep 17 00:00:00 2001 From: Maurizio Lombardi Date: Fri, 7 Nov 2014 12:55:39 +0100 Subject: [PATCH 251/371] bnx2fc: fix tgt spinlock locking bnx2fc_queuecommand(): when allocating a new io_req, the tgt_lock spinlock must be locked before calling bnx2fc_cmd_alloc(). The spinlock should also be kept locked until bnx2fc_post_io_req() has been completed. If not, a kernel thread may call bnx2fc_process_cq_compl() that extracts the newly allocated io_req from hba->cmd_mgr->cmds and destroys it while it is still being used by bnx2fc_post_io_req(). BUG: unable to handle kernel NULL pointer dereference at 000000000000004c IP: [] bnx2fc_init_task+0x6a/0x230 [bnx2fc] PGD 0 Oops: 0000 [#1] SMP last sysfs file: /sys/devices/pci0000:00/0000:00:02.0/0000:04:00.3/net/eth3/type CPU 33 Modules linked in: autofs4 target_core_iblock target_core_file target_core_pscsi target_core_mod configfs bnx2fc cnic uio fcoe libfcoe libfc scsi_transport_fc 8021q garp scsi_tgt stp llc cpufreq_ondemand freq_table pcc_cpufreq ipt_REJECT nf_conntrack_ipv4 nf_defrag_ipv4 iptable_filter ip_tables ip6t_REJECT nf_conntrack_ipv6 nf_defrag_ipv6 xt_state nf_conntrack ip6table_filter ip6_tables ipv6 power_meter microcode iTCO_wdt iTCO_vendor_support hpilo hpwdt sg bnx2x libcrc32c mdio serio_raw lpc_ich mfd_core shpchp ext4 jbd2 mbcache sd_mod crc_t10dif hpsa video output dm_mirror dm_region_hash dm_log dm_mod [last unloaded: scsi_wait_scan] Pid: 7355, comm: bnx2fc_thread/3 Not tainted 2.6.32-431.el6.x86_64 #1 HP ProLiant BL460c Gen8 RIP: 0010:[] [] bnx2fc_init_task+0x6a/0x230 [bnx2fc] RSP: 0018:ffff8820b0da3b68 EFLAGS: 00010246 RAX: 0000000000000000 RBX: ffff882003801080 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff882003801100 RBP: ffff8820b0da3bc8 R08: ffffffff8160d4e8 R09: 0000000000000040 R10: 0000000000000000 R11: 0000000000000000 R12: ffff88400e600e00 R13: ffff8840108fbe40 R14: ffff88200ffe5400 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8820b0da0000(0000) knlGS:0000000000000000 CS: 0010 DS: 0018 ES: 0018 CR0: 000000008005003b CR2: 000000000000004c CR3: 0000002010b67000 CR4: 00000000001407e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Process bnx2fc_thread/3 (pid: 7355, threadinfo ffff88401f940000, task ffff884012f5f540) Stack: ffff8820b0da3bc8 ffffffff81527303 ffff884000000020 ffff8820b0da3bd8 ffff8820b0da3b98 000000028138931a ffff88400f506078 ffff88400e600e00 ffff88200ffe5400 ffff88200ffe5590 0000000000000021 0000000000000002 Call Trace: [] ? printk+0x41/0x46 [] bnx2fc_post_io_req+0x11c/0x440 [bnx2fc] [] ? cpumask_next_and+0x29/0x50 [] ? scsi_done+0x0/0x60 [] bnx2fc_queuecommand+0x117/0x140 [bnx2fc] [] scsi_dispatch_cmd+0xe5/0x310 [] scsi_request_fn+0x5ee/0x7a0 [] __blk_run_queue+0x31/0x40 [] blk_run_queue+0x30/0x50 [] scsi_run_queue+0xc6/0x270 [] ? elv_requeue_request+0x52/0xa0 [] scsi_requeue_command+0x90/0xb0 [] scsi_io_completion+0x154/0x6c0 [] scsi_finish_command+0xc2/0x130 [] scsi_softirq_done+0x145/0x170 [] blk_done_softirq+0x85/0xa0 [] __do_softirq+0xc1/0x1e0 [] ? call_softirq+0x1c/0x30 [] call_softirq+0x1c/0x30 [] ? do_softirq+0x65/0xa0 [] local_bh_enable_ip+0x9a/0xb0 [] _spin_unlock_bh+0x1b/0x20 [] bnx2fc_process_cq_compl+0x257/0x2b0 [bnx2fc] [] bnx2fc_percpu_io_thread+0xea/0x160 [bnx2fc] [] ? bnx2fc_percpu_io_thread+0x0/0x160 [bnx2fc] [] kthread+0x96/0xa0 [] child_rip+0xa/0x20 [] ? kthread+0x0/0xa0 [] ? child_rip+0x0/0x20 Code: 89 df 45 8b 7e 30 0f 85 75 01 00 00 89 d1 31 c0 c1 e9 03 83 e2 04 89 c9 f3 48 ab 74 06 c7 07 00 00 00 00 49 89 9c 24 88 01 00 00 <83> 7e 4c 01 b8 01 00 00 00 0f 84 e7 00 00 00 89 c2 0a 53 38 41 RIP [] bnx2fc_init_task+0x6a/0x230 [bnx2fc] RSP CR2: 000000000000004c Signed-off-by: Maurizio Lombardi Acked-by: Chad Dupuis Signed-off-by: Christoph Hellwig --- drivers/scsi/bnx2fc/bnx2fc_els.c | 2 -- drivers/scsi/bnx2fc/bnx2fc_io.c | 19 ++++++++++--------- 2 files changed, 10 insertions(+), 11 deletions(-) diff --git a/drivers/scsi/bnx2fc/bnx2fc_els.c b/drivers/scsi/bnx2fc/bnx2fc_els.c index ca75c7ca2559..ef355c13ccc4 100644 --- a/drivers/scsi/bnx2fc/bnx2fc_els.c +++ b/drivers/scsi/bnx2fc/bnx2fc_els.c @@ -480,9 +480,7 @@ void bnx2fc_rec_compl(struct bnx2fc_els_cb_arg *cb_arg) bnx2fc_initiate_cleanup(orig_io_req); /* Post a new IO req with the same sc_cmd */ BNX2FC_IO_DBG(rec_req, "Post IO request again\n"); - spin_unlock_bh(&tgt->tgt_lock); rc = bnx2fc_post_io_req(tgt, new_io_req); - spin_lock_bh(&tgt->tgt_lock); if (!rc) goto free_frame; BNX2FC_IO_DBG(rec_req, "REC: io post err\n"); diff --git a/drivers/scsi/bnx2fc/bnx2fc_io.c b/drivers/scsi/bnx2fc/bnx2fc_io.c index 0679782d9d15..5b99844ef6bf 100644 --- a/drivers/scsi/bnx2fc/bnx2fc_io.c +++ b/drivers/scsi/bnx2fc/bnx2fc_io.c @@ -1894,18 +1894,24 @@ int bnx2fc_queuecommand(struct Scsi_Host *host, goto exit_qcmd; } } + + spin_lock_bh(&tgt->tgt_lock); + io_req = bnx2fc_cmd_alloc(tgt); if (!io_req) { rc = SCSI_MLQUEUE_HOST_BUSY; - goto exit_qcmd; + goto exit_qcmd_tgtlock; } io_req->sc_cmd = sc_cmd; if (bnx2fc_post_io_req(tgt, io_req)) { printk(KERN_ERR PFX "Unable to post io_req\n"); rc = SCSI_MLQUEUE_HOST_BUSY; - goto exit_qcmd; + goto exit_qcmd_tgtlock; } + +exit_qcmd_tgtlock: + spin_unlock_bh(&tgt->tgt_lock); exit_qcmd: return rc; } @@ -2020,6 +2026,8 @@ int bnx2fc_post_io_req(struct bnx2fc_rport *tgt, int task_idx, index; u16 xid; + /* bnx2fc_post_io_req() is called with the tgt_lock held */ + /* Initialize rest of io_req fields */ io_req->cmd_type = BNX2FC_SCSI_CMD; io_req->port = port; @@ -2047,9 +2055,7 @@ int bnx2fc_post_io_req(struct bnx2fc_rport *tgt, /* Build buffer descriptor list for firmware from sg list */ if (bnx2fc_build_bd_list_from_sg(io_req)) { printk(KERN_ERR PFX "BD list creation failed\n"); - spin_lock_bh(&tgt->tgt_lock); kref_put(&io_req->refcount, bnx2fc_cmd_release); - spin_unlock_bh(&tgt->tgt_lock); return -EAGAIN; } @@ -2061,19 +2067,15 @@ int bnx2fc_post_io_req(struct bnx2fc_rport *tgt, task = &(task_page[index]); bnx2fc_init_task(io_req, task); - spin_lock_bh(&tgt->tgt_lock); - if (tgt->flush_in_prog) { printk(KERN_ERR PFX "Flush in progress..Host Busy\n"); kref_put(&io_req->refcount, bnx2fc_cmd_release); - spin_unlock_bh(&tgt->tgt_lock); return -EAGAIN; } if (!test_bit(BNX2FC_FLAG_SESSION_READY, &tgt->flags)) { printk(KERN_ERR PFX "Session not ready...post_io\n"); kref_put(&io_req->refcount, bnx2fc_cmd_release); - spin_unlock_bh(&tgt->tgt_lock); return -EAGAIN; } @@ -2091,6 +2093,5 @@ int bnx2fc_post_io_req(struct bnx2fc_rport *tgt, /* Ring doorbell */ bnx2fc_ring_doorbell(tgt); - spin_unlock_bh(&tgt->tgt_lock); return 0; } From 871c3cf4ea7d5baf58e0a40bce7431ca5525aa2a Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Sat, 4 Oct 2014 16:02:27 +0200 Subject: [PATCH 252/371] mfd: stmpe: Fix STMPE24xx GPMR LSB The least significat byte of the GPIO value read register on the STMPE24xx series is on addres 0xA4 not 0xA5. Correct against datasheet and tested on the STMPE2401 hardware. Signed-off-by: Linus Walleij Signed-off-by: Lee Jones --- drivers/mfd/stmpe.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/mfd/stmpe.h b/drivers/mfd/stmpe.h index 2d045f26f193..bee0abf82040 100644 --- a/drivers/mfd/stmpe.h +++ b/drivers/mfd/stmpe.h @@ -269,7 +269,7 @@ int stmpe_remove(struct stmpe *stmpe); #define STMPE24XX_REG_CHIP_ID 0x80 #define STMPE24XX_REG_IEGPIOR_LSB 0x18 #define STMPE24XX_REG_ISGPIOR_MSB 0x19 -#define STMPE24XX_REG_GPMR_LSB 0xA5 +#define STMPE24XX_REG_GPMR_LSB 0xA4 #define STMPE24XX_REG_GPSR_LSB 0x85 #define STMPE24XX_REG_GPCR_LSB 0x88 #define STMPE24XX_REG_GPDR_LSB 0x8B From 451be648064064c3edbc532b4a3469d2d018ff5c Mon Sep 17 00:00:00 2001 From: Thierry Reding Date: Thu, 2 Oct 2014 09:25:17 +0200 Subject: [PATCH 253/371] mfd: rtsx: Fix build warnings for !PM rtsx_pci_power_off() is called only from rtsx_pci_suspend(), which isn't built when PM is disabled. Signed-off-by: Thierry Reding Signed-off-by: Lee Jones --- drivers/mfd/rtsx_pcr.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/mfd/rtsx_pcr.c b/drivers/mfd/rtsx_pcr.c index f2643c221d34..30f7ca89a0e6 100644 --- a/drivers/mfd/rtsx_pcr.c +++ b/drivers/mfd/rtsx_pcr.c @@ -947,6 +947,7 @@ static void rtsx_pci_idle_work(struct work_struct *work) mutex_unlock(&pcr->pcr_mutex); } +#ifdef CONFIG_PM static void rtsx_pci_power_off(struct rtsx_pcr *pcr, u8 pm_state) { if (pcr->ops->turn_off_led) @@ -961,6 +962,7 @@ static void rtsx_pci_power_off(struct rtsx_pcr *pcr, u8 pm_state) if (pcr->ops->force_power_down) pcr->ops->force_power_down(pcr, pm_state); } +#endif static int rtsx_pci_init_hw(struct rtsx_pcr *pcr) { From b6684228726cc25551a43f5c0bd9c5f977f10f48 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Fri, 26 Sep 2014 12:55:28 +0200 Subject: [PATCH 254/371] mfd: viperboard: Fix platform-device id collision Allow more than one viperboard to be connected by registering with PLATFORM_DEVID_AUTO instead of PLATFORM_DEVID_NONE. The subdevices are currently registered with PLATFORM_DEVID_NONE, which will cause a name collision on the platform bus when a second viperboard is plugged in: viperboard 1-2.4:1.0: version 0.00 found at bus 001 address 004 ------------[ cut here ]------------ WARNING: CPU: 0 PID: 181 at /home/johan/work/omicron/src/linux/fs/sysfs/dir.c:31 sysfs_warn_dup+0x74/0x84() sysfs: cannot create duplicate filename '/bus/platform/devices/viperboard-gpio' Modules linked in: i2c_viperboard viperboard netconsole [last unloaded: viperboard] CPU: 0 PID: 181 Comm: bash Tainted: G W 3.17.0-rc6 #1 [] (unwind_backtrace) from [] (show_stack+0x20/0x24) [] (show_stack) from [] (dump_stack+0x24/0x28) [] (dump_stack) from [] (warn_slowpath_common+0x80/0x98) [] (warn_slowpath_common) from [] (warn_slowpath_fmt+0x40/0x48) [] (warn_slowpath_fmt) from [] (sysfs_warn_dup+0x74/0x84) [] (sysfs_warn_dup) from [] (sysfs_do_create_link_sd.isra.2+0xcc/0xd0) [] (sysfs_do_create_link_sd.isra.2) from [] (sysfs_create_link+0x3c/0x48) [] (sysfs_create_link) from [] (bus_add_device+0x12c/0x1e0) [] (bus_add_device) from [] (device_add+0x410/0x584) [] (device_add) from [] (platform_device_add+0xd8/0x26c) [] (platform_device_add) from [] (mfd_add_device+0x240/0x344) [] (mfd_add_device) from [] (mfd_add_devices+0xb8/0x110) [] (mfd_add_devices) from [] (vprbrd_probe+0x160/0x1b0 [viperboard]) [] (vprbrd_probe [viperboard]) from [] (usb_probe_interface+0x1bc/0x2a8) [] (usb_probe_interface) from [] (driver_probe_device+0x14c/0x3ac) [] (driver_probe_device) from [] (__driver_attach+0xa4/0xa8) [] (__driver_attach) from [] (bus_for_each_dev+0x70/0xa4) [] (bus_for_each_dev) from [] (driver_attach+0x2c/0x30) [] (driver_attach) from [] (usb_store_new_id+0x170/0x1ac) [] (usb_store_new_id) from [] (new_id_store+0x34/0x3c) [] (new_id_store) from [] (drv_attr_store+0x30/0x3c) [] (drv_attr_store) from [] (sysfs_kf_write+0x5c/0x60) [] (sysfs_kf_write) from [] (kernfs_fop_write+0xd4/0x194) [] (kernfs_fop_write) from [] (vfs_write+0xb4/0x1c0) [] (vfs_write) from [] (SyS_write+0x4c/0xa0) [] (SyS_write) from [] (ret_fast_syscall+0x0/0x48) ---[ end trace 98e8603c22d65817 ]--- viperboard 1-2.4:1.0: Failed to add mfd devices to core. viperboard: probe of 1-2.4:1.0 failed with error -17 Signed-off-by: Johan Hovold Signed-off-by: Lee Jones --- drivers/mfd/viperboard.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/mfd/viperboard.c b/drivers/mfd/viperboard.c index e00f5340ed87..3c2b8f9e3c84 100644 --- a/drivers/mfd/viperboard.c +++ b/drivers/mfd/viperboard.c @@ -93,8 +93,9 @@ static int vprbrd_probe(struct usb_interface *interface, version >> 8, version & 0xff, vb->usb_dev->bus->busnum, vb->usb_dev->devnum); - ret = mfd_add_devices(&interface->dev, -1, vprbrd_devs, - ARRAY_SIZE(vprbrd_devs), NULL, 0, NULL); + ret = mfd_add_devices(&interface->dev, PLATFORM_DEVID_AUTO, + vprbrd_devs, ARRAY_SIZE(vprbrd_devs), NULL, 0, + NULL); if (ret != 0) { dev_err(&interface->dev, "Failed to add mfd devices to core."); goto error; From 43fc9396cac3f7498e07a22e6a987b911462fa58 Mon Sep 17 00:00:00 2001 From: Krzysztof Kozlowski Date: Fri, 10 Oct 2014 10:22:01 +0200 Subject: [PATCH 255/371] mfd: max77693: Use proper regmap for handling MUIC interrupts Interrupts coming from Maxim77693 MUIC block (MicroUSB Interface Controller) were not handled at all because wrong regmap was used for MUIC's regmap_irq_chip. The MUIC component of Maxim 77693 uses different I2C address thus second regmap is created and used by max77693 extcon driver. The registers for MUIC interrupts are also in that block and should be handled by that second regmap. However the regmap irq chip for MUIC was configured with default regmap which could not read MUIC registers. Fixes: 342d669c1ee4 ("mfd: max77693: Handle IRQs using regmap") Cc: Signed-off-by: Krzysztof Kozlowski Reviewed-by: Chanwoo Choi Signed-off-by: Lee Jones --- drivers/mfd/max77693.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/mfd/max77693.c b/drivers/mfd/max77693.c index cf008f45968c..22d23fcbb65c 100644 --- a/drivers/mfd/max77693.c +++ b/drivers/mfd/max77693.c @@ -240,7 +240,7 @@ static int max77693_i2c_probe(struct i2c_client *i2c, goto err_irq_charger; } - ret = regmap_add_irq_chip(max77693->regmap, max77693->irq, + ret = regmap_add_irq_chip(max77693->regmap_muic, max77693->irq, IRQF_ONESHOT | IRQF_SHARED | IRQF_TRIGGER_FALLING, 0, &max77693_muic_irq_chip, From c0acb8144bd6d8d88aee1dab33364b7353e9a903 Mon Sep 17 00:00:00 2001 From: Krzysztof Kozlowski Date: Fri, 10 Oct 2014 12:48:35 +0200 Subject: [PATCH 256/371] mfd: max77693: Fix always masked MUIC interrupts All interrupts coming from MUIC were ignored because interrupt source register was masked. The Maxim 77693 has a "interrupt source" - a separate register and interrupts which give information about PMIC block triggering the individual interrupt (charger, topsys, MUIC, flash LED). By default bootloader could initialize this register to "mask all" value. In such case (observed on Trats2 board) MUIC interrupts won't be generated regardless of their mask status. Regmap irq chip was unmasking individual MUIC interrupts but the source was masked Before introducing regmap irq chip this interrupt source was unmasked, read and acked. Reading and acking is not necessary but unmasking is. Fixes: 342d669c1ee4 ("mfd: max77693: Handle IRQs using regmap") Cc: Signed-off-by: Krzysztof Kozlowski Reviewed-by: Chanwoo Choi Signed-off-by: Lee Jones --- drivers/mfd/max77693.c | 12 ++++++++++++ include/linux/mfd/max77693-private.h | 7 +++++++ 2 files changed, 19 insertions(+) diff --git a/drivers/mfd/max77693.c b/drivers/mfd/max77693.c index 22d23fcbb65c..711773e8e64b 100644 --- a/drivers/mfd/max77693.c +++ b/drivers/mfd/max77693.c @@ -250,6 +250,17 @@ static int max77693_i2c_probe(struct i2c_client *i2c, goto err_irq_muic; } + /* Unmask interrupts from all blocks in interrupt source register */ + ret = regmap_update_bits(max77693->regmap, + MAX77693_PMIC_REG_INTSRC_MASK, + SRC_IRQ_ALL, (unsigned int)~SRC_IRQ_ALL); + if (ret < 0) { + dev_err(max77693->dev, + "Could not unmask interrupts in INTSRC: %d\n", + ret); + goto err_intsrc; + } + pm_runtime_set_active(max77693->dev); ret = mfd_add_devices(max77693->dev, -1, max77693_devs, @@ -261,6 +272,7 @@ static int max77693_i2c_probe(struct i2c_client *i2c, err_mfd: mfd_remove_devices(max77693->dev); +err_intsrc: regmap_del_irq_chip(max77693->irq, max77693->irq_data_muic); err_irq_muic: regmap_del_irq_chip(max77693->irq, max77693->irq_data_charger); diff --git a/include/linux/mfd/max77693-private.h b/include/linux/mfd/max77693-private.h index fc17d56581b2..582e67f34054 100644 --- a/include/linux/mfd/max77693-private.h +++ b/include/linux/mfd/max77693-private.h @@ -330,6 +330,13 @@ enum max77693_irq_source { MAX77693_IRQ_GROUP_NR, }; +#define SRC_IRQ_CHARGER BIT(0) +#define SRC_IRQ_TOP BIT(1) +#define SRC_IRQ_FLASH BIT(2) +#define SRC_IRQ_MUIC BIT(3) +#define SRC_IRQ_ALL (SRC_IRQ_CHARGER | SRC_IRQ_TOP \ + | SRC_IRQ_FLASH | SRC_IRQ_MUIC) + #define LED_IRQ_FLED2_OPEN BIT(0) #define LED_IRQ_FLED2_SHORT BIT(1) #define LED_IRQ_FLED1_OPEN BIT(2) From 481c7f868c6d855f31a29c69b445ac4aee9625a6 Mon Sep 17 00:00:00 2001 From: Tony Lindgren Date: Sun, 2 Nov 2014 10:07:56 -0800 Subject: [PATCH 257/371] mfd: twl4030-power: Fix poweroff with PM configuration enabled Commit e7cd1d1eb16f ("mfd: twl4030-power: Add generic reset configuration") enabled configuring the PM features for twl4030. This caused poweroff command to fail on devices that have the BCI charger on twl4030 wired, or have power wired for VBUS. Instead of powering off, the device reboots. This is because voltage is detected on charger or VBUS with the default bits enabled for the power transition registers. To fix the issue, let's just clear VBUS and CHG bits as we want poweroff command to keep the system powered off. Fixes: e7cd1d1eb16f ("mfd: twl4030-power: Add generic reset configuration") Cc: stable@vger.kernel.org # v3.16+ Reported-by: Russell King Signed-off-by: Tony Lindgren Signed-off-by: Lee Jones --- drivers/mfd/twl4030-power.c | 52 +++++++++++++++++++++++++++++++++++++ 1 file changed, 52 insertions(+) diff --git a/drivers/mfd/twl4030-power.c b/drivers/mfd/twl4030-power.c index cf92a6d1c532..50f9091bcd38 100644 --- a/drivers/mfd/twl4030-power.c +++ b/drivers/mfd/twl4030-power.c @@ -44,6 +44,15 @@ static u8 twl4030_start_script_address = 0x2b; #define PWR_DEVSLP BIT(1) #define PWR_DEVOFF BIT(0) +/* Register bits for CFG_P1_TRANSITION (also for P2 and P3) */ +#define STARTON_SWBUG BIT(7) /* Start on watchdog */ +#define STARTON_VBUS BIT(5) /* Start on VBUS */ +#define STARTON_VBAT BIT(4) /* Start on battery insert */ +#define STARTON_RTC BIT(3) /* Start on RTC */ +#define STARTON_USB BIT(2) /* Start on USB host */ +#define STARTON_CHG BIT(1) /* Start on charger */ +#define STARTON_PWON BIT(0) /* Start on PWRON button */ + #define SEQ_OFFSYNC (1 << 0) #define PHY_TO_OFF_PM_MASTER(p) (p - 0x36) @@ -606,6 +615,44 @@ twl4030_power_configure_resources(const struct twl4030_power_data *pdata) return 0; } +static int twl4030_starton_mask_and_set(u8 bitmask, u8 bitvalues) +{ + u8 regs[3] = { TWL4030_PM_MASTER_CFG_P1_TRANSITION, + TWL4030_PM_MASTER_CFG_P2_TRANSITION, + TWL4030_PM_MASTER_CFG_P3_TRANSITION, }; + u8 val; + int i, err; + + err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, TWL4030_PM_MASTER_KEY_CFG1, + TWL4030_PM_MASTER_PROTECT_KEY); + if (err) + goto relock; + err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, + TWL4030_PM_MASTER_KEY_CFG2, + TWL4030_PM_MASTER_PROTECT_KEY); + if (err) + goto relock; + + for (i = 0; i < sizeof(regs); i++) { + err = twl_i2c_read_u8(TWL_MODULE_PM_MASTER, + &val, regs[i]); + if (err) + break; + val = (~bitmask & val) | (bitmask & bitvalues); + err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, + val, regs[i]); + if (err) + break; + } + + if (err) + pr_err("TWL4030 Register access failed: %i\n", err); + +relock: + return twl_i2c_write_u8(TWL_MODULE_PM_MASTER, 0, + TWL4030_PM_MASTER_PROTECT_KEY); +} + /* * In master mode, start the power off sequence. * After a successful execution, TWL shuts down the power to the SoC @@ -615,6 +662,11 @@ void twl4030_power_off(void) { int err; + /* Disable start on charger or VBUS as it can break poweroff */ + err = twl4030_starton_mask_and_set(STARTON_VBUS | STARTON_CHG, 0); + if (err) + pr_err("TWL4030 Unable to configure start-up\n"); + err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, PWR_DEVOFF, TWL4030_PM_MASTER_P1_SW_EVENTS); if (err) From 65f6ecc93e7cca888a96a68cf6b5292dff1982b6 Mon Sep 17 00:00:00 2001 From: Hariprasad Shenai Date: Fri, 7 Nov 2014 17:06:29 +0530 Subject: [PATCH 258/371] cxgb4vf: Move fl_starv_thres into adapter->sge data structure Move fl_starv_thres into adapter->sge data structure since it _could_ be different from adapter to adapter. Also move other per-adapter SGE values which had been treated as driver globals into adapter->sge. Based on original work by Casey Leedom Signed-off-by: Hariprasad Shenai Signed-off-by: David S. Miller --- .../net/ethernet/chelsio/cxgb4vf/adapter.h | 8 ++ drivers/net/ethernet/chelsio/cxgb4vf/sge.c | 93 +++++++++++-------- 2 files changed, 61 insertions(+), 40 deletions(-) diff --git a/drivers/net/ethernet/chelsio/cxgb4vf/adapter.h b/drivers/net/ethernet/chelsio/cxgb4vf/adapter.h index 68eaa9c88c7d..3d06e77d7121 100644 --- a/drivers/net/ethernet/chelsio/cxgb4vf/adapter.h +++ b/drivers/net/ethernet/chelsio/cxgb4vf/adapter.h @@ -299,6 +299,14 @@ struct sge { u16 timer_val[SGE_NTIMERS]; /* interrupt holdoff timer array */ u8 counter_val[SGE_NCOUNTERS]; /* interrupt RX threshold array */ + /* Decoded Adapter Parameters. + */ + u32 fl_pg_order; /* large page allocation size */ + u32 stat_len; /* length of status page at ring end */ + u32 pktshift; /* padding between CPL & packet data */ + u32 fl_align; /* response queue message alignment */ + u32 fl_starve_thres; /* Free List starvation threshold */ + /* * Reverse maps from Absolute Queue IDs to associated queue pointers. * The absolute Queue IDs are in a compact range which start at a diff --git a/drivers/net/ethernet/chelsio/cxgb4vf/sge.c b/drivers/net/ethernet/chelsio/cxgb4vf/sge.c index 85036e6b42c4..a18830d8aa6d 100644 --- a/drivers/net/ethernet/chelsio/cxgb4vf/sge.c +++ b/drivers/net/ethernet/chelsio/cxgb4vf/sge.c @@ -50,14 +50,6 @@ #include "../cxgb4/t4fw_api.h" #include "../cxgb4/t4_msg.h" -/* - * Decoded Adapter Parameters. - */ -static u32 FL_PG_ORDER; /* large page allocation size */ -static u32 STAT_LEN; /* length of status page at ring end */ -static u32 PKTSHIFT; /* padding between CPL and packet data */ -static u32 FL_ALIGN; /* response queue message alignment */ - /* * Constants ... */ @@ -264,15 +256,19 @@ static inline unsigned int fl_cap(const struct sge_fl *fl) /** * fl_starving - return whether a Free List is starving. + * @adapter: pointer to the adapter * @fl: the Free List * * Tests specified Free List to see whether the number of buffers * available to the hardware has falled below our "starvation" * threshold. */ -static inline bool fl_starving(const struct sge_fl *fl) +static inline bool fl_starving(const struct adapter *adapter, + const struct sge_fl *fl) { - return fl->avail - fl->pend_cred <= FL_STARVE_THRES; + const struct sge *s = &adapter->sge; + + return fl->avail - fl->pend_cred <= s->fl_starve_thres; } /** @@ -457,13 +453,16 @@ static inline void reclaim_completed_tx(struct adapter *adapter, /** * get_buf_size - return the size of an RX Free List buffer. + * @adapter: pointer to the associated adapter * @sdesc: pointer to the software buffer descriptor */ -static inline int get_buf_size(const struct rx_sw_desc *sdesc) +static inline int get_buf_size(const struct adapter *adapter, + const struct rx_sw_desc *sdesc) { - return FL_PG_ORDER > 0 && (sdesc->dma_addr & RX_LARGE_BUF) - ? (PAGE_SIZE << FL_PG_ORDER) - : PAGE_SIZE; + const struct sge *s = &adapter->sge; + + return (s->fl_pg_order > 0 && (sdesc->dma_addr & RX_LARGE_BUF) + ? (PAGE_SIZE << s->fl_pg_order) : PAGE_SIZE); } /** @@ -483,7 +482,8 @@ static void free_rx_bufs(struct adapter *adapter, struct sge_fl *fl, int n) if (is_buf_mapped(sdesc)) dma_unmap_page(adapter->pdev_dev, get_buf_addr(sdesc), - get_buf_size(sdesc), PCI_DMA_FROMDEVICE); + get_buf_size(adapter, sdesc), + PCI_DMA_FROMDEVICE); put_page(sdesc->page); sdesc->page = NULL; if (++fl->cidx == fl->size) @@ -511,7 +511,8 @@ static void unmap_rx_buf(struct adapter *adapter, struct sge_fl *fl) if (is_buf_mapped(sdesc)) dma_unmap_page(adapter->pdev_dev, get_buf_addr(sdesc), - get_buf_size(sdesc), PCI_DMA_FROMDEVICE); + get_buf_size(adapter, sdesc), + PCI_DMA_FROMDEVICE); sdesc->page = NULL; if (++fl->cidx == fl->size) fl->cidx = 0; @@ -589,6 +590,7 @@ static inline void poison_buf(struct page *page, size_t sz) static unsigned int refill_fl(struct adapter *adapter, struct sge_fl *fl, int n, gfp_t gfp) { + struct sge *s = &adapter->sge; struct page *page; dma_addr_t dma_addr; unsigned int cred = fl->avail; @@ -608,12 +610,12 @@ static unsigned int refill_fl(struct adapter *adapter, struct sge_fl *fl, * If we don't support large pages, drop directly into the small page * allocation code. */ - if (FL_PG_ORDER == 0) + if (s->fl_pg_order == 0) goto alloc_small_pages; while (n) { page = alloc_pages(gfp | __GFP_COMP | __GFP_NOWARN, - FL_PG_ORDER); + s->fl_pg_order); if (unlikely(!page)) { /* * We've failed inour attempt to allocate a "large @@ -623,10 +625,10 @@ static unsigned int refill_fl(struct adapter *adapter, struct sge_fl *fl, fl->large_alloc_failed++; break; } - poison_buf(page, PAGE_SIZE << FL_PG_ORDER); + poison_buf(page, PAGE_SIZE << s->fl_pg_order); dma_addr = dma_map_page(adapter->pdev_dev, page, 0, - PAGE_SIZE << FL_PG_ORDER, + PAGE_SIZE << s->fl_pg_order, PCI_DMA_FROMDEVICE); if (unlikely(dma_mapping_error(adapter->pdev_dev, dma_addr))) { /* @@ -637,7 +639,7 @@ static unsigned int refill_fl(struct adapter *adapter, struct sge_fl *fl, * because DMA mapping resources are typically * critical resources once they become scarse. */ - __free_pages(page, FL_PG_ORDER); + __free_pages(page, s->fl_pg_order); goto out; } dma_addr |= RX_LARGE_BUF; @@ -693,7 +695,7 @@ out: fl->pend_cred += cred; ring_fl_db(adapter, fl); - if (unlikely(fl_starving(fl))) { + if (unlikely(fl_starving(adapter, fl))) { smp_wmb(); set_bit(fl->cntxt_id, adapter->sge.starving_fl); } @@ -1468,6 +1470,8 @@ static void t4vf_pktgl_free(const struct pkt_gl *gl) static void do_gro(struct sge_eth_rxq *rxq, const struct pkt_gl *gl, const struct cpl_rx_pkt *pkt) { + struct adapter *adapter = rxq->rspq.adapter; + struct sge *s = &adapter->sge; int ret; struct sk_buff *skb; @@ -1478,8 +1482,8 @@ static void do_gro(struct sge_eth_rxq *rxq, const struct pkt_gl *gl, return; } - copy_frags(skb, gl, PKTSHIFT); - skb->len = gl->tot_len - PKTSHIFT; + copy_frags(skb, gl, s->pktshift); + skb->len = gl->tot_len - s->pktshift; skb->data_len = skb->len; skb->truesize += skb->data_len; skb->ip_summed = CHECKSUM_UNNECESSARY; @@ -1516,6 +1520,8 @@ int t4vf_ethrx_handler(struct sge_rspq *rspq, const __be64 *rsp, bool csum_ok = pkt->csum_calc && !pkt->err_vec && (rspq->netdev->features & NETIF_F_RXCSUM); struct sge_eth_rxq *rxq = container_of(rspq, struct sge_eth_rxq, rspq); + struct adapter *adapter = rspq->adapter; + struct sge *s = &adapter->sge; /* * If this is a good TCP packet and we have Generic Receive Offload @@ -1537,7 +1543,7 @@ int t4vf_ethrx_handler(struct sge_rspq *rspq, const __be64 *rsp, rxq->stats.rx_drops++; return 0; } - __skb_pull(skb, PKTSHIFT); + __skb_pull(skb, s->pktshift); skb->protocol = eth_type_trans(skb, rspq->netdev); skb_record_rx_queue(skb, rspq->idx); rxq->stats.pkts++; @@ -1648,6 +1654,8 @@ static inline void rspq_next(struct sge_rspq *rspq) static int process_responses(struct sge_rspq *rspq, int budget) { struct sge_eth_rxq *rxq = container_of(rspq, struct sge_eth_rxq, rspq); + struct adapter *adapter = rspq->adapter; + struct sge *s = &adapter->sge; int budget_left = budget; while (likely(budget_left)) { @@ -1697,7 +1705,7 @@ static int process_responses(struct sge_rspq *rspq, int budget) BUG_ON(frag >= MAX_SKB_FRAGS); BUG_ON(rxq->fl.avail == 0); sdesc = &rxq->fl.sdesc[rxq->fl.cidx]; - bufsz = get_buf_size(sdesc); + bufsz = get_buf_size(adapter, sdesc); fp->page = sdesc->page; fp->offset = rspq->offset; fp->size = min(bufsz, len); @@ -1726,7 +1734,7 @@ static int process_responses(struct sge_rspq *rspq, int budget) */ ret = rspq->handler(rspq, rspq->cur_desc, &gl); if (likely(ret == 0)) - rspq->offset += ALIGN(fp->size, FL_ALIGN); + rspq->offset += ALIGN(fp->size, s->fl_align); else restore_rx_bufs(&gl, &rxq->fl, frag); } else if (likely(rsp_type == RSP_TYPE_CPL)) { @@ -1963,7 +1971,7 @@ static void sge_rx_timer_cb(unsigned long data) * schedule napi but the FL is no longer starving. * No biggie. */ - if (fl_starving(fl)) { + if (fl_starving(adapter, fl)) { struct sge_eth_rxq *rxq; rxq = container_of(fl, struct sge_eth_rxq, fl); @@ -2047,6 +2055,7 @@ int t4vf_sge_alloc_rxq(struct adapter *adapter, struct sge_rspq *rspq, int intr_dest, struct sge_fl *fl, rspq_handler_t hnd) { + struct sge *s = &adapter->sge; struct port_info *pi = netdev_priv(dev); struct fw_iq_cmd cmd, rpl; int ret, iqandst, flsz = 0; @@ -2117,7 +2126,7 @@ int t4vf_sge_alloc_rxq(struct adapter *adapter, struct sge_rspq *rspq, fl->size = roundup(fl->size, FL_PER_EQ_UNIT); fl->desc = alloc_ring(adapter->pdev_dev, fl->size, sizeof(__be64), sizeof(struct rx_sw_desc), - &fl->addr, &fl->sdesc, STAT_LEN); + &fl->addr, &fl->sdesc, s->stat_len); if (!fl->desc) { ret = -ENOMEM; goto err; @@ -2129,7 +2138,7 @@ int t4vf_sge_alloc_rxq(struct adapter *adapter, struct sge_rspq *rspq, * free list ring) in Egress Queue Units. */ flsz = (fl->size / FL_PER_EQ_UNIT + - STAT_LEN / EQ_UNIT); + s->stat_len / EQ_UNIT); /* * Fill in all the relevant firmware Ingress Queue Command @@ -2217,6 +2226,7 @@ int t4vf_sge_alloc_eth_txq(struct adapter *adapter, struct sge_eth_txq *txq, struct net_device *dev, struct netdev_queue *devq, unsigned int iqid) { + struct sge *s = &adapter->sge; int ret, nentries; struct fw_eq_eth_cmd cmd, rpl; struct port_info *pi = netdev_priv(dev); @@ -2225,7 +2235,7 @@ int t4vf_sge_alloc_eth_txq(struct adapter *adapter, struct sge_eth_txq *txq, * Calculate the size of the hardware TX Queue (including the Status * Page on the end of the TX Queue) in units of TX Descriptors. */ - nentries = txq->q.size + STAT_LEN / sizeof(struct tx_desc); + nentries = txq->q.size + s->stat_len / sizeof(struct tx_desc); /* * Allocate the hardware ring for the TX ring (with space for its @@ -2234,7 +2244,7 @@ int t4vf_sge_alloc_eth_txq(struct adapter *adapter, struct sge_eth_txq *txq, txq->q.desc = alloc_ring(adapter->pdev_dev, txq->q.size, sizeof(struct tx_desc), sizeof(struct tx_sw_desc), - &txq->q.phys_addr, &txq->q.sdesc, STAT_LEN); + &txq->q.phys_addr, &txq->q.sdesc, s->stat_len); if (!txq->q.desc) return -ENOMEM; @@ -2307,8 +2317,10 @@ int t4vf_sge_alloc_eth_txq(struct adapter *adapter, struct sge_eth_txq *txq, */ static void free_txq(struct adapter *adapter, struct sge_txq *tq) { + struct sge *s = &adapter->sge; + dma_free_coherent(adapter->pdev_dev, - tq->size * sizeof(*tq->desc) + STAT_LEN, + tq->size * sizeof(*tq->desc) + s->stat_len, tq->desc, tq->phys_addr); tq->cntxt_id = 0; tq->sdesc = NULL; @@ -2322,6 +2334,7 @@ static void free_txq(struct adapter *adapter, struct sge_txq *tq) static void free_rspq_fl(struct adapter *adapter, struct sge_rspq *rspq, struct sge_fl *fl) { + struct sge *s = &adapter->sge; unsigned int flid = fl ? fl->cntxt_id : 0xffff; t4vf_iq_free(adapter, FW_IQ_TYPE_FL_INT_CAP, @@ -2337,7 +2350,7 @@ static void free_rspq_fl(struct adapter *adapter, struct sge_rspq *rspq, if (fl) { free_rx_bufs(adapter, fl, fl->avail); dma_free_coherent(adapter->pdev_dev, - fl->size * sizeof(*fl->desc) + STAT_LEN, + fl->size * sizeof(*fl->desc) + s->stat_len, fl->desc, fl->addr); kfree(fl->sdesc); fl->sdesc = NULL; @@ -2443,12 +2456,12 @@ int t4vf_sge_init(struct adapter *adapter) * Now translate the adapter parameters into our internal forms. */ if (fl1) - FL_PG_ORDER = ilog2(fl1) - PAGE_SHIFT; - STAT_LEN = ((sge_params->sge_control & EGRSTATUSPAGESIZE_MASK) - ? 128 : 64); - PKTSHIFT = PKTSHIFT_GET(sge_params->sge_control); - FL_ALIGN = 1 << (INGPADBOUNDARY_GET(sge_params->sge_control) + - SGE_INGPADBOUNDARY_SHIFT); + s->fl_pg_order = ilog2(fl1) - PAGE_SHIFT; + s->stat_len = ((sge_params->sge_control & EGRSTATUSPAGESIZE_MASK) + ? 128 : 64); + s->pktshift = PKTSHIFT_GET(sge_params->sge_control); + s->fl_align = 1 << (INGPADBOUNDARY_GET(sge_params->sge_control) + + SGE_INGPADBOUNDARY_SHIFT); /* * Set up tasklet timers. From ce8f407a3cc7fc58804b9135e7c8780f0f8c2a8d Mon Sep 17 00:00:00 2001 From: Hariprasad Shenai Date: Fri, 7 Nov 2014 17:06:30 +0530 Subject: [PATCH 259/371] cxgb4/cxgb4vf: For T5 use Packing and Padding Boundaries for SGE DMA transfers T5 introduces the ability to have separate Packing and Padding Boundaries for SGE DMA transfers from the chip to Host Memory. This change set takes advantage of that to set up a smaller Padding Boundary to conserve PCI Link and Memory Bandwidth with T5. Signed-off-by: Hariprasad Shenai Signed-off-by: David S. Miller --- drivers/net/ethernet/chelsio/cxgb4/sge.c | 30 +++++++++-- drivers/net/ethernet/chelsio/cxgb4/t4_hw.c | 51 ++++++++++++++++--- drivers/net/ethernet/chelsio/cxgb4/t4_regs.h | 10 ++++ drivers/net/ethernet/chelsio/cxgb4vf/sge.c | 31 ++++++++++- .../ethernet/chelsio/cxgb4vf/t4vf_common.h | 1 + .../net/ethernet/chelsio/cxgb4vf/t4vf_hw.c | 23 +++++++++ 6 files changed, 135 insertions(+), 11 deletions(-) diff --git a/drivers/net/ethernet/chelsio/cxgb4/sge.c b/drivers/net/ethernet/chelsio/cxgb4/sge.c index 5e1b314e11af..39f2b13e66c7 100644 --- a/drivers/net/ethernet/chelsio/cxgb4/sge.c +++ b/drivers/net/ethernet/chelsio/cxgb4/sge.c @@ -2914,7 +2914,8 @@ static int t4_sge_init_hard(struct adapter *adap) int t4_sge_init(struct adapter *adap) { struct sge *s = &adap->sge; - u32 sge_control, sge_conm_ctrl; + u32 sge_control, sge_control2, sge_conm_ctrl; + unsigned int ingpadboundary, ingpackboundary; int ret, egress_threshold; /* @@ -2924,8 +2925,31 @@ int t4_sge_init(struct adapter *adap) sge_control = t4_read_reg(adap, SGE_CONTROL); s->pktshift = PKTSHIFT_GET(sge_control); s->stat_len = (sge_control & EGRSTATUSPAGESIZE_MASK) ? 128 : 64; - s->fl_align = 1 << (INGPADBOUNDARY_GET(sge_control) + - X_INGPADBOUNDARY_SHIFT); + + /* T4 uses a single control field to specify both the PCIe Padding and + * Packing Boundary. T5 introduced the ability to specify these + * separately. The actual Ingress Packet Data alignment boundary + * within Packed Buffer Mode is the maximum of these two + * specifications. + */ + ingpadboundary = 1 << (INGPADBOUNDARY_GET(sge_control) + + X_INGPADBOUNDARY_SHIFT); + if (is_t4(adap->params.chip)) { + s->fl_align = ingpadboundary; + } else { + /* T5 has a different interpretation of one of the PCIe Packing + * Boundary values. + */ + sge_control2 = t4_read_reg(adap, SGE_CONTROL2_A); + ingpackboundary = INGPACKBOUNDARY_G(sge_control2); + if (ingpackboundary == INGPACKBOUNDARY_16B_X) + ingpackboundary = 16; + else + ingpackboundary = 1 << (ingpackboundary + + INGPACKBOUNDARY_SHIFT_X); + + s->fl_align = max(ingpadboundary, ingpackboundary); + } if (adap->flags & USING_SOFT_PARAMS) ret = t4_sge_init_soft(adap); diff --git a/drivers/net/ethernet/chelsio/cxgb4/t4_hw.c b/drivers/net/ethernet/chelsio/cxgb4/t4_hw.c index a9d9d74e4f09..163a2a14948c 100644 --- a/drivers/net/ethernet/chelsio/cxgb4/t4_hw.c +++ b/drivers/net/ethernet/chelsio/cxgb4/t4_hw.c @@ -3129,12 +3129,51 @@ int t4_fixup_host_params(struct adapter *adap, unsigned int page_size, HOSTPAGESIZEPF6(sge_hps) | HOSTPAGESIZEPF7(sge_hps)); - t4_set_reg_field(adap, SGE_CONTROL, - INGPADBOUNDARY_MASK | - EGRSTATUSPAGESIZE_MASK, - INGPADBOUNDARY(fl_align_log - 5) | - EGRSTATUSPAGESIZE(stat_len != 64)); - + if (is_t4(adap->params.chip)) { + t4_set_reg_field(adap, SGE_CONTROL, + INGPADBOUNDARY_MASK | + EGRSTATUSPAGESIZE_MASK, + INGPADBOUNDARY(fl_align_log - 5) | + EGRSTATUSPAGESIZE(stat_len != 64)); + } else { + /* T5 introduced the separation of the Free List Padding and + * Packing Boundaries. Thus, we can select a smaller Padding + * Boundary to avoid uselessly chewing up PCIe Link and Memory + * Bandwidth, and use a Packing Boundary which is large enough + * to avoid false sharing between CPUs, etc. + * + * For the PCI Link, the smaller the Padding Boundary the + * better. For the Memory Controller, a smaller Padding + * Boundary is better until we cross under the Memory Line + * Size (the minimum unit of transfer to/from Memory). If we + * have a Padding Boundary which is smaller than the Memory + * Line Size, that'll involve a Read-Modify-Write cycle on the + * Memory Controller which is never good. For T5 the smallest + * Padding Boundary which we can select is 32 bytes which is + * larger than any known Memory Controller Line Size so we'll + * use that. + * + * T5 has a different interpretation of the "0" value for the + * Packing Boundary. This corresponds to 16 bytes instead of + * the expected 32 bytes. We never have a Packing Boundary + * less than 32 bytes so we can't use that special value but + * on the other hand, if we wanted 32 bytes, the best we can + * really do is 64 bytes. + */ + if (fl_align <= 32) { + fl_align = 64; + fl_align_log = 6; + } + t4_set_reg_field(adap, SGE_CONTROL, + INGPADBOUNDARY_MASK | + EGRSTATUSPAGESIZE_MASK, + INGPADBOUNDARY(INGPCIEBOUNDARY_32B_X) | + EGRSTATUSPAGESIZE(stat_len != 64)); + t4_set_reg_field(adap, SGE_CONTROL2_A, + INGPACKBOUNDARY_V(INGPACKBOUNDARY_M), + INGPACKBOUNDARY_V(fl_align_log - + INGPACKBOUNDARY_SHIFT_X)); + } /* * Adjust various SGE Free List Host Buffer Sizes. * diff --git a/drivers/net/ethernet/chelsio/cxgb4/t4_regs.h b/drivers/net/ethernet/chelsio/cxgb4/t4_regs.h index a1024db5dc13..8d2de1006b08 100644 --- a/drivers/net/ethernet/chelsio/cxgb4/t4_regs.h +++ b/drivers/net/ethernet/chelsio/cxgb4/t4_regs.h @@ -95,6 +95,7 @@ #define X_INGPADBOUNDARY_SHIFT 5 #define SGE_CONTROL 0x1008 +#define SGE_CONTROL2_A 0x1124 #define DCASYSTYPE 0x00080000U #define RXPKTCPLMODE_MASK 0x00040000U #define RXPKTCPLMODE_SHIFT 18 @@ -106,6 +107,7 @@ #define PKTSHIFT_SHIFT 10 #define PKTSHIFT(x) ((x) << PKTSHIFT_SHIFT) #define PKTSHIFT_GET(x) (((x) & PKTSHIFT_MASK) >> PKTSHIFT_SHIFT) +#define INGPCIEBOUNDARY_32B_X 0 #define INGPCIEBOUNDARY_MASK 0x00000380U #define INGPCIEBOUNDARY_SHIFT 7 #define INGPCIEBOUNDARY(x) ((x) << INGPCIEBOUNDARY_SHIFT) @@ -114,6 +116,14 @@ #define INGPADBOUNDARY(x) ((x) << INGPADBOUNDARY_SHIFT) #define INGPADBOUNDARY_GET(x) (((x) & INGPADBOUNDARY_MASK) \ >> INGPADBOUNDARY_SHIFT) +#define INGPACKBOUNDARY_16B_X 0 +#define INGPACKBOUNDARY_SHIFT_X 5 + +#define INGPACKBOUNDARY_S 16 +#define INGPACKBOUNDARY_M 0x7U +#define INGPACKBOUNDARY_V(x) ((x) << INGPACKBOUNDARY_S) +#define INGPACKBOUNDARY_G(x) (((x) >> INGPACKBOUNDARY_S) \ + & INGPACKBOUNDARY_M) #define EGRPCIEBOUNDARY_MASK 0x0000000eU #define EGRPCIEBOUNDARY_SHIFT 1 #define EGRPCIEBOUNDARY(x) ((x) << EGRPCIEBOUNDARY_SHIFT) diff --git a/drivers/net/ethernet/chelsio/cxgb4vf/sge.c b/drivers/net/ethernet/chelsio/cxgb4vf/sge.c index a18830d8aa6d..cd5b7896cb67 100644 --- a/drivers/net/ethernet/chelsio/cxgb4vf/sge.c +++ b/drivers/net/ethernet/chelsio/cxgb4vf/sge.c @@ -2436,6 +2436,7 @@ int t4vf_sge_init(struct adapter *adapter) u32 fl0 = sge_params->sge_fl_buffer_size[0]; u32 fl1 = sge_params->sge_fl_buffer_size[1]; struct sge *s = &adapter->sge; + unsigned int ingpadboundary, ingpackboundary; /* * Start by vetting the basic SGE parameters which have been set up by @@ -2460,8 +2461,34 @@ int t4vf_sge_init(struct adapter *adapter) s->stat_len = ((sge_params->sge_control & EGRSTATUSPAGESIZE_MASK) ? 128 : 64); s->pktshift = PKTSHIFT_GET(sge_params->sge_control); - s->fl_align = 1 << (INGPADBOUNDARY_GET(sge_params->sge_control) + - SGE_INGPADBOUNDARY_SHIFT); + + /* T4 uses a single control field to specify both the PCIe Padding and + * Packing Boundary. T5 introduced the ability to specify these + * separately. The actual Ingress Packet Data alignment boundary + * within Packed Buffer Mode is the maximum of these two + * specifications. (Note that it makes no real practical sense to + * have the Pading Boudary be larger than the Packing Boundary but you + * could set the chip up that way and, in fact, legacy T4 code would + * end doing this because it would initialize the Padding Boundary and + * leave the Packing Boundary initialized to 0 (16 bytes).) + */ + ingpadboundary = 1 << (INGPADBOUNDARY_GET(sge_params->sge_control) + + X_INGPADBOUNDARY_SHIFT); + if (is_t4(adapter->params.chip)) { + s->fl_align = ingpadboundary; + } else { + /* T5 has a different interpretation of one of the PCIe Packing + * Boundary values. + */ + ingpackboundary = INGPACKBOUNDARY_G(sge_params->sge_control2); + if (ingpackboundary == INGPACKBOUNDARY_16B_X) + ingpackboundary = 16; + else + ingpackboundary = 1 << (ingpackboundary + + INGPACKBOUNDARY_SHIFT_X); + + s->fl_align = max(ingpadboundary, ingpackboundary); + } /* * Set up tasklet timers. diff --git a/drivers/net/ethernet/chelsio/cxgb4vf/t4vf_common.h b/drivers/net/ethernet/chelsio/cxgb4vf/t4vf_common.h index 95df61dcb4ce..b5c301d9565e 100644 --- a/drivers/net/ethernet/chelsio/cxgb4vf/t4vf_common.h +++ b/drivers/net/ethernet/chelsio/cxgb4vf/t4vf_common.h @@ -134,6 +134,7 @@ struct dev_params { */ struct sge_params { u32 sge_control; /* padding, boundaries, lengths, etc. */ + u32 sge_control2; /* T5: more of the same */ u32 sge_host_page_size; /* RDMA page sizes */ u32 sge_queues_per_page; /* RDMA queues/page */ u32 sge_user_mode_limits; /* limits for BAR2 user mode accesses */ diff --git a/drivers/net/ethernet/chelsio/cxgb4vf/t4vf_hw.c b/drivers/net/ethernet/chelsio/cxgb4vf/t4vf_hw.c index e984fdc48ba2..dc30d2852850 100644 --- a/drivers/net/ethernet/chelsio/cxgb4vf/t4vf_hw.c +++ b/drivers/net/ethernet/chelsio/cxgb4vf/t4vf_hw.c @@ -468,6 +468,29 @@ int t4vf_get_sge_params(struct adapter *adapter) sge_params->sge_timer_value_2_and_3 = vals[5]; sge_params->sge_timer_value_4_and_5 = vals[6]; + /* T4 uses a single control field to specify both the PCIe Padding and + * Packing Boundary. T5 introduced the ability to specify these + * separately with the Padding Boundary in SGE_CONTROL and and Packing + * Boundary in SGE_CONTROL2. So for T5 and later we need to grab + * SGE_CONTROL in order to determine how ingress packet data will be + * laid out in Packed Buffer Mode. Unfortunately, older versions of + * the firmware won't let us retrieve SGE_CONTROL2 so if we get a + * failure grabbing it we throw an error since we can't figure out the + * right value. + */ + if (!is_t4(adapter->params.chip)) { + params[0] = (FW_PARAMS_MNEM(FW_PARAMS_MNEM_REG) | + FW_PARAMS_PARAM_XYZ(SGE_CONTROL2_A)); + v = t4vf_query_params(adapter, 1, params, vals); + if (v != FW_SUCCESS) { + dev_err(adapter->pdev_dev, + "Unable to get SGE Control2; " + "probably old firmware.\n"); + return v; + } + sge_params->sge_control2 = vals[0]; + } + params[0] = (FW_PARAMS_MNEM(FW_PARAMS_MNEM_REG) | FW_PARAMS_PARAM_XYZ(SGE_INGRESS_RX_THRESHOLD)); v = t4vf_query_params(adapter, 1, params, vals); From 50d21a662d6d3155132edf34f72161a59675c02c Mon Sep 17 00:00:00 2001 From: Hariprasad Shenai Date: Fri, 7 Nov 2014 17:06:31 +0530 Subject: [PATCH 260/371] cxgb4vf: FL Starvation Threshold needs to be larger than the SGE's Egress Congestion Threshold Free List Starvation Threshold needs to be larger than the SGE's Egress Congestion Threshold or we'll end up in a mutual stall where the driver waits for Ingress Packets to drive replacing Free List Pointers and the SGE waits for Free List Pointers before pushing Ingress Packets to the host. Based on original work by Casey Leedom Signed-off-by: Hariprasad Shenai Signed-off-by: David S. Miller --- drivers/net/ethernet/chelsio/cxgb4vf/sge.c | 16 ++++++++++------ .../net/ethernet/chelsio/cxgb4vf/t4vf_common.h | 1 + drivers/net/ethernet/chelsio/cxgb4vf/t4vf_hw.c | 5 ++++- 3 files changed, 15 insertions(+), 7 deletions(-) diff --git a/drivers/net/ethernet/chelsio/cxgb4vf/sge.c b/drivers/net/ethernet/chelsio/cxgb4vf/sge.c index cd5b7896cb67..fdd078d7d82c 100644 --- a/drivers/net/ethernet/chelsio/cxgb4vf/sge.c +++ b/drivers/net/ethernet/chelsio/cxgb4vf/sge.c @@ -93,12 +93,6 @@ enum { TX_QCHECK_PERIOD = (HZ / 2), MAX_TIMER_TX_RECLAIM = 100, - /* - * An FL with <= FL_STARVE_THRES buffers is starving and a periodic - * timer will attempt to refill it. - */ - FL_STARVE_THRES = 4, - /* * Suspend an Ethernet TX queue with fewer available descriptors than * this. We always want to have room for a maximum sized packet: @@ -2490,6 +2484,16 @@ int t4vf_sge_init(struct adapter *adapter) s->fl_align = max(ingpadboundary, ingpackboundary); } + /* A FL with <= fl_starve_thres buffers is starving and a periodic + * timer will attempt to refill it. This needs to be larger than the + * SGE's Egress Congestion Threshold. If it isn't, then we can get + * stuck waiting for new packets while the SGE is waiting for us to + * give it more Free List entries. (Note that the SGE's Egress + * Congestion Threshold is in units of 2 Free List pointers.) + */ + s->fl_starve_thres + = EGRTHRESHOLD_GET(sge_params->sge_congestion_control)*2 + 1; + /* * Set up tasklet timers. */ diff --git a/drivers/net/ethernet/chelsio/cxgb4vf/t4vf_common.h b/drivers/net/ethernet/chelsio/cxgb4vf/t4vf_common.h index b5c301d9565e..4b6a6d14d86d 100644 --- a/drivers/net/ethernet/chelsio/cxgb4vf/t4vf_common.h +++ b/drivers/net/ethernet/chelsio/cxgb4vf/t4vf_common.h @@ -140,6 +140,7 @@ struct sge_params { u32 sge_user_mode_limits; /* limits for BAR2 user mode accesses */ u32 sge_fl_buffer_size[16]; /* free list buffer sizes */ u32 sge_ingress_rx_threshold; /* RX counter interrupt threshold[4] */ + u32 sge_congestion_control; /* congestion thresholds, etc. */ u32 sge_timer_value_0_and_1; /* interrupt coalescing timer values */ u32 sge_timer_value_2_and_3; u32 sge_timer_value_4_and_5; diff --git a/drivers/net/ethernet/chelsio/cxgb4vf/t4vf_hw.c b/drivers/net/ethernet/chelsio/cxgb4vf/t4vf_hw.c index dc30d2852850..1e896b923234 100644 --- a/drivers/net/ethernet/chelsio/cxgb4vf/t4vf_hw.c +++ b/drivers/net/ethernet/chelsio/cxgb4vf/t4vf_hw.c @@ -493,10 +493,13 @@ int t4vf_get_sge_params(struct adapter *adapter) params[0] = (FW_PARAMS_MNEM(FW_PARAMS_MNEM_REG) | FW_PARAMS_PARAM_XYZ(SGE_INGRESS_RX_THRESHOLD)); - v = t4vf_query_params(adapter, 1, params, vals); + params[1] = (FW_PARAMS_MNEM(FW_PARAMS_MNEM_REG) | + FW_PARAMS_PARAM_XYZ(SGE_CONM_CTRL)); + v = t4vf_query_params(adapter, 2, params, vals); if (v) return v; sge_params->sge_ingress_rx_threshold = vals[0]; + sge_params->sge_congestion_control = vals[1]; return 0; } From cfdf1e1ba5bf55e095cf4bcaa9585c4759f239e8 Mon Sep 17 00:00:00 2001 From: Jesse Gross Date: Mon, 10 Nov 2014 11:45:13 -0800 Subject: [PATCH 261/371] udptunnel: Add SKB_GSO_UDP_TUNNEL during gro_complete. When doing GRO processing for UDP tunnels, we never add SKB_GSO_UDP_TUNNEL to gso_type - only the type of the inner protocol is added (such as SKB_GSO_TCPV4). The result is that if the packet is later resegmented we will do GSO but not treat it as a tunnel. This results in UDP fragmentation of the outer header instead of (i.e.) TCP segmentation of the inner header as was originally on the wire. Signed-off-by: Jesse Gross Signed-off-by: David S. Miller --- drivers/net/vxlan.c | 2 ++ include/net/udp_tunnel.h | 9 +++++++++ net/ipv4/fou.c | 2 ++ 3 files changed, 13 insertions(+) diff --git a/drivers/net/vxlan.c b/drivers/net/vxlan.c index ca309820d39e..cfb892b265e8 100644 --- a/drivers/net/vxlan.c +++ b/drivers/net/vxlan.c @@ -621,6 +621,8 @@ static int vxlan_gro_complete(struct sk_buff *skb, int nhoff) int vxlan_len = sizeof(struct vxlanhdr) + sizeof(struct ethhdr); int err = -ENOSYS; + udp_tunnel_gro_complete(skb, nhoff); + eh = (struct ethhdr *)(skb->data + nhoff + sizeof(struct vxlanhdr)); type = eh->h_proto; diff --git a/include/net/udp_tunnel.h b/include/net/udp_tunnel.h index a47790bcaa38..2a50a70ef587 100644 --- a/include/net/udp_tunnel.h +++ b/include/net/udp_tunnel.h @@ -100,6 +100,15 @@ static inline struct sk_buff *udp_tunnel_handle_offloads(struct sk_buff *skb, return iptunnel_handle_offloads(skb, udp_csum, type); } +static inline void udp_tunnel_gro_complete(struct sk_buff *skb, int nhoff) +{ + struct udphdr *uh; + + uh = (struct udphdr *)(skb->data + nhoff - sizeof(struct udphdr)); + skb_shinfo(skb)->gso_type |= uh->check ? + SKB_GSO_UDP_TUNNEL_CSUM : SKB_GSO_UDP_TUNNEL; +} + static inline void udp_tunnel_encap_enable(struct socket *sock) { #if IS_ENABLED(CONFIG_IPV6) diff --git a/net/ipv4/fou.c b/net/ipv4/fou.c index 32e78924e246..606c520ffd5a 100644 --- a/net/ipv4/fou.c +++ b/net/ipv4/fou.c @@ -133,6 +133,8 @@ static int fou_gro_complete(struct sk_buff *skb, int nhoff) int err = -ENOSYS; const struct net_offload **offloads; + udp_tunnel_gro_complete(skb, nhoff); + rcu_read_lock(); offloads = NAPI_GRO_CB(skb)->is_ipv6 ? inet6_offloads : inet_offloads; ops = rcu_dereference(offloads[proto]); From a815286b94875c0428444e036df7e4e1a070bec0 Mon Sep 17 00:00:00 2001 From: Anish Bhatt Date: Fri, 7 Nov 2014 15:41:21 -0800 Subject: [PATCH 262/371] cxgb4 : Fix bug in DCB app deletion Unlike CEE, IEEE has a bespoke app delete call and does not rely on priority for app deletion Fixes : 2376c879b80c ('cxgb4 : Improve handling of DCB negotiation or loss thereof') Signed-off-by: Anish Bhatt Signed-off-by: David S. Miller --- drivers/net/ethernet/chelsio/cxgb4/cxgb4_dcb.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_dcb.c b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_dcb.c index 6fe300e316c3..b6fdb142eacb 100644 --- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_dcb.c +++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_dcb.c @@ -79,8 +79,9 @@ static void cxgb4_dcb_cleanup_apps(struct net_device *dev) app.protocol = dcb->app_priority[i].protocolid; if (dcb->dcb_version == FW_PORT_DCB_VER_IEEE) { + app.priority = dcb->app_priority[i].user_prio_map; app.selector = dcb->app_priority[i].sel_field + 1; - err = dcb_ieee_setapp(dev, &app); + err = dcb_ieee_delapp(dev, &app); } else { app.selector = !!(dcb->app_priority[i].sel_field); err = dcb_setapp(dev, &app); From 9b460d3699324d570a4d4161c3741431887f102f Mon Sep 17 00:00:00 2001 From: Joe Thornber Date: Mon, 10 Nov 2014 15:03:24 +0000 Subject: [PATCH 263/371] dm btree: fix a recursion depth bug in btree walking code The walk code was using a 'ro_spine' to hold it's locked btree nodes. But this data structure is designed for the rolling lock scheme, and as such automatically unlocks blocks that are two steps up the call chain. This is not suitable for the simple recursive walk algorithm, which retraces its steps. This code is only used by the persistent array code, which in turn is only used by dm-cache. In order to trigger it you need to have a mapping tree that is more than 2 levels deep; which equates to 8-16 million cache blocks. For instance a 4T ssd with a very small block size of 32k only just triggers this bug. The fix just places the locked blocks on the stack, and stops using the ro_spine altogether. Signed-off-by: Joe Thornber Signed-off-by: Mike Snitzer Cc: stable@vger.kernel.org --- .../md/persistent-data/dm-btree-internal.h | 6 +++++ drivers/md/persistent-data/dm-btree-spine.c | 2 +- drivers/md/persistent-data/dm-btree.c | 24 ++++++++----------- 3 files changed, 17 insertions(+), 15 deletions(-) diff --git a/drivers/md/persistent-data/dm-btree-internal.h b/drivers/md/persistent-data/dm-btree-internal.h index 37d367bb9aa8..bf2b80d5c470 100644 --- a/drivers/md/persistent-data/dm-btree-internal.h +++ b/drivers/md/persistent-data/dm-btree-internal.h @@ -42,6 +42,12 @@ struct btree_node { } __packed; +/* + * Locks a block using the btree node validator. + */ +int bn_read_lock(struct dm_btree_info *info, dm_block_t b, + struct dm_block **result); + void inc_children(struct dm_transaction_manager *tm, struct btree_node *n, struct dm_btree_value_type *vt); diff --git a/drivers/md/persistent-data/dm-btree-spine.c b/drivers/md/persistent-data/dm-btree-spine.c index cf9fd676ae44..1b5e13ec7f96 100644 --- a/drivers/md/persistent-data/dm-btree-spine.c +++ b/drivers/md/persistent-data/dm-btree-spine.c @@ -92,7 +92,7 @@ struct dm_block_validator btree_node_validator = { /*----------------------------------------------------------------*/ -static int bn_read_lock(struct dm_btree_info *info, dm_block_t b, +int bn_read_lock(struct dm_btree_info *info, dm_block_t b, struct dm_block **result) { return dm_tm_read_lock(info->tm, b, &btree_node_validator, result); diff --git a/drivers/md/persistent-data/dm-btree.c b/drivers/md/persistent-data/dm-btree.c index 416060c25709..200ac12a1d40 100644 --- a/drivers/md/persistent-data/dm-btree.c +++ b/drivers/md/persistent-data/dm-btree.c @@ -847,22 +847,26 @@ EXPORT_SYMBOL_GPL(dm_btree_find_lowest_key); * FIXME: We shouldn't use a recursive algorithm when we have limited stack * space. Also this only works for single level trees. */ -static int walk_node(struct ro_spine *s, dm_block_t block, +static int walk_node(struct dm_btree_info *info, dm_block_t block, int (*fn)(void *context, uint64_t *keys, void *leaf), void *context) { int r; unsigned i, nr; + struct dm_block *node; struct btree_node *n; uint64_t keys; - r = ro_step(s, block); - n = ro_node(s); + r = bn_read_lock(info, block, &node); + if (r) + return r; + + n = dm_block_data(node); nr = le32_to_cpu(n->header.nr_entries); for (i = 0; i < nr; i++) { if (le32_to_cpu(n->header.flags) & INTERNAL_NODE) { - r = walk_node(s, value64(n, i), fn, context); + r = walk_node(info, value64(n, i), fn, context); if (r) goto out; } else { @@ -874,7 +878,7 @@ static int walk_node(struct ro_spine *s, dm_block_t block, } out: - ro_pop(s); + dm_tm_unlock(info->tm, node); return r; } @@ -882,15 +886,7 @@ int dm_btree_walk(struct dm_btree_info *info, dm_block_t root, int (*fn)(void *context, uint64_t *keys, void *leaf), void *context) { - int r; - struct ro_spine spine; - BUG_ON(info->levels > 1); - - init_ro_spine(&spine, info); - r = walk_node(&spine, root, fn, context); - exit_ro_spine(&spine); - - return r; + return walk_node(info, root, fn, context); } EXPORT_SYMBOL_GPL(dm_btree_walk); From fc2a602f38d82b47a838605cd4b464c997b65355 Mon Sep 17 00:00:00 2001 From: Keerthy Date: Thu, 6 Nov 2014 16:20:02 +0530 Subject: [PATCH 264/371] ARM: dts: AM43x-EPOS-EVM: Fix DCDC3 voltage DCDC3 supplies voltage to DDR. Fix DCDC3 volatge to 1.5V which is the reset value. Programming to a non-reset value while executing from DDR will result in random hangs. Signed-off-by: Keerthy Signed-off-by: Tony Lindgren --- arch/arm/boot/dts/am43x-epos-evm.dts | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/arm/boot/dts/am43x-epos-evm.dts b/arch/arm/boot/dts/am43x-epos-evm.dts index ac3e4859935f..f7e9bba10bd6 100644 --- a/arch/arm/boot/dts/am43x-epos-evm.dts +++ b/arch/arm/boot/dts/am43x-epos-evm.dts @@ -358,8 +358,8 @@ dcdc3: regulator-dcdc3 { compatible = "ti,tps65218-dcdc3"; regulator-name = "vdcdc3"; - regulator-min-microvolt = <1350000>; - regulator-max-microvolt = <1350000>; + regulator-min-microvolt = <1500000>; + regulator-max-microvolt = <1500000>; regulator-boot-on; regulator-always-on; }; From 3015ddbd8b9f85a5bb3838442732f81feffa6986 Mon Sep 17 00:00:00 2001 From: Keerthy Date: Thu, 6 Nov 2014 16:20:03 +0530 Subject: [PATCH 265/371] ARM: dts: AM437x-GP-EVM: Fix DCDC3 voltage DCDC3 supplies voltage to DDR. Fix DCDC3 volatge to 1.5V which is the reset value. Programming to a non-reset value while executing from DDR will result in random hangs. Signed-off-by: Keerthy Signed-off-by: Tony Lindgren --- arch/arm/boot/dts/am437x-gp-evm.dts | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/arm/boot/dts/am437x-gp-evm.dts b/arch/arm/boot/dts/am437x-gp-evm.dts index e7ac47fa6615..a521ac0a7d5a 100644 --- a/arch/arm/boot/dts/am437x-gp-evm.dts +++ b/arch/arm/boot/dts/am437x-gp-evm.dts @@ -291,8 +291,8 @@ dcdc3: regulator-dcdc3 { compatible = "ti,tps65218-dcdc3"; regulator-name = "vdcdc3"; - regulator-min-microvolt = <1350000>; - regulator-max-microvolt = <1350000>; + regulator-min-microvolt = <1500000>; + regulator-max-microvolt = <1500000>; regulator-boot-on; regulator-always-on; }; From 5cd98a7a28cf11897c8c4f93b9083bf1363a12b5 Mon Sep 17 00:00:00 2001 From: Keerthy Date: Thu, 6 Nov 2014 16:20:04 +0530 Subject: [PATCH 266/371] ARM: dts: AM437x-SK-EVM: Fix DCDC3 voltage DCDC3 supplies voltage to DDR. Fix DCDC3 volatge to 1.5V which is the reset value. Programming to a non-reset value while executing from DDR will result in random hangs. Signed-off-by: Keerthy Signed-off-by: Tony Lindgren --- arch/arm/boot/dts/am437x-sk-evm.dts | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/arm/boot/dts/am437x-sk-evm.dts b/arch/arm/boot/dts/am437x-sk-evm.dts index 859ff3d620ee..87aa4f3b8b3d 100644 --- a/arch/arm/boot/dts/am437x-sk-evm.dts +++ b/arch/arm/boot/dts/am437x-sk-evm.dts @@ -363,8 +363,8 @@ dcdc3: regulator-dcdc3 { compatible = "ti,tps65218-dcdc3"; regulator-name = "vdds_ddr"; - regulator-min-microvolt = <1350000>; - regulator-max-microvolt = <1350000>; + regulator-min-microvolt = <1500000>; + regulator-max-microvolt = <1500000>; regulator-boot-on; regulator-always-on; }; From dc68cd11f5a8662e50135a0e8e5e451494febd47 Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Thu, 6 Nov 2014 08:37:19 -0600 Subject: [PATCH 267/371] MAINTAINERS: add more files under OMAP SUPPORT These files are very important to the healt of the OMAP architecture, specially when it comes to PM support which currently we have working for at least OMAP3 and we'd like to know about any changes being made to our PMICs and IRQ controllers. Signed-off-by: Felipe Balbi Signed-off-by: Tony Lindgren --- MAINTAINERS | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/MAINTAINERS b/MAINTAINERS index dab92a78d1d5..45f8fac2a005 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -6590,6 +6590,23 @@ T: git git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap.git S: Maintained F: arch/arm/*omap*/ F: drivers/i2c/busses/i2c-omap.c +F: drivers/irqchip/irq-omap-intc.c +F: drivers/mfd/*omap*.c +F: drivers/mfd/menelaus.c +F: drivers/mfd/palmas.c +F: drivers/mfd/tps65217.c +F: drivers/mfd/tps65218.c +F: drivers/mfd/tps65910.c +F: drivers/mfd/twl-core.[ch] +F: drivers/mfd/twl4030*.c +F: drivers/mfd/twl6030*.c +F: drivers/mfd/twl6040*.c +F: drivers/regulator/palmas-regulator*.c +F: drivers/regulator/pbias-regulator.c +F: drivers/regulator/tps65217-regulator.c +F: drivers/regulator/tps65218-regulator.c +F: drivers/regulator/tps65910-regulator.c +F: drivers/regulator/twl-regulator.c F: include/linux/i2c-omap.h OMAP DEVICE TREE SUPPORT From 05eb20fa69dfdf9551a61397f16a41126ad43c55 Mon Sep 17 00:00:00 2001 From: Nishanth Menon Date: Tue, 21 Oct 2014 09:24:22 -0500 Subject: [PATCH 268/371] MAINTAINERS: Update entry for omap related .dts files to cover new SoCs MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit DRA7(including AM5x) and AM47x series are handled under OMAP umbrella. These SoC support and dts have been added since 3.14 kernel and Pull requests for these have come in from OMAP till date. So just ensure that get_maintainers can pick up this list as well. Cc: linux-omap@vger.kernel.org Cc: devicetree@vger.kernel.org Signed-off-by: Nishanth Menon Acked-by: Benoît Cousson Signed-off-by: Tony Lindgren --- MAINTAINERS | 3 +++ 1 file changed, 3 insertions(+) diff --git a/MAINTAINERS b/MAINTAINERS index 45f8fac2a005..d0e1d2fc985c 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -6617,6 +6617,9 @@ L: devicetree@vger.kernel.org S: Maintained F: arch/arm/boot/dts/*omap* F: arch/arm/boot/dts/*am3* +F: arch/arm/boot/dts/*am4* +F: arch/arm/boot/dts/*am5* +F: arch/arm/boot/dts/*dra7* OMAP CLOCK FRAMEWORK SUPPORT M: Paul Walmsley From e6be7bb8a32a99495f0d8fa51cac392a6f4bd631 Mon Sep 17 00:00:00 2001 From: Helge Deller Date: Tue, 21 Oct 2014 21:27:06 +0200 Subject: [PATCH 269/371] parisc: Wire up bpf syscall Signed-off-by: Helge Deller --- arch/parisc/include/uapi/asm/unistd.h | 3 ++- arch/parisc/kernel/syscall_table.S | 1 + 2 files changed, 3 insertions(+), 1 deletion(-) diff --git a/arch/parisc/include/uapi/asm/unistd.h b/arch/parisc/include/uapi/asm/unistd.h index 8667f18be238..5f5c0373de63 100644 --- a/arch/parisc/include/uapi/asm/unistd.h +++ b/arch/parisc/include/uapi/asm/unistd.h @@ -833,8 +833,9 @@ #define __NR_seccomp (__NR_Linux + 338) #define __NR_getrandom (__NR_Linux + 339) #define __NR_memfd_create (__NR_Linux + 340) +#define __NR_bpf (__NR_Linux + 341) -#define __NR_Linux_syscalls (__NR_memfd_create + 1) +#define __NR_Linux_syscalls (__NR_bpf + 1) #define __IGNORE_select /* newselect */ diff --git a/arch/parisc/kernel/syscall_table.S b/arch/parisc/kernel/syscall_table.S index b563d9c8268b..d65c50a68c50 100644 --- a/arch/parisc/kernel/syscall_table.S +++ b/arch/parisc/kernel/syscall_table.S @@ -436,6 +436,7 @@ ENTRY_SAME(seccomp) ENTRY_SAME(getrandom) ENTRY_SAME(memfd_create) /* 340 */ + ENTRY_SAME(bpf) /* Nothing yet */ From 8dd95c68f32b821ec02e89c42a4e500d6aebbd84 Mon Sep 17 00:00:00 2001 From: Helge Deller Date: Tue, 21 Oct 2014 21:29:09 +0200 Subject: [PATCH 270/371] parisc: Use BUILD_BUG() instead of undefined functions Signed-off-by: Helge Deller --- arch/parisc/include/asm/uaccess.h | 19 ++++++++----------- 1 file changed, 8 insertions(+), 11 deletions(-) diff --git a/arch/parisc/include/asm/uaccess.h b/arch/parisc/include/asm/uaccess.h index 4006964d8e12..a5cb070b54bf 100644 --- a/arch/parisc/include/asm/uaccess.h +++ b/arch/parisc/include/asm/uaccess.h @@ -9,6 +9,8 @@ #include #include +#include + #define VERIFY_READ 0 #define VERIFY_WRITE 1 @@ -28,11 +30,6 @@ * that put_user is the same as __put_user, etc. */ -extern int __get_kernel_bad(void); -extern int __get_user_bad(void); -extern int __put_kernel_bad(void); -extern int __put_user_bad(void); - static inline long access_ok(int type, const void __user * addr, unsigned long size) { @@ -43,8 +40,8 @@ static inline long access_ok(int type, const void __user * addr, #define get_user __get_user #if !defined(CONFIG_64BIT) -#define LDD_KERNEL(ptr) __get_kernel_bad(); -#define LDD_USER(ptr) __get_user_bad(); +#define LDD_KERNEL(ptr) BUILD_BUG() +#define LDD_USER(ptr) BUILD_BUG() #define STD_KERNEL(x, ptr) __put_kernel_asm64(x,ptr) #define STD_USER(x, ptr) __put_user_asm64(x,ptr) #define ASM_WORD_INSN ".word\t" @@ -94,7 +91,7 @@ struct exception_data { case 2: __get_kernel_asm("ldh",ptr); break; \ case 4: __get_kernel_asm("ldw",ptr); break; \ case 8: LDD_KERNEL(ptr); break; \ - default: __get_kernel_bad(); break; \ + default: BUILD_BUG(); break; \ } \ } \ else { \ @@ -103,7 +100,7 @@ struct exception_data { case 2: __get_user_asm("ldh",ptr); break; \ case 4: __get_user_asm("ldw",ptr); break; \ case 8: LDD_USER(ptr); break; \ - default: __get_user_bad(); break; \ + default: BUILD_BUG(); break; \ } \ } \ \ @@ -136,7 +133,7 @@ struct exception_data { case 2: __put_kernel_asm("sth",__x,ptr); break; \ case 4: __put_kernel_asm("stw",__x,ptr); break; \ case 8: STD_KERNEL(__x,ptr); break; \ - default: __put_kernel_bad(); break; \ + default: BUILD_BUG(); break; \ } \ } \ else { \ @@ -145,7 +142,7 @@ struct exception_data { case 2: __put_user_asm("sth",__x,ptr); break; \ case 4: __put_user_asm("stw",__x,ptr); break; \ case 8: STD_USER(__x,ptr); break; \ - default: __put_user_bad(); break; \ + default: BUILD_BUG(); break; \ } \ } \ \ From 2fe749f50b0bec07650ef135b29b1f55bf543869 Mon Sep 17 00:00:00 2001 From: Helge Deller Date: Mon, 10 Nov 2014 21:46:18 +0100 Subject: [PATCH 271/371] parisc: Use compat layer for msgctl, shmat, shmctl and semtimedop syscalls Switch over the msgctl, shmat, shmctl and semtimedop syscalls to use the compat layer. The problem was found with the debian procenv package, which called shmctl(0, SHM_INFO, &info); in which the shmctl syscall then overwrote parts of the surrounding areas on the stack on which the info variable was stored and thus lead to a segfault later on. Additionally fix the definition of struct shminfo64 to use unsigned longs like the other architectures. This has no impact on userspace since we only have a 32bit userspace up to now. Signed-off-by: Helge Deller Cc: John David Anglin Cc: # v3.10+ --- arch/parisc/include/uapi/asm/shmbuf.h | 25 +++++++++---------------- arch/parisc/kernel/syscall_table.S | 8 ++++---- 2 files changed, 13 insertions(+), 20 deletions(-) diff --git a/arch/parisc/include/uapi/asm/shmbuf.h b/arch/parisc/include/uapi/asm/shmbuf.h index 0a3eada1863b..f395cde7b593 100644 --- a/arch/parisc/include/uapi/asm/shmbuf.h +++ b/arch/parisc/include/uapi/asm/shmbuf.h @@ -36,23 +36,16 @@ struct shmid64_ds { unsigned int __unused2; }; -#ifdef CONFIG_64BIT -/* The 'unsigned int' (formerly 'unsigned long') data types below will - * ensure that a 32-bit app calling shmctl(*,IPC_INFO,*) will work on - * a wide kernel, but if some of these values are meant to contain pointers - * they may need to be 'long long' instead. -PB XXX FIXME - */ -#endif struct shminfo64 { - unsigned int shmmax; - unsigned int shmmin; - unsigned int shmmni; - unsigned int shmseg; - unsigned int shmall; - unsigned int __unused1; - unsigned int __unused2; - unsigned int __unused3; - unsigned int __unused4; + unsigned long shmmax; + unsigned long shmmin; + unsigned long shmmni; + unsigned long shmseg; + unsigned long shmall; + unsigned long __unused1; + unsigned long __unused2; + unsigned long __unused3; + unsigned long __unused4; }; #endif /* _PARISC_SHMBUF_H */ diff --git a/arch/parisc/kernel/syscall_table.S b/arch/parisc/kernel/syscall_table.S index d65c50a68c50..fe4f0b89bf8f 100644 --- a/arch/parisc/kernel/syscall_table.S +++ b/arch/parisc/kernel/syscall_table.S @@ -286,11 +286,11 @@ ENTRY_COMP(msgsnd) ENTRY_COMP(msgrcv) ENTRY_SAME(msgget) /* 190 */ - ENTRY_SAME(msgctl) - ENTRY_SAME(shmat) + ENTRY_COMP(msgctl) + ENTRY_COMP(shmat) ENTRY_SAME(shmdt) ENTRY_SAME(shmget) - ENTRY_SAME(shmctl) /* 195 */ + ENTRY_COMP(shmctl) /* 195 */ ENTRY_SAME(ni_syscall) /* streams1 */ ENTRY_SAME(ni_syscall) /* streams2 */ ENTRY_SAME(lstat64) @@ -323,7 +323,7 @@ ENTRY_SAME(epoll_ctl) /* 225 */ ENTRY_SAME(epoll_wait) ENTRY_SAME(remap_file_pages) - ENTRY_SAME(semtimedop) + ENTRY_COMP(semtimedop) ENTRY_COMP(mq_open) ENTRY_SAME(mq_unlink) /* 230 */ ENTRY_COMP(mq_timedsend) From d8f5457ab93965f0e695516ad23548954e3e9044 Mon Sep 17 00:00:00 2001 From: Helge Deller Date: Mon, 10 Nov 2014 22:04:47 +0100 Subject: [PATCH 272/371] parisc: Avoid using CONFIG_64BIT in userspace exported headers The gcc compiler provide the predefined __LP64__ macro. Use that instead. Signed-off-by: Helge Deller --- arch/parisc/include/uapi/asm/bitsperlong.h | 8 +------- arch/parisc/include/uapi/asm/msgbuf.h | 8 +++++--- arch/parisc/include/uapi/asm/sembuf.h | 6 ++++-- arch/parisc/include/uapi/asm/shmbuf.h | 10 ++++++---- arch/parisc/include/uapi/asm/signal.h | 2 +- 5 files changed, 17 insertions(+), 17 deletions(-) diff --git a/arch/parisc/include/uapi/asm/bitsperlong.h b/arch/parisc/include/uapi/asm/bitsperlong.h index 75196b415d3f..e0a23c7bdd43 100644 --- a/arch/parisc/include/uapi/asm/bitsperlong.h +++ b/arch/parisc/include/uapi/asm/bitsperlong.h @@ -1,13 +1,7 @@ #ifndef __ASM_PARISC_BITSPERLONG_H #define __ASM_PARISC_BITSPERLONG_H -/* - * using CONFIG_* outside of __KERNEL__ is wrong, - * __LP64__ was also removed from headers, so what - * is the right approach on parisc? - * -arnd - */ -#if (defined(__KERNEL__) && defined(CONFIG_64BIT)) || defined (__LP64__) +#if defined(__LP64__) #define __BITS_PER_LONG 64 #define SHIFT_PER_LONG 6 #else diff --git a/arch/parisc/include/uapi/asm/msgbuf.h b/arch/parisc/include/uapi/asm/msgbuf.h index fe88f2649418..342138983914 100644 --- a/arch/parisc/include/uapi/asm/msgbuf.h +++ b/arch/parisc/include/uapi/asm/msgbuf.h @@ -1,6 +1,8 @@ #ifndef _PARISC_MSGBUF_H #define _PARISC_MSGBUF_H +#include + /* * The msqid64_ds structure for parisc architecture, copied from sparc. * Note extra padding because this structure is passed back and forth @@ -13,15 +15,15 @@ struct msqid64_ds { struct ipc64_perm msg_perm; -#ifndef CONFIG_64BIT +#if __BITS_PER_LONG != 64 unsigned int __pad1; #endif __kernel_time_t msg_stime; /* last msgsnd time */ -#ifndef CONFIG_64BIT +#if __BITS_PER_LONG != 64 unsigned int __pad2; #endif __kernel_time_t msg_rtime; /* last msgrcv time */ -#ifndef CONFIG_64BIT +#if __BITS_PER_LONG != 64 unsigned int __pad3; #endif __kernel_time_t msg_ctime; /* last change time */ diff --git a/arch/parisc/include/uapi/asm/sembuf.h b/arch/parisc/include/uapi/asm/sembuf.h index 1e59ffd3bd1e..f01d89e30d73 100644 --- a/arch/parisc/include/uapi/asm/sembuf.h +++ b/arch/parisc/include/uapi/asm/sembuf.h @@ -1,6 +1,8 @@ #ifndef _PARISC_SEMBUF_H #define _PARISC_SEMBUF_H +#include + /* * The semid64_ds structure for parisc architecture. * Note extra padding because this structure is passed back and forth @@ -13,11 +15,11 @@ struct semid64_ds { struct ipc64_perm sem_perm; /* permissions .. see ipc.h */ -#ifndef CONFIG_64BIT +#if __BITS_PER_LONG != 64 unsigned int __pad1; #endif __kernel_time_t sem_otime; /* last semop time */ -#ifndef CONFIG_64BIT +#if __BITS_PER_LONG != 64 unsigned int __pad2; #endif __kernel_time_t sem_ctime; /* last change time */ diff --git a/arch/parisc/include/uapi/asm/shmbuf.h b/arch/parisc/include/uapi/asm/shmbuf.h index f395cde7b593..8496c38560c6 100644 --- a/arch/parisc/include/uapi/asm/shmbuf.h +++ b/arch/parisc/include/uapi/asm/shmbuf.h @@ -1,6 +1,8 @@ #ifndef _PARISC_SHMBUF_H #define _PARISC_SHMBUF_H +#include + /* * The shmid64_ds structure for parisc architecture. * Note extra padding because this structure is passed back and forth @@ -13,19 +15,19 @@ struct shmid64_ds { struct ipc64_perm shm_perm; /* operation perms */ -#ifndef CONFIG_64BIT +#if __BITS_PER_LONG != 64 unsigned int __pad1; #endif __kernel_time_t shm_atime; /* last attach time */ -#ifndef CONFIG_64BIT +#if __BITS_PER_LONG != 64 unsigned int __pad2; #endif __kernel_time_t shm_dtime; /* last detach time */ -#ifndef CONFIG_64BIT +#if __BITS_PER_LONG != 64 unsigned int __pad3; #endif __kernel_time_t shm_ctime; /* last change time */ -#ifndef CONFIG_64BIT +#if __BITS_PER_LONG != 64 unsigned int __pad4; #endif size_t shm_segsz; /* size of segment (bytes) */ diff --git a/arch/parisc/include/uapi/asm/signal.h b/arch/parisc/include/uapi/asm/signal.h index 10df7079f4cd..e26043b73f5d 100644 --- a/arch/parisc/include/uapi/asm/signal.h +++ b/arch/parisc/include/uapi/asm/signal.h @@ -85,7 +85,7 @@ struct siginfo; /* Type of a signal handler. */ -#ifdef CONFIG_64BIT +#if defined(__LP64__) /* function pointers on 64-bit parisc are pointers to little structs and the * compiler doesn't support code which changes or tests the address of * the function in the little struct. This is really ugly -PB From e30f53aad2202b5526c40c36d8eeac8bf290bde5 Mon Sep 17 00:00:00 2001 From: Rabin Vincent Date: Mon, 10 Nov 2014 19:46:34 +0100 Subject: [PATCH 273/371] tracing: Do not busy wait in buffer splice On a !PREEMPT kernel, attempting to use trace-cmd results in a soft lockup: # trace-cmd record -e raw_syscalls:* -F false NMI watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [trace-cmd:61] ... Call Trace: [] ? __wake_up_common+0x90/0x90 [] wait_on_pipe+0x35/0x40 [] tracing_buffers_splice_read+0x2e3/0x3c0 [] ? tracing_stats_read+0x2a0/0x2a0 [] ? _raw_spin_unlock+0x2b/0x40 [] ? do_read_fault+0x21b/0x290 [] ? handle_mm_fault+0x2ba/0xbd0 [] ? trace_event_buffer_lock_reserve+0x40/0x80 [] ? trace_buffer_lock_reserve+0x22/0x60 [] ? trace_event_buffer_lock_reserve+0x40/0x80 [] do_splice_to+0x6d/0x90 [] SyS_splice+0x7c1/0x800 [] tracesys_phase2+0xd3/0xd8 The problem is this: tracing_buffers_splice_read() calls ring_buffer_wait() to wait for data in the ring buffers. The buffers are not empty so ring_buffer_wait() returns immediately. But tracing_buffers_splice_read() calls ring_buffer_read_page() with full=1, meaning it only wants to read a full page. When the full page is not available, tracing_buffers_splice_read() tries to wait again with ring_buffer_wait(), which again returns immediately, and so on. Fix this by adding a "full" argument to ring_buffer_wait() which will make ring_buffer_wait() wait until the writer has left the reader's page, i.e. until full-page reads will succeed. Link: http://lkml.kernel.org/r/1415645194-25379-1-git-send-email-rabin@rab.in Cc: stable@vger.kernel.org # 3.16+ Fixes: b1169cc69ba9 ("tracing: Remove mock up poll wait function") Signed-off-by: Rabin Vincent Signed-off-by: Steven Rostedt --- include/linux/ring_buffer.h | 2 +- kernel/trace/ring_buffer.c | 81 ++++++++++++++++++++++++------------- kernel/trace/trace.c | 23 ++++------- 3 files changed, 62 insertions(+), 44 deletions(-) diff --git a/include/linux/ring_buffer.h b/include/linux/ring_buffer.h index 49a4d6f59108..e2c13cd863bd 100644 --- a/include/linux/ring_buffer.h +++ b/include/linux/ring_buffer.h @@ -97,7 +97,7 @@ __ring_buffer_alloc(unsigned long size, unsigned flags, struct lock_class_key *k __ring_buffer_alloc((size), (flags), &__key); \ }) -int ring_buffer_wait(struct ring_buffer *buffer, int cpu); +int ring_buffer_wait(struct ring_buffer *buffer, int cpu, bool full); int ring_buffer_poll_wait(struct ring_buffer *buffer, int cpu, struct file *filp, poll_table *poll_table); diff --git a/kernel/trace/ring_buffer.c b/kernel/trace/ring_buffer.c index 2d75c94ae87d..a56e07c8d15b 100644 --- a/kernel/trace/ring_buffer.c +++ b/kernel/trace/ring_buffer.c @@ -538,16 +538,18 @@ static void rb_wake_up_waiters(struct irq_work *work) * ring_buffer_wait - wait for input to the ring buffer * @buffer: buffer to wait on * @cpu: the cpu buffer to wait on + * @full: wait until a full page is available, if @cpu != RING_BUFFER_ALL_CPUS * * If @cpu == RING_BUFFER_ALL_CPUS then the task will wake up as soon * as data is added to any of the @buffer's cpu buffers. Otherwise * it will wait for data to be added to a specific cpu buffer. */ -int ring_buffer_wait(struct ring_buffer *buffer, int cpu) +int ring_buffer_wait(struct ring_buffer *buffer, int cpu, bool full) { - struct ring_buffer_per_cpu *cpu_buffer; + struct ring_buffer_per_cpu *uninitialized_var(cpu_buffer); DEFINE_WAIT(wait); struct rb_irq_work *work; + int ret = 0; /* * Depending on what the caller is waiting for, either any @@ -564,36 +566,61 @@ int ring_buffer_wait(struct ring_buffer *buffer, int cpu) } - prepare_to_wait(&work->waiters, &wait, TASK_INTERRUPTIBLE); + while (true) { + prepare_to_wait(&work->waiters, &wait, TASK_INTERRUPTIBLE); - /* - * The events can happen in critical sections where - * checking a work queue can cause deadlocks. - * After adding a task to the queue, this flag is set - * only to notify events to try to wake up the queue - * using irq_work. - * - * We don't clear it even if the buffer is no longer - * empty. The flag only causes the next event to run - * irq_work to do the work queue wake up. The worse - * that can happen if we race with !trace_empty() is that - * an event will cause an irq_work to try to wake up - * an empty queue. - * - * There's no reason to protect this flag either, as - * the work queue and irq_work logic will do the necessary - * synchronization for the wake ups. The only thing - * that is necessary is that the wake up happens after - * a task has been queued. It's OK for spurious wake ups. - */ - work->waiters_pending = true; + /* + * The events can happen in critical sections where + * checking a work queue can cause deadlocks. + * After adding a task to the queue, this flag is set + * only to notify events to try to wake up the queue + * using irq_work. + * + * We don't clear it even if the buffer is no longer + * empty. The flag only causes the next event to run + * irq_work to do the work queue wake up. The worse + * that can happen if we race with !trace_empty() is that + * an event will cause an irq_work to try to wake up + * an empty queue. + * + * There's no reason to protect this flag either, as + * the work queue and irq_work logic will do the necessary + * synchronization for the wake ups. The only thing + * that is necessary is that the wake up happens after + * a task has been queued. It's OK for spurious wake ups. + */ + work->waiters_pending = true; + + if (signal_pending(current)) { + ret = -EINTR; + break; + } + + if (cpu == RING_BUFFER_ALL_CPUS && !ring_buffer_empty(buffer)) + break; + + if (cpu != RING_BUFFER_ALL_CPUS && + !ring_buffer_empty_cpu(buffer, cpu)) { + unsigned long flags; + bool pagebusy; + + if (!full) + break; + + raw_spin_lock_irqsave(&cpu_buffer->reader_lock, flags); + pagebusy = cpu_buffer->reader_page == cpu_buffer->commit_page; + raw_spin_unlock_irqrestore(&cpu_buffer->reader_lock, flags); + + if (!pagebusy) + break; + } - if ((cpu == RING_BUFFER_ALL_CPUS && ring_buffer_empty(buffer)) || - (cpu != RING_BUFFER_ALL_CPUS && ring_buffer_empty_cpu(buffer, cpu))) schedule(); + } finish_wait(&work->waiters, &wait); - return 0; + + return ret; } /** diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c index 8a528392b1f4..15209335888d 100644 --- a/kernel/trace/trace.c +++ b/kernel/trace/trace.c @@ -1076,13 +1076,14 @@ update_max_tr_single(struct trace_array *tr, struct task_struct *tsk, int cpu) } #endif /* CONFIG_TRACER_MAX_TRACE */ -static int wait_on_pipe(struct trace_iterator *iter) +static int wait_on_pipe(struct trace_iterator *iter, bool full) { /* Iterators are static, they should be filled or empty */ if (trace_buffer_iter(iter, iter->cpu_file)) return 0; - return ring_buffer_wait(iter->trace_buffer->buffer, iter->cpu_file); + return ring_buffer_wait(iter->trace_buffer->buffer, iter->cpu_file, + full); } #ifdef CONFIG_FTRACE_STARTUP_TEST @@ -4434,15 +4435,12 @@ static int tracing_wait_pipe(struct file *filp) mutex_unlock(&iter->mutex); - ret = wait_on_pipe(iter); + ret = wait_on_pipe(iter, false); mutex_lock(&iter->mutex); if (ret) return ret; - - if (signal_pending(current)) - return -EINTR; } return 1; @@ -5372,16 +5370,12 @@ tracing_buffers_read(struct file *filp, char __user *ubuf, goto out_unlock; } mutex_unlock(&trace_types_lock); - ret = wait_on_pipe(iter); + ret = wait_on_pipe(iter, false); mutex_lock(&trace_types_lock); if (ret) { size = ret; goto out_unlock; } - if (signal_pending(current)) { - size = -EINTR; - goto out_unlock; - } goto again; } size = 0; @@ -5587,14 +5581,11 @@ tracing_buffers_splice_read(struct file *file, loff_t *ppos, goto out; } mutex_unlock(&trace_types_lock); - ret = wait_on_pipe(iter); + ret = wait_on_pipe(iter, true); mutex_lock(&trace_types_lock); if (ret) goto out; - if (signal_pending(current)) { - ret = -EINTR; - goto out; - } + goto again; } From 07906da78810dce5fd35b9449358c9208c693dca Mon Sep 17 00:00:00 2001 From: Rabin Vincent Date: Thu, 6 Nov 2014 22:26:07 +0100 Subject: [PATCH 274/371] tracing: Do not risk busy looping in buffer splice If the read loop in trace_buffers_splice_read() keeps failing due to memory allocation failures without reading even a single page then this function will keep busy looping. Remove the risk for that by exiting the function if memory allocation failures are seen. Link: http://lkml.kernel.org/r/1415309167-2373-2-git-send-email-rabin@rab.in Signed-off-by: Rabin Vincent Signed-off-by: Steven Rostedt --- kernel/trace/trace.c | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c index 15209335888d..92f4a6cee172 100644 --- a/kernel/trace/trace.c +++ b/kernel/trace/trace.c @@ -5494,7 +5494,7 @@ tracing_buffers_splice_read(struct file *file, loff_t *ppos, }; struct buffer_ref *ref; int entries, size, i; - ssize_t ret; + ssize_t ret = 0; mutex_lock(&trace_types_lock); @@ -5532,13 +5532,16 @@ tracing_buffers_splice_read(struct file *file, loff_t *ppos, int r; ref = kzalloc(sizeof(*ref), GFP_KERNEL); - if (!ref) + if (!ref) { + ret = -ENOMEM; break; + } ref->ref = 1; ref->buffer = iter->trace_buffer->buffer; ref->page = ring_buffer_alloc_read_page(ref->buffer, iter->cpu_file); if (!ref->page) { + ret = -ENOMEM; kfree(ref); break; } @@ -5576,6 +5579,9 @@ tracing_buffers_splice_read(struct file *file, loff_t *ppos, /* did we read anything? */ if (!spd.nr_pages) { + if (ret) + goto out; + if ((file->f_flags & O_NONBLOCK) || (flags & SPLICE_F_NONBLOCK)) { ret = -EAGAIN; goto out; From 73b3a6657a88ef5348a0d69c9a8107d6f01ae862 Mon Sep 17 00:00:00 2001 From: Roger Quadros Date: Mon, 3 Nov 2014 12:09:52 +0200 Subject: [PATCH 275/371] pinctrl: dra: dt-bindings: Fix output pull up/down For PIN_OUTPUT_PULLUP and PIN_OUTPUT_PULLDOWN we must not set the PULL_DIS bit which disables the PULLs. PULL_ENA is a 0 and using it in an OR operation is a NOP, so don't use it in the PIN_OUTPUT_PULLUP/DOWN macros. Fixes: 23d9cec07c58 ("pinctrl: dra: dt-bindings: Fix pull enable/disable") Signed-off-by: Roger Quadros Acked-by: Nishanth Menon Signed-off-by: Tony Lindgren --- include/dt-bindings/pinctrl/dra.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/include/dt-bindings/pinctrl/dra.h b/include/dt-bindings/pinctrl/dra.h index 3d33794e4f3e..7448edff4723 100644 --- a/include/dt-bindings/pinctrl/dra.h +++ b/include/dt-bindings/pinctrl/dra.h @@ -40,8 +40,8 @@ /* Active pin states */ #define PIN_OUTPUT (0 | PULL_DIS) -#define PIN_OUTPUT_PULLUP (PIN_OUTPUT | PULL_ENA | PULL_UP) -#define PIN_OUTPUT_PULLDOWN (PIN_OUTPUT | PULL_ENA) +#define PIN_OUTPUT_PULLUP (PULL_UP) +#define PIN_OUTPUT_PULLDOWN (0) #define PIN_INPUT (INPUT_EN | PULL_DIS) #define PIN_INPUT_SLEW (INPUT_EN | SLEWCONTROL) #define PIN_INPUT_PULLUP (PULL_ENA | INPUT_EN | PULL_UP) From 92697dc9471b8655a2f1203fa351bc37b2d46a26 Mon Sep 17 00:00:00 2001 From: Tony Battersby Date: Mon, 10 Nov 2014 17:40:02 -0500 Subject: [PATCH 276/371] scsi: Fix more error handling in SCSI_IOCTL_SEND_COMMAND Fix an error path in SCSI_IOCTL_SEND_COMMAND that calls blk_put_request(rq) on an invalid IS_ERR(rq) pointer. Fixes: a492f075450f ("block,scsi: fixup blk_get_request dead queue scenarios") Signed-off-by: Tony Battersby Signed-off-by: Jens Axboe --- block/scsi_ioctl.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/block/scsi_ioctl.c b/block/scsi_ioctl.c index 1e053d911240..b0c2a616c8f9 100644 --- a/block/scsi_ioctl.c +++ b/block/scsi_ioctl.c @@ -458,7 +458,7 @@ int sg_scsi_ioctl(struct request_queue *q, struct gendisk *disk, fmode_t mode, rq = blk_get_request(q, in_len ? WRITE : READ, __GFP_WAIT); if (IS_ERR(rq)) { err = PTR_ERR(rq); - goto error; + goto error_free_buffer; } blk_rq_set_block_pc(rq); @@ -531,9 +531,11 @@ int sg_scsi_ioctl(struct request_queue *q, struct gendisk *disk, fmode_t mode, } error: + blk_put_request(rq); + +error_free_buffer: kfree(buffer); - if (rq) - blk_put_request(rq); + return err; } EXPORT_SYMBOL_GPL(sg_scsi_ioctl); From 0cdbcd6d3ebeffa7d1a475ed7a294315cd046a11 Mon Sep 17 00:00:00 2001 From: Giedrius Statkevicius Date: Mon, 10 Nov 2014 20:59:42 +0200 Subject: [PATCH 277/371] platform: hp_accel: Add SERIO_I8042 as a dependency since it now includes i8042.h/serio.h MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Make hp_accel dependent on SERIO_I8042 in the Kconfig because since commit a4c724d0723b078e4ab4670e557cda1795036a7a ('platform: hp_accel: add a i8042 filter to remove HPQ6000 data from kb bus stream') hp_accel includes i8042.h and serio.h. Reported-by: Jim Davis Signed-off-by: Giedrius Statkevičius Signed-off-by: Darren Hart --- drivers/platform/x86/Kconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/platform/x86/Kconfig b/drivers/platform/x86/Kconfig index 4dcfb7116a04..a2eabe6ff9ad 100644 --- a/drivers/platform/x86/Kconfig +++ b/drivers/platform/x86/Kconfig @@ -202,6 +202,7 @@ config TC1100_WMI config HP_ACCEL tristate "HP laptop accelerometer" depends on INPUT && ACPI + depends on SERIO_I8042 select SENSORS_LIS3LV02D select NEW_LEDS select LEDS_CLASS From 3438cf549d2f3ee8e52c82acc8e2a9710ac21a5b Mon Sep 17 00:00:00 2001 From: Daniel Thompson Date: Tue, 11 Nov 2014 16:29:46 +1030 Subject: [PATCH 278/371] param: fix crash on bad kernel arguments Currently if the user passes an invalid value on the kernel command line then the kernel will crash during argument parsing. On most systems this is very hard to debug because the console hasn't been initialized yet. This is a regression due to commit 51e158c12aca ("param: hand arguments after -- straight to init") which, in response to the systemd debug controversy, made it possible to explicitly pass arguments to init. To achieve this parse_args() was extended from simply returning an error code to returning a pointer. Regretably the new init args logic does not perform a proper validity check on the pointer resulting in a crash. This patch fixes the validity check. Should the check fail then no arguments will be passed to init. This is reasonable and matches how the kernel treats its own arguments (i.e. no error recovery). Signed-off-by: Daniel Thompson Cc: stable@vger.kernel.org Signed-off-by: Rusty Russell --- init/main.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/init/main.c b/init/main.c index 800a0daede7e..321d0ceb26d3 100644 --- a/init/main.c +++ b/init/main.c @@ -544,7 +544,7 @@ asmlinkage __visible void __init start_kernel(void) static_command_line, __start___param, __stop___param - __start___param, -1, -1, &unknown_bootoption); - if (after_dashes) + if (!IS_ERR_OR_NULL(after_dashes)) parse_args("Setting init args", after_dashes, NULL, 0, -1, -1, set_init_arg); From e9d784d535e43777f9ff44d7e582946f4776c000 Mon Sep 17 00:00:00 2001 From: Chris Wilson Date: Thu, 6 Nov 2014 08:40:35 +0000 Subject: [PATCH 279/371] drm/i915: Fix obj->map_and_fenceable across tiling changes As obj->map_and_fenceable computation has changed to only be set when the object is bound inside the global GTT (and is suitable aligned to a fence region) we need to accommodate those changes when the tiling is adjusted. The easiest solution is to unbind from the global GTT if we are currently fenceable, but will not be after the tiling change. The bug has been exposed by commit f8fcadba218fe6d23b2e353fea1cf0a4be4c9454 Author: Chris Wilson Date: Fri Oct 31 13:53:52 2014 +0000 drm/i915: Only mark as map-and-fenceable when bound into the GGTT which tried to fix an oversight from commit e6a844687cf929ec053c7578d5ecc794a8a6c5cf Author: Chris Wilson Date: Mon Aug 11 12:00:12 2014 +0200 drm/i915: Force CPU relocations if not GTT mapped which changed the handling of obj->map_and_fenceable. Note that the alignment check is a vestige from our attempts to reduce the alignment requirements of tiled but unfenced buffers on gen2/3. Also, that was when unbinding from the GTT meant UC writes and clflushing, so we went to great pains to avoid such. That leaves the actual bug of setting map_and_fenceable to true if we're not bound to ggtt, which violates the change introduced in the above patch. Unbinding in that case really looks like the simplest and safest option, we have to do it anyway. Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=85896 Testcase: igt/gem_concurrent_blit/gttX* Tested-by: huax.lu@intel.com Signed-off-by: Chris Wilson Reviewed-by: Daniel Vetter Tested-by: Valtteri Rantala [Jani: amend commit message per input from Daniel and bisect result from Valtteri] Signed-off-by: Jani Nikula --- drivers/gpu/drm/i915/i915_gem_tiling.c | 19 +++---------------- 1 file changed, 3 insertions(+), 16 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_gem_tiling.c b/drivers/gpu/drm/i915/i915_gem_tiling.c index 2cefb597df6d..2b1eaa29ada4 100644 --- a/drivers/gpu/drm/i915/i915_gem_tiling.c +++ b/drivers/gpu/drm/i915/i915_gem_tiling.c @@ -364,22 +364,9 @@ i915_gem_set_tiling(struct drm_device *dev, void *data, * has to also include the unfenced register the GPU uses * whilst executing a fenced command for an untiled object. */ - - obj->map_and_fenceable = - !i915_gem_obj_ggtt_bound(obj) || - (i915_gem_obj_ggtt_offset(obj) + - obj->base.size <= dev_priv->gtt.mappable_end && - i915_gem_object_fence_ok(obj, args->tiling_mode)); - - /* Rebind if we need a change of alignment */ - if (!obj->map_and_fenceable) { - u32 unfenced_align = - i915_gem_get_gtt_alignment(dev, obj->base.size, - args->tiling_mode, - false); - if (i915_gem_obj_ggtt_offset(obj) & (unfenced_align - 1)) - ret = i915_gem_object_ggtt_unbind(obj); - } + if (obj->map_and_fenceable && + !i915_gem_object_fence_ok(obj, args->tiling_mode)) + ret = i915_gem_object_ggtt_unbind(obj); if (ret == 0) { obj->fence_dirty = From 1a290581ded60e87276741f8ca97b161d2b226fc Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Tue, 11 Nov 2014 15:45:57 +0100 Subject: [PATCH 280/371] ALSA: usb-audio: Fix memory leak in FTU quirk M-audio FastTrack Ultra quirk doesn't release the kzalloc'ed memory. This patch adds the private_free callback to release it properly. Cc: Signed-off-by: Takashi Iwai --- sound/usb/mixer_quirks.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/sound/usb/mixer_quirks.c b/sound/usb/mixer_quirks.c index f119a41ed9a9..7c83bab69dee 100644 --- a/sound/usb/mixer_quirks.c +++ b/sound/usb/mixer_quirks.c @@ -885,6 +885,11 @@ static int snd_ftu_eff_switch_put(struct snd_kcontrol *kctl, return changed; } +static void kctl_private_value_free(struct snd_kcontrol *kctl) +{ + kfree((void *)kctl->private_value); +} + static int snd_ftu_create_effect_switch(struct usb_mixer_interface *mixer, int validx, int bUnitID) { @@ -919,6 +924,7 @@ static int snd_ftu_create_effect_switch(struct usb_mixer_interface *mixer, return -ENOMEM; } + kctl->private_free = kctl_private_value_free; err = snd_ctl_add(mixer->chip->card, kctl); if (err < 0) return err; From f4a1edd56120249198073aa4a373b77e3700ac8f Mon Sep 17 00:00:00 2001 From: Or Gerlitz Date: Sun, 9 Nov 2014 14:25:39 +0200 Subject: [PATCH 281/371] net/mlx4_en: Advertize encapsulation offloads features only when VXLAN tunnel is set Currenly we only support Large-Send and TX checksum offloads for encapsulated traffic of type VXLAN. We must make sure to advertize these offloads up to the stack only when VXLAN tunnel is set. Failing to do so, would mislead the the networking stack to assume that the driver can offload the internal TX checksum for GRE packets and other buggy schemes. Reported-by: Florian Westphal Signed-off-by: Or Gerlitz Signed-off-by: David S. Miller --- .../net/ethernet/mellanox/mlx4/en_netdev.c | 22 ++++++++++++------- 1 file changed, 14 insertions(+), 8 deletions(-) diff --git a/drivers/net/ethernet/mellanox/mlx4/en_netdev.c b/drivers/net/ethernet/mellanox/mlx4/en_netdev.c index f3032fec8fce..02266e3de514 100644 --- a/drivers/net/ethernet/mellanox/mlx4/en_netdev.c +++ b/drivers/net/ethernet/mellanox/mlx4/en_netdev.c @@ -2281,8 +2281,16 @@ static void mlx4_en_add_vxlan_offloads(struct work_struct *work) ret = mlx4_SET_PORT_VXLAN(priv->mdev->dev, priv->port, VXLAN_STEER_BY_OUTER_MAC, 1); out: - if (ret) + if (ret) { en_err(priv, "failed setting L2 tunnel configuration ret %d\n", ret); + return; + } + + /* set offloads */ + priv->dev->hw_enc_features |= NETIF_F_IP_CSUM | NETIF_F_RXCSUM | + NETIF_F_TSO | NETIF_F_GSO_UDP_TUNNEL; + priv->dev->hw_features |= NETIF_F_GSO_UDP_TUNNEL; + priv->dev->features |= NETIF_F_GSO_UDP_TUNNEL; } static void mlx4_en_del_vxlan_offloads(struct work_struct *work) @@ -2290,6 +2298,11 @@ static void mlx4_en_del_vxlan_offloads(struct work_struct *work) int ret; struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv, vxlan_del_task); + /* unset offloads */ + priv->dev->hw_enc_features &= ~(NETIF_F_IP_CSUM | NETIF_F_RXCSUM | + NETIF_F_TSO | NETIF_F_GSO_UDP_TUNNEL); + priv->dev->hw_features &= ~NETIF_F_GSO_UDP_TUNNEL; + priv->dev->features &= ~NETIF_F_GSO_UDP_TUNNEL; ret = mlx4_SET_PORT_VXLAN(priv->mdev->dev, priv->port, VXLAN_STEER_BY_OUTER_MAC, 0); @@ -2568,13 +2581,6 @@ int mlx4_en_init_netdev(struct mlx4_en_dev *mdev, int port, if (mdev->dev->caps.steering_mode != MLX4_STEERING_MODE_A0) dev->priv_flags |= IFF_UNICAST_FLT; - if (mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) { - dev->hw_enc_features |= NETIF_F_IP_CSUM | NETIF_F_RXCSUM | - NETIF_F_TSO | NETIF_F_GSO_UDP_TUNNEL; - dev->hw_features |= NETIF_F_GSO_UDP_TUNNEL; - dev->features |= NETIF_F_GSO_UDP_TUNNEL; - } - mdev->pndev[port] = dev; netif_carrier_off(dev); From aab18da44f243cf59b4dee335ea50b32f529b5b0 Mon Sep 17 00:00:00 2001 From: Michael Ellerman Date: Fri, 31 Oct 2014 17:45:22 +1100 Subject: [PATCH 282/371] hwmon: (ibmpowernv) Quieten when probing finds no device Because we build kernels with drivers built in for many platforms, it's normal for the ibmpowernv driver to be loaded on systems that don't have the appropriate hardware. Currently the driver spams the log with: ibmpowernv ibmpowernv.0: Opal node 'sensors' not found ibmpowernv: Platfrom driver probe failed But there is no error, this machine is not a powernv and doesn't have the hardware. So change the sensors message to dev_dbg(), and only print an error about the probe failing if it's not ENODEV. Also fix the spelling of "Platfrom" and print the actual error value. Signed-off-by: Michael Ellerman Reviewed-by: Jean Delvare Signed-off-by: Guenter Roeck --- drivers/hwmon/ibmpowernv.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/hwmon/ibmpowernv.c b/drivers/hwmon/ibmpowernv.c index d2bf2c97ae70..6a30eeea94be 100644 --- a/drivers/hwmon/ibmpowernv.c +++ b/drivers/hwmon/ibmpowernv.c @@ -181,7 +181,7 @@ static int __init populate_attr_groups(struct platform_device *pdev) opal = of_find_node_by_path("/ibm,opal/sensors"); if (!opal) { - dev_err(&pdev->dev, "Opal node 'sensors' not found\n"); + dev_dbg(&pdev->dev, "Opal node 'sensors' not found\n"); return -ENODEV; } @@ -335,7 +335,9 @@ static int __init ibmpowernv_init(void) err = platform_driver_probe(&ibmpowernv_driver, ibmpowernv_probe); if (err) { - pr_err("Platfrom driver probe failed\n"); + if (err != -ENODEV) + pr_err("Platform driver probe failed (%d)\n", err); + goto exit_device_del; } From 48b9d5b4f408259cd6800c4b17d4fe5025435da2 Mon Sep 17 00:00:00 2001 From: Kamil Debski Date: Mon, 3 Nov 2014 15:42:55 +0100 Subject: [PATCH 283/371] hwmon: (pwm-fan) Fix suspend/resume behavior The state of a PWM output is not clearly defined after resume. Some PWM drivers do not restore the duty cycle upon resume, thus it is necessary to manually restore the correct value. Signed-off-by: Kamil Debski Signed-off-by: Guenter Roeck --- drivers/hwmon/pwm-fan.c | 13 ++++++++++--- 1 file changed, 10 insertions(+), 3 deletions(-) diff --git a/drivers/hwmon/pwm-fan.c b/drivers/hwmon/pwm-fan.c index 823c877a1ec0..1991d9032c38 100644 --- a/drivers/hwmon/pwm-fan.c +++ b/drivers/hwmon/pwm-fan.c @@ -161,10 +161,17 @@ static int pwm_fan_suspend(struct device *dev) static int pwm_fan_resume(struct device *dev) { struct pwm_fan_ctx *ctx = dev_get_drvdata(dev); + unsigned long duty; + int ret; - if (ctx->pwm_value) - return pwm_enable(ctx->pwm); - return 0; + if (ctx->pwm_value == 0) + return 0; + + duty = DIV_ROUND_UP(ctx->pwm_value * (ctx->pwm->period - 1), MAX_PWM); + ret = pwm_config(ctx->pwm, duty, ctx->pwm->period); + if (ret) + return ret; + return pwm_enable(ctx->pwm); } #endif From 0bd52941586b3b59ab9b6e89e55b2dc9e2680de9 Mon Sep 17 00:00:00 2001 From: Aravind Gopalakrishnan Date: Tue, 4 Nov 2014 11:49:02 -0600 Subject: [PATCH 284/371] hwmon: (fam15h_power) Fix NB device ID for F16h M30h F3 device ID is wrongly included in fam15h_power_id_table for F16h M30h. It should be F4 device ID. Fix this. Signed-off-by: Aravind Gopalakrishnan Signed-off-by: Guenter Roeck --- drivers/hwmon/fam15h_power.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/hwmon/fam15h_power.c b/drivers/hwmon/fam15h_power.c index fcdbde4ec692..3057dfc7e3bc 100644 --- a/drivers/hwmon/fam15h_power.c +++ b/drivers/hwmon/fam15h_power.c @@ -234,7 +234,7 @@ static const struct pci_device_id fam15h_power_id_table[] = { { PCI_VDEVICE(AMD, PCI_DEVICE_ID_AMD_15H_NB_F4) }, { PCI_VDEVICE(AMD, PCI_DEVICE_ID_AMD_15H_M30H_NB_F4) }, { PCI_VDEVICE(AMD, PCI_DEVICE_ID_AMD_16H_NB_F4) }, - { PCI_VDEVICE(AMD, PCI_DEVICE_ID_AMD_16H_M30H_NB_F3) }, + { PCI_VDEVICE(AMD, PCI_DEVICE_ID_AMD_16H_M30H_NB_F4) }, {} }; MODULE_DEVICE_TABLE(pci, fam15h_power_id_table); From 799b601451b21ebe7af0e6e8f6e2ccd4683c5064 Mon Sep 17 00:00:00 2001 From: Miklos Szeredi Date: Tue, 4 Nov 2014 11:27:12 +0100 Subject: [PATCH 285/371] audit: keep inode pinned Audit rules disappear when an inode they watch is evicted from the cache. This is likely not what we want. The guilty commit is "fsnotify: allow marks to not pin inodes in core", which didn't take into account that audit_tree adds watches with a zero mask. Adding any mask should fix this. Fixes: 90b1e7a57880 ("fsnotify: allow marks to not pin inodes in core") Signed-off-by: Miklos Szeredi Cc: stable@vger.kernel.org # 2.6.36+ Signed-off-by: Paul Moore --- kernel/audit_tree.c | 1 + 1 file changed, 1 insertion(+) diff --git a/kernel/audit_tree.c b/kernel/audit_tree.c index e242e3a9864a..80f29e015570 100644 --- a/kernel/audit_tree.c +++ b/kernel/audit_tree.c @@ -154,6 +154,7 @@ static struct audit_chunk *alloc_chunk(int count) chunk->owners[i].index = i; } fsnotify_init_mark(&chunk->mark, audit_tree_destroy_watch); + chunk->mark.mask = FS_IN_IGNORED; return chunk; } From 5748eb8f8e989a9da1ac7c96dc73d68cbdedf7df Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Mon, 10 Nov 2014 11:50:21 +0100 Subject: [PATCH 286/371] net: ppp: Don't call bpf_prog_create() in ppp_lock In ppp_ioctl(), bpf_prog_create() is called inside ppp_lock, which eventually calls vmalloc() and hits BUG_ON() in vmalloc.c. This patch works around the problem by moving the allocation outside the lock. The bug was revealed by the recent change in net/core/filter.c, as it allocates via vmalloc() instead of kmalloc() now. Reported-and-tested-by: Stefan Seyfried Signed-off-by: Takashi Iwai Signed-off-by: David S. Miller --- drivers/net/ppp/ppp_generic.c | 40 +++++++++++++++++------------------ 1 file changed, 20 insertions(+), 20 deletions(-) diff --git a/drivers/net/ppp/ppp_generic.c b/drivers/net/ppp/ppp_generic.c index 68c3a3f4e0ab..794a47329368 100644 --- a/drivers/net/ppp/ppp_generic.c +++ b/drivers/net/ppp/ppp_generic.c @@ -755,23 +755,23 @@ static long ppp_ioctl(struct file *file, unsigned int cmd, unsigned long arg) err = get_filter(argp, &code); if (err >= 0) { + struct bpf_prog *pass_filter = NULL; struct sock_fprog_kern fprog = { .len = err, .filter = code, }; - ppp_lock(ppp); - if (ppp->pass_filter) { - bpf_prog_destroy(ppp->pass_filter); - ppp->pass_filter = NULL; + err = 0; + if (fprog.filter) + err = bpf_prog_create(&pass_filter, &fprog); + if (!err) { + ppp_lock(ppp); + if (ppp->pass_filter) + bpf_prog_destroy(ppp->pass_filter); + ppp->pass_filter = pass_filter; + ppp_unlock(ppp); } - if (fprog.filter != NULL) - err = bpf_prog_create(&ppp->pass_filter, - &fprog); - else - err = 0; kfree(code); - ppp_unlock(ppp); } break; } @@ -781,23 +781,23 @@ static long ppp_ioctl(struct file *file, unsigned int cmd, unsigned long arg) err = get_filter(argp, &code); if (err >= 0) { + struct bpf_prog *active_filter = NULL; struct sock_fprog_kern fprog = { .len = err, .filter = code, }; - ppp_lock(ppp); - if (ppp->active_filter) { - bpf_prog_destroy(ppp->active_filter); - ppp->active_filter = NULL; + err = 0; + if (fprog.filter) + err = bpf_prog_create(&active_filter, &fprog); + if (!err) { + ppp_lock(ppp); + if (ppp->active_filter) + bpf_prog_destroy(ppp->active_filter); + ppp->active_filter = active_filter; + ppp_unlock(ppp); } - if (fprog.filter != NULL) - err = bpf_prog_create(&ppp->active_filter, - &fprog); - else - err = 0; kfree(code); - ppp_unlock(ppp); } break; } From e40607cbe270a9e8360907cb1e62ddf0736e4864 Mon Sep 17 00:00:00 2001 From: Daniel Borkmann Date: Mon, 10 Nov 2014 17:54:26 +0100 Subject: [PATCH 287/371] net: sctp: fix NULL pointer dereference in af->from_addr_param on malformed packet An SCTP server doing ASCONF will panic on malformed INIT ping-of-death in the form of: ------------ INIT[PARAM: SET_PRIMARY_IP] ------------> While the INIT chunk parameter verification dissects through many things in order to detect malformed input, it misses to actually check parameters inside of parameters. E.g. RFC5061, section 4.2.4 proposes a 'set primary IP address' parameter in ASCONF, which has as a subparameter an address parameter. So an attacker may send a parameter type other than SCTP_PARAM_IPV4_ADDRESS or SCTP_PARAM_IPV6_ADDRESS, param_type2af() will subsequently return 0 and thus sctp_get_af_specific() returns NULL, too, which we then happily dereference unconditionally through af->from_addr_param(). The trace for the log: BUG: unable to handle kernel NULL pointer dereference at 0000000000000078 IP: [] sctp_process_init+0x492/0x990 [sctp] PGD 0 Oops: 0000 [#1] SMP [...] Pid: 0, comm: swapper Not tainted 2.6.32-504.el6.x86_64 #1 Bochs Bochs RIP: 0010:[] [] sctp_process_init+0x492/0x990 [sctp] [...] Call Trace: [] ? sctp_bind_addr_copy+0x5d/0xe0 [sctp] [] sctp_sf_do_5_1B_init+0x21b/0x340 [sctp] [] sctp_do_sm+0x71/0x1210 [sctp] [] ? sctp_endpoint_lookup_assoc+0xc9/0xf0 [sctp] [] sctp_endpoint_bh_rcv+0x116/0x230 [sctp] [] sctp_inq_push+0x56/0x80 [sctp] [] sctp_rcv+0x982/0xa10 [sctp] [] ? ipt_local_in_hook+0x23/0x28 [iptable_filter] [] ? nf_iterate+0x69/0xb0 [] ? ip_local_deliver_finish+0x0/0x2d0 [] ? nf_hook_slow+0x76/0x120 [] ? ip_local_deliver_finish+0x0/0x2d0 [...] A minimal way to address this is to check for NULL as we do on all other such occasions where we know sctp_get_af_specific() could possibly return with NULL. Fixes: d6de3097592b ("[SCTP]: Add the handling of "Set Primary IP Address" parameter to INIT") Signed-off-by: Daniel Borkmann Cc: Vlad Yasevich Acked-by: Neil Horman Signed-off-by: David S. Miller --- net/sctp/sm_make_chunk.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/net/sctp/sm_make_chunk.c b/net/sctp/sm_make_chunk.c index ab734be8cb20..9f32741abb1c 100644 --- a/net/sctp/sm_make_chunk.c +++ b/net/sctp/sm_make_chunk.c @@ -2609,6 +2609,9 @@ do_addr_param: addr_param = param.v + sizeof(sctp_addip_param_t); af = sctp_get_af_specific(param_type2af(param.p->type)); + if (af == NULL) + break; + af->from_addr_param(&addr, addr_param, htons(asoc->peer.port), 0); From 4184b2a79a7612a9272ce20d639934584a1f3786 Mon Sep 17 00:00:00 2001 From: Daniel Borkmann Date: Mon, 10 Nov 2014 18:00:09 +0100 Subject: [PATCH 288/371] net: sctp: fix memory leak in auth key management A very minimal and simple user space application allocating an SCTP socket, setting SCTP_AUTH_KEY setsockopt(2) on it and then closing the socket again will leak the memory containing the authentication key from user space: unreferenced object 0xffff8800837047c0 (size 16): comm "a.out", pid 2789, jiffies 4296954322 (age 192.258s) hex dump (first 16 bytes): 01 00 00 00 04 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: [] kmemleak_alloc+0x4e/0xb0 [] __kmalloc+0xe8/0x270 [] sctp_auth_create_key+0x23/0x50 [sctp] [] sctp_auth_set_key+0xa1/0x140 [sctp] [] sctp_setsockopt+0xd03/0x1180 [sctp] [] sock_common_setsockopt+0x14/0x20 [] SyS_setsockopt+0x71/0xd0 [] system_call_fastpath+0x12/0x17 [] 0xffffffffffffffff This is bad because of two things, we can bring down a machine from user space when auth_enable=1, but also we would leave security sensitive keying material in memory without clearing it after use. The issue is that sctp_auth_create_key() already sets the refcount to 1, but after allocation sctp_auth_set_key() does an additional refcount on it, and thus leaving it around when we free the socket. Fixes: 65b07e5d0d0 ("[SCTP]: API updates to suport SCTP-AUTH extensions.") Signed-off-by: Daniel Borkmann Cc: Vlad Yasevich Acked-by: Neil Horman Signed-off-by: David S. Miller --- net/sctp/auth.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/net/sctp/auth.c b/net/sctp/auth.c index 0e8529113dc5..fb7976aee61c 100644 --- a/net/sctp/auth.c +++ b/net/sctp/auth.c @@ -862,8 +862,6 @@ int sctp_auth_set_key(struct sctp_endpoint *ep, list_add(&cur_key->key_list, sh_keys); cur_key->key = key; - sctp_auth_key_hold(key); - return 0; nomem: if (!replace) From 5337b5b75cd9bd3624a6820e3c2a084d2480061c Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Mon, 10 Nov 2014 17:54:25 -0800 Subject: [PATCH 289/371] ipv6: fix IPV6_PKTINFO with v4 mapped Use IS_ENABLED(CONFIG_IPV6), to enable this code if IPv6 is a module. Signed-off-by: Eric Dumazet Fixes: c8e6ad0829a7 ("ipv6: honor IPV6_PKTINFO with v4 mapped addresses on sendmsg") Acked-by: Hannes Frederic Sowa Signed-off-by: David S. Miller --- net/ipv4/ip_sockglue.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/ipv4/ip_sockglue.c b/net/ipv4/ip_sockglue.c index c373a9ad4555..9daf2177dc00 100644 --- a/net/ipv4/ip_sockglue.c +++ b/net/ipv4/ip_sockglue.c @@ -195,7 +195,7 @@ int ip_cmsg_send(struct net *net, struct msghdr *msg, struct ipcm_cookie *ipc, for (cmsg = CMSG_FIRSTHDR(msg); cmsg; cmsg = CMSG_NXTHDR(msg, cmsg)) { if (!CMSG_OK(msg, cmsg)) return -EINVAL; -#if defined(CONFIG_IPV6) +#if IS_ENABLED(CONFIG_IPV6) if (allow_ipv6 && cmsg->cmsg_level == SOL_IPV6 && cmsg->cmsg_type == IPV6_PKTINFO) { From 79ce0477ffe82e7e49e55179cd176a1c33382744 Mon Sep 17 00:00:00 2001 From: Brian Hill Date: Tue, 11 Nov 2014 13:39:39 -0700 Subject: [PATCH 290/371] net: phy: Correctly handle MII ioctl which changes autonegotiation. When advertised capabilities are changed with mii-tool, such as: mii-tool -A 10baseT the existing handler has two errors. - An actual PHY register value is provided by mii-tool, and this must be mapped to internal state with mii_adv_to_ethtool_adv_t(). - The PHY state machine needs to be told that autonegotiation has again been performed. If not, the MAC will not be notified of the new link speed and duplex, resulting in a possible config mismatch. Signed-off-by: Brian Hill Acked-by: Florian Fainelli Signed-off-by: David S. Miller --- drivers/net/phy/phy.c | 36 ++++++++++++++++++++++++------------ 1 file changed, 24 insertions(+), 12 deletions(-) diff --git a/drivers/net/phy/phy.c b/drivers/net/phy/phy.c index 1dfffdc9dfc3..767cd110f496 100644 --- a/drivers/net/phy/phy.c +++ b/drivers/net/phy/phy.c @@ -352,6 +352,7 @@ int phy_mii_ioctl(struct phy_device *phydev, struct ifreq *ifr, int cmd) { struct mii_ioctl_data *mii_data = if_mii(ifr); u16 val = mii_data->val_in; + bool change_autoneg = false; switch (cmd) { case SIOCGMIIPHY: @@ -367,22 +368,29 @@ int phy_mii_ioctl(struct phy_device *phydev, struct ifreq *ifr, int cmd) if (mii_data->phy_id == phydev->addr) { switch (mii_data->reg_num) { case MII_BMCR: - if ((val & (BMCR_RESET | BMCR_ANENABLE)) == 0) + if ((val & (BMCR_RESET | BMCR_ANENABLE)) == 0) { + if (phydev->autoneg == AUTONEG_ENABLE) + change_autoneg = true; phydev->autoneg = AUTONEG_DISABLE; - else + if (val & BMCR_FULLDPLX) + phydev->duplex = DUPLEX_FULL; + else + phydev->duplex = DUPLEX_HALF; + if (val & BMCR_SPEED1000) + phydev->speed = SPEED_1000; + else if (val & BMCR_SPEED100) + phydev->speed = SPEED_100; + else phydev->speed = SPEED_10; + } + else { + if (phydev->autoneg == AUTONEG_DISABLE) + change_autoneg = true; phydev->autoneg = AUTONEG_ENABLE; - if (!phydev->autoneg && (val & BMCR_FULLDPLX)) - phydev->duplex = DUPLEX_FULL; - else - phydev->duplex = DUPLEX_HALF; - if (!phydev->autoneg && (val & BMCR_SPEED1000)) - phydev->speed = SPEED_1000; - else if (!phydev->autoneg && - (val & BMCR_SPEED100)) - phydev->speed = SPEED_100; + } break; case MII_ADVERTISE: - phydev->advertising = val; + phydev->advertising = mii_adv_to_ethtool_adv_t(val); + change_autoneg = true; break; default: /* do nothing */ @@ -396,6 +404,10 @@ int phy_mii_ioctl(struct phy_device *phydev, struct ifreq *ifr, int cmd) if (mii_data->reg_num == MII_BMCR && val & BMCR_RESET) return phy_init_hw(phydev); + + if (change_autoneg) + return phy_start_aneg(phydev); + return 0; case SIOCSHWTSTAMP: From 67732cd34382066ae5df313b6dad65ab14b9735f Mon Sep 17 00:00:00 2001 From: Ulf Hansson Date: Tue, 11 Nov 2014 11:07:08 +0100 Subject: [PATCH 291/371] PM / Domains: Fix initial default state of the need_restore flag The initial state of the device's need_restore flag should'nt depend on the current state of the PM domain. For example it should be perfectly valid to attach an inactive device to a powered PM domain. The pm_genpd_dev_need_restore() API allow us to update the need_restore flag to somewhat cope with such scenarios. Typically that should have been done from drivers/buses ->probe() since it's those that put the requirements on the value of the need_restore flag. Until recently, the Exynos SOCs were the only user of the pm_genpd_dev_need_restore() API, though invoking it from a centralized location while adding devices to their PM domains. Due to that Exynos now have swithed to the generic OF-based PM domain look-up, it's no longer possible to invoke the API from a centralized location. The reason is because devices are now added to their PM domains during the probe sequence. Commit "ARM: exynos: Move to generic PM domain DT bindings" did the switch for Exynos to the generic OF-based PM domain look-up, but it also removed the call to pm_genpd_dev_need_restore(). This caused a regression for some of the Exynos drivers. To handle things more properly in the generic PM domain, let's change the default initial value of the need_restore flag to reflect that the state is unknown. As soon as some of the runtime PM callbacks gets invoked, update the initial value accordingly. Moreover, since the generic PM domain is verifying that all devices are both runtime PM enabled and suspended, using pm_runtime_suspended() while pm_genpd_poweroff() is invoked from the scheduled work, we can be sure of that the PM domain won't be powering off while having active devices. Do note that, the generic PM domain can still only know about active devices which has been activated through invoking its runtime PM resume callback. In other words, buses/drivers using pm_runtime_set_active() during ->probe() will still suffer from a race condition, potentially probing a device without having its PM domain being powered. That issue will have to be solved using a different approach. This a log from the boot regression for Exynos5, which is being fixed in this patch. ------------[ cut here ]------------ WARNING: CPU: 0 PID: 308 at ../drivers/clk/clk.c:851 clk_disable+0x24/0x30() Modules linked in: CPU: 0 PID: 308 Comm: kworker/0:1 Not tainted 3.18.0-rc3-00569-gbd9449f-dirty #10 Workqueue: pm pm_runtime_work [] (unwind_backtrace) from [] (show_stack+0x10/0x14) [] (show_stack) from [] (dump_stack+0x70/0xbc) [] (dump_stack) from [] (warn_slowpath_common+0x64/0x88) [] (warn_slowpath_common) from [] (warn_slowpath_null+0x1c/0x24) [] (warn_slowpath_null) from [] (clk_disable+0x24/0x30) [] (clk_disable) from [] (gsc_runtime_suspend+0x128/0x160) [] (gsc_runtime_suspend) from [] (pm_generic_runtime_suspend+0x2c/0x38) [] (pm_generic_runtime_suspend) from [] (pm_genpd_default_save_state+0x2c/0x8c) [] (pm_genpd_default_save_state) from [] (pm_genpd_poweroff+0x224/0x3ec) [] (pm_genpd_poweroff) from [] (pm_genpd_runtime_suspend+0x9c/0xcc) [] (pm_genpd_runtime_suspend) from [] (__rpm_callback+0x2c/0x60) [] (__rpm_callback) from [] (rpm_callback+0x20/0x74) [] (rpm_callback) from [] (rpm_suspend+0xd4/0x43c) [] (rpm_suspend) from [] (pm_runtime_work+0x80/0x90) [] (pm_runtime_work) from [] (process_one_work+0x12c/0x314) [] (process_one_work) from [] (worker_thread+0x3c/0x4b0) [] (worker_thread) from [] (kthread+0xcc/0xe8) [] (kthread) from [] (ret_from_fork+0x14/0x3c) ---[ end trace 40cd58bcd6988f12 ]--- Fixes: a4a8c2c4962bb655 (ARM: exynos: Move to generic PM domain DT bindings) Reported-and-tested0by: Sylwester Nawrocki Reviewed-by: Sylwester Nawrocki Reviewed-by: Kevin Hilman Signed-off-by: Ulf Hansson Signed-off-by: Rafael J. Wysocki --- drivers/base/power/domain.c | 38 +++++++++++++++++++++++++++++++------ include/linux/pm_domain.h | 2 +- 2 files changed, 33 insertions(+), 7 deletions(-) diff --git a/drivers/base/power/domain.c b/drivers/base/power/domain.c index b520687046d4..fb83d4acd400 100644 --- a/drivers/base/power/domain.c +++ b/drivers/base/power/domain.c @@ -361,9 +361,19 @@ static int __pm_genpd_save_device(struct pm_domain_data *pdd, struct device *dev = pdd->dev; int ret = 0; - if (gpd_data->need_restore) + if (gpd_data->need_restore > 0) return 0; + /* + * If the value of the need_restore flag is still unknown at this point, + * we trust that pm_genpd_poweroff() has verified that the device is + * already runtime PM suspended. + */ + if (gpd_data->need_restore < 0) { + gpd_data->need_restore = 1; + return 0; + } + mutex_unlock(&genpd->lock); genpd_start_dev(genpd, dev); @@ -373,7 +383,7 @@ static int __pm_genpd_save_device(struct pm_domain_data *pdd, mutex_lock(&genpd->lock); if (!ret) - gpd_data->need_restore = true; + gpd_data->need_restore = 1; return ret; } @@ -389,12 +399,17 @@ static void __pm_genpd_restore_device(struct pm_domain_data *pdd, { struct generic_pm_domain_data *gpd_data = to_gpd_data(pdd); struct device *dev = pdd->dev; - bool need_restore = gpd_data->need_restore; + int need_restore = gpd_data->need_restore; - gpd_data->need_restore = false; + gpd_data->need_restore = 0; mutex_unlock(&genpd->lock); genpd_start_dev(genpd, dev); + + /* + * Call genpd_restore_dev() for recently added devices too (need_restore + * is negative then). + */ if (need_restore) genpd_restore_dev(genpd, dev); @@ -603,6 +618,7 @@ static void genpd_power_off_work_fn(struct work_struct *work) static int pm_genpd_runtime_suspend(struct device *dev) { struct generic_pm_domain *genpd; + struct generic_pm_domain_data *gpd_data; bool (*stop_ok)(struct device *__dev); int ret; @@ -628,6 +644,16 @@ static int pm_genpd_runtime_suspend(struct device *dev) return 0; mutex_lock(&genpd->lock); + + /* + * If we have an unknown state of the need_restore flag, it means none + * of the runtime PM callbacks has been invoked yet. Let's update the + * flag to reflect that the current state is active. + */ + gpd_data = to_gpd_data(dev->power.subsys_data->domain_data); + if (gpd_data->need_restore < 0) + gpd_data->need_restore = 0; + genpd->in_progress++; pm_genpd_poweroff(genpd); genpd->in_progress--; @@ -1442,7 +1468,7 @@ int __pm_genpd_add_device(struct generic_pm_domain *genpd, struct device *dev, mutex_lock(&gpd_data->lock); gpd_data->base.dev = dev; list_add_tail(&gpd_data->base.list_node, &genpd->dev_list); - gpd_data->need_restore = genpd->status == GPD_STATE_POWER_OFF; + gpd_data->need_restore = -1; gpd_data->td.constraint_changed = true; gpd_data->td.effective_constraint_ns = -1; mutex_unlock(&gpd_data->lock); @@ -1546,7 +1572,7 @@ void pm_genpd_dev_need_restore(struct device *dev, bool val) psd = dev_to_psd(dev); if (psd && psd->domain_data) - to_gpd_data(psd->domain_data)->need_restore = val; + to_gpd_data(psd->domain_data)->need_restore = val ? 1 : 0; spin_unlock_irqrestore(&dev->power.lock, flags); } diff --git a/include/linux/pm_domain.h b/include/linux/pm_domain.h index b3ed7766a291..2e0e06daf8c0 100644 --- a/include/linux/pm_domain.h +++ b/include/linux/pm_domain.h @@ -106,7 +106,7 @@ struct generic_pm_domain_data { struct notifier_block nb; struct mutex lock; unsigned int refcount; - bool need_restore; + int need_restore; }; #ifdef CONFIG_PM_GENERIC_DOMAINS From 48eb5b9c3dd2768b6a4de9c1eab606820fd84192 Mon Sep 17 00:00:00 2001 From: Daniel Borkmann Date: Tue, 11 Nov 2014 10:22:05 -0800 Subject: [PATCH 292/371] ixgbe: phy: fix uninitialized status in ixgbe_setup_phy_link_tnx Status variable is never initialized, can carry an arbitrary value on the stack and thus may let the function fail. Fixes: e90dd2645664 ("ixgbe: Make return values more direct") Signed-off-by: Daniel Borkmann Acked-by: Emil Tantilov Signed-off-by: Jeff Kirsher Signed-off-by: David S. Miller --- drivers/net/ethernet/intel/ixgbe/ixgbe_phy.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_phy.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_phy.c index d47b19f27c35..28b81ae09b5a 100644 --- a/drivers/net/ethernet/intel/ixgbe/ixgbe_phy.c +++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_phy.c @@ -635,7 +635,6 @@ s32 ixgbe_check_phy_link_tnx(struct ixgbe_hw *hw, ixgbe_link_speed *speed, **/ s32 ixgbe_setup_phy_link_tnx(struct ixgbe_hw *hw) { - s32 status; u16 autoneg_reg = IXGBE_MII_AUTONEG_REG; bool autoneg = false; ixgbe_link_speed speed; @@ -700,8 +699,7 @@ s32 ixgbe_setup_phy_link_tnx(struct ixgbe_hw *hw) hw->phy.ops.write_reg(hw, MDIO_CTRL1, MDIO_MMD_AN, autoneg_reg); - - return status; + return 0; } /** From 1c9498425453bb65ef339a57705c5ef59fe1541d Mon Sep 17 00:00:00 2001 From: Dave Airlie Date: Tue, 11 Nov 2014 09:16:15 +1000 Subject: [PATCH 293/371] drm/radeon: add locking around atombios scratch space usage While developing MST support I noticed I often got the wrong data back from a transaction, in a racy fashion. I noticed the scratch space wasn't locked against concurrent users. Based on a patch by Alex, but I've made it a bit more obvious when things are locked. Signed-off-by: Dave Airlie Signed-off-by: Alex Deucher Cc: stable@vger.kernel.org --- drivers/gpu/drm/radeon/atom.c | 11 ++++++++++- drivers/gpu/drm/radeon/atom.h | 2 ++ drivers/gpu/drm/radeon/atombios_dp.c | 4 +++- drivers/gpu/drm/radeon/atombios_i2c.c | 4 +++- drivers/gpu/drm/radeon/radeon_device.c | 1 + 5 files changed, 19 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/radeon/atom.c b/drivers/gpu/drm/radeon/atom.c index 15da7ef344a4..ec1593a6a561 100644 --- a/drivers/gpu/drm/radeon/atom.c +++ b/drivers/gpu/drm/radeon/atom.c @@ -1217,7 +1217,7 @@ free: return ret; } -int atom_execute_table(struct atom_context *ctx, int index, uint32_t * params) +int atom_execute_table_scratch_unlocked(struct atom_context *ctx, int index, uint32_t * params) { int r; @@ -1238,6 +1238,15 @@ int atom_execute_table(struct atom_context *ctx, int index, uint32_t * params) return r; } +int atom_execute_table(struct atom_context *ctx, int index, uint32_t * params) +{ + int r; + mutex_lock(&ctx->scratch_mutex); + r = atom_execute_table_scratch_unlocked(ctx, index, params); + mutex_unlock(&ctx->scratch_mutex); + return r; +} + static int atom_iio_len[] = { 1, 2, 3, 3, 3, 3, 4, 4, 4, 3 }; static void atom_index_iio(struct atom_context *ctx, int base) diff --git a/drivers/gpu/drm/radeon/atom.h b/drivers/gpu/drm/radeon/atom.h index feba6b8d36b3..6d014ddb6b78 100644 --- a/drivers/gpu/drm/radeon/atom.h +++ b/drivers/gpu/drm/radeon/atom.h @@ -125,6 +125,7 @@ struct card_info { struct atom_context { struct card_info *card; struct mutex mutex; + struct mutex scratch_mutex; void *bios; uint32_t cmd_table, data_table; uint16_t *iio; @@ -145,6 +146,7 @@ extern int atom_debug; struct atom_context *atom_parse(struct card_info *, void *); int atom_execute_table(struct atom_context *, int, uint32_t *); +int atom_execute_table_scratch_unlocked(struct atom_context *, int, uint32_t *); int atom_asic_init(struct atom_context *); void atom_destroy(struct atom_context *); bool atom_parse_data_header(struct atom_context *ctx, int index, uint16_t *size, diff --git a/drivers/gpu/drm/radeon/atombios_dp.c b/drivers/gpu/drm/radeon/atombios_dp.c index 95d5d4ab3335..11ba9d21b89b 100644 --- a/drivers/gpu/drm/radeon/atombios_dp.c +++ b/drivers/gpu/drm/radeon/atombios_dp.c @@ -100,6 +100,7 @@ static int radeon_process_aux_ch(struct radeon_i2c_chan *chan, memset(&args, 0, sizeof(args)); mutex_lock(&chan->mutex); + mutex_lock(&rdev->mode_info.atom_context->scratch_mutex); base = (unsigned char *)(rdev->mode_info.atom_context->scratch + 1); @@ -113,7 +114,7 @@ static int radeon_process_aux_ch(struct radeon_i2c_chan *chan, if (ASIC_IS_DCE4(rdev)) args.v2.ucHPD_ID = chan->rec.hpd; - atom_execute_table(rdev->mode_info.atom_context, index, (uint32_t *)&args); + atom_execute_table_scratch_unlocked(rdev->mode_info.atom_context, index, (uint32_t *)&args); *ack = args.v1.ucReplyStatus; @@ -147,6 +148,7 @@ static int radeon_process_aux_ch(struct radeon_i2c_chan *chan, r = recv_bytes; done: + mutex_unlock(&rdev->mode_info.atom_context->scratch_mutex); mutex_unlock(&chan->mutex); return r; diff --git a/drivers/gpu/drm/radeon/atombios_i2c.c b/drivers/gpu/drm/radeon/atombios_i2c.c index 9c570fb15b8c..4157780585a0 100644 --- a/drivers/gpu/drm/radeon/atombios_i2c.c +++ b/drivers/gpu/drm/radeon/atombios_i2c.c @@ -48,6 +48,7 @@ static int radeon_process_i2c_ch(struct radeon_i2c_chan *chan, memset(&args, 0, sizeof(args)); mutex_lock(&chan->mutex); + mutex_lock(&rdev->mode_info.atom_context->scratch_mutex); base = (unsigned char *)rdev->mode_info.atom_context->scratch; @@ -82,7 +83,7 @@ static int radeon_process_i2c_ch(struct radeon_i2c_chan *chan, args.ucSlaveAddr = slave_addr << 1; args.ucLineNumber = chan->rec.i2c_id; - atom_execute_table(rdev->mode_info.atom_context, index, (uint32_t *)&args); + atom_execute_table_scratch_unlocked(rdev->mode_info.atom_context, index, (uint32_t *)&args); /* error */ if (args.ucStatus != HW_ASSISTED_I2C_STATUS_SUCCESS) { @@ -95,6 +96,7 @@ static int radeon_process_i2c_ch(struct radeon_i2c_chan *chan, radeon_atom_copy_swap(buf, base, num, false); done: + mutex_unlock(&rdev->mode_info.atom_context->scratch_mutex); mutex_unlock(&chan->mutex); return r; diff --git a/drivers/gpu/drm/radeon/radeon_device.c b/drivers/gpu/drm/radeon/radeon_device.c index ea2676954dde..995a8b1770dd 100644 --- a/drivers/gpu/drm/radeon/radeon_device.c +++ b/drivers/gpu/drm/radeon/radeon_device.c @@ -952,6 +952,7 @@ int radeon_atombios_init(struct radeon_device *rdev) } mutex_init(&rdev->mode_info.atom_context->mutex); + mutex_init(&rdev->mode_info.atom_context->scratch_mutex); radeon_atom_initialize_bios_scratch_regs(rdev->ddev); atom_allocate_fb_scratch(rdev->mode_info.atom_context); return 0; From 93ecd2607f55f99ec0022f53f8224566c8ec797f Mon Sep 17 00:00:00 2001 From: Stefan Wahren Date: Tue, 11 Nov 2014 22:38:00 +0000 Subject: [PATCH 294/371] net: qualcomm: Fix dependency This patch removes the dependency of the VENDOR entry and fixes the QCA7000 one. Signed-off-by: Stefan Wahren Signed-off-by: David S. Miller --- drivers/net/ethernet/qualcomm/Kconfig | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/net/ethernet/qualcomm/Kconfig b/drivers/net/ethernet/qualcomm/Kconfig index f3a47147937d..9a49f42ac2ba 100644 --- a/drivers/net/ethernet/qualcomm/Kconfig +++ b/drivers/net/ethernet/qualcomm/Kconfig @@ -5,7 +5,6 @@ config NET_VENDOR_QUALCOMM bool "Qualcomm devices" default y - depends on SPI_MASTER && OF_GPIO ---help--- If you have a network (Ethernet) card belonging to this class, say Y and read the Ethernet-HOWTO, available from @@ -20,7 +19,7 @@ if NET_VENDOR_QUALCOMM config QCA7000 tristate "Qualcomm Atheros QCA7000 support" - depends on SPI_MASTER && OF_GPIO + depends on SPI_MASTER && OF ---help--- This SPI protocol driver supports the Qualcomm Atheros QCA7000. From c96e731c93ff0c9f53442c11c68e50fd07929d27 Mon Sep 17 00:00:00 2001 From: Florian Fainelli Date: Mon, 10 Nov 2014 18:06:20 -0800 Subject: [PATCH 295/371] net: bcmgenet: connect and disconnect from the PHY state machine phy_disconnect() is the only way to guarantee that we are not going to schedule more work on the PHY state machine workqueue for that particular PHY device. This fixes an issue where a network interface was suspended prior to a system suspend/resume cycle and would then be resumed as part of mdio_bus_resume(), since the GENET interface clocks would have been disabled, this basically resulted in bus errors to appear since we are invoking the GENET driver adjust_link() callback. Fixes: b6e978e50444 ("net: bcmgenet: add suspend/resume callbacks") Signed-off-by: Florian Fainelli Signed-off-by: David S. Miller --- drivers/net/ethernet/broadcom/genet/bcmgenet.c | 6 ++++++ drivers/net/ethernet/broadcom/genet/bcmgenet.h | 1 + drivers/net/ethernet/broadcom/genet/bcmmii.c | 2 +- 3 files changed, 8 insertions(+), 1 deletion(-) diff --git a/drivers/net/ethernet/broadcom/genet/bcmgenet.c b/drivers/net/ethernet/broadcom/genet/bcmgenet.c index fdc9ec09e453..34055fd59c74 100644 --- a/drivers/net/ethernet/broadcom/genet/bcmgenet.c +++ b/drivers/net/ethernet/broadcom/genet/bcmgenet.c @@ -2140,6 +2140,9 @@ static int bcmgenet_open(struct net_device *dev) goto err_irq0; } + phy_connect_direct(dev, priv->phydev, bcmgenet_mii_setup, + priv->phy_interface); + bcmgenet_netif_start(dev); return 0; @@ -2184,6 +2187,9 @@ static int bcmgenet_close(struct net_device *dev) bcmgenet_netif_stop(dev); + /* Really kill the PHY state machine and disconnect from it */ + phy_disconnect(priv->phydev); + /* Disable MAC receive */ umac_enable_set(priv, CMD_RX_EN, false); diff --git a/drivers/net/ethernet/broadcom/genet/bcmgenet.h b/drivers/net/ethernet/broadcom/genet/bcmgenet.h index dbf524ea3b19..44b55b8c220f 100644 --- a/drivers/net/ethernet/broadcom/genet/bcmgenet.h +++ b/drivers/net/ethernet/broadcom/genet/bcmgenet.h @@ -620,6 +620,7 @@ int bcmgenet_mii_init(struct net_device *dev); int bcmgenet_mii_config(struct net_device *dev); void bcmgenet_mii_exit(struct net_device *dev); void bcmgenet_mii_reset(struct net_device *dev); +void bcmgenet_mii_setup(struct net_device *dev); /* Wake-on-LAN routines */ void bcmgenet_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol); diff --git a/drivers/net/ethernet/broadcom/genet/bcmmii.c b/drivers/net/ethernet/broadcom/genet/bcmmii.c index 9ff799a9f801..9c5fee782ccf 100644 --- a/drivers/net/ethernet/broadcom/genet/bcmmii.c +++ b/drivers/net/ethernet/broadcom/genet/bcmmii.c @@ -77,7 +77,7 @@ static int bcmgenet_mii_write(struct mii_bus *bus, int phy_id, /* setup netdev link state when PHY link status change and * update UMAC and RGMII block when link up */ -static void bcmgenet_mii_setup(struct net_device *dev) +void bcmgenet_mii_setup(struct net_device *dev) { struct bcmgenet_priv *priv = netdev_priv(dev); struct phy_device *phydev = priv->phydev; From dbd479db79572067a4c031f84c204ba30d0256ef Mon Sep 17 00:00:00 2001 From: Florian Fainelli Date: Mon, 10 Nov 2014 18:06:21 -0800 Subject: [PATCH 296/371] net: bcmgenet: apply MII configuration in bcmgenet_open() In case an interface has been brought down before entering S3, and then brought up out of S3, all the initialization done during bcmgenet_probe() by bcmgenet_mii_init() calling bcmgenet_mii_config() is just lost since register contents are restored to their reset values. Re-apply this configuration anytime we call bcmgenet_open() to make sure our port multiplexer is properly configured to match the PHY interface. Since we are now calling bcmgenet_mii_config() everytime bcmgenet_open() is called, make sure we only print the message during initialization time not to pollute the console. Fixes: b6e978e50444 ("net: bcmgenet: add suspend/resume callbacks") Fixes: 1c1008c793fa4 ("net: bcmgenet: add main driver file") Signed-off-by: Florian Fainelli Signed-off-by: David S. Miller --- drivers/net/ethernet/broadcom/genet/bcmgenet.c | 5 ++++- drivers/net/ethernet/broadcom/genet/bcmgenet.h | 2 +- drivers/net/ethernet/broadcom/genet/bcmmii.c | 7 ++++--- 3 files changed, 9 insertions(+), 5 deletions(-) diff --git a/drivers/net/ethernet/broadcom/genet/bcmgenet.c b/drivers/net/ethernet/broadcom/genet/bcmgenet.c index 34055fd59c74..da1a2500c91c 100644 --- a/drivers/net/ethernet/broadcom/genet/bcmgenet.c +++ b/drivers/net/ethernet/broadcom/genet/bcmgenet.c @@ -2140,6 +2140,9 @@ static int bcmgenet_open(struct net_device *dev) goto err_irq0; } + /* Re-configure the port multiplexer towards the PHY device */ + bcmgenet_mii_config(priv->dev, false); + phy_connect_direct(dev, priv->phydev, bcmgenet_mii_setup, priv->phy_interface); @@ -2691,7 +2694,7 @@ static int bcmgenet_resume(struct device *d) phy_init_hw(priv->phydev); /* Speed settings must be restored */ - bcmgenet_mii_config(priv->dev); + bcmgenet_mii_config(priv->dev, false); /* disable ethernet MAC while updating its registers */ umac_enable_set(priv, CMD_TX_EN | CMD_RX_EN, false); diff --git a/drivers/net/ethernet/broadcom/genet/bcmgenet.h b/drivers/net/ethernet/broadcom/genet/bcmgenet.h index 44b55b8c220f..31b2da5f9b82 100644 --- a/drivers/net/ethernet/broadcom/genet/bcmgenet.h +++ b/drivers/net/ethernet/broadcom/genet/bcmgenet.h @@ -617,7 +617,7 @@ GENET_IO_MACRO(rbuf, GENET_RBUF_OFF); /* MDIO routines */ int bcmgenet_mii_init(struct net_device *dev); -int bcmgenet_mii_config(struct net_device *dev); +int bcmgenet_mii_config(struct net_device *dev, bool init); void bcmgenet_mii_exit(struct net_device *dev); void bcmgenet_mii_reset(struct net_device *dev); void bcmgenet_mii_setup(struct net_device *dev); diff --git a/drivers/net/ethernet/broadcom/genet/bcmmii.c b/drivers/net/ethernet/broadcom/genet/bcmmii.c index 9c5fee782ccf..933cd7e7cd33 100644 --- a/drivers/net/ethernet/broadcom/genet/bcmmii.c +++ b/drivers/net/ethernet/broadcom/genet/bcmmii.c @@ -211,7 +211,7 @@ static void bcmgenet_moca_phy_setup(struct bcmgenet_priv *priv) bcmgenet_sys_writel(priv, reg, SYS_PORT_CTRL); } -int bcmgenet_mii_config(struct net_device *dev) +int bcmgenet_mii_config(struct net_device *dev, bool init) { struct bcmgenet_priv *priv = netdev_priv(dev); struct phy_device *phydev = priv->phydev; @@ -298,7 +298,8 @@ int bcmgenet_mii_config(struct net_device *dev) return -EINVAL; } - dev_info(kdev, "configuring instance for %s\n", phy_name); + if (init) + dev_info(kdev, "configuring instance for %s\n", phy_name); return 0; } @@ -350,7 +351,7 @@ static int bcmgenet_mii_probe(struct net_device *dev) * PHY speed which is needed for bcmgenet_mii_config() to configure * things appropriately. */ - ret = bcmgenet_mii_config(dev); + ret = bcmgenet_mii_config(dev, true); if (ret) { phy_disconnect(priv->phydev); return ret; From 7f60dcaaf91e911002007c7ae885ff6ef0f36c0d Mon Sep 17 00:00:00 2001 From: Ming Lei Date: Wed, 12 Nov 2014 00:15:41 +0800 Subject: [PATCH 297/371] block: blk-merge: fix blk_recount_segments() For cloned bio, bio->bi_vcnt can't be used at all, and we have resort to bio_segments() to figure out how many segment there are in the bio. Signed-off-by: Ming Lei Signed-off-by: Jens Axboe --- block/blk-merge.c | 19 +++++++++++-------- 1 file changed, 11 insertions(+), 8 deletions(-) diff --git a/block/blk-merge.c b/block/blk-merge.c index b3ac40aef46b..89b97b5e0881 100644 --- a/block/blk-merge.c +++ b/block/blk-merge.c @@ -97,19 +97,22 @@ void blk_recalc_rq_segments(struct request *rq) void blk_recount_segments(struct request_queue *q, struct bio *bio) { - bool no_sg_merge = !!test_bit(QUEUE_FLAG_NO_SG_MERGE, - &q->queue_flags); - bool merge_not_need = bio->bi_vcnt < queue_max_segments(q); + unsigned short seg_cnt; - if (no_sg_merge && !bio_flagged(bio, BIO_CLONED) && - merge_not_need) - bio->bi_phys_segments = bio->bi_vcnt; + /* estimate segment number by bi_vcnt for non-cloned bio */ + if (bio_flagged(bio, BIO_CLONED)) + seg_cnt = bio_segments(bio); + else + seg_cnt = bio->bi_vcnt; + + if (test_bit(QUEUE_FLAG_NO_SG_MERGE, &q->queue_flags) && + (seg_cnt < queue_max_segments(q))) + bio->bi_phys_segments = seg_cnt; else { struct bio *nxt = bio->bi_next; bio->bi_next = NULL; - bio->bi_phys_segments = __blk_recalc_rq_segments(q, bio, - no_sg_merge && merge_not_need); + bio->bi_phys_segments = __blk_recalc_rq_segments(q, bio, false); bio->bi_next = nxt; } From fbf8e7211ac7858d3df4a4203c18da7a58560784 Mon Sep 17 00:00:00 2001 From: Shuah Khan Date: Tue, 11 Nov 2014 10:04:13 -0700 Subject: [PATCH 298/371] selftests/net: psock_fanout seg faults in sock_fanout_read_ring() The while loop in sock_fanout_read_ring() checks mmap region bounds after access, causing it to segfault. Fix it to check count before accessing header->tp_status. This problem can be reproduced consistently when the test in run as follows: make -C tools/testing/selftests TARGETS=net run_tests or make run_tests from tools/testing/selftests or make run_test from tools/testing/selftests/net Signed-off-by: Shuah Khan Signed-off-by: David S. Miller --- tools/testing/selftests/net/psock_fanout.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/testing/selftests/net/psock_fanout.c b/tools/testing/selftests/net/psock_fanout.c index 57b9c2b7c4ff..6f6733331d95 100644 --- a/tools/testing/selftests/net/psock_fanout.c +++ b/tools/testing/selftests/net/psock_fanout.c @@ -128,7 +128,7 @@ static int sock_fanout_read_ring(int fd, void *ring) struct tpacket2_hdr *header = ring; int count = 0; - while (header->tp_status & TP_STATUS_USER && count < RING_NUM_FRAMES) { + while (count < RING_NUM_FRAMES && header->tp_status & TP_STATUS_USER) { count++; header = ring + (count * getpagesize()); } From 394c97f824fa6b62351fe08b722fff2fc5188bfc Mon Sep 17 00:00:00 2001 From: Kailang Yang Date: Wed, 12 Nov 2014 17:38:08 +0800 Subject: [PATCH 299/371] ALSA: hda/realtek - Change EAPD to verb control This will fix no sound in Linux system after reboot from windows. Change log: - alc662_fill_coef() is replaced with alc_fill_eapd_coef_idx() and move into alc_auto_init_amp(). - For ALC262, ALC267, ALC268, ALC269, ALC233, ALC255, ALC280, ALC282, ALC283, ALC284, ALC285, ALC286, ALC288, ALC290, ALC292, ALC293, ALC294, ALC668, ALC888VC, ALC888VD, ALC891, ALC892, ALC898 and ALC1150, add update COEF control for EAPD setting. - Remove alc269_fill_coef() for update EAPD control line. ADDITIONAL NOTE: Many Realtek cdoecs have a COEF bit to switch the master amp control between COEF and EAPD. Windows drivers seem using COEF while we use EAPD, which is more standard. As a result, some system suffer from the silent output when booting after Windows. This patch sets the COEF bits on the relevant codecs properly to switch to EAPD control. Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=87771 Signed-off-by: Kailang Yang Signed-off-by: Takashi Iwai --- sound/pci/hda/patch_realtek.c | 105 ++++++++++++++++++++++++---------- 1 file changed, 75 insertions(+), 30 deletions(-) diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c index da03693099eb..172395465e8a 100644 --- a/sound/pci/hda/patch_realtek.c +++ b/sound/pci/hda/patch_realtek.c @@ -288,6 +288,80 @@ static void alc880_unsol_event(struct hda_codec *codec, unsigned int res) snd_hda_jack_unsol_event(codec, res >> 2); } +/* Change EAPD to verb control */ +static void alc_fill_eapd_coef(struct hda_codec *codec) +{ + int coef; + + coef = alc_get_coef0(codec); + + switch (codec->vendor_id) { + case 0x10ec0262: + alc_update_coef_idx(codec, 0x7, 0, 1<<5); + break; + case 0x10ec0267: + case 0x10ec0268: + alc_update_coef_idx(codec, 0x7, 0, 1<<13); + break; + case 0x10ec0269: + if ((coef & 0x00f0) == 0x0010) + alc_update_coef_idx(codec, 0xd, 0, 1<<14); + if ((coef & 0x00f0) == 0x0020) + alc_update_coef_idx(codec, 0x4, 1<<15, 0); + if ((coef & 0x00f0) == 0x0030) + alc_update_coef_idx(codec, 0x10, 1<<9, 0); + break; + case 0x10ec0280: + case 0x10ec0284: + case 0x10ec0290: + case 0x10ec0292: + alc_update_coef_idx(codec, 0x4, 1<<15, 0); + break; + case 0x10ec0233: + case 0x10ec0255: + case 0x10ec0282: + case 0x10ec0283: + case 0x10ec0286: + case 0x10ec0288: + alc_update_coef_idx(codec, 0x10, 1<<9, 0); + break; + case 0x10ec0285: + case 0x10ec0293: + alc_update_coef_idx(codec, 0xa, 1<<13, 0); + break; + case 0x10ec0662: + if ((coef & 0x00f0) == 0x0030) + alc_update_coef_idx(codec, 0x4, 1<<10, 0); /* EAPD Ctrl */ + break; + case 0x10ec0272: + case 0x10ec0273: + case 0x10ec0663: + case 0x10ec0665: + case 0x10ec0670: + case 0x10ec0671: + case 0x10ec0672: + alc_update_coef_idx(codec, 0xd, 0, 1<<14); /* EAPD Ctrl */ + break; + case 0x10ec0668: + alc_update_coef_idx(codec, 0x7, 3<<13, 0); + break; + case 0x10ec0867: + alc_update_coef_idx(codec, 0x4, 1<<10, 0); + break; + case 0x10ec0888: + if ((coef & 0x00f0) == 0x0020 || (coef & 0x00f0) == 0x0030) + alc_update_coef_idx(codec, 0x7, 1<<5, 0); + break; + case 0x10ec0892: + alc_update_coef_idx(codec, 0x7, 1<<5, 0); + break; + case 0x10ec0899: + case 0x10ec0900: + alc_update_coef_idx(codec, 0x7, 1<<1, 0); + break; + } +} + /* additional initialization for ALC888 variants */ static void alc888_coef_init(struct hda_codec *codec) { @@ -339,6 +413,7 @@ static void alc_eapd_shutup(struct hda_codec *codec) /* generic EAPD initialization */ static void alc_auto_init_amp(struct hda_codec *codec, int type) { + alc_fill_eapd_coef(codec); alc_auto_setup_eapd(codec, true); switch (type) { case ALC_INIT_GPIO1: @@ -5212,9 +5287,6 @@ static void alc269_fill_coef(struct hda_codec *codec) } } - /* Class D */ - alc_update_coef_idx(codec, 0xd, 0, 1<<14); - /* HP */ alc_update_coef_idx(codec, 0x4, 0, 1<<11); } @@ -6124,29 +6196,6 @@ static const struct snd_hda_pin_quirk alc662_pin_fixup_tbl[] = { {} }; -static void alc662_fill_coef(struct hda_codec *codec) -{ - int coef; - - coef = alc_get_coef0(codec); - - switch (codec->vendor_id) { - case 0x10ec0662: - if ((coef & 0x00f0) == 0x0030) - alc_update_coef_idx(codec, 0x4, 1<<10, 0); /* EAPD Ctrl */ - break; - case 0x10ec0272: - case 0x10ec0273: - case 0x10ec0663: - case 0x10ec0665: - case 0x10ec0670: - case 0x10ec0671: - case 0x10ec0672: - alc_update_coef_idx(codec, 0xd, 0, 1<<14); /* EAPD Ctrl */ - break; - } -} - /* */ static int patch_alc662(struct hda_codec *codec) @@ -6169,10 +6218,6 @@ static int patch_alc662(struct hda_codec *codec) case 0x10ec0668: spec->init_hook = alc668_restore_default_value; break; - default: - spec->init_hook = alc662_fill_coef; - alc662_fill_coef(codec); - break; } snd_hda_pick_fixup(codec, alc662_fixup_models, From 8c393f9a721c30a030049a680e1bf896669bb279 Mon Sep 17 00:00:00 2001 From: Peng Tao Date: Wed, 5 Nov 2014 22:36:50 +0800 Subject: [PATCH 300/371] nfs: fix pnfs direct write memory leak For pNFS direct writes, layout driver may dynamically allocate ds_cinfo.buckets. So we need to take care to free them when freeing dreq. Ideally this needs to be done inside layout driver where ds_cinfo.buckets are allocated. But buckets are attached to dreq and reused across LD IO iterations. So I feel it's OK to free them in the generic layer. Cc: stable@vger.kernel.org [v3.4+] Signed-off-by: Peng Tao Signed-off-by: Trond Myklebust --- fs/nfs/direct.c | 1 + include/linux/nfs_xdr.h | 11 +++++++++++ 2 files changed, 12 insertions(+) diff --git a/fs/nfs/direct.c b/fs/nfs/direct.c index 20cffc830468..10bf07280f4a 100644 --- a/fs/nfs/direct.c +++ b/fs/nfs/direct.c @@ -266,6 +266,7 @@ static void nfs_direct_req_free(struct kref *kref) { struct nfs_direct_req *dreq = container_of(kref, struct nfs_direct_req, kref); + nfs_free_pnfs_ds_cinfo(&dreq->ds_cinfo); if (dreq->l_ctx != NULL) nfs_put_lock_context(dreq->l_ctx); if (dreq->ctx != NULL) diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h index 983876f24aed..47ebb4fafd87 100644 --- a/include/linux/nfs_xdr.h +++ b/include/linux/nfs_xdr.h @@ -1224,11 +1224,22 @@ struct nfs41_free_stateid_res { unsigned int status; }; +static inline void +nfs_free_pnfs_ds_cinfo(struct pnfs_ds_commit_info *cinfo) +{ + kfree(cinfo->buckets); +} + #else struct pnfs_ds_commit_info { }; +static inline void +nfs_free_pnfs_ds_cinfo(struct pnfs_ds_commit_info *cinfo) +{ +} + #endif /* CONFIG_NFS_V4_1 */ #ifdef CONFIG_NFS_V4_2 From e0d4ed71ca0344494722a041780f004d2bcf0f11 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Fri, 26 Sep 2014 16:02:50 +0200 Subject: [PATCH 301/371] pnfs/blocklayout: serialize GETDEVICEINFO calls The rpc_pipefs code isn't thread safe, leading to occasional use after frees when running xfstests generic/241 (dbench). Signed-off-by: Christoph Hellwig Link: http://lkml.kernel.org/r/1411740170-18611-2-git-send-email-hch@lst.de Cc: stable@vger.kernel.org # 3.17.x Signed-off-by: Trond Myklebust --- fs/nfs/blocklayout/rpc_pipefs.c | 14 +++++++++----- fs/nfs/netns.h | 1 + 2 files changed, 10 insertions(+), 5 deletions(-) diff --git a/fs/nfs/blocklayout/rpc_pipefs.c b/fs/nfs/blocklayout/rpc_pipefs.c index e966c023b1b7..acbf9ca4018c 100644 --- a/fs/nfs/blocklayout/rpc_pipefs.c +++ b/fs/nfs/blocklayout/rpc_pipefs.c @@ -65,17 +65,18 @@ bl_resolve_deviceid(struct nfs_server *server, struct pnfs_block_volume *b, dprintk("%s CREATING PIPEFS MESSAGE\n", __func__); + mutex_lock(&nn->bl_mutex); bl_pipe_msg.bl_wq = &nn->bl_wq; b->simple.len += 4; /* single volume */ if (b->simple.len > PAGE_SIZE) - return -EIO; + goto out_unlock; memset(msg, 0, sizeof(*msg)); msg->len = sizeof(*bl_msg) + b->simple.len; msg->data = kzalloc(msg->len, gfp_mask); if (!msg->data) - goto out; + goto out_free_data; bl_msg = msg->data; bl_msg->type = BL_DEVICE_MOUNT, @@ -87,7 +88,7 @@ bl_resolve_deviceid(struct nfs_server *server, struct pnfs_block_volume *b, rc = rpc_queue_upcall(nn->bl_device_pipe, msg); if (rc < 0) { remove_wait_queue(&nn->bl_wq, &wq); - goto out; + goto out_free_data; } set_current_state(TASK_UNINTERRUPTIBLE); @@ -97,12 +98,14 @@ bl_resolve_deviceid(struct nfs_server *server, struct pnfs_block_volume *b, if (reply->status != BL_DEVICE_REQUEST_PROC) { printk(KERN_WARNING "%s failed to decode device: %d\n", __func__, reply->status); - goto out; + goto out_free_data; } dev = MKDEV(reply->major, reply->minor); -out: +out_free_data: kfree(msg->data); +out_unlock: + mutex_unlock(&nn->bl_mutex); return dev; } @@ -232,6 +235,7 @@ static int nfs4blocklayout_net_init(struct net *net) struct nfs_net *nn = net_generic(net, nfs_net_id); struct dentry *dentry; + mutex_init(&nn->bl_mutex); init_waitqueue_head(&nn->bl_wq); nn->bl_device_pipe = rpc_mkpipe_data(&bl_upcall_ops, 0); if (IS_ERR(nn->bl_device_pipe)) diff --git a/fs/nfs/netns.h b/fs/nfs/netns.h index ef221fb8a183..f0e06e4acbef 100644 --- a/fs/nfs/netns.h +++ b/fs/nfs/netns.h @@ -19,6 +19,7 @@ struct nfs_net { struct rpc_pipe *bl_device_pipe; struct bl_dev_msg bl_mount_reply; wait_queue_head_t bl_wq; + struct mutex bl_mutex; struct list_head nfs_client_list; struct list_head nfs_volume_list; #if IS_ENABLED(CONFIG_NFS_V4) From 16c9914069536c77ed358d94b6e247bdc464b7f0 Mon Sep 17 00:00:00 2001 From: Weston Andros Adamson Date: Mon, 3 Nov 2014 15:19:45 -0500 Subject: [PATCH 302/371] nfs: remove spurious WARN_ON_ONCE in write path This WARN_ON_ONCE was supposed to catch reference counting bugs, but can trigger in inappropriate situations. This was reproducible using NFSv2 on an architecture with 64K pages -- we verified that it was not a reference counting bug and the warning was safe to ignore. Reported-by: Will Deacon Tested-by: Will Deacon Signed-off-by: Weston Andros Adamson Signed-off-by: Trond Myklebust --- fs/nfs/write.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/fs/nfs/write.c b/fs/nfs/write.c index 12493846a2d3..f83b02dc9166 100644 --- a/fs/nfs/write.c +++ b/fs/nfs/write.c @@ -715,8 +715,6 @@ static void nfs_inode_remove_request(struct nfs_page *req) if (test_and_clear_bit(PG_INODE_REF, &req->wb_flags)) nfs_release_request(req); - else - WARN_ON_ONCE(1); } static void From b283f9445214d4d573906f919c70caccd27b74ea Mon Sep 17 00:00:00 2001 From: Jan Kara Date: Tue, 21 Oct 2014 13:32:10 +0200 Subject: [PATCH 303/371] nfs: Remove bogus assignment Commit 3a6fd1f004fc (pnfs/blocklayout: remove read-modify-write handling in bl_write_pagelist) introduced a bogus assignment pg_index = pg_index in variable initialization. AFAICS it's just a typo so remove it. Spotted by Coverity (id 1248711). CC: Christoph Hellwig Signed-off-by: Jan Kara Reviewed-by: Christoph Hellwig Signed-off-by: Trond Myklebust --- fs/nfs/blocklayout/blocklayout.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/nfs/blocklayout/blocklayout.c b/fs/nfs/blocklayout/blocklayout.c index 5228f201d3d5..4f46f7a05289 100644 --- a/fs/nfs/blocklayout/blocklayout.c +++ b/fs/nfs/blocklayout/blocklayout.c @@ -378,7 +378,7 @@ bl_write_pagelist(struct nfs_pgio_header *header, int sync) loff_t offset = header->args.offset; size_t count = header->args.count; struct page **pages = header->args.pages; - int pg_index = pg_index = header->args.pgbase >> PAGE_CACHE_SHIFT; + int pg_index = header->args.pgbase >> PAGE_CACHE_SHIFT; unsigned int pg_len; struct blk_plug plug; int i; From 16caf5b6101d03335b386e77e9e14136f989be87 Mon Sep 17 00:00:00 2001 From: Jan Kara Date: Thu, 23 Oct 2014 14:02:47 +0200 Subject: [PATCH 304/371] nfs: Fix use of uninitialized variable in nfs_getattr() Variable 'err' needn't be initialized when nfs_getattr() uses it to check whether it should call generic_fillattr() or not. That can result in spurious error returns. Initialize 'err' properly. Signed-off-by: Jan Kara Cc: stable@vger.kernel.org Signed-off-by: Trond Myklebust --- fs/nfs/inode.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c index 6388a59f2add..00689a8a85e4 100644 --- a/fs/nfs/inode.c +++ b/fs/nfs/inode.c @@ -626,7 +626,7 @@ int nfs_getattr(struct vfsmount *mnt, struct dentry *dentry, struct kstat *stat) { struct inode *inode = dentry->d_inode; int need_atime = NFS_I(inode)->cache_validity & NFS_INO_INVALID_ATIME; - int err; + int err = 0; trace_nfs_getattr_enter(inode); /* Flush out writes to the server in order to update c/mtime. */ From e983120e923aa1c5d2aaf528331c298c88f3ab85 Mon Sep 17 00:00:00 2001 From: Anna Schumaker Date: Wed, 22 Oct 2014 15:53:10 -0400 Subject: [PATCH 305/371] NFS: SEEK is an NFS v4.2 feature Somehow the nfs_v4_1_minor_ops had the NFS_CAP_SEEK flag set, enabling SEEK over v4.1. This is wrong, and can make servers crash. Signed-off-by: Anna Schumaker Tested-by: J. Bruce Fields Signed-off-by: Trond Myklebust --- fs/nfs/nfs4proc.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 41b8fcbfdadd..dca174ce8309 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -8397,8 +8397,7 @@ static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops = { | NFS_CAP_CHANGE_ATTR | NFS_CAP_POSIX_LOCK | NFS_CAP_STATEID_NFSV41 - | NFS_CAP_ATOMIC_OPEN_V1 - | NFS_CAP_SEEK, + | NFS_CAP_ATOMIC_OPEN_V1, .init_client = nfs41_init_client, .shutdown_client = nfs41_shutdown_client, .match_stateid = nfs41_match_stateid, @@ -8420,7 +8419,8 @@ static const struct nfs4_minor_version_ops nfs_v4_2_minor_ops = { | NFS_CAP_CHANGE_ATTR | NFS_CAP_POSIX_LOCK | NFS_CAP_STATEID_NFSV41 - | NFS_CAP_ATOMIC_OPEN_V1, + | NFS_CAP_ATOMIC_OPEN_V1 + | NFS_CAP_SEEK, .init_client = nfs41_init_client, .shutdown_client = nfs41_shutdown_client, .match_stateid = nfs41_match_stateid, From ee7bc3cdc2702ba36930d477b76dacd5b18e8956 Mon Sep 17 00:00:00 2001 From: Anish Bhatt Date: Tue, 11 Nov 2014 23:30:51 -0800 Subject: [PATCH 306/371] cxgb4 : dcb open-lldp interop fixes * In LLD_MANAGED mode, traffic classes were being returned in reverse order to lldp agent. * Priotype of strict is no longer the default returned. * Change behaviour of getdcbx() based on discussions on lldp-devel These were missed as there was no working fetch interface for open-lldp when running in LLD_MANAGED mode till now. Fixes: 76bcb31efc06 ("cxgb4 : Add DCBx support codebase and dcbnl_ops") Signed-off-by: Anish Bhatt Signed-off-by: David S. Miller --- .../net/ethernet/chelsio/cxgb4/cxgb4_dcb.c | 28 +++++++++++++------ 1 file changed, 19 insertions(+), 9 deletions(-) diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_dcb.c b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_dcb.c index b6fdb142eacb..cca604994003 100644 --- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_dcb.c +++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_dcb.c @@ -123,7 +123,11 @@ void cxgb4_dcb_state_fsm(struct net_device *dev, case CXGB4_DCB_INPUT_FW_ENABLED: { /* we're going to use Firmware DCB */ dcb->state = CXGB4_DCB_STATE_FW_INCOMPLETE; - dcb->supported = CXGB4_DCBX_FW_SUPPORT; + dcb->supported = DCB_CAP_DCBX_LLD_MANAGED; + if (dcb->dcb_version == FW_PORT_DCB_VER_IEEE) + dcb->supported |= DCB_CAP_DCBX_VER_IEEE; + else + dcb->supported |= DCB_CAP_DCBX_VER_CEE; break; } @@ -437,14 +441,17 @@ static void cxgb4_getpgtccfg(struct net_device *dev, int tc, *up_tc_map = (1 << tc); /* prio_type is link strict */ - *prio_type = 0x2; + if (*pgid != 0xF) + *prio_type = 0x2; } static void cxgb4_getpgtccfg_tx(struct net_device *dev, int tc, u8 *prio_type, u8 *pgid, u8 *bw_per, u8 *up_tc_map) { - return cxgb4_getpgtccfg(dev, tc, prio_type, pgid, bw_per, up_tc_map, 1); + /* tc 0 is written at MSB position */ + return cxgb4_getpgtccfg(dev, (7 - tc), prio_type, pgid, bw_per, + up_tc_map, 1); } @@ -452,7 +459,9 @@ static void cxgb4_getpgtccfg_rx(struct net_device *dev, int tc, u8 *prio_type, u8 *pgid, u8 *bw_per, u8 *up_tc_map) { - return cxgb4_getpgtccfg(dev, tc, prio_type, pgid, bw_per, up_tc_map, 0); + /* tc 0 is written at MSB position */ + return cxgb4_getpgtccfg(dev, (7 - tc), prio_type, pgid, bw_per, + up_tc_map, 0); } static void cxgb4_setpgtccfg_tx(struct net_device *dev, int tc, @@ -462,6 +471,7 @@ static void cxgb4_setpgtccfg_tx(struct net_device *dev, int tc, struct fw_port_cmd pcmd; struct port_info *pi = netdev2pinfo(dev); struct adapter *adap = pi->adapter; + int fw_tc = 7 - tc; u32 _pgid; int err; @@ -480,8 +490,8 @@ static void cxgb4_setpgtccfg_tx(struct net_device *dev, int tc, } _pgid = be32_to_cpu(pcmd.u.dcb.pgid.pgid); - _pgid &= ~(0xF << (tc * 4)); - _pgid |= pgid << (tc * 4); + _pgid &= ~(0xF << (fw_tc * 4)); + _pgid |= pgid << (fw_tc * 4); pcmd.u.dcb.pgid.pgid = cpu_to_be32(_pgid); INIT_PORT_DCB_WRITE_CMD(pcmd, pi->port_id); @@ -594,7 +604,7 @@ static void cxgb4_getpfccfg(struct net_device *dev, int priority, u8 *pfccfg) priority >= CXGB4_MAX_PRIORITY) *pfccfg = 0; else - *pfccfg = (pi->dcb.pfcen >> priority) & 1; + *pfccfg = (pi->dcb.pfcen >> (7 - priority)) & 1; } /* Enable/disable Priority Pause Frames for the specified Traffic Class @@ -619,9 +629,9 @@ static void cxgb4_setpfccfg(struct net_device *dev, int priority, u8 pfccfg) pcmd.u.dcb.pfc.pfcen = pi->dcb.pfcen; if (pfccfg) - pcmd.u.dcb.pfc.pfcen |= (1 << priority); + pcmd.u.dcb.pfc.pfcen |= (1 << (7 - priority)); else - pcmd.u.dcb.pfc.pfcen &= (~(1 << priority)); + pcmd.u.dcb.pfc.pfcen &= (~(1 << (7 - priority))); err = t4_wr_mbox(adap, adap->mbox, &pcmd, sizeof(pcmd), &pcmd); if (err != FW_PORT_DCB_CFG_SUCCESS) { From cca04b2854ecfb7cd1b8ee84ab38bc99af59f526 Mon Sep 17 00:00:00 2001 From: Richard Cochran Date: Wed, 12 Nov 2014 11:33:52 +0100 Subject: [PATCH 307/371] net: ptp: fix time stamp matching logic for VLAN packets. Commit ae5c6c6d "ptp: Classify ptp over ip over vlan packets" changed the code in two drivers that matches time stamps with PTP frames, with the goal of allowing VLAN tagged PTP packets to receive hardware time stamps. However, that commit failed to account for the VLAN header when parsing IPv4 packets. This patch fixes those two drivers to correctly match VLAN tagged IPv4/UDP PTP messages with their time stamps. This patch should also be applied to v3.17. Signed-off-by: Richard Cochran Signed-off-by: David S. Miller --- drivers/net/ethernet/ti/cpts.c | 2 +- drivers/net/phy/dp83640.c | 4 ++-- 2 files changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/net/ethernet/ti/cpts.c b/drivers/net/ethernet/ti/cpts.c index ab92f67da035..4a4388b813ac 100644 --- a/drivers/net/ethernet/ti/cpts.c +++ b/drivers/net/ethernet/ti/cpts.c @@ -264,7 +264,7 @@ static int cpts_match(struct sk_buff *skb, unsigned int ptp_class, switch (ptp_class & PTP_CLASS_PMASK) { case PTP_CLASS_IPV4: - offset += ETH_HLEN + IPV4_HLEN(data) + UDP_HLEN; + offset += ETH_HLEN + IPV4_HLEN(data + offset) + UDP_HLEN; break; case PTP_CLASS_IPV6: offset += ETH_HLEN + IP6_HLEN + UDP_HLEN; diff --git a/drivers/net/phy/dp83640.c b/drivers/net/phy/dp83640.c index 2954052706e8..e22e602beef3 100644 --- a/drivers/net/phy/dp83640.c +++ b/drivers/net/phy/dp83640.c @@ -791,7 +791,7 @@ static int match(struct sk_buff *skb, unsigned int type, struct rxts *rxts) switch (type & PTP_CLASS_PMASK) { case PTP_CLASS_IPV4: - offset += ETH_HLEN + IPV4_HLEN(data) + UDP_HLEN; + offset += ETH_HLEN + IPV4_HLEN(data + offset) + UDP_HLEN; break; case PTP_CLASS_IPV6: offset += ETH_HLEN + IP6_HLEN + UDP_HLEN; @@ -934,7 +934,7 @@ static int is_sync(struct sk_buff *skb, int type) switch (type & PTP_CLASS_PMASK) { case PTP_CLASS_IPV4: - offset += ETH_HLEN + IPV4_HLEN(data) + UDP_HLEN; + offset += ETH_HLEN + IPV4_HLEN(data + offset) + UDP_HLEN; break; case PTP_CLASS_IPV6: offset += ETH_HLEN + IP6_HLEN + UDP_HLEN; From 6251edd932ce3faadbfe27b0a0fe79780e0972e9 Mon Sep 17 00:00:00 2001 From: Hiroaki SHIMODA Date: Thu, 13 Nov 2014 04:24:10 +0900 Subject: [PATCH 308/371] netlink: Properly unbind in error conditions. Even if netlink_kernel_cfg::unbind is implemented the unbind() method is not called, because cfg->unbind is omitted in __netlink_kernel_create(). And fix wrong argument of test_bit() and off by one problem. At this point, no unbind() method is implemented, so there is no real issue. Fixes: 4f520900522f ("netlink: have netlink per-protocol bind function return an error code.") Signed-off-by: Hiroaki SHIMODA Cc: Richard Guy Briggs Acked-by: Richard Guy Briggs Signed-off-by: David S. Miller --- net/netlink/af_netlink.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/net/netlink/af_netlink.c b/net/netlink/af_netlink.c index f1de72de273e..0007b8180397 100644 --- a/net/netlink/af_netlink.c +++ b/net/netlink/af_netlink.c @@ -1440,7 +1440,7 @@ static void netlink_unbind(int group, long unsigned int groups, return; for (undo = 0; undo < group; undo++) - if (test_bit(group, &groups)) + if (test_bit(undo, &groups)) nlk->netlink_unbind(undo); } @@ -1492,7 +1492,7 @@ static int netlink_bind(struct socket *sock, struct sockaddr *addr, netlink_insert(sk, net, nladdr->nl_pid) : netlink_autobind(sock); if (err) { - netlink_unbind(nlk->ngroups - 1, groups, nlk); + netlink_unbind(nlk->ngroups, groups, nlk); return err; } } @@ -2509,6 +2509,7 @@ __netlink_kernel_create(struct net *net, int unit, struct module *module, nl_table[unit].module = module; if (cfg) { nl_table[unit].bind = cfg->bind; + nl_table[unit].unbind = cfg->unbind; nl_table[unit].flags = cfg->flags; if (cfg->compare) nl_table[unit].compare = cfg->compare; From d950f84c1c6658faec2ecbf5b09f7e7191953394 Mon Sep 17 00:00:00 2001 From: Richard Guy Briggs Date: Wed, 12 Nov 2014 14:01:34 -0500 Subject: [PATCH 309/371] selinux: convert WARN_ONCE() to printk() in selinux_nlmsg_perm() Convert WARN_ONCE() to printk() in selinux_nlmsg_perm(). After conversion from audit_log() in commit e173fb26, WARN_ONCE() was deemed too alarmist, so switch it to printk(). Signed-off-by: Richard Guy Briggs [PM: Changed to printk(WARNING) so we catch all of the different invalid netlink messages. In Richard's defense, he brought this point up earlier, but I didn't understand his point at the time.] Signed-off-by: Paul Moore --- security/selinux/hooks.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c index 2478976fc894..654f0710620a 100644 --- a/security/selinux/hooks.c +++ b/security/selinux/hooks.c @@ -4727,9 +4727,10 @@ static int selinux_nlmsg_perm(struct sock *sk, struct sk_buff *skb) err = selinux_nlmsg_lookup(sksec->sclass, nlh->nlmsg_type, &perm); if (err) { if (err == -EINVAL) { - WARN_ONCE(1, "selinux_nlmsg_perm: unrecognized netlink message:" - " protocol=%hu nlmsg_type=%hu sclass=%hu\n", - sk->sk_protocol, nlh->nlmsg_type, sksec->sclass); + printk(KERN_WARNING + "SELinux: unrecognized netlink message:" + " protocol=%hu nlmsg_type=%hu sclass=%hu\n", + sk->sk_protocol, nlh->nlmsg_type, sksec->sclass); if (!selinux_enforcing || security_get_allow_unknown()) err = 0; } From 4dfd4f7af0afd201706ad186352ca423b0f17d4b Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Fri, 17 Oct 2014 15:10:25 +0300 Subject: [PATCH 310/371] NFSv4: Ensure that we remove NFSv4.0 delegations when state has expired NFSv4.0 does not have TEST_STATEID/FREE_STATEID functionality, so unlike NFSv4.1, the recovery procedure when stateids have expired or have been revoked requires us to just forget the delegation. http://lkml.kernel.org/r/CAN-5tyHwG=Cn2Q9KsHWadewjpTTy_K26ee+UnSvHvG4192p-Xw@mail.gmail.com Cc: stable@vger.kernel.org Signed-off-by: Trond Myklebust --- fs/nfs/nfs4proc.c | 24 +++++++++++++++++++++++- 1 file changed, 23 insertions(+), 1 deletion(-) diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index dca174ce8309..bdd880bddba4 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -2109,6 +2109,28 @@ static int nfs4_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *sta return ret; } +static void nfs_finish_clear_delegation_stateid(struct nfs4_state *state) +{ + nfs_remove_bad_delegation(state->inode); + write_seqlock(&state->seqlock); + nfs4_stateid_copy(&state->stateid, &state->open_stateid); + write_sequnlock(&state->seqlock); + clear_bit(NFS_DELEGATED_STATE, &state->flags); +} + +static void nfs40_clear_delegation_stateid(struct nfs4_state *state) +{ + if (rcu_access_pointer(NFS_I(state->inode)->delegation) != NULL) + nfs_finish_clear_delegation_stateid(state); +} + +static int nfs40_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) +{ + /* NFSv4.0 doesn't allow for delegation recovery on open expire */ + nfs40_clear_delegation_stateid(state); + return nfs4_open_expired(sp, state); +} + #if defined(CONFIG_NFS_V4_1) static void nfs41_clear_delegation_stateid(struct nfs4_state *state) { @@ -8330,7 +8352,7 @@ static const struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops = { static const struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops = { .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, - .recover_open = nfs4_open_expired, + .recover_open = nfs40_open_expired, .recover_lock = nfs4_lock_expired, .establish_clid = nfs4_init_clientid, }; From 0c116cadd94b16b30b1dd90d38b2784d9b39b01a Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Wed, 12 Nov 2014 14:44:49 -0500 Subject: [PATCH 311/371] NFSv4.1: nfs41_clear_delegation_stateid shouldn't trust NFS_DELEGATED_STATE This patch removes the assumption made previously, that we only need to check the delegation stateid when it matches the stateid on a cached open. If we believe that we hold a delegation for this file, then we must assume that its stateid may have been revoked or expired too. If we don't test it then our state recovery process may end up caching open/lock state in a situation where it should not. We therefore rename the function nfs41_clear_delegation_stateid as nfs41_check_delegation_stateid, and change it to always run through the delegation stateid test and recovery process as outlined in RFC5661. http://lkml.kernel.org/r/CAN-5tyHwG=Cn2Q9KsHWadewjpTTy_K26ee+UnSvHvG4192p-Xw@mail.gmail.com Cc: stable@vger.kernel.org Signed-off-by: Trond Myklebust --- fs/nfs/nfs4proc.c | 42 +++++++++++++++++------------------------- 1 file changed, 17 insertions(+), 25 deletions(-) diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index bdd880bddba4..3b98fe752ef8 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -2132,45 +2132,37 @@ static int nfs40_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *st } #if defined(CONFIG_NFS_V4_1) -static void nfs41_clear_delegation_stateid(struct nfs4_state *state) +static void nfs41_check_delegation_stateid(struct nfs4_state *state) { struct nfs_server *server = NFS_SERVER(state->inode); - nfs4_stateid *stateid = &state->stateid; + nfs4_stateid stateid; struct nfs_delegation *delegation; - struct rpc_cred *cred = NULL; - int status = -NFS4ERR_BAD_STATEID; - - /* If a state reset has been done, test_stateid is unneeded */ - if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) - return; + struct rpc_cred *cred; + int status; /* Get the delegation credential for use by test/free_stateid */ rcu_read_lock(); delegation = rcu_dereference(NFS_I(state->inode)->delegation); - if (delegation != NULL && - nfs4_stateid_match(&delegation->stateid, stateid)) { - cred = get_rpccred(delegation->cred); - rcu_read_unlock(); - status = nfs41_test_stateid(server, stateid, cred); - trace_nfs4_test_delegation_stateid(state, NULL, status); - } else + if (delegation == NULL) { rcu_read_unlock(); + return; + } + + nfs4_stateid_copy(&stateid, &delegation->stateid); + cred = get_rpccred(delegation->cred); + rcu_read_unlock(); + status = nfs41_test_stateid(server, &stateid, cred); + trace_nfs4_test_delegation_stateid(state, NULL, status); if (status != NFS_OK) { /* Free the stateid unless the server explicitly * informs us the stateid is unrecognized. */ if (status != -NFS4ERR_BAD_STATEID) - nfs41_free_stateid(server, stateid, cred); - nfs_remove_bad_delegation(state->inode); - - write_seqlock(&state->seqlock); - nfs4_stateid_copy(&state->stateid, &state->open_stateid); - write_sequnlock(&state->seqlock); - clear_bit(NFS_DELEGATED_STATE, &state->flags); + nfs41_free_stateid(server, &stateid, cred); + nfs_finish_clear_delegation_stateid(state); } - if (cred != NULL) - put_rpccred(cred); + put_rpccred(cred); } /** @@ -2214,7 +2206,7 @@ static int nfs41_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *st { int status; - nfs41_clear_delegation_stateid(state); + nfs41_check_delegation_stateid(state); status = nfs41_check_open_stateid(state); if (status != NFS_OK) status = nfs4_open_expired(sp, state); From 869f9dfa4d6d57b79e0afc3af14772c2a023eeb1 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Mon, 10 Nov 2014 18:43:56 -0500 Subject: [PATCH 312/371] NFSv4: Fix races between nfs_remove_bad_delegation() and delegation return Any attempt to call nfs_remove_bad_delegation() while a delegation is being returned is currently a no-op. This means that we can end up looping forever in nfs_end_delegation_return() if something causes the delegation to be revoked. This patch adds a mechanism whereby the state recovery code can communicate to the delegation return code that the delegation is no longer valid and that it should not be used when reclaiming state. It also changes the return value for nfs4_handle_delegation_recall_error() to ensure that nfs_end_delegation_return() does not reattempt the lock reclaim before state recovery is done. http://lkml.kernel.org/r/CAN-5tyHwG=Cn2Q9KsHWadewjpTTy_K26ee+UnSvHvG4192p-Xw@mail.gmail.com Cc: stable@vger.kernel.org Signed-off-by: Trond Myklebust --- fs/nfs/delegation.c | 23 +++++++++++++++++++++-- fs/nfs/delegation.h | 1 + fs/nfs/nfs4proc.c | 2 +- 3 files changed, 23 insertions(+), 3 deletions(-) diff --git a/fs/nfs/delegation.c b/fs/nfs/delegation.c index 5853f53db732..e5f473d13e24 100644 --- a/fs/nfs/delegation.c +++ b/fs/nfs/delegation.c @@ -193,7 +193,11 @@ static int nfs_do_return_delegation(struct inode *inode, struct nfs_delegation * { int res = 0; - res = nfs4_proc_delegreturn(inode, delegation->cred, &delegation->stateid, issync); + if (!test_bit(NFS_DELEGATION_REVOKED, &delegation->flags)) + res = nfs4_proc_delegreturn(inode, + delegation->cred, + &delegation->stateid, + issync); nfs_free_delegation(delegation); return res; } @@ -380,11 +384,13 @@ static int nfs_end_delegation_return(struct inode *inode, struct nfs_delegation { struct nfs_client *clp = NFS_SERVER(inode)->nfs_client; struct nfs_inode *nfsi = NFS_I(inode); - int err; + int err = 0; if (delegation == NULL) return 0; do { + if (test_bit(NFS_DELEGATION_REVOKED, &delegation->flags)) + break; err = nfs_delegation_claim_opens(inode, &delegation->stateid); if (!issync || err != -EAGAIN) break; @@ -605,10 +611,23 @@ static void nfs_client_mark_return_unused_delegation_types(struct nfs_client *cl rcu_read_unlock(); } +static void nfs_revoke_delegation(struct inode *inode) +{ + struct nfs_delegation *delegation; + rcu_read_lock(); + delegation = rcu_dereference(NFS_I(inode)->delegation); + if (delegation != NULL) { + set_bit(NFS_DELEGATION_REVOKED, &delegation->flags); + nfs_mark_return_delegation(NFS_SERVER(inode), delegation); + } + rcu_read_unlock(); +} + void nfs_remove_bad_delegation(struct inode *inode) { struct nfs_delegation *delegation; + nfs_revoke_delegation(inode); delegation = nfs_inode_detach_delegation(inode); if (delegation) { nfs_inode_find_state_and_recover(inode, &delegation->stateid); diff --git a/fs/nfs/delegation.h b/fs/nfs/delegation.h index 5c1cce39297f..e3c20a3ccc93 100644 --- a/fs/nfs/delegation.h +++ b/fs/nfs/delegation.h @@ -31,6 +31,7 @@ enum { NFS_DELEGATION_RETURN_IF_CLOSED, NFS_DELEGATION_REFERENCED, NFS_DELEGATION_RETURNING, + NFS_DELEGATION_REVOKED, }; int nfs_inode_set_delegation(struct inode *inode, struct rpc_cred *cred, struct nfs_openres *res); diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 3b98fe752ef8..4b7166f4e1cf 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -1654,7 +1654,7 @@ static int nfs4_handle_delegation_recall_error(struct nfs_server *server, struct nfs_inode_find_state_and_recover(state->inode, stateid); nfs4_schedule_stateid_recovery(server, state); - return 0; + return -EAGAIN; case -NFS4ERR_DELAY: case -NFS4ERR_GRACE: set_bit(NFS_DELEGATED_STATE, &state->flags); From c606bb8857921d3ecf4d353942d6cc7e116cc75a Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Fri, 17 Oct 2014 15:15:13 +0300 Subject: [PATCH 313/371] NFSv4: Ensure that we call FREE_STATEID when NFSv4.x stateids are revoked NFSv4.x (x>0) requires us to call TEST_STATEID+FREE_STATEID if a stateid is revoked. We will currently fail to do this if the stateid is a delegation. http://lkml.kernel.org/r/CAN-5tyHwG=Cn2Q9KsHWadewjpTTy_K26ee+UnSvHvG4192p-Xw@mail.gmail.com Cc: stable@vger.kernel.org Signed-off-by: Trond Myklebust --- fs/nfs/filelayout/filelayout.c | 3 --- fs/nfs/nfs4proc.c | 8 -------- 2 files changed, 11 deletions(-) diff --git a/fs/nfs/filelayout/filelayout.c b/fs/nfs/filelayout/filelayout.c index 46fab1cb455a..7afb52f6a25a 100644 --- a/fs/nfs/filelayout/filelayout.c +++ b/fs/nfs/filelayout/filelayout.c @@ -145,9 +145,6 @@ static int filelayout_async_handle_error(struct rpc_task *task, case -NFS4ERR_DELEG_REVOKED: case -NFS4ERR_ADMIN_REVOKED: case -NFS4ERR_BAD_STATEID: - if (state == NULL) - break; - nfs_remove_bad_delegation(state->inode); case -NFS4ERR_OPENMODE: if (state == NULL) break; diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 4b7166f4e1cf..69dc20a743f9 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -370,11 +370,6 @@ static int nfs4_handle_exception(struct nfs_server *server, int errorcode, struc case -NFS4ERR_DELEG_REVOKED: case -NFS4ERR_ADMIN_REVOKED: case -NFS4ERR_BAD_STATEID: - if (inode != NULL && nfs4_have_delegation(inode, FMODE_READ)) { - nfs_remove_bad_delegation(inode); - exception->retry = 1; - break; - } if (state == NULL) break; ret = nfs4_schedule_stateid_recovery(server, state); @@ -4844,9 +4839,6 @@ nfs4_async_handle_error(struct rpc_task *task, const struct nfs_server *server, case -NFS4ERR_DELEG_REVOKED: case -NFS4ERR_ADMIN_REVOKED: case -NFS4ERR_BAD_STATEID: - if (state == NULL) - break; - nfs_remove_bad_delegation(state->inode); case -NFS4ERR_OPENMODE: if (state == NULL) break; From f8ebf7a8ca35dde321f0cd385fee6f1950609367 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Fri, 17 Oct 2014 23:02:52 +0300 Subject: [PATCH 314/371] NFS: Don't try to reclaim delegation open state if recovery failed If state recovery failed, then we should not attempt to reclaim delegated state. http://lkml.kernel.org/r/CAN-5tyHwG=Cn2Q9KsHWadewjpTTy_K26ee+UnSvHvG4192p-Xw@mail.gmail.com Cc: stable@vger.kernel.org Signed-off-by: Trond Myklebust --- fs/nfs/delegation.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/fs/nfs/delegation.c b/fs/nfs/delegation.c index e5f473d13e24..7f3f60641344 100644 --- a/fs/nfs/delegation.c +++ b/fs/nfs/delegation.c @@ -125,6 +125,8 @@ again: continue; if (!test_bit(NFS_DELEGATED_STATE, &state->flags)) continue; + if (!nfs4_valid_open_stateid(state)) + continue; if (!nfs4_stateid_match(&state->stateid, stateid)) continue; get_nfs_open_context(ctx); From b2c19870063f81209fbdb471a56ab6c4a9d9e172 Mon Sep 17 00:00:00 2001 From: Alexandre Courbot Date: Wed, 12 Nov 2014 14:19:58 +0900 Subject: [PATCH 315/371] drm/gk20a/fb: fix setting of large page size bit Commit "ltc/gf100-: fix cbc issues on certain boards" moved the setting of the large page size bit from bar/nvc0 to fb/nvc0. GK20A uses its own FB device and the change was thus not applied to it - fix this. Signed-off-by: Alexandre Courbot Signed-off-by: Ben Skeggs --- drivers/gpu/drm/nouveau/core/subdev/fb/gk20a.c | 16 +++++++++++++++- 1 file changed, 15 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/nouveau/core/subdev/fb/gk20a.c b/drivers/gpu/drm/nouveau/core/subdev/fb/gk20a.c index a16024a74771..fde42e4d1b56 100644 --- a/drivers/gpu/drm/nouveau/core/subdev/fb/gk20a.c +++ b/drivers/gpu/drm/nouveau/core/subdev/fb/gk20a.c @@ -26,6 +26,20 @@ struct gk20a_fb_priv { struct nouveau_fb base; }; +static int +gk20a_fb_init(struct nouveau_object *object) +{ + struct gk20a_fb_priv *priv = (void *)object; + int ret; + + ret = nouveau_fb_init(&priv->base); + if (ret) + return ret; + + nv_mask(priv, 0x100c80, 0x00000001, 0x00000000); /* 128KiB lpg */ + return 0; +} + static int gk20a_fb_ctor(struct nouveau_object *parent, struct nouveau_object *engine, struct nouveau_oclass *oclass, void *data, u32 size, @@ -48,7 +62,7 @@ gk20a_fb_oclass = &(struct nouveau_fb_impl) { .base.ofuncs = &(struct nouveau_ofuncs) { .ctor = gk20a_fb_ctor, .dtor = _nouveau_fb_dtor, - .init = _nouveau_fb_init, + .init = gk20a_fb_init, .fini = _nouveau_fb_fini, }, .memtype = nvc0_fb_memtype_valid, From eae7382bc5547391e72f8cde83f5e2be9c359d5b Mon Sep 17 00:00:00 2001 From: Roy Spliet Date: Thu, 30 Oct 2014 22:57:45 +0100 Subject: [PATCH 316/371] drm/nouveau/nv50/disp: Fix modeset on G94 Commit 1dce6264045cd23e9c07574ed0bb31c7dce9354f introduced a regression spotted on several G94 (FDObz #85160). This device seems to expect the vblank period to be set after setting scale instead of before. V2: shove this in a separate function This is a candidate bug-fix for 3.18 Signed-off-by: Roy Spliet Tested-by: Zlatko Calusic Tested-by: Michael Riesch Tested-by: "poma" Tested-by: Adam Williamson Signed-off-by: Ben Skeggs --- drivers/gpu/drm/nouveau/nv50_display.c | 25 +++++++++++++++++++++++-- 1 file changed, 23 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/nouveau/nv50_display.c b/drivers/gpu/drm/nouveau/nv50_display.c index ae873d1a8d46..eb8b36714fa1 100644 --- a/drivers/gpu/drm/nouveau/nv50_display.c +++ b/drivers/gpu/drm/nouveau/nv50_display.c @@ -790,6 +790,22 @@ nv50_crtc_set_scale(struct nouveau_crtc *nv_crtc, bool update) return 0; } +static int +nv50_crtc_set_raster_vblank_dmi(struct nouveau_crtc *nv_crtc, u32 usec) +{ + struct nv50_mast *mast = nv50_mast(nv_crtc->base.dev); + u32 *push; + + push = evo_wait(mast, 8); + if (!push) + return -ENOMEM; + + evo_mthd(push, 0x0828 + (nv_crtc->index * 0x400), 1); + evo_data(push, usec); + evo_kick(push, mast); + return 0; +} + static int nv50_crtc_set_color_vibrance(struct nouveau_crtc *nv_crtc, bool update) { @@ -1104,14 +1120,14 @@ nv50_crtc_mode_set(struct drm_crtc *crtc, struct drm_display_mode *umode, evo_mthd(push, 0x0804 + (nv_crtc->index * 0x400), 2); evo_data(push, 0x00800000 | mode->clock); evo_data(push, (ilace == 2) ? 2 : 0); - evo_mthd(push, 0x0810 + (nv_crtc->index * 0x400), 8); + evo_mthd(push, 0x0810 + (nv_crtc->index * 0x400), 6); evo_data(push, 0x00000000); evo_data(push, (vactive << 16) | hactive); evo_data(push, ( vsynce << 16) | hsynce); evo_data(push, (vblanke << 16) | hblanke); evo_data(push, (vblanks << 16) | hblanks); evo_data(push, (vblan2e << 16) | vblan2s); - evo_data(push, vblankus); + evo_mthd(push, 0x082c + (nv_crtc->index * 0x400), 1); evo_data(push, 0x00000000); evo_mthd(push, 0x0900 + (nv_crtc->index * 0x400), 2); evo_data(push, 0x00000311); @@ -1141,6 +1157,11 @@ nv50_crtc_mode_set(struct drm_crtc *crtc, struct drm_display_mode *umode, nv_connector = nouveau_crtc_connector_get(nv_crtc); nv50_crtc_set_dither(nv_crtc, false); nv50_crtc_set_scale(nv_crtc, false); + + /* G94 only accepts this after setting scale */ + if (nv50_vers(mast) < GF110_DISP_CORE_CHANNEL_DMA) + nv50_crtc_set_raster_vblank_dmi(nv_crtc, vblankus); + nv50_crtc_set_color_vibrance(nv_crtc, false); nv50_crtc_set_image(nv_crtc, crtc->primary->fb, x, y, false); return 0; From 65eca3a20264a8999570c269406196bd1ae23be7 Mon Sep 17 00:00:00 2001 From: Cornelia Huck Date: Mon, 20 Oct 2014 15:58:49 +0200 Subject: [PATCH 317/371] virtio_console: move early VQ enablement Commit f5866db6 (virtio_console: enable VQs early) tried to make sure that DRIVER_OK was set when virtio_console started using its virtqueues. Doing this in add_port(), however, means that we try to set DRIVER_OK again when when a port is dynamically added after the probe function is done. Let's move virtio_device_ready() to the probe function just before trying to use the virtqueues instead. This is fine as nothing can fail inbetween. Reported-by: Thomas Graf Reviewed-by: Michael S. Tsirkin Signed-off-by: Cornelia Huck Signed-off-by: Michael S. Tsirkin --- drivers/char/virtio_console.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/char/virtio_console.c b/drivers/char/virtio_console.c index bfa640023e64..cf7a561fad7c 100644 --- a/drivers/char/virtio_console.c +++ b/drivers/char/virtio_console.c @@ -1449,8 +1449,6 @@ static int add_port(struct ports_device *portdev, u32 id) spin_lock_init(&port->outvq_lock); init_waitqueue_head(&port->waitqueue); - virtio_device_ready(portdev->vdev); - /* Fill the in_vq with buffers so the host can send us data. */ nr_added_bufs = fill_queue(port->in_vq, &port->inbuf_lock); if (!nr_added_bufs) { @@ -2026,6 +2024,8 @@ static int virtcons_probe(struct virtio_device *vdev) spin_lock_init(&portdev->ports_lock); INIT_LIST_HEAD(&portdev->ports); + virtio_device_ready(portdev->vdev); + if (multiport) { unsigned int nr_added_bufs; From 3542aed7480925eb859f7ce101982209cc19a126 Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Wed, 12 Nov 2014 08:11:56 +0100 Subject: [PATCH 318/371] ALSA: hda - Add mute LED control for Lenovo Ideapad Z560 Lenovo Ideapad Z560 has a mute LED that is controlled via EAPD pin 0x1b on CX20585 codec. (EAPD bit on corresponds to mute LED on.) The machine doesn't need other EAPD, so the fixup concentrates on controlling EAPD 0x1b following the vmaster state (but inversely). Bugzilla: https://bugzilla.novell.com/show_bug.cgi?id=665315 Reported-by: Szymon Kowalczyk Cc: Signed-off-by: Takashi Iwai --- sound/pci/hda/patch_conexant.c | 31 +++++++++++++++++++++++++++++++ 1 file changed, 31 insertions(+) diff --git a/sound/pci/hda/patch_conexant.c b/sound/pci/hda/patch_conexant.c index 71e4bad06345..e9ebc7bd752c 100644 --- a/sound/pci/hda/patch_conexant.c +++ b/sound/pci/hda/patch_conexant.c @@ -43,6 +43,7 @@ struct conexant_spec { unsigned int num_eapds; hda_nid_t eapds[4]; bool dynamic_eapd; + hda_nid_t mute_led_eapd; unsigned int parse_flags; /* flag for snd_hda_parse_pin_defcfg() */ @@ -163,6 +164,17 @@ static void cx_auto_vmaster_hook(void *private_data, int enabled) cx_auto_turn_eapd(codec, spec->num_eapds, spec->eapds, enabled); } +/* turn on/off EAPD according to Master switch (inversely!) for mute LED */ +static void cx_auto_vmaster_hook_mute_led(void *private_data, int enabled) +{ + struct hda_codec *codec = private_data; + struct conexant_spec *spec = codec->spec; + + snd_hda_codec_write(codec, spec->mute_led_eapd, 0, + AC_VERB_SET_EAPD_BTLENABLE, + enabled ? 0x00 : 0x02); +} + static int cx_auto_build_controls(struct hda_codec *codec) { int err; @@ -223,6 +235,7 @@ enum { CXT_FIXUP_TOSHIBA_P105, CXT_FIXUP_HP_530, CXT_FIXUP_CAP_MIX_AMP_5047, + CXT_FIXUP_MUTE_LED_EAPD, }; /* for hda_fixup_thinkpad_acpi() */ @@ -557,6 +570,18 @@ static void cxt_fixup_olpc_xo(struct hda_codec *codec, } } +static void cxt_fixup_mute_led_eapd(struct hda_codec *codec, + const struct hda_fixup *fix, int action) +{ + struct conexant_spec *spec = codec->spec; + + if (action == HDA_FIXUP_ACT_PRE_PROBE) { + spec->mute_led_eapd = 0x1b; + spec->dynamic_eapd = 1; + spec->gen.vmaster_mute.hook = cx_auto_vmaster_hook_mute_led; + } +} + /* * Fix max input level on mixer widget to 0dB * (originally it has 0x2b steps with 0dB offset 0x14) @@ -705,6 +730,10 @@ static const struct hda_fixup cxt_fixups[] = { .type = HDA_FIXUP_FUNC, .v.func = cxt_fixup_cap_mix_amp_5047, }, + [CXT_FIXUP_MUTE_LED_EAPD] = { + .type = HDA_FIXUP_FUNC, + .v.func = cxt_fixup_mute_led_eapd, + }, }; static const struct snd_pci_quirk cxt5045_fixups[] = { @@ -762,6 +791,7 @@ static const struct snd_pci_quirk cxt5066_fixups[] = { SND_PCI_QUIRK(0x17aa, 0x21cf, "Lenovo T520", CXT_PINCFG_LENOVO_TP410), SND_PCI_QUIRK(0x17aa, 0x21da, "Lenovo X220", CXT_PINCFG_LENOVO_TP410), SND_PCI_QUIRK(0x17aa, 0x21db, "Lenovo X220-tablet", CXT_PINCFG_LENOVO_TP410), + SND_PCI_QUIRK(0x17aa, 0x38af, "Lenovo IdeaPad Z560", CXT_FIXUP_MUTE_LED_EAPD), SND_PCI_QUIRK(0x17aa, 0x3975, "Lenovo U300s", CXT_FIXUP_STEREO_DMIC), SND_PCI_QUIRK(0x17aa, 0x3977, "Lenovo IdeaPad U310", CXT_FIXUP_STEREO_DMIC), SND_PCI_QUIRK(0x17aa, 0x397b, "Lenovo S205", CXT_FIXUP_STEREO_DMIC), @@ -780,6 +810,7 @@ static const struct hda_model_fixup cxt5066_fixup_models[] = { { .id = CXT_PINCFG_LEMOTE_A1004, .name = "lemote-a1004" }, { .id = CXT_PINCFG_LEMOTE_A1205, .name = "lemote-a1205" }, { .id = CXT_FIXUP_OLPC_XO, .name = "olpc-xo" }, + { .id = CXT_FIXUP_MUTE_LED_EAPD, .name = "mute-led-eapd" }, {} }; From 8ff64c17f3bec8cdafc68461532e273babe2a605 Mon Sep 17 00:00:00 2001 From: Thierry Reding Date: Wed, 8 Oct 2014 14:48:51 +0200 Subject: [PATCH 319/371] drm/tegra: dc: Add missing call to drm_vblank_on() When the CRTC is enabled, make sure the VBLANK machinery is enabled. Failure to do so will cause drm_vblank_get() to not enable the VBLANK on the CRTC and VBLANK-synchronized page-flips won't work. While at it, get rid of the legacy drm_vblank_pre_modeset() and drm_vblank_post_modeset() calls that are replaced by drm_vblank_on() and drm_vblank_off(). Reported-by: Alexandre Courbot Tested-by: Alexandre Courbot Signed-off-by: Thierry Reding --- drivers/gpu/drm/tegra/dc.c | 9 ++++----- 1 file changed, 4 insertions(+), 5 deletions(-) diff --git a/drivers/gpu/drm/tegra/dc.c b/drivers/gpu/drm/tegra/dc.c index 6553fd238685..054a79f143ae 100644 --- a/drivers/gpu/drm/tegra/dc.c +++ b/drivers/gpu/drm/tegra/dc.c @@ -736,7 +736,6 @@ static const struct drm_crtc_funcs tegra_crtc_funcs = { static void tegra_crtc_disable(struct drm_crtc *crtc) { - struct tegra_dc *dc = to_tegra_dc(crtc); struct drm_device *drm = crtc->dev; struct drm_plane *plane; @@ -752,7 +751,7 @@ static void tegra_crtc_disable(struct drm_crtc *crtc) } } - drm_vblank_off(drm, dc->pipe); + drm_crtc_vblank_off(crtc); } static bool tegra_crtc_mode_fixup(struct drm_crtc *crtc, @@ -841,8 +840,6 @@ static int tegra_crtc_mode_set(struct drm_crtc *crtc, u32 value; int err; - drm_vblank_pre_modeset(crtc->dev, dc->pipe); - err = tegra_crtc_setup_clk(crtc, mode); if (err) { dev_err(dc->dev, "failed to setup clock for CRTC: %d\n", err); @@ -896,6 +893,8 @@ static void tegra_crtc_prepare(struct drm_crtc *crtc) unsigned int syncpt; unsigned long value; + drm_crtc_vblank_off(crtc); + /* hardware initialization */ reset_control_deassert(dc->rst); usleep_range(10000, 20000); @@ -943,7 +942,7 @@ static void tegra_crtc_commit(struct drm_crtc *crtc) value = GENERAL_ACT_REQ | WIN_A_ACT_REQ; tegra_dc_writel(dc, value, DC_CMD_STATE_CONTROL); - drm_vblank_post_modeset(crtc->dev, dc->pipe); + drm_crtc_vblank_on(crtc); } static void tegra_crtc_load_lut(struct drm_crtc *crtc) From 9b0b26580a753d4d6bdd2b8b4ca9a8f3f2d39065 Mon Sep 17 00:00:00 2001 From: Mark Rutland Date: Thu, 13 Nov 2014 12:22:01 +0000 Subject: [PATCH 320/371] arm64: efi: Fix stub cache maintenance While efi-entry.S mentions that efi_entry() will have relocated the kernel image, it actually means that efi_entry will have placed a copy of the kernel in the appropriate location, and until this is branched to at the end of efi_entry.S, all instructions are executed from the original image. Thus while the flush in efi_entry.S does ensure that the copy is visible to noncacheable accesses, it does not guarantee that this is true for the image instructions are being executed from. This could have disasterous effects when the MMU and caches are disabled if the image has not been naturally evicted to the PoC. Additionally, due to a missing dsb following the ic ialluis, the new kernel image is not necessarily clean in the I-cache when it is branched to, with similar potentially disasterous effects. This patch adds additional flushing to ensure that the currently executing stub text is flushed to the PoC and is thus visible to noncacheable accesses. As it is placed after the instructions cache maintenance for the new image and __flush_dcache_area already contains a dsb, we do not need to add a separate barrier to ensure completion of the icache maintenance. Comments are updated to clarify the situation with regard to the two images and the maintenance required for both. Fixes: 3c7f255039a2ad6ee1e3890505caf0d029b22e29 Signed-off-by: Mark Rutland Acked-by: Joel Schopp Reviewed-by: Roy Franz Tested-by: Tom Lendacky Cc: Ard Biesheuvel Cc: Ian Campbell Cc: Leif Lindholm Cc: Mark Salter Cc: Will Deacon Cc: stable@vger.kernel.org Signed-off-by: Catalin Marinas --- arch/arm64/kernel/efi-entry.S | 27 +++++++++++++++++++++------ 1 file changed, 21 insertions(+), 6 deletions(-) diff --git a/arch/arm64/kernel/efi-entry.S b/arch/arm64/kernel/efi-entry.S index 619b1dd7bcde..d18a44940968 100644 --- a/arch/arm64/kernel/efi-entry.S +++ b/arch/arm64/kernel/efi-entry.S @@ -54,18 +54,17 @@ ENTRY(efi_stub_entry) b.eq efi_load_fail /* - * efi_entry() will have relocated the kernel image if necessary - * and we return here with device tree address in x0 and the kernel - * entry point stored at *image_addr. Save those values in registers - * which are callee preserved. + * efi_entry() will have copied the kernel image if necessary and we + * return here with device tree address in x0 and the kernel entry + * point stored at *image_addr. Save those values in registers which + * are callee preserved. */ mov x20, x0 // DTB address ldr x0, [sp, #16] // relocated _text address mov x21, x0 /* - * Flush dcache covering current runtime addresses - * of kernel text/data. Then flush all of icache. + * Calculate size of the kernel Image (same for original and copy). */ adrp x1, _text add x1, x1, #:lo12:_text @@ -73,9 +72,24 @@ ENTRY(efi_stub_entry) add x2, x2, #:lo12:_edata sub x1, x2, x1 + /* + * Flush the copied Image to the PoC, and ensure it is not shadowed by + * stale icache entries from before relocation. + */ bl __flush_dcache_area ic ialluis + /* + * Ensure that the rest of this function (in the original Image) is + * visible when the caches are disabled. The I-cache can't have stale + * entries for the VA range of the current image, so no maintenance is + * necessary. + */ + adr x0, efi_stub_entry + adr x1, efi_stub_entry_end + sub x1, x1, x0 + bl __flush_dcache_area + /* Turn off Dcache and MMU */ mrs x0, CurrentEL cmp x0, #CurrentEL_EL2 @@ -105,4 +119,5 @@ efi_load_fail: ldp x29, x30, [sp], #32 ret +efi_stub_entry_end: ENDPROC(efi_stub_entry) From 287e8c6a41749e5affd6a4faa6a6102ba1594406 Mon Sep 17 00:00:00 2001 From: Min-Hua Chen Date: Wed, 8 Oct 2014 16:45:59 +0100 Subject: [PATCH 321/371] arm64: Fix data type for physical address Use phys_addr_t for physical address in alloc_init_pud. Although phys_addr_t and unsigned long are 64 bit in arm64, it is better to use phys_addr_t to describe physical addresses. Signed-off-by: Min-Hua Chen Signed-off-by: Catalin Marinas --- arch/arm64/mm/mmu.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm64/mm/mmu.c b/arch/arm64/mm/mmu.c index 0bf90d26e745..f4f8b500f74c 100644 --- a/arch/arm64/mm/mmu.c +++ b/arch/arm64/mm/mmu.c @@ -202,7 +202,7 @@ static void __init alloc_init_pmd(pud_t *pud, unsigned long addr, } static void __init alloc_init_pud(pgd_t *pgd, unsigned long addr, - unsigned long end, unsigned long phys, + unsigned long end, phys_addr_t phys, int map_io) { pud_t *pud; From 97fc15436b36ee3956efad83e22a557991f7d19d Mon Sep 17 00:00:00 2001 From: Kyle McMartin Date: Wed, 12 Nov 2014 21:07:44 +0000 Subject: [PATCH 322/371] arm64: __clear_user: handle exceptions on strb MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit ARM64 currently doesn't fix up faults on the single-byte (strb) case of __clear_user... which means that we can cause a nasty kernel panic as an ordinary user with any multiple PAGE_SIZE+1 read from /dev/zero. i.e.: dd if=/dev/zero of=foo ibs=1 count=1 (or ibs=65537, etc.) This is a pretty obscure bug in the general case since we'll only __do_kernel_fault (since there's no extable entry for pc) if the mmap_sem is contended. However, with CONFIG_DEBUG_VM enabled, we'll always fault. if (!down_read_trylock(&mm->mmap_sem)) { if (!user_mode(regs) && !search_exception_tables(regs->pc)) goto no_context; retry: down_read(&mm->mmap_sem); } else { /* * The above down_read_trylock() might have succeeded in * which * case, we'll have missed the might_sleep() from * down_read(). */ might_sleep(); if (!user_mode(regs) && !search_exception_tables(regs->pc)) goto no_context; } Fix that by adding an extable entry for the strb instruction, since it touches user memory, similar to the other stores in __clear_user. Signed-off-by: Kyle McMartin Reported-by: Miloš Prchlík Cc: stable@vger.kernel.org Signed-off-by: Catalin Marinas --- arch/arm64/lib/clear_user.S | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm64/lib/clear_user.S b/arch/arm64/lib/clear_user.S index 6e0ed93d51fe..c17967fdf5f6 100644 --- a/arch/arm64/lib/clear_user.S +++ b/arch/arm64/lib/clear_user.S @@ -46,7 +46,7 @@ USER(9f, strh wzr, [x0], #2 ) sub x1, x1, #2 4: adds x1, x1, #1 b.mi 5f - strb wzr, [x0] +USER(9f, strb wzr, [x0] ) 5: mov x0, #0 ret ENDPROC(__clear_user) From 899d5933b2dd2720f2b20b01eaa07871aa6ad096 Mon Sep 17 00:00:00 2001 From: William Cohen Date: Tue, 11 Nov 2014 09:41:27 -0500 Subject: [PATCH 323/371] Correct the race condition in aarch64_insn_patch_text_sync() When experimenting with patches to provide kprobes support for aarch64 smp machines would hang when inserting breakpoints into kernel code. The hangs were caused by a race condition in the code called by aarch64_insn_patch_text_sync(). The first processor in the aarch64_insn_patch_text_cb() function would patch the code while other processors were still entering the function and incrementing the cpu_count field. This resulted in some processors never observing the exit condition and exiting the function. Thus, processors in the system hung. The first processor to enter the patching function performs the patching and signals that the patching is complete with an increment of the cpu_count field. When all the processors have incremented the cpu_count field the cpu_count will be num_cpus_online()+1 and they will return to normal execution. Fixes: ae16480785de arm64: introduce interfaces to hotpatch kernel and module code Signed-off-by: William Cohen Acked-by: Will Deacon Cc: Signed-off-by: Catalin Marinas --- arch/arm64/kernel/insn.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/arch/arm64/kernel/insn.c b/arch/arm64/kernel/insn.c index e007714ded04..8cd27fedc8b6 100644 --- a/arch/arm64/kernel/insn.c +++ b/arch/arm64/kernel/insn.c @@ -163,9 +163,10 @@ static int __kprobes aarch64_insn_patch_text_cb(void *arg) * which ends with "dsb; isb" pair guaranteeing global * visibility. */ - atomic_set(&pp->cpu_count, -1); + /* Notify other processors with an additional increment. */ + atomic_inc(&pp->cpu_count); } else { - while (atomic_read(&pp->cpu_count) != -1) + while (atomic_read(&pp->cpu_count) <= num_online_cpus()) cpu_relax(); isb(); } From 5fd6690c8fb2c3012012979dd8ce7492c69c5d86 Mon Sep 17 00:00:00 2001 From: Neil Zhang Date: Tue, 28 Oct 2014 05:44:01 +0000 Subject: [PATCH 324/371] arm64: ARCH_PFN_OFFSET should be unsigned long pfns are unsigned long, but PHYS_PFN_OFFSET is phys_addr_t. This leads to page_to_pfn() returning phys_addr_t which cause type mismatches in some print statements. Signed-off-by: Neil Zhang Signed-off-by: Catalin Marinas --- arch/arm64/include/asm/memory.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm64/include/asm/memory.h b/arch/arm64/include/asm/memory.h index ccc7087d3c4e..a62cd077457b 100644 --- a/arch/arm64/include/asm/memory.h +++ b/arch/arm64/include/asm/memory.h @@ -142,7 +142,7 @@ static inline void *phys_to_virt(phys_addr_t x) * virt_to_page(k) convert a _valid_ virtual address to struct page * * virt_addr_valid(k) indicates whether a virtual address is valid */ -#define ARCH_PFN_OFFSET PHYS_PFN_OFFSET +#define ARCH_PFN_OFFSET ((unsigned long)PHYS_PFN_OFFSET) #define virt_to_page(kaddr) pfn_to_page(__pa(kaddr) >> PAGE_SHIFT) #define virt_addr_valid(kaddr) pfn_valid(__pa(kaddr) >> PAGE_SHIFT) From b3ecba096729f521312d1863ad22530695527aed Mon Sep 17 00:00:00 2001 From: Jeff Layton Date: Thu, 13 Nov 2014 07:30:46 -0500 Subject: [PATCH 325/371] sunrpc: fix sleeping under rcu_read_lock in gss_stringify_acceptor Bruce reported that he was seeing the following BUG pop: BUG: sleeping function called from invalid context at mm/slab.c:2846 in_atomic(): 0, irqs_disabled(): 0, pid: 4539, name: mount.nfs 2 locks held by mount.nfs/4539: #0: (nfs_clid_init_mutex){+.+.+.}, at: [] nfs4_discover_server_trunking+0x4a/0x2f0 [nfsv4] #1: (rcu_read_lock){......}, at: [] gss_stringify_acceptor+0x5/0xb0 [auth_rpcgss] Preemption disabled at:[] printk+0x4d/0x4f CPU: 3 PID: 4539 Comm: mount.nfs Not tainted 3.18.0-rc1-00013-g5b095e9 #3393 Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 ffff880021499390 ffff8800381476a8 ffffffff81a534cf 0000000000000001 0000000000000000 ffff8800381476c8 ffffffff81097854 00000000000000d0 0000000000000018 ffff880038147718 ffffffff8118e4f3 0000000020479f00 Call Trace: [] dump_stack+0x4f/0x7c [] __might_sleep+0x114/0x180 [] __kmalloc+0x1a3/0x280 [] gss_stringify_acceptor+0x58/0xb0 [auth_rpcgss] [] ? gss_stringify_acceptor+0x5/0xb0 [auth_rpcgss] [] rpcauth_stringify_acceptor+0x18/0x30 [sunrpc] [] nfs4_proc_setclientid+0x199/0x380 [nfsv4] [] ? nfs4_proc_setclientid+0x200/0x380 [nfsv4] [] nfs40_discover_server_trunking+0xda/0x150 [nfsv4] [] ? nfs40_discover_server_trunking+0x5/0x150 [nfsv4] [] nfs4_discover_server_trunking+0x7f/0x2f0 [nfsv4] [] nfs4_init_client+0x104/0x2f0 [nfsv4] [] nfs_get_client+0x314/0x3f0 [nfs] [] ? nfs_get_client+0xe0/0x3f0 [nfs] [] nfs4_set_client+0x8a/0x110 [nfsv4] [] ? __rpc_init_priority_wait_queue+0xa8/0xf0 [sunrpc] [] nfs4_create_server+0x12f/0x390 [nfsv4] [] nfs4_remote_mount+0x32/0x60 [nfsv4] [] mount_fs+0x39/0x1b0 [] ? __alloc_percpu+0x15/0x20 [] vfs_kern_mount+0x6b/0x150 [] nfs_do_root_mount+0x86/0xc0 [nfsv4] [] nfs4_try_mount+0x44/0xc0 [nfsv4] [] ? get_nfs_version+0x27/0x90 [nfs] [] nfs_fs_mount+0x47d/0xd60 [nfs] [] ? mutex_unlock+0xe/0x10 [] ? nfs_remount+0x430/0x430 [nfs] [] ? nfs_clone_super+0x140/0x140 [nfs] [] mount_fs+0x39/0x1b0 [] ? __alloc_percpu+0x15/0x20 [] vfs_kern_mount+0x6b/0x150 [] do_mount+0x210/0xbe0 [] ? copy_mount_options+0x3a/0x160 [] SyS_mount+0x6f/0xb0 [] system_call_fastpath+0x12/0x17 Sleeping under the rcu_read_lock is bad. This patch fixes it by dropping the rcu_read_lock before doing the allocation and then reacquiring it and redoing the dereference before doing the copy. If we find that the string has somehow grown in the meantime, we'll reallocate and try again. Cc: # v3.17+ Reported-by: "J. Bruce Fields" Signed-off-by: Jeff Layton Signed-off-by: Trond Myklebust --- net/sunrpc/auth_gss/auth_gss.c | 35 +++++++++++++++++++++++++++++----- 1 file changed, 30 insertions(+), 5 deletions(-) diff --git a/net/sunrpc/auth_gss/auth_gss.c b/net/sunrpc/auth_gss/auth_gss.c index afb292cd797d..53ed8d3f8897 100644 --- a/net/sunrpc/auth_gss/auth_gss.c +++ b/net/sunrpc/auth_gss/auth_gss.c @@ -1353,6 +1353,7 @@ gss_stringify_acceptor(struct rpc_cred *cred) char *string = NULL; struct gss_cred *gss_cred = container_of(cred, struct gss_cred, gc_base); struct gss_cl_ctx *ctx; + unsigned int len; struct xdr_netobj *acceptor; rcu_read_lock(); @@ -1360,15 +1361,39 @@ gss_stringify_acceptor(struct rpc_cred *cred) if (!ctx) goto out; - acceptor = &ctx->gc_acceptor; + len = ctx->gc_acceptor.len; + rcu_read_unlock(); /* no point if there's no string */ - if (!acceptor->len) - goto out; - - string = kmalloc(acceptor->len + 1, GFP_KERNEL); + if (!len) + return NULL; +realloc: + string = kmalloc(len + 1, GFP_KERNEL); if (!string) + return NULL; + + rcu_read_lock(); + ctx = rcu_dereference(gss_cred->gc_ctx); + + /* did the ctx disappear or was it replaced by one with no acceptor? */ + if (!ctx || !ctx->gc_acceptor.len) { + kfree(string); + string = NULL; goto out; + } + + acceptor = &ctx->gc_acceptor; + + /* + * Did we find a new acceptor that's longer than the original? Allocate + * a longer buffer and try again. + */ + if (len < acceptor->len) { + len = acceptor->len; + rcu_read_unlock(); + kfree(string); + goto realloc; + } memcpy(string, acceptor->data, acceptor->len); string[acceptor->len] = '\0'; From 3231300bb986947a6b74e7075d84a2f434e4d788 Mon Sep 17 00:00:00 2001 From: "Yan, Zheng" Date: Wed, 22 Oct 2014 17:13:26 -0700 Subject: [PATCH 326/371] ceph: fix flush tid comparision TID of cap flush ack is 64 bits, but ceph_inode_info::flushing_cap_tid is only 16 bits. 16 bits should be plenty to let the cap flush updates pipeline appropriately, but we need to cast in the proper direction when comparing these differently-sized versions. So downcast the 64-bits one to 16 bits. Reflects ceph.git commit a5184cf46a6e867287e24aeb731634828467cd98. Signed-off-by: Yan, Zheng Reviewed-by: Ilya Dryomov --- fs/ceph/caps.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/ceph/caps.c b/fs/ceph/caps.c index 659f2ea9e6f7..cefca661464b 100644 --- a/fs/ceph/caps.c +++ b/fs/ceph/caps.c @@ -2638,7 +2638,7 @@ static void handle_cap_flush_ack(struct inode *inode, u64 flush_tid, for (i = 0; i < CEPH_CAP_BITS; i++) if ((dirty & (1 << i)) && - flush_tid == ci->i_cap_flush_tid[i]) + (u16)flush_tid == ci->i_cap_flush_tid[i]) cleaned |= 1 << i; dout("handle_cap_flush_ack inode %p mds%d seq %d on %s cleaned %s," From aaef31703a0cf6a733e651885bfb49edc3ac6774 Mon Sep 17 00:00:00 2001 From: Ilya Dryomov Date: Thu, 23 Oct 2014 00:25:22 +0400 Subject: [PATCH 327/371] libceph: do not crash on large auth tickets Large (greater than 32k, the value of PAGE_ALLOC_COSTLY_ORDER) auth tickets will have their buffers vmalloc'ed, which leads to the following crash in crypto: [ 28.685082] BUG: unable to handle kernel paging request at ffffeb04000032c0 [ 28.686032] IP: [] scatterwalk_pagedone+0x22/0x80 [ 28.686032] PGD 0 [ 28.688088] Oops: 0000 [#1] PREEMPT SMP [ 28.688088] Modules linked in: [ 28.688088] CPU: 0 PID: 878 Comm: kworker/0:2 Not tainted 3.17.0-vm+ #305 [ 28.688088] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2007 [ 28.688088] Workqueue: ceph-msgr con_work [ 28.688088] task: ffff88011a7f9030 ti: ffff8800d903c000 task.ti: ffff8800d903c000 [ 28.688088] RIP: 0010:[] [] scatterwalk_pagedone+0x22/0x80 [ 28.688088] RSP: 0018:ffff8800d903f688 EFLAGS: 00010286 [ 28.688088] RAX: ffffeb04000032c0 RBX: ffff8800d903f718 RCX: ffffeb04000032c0 [ 28.688088] RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff8800d903f750 [ 28.688088] RBP: ffff8800d903f688 R08: 00000000000007de R09: ffff8800d903f880 [ 28.688088] R10: 18df467c72d6257b R11: 0000000000000000 R12: 0000000000000010 [ 28.688088] R13: ffff8800d903f750 R14: ffff8800d903f8a0 R15: 0000000000000000 [ 28.688088] FS: 00007f50a41c7700(0000) GS:ffff88011fc00000(0000) knlGS:0000000000000000 [ 28.688088] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b [ 28.688088] CR2: ffffeb04000032c0 CR3: 00000000da3f3000 CR4: 00000000000006b0 [ 28.688088] Stack: [ 28.688088] ffff8800d903f698 ffffffff81392ca8 ffff8800d903f6e8 ffffffff81395d32 [ 28.688088] ffff8800dac96000 ffff880000000000 ffff8800d903f980 ffff880119b7e020 [ 28.688088] ffff880119b7e010 0000000000000000 0000000000000010 0000000000000010 [ 28.688088] Call Trace: [ 28.688088] [] scatterwalk_done+0x38/0x40 [ 28.688088] [] scatterwalk_done+0x38/0x40 [ 28.688088] [] blkcipher_walk_done+0x182/0x220 [ 28.688088] [] crypto_cbc_encrypt+0x15f/0x180 [ 28.688088] [] ? crypto_aes_set_key+0x30/0x30 [ 28.688088] [] ceph_aes_encrypt2+0x29c/0x2e0 [ 28.688088] [] ceph_encrypt2+0x93/0xb0 [ 28.688088] [] ceph_x_encrypt+0x4a/0x60 [ 28.688088] [] ? ceph_buffer_new+0x5d/0xf0 [ 28.688088] [] ceph_x_build_authorizer.isra.6+0x297/0x360 [ 28.688088] [] ? kmem_cache_alloc_trace+0x11b/0x1c0 [ 28.688088] [] ? ceph_auth_create_authorizer+0x36/0x80 [ 28.688088] [] ceph_x_create_authorizer+0x63/0xd0 [ 28.688088] [] ceph_auth_create_authorizer+0x54/0x80 [ 28.688088] [] get_authorizer+0x80/0xd0 [ 28.688088] [] prepare_write_connect+0x18b/0x2b0 [ 28.688088] [] try_read+0x1e59/0x1f10 This is because we set up crypto scatterlists as if all buffers were kmalloc'ed. Fix it. Cc: stable@vger.kernel.org Signed-off-by: Ilya Dryomov Reviewed-by: Sage Weil --- net/ceph/crypto.c | 169 ++++++++++++++++++++++++++++++++++++---------- 1 file changed, 132 insertions(+), 37 deletions(-) diff --git a/net/ceph/crypto.c b/net/ceph/crypto.c index 62fc5e7a9acf..790fe89d90c0 100644 --- a/net/ceph/crypto.c +++ b/net/ceph/crypto.c @@ -90,11 +90,82 @@ static struct crypto_blkcipher *ceph_crypto_alloc_cipher(void) static const u8 *aes_iv = (u8 *)CEPH_AES_IV; +/* + * Should be used for buffers allocated with ceph_kvmalloc(). + * Currently these are encrypt out-buffer (ceph_buffer) and decrypt + * in-buffer (msg front). + * + * Dispose of @sgt with teardown_sgtable(). + * + * @prealloc_sg is to avoid memory allocation inside sg_alloc_table() + * in cases where a single sg is sufficient. No attempt to reduce the + * number of sgs by squeezing physically contiguous pages together is + * made though, for simplicity. + */ +static int setup_sgtable(struct sg_table *sgt, struct scatterlist *prealloc_sg, + const void *buf, unsigned int buf_len) +{ + struct scatterlist *sg; + const bool is_vmalloc = is_vmalloc_addr(buf); + unsigned int off = offset_in_page(buf); + unsigned int chunk_cnt = 1; + unsigned int chunk_len = PAGE_ALIGN(off + buf_len); + int i; + int ret; + + if (buf_len == 0) { + memset(sgt, 0, sizeof(*sgt)); + return -EINVAL; + } + + if (is_vmalloc) { + chunk_cnt = chunk_len >> PAGE_SHIFT; + chunk_len = PAGE_SIZE; + } + + if (chunk_cnt > 1) { + ret = sg_alloc_table(sgt, chunk_cnt, GFP_NOFS); + if (ret) + return ret; + } else { + WARN_ON(chunk_cnt != 1); + sg_init_table(prealloc_sg, 1); + sgt->sgl = prealloc_sg; + sgt->nents = sgt->orig_nents = 1; + } + + for_each_sg(sgt->sgl, sg, sgt->orig_nents, i) { + struct page *page; + unsigned int len = min(chunk_len - off, buf_len); + + if (is_vmalloc) + page = vmalloc_to_page(buf); + else + page = virt_to_page(buf); + + sg_set_page(sg, page, len, off); + + off = 0; + buf += len; + buf_len -= len; + } + WARN_ON(buf_len != 0); + + return 0; +} + +static void teardown_sgtable(struct sg_table *sgt) +{ + if (sgt->orig_nents > 1) + sg_free_table(sgt); +} + static int ceph_aes_encrypt(const void *key, int key_len, void *dst, size_t *dst_len, const void *src, size_t src_len) { - struct scatterlist sg_in[2], sg_out[1]; + struct scatterlist sg_in[2], prealloc_sg; + struct sg_table sg_out; struct crypto_blkcipher *tfm = ceph_crypto_alloc_cipher(); struct blkcipher_desc desc = { .tfm = tfm, .flags = 0 }; int ret; @@ -110,16 +181,18 @@ static int ceph_aes_encrypt(const void *key, int key_len, *dst_len = src_len + zero_padding; - crypto_blkcipher_setkey((void *)tfm, key, key_len); sg_init_table(sg_in, 2); sg_set_buf(&sg_in[0], src, src_len); sg_set_buf(&sg_in[1], pad, zero_padding); - sg_init_table(sg_out, 1); - sg_set_buf(sg_out, dst, *dst_len); + ret = setup_sgtable(&sg_out, &prealloc_sg, dst, *dst_len); + if (ret) + goto out_tfm; + + crypto_blkcipher_setkey((void *)tfm, key, key_len); iv = crypto_blkcipher_crt(tfm)->iv; ivsize = crypto_blkcipher_ivsize(tfm); - memcpy(iv, aes_iv, ivsize); + /* print_hex_dump(KERN_ERR, "enc key: ", DUMP_PREFIX_NONE, 16, 1, key, key_len, 1); @@ -128,16 +201,22 @@ static int ceph_aes_encrypt(const void *key, int key_len, print_hex_dump(KERN_ERR, "enc pad: ", DUMP_PREFIX_NONE, 16, 1, pad, zero_padding, 1); */ - ret = crypto_blkcipher_encrypt(&desc, sg_out, sg_in, + ret = crypto_blkcipher_encrypt(&desc, sg_out.sgl, sg_in, src_len + zero_padding); - crypto_free_blkcipher(tfm); - if (ret < 0) + if (ret < 0) { pr_err("ceph_aes_crypt failed %d\n", ret); + goto out_sg; + } /* print_hex_dump(KERN_ERR, "enc out: ", DUMP_PREFIX_NONE, 16, 1, dst, *dst_len, 1); */ - return 0; + +out_sg: + teardown_sgtable(&sg_out); +out_tfm: + crypto_free_blkcipher(tfm); + return ret; } static int ceph_aes_encrypt2(const void *key, int key_len, void *dst, @@ -145,7 +224,8 @@ static int ceph_aes_encrypt2(const void *key, int key_len, void *dst, const void *src1, size_t src1_len, const void *src2, size_t src2_len) { - struct scatterlist sg_in[3], sg_out[1]; + struct scatterlist sg_in[3], prealloc_sg; + struct sg_table sg_out; struct crypto_blkcipher *tfm = ceph_crypto_alloc_cipher(); struct blkcipher_desc desc = { .tfm = tfm, .flags = 0 }; int ret; @@ -161,17 +241,19 @@ static int ceph_aes_encrypt2(const void *key, int key_len, void *dst, *dst_len = src1_len + src2_len + zero_padding; - crypto_blkcipher_setkey((void *)tfm, key, key_len); sg_init_table(sg_in, 3); sg_set_buf(&sg_in[0], src1, src1_len); sg_set_buf(&sg_in[1], src2, src2_len); sg_set_buf(&sg_in[2], pad, zero_padding); - sg_init_table(sg_out, 1); - sg_set_buf(sg_out, dst, *dst_len); + ret = setup_sgtable(&sg_out, &prealloc_sg, dst, *dst_len); + if (ret) + goto out_tfm; + + crypto_blkcipher_setkey((void *)tfm, key, key_len); iv = crypto_blkcipher_crt(tfm)->iv; ivsize = crypto_blkcipher_ivsize(tfm); - memcpy(iv, aes_iv, ivsize); + /* print_hex_dump(KERN_ERR, "enc key: ", DUMP_PREFIX_NONE, 16, 1, key, key_len, 1); @@ -182,23 +264,30 @@ static int ceph_aes_encrypt2(const void *key, int key_len, void *dst, print_hex_dump(KERN_ERR, "enc pad: ", DUMP_PREFIX_NONE, 16, 1, pad, zero_padding, 1); */ - ret = crypto_blkcipher_encrypt(&desc, sg_out, sg_in, + ret = crypto_blkcipher_encrypt(&desc, sg_out.sgl, sg_in, src1_len + src2_len + zero_padding); - crypto_free_blkcipher(tfm); - if (ret < 0) + if (ret < 0) { pr_err("ceph_aes_crypt2 failed %d\n", ret); + goto out_sg; + } /* print_hex_dump(KERN_ERR, "enc out: ", DUMP_PREFIX_NONE, 16, 1, dst, *dst_len, 1); */ - return 0; + +out_sg: + teardown_sgtable(&sg_out); +out_tfm: + crypto_free_blkcipher(tfm); + return ret; } static int ceph_aes_decrypt(const void *key, int key_len, void *dst, size_t *dst_len, const void *src, size_t src_len) { - struct scatterlist sg_in[1], sg_out[2]; + struct sg_table sg_in; + struct scatterlist sg_out[2], prealloc_sg; struct crypto_blkcipher *tfm = ceph_crypto_alloc_cipher(); struct blkcipher_desc desc = { .tfm = tfm }; char pad[16]; @@ -210,16 +299,16 @@ static int ceph_aes_decrypt(const void *key, int key_len, if (IS_ERR(tfm)) return PTR_ERR(tfm); - crypto_blkcipher_setkey((void *)tfm, key, key_len); - sg_init_table(sg_in, 1); sg_init_table(sg_out, 2); - sg_set_buf(sg_in, src, src_len); sg_set_buf(&sg_out[0], dst, *dst_len); sg_set_buf(&sg_out[1], pad, sizeof(pad)); + ret = setup_sgtable(&sg_in, &prealloc_sg, src, src_len); + if (ret) + goto out_tfm; + crypto_blkcipher_setkey((void *)tfm, key, key_len); iv = crypto_blkcipher_crt(tfm)->iv; ivsize = crypto_blkcipher_ivsize(tfm); - memcpy(iv, aes_iv, ivsize); /* @@ -228,12 +317,10 @@ static int ceph_aes_decrypt(const void *key, int key_len, print_hex_dump(KERN_ERR, "dec in: ", DUMP_PREFIX_NONE, 16, 1, src, src_len, 1); */ - - ret = crypto_blkcipher_decrypt(&desc, sg_out, sg_in, src_len); - crypto_free_blkcipher(tfm); + ret = crypto_blkcipher_decrypt(&desc, sg_out, sg_in.sgl, src_len); if (ret < 0) { pr_err("ceph_aes_decrypt failed %d\n", ret); - return ret; + goto out_sg; } if (src_len <= *dst_len) @@ -251,7 +338,12 @@ static int ceph_aes_decrypt(const void *key, int key_len, print_hex_dump(KERN_ERR, "dec out: ", DUMP_PREFIX_NONE, 16, 1, dst, *dst_len, 1); */ - return 0; + +out_sg: + teardown_sgtable(&sg_in); +out_tfm: + crypto_free_blkcipher(tfm); + return ret; } static int ceph_aes_decrypt2(const void *key, int key_len, @@ -259,7 +351,8 @@ static int ceph_aes_decrypt2(const void *key, int key_len, void *dst2, size_t *dst2_len, const void *src, size_t src_len) { - struct scatterlist sg_in[1], sg_out[3]; + struct sg_table sg_in; + struct scatterlist sg_out[3], prealloc_sg; struct crypto_blkcipher *tfm = ceph_crypto_alloc_cipher(); struct blkcipher_desc desc = { .tfm = tfm }; char pad[16]; @@ -271,17 +364,17 @@ static int ceph_aes_decrypt2(const void *key, int key_len, if (IS_ERR(tfm)) return PTR_ERR(tfm); - sg_init_table(sg_in, 1); - sg_set_buf(sg_in, src, src_len); sg_init_table(sg_out, 3); sg_set_buf(&sg_out[0], dst1, *dst1_len); sg_set_buf(&sg_out[1], dst2, *dst2_len); sg_set_buf(&sg_out[2], pad, sizeof(pad)); + ret = setup_sgtable(&sg_in, &prealloc_sg, src, src_len); + if (ret) + goto out_tfm; crypto_blkcipher_setkey((void *)tfm, key, key_len); iv = crypto_blkcipher_crt(tfm)->iv; ivsize = crypto_blkcipher_ivsize(tfm); - memcpy(iv, aes_iv, ivsize); /* @@ -290,12 +383,10 @@ static int ceph_aes_decrypt2(const void *key, int key_len, print_hex_dump(KERN_ERR, "dec in: ", DUMP_PREFIX_NONE, 16, 1, src, src_len, 1); */ - - ret = crypto_blkcipher_decrypt(&desc, sg_out, sg_in, src_len); - crypto_free_blkcipher(tfm); + ret = crypto_blkcipher_decrypt(&desc, sg_out, sg_in.sgl, src_len); if (ret < 0) { pr_err("ceph_aes_decrypt failed %d\n", ret); - return ret; + goto out_sg; } if (src_len <= *dst1_len) @@ -325,7 +416,11 @@ static int ceph_aes_decrypt2(const void *key, int key_len, dst2, *dst2_len, 1); */ - return 0; +out_sg: + teardown_sgtable(&sg_in); +out_tfm: + crypto_free_blkcipher(tfm); + return ret; } From a390de0208e7f2f8fdb2fbf970240e4f7b308037 Mon Sep 17 00:00:00 2001 From: Ilya Dryomov Date: Tue, 4 Nov 2014 18:32:14 +0300 Subject: [PATCH 328/371] libceph: unlink from o_linger_requests when clearing r_osd Requests have to be unlinked from both osd->o_requests (normal requests) and osd->o_linger_requests (linger requests) lists when clearing req->r_osd. Otherwise __unregister_linger_request() gets confused and we trip over a !list_empty(&osd->o_linger_requests) assert in __remove_osd(). MON=1 OSD=1: # cat remove-osd.sh #!/bin/bash rbd create --size 1 test DEV=$(rbd map test) ceph osd out 0 sleep 3 rbd map dne/dne # obtain a new osdmap as a side effect rbd unmap $DEV & # will block sleep 3 ceph osd in 0 Signed-off-by: Ilya Dryomov Reviewed-by: Alex Elder --- net/ceph/osd_client.c | 1 + 1 file changed, 1 insertion(+) diff --git a/net/ceph/osd_client.c b/net/ceph/osd_client.c index f3fc54eac09d..75abaa87abac 100644 --- a/net/ceph/osd_client.c +++ b/net/ceph/osd_client.c @@ -1395,6 +1395,7 @@ static int __map_request(struct ceph_osd_client *osdc, if (req->r_osd) { __cancel_request(req); list_del_init(&req->r_osd_item); + list_del_init(&req->r_linger_osd_item); req->r_osd = NULL; } From ba9d114ec5578e6e99a4dfa37ff8ae688040fd64 Mon Sep 17 00:00:00 2001 From: Ilya Dryomov Date: Wed, 5 Nov 2014 15:45:58 +0300 Subject: [PATCH 329/371] libceph: clear r_req_lru_item in __unregister_linger_request() kick_requests() can put linger requests on the notarget list. This means we need to clear the much-overloaded req->r_req_lru_item in __unregister_linger_request() as well, or we get an assertion failure in ceph_osdc_release_request() - !list_empty(&req->r_req_lru_item). AFAICT the assumption was that registered linger requests cannot be on any of req->r_req_lru_item lists, but that's clearly not the case. Signed-off-by: Ilya Dryomov Reviewed-by: Alex Elder --- net/ceph/osd_client.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/net/ceph/osd_client.c b/net/ceph/osd_client.c index 75abaa87abac..decc3b74e65f 100644 --- a/net/ceph/osd_client.c +++ b/net/ceph/osd_client.c @@ -1254,6 +1254,8 @@ static void __unregister_linger_request(struct ceph_osd_client *osdc, if (list_empty(&req->r_osd_item)) req->r_osd = NULL; } + + list_del_init(&req->r_req_lru_item); /* can be on notarget */ ceph_osdc_put_request(req); } From cc9f1f518cec079289d11d732efa490306b1ddad Mon Sep 17 00:00:00 2001 From: Ilya Dryomov Date: Wed, 5 Nov 2014 19:33:44 +0300 Subject: [PATCH 330/371] libceph: change from BUG to WARN for __remove_osd() asserts No reason to use BUG_ON for osd request list assertions. Signed-off-by: Ilya Dryomov Reviewed-by: Alex Elder --- net/ceph/osd_client.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/net/ceph/osd_client.c b/net/ceph/osd_client.c index decc3b74e65f..6f164289bde8 100644 --- a/net/ceph/osd_client.c +++ b/net/ceph/osd_client.c @@ -1007,8 +1007,8 @@ static void put_osd(struct ceph_osd *osd) static void __remove_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd) { dout("__remove_osd %p\n", osd); - BUG_ON(!list_empty(&osd->o_requests)); - BUG_ON(!list_empty(&osd->o_linger_requests)); + WARN_ON(!list_empty(&osd->o_requests)); + WARN_ON(!list_empty(&osd->o_linger_requests)); rb_erase(&osd->o_node, &osdc->osds); list_del_init(&osd->o_osd_lru); From 242bcd5ba1dcea802c0ad03344f626a727212399 Mon Sep 17 00:00:00 2001 From: Alexander Kochetkov Date: Thu, 13 Nov 2014 05:26:19 +0400 Subject: [PATCH 331/371] net/smsc911x: Fix rare soft reset timeout issue due to PHY power-down mode The patch affect SMSC LAN generation 4 chips with integrated PHY (LAN9221). It is possible that PHY could enter power-down mode (ENERGYON clear), between ENERGYON bit check in smsc911x_phy_disable_energy_detect and SRST bit set in smsc911x_soft_reset. This could happen, for example, if someone disconnect ethernet cable between the checks. The PHY in a power-down mode would prevent the MAC portion of chip to be software reseted. Initially found by code review, confirmed later using test case. This is low probability issue, and in order to reproduce it you have to run the script: while true; do ifconfig eth0 down ifconfig eth0 up || break done While the script is running you have to plug/unplug ethernet cable many times (using gpio controlled ethernet switch, for example) until get: [ 4516.477783] ADDRCONF(NETDEV_UP): eth0: link is not ready [ 4516.512207] smsc911x smsc911x.0: eth0: SMSC911x/921x identified at 0xce006000, IRQ: 336 [ 4516.524658] ADDRCONF(NETDEV_UP): eth0: link is not ready [ 4516.559082] smsc911x smsc911x.0: eth0: SMSC911x/921x identified at 0xce006000, IRQ: 336 [ 4516.571990] ADDRCONF(NETDEV_UP): eth0: link is not ready ifconfig: SIOCSIFFLAGS: Input/output error The patch was reviewed by Steve Glendinning and Microchip Team. Signed-off-by: Alexander Kochetkov Acked-by: Steve Glendinning Signed-off-by: David S. Miller --- drivers/net/ethernet/smsc/smsc911x.c | 8 ++------ 1 file changed, 2 insertions(+), 6 deletions(-) diff --git a/drivers/net/ethernet/smsc/smsc911x.c b/drivers/net/ethernet/smsc/smsc911x.c index affb29da353e..1e1f6194cb37 100644 --- a/drivers/net/ethernet/smsc/smsc911x.c +++ b/drivers/net/ethernet/smsc/smsc911x.c @@ -1356,12 +1356,8 @@ static int smsc911x_phy_disable_energy_detect(struct smsc911x_data *pdata) return rc; } - /* - * If energy is detected the PHY is already awake so is not necessary - * to disable the energy detect power-down mode. - */ - if ((rc & MII_LAN83C185_EDPWRDOWN) && - !(rc & MII_LAN83C185_ENERGYON)) { + /* Only disable if energy detect mode is already enabled */ + if (rc & MII_LAN83C185_EDPWRDOWN) { /* Disable energy detect mode for this SMSC Transceivers */ rc = phy_write(pdata->phy_dev, MII_LAN83C185_CTRL_STATUS, rc & (~MII_LAN83C185_EDPWRDOWN)); From 6ff53fd37175e35dc4f70b0e8f48b28338fbee29 Mon Sep 17 00:00:00 2001 From: Alexander Kochetkov Date: Thu, 13 Nov 2014 05:26:20 +0400 Subject: [PATCH 332/371] net/smsc911x: Fix delays in the PHY enable/disable routines Increased delay in the smsc911x_phy_disable_energy_detect (from 1ms to 2ms). Dropped delays in the smsc911x_phy_enable_energy_detect (100ms and 1ms). The patch affect SMSC LAN generation 4 chips with integrated PHY (LAN9221). I saw problems with soft reset due to wrong udelay timings. After I fixed udelay, I measured the time needed to bring integrated PHY from power-down to operational mode (the time beetween clearing EDPWRDOWN bit and soft reset complete event). I got 1ms (measured using ktime_get). The value is equal to the current value (1ms) used in the smsc911x_phy_disable_energy_detect. It is near the upper bound and in order to avoid rare soft reset faults it is doubled (2ms). I don't know official timing for bringing up integrated PHY as specs doesn't clarify this (or may be I didn't found). It looks safe to drop delays before and after setting EDPWRDOWN bit (enable PHY power-down mode). I didn't saw any regressions with the patch. The patch was reviewed by Steve Glendinning and Microchip Team. Signed-off-by: Alexander Kochetkov Acked-by: Steve Glendinning Signed-off-by: David S. Miller --- drivers/net/ethernet/smsc/smsc911x.c | 7 ++----- 1 file changed, 2 insertions(+), 5 deletions(-) diff --git a/drivers/net/ethernet/smsc/smsc911x.c b/drivers/net/ethernet/smsc/smsc911x.c index 1e1f6194cb37..c3bf17f89b05 100644 --- a/drivers/net/ethernet/smsc/smsc911x.c +++ b/drivers/net/ethernet/smsc/smsc911x.c @@ -1366,8 +1366,8 @@ static int smsc911x_phy_disable_energy_detect(struct smsc911x_data *pdata) SMSC_WARN(pdata, drv, "Failed writing PHY control reg"); return rc; } - - mdelay(1); + /* Allow PHY to wakeup */ + mdelay(2); } return 0; @@ -1389,7 +1389,6 @@ static int smsc911x_phy_enable_energy_detect(struct smsc911x_data *pdata) /* Only enable if energy detect mode is already disabled */ if (!(rc & MII_LAN83C185_EDPWRDOWN)) { - mdelay(100); /* Enable energy detect mode for this SMSC Transceivers */ rc = phy_write(pdata->phy_dev, MII_LAN83C185_CTRL_STATUS, rc | MII_LAN83C185_EDPWRDOWN); @@ -1398,8 +1397,6 @@ static int smsc911x_phy_enable_energy_detect(struct smsc911x_data *pdata) SMSC_WARN(pdata, drv, "Failed writing PHY control reg"); return rc; } - - mdelay(1); } return 0; } From 0c828f2f8395fb5e7faf0a116e476a3ce992a199 Mon Sep 17 00:00:00 2001 From: Herbert Xu Date: Thu, 13 Nov 2014 13:10:48 +0800 Subject: [PATCH 333/371] lib: rhashtable - Remove weird non-ASCII characters from comments My editor spewed garbage that looked like memory corruption on my screen. It turns out that a number of occurences of "fi" got turned into a ligature. This patch replaces these ligatures with the ASCII letters "fi". Signed-off-by: Herbert Xu Cheers, Acked-by: Thomas Graf Signed-off-by: David S. Miller --- lib/rhashtable.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/lib/rhashtable.c b/lib/rhashtable.c index 081be3ba9ea8..624a0b7c05ef 100644 --- a/lib/rhashtable.c +++ b/lib/rhashtable.c @@ -230,7 +230,7 @@ int rhashtable_expand(struct rhashtable *ht, gfp_t flags) ht->shift++; /* For each new bucket, search the corresponding old bucket - * for the first entry that hashes to the new bucket, and + * for the first entry that hashes to the new bucket, and * link the new bucket to that entry. Since all the entries * which will end up in the new bucket appear in the same * old bucket, this constructs an entirely valid new hash @@ -248,8 +248,8 @@ int rhashtable_expand(struct rhashtable *ht, gfp_t flags) } /* Publish the new table pointer. Lookups may now traverse - * the new table, but they will not benefit from any - * additional efficiency until later steps unzip the buckets. + * the new table, but they will not benefit from any + * additional efficiency until later steps unzip the buckets. */ rcu_assign_pointer(ht->tbl, new_tbl); @@ -306,14 +306,14 @@ int rhashtable_shrink(struct rhashtable *ht, gfp_t flags) ht->shift--; - /* Link each bucket in the new table to the first bucket + /* Link each bucket in the new table to the first bucket * in the old table that contains entries which will hash * to the new bucket. */ for (i = 0; i < ntbl->size; i++) { ntbl->buckets[i] = tbl->buckets[i]; - /* Link each bucket in the new table to the first bucket + /* Link each bucket in the new table to the first bucket * in the old table that contains entries which will hash * to the new bucket. */ From ccf899a27c08038db91765ff12bb0380dcd85887 Mon Sep 17 00:00:00 2001 From: Enric Balletbo i Serra Date: Thu, 13 Nov 2014 09:14:34 +0100 Subject: [PATCH 334/371] smsc911x: power-up phydev before doing a software reset. With commit be9dad1f9f26604fb ("net: phy: suspend phydev when going to HALTED"), the PHY device will be put in a low-power mode using BMCR_PDOWN if the the interface is set down. The smsc911x driver does a software_reset opening the device driver (ndo_open). In such case, the PHY must be powered-up before access to any register and before calling the software_reset function. Otherwise, as the PHY is powered down the software reset fails and the interface can not be enabled again. This patch fixes this scenario that is easy to reproduce setting down the network interface and setting up again. $ ifconfig eth0 down $ ifconfig eth0 up ifconfig: SIOCSIFFLAGS: Input/output error Signed-off-by: Enric Balletbo i Serra Signed-off-by: David S. Miller --- drivers/net/ethernet/smsc/smsc911x.c | 46 ++++++++++++++++++++++++++++ 1 file changed, 46 insertions(+) diff --git a/drivers/net/ethernet/smsc/smsc911x.c b/drivers/net/ethernet/smsc/smsc911x.c index c3bf17f89b05..77ed74561e5f 100644 --- a/drivers/net/ethernet/smsc/smsc911x.c +++ b/drivers/net/ethernet/smsc/smsc911x.c @@ -1342,6 +1342,42 @@ static void smsc911x_rx_multicast_update_workaround(struct smsc911x_data *pdata) spin_unlock(&pdata->mac_lock); } +static int smsc911x_phy_general_power_up(struct smsc911x_data *pdata) +{ + int rc = 0; + + if (!pdata->phy_dev) + return rc; + + /* If the internal PHY is in General Power-Down mode, all, except the + * management interface, is powered-down and stays in that condition as + * long as Phy register bit 0.11 is HIGH. + * + * In that case, clear the bit 0.11, so the PHY powers up and we can + * access to the phy registers. + */ + rc = phy_read(pdata->phy_dev, MII_BMCR); + if (rc < 0) { + SMSC_WARN(pdata, drv, "Failed reading PHY control reg"); + return rc; + } + + /* If the PHY general power-down bit is not set is not necessary to + * disable the general power down-mode. + */ + if (rc & BMCR_PDOWN) { + rc = phy_write(pdata->phy_dev, MII_BMCR, rc & ~BMCR_PDOWN); + if (rc < 0) { + SMSC_WARN(pdata, drv, "Failed writing PHY control reg"); + return rc; + } + + usleep_range(1000, 1500); + } + + return 0; +} + static int smsc911x_phy_disable_energy_detect(struct smsc911x_data *pdata) { int rc = 0; @@ -1407,6 +1443,16 @@ static int smsc911x_soft_reset(struct smsc911x_data *pdata) unsigned int temp; int ret; + /* + * Make sure to power-up the PHY chip before doing a reset, otherwise + * the reset fails. + */ + ret = smsc911x_phy_general_power_up(pdata); + if (ret) { + SMSC_WARN(pdata, drv, "Failed to power-up the PHY chip"); + return ret; + } + /* * LAN9210/LAN9211/LAN9220/LAN9221 chips have an internal PHY that * are initialized in a Energy Detect Power-Down mode that prevents From 19ca9fc1445b76b60d34148f7ff837b055f5dcf3 Mon Sep 17 00:00:00 2001 From: Marcelo Leitner Date: Thu, 13 Nov 2014 14:43:08 -0200 Subject: [PATCH 335/371] vxlan: Do not reuse sockets for a different address family Currently, we only match against local port number in order to reuse socket. But if this new vxlan wants an IPv6 socket and a IPv4 one bound to that port, vxlan will reuse an IPv4 socket as IPv6 and a panic will follow. The following steps reproduce it: # ip link add vxlan6 type vxlan id 42 group 229.10.10.10 \ srcport 5000 6000 dev eth0 # ip link add vxlan7 type vxlan id 43 group ff0e::110 \ srcport 5000 6000 dev eth0 # ip link set vxlan6 up # ip link set vxlan7 up [ 4.187481] BUG: unable to handle kernel NULL pointer dereference at 0000000000000058 ... [ 4.188076] Call Trace: [ 4.188085] [] ? ipv6_sock_mc_join+0x3a/0x630 [ 4.188098] [] vxlan_igmp_join+0x66/0xd0 [vxlan] [ 4.188113] [] process_one_work+0x220/0x710 [ 4.188125] [] ? process_one_work+0x1b4/0x710 [ 4.188138] [] worker_thread+0x11b/0x3a0 [ 4.188149] [] ? process_one_work+0x710/0x710 So address family must also match in order to reuse a socket. Reported-by: Jean-Tsung Hsiao Signed-off-by: Marcelo Ricardo Leitner Signed-off-by: David S. Miller --- drivers/net/vxlan.c | 29 +++++++++++++++++++---------- 1 file changed, 19 insertions(+), 10 deletions(-) diff --git a/drivers/net/vxlan.c b/drivers/net/vxlan.c index cfb892b265e8..fa9dc45b75a6 100644 --- a/drivers/net/vxlan.c +++ b/drivers/net/vxlan.c @@ -275,13 +275,15 @@ static inline struct vxlan_rdst *first_remote_rtnl(struct vxlan_fdb *fdb) return list_first_entry(&fdb->remotes, struct vxlan_rdst, list); } -/* Find VXLAN socket based on network namespace and UDP port */ -static struct vxlan_sock *vxlan_find_sock(struct net *net, __be16 port) +/* Find VXLAN socket based on network namespace, address family and UDP port */ +static struct vxlan_sock *vxlan_find_sock(struct net *net, + sa_family_t family, __be16 port) { struct vxlan_sock *vs; hlist_for_each_entry_rcu(vs, vs_head(net, port), hlist) { - if (inet_sk(vs->sock->sk)->inet_sport == port) + if (inet_sk(vs->sock->sk)->inet_sport == port && + inet_sk(vs->sock->sk)->sk.sk_family == family) return vs; } return NULL; @@ -300,11 +302,12 @@ static struct vxlan_dev *vxlan_vs_find_vni(struct vxlan_sock *vs, u32 id) } /* Look up VNI in a per net namespace table */ -static struct vxlan_dev *vxlan_find_vni(struct net *net, u32 id, __be16 port) +static struct vxlan_dev *vxlan_find_vni(struct net *net, u32 id, + sa_family_t family, __be16 port) { struct vxlan_sock *vs; - vs = vxlan_find_sock(net, port); + vs = vxlan_find_sock(net, family, port); if (!vs) return NULL; @@ -1773,7 +1776,8 @@ static void vxlan_xmit_one(struct sk_buff *skb, struct net_device *dev, struct vxlan_dev *dst_vxlan; ip_rt_put(rt); - dst_vxlan = vxlan_find_vni(vxlan->net, vni, dst_port); + dst_vxlan = vxlan_find_vni(vxlan->net, vni, + dst->sa.sa_family, dst_port); if (!dst_vxlan) goto tx_error; vxlan_encap_bypass(skb, vxlan, dst_vxlan); @@ -1827,7 +1831,8 @@ static void vxlan_xmit_one(struct sk_buff *skb, struct net_device *dev, struct vxlan_dev *dst_vxlan; dst_release(ndst); - dst_vxlan = vxlan_find_vni(vxlan->net, vni, dst_port); + dst_vxlan = vxlan_find_vni(vxlan->net, vni, + dst->sa.sa_family, dst_port); if (!dst_vxlan) goto tx_error; vxlan_encap_bypass(skb, vxlan, dst_vxlan); @@ -1987,13 +1992,15 @@ static int vxlan_init(struct net_device *dev) struct vxlan_dev *vxlan = netdev_priv(dev); struct vxlan_net *vn = net_generic(vxlan->net, vxlan_net_id); struct vxlan_sock *vs; + bool ipv6 = vxlan->flags & VXLAN_F_IPV6; dev->tstats = netdev_alloc_pcpu_stats(struct pcpu_sw_netstats); if (!dev->tstats) return -ENOMEM; spin_lock(&vn->sock_lock); - vs = vxlan_find_sock(vxlan->net, vxlan->dst_port); + vs = vxlan_find_sock(vxlan->net, ipv6 ? AF_INET6 : AF_INET, + vxlan->dst_port); if (vs) { /* If we have a socket with same port already, reuse it */ atomic_inc(&vs->refcnt); @@ -2384,6 +2391,7 @@ struct vxlan_sock *vxlan_sock_add(struct net *net, __be16 port, { struct vxlan_net *vn = net_generic(net, vxlan_net_id); struct vxlan_sock *vs; + bool ipv6 = flags & VXLAN_F_IPV6; vs = vxlan_socket_create(net, port, rcv, data, flags); if (!IS_ERR(vs)) @@ -2393,7 +2401,7 @@ struct vxlan_sock *vxlan_sock_add(struct net *net, __be16 port, return vs; spin_lock(&vn->sock_lock); - vs = vxlan_find_sock(net, port); + vs = vxlan_find_sock(net, ipv6 ? AF_INET6 : AF_INET, port); if (vs) { if (vs->rcv == rcv) atomic_inc(&vs->refcnt); @@ -2552,7 +2560,8 @@ static int vxlan_newlink(struct net *net, struct net_device *dev, nla_get_u8(data[IFLA_VXLAN_UDP_ZERO_CSUM6_RX])) vxlan->flags |= VXLAN_F_UDP_ZERO_CSUM6_RX; - if (vxlan_find_vni(net, vni, vxlan->dst_port)) { + if (vxlan_find_vni(net, vni, use_ipv6 ? AF_INET6 : AF_INET, + vxlan->dst_port)) { pr_info("duplicate VNI %u\n", vni); return -EEXIST; } From 238962ac71910d6c20162ea5230685fead1836a4 Mon Sep 17 00:00:00 2001 From: Will Deacon Date: Tue, 4 Nov 2014 11:40:46 +0100 Subject: [PATCH 336/371] ARM: 8191/1: decompressor: ensure I-side picks up relocated code To speed up decompression, the decompressor sets up a flat, cacheable mapping of memory. However, when there is insufficient space to hold the page tables for this mapping, we don't bother to enable the caches and subsequently skip all the cache maintenance hooks. Skipping the cache maintenance before jumping to the relocated code allows the processor to predict the branch and populate the I-cache with stale data before the relocation loop has completed (since a bootloader may have SCTLR.I set, which permits normal, cacheable instruction fetches regardless of SCTLR.M). This patch moves the cache maintenance check into the maintenance routines themselves, allowing the v6/v7 versions to invalidate the I-cache regardless of the MMU state. Cc: Reported-by: Marc Carino Tested-by: Julien Grall Signed-off-by: Will Deacon Signed-off-by: Russell King --- arch/arm/boot/compressed/head.S | 20 ++++++++++++++++---- 1 file changed, 16 insertions(+), 4 deletions(-) diff --git a/arch/arm/boot/compressed/head.S b/arch/arm/boot/compressed/head.S index 413fd94b5301..68be9017593d 100644 --- a/arch/arm/boot/compressed/head.S +++ b/arch/arm/boot/compressed/head.S @@ -397,8 +397,7 @@ dtb_check_done: add sp, sp, r6 #endif - tst r4, #1 - bleq cache_clean_flush + bl cache_clean_flush adr r0, BSYM(restart) add r0, r0, r6 @@ -1047,6 +1046,8 @@ cache_clean_flush: b call_cache_fn __armv4_mpu_cache_flush: + tst r4, #1 + movne pc, lr mov r2, #1 mov r3, #0 mcr p15, 0, ip, c7, c6, 0 @ invalidate D cache @@ -1064,6 +1065,8 @@ __armv4_mpu_cache_flush: mov pc, lr __fa526_cache_flush: + tst r4, #1 + movne pc, lr mov r1, #0 mcr p15, 0, r1, c7, c14, 0 @ clean and invalidate D cache mcr p15, 0, r1, c7, c5, 0 @ flush I cache @@ -1072,13 +1075,16 @@ __fa526_cache_flush: __armv6_mmu_cache_flush: mov r1, #0 - mcr p15, 0, r1, c7, c14, 0 @ clean+invalidate D + tst r4, #1 + mcreq p15, 0, r1, c7, c14, 0 @ clean+invalidate D mcr p15, 0, r1, c7, c5, 0 @ invalidate I+BTB - mcr p15, 0, r1, c7, c15, 0 @ clean+invalidate unified + mcreq p15, 0, r1, c7, c15, 0 @ clean+invalidate unified mcr p15, 0, r1, c7, c10, 4 @ drain WB mov pc, lr __armv7_mmu_cache_flush: + tst r4, #1 + bne iflush mrc p15, 0, r10, c0, c1, 5 @ read ID_MMFR1 tst r10, #0xf << 16 @ hierarchical cache (ARMv7) mov r10, #0 @@ -1139,6 +1145,8 @@ iflush: mov pc, lr __armv5tej_mmu_cache_flush: + tst r4, #1 + movne pc, lr 1: mrc p15, 0, r15, c7, c14, 3 @ test,clean,invalidate D cache bne 1b mcr p15, 0, r0, c7, c5, 0 @ flush I cache @@ -1146,6 +1154,8 @@ __armv5tej_mmu_cache_flush: mov pc, lr __armv4_mmu_cache_flush: + tst r4, #1 + movne pc, lr mov r2, #64*1024 @ default: 32K dcache size (*2) mov r11, #32 @ default: 32 byte line size mrc p15, 0, r3, c0, c0, 1 @ read cache type @@ -1179,6 +1189,8 @@ no_cache_id: __armv3_mmu_cache_flush: __armv3_mpu_cache_flush: + tst r4, #1 + movne pc, lr mov r1, #0 mcr p15, 0, r1, c7, c0, 0 @ invalidate whole cache v3 mov pc, lr From 08b964ff3c51b10aaf2e6ba639f40054c09f0f7a Mon Sep 17 00:00:00 2001 From: Nathan Lynch Date: Mon, 10 Nov 2014 23:46:27 +0100 Subject: [PATCH 337/371] ARM: 8198/1: make kuser helpers depend on MMU MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The kuser helpers page is not set up on non-MMU systems, so it does not make sense to allow CONFIG_KUSER_HELPERS to be enabled when CONFIG_MMU=n. Allowing it to be set on !MMU results in an oops in set_tls (used in execve and the arm_syscall trap handler): Unhandled exception: IPSR = 00000005 LR = fffffff1 CPU: 0 PID: 1 Comm: swapper Not tainted 3.18.0-rc1-00041-ga30465a #216 task: 8b838000 ti: 8b82a000 task.ti: 8b82a000 PC is at flush_thread+0x32/0x40 LR is at flush_thread+0x21/0x40 pc : [<8f00157a>] lr : [<8f001569>] psr: 4100000b sp : 8b82be20 ip : 00000000 fp : 8b83c000 r10: 00000001 r9 : 88018c84 r8 : 8bb85000 r7 : 8b838000 r6 : 00000000 r5 : 8bb77400 r4 : 8b82a000 r3 : ffff0ff0 r2 : 8b82a000 r1 : 00000000 r0 : 88020354 xPSR: 4100000b CPU: 0 PID: 1 Comm: swapper Not tainted 3.18.0-rc1-00041-ga30465a #216 [<8f002bc1>] (unwind_backtrace) from [<8f002033>] (show_stack+0xb/0xc) [<8f002033>] (show_stack) from [<8f00265b>] (__invalid_entry+0x4b/0x4c) As best I can tell this issue existed for the set_tls ARM syscall before commit fbfb872f5f41 "ARM: 8148/1: flush TLS and thumbee register state during exec" consolidated the TLS manipulation code into the set_tls helper function, but now that we're using it to flush register state during execve, !MMU users encounter the oops at the first exec. Prevent CONFIG_MMU=n configurations from enabling CONFIG_KUSER_HELPERS. Fixes: fbfb872f5f41 (ARM: 8148/1: flush TLS and thumbee register state during exec) Signed-off-by: Nathan Lynch Reported-by: Stefan Agner Acked-by: Uwe Kleine-König Cc: stable@vger.kernel.org Signed-off-by: Russell King --- arch/arm/mm/Kconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm/mm/Kconfig b/arch/arm/mm/Kconfig index ae69809a9e47..7eb94e6fc376 100644 --- a/arch/arm/mm/Kconfig +++ b/arch/arm/mm/Kconfig @@ -798,6 +798,7 @@ config NEED_KUSER_HELPERS config KUSER_HELPERS bool "Enable kuser helpers in vector page" if !NEED_KUSER_HELPERS + depends on MMU default y help Warning: disabling this option may break user programs. From c406515239376fc93a30d5d03192182160cbd3fb Mon Sep 17 00:00:00 2001 From: Weijie Yang Date: Thu, 13 Nov 2014 15:19:05 -0800 Subject: [PATCH 338/371] zram: avoid kunmap_atomic() of a NULL pointer zram could kunmap_atomic() a NULL pointer in a rare situation: a zram page becomes a full-zeroed page after a partial write io. The current code doesn't handle this case and performs kunmap_atomic() on a NULL pointer, which panics the kernel. This patch fixes this issue. Signed-off-by: Weijie Yang Cc: Sergey Senozhatsky Cc: Dan Streetman Cc: Nitin Gupta Cc: Weijie Yang Acked-by: Jerome Marchand Cc: Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/block/zram/zram_drv.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/block/zram/zram_drv.c b/drivers/block/zram/zram_drv.c index 2ad0b5bce44b..3920ee45aa59 100644 --- a/drivers/block/zram/zram_drv.c +++ b/drivers/block/zram/zram_drv.c @@ -560,7 +560,8 @@ static int zram_bvec_write(struct zram *zram, struct bio_vec *bvec, u32 index, } if (page_zero_filled(uncmem)) { - kunmap_atomic(user_mem); + if (user_mem) + kunmap_atomic(user_mem); /* Free memory associated with this sector now. */ bit_spin_lock(ZRAM_ACCESS, &meta->table[index].value); zram_free_page(zram, index); From 58420016303769f74c58248a59ca0f435041b352 Mon Sep 17 00:00:00 2001 From: Joonsoo Kim Date: Thu, 13 Nov 2014 15:19:07 -0800 Subject: [PATCH 339/371] mm/compaction: skip the range until proper target pageblock is met Commit 7d49d8868336 ("mm, compaction: reduce zone checking frequency in the migration scanner") has a side-effect that changes the iteration range calculation. Before the change, block_end_pfn is calculated using start_pfn, but now it blindly adds pageblock_nr_pages to the previous value. This causes the problem that isolation_start_pfn is larger than block_end_pfn when we isolate the page with more than pageblock order. In this case, isolation would fail due to an invalid range parameter. To prevent this, this patch implements skipping the range until a proper target pageblock is met. Without this patch, CMA with more than pageblock order always fails but with this patch it will succeed. Signed-off-by: Joonsoo Kim Cc: Vlastimil Babka Cc: Minchan Kim Cc: Michal Nazarewicz Cc: Naoya Horiguchi Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- mm/compaction.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/mm/compaction.c b/mm/compaction.c index ec74cf0123ef..4f0151cfd238 100644 --- a/mm/compaction.c +++ b/mm/compaction.c @@ -479,6 +479,16 @@ isolate_freepages_range(struct compact_control *cc, block_end_pfn = min(block_end_pfn, end_pfn); + /* + * pfn could pass the block_end_pfn if isolated freepage + * is more than pageblock order. In this case, we adjust + * scanning range to right one. + */ + if (pfn >= block_end_pfn) { + block_end_pfn = ALIGN(pfn + 1, pageblock_nr_pages); + block_end_pfn = min(block_end_pfn, end_pfn); + } + if (!pageblock_pfn_to_page(pfn, block_end_pfn, cc->zone)) break; From ad53f92eb416d81e469fa8ea57153e59455e7175 Mon Sep 17 00:00:00 2001 From: Joonsoo Kim Date: Thu, 13 Nov 2014 15:19:11 -0800 Subject: [PATCH 340/371] mm/page_alloc: fix incorrect isolation behavior by rechecking migratetype Before describing bugs itself, I first explain definition of freepage. 1. pages on buddy list are counted as freepage. 2. pages on isolate migratetype buddy list are *not* counted as freepage. 3. pages on cma buddy list are counted as CMA freepage, too. Now, I describe problems and related patch. Patch 1: There is race conditions on getting pageblock migratetype that it results in misplacement of freepages on buddy list, incorrect freepage count and un-availability of freepage. Patch 2: Freepages on pcp list could have stale cached information to determine migratetype of buddy list to go. This causes misplacement of freepages on buddy list and incorrect freepage count. Patch 4: Merging between freepages on different migratetype of pageblocks will cause freepages accouting problem. This patch fixes it. Without patchset [3], above problem doesn't happens on my CMA allocation test, because CMA reserved pages aren't used at all. So there is no chance for above race. With patchset [3], I did simple CMA allocation test and get below result: - Virtual machine, 4 cpus, 1024 MB memory, 256 MB CMA reservation - run kernel build (make -j16) on background - 30 times CMA allocation(8MB * 30 = 240MB) attempts in 5 sec interval - Result: more than 5000 freepage count are missed With patchset [3] and this patchset, I found that no freepage count are missed so that I conclude that problems are solved. On my simple memory offlining test, these problems also occur on that environment, too. This patch (of 4): There are two paths to reach core free function of buddy allocator, __free_one_page(), one is free_one_page()->__free_one_page() and the other is free_hot_cold_page()->free_pcppages_bulk()->__free_one_page(). Each paths has race condition causing serious problems. At first, this patch is focused on first type of freepath. And then, following patch will solve the problem in second type of freepath. In the first type of freepath, we got migratetype of freeing page without holding the zone lock, so it could be racy. There are two cases of this race. 1. pages are added to isolate buddy list after restoring orignal migratetype CPU1 CPU2 get migratetype => return MIGRATE_ISOLATE call free_one_page() with MIGRATE_ISOLATE grab the zone lock unisolate pageblock release the zone lock grab the zone lock call __free_one_page() with MIGRATE_ISOLATE freepage go into isolate buddy list, although pageblock is already unisolated This may cause two problems. One is that we can't use this page anymore until next isolation attempt of this pageblock, because freepage is on isolate buddy list. The other is that freepage accouting could be wrong due to merging between different buddy list. Freepages on isolate buddy list aren't counted as freepage, but ones on normal buddy list are counted as freepage. If merge happens, buddy freepage on normal buddy list is inevitably moved to isolate buddy list without any consideration of freepage accouting so it could be incorrect. 2. pages are added to normal buddy list while pageblock is isolated. It is similar with above case. This also may cause two problems. One is that we can't keep these freepages from being allocated. Although this pageblock is isolated, freepage would be added to normal buddy list so that it could be allocated without any restriction. And the other problem is same as case 1, that it, incorrect freepage accouting. This race condition would be prevented by checking migratetype again with holding the zone lock. Because it is somewhat heavy operation and it isn't needed in common case, we want to avoid rechecking as much as possible. So this patch introduce new variable, nr_isolate_pageblock in struct zone to check if there is isolated pageblock. With this, we can avoid to re-check migratetype in common case and do it only if there is isolated pageblock or migratetype is MIGRATE_ISOLATE. This solve above mentioned problems. Changes from v3: Add one more check in free_one_page() that checks whether migratetype is MIGRATE_ISOLATE or not. Without this, abovementioned case 1 could happens. Signed-off-by: Joonsoo Kim Acked-by: Minchan Kim Acked-by: Michal Nazarewicz Acked-by: Vlastimil Babka Cc: "Kirill A. Shutemov" Cc: Mel Gorman Cc: Johannes Weiner Cc: Yasuaki Ishimatsu Cc: Zhang Yanfei Cc: Tang Chen Cc: Naoya Horiguchi Cc: Bartlomiej Zolnierkiewicz Cc: Wen Congyang Cc: Marek Szyprowski Cc: Laura Abbott Cc: Heesub Shin Cc: "Aneesh Kumar K.V" Cc: Ritesh Harjani Cc: Gioh Kim Cc: Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/mmzone.h | 9 +++++++++ include/linux/page-isolation.h | 8 ++++++++ mm/page_alloc.c | 11 +++++++++-- mm/page_isolation.c | 2 ++ 4 files changed, 28 insertions(+), 2 deletions(-) diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h index 48bf12ef6620..ffe66e381c04 100644 --- a/include/linux/mmzone.h +++ b/include/linux/mmzone.h @@ -431,6 +431,15 @@ struct zone { */ int nr_migrate_reserve_block; +#ifdef CONFIG_MEMORY_ISOLATION + /* + * Number of isolated pageblock. It is used to solve incorrect + * freepage counting problem due to racy retrieving migratetype + * of pageblock. Protected by zone->lock. + */ + unsigned long nr_isolate_pageblock; +#endif + #ifdef CONFIG_MEMORY_HOTPLUG /* see spanned/present_pages for more description */ seqlock_t span_seqlock; diff --git a/include/linux/page-isolation.h b/include/linux/page-isolation.h index 3fff8e774067..2dc1e1697b45 100644 --- a/include/linux/page-isolation.h +++ b/include/linux/page-isolation.h @@ -2,6 +2,10 @@ #define __LINUX_PAGEISOLATION_H #ifdef CONFIG_MEMORY_ISOLATION +static inline bool has_isolate_pageblock(struct zone *zone) +{ + return zone->nr_isolate_pageblock; +} static inline bool is_migrate_isolate_page(struct page *page) { return get_pageblock_migratetype(page) == MIGRATE_ISOLATE; @@ -11,6 +15,10 @@ static inline bool is_migrate_isolate(int migratetype) return migratetype == MIGRATE_ISOLATE; } #else +static inline bool has_isolate_pageblock(struct zone *zone) +{ + return false; +} static inline bool is_migrate_isolate_page(struct page *page) { return false; diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 9cd36b822444..df1da25b309b 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -739,9 +739,16 @@ static void free_one_page(struct zone *zone, if (nr_scanned) __mod_zone_page_state(zone, NR_PAGES_SCANNED, -nr_scanned); + if (unlikely(has_isolate_pageblock(zone) || + is_migrate_isolate(migratetype))) { + migratetype = get_pfnblock_migratetype(page, pfn); + if (is_migrate_isolate(migratetype)) + goto skip_counting; + } + __mod_zone_freepage_state(zone, 1 << order, migratetype); + +skip_counting: __free_one_page(page, pfn, zone, order, migratetype); - if (unlikely(!is_migrate_isolate(migratetype))) - __mod_zone_freepage_state(zone, 1 << order, migratetype); spin_unlock(&zone->lock); } diff --git a/mm/page_isolation.c b/mm/page_isolation.c index d1473b2e9481..1fa4a4d72ecc 100644 --- a/mm/page_isolation.c +++ b/mm/page_isolation.c @@ -60,6 +60,7 @@ out: int migratetype = get_pageblock_migratetype(page); set_pageblock_migratetype(page, MIGRATE_ISOLATE); + zone->nr_isolate_pageblock++; nr_pages = move_freepages_block(zone, page, MIGRATE_ISOLATE); __mod_zone_freepage_state(zone, -nr_pages, migratetype); @@ -83,6 +84,7 @@ void unset_migratetype_isolate(struct page *page, unsigned migratetype) nr_pages = move_freepages_block(zone, page, migratetype); __mod_zone_freepage_state(zone, nr_pages, migratetype); set_pageblock_migratetype(page, migratetype); + zone->nr_isolate_pageblock--; out: spin_unlock_irqrestore(&zone->lock, flags); } From 51bb1a4093cc68bc16b282548d9cee6104be0ef1 Mon Sep 17 00:00:00 2001 From: Joonsoo Kim Date: Thu, 13 Nov 2014 15:19:14 -0800 Subject: [PATCH 341/371] mm/page_alloc: add freepage on isolate pageblock to correct buddy list In free_pcppages_bulk(), we use cached migratetype of freepage to determine type of buddy list where freepage will be added. This information is stored when freepage is added to pcp list, so if isolation of pageblock of this freepage begins after storing, this cached information could be stale. In other words, it has original migratetype rather than MIGRATE_ISOLATE. There are two problems caused by this stale information. One is that we can't keep these freepages from being allocated. Although this pageblock is isolated, freepage will be added to normal buddy list so that it could be allocated without any restriction. And the other problem is incorrect freepage accounting. Freepages on isolate pageblock should not be counted for number of freepage. Following is the code snippet in free_pcppages_bulk(). /* MIGRATE_MOVABLE list may include MIGRATE_RESERVEs */ __free_one_page(page, page_to_pfn(page), zone, 0, mt); trace_mm_page_pcpu_drain(page, 0, mt); if (likely(!is_migrate_isolate_page(page))) { __mod_zone_page_state(zone, NR_FREE_PAGES, 1); if (is_migrate_cma(mt)) __mod_zone_page_state(zone, NR_FREE_CMA_PAGES, 1); } As you can see above snippet, current code already handle second problem, incorrect freepage accounting, by re-fetching pageblock migratetype through is_migrate_isolate_page(page). But, because this re-fetched information isn't used for __free_one_page(), first problem would not be solved. This patch try to solve this situation to re-fetch pageblock migratetype before __free_one_page() and to use it for __free_one_page(). In addition to move up position of this re-fetch, this patch use optimization technique, re-fetching migratetype only if there is isolate pageblock. Pageblock isolation is rare event, so we can avoid re-fetching in common case with this optimization. This patch also correct migratetype of the tracepoint output. Signed-off-by: Joonsoo Kim Acked-by: Minchan Kim Acked-by: Michal Nazarewicz Acked-by: Vlastimil Babka Cc: "Kirill A. Shutemov" Cc: Mel Gorman Cc: Johannes Weiner Cc: Yasuaki Ishimatsu Cc: Zhang Yanfei Cc: Tang Chen Cc: Naoya Horiguchi Cc: Bartlomiej Zolnierkiewicz Cc: Wen Congyang Cc: Marek Szyprowski Cc: Laura Abbott Cc: Heesub Shin Cc: "Aneesh Kumar K.V" Cc: Ritesh Harjani Cc: Gioh Kim Cc: Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- mm/page_alloc.c | 13 ++++++++----- 1 file changed, 8 insertions(+), 5 deletions(-) diff --git a/mm/page_alloc.c b/mm/page_alloc.c index df1da25b309b..58923bea0d8b 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -715,14 +715,17 @@ static void free_pcppages_bulk(struct zone *zone, int count, /* must delete as __free_one_page list manipulates */ list_del(&page->lru); mt = get_freepage_migratetype(page); + if (unlikely(has_isolate_pageblock(zone))) { + mt = get_pageblock_migratetype(page); + if (is_migrate_isolate(mt)) + goto skip_counting; + } + __mod_zone_freepage_state(zone, 1, mt); + +skip_counting: /* MIGRATE_MOVABLE list may include MIGRATE_RESERVEs */ __free_one_page(page, page_to_pfn(page), zone, 0, mt); trace_mm_page_pcpu_drain(page, 0, mt); - if (likely(!is_migrate_isolate_page(page))) { - __mod_zone_page_state(zone, NR_FREE_PAGES, 1); - if (is_migrate_cma(mt)) - __mod_zone_page_state(zone, NR_FREE_CMA_PAGES, 1); - } } while (--to_free && --batch_free && !list_empty(list)); } spin_unlock(&zone->lock); From 8f82b55dd558a74fc33d69a1f2c2605d0cd2c908 Mon Sep 17 00:00:00 2001 From: Joonsoo Kim Date: Thu, 13 Nov 2014 15:19:18 -0800 Subject: [PATCH 342/371] mm/page_alloc: move freepage counting logic to __free_one_page() All the caller of __free_one_page() has similar freepage counting logic, so we can move it to __free_one_page(). This reduce line of code and help future maintenance. This is also preparation step for "mm/page_alloc: restrict max order of merging on isolated pageblock" which fix the freepage counting problem on freepage with more than pageblock order. Signed-off-by: Joonsoo Kim Acked-by: Vlastimil Babka Cc: "Kirill A. Shutemov" Cc: Mel Gorman Cc: Johannes Weiner Cc: Minchan Kim Cc: Yasuaki Ishimatsu Cc: Zhang Yanfei Cc: Tang Chen Cc: Naoya Horiguchi Cc: Bartlomiej Zolnierkiewicz Cc: Wen Congyang Cc: Marek Szyprowski Cc: Michal Nazarewicz Cc: Laura Abbott Cc: Heesub Shin Cc: "Aneesh Kumar K.V" Cc: Ritesh Harjani Cc: Gioh Kim Cc: Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- mm/page_alloc.c | 14 +++----------- 1 file changed, 3 insertions(+), 11 deletions(-) diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 58923bea0d8b..9f689f16b5aa 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -577,6 +577,8 @@ static inline void __free_one_page(struct page *page, return; VM_BUG_ON(migratetype == -1); + if (!is_migrate_isolate(migratetype)) + __mod_zone_freepage_state(zone, 1 << order, migratetype); page_idx = pfn & ((1 << MAX_ORDER) - 1); @@ -715,14 +717,9 @@ static void free_pcppages_bulk(struct zone *zone, int count, /* must delete as __free_one_page list manipulates */ list_del(&page->lru); mt = get_freepage_migratetype(page); - if (unlikely(has_isolate_pageblock(zone))) { + if (unlikely(has_isolate_pageblock(zone))) mt = get_pageblock_migratetype(page); - if (is_migrate_isolate(mt)) - goto skip_counting; - } - __mod_zone_freepage_state(zone, 1, mt); -skip_counting: /* MIGRATE_MOVABLE list may include MIGRATE_RESERVEs */ __free_one_page(page, page_to_pfn(page), zone, 0, mt); trace_mm_page_pcpu_drain(page, 0, mt); @@ -745,12 +742,7 @@ static void free_one_page(struct zone *zone, if (unlikely(has_isolate_pageblock(zone) || is_migrate_isolate(migratetype))) { migratetype = get_pfnblock_migratetype(page, pfn); - if (is_migrate_isolate(migratetype)) - goto skip_counting; } - __mod_zone_freepage_state(zone, 1 << order, migratetype); - -skip_counting: __free_one_page(page, pfn, zone, order, migratetype); spin_unlock(&zone->lock); } From 3c605096d3158216ba9326a16266f6ba128c2c8d Mon Sep 17 00:00:00 2001 From: Joonsoo Kim Date: Thu, 13 Nov 2014 15:19:21 -0800 Subject: [PATCH 343/371] mm/page_alloc: restrict max order of merging on isolated pageblock Current pageblock isolation logic could isolate each pageblock individually. This causes freepage accounting problem if freepage with pageblock order on isolate pageblock is merged with other freepage on normal pageblock. We can prevent merging by restricting max order of merging to pageblock order if freepage is on isolate pageblock. A side-effect of this change is that there could be non-merged buddy freepage even if finishing pageblock isolation, because undoing pageblock isolation is just to move freepage from isolate buddy list to normal buddy list rather than to consider merging. So, the patch also makes undoing pageblock isolation consider freepage merge. When un-isolation, freepage with more than pageblock order and it's buddy are checked. If they are on normal pageblock, instead of just moving, we isolate the freepage and free it in order to get merged. Signed-off-by: Joonsoo Kim Acked-by: Vlastimil Babka Cc: "Kirill A. Shutemov" Cc: Mel Gorman Cc: Johannes Weiner Cc: Minchan Kim Cc: Yasuaki Ishimatsu Cc: Zhang Yanfei Cc: Tang Chen Cc: Naoya Horiguchi Cc: Bartlomiej Zolnierkiewicz Cc: Wen Congyang Cc: Marek Szyprowski Cc: Michal Nazarewicz Cc: Laura Abbott Cc: Heesub Shin Cc: "Aneesh Kumar K.V" Cc: Ritesh Harjani Cc: Gioh Kim Cc: Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- mm/internal.h | 25 +++++++++++++++++++++++++ mm/page_alloc.c | 41 ++++++++++++++--------------------------- mm/page_isolation.c | 41 +++++++++++++++++++++++++++++++++++++++-- 3 files changed, 78 insertions(+), 29 deletions(-) diff --git a/mm/internal.h b/mm/internal.h index 829304090b90..a4f90ba7068e 100644 --- a/mm/internal.h +++ b/mm/internal.h @@ -108,6 +108,31 @@ extern pmd_t *mm_find_pmd(struct mm_struct *mm, unsigned long address); /* * in mm/page_alloc.c */ + +/* + * Locate the struct page for both the matching buddy in our + * pair (buddy1) and the combined O(n+1) page they form (page). + * + * 1) Any buddy B1 will have an order O twin B2 which satisfies + * the following equation: + * B2 = B1 ^ (1 << O) + * For example, if the starting buddy (buddy2) is #8 its order + * 1 buddy is #10: + * B2 = 8 ^ (1 << 1) = 8 ^ 2 = 10 + * + * 2) Any buddy B will have an order O+1 parent P which + * satisfies the following equation: + * P = B & ~(1 << O) + * + * Assumption: *_mem_map is contiguous at least up to MAX_ORDER + */ +static inline unsigned long +__find_buddy_index(unsigned long page_idx, unsigned int order) +{ + return page_idx ^ (1 << order); +} + +extern int __isolate_free_page(struct page *page, unsigned int order); extern void __free_pages_bootmem(struct page *page, unsigned int order); extern void prep_compound_page(struct page *page, unsigned long order); #ifdef CONFIG_MEMORY_FAILURE diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 9f689f16b5aa..fd11b913779e 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -466,29 +466,6 @@ static inline void rmv_page_order(struct page *page) set_page_private(page, 0); } -/* - * Locate the struct page for both the matching buddy in our - * pair (buddy1) and the combined O(n+1) page they form (page). - * - * 1) Any buddy B1 will have an order O twin B2 which satisfies - * the following equation: - * B2 = B1 ^ (1 << O) - * For example, if the starting buddy (buddy2) is #8 its order - * 1 buddy is #10: - * B2 = 8 ^ (1 << 1) = 8 ^ 2 = 10 - * - * 2) Any buddy B will have an order O+1 parent P which - * satisfies the following equation: - * P = B & ~(1 << O) - * - * Assumption: *_mem_map is contiguous at least up to MAX_ORDER - */ -static inline unsigned long -__find_buddy_index(unsigned long page_idx, unsigned int order) -{ - return page_idx ^ (1 << order); -} - /* * This function checks whether a page is free && is the buddy * we can do coalesce a page and its buddy if @@ -569,6 +546,7 @@ static inline void __free_one_page(struct page *page, unsigned long combined_idx; unsigned long uninitialized_var(buddy_idx); struct page *buddy; + int max_order = MAX_ORDER; VM_BUG_ON(!zone_is_initialized(zone)); @@ -577,15 +555,24 @@ static inline void __free_one_page(struct page *page, return; VM_BUG_ON(migratetype == -1); - if (!is_migrate_isolate(migratetype)) + if (is_migrate_isolate(migratetype)) { + /* + * We restrict max order of merging to prevent merge + * between freepages on isolate pageblock and normal + * pageblock. Without this, pageblock isolation + * could cause incorrect freepage accounting. + */ + max_order = min(MAX_ORDER, pageblock_order + 1); + } else { __mod_zone_freepage_state(zone, 1 << order, migratetype); + } - page_idx = pfn & ((1 << MAX_ORDER) - 1); + page_idx = pfn & ((1 << max_order) - 1); VM_BUG_ON_PAGE(page_idx & ((1 << order) - 1), page); VM_BUG_ON_PAGE(bad_range(zone, page), page); - while (order < MAX_ORDER-1) { + while (order < max_order - 1) { buddy_idx = __find_buddy_index(page_idx, order); buddy = page + (buddy_idx - page_idx); if (!page_is_buddy(page, buddy, order)) @@ -1486,7 +1473,7 @@ void split_page(struct page *page, unsigned int order) } EXPORT_SYMBOL_GPL(split_page); -static int __isolate_free_page(struct page *page, unsigned int order) +int __isolate_free_page(struct page *page, unsigned int order) { unsigned long watermark; struct zone *zone; diff --git a/mm/page_isolation.c b/mm/page_isolation.c index 1fa4a4d72ecc..c8778f7e208e 100644 --- a/mm/page_isolation.c +++ b/mm/page_isolation.c @@ -76,17 +76,54 @@ void unset_migratetype_isolate(struct page *page, unsigned migratetype) { struct zone *zone; unsigned long flags, nr_pages; + struct page *isolated_page = NULL; + unsigned int order; + unsigned long page_idx, buddy_idx; + struct page *buddy; zone = page_zone(page); spin_lock_irqsave(&zone->lock, flags); if (get_pageblock_migratetype(page) != MIGRATE_ISOLATE) goto out; - nr_pages = move_freepages_block(zone, page, migratetype); - __mod_zone_freepage_state(zone, nr_pages, migratetype); + + /* + * Because freepage with more than pageblock_order on isolated + * pageblock is restricted to merge due to freepage counting problem, + * it is possible that there is free buddy page. + * move_freepages_block() doesn't care of merge so we need other + * approach in order to merge them. Isolation and free will make + * these pages to be merged. + */ + if (PageBuddy(page)) { + order = page_order(page); + if (order >= pageblock_order) { + page_idx = page_to_pfn(page) & ((1 << MAX_ORDER) - 1); + buddy_idx = __find_buddy_index(page_idx, order); + buddy = page + (buddy_idx - page_idx); + + if (!is_migrate_isolate_page(buddy)) { + __isolate_free_page(page, order); + set_page_refcounted(page); + isolated_page = page; + } + } + } + + /* + * If we isolate freepage with more than pageblock_order, there + * should be no freepage in the range, so we could avoid costly + * pageblock scanning for freepage moving. + */ + if (!isolated_page) { + nr_pages = move_freepages_block(zone, page, migratetype); + __mod_zone_freepage_state(zone, nr_pages, migratetype); + } set_pageblock_migratetype(page, migratetype); zone->nr_isolate_pageblock--; out: spin_unlock_irqrestore(&zone->lock, flags); + if (isolated_page) + __free_pages(isolated_page, order); } static inline struct page * From 95069ac8da4975120ba76e968fc72948582c3509 Mon Sep 17 00:00:00 2001 From: Joonsoo Kim Date: Thu, 13 Nov 2014 15:19:25 -0800 Subject: [PATCH 344/371] mm/slab: fix unalignment problem on Malta with EVA due to slab merge Unlike SLUB, sometimes, object isn't started at the beginning of the slab in SLAB. This causes the unalignment problem after slab merging is supported by commit 12220dea07f1 ("mm/slab: support slab merge"). Following is the report from Markos that fail to boot on Malta with EVA. Calibrating delay loop... 19.86 BogoMIPS (lpj=99328) pid_max: default: 32768 minimum: 301 Mount-cache hash table entries: 4096 (order: 0, 16384 bytes) Mountpoint-cache hash table entries: 4096 (order: 0, 16384 bytes) Kernel bug detected[#1]: CPU: 0 PID: 1 Comm: swapper/0 Not tainted 3.17.0-05639-g12220dea07f1 #1631 task: 1f04f5d8 ti: 1f050000 task.ti: 1f050000 epc : 80141190 alloc_unbound_pwq+0x234/0x304 Not tainted ra : 80141184 alloc_unbound_pwq+0x228/0x304 Process swapper/0 (pid: 1, threadinfo=1f050000, task=1f04f5d8, tls=00000000) Call Trace: alloc_unbound_pwq+0x234/0x304 apply_workqueue_attrs+0x11c/0x294 __alloc_workqueue_key+0x23c/0x470 init_workqueues+0x320/0x400 do_one_initcall+0xe8/0x23c kernel_init_freeable+0x9c/0x224 kernel_init+0x10/0x100 ret_from_kernel_thread+0x14/0x1c [ end trace cb88537fdc8fa200 ] Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000b alloc_unbound_pwq() allocates slab object from pool_workqueue. This kmem_cache requires 256 bytes alignment, but, current merging code doesn't honor that, and merge it with kmalloc-256. kmalloc-256 requires only cacheline size alignment so that above failure occurs. However, in x86, kmalloc-256 is luckily aligned in 256 bytes, so the problem didn't happen on it. To fix this problem, this patch introduces alignment mismatch check in find_mergeable(). This will fix the problem. Signed-off-by: Joonsoo Kim Reported-by: Markos Chandras Tested-by: Markos Chandras Acked-by: Christoph Lameter Cc: Pekka Enberg Cc: David Rientjes Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- mm/slab_common.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/mm/slab_common.c b/mm/slab_common.c index 406944207b61..dcdab81bd240 100644 --- a/mm/slab_common.c +++ b/mm/slab_common.c @@ -259,6 +259,10 @@ struct kmem_cache *find_mergeable(size_t size, size_t align, if (s->size - size >= sizeof(void *)) continue; + if (IS_ENABLED(CONFIG_SLAB) && align && + (align > s->align || s->align % align)) + continue; + return s; } return NULL; From dae803e165a11bc88ca8dbc07a11077caf97bbcb Mon Sep 17 00:00:00 2001 From: Michal Nazarewicz Date: Thu, 13 Nov 2014 15:19:27 -0800 Subject: [PATCH 345/371] mm: alloc_contig_range: demote pages busy message from warn to info Having test_pages_isolated failure message as a warning confuses users into thinking that it is more serious than it really is. In reality, if called via CMA, allocation will be retried so a single test_pages_isolated failure does not prevent allocation from succeeding. Demote the warning message to an info message and reformat it such that the text "failed" does not appear and instead a less worrying "PFNS busy" is used. This message is trivially reproducible on a 10GB x86 machine on 3.16.y kernels configured with CONFIG_DMA_CMA. Signed-off-by: Michal Nazarewicz Cc: Laurent Pinchart Cc: Peter Hurley Cc: Minchan Kim Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- mm/page_alloc.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/mm/page_alloc.c b/mm/page_alloc.c index fd11b913779e..181dc593962b 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -6397,13 +6397,12 @@ int alloc_contig_range(unsigned long start, unsigned long end, /* Make sure the range is really isolated. */ if (test_pages_isolated(outer_start, end, false)) { - pr_warn("alloc_contig_range test_pages_isolated(%lx, %lx) failed\n", - outer_start, end); + pr_info("%s: [%lx, %lx) PFNs busy\n", + __func__, outer_start, end); ret = -EBUSY; goto done; } - /* Grab isolated pages from freelists. */ outer_end = isolate_freepages_range(&cc, outer_start, end); if (!outer_end) { From 1d5bfe1ffb5b9014ea80bcd8a40ae43a3e213120 Mon Sep 17 00:00:00 2001 From: Vlastimil Babka Date: Thu, 13 Nov 2014 15:19:30 -0800 Subject: [PATCH 346/371] mm, compaction: prevent infinite loop in compact_zone Several people have reported occasionally seeing processes stuck in compact_zone(), even triggering soft lockups, in 3.18-rc2+. Testing a revert of commit e14c720efdd7 ("mm, compaction: remember position within pageblock in free pages scanner") fixed the issue, although the stuck processes do not appear to involve the free scanner. Finally, by code inspection, the bug was found in isolate_migratepages() which uses a slightly different condition to detect if the migration and free scanners have met, than compact_finished(). That has not been a problem until commit e14c720efdd7 allowed the free scanner position between individual invocations to be in the middle of a pageblock. In a relatively rare case, the migration scanner position can end up at the beginning of a pageblock, with the free scanner position in the middle of the same pageblock. If it's the migration scanner's turn, isolate_migratepages() exits immediately (without updating the position), while compact_finished() decides to continue compaction, resulting in a potentially infinite loop. The system can recover only if another process creates enough high-order pages to make the watermark checks in compact_finished() pass. This patch fixes the immediate problem by bumping the migration scanner's position to meet the free scanner in isolate_migratepages(), when both are within the same pageblock. This causes compact_finished() to terminate properly. A more robust check in compact_finished() is planned as a cleanup for better future maintainability. Fixes: e14c720efdd73 ("mm, compaction: remember position within pageblock in free pages scanner) Signed-off-by: Vlastimil Babka Reported-by: P. Christeas Tested-by: P. Christeas Link: http://marc.info/?l=linux-mm&m=141508604232522&w=2 Reported-by: Norbert Preining Tested-by: Norbert Preining Link: https://lkml.org/lkml/2014/11/4/904 Reported-by: Pavel Machek Link: https://lkml.org/lkml/2014/11/7/164 Cc: Joonsoo Kim Cc: David Rientjes Cc: Mel Gorman Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- mm/compaction.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/mm/compaction.c b/mm/compaction.c index 4f0151cfd238..f9792ba3537c 100644 --- a/mm/compaction.c +++ b/mm/compaction.c @@ -1039,8 +1039,12 @@ static isolate_migrate_t isolate_migratepages(struct zone *zone, } acct_isolated(zone, cc); - /* Record where migration scanner will be restarted */ - cc->migrate_pfn = low_pfn; + /* + * Record where migration scanner will be restarted. If we end up in + * the same pageblock as the free scanner, make the scanners fully + * meet so that compact_finished() terminates compaction. + */ + cc->migrate_pfn = (end_pfn <= cc->free_pfn) ? low_pfn : cc->free_pfn; return cc->nr_migratepages ? ISOLATE_SUCCESS : ISOLATE_NONE; } From 8edc6e1688fc8f02c8c1f53a2ec4928cb1055f4d Mon Sep 17 00:00:00 2001 From: Jan Kara Date: Thu, 13 Nov 2014 15:19:33 -0800 Subject: [PATCH 347/371] fanotify: fix notification of groups with inode & mount marks fsnotify() needs to merge inode and mount marks lists when notifying groups about events so that ignore masks from inode marks are reflected in mount mark notifications and groups are notified in proper order (according to priorities). Currently the sorting of the lists done by fsnotify_add_inode_mark() / fsnotify_add_vfsmount_mark() and fsnotify() differed which resulted ignore masks not being used in some cases. Fix the problem by always using the same comparison function when sorting / merging the mark lists. Thanks to Heinrich Schuchardt for improvements of my patch. Link: https://bugzilla.kernel.org/show_bug.cgi?id=87721 Signed-off-by: Jan Kara Reported-by: Heinrich Schuchardt Tested-by: Heinrich Schuchardt Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/notify/fsnotify.c | 36 +++++++++++++++++++++--------------- fs/notify/fsnotify.h | 4 ++++ fs/notify/inode_mark.c | 8 +++----- fs/notify/mark.c | 36 ++++++++++++++++++++++++++++++++++++ fs/notify/vfsmount_mark.c | 8 +++----- 5 files changed, 67 insertions(+), 25 deletions(-) diff --git a/fs/notify/fsnotify.c b/fs/notify/fsnotify.c index 9d3e9c50066a..89326acd4561 100644 --- a/fs/notify/fsnotify.c +++ b/fs/notify/fsnotify.c @@ -229,8 +229,16 @@ int fsnotify(struct inode *to_tell, __u32 mask, void *data, int data_is, &fsnotify_mark_srcu); } + /* + * We need to merge inode & vfsmount mark lists so that inode mark + * ignore masks are properly reflected for mount mark notifications. + * That's why this traversal is so complicated... + */ while (inode_node || vfsmount_node) { - inode_group = vfsmount_group = NULL; + inode_group = NULL; + inode_mark = NULL; + vfsmount_group = NULL; + vfsmount_mark = NULL; if (inode_node) { inode_mark = hlist_entry(srcu_dereference(inode_node, &fsnotify_mark_srcu), @@ -244,21 +252,19 @@ int fsnotify(struct inode *to_tell, __u32 mask, void *data, int data_is, vfsmount_group = vfsmount_mark->group; } - if (inode_group > vfsmount_group) { - /* handle inode */ - ret = send_to_group(to_tell, inode_mark, NULL, mask, - data, data_is, cookie, file_name); - /* we didn't use the vfsmount_mark */ - vfsmount_group = NULL; - } else if (vfsmount_group > inode_group) { - ret = send_to_group(to_tell, NULL, vfsmount_mark, mask, - data, data_is, cookie, file_name); - inode_group = NULL; - } else { - ret = send_to_group(to_tell, inode_mark, vfsmount_mark, - mask, data, data_is, cookie, - file_name); + if (inode_group && vfsmount_group) { + int cmp = fsnotify_compare_groups(inode_group, + vfsmount_group); + if (cmp > 0) { + inode_group = NULL; + inode_mark = NULL; + } else if (cmp < 0) { + vfsmount_group = NULL; + vfsmount_mark = NULL; + } } + ret = send_to_group(to_tell, inode_mark, vfsmount_mark, mask, + data, data_is, cookie, file_name); if (ret && (mask & ALL_FSNOTIFY_PERM_EVENTS)) goto out; diff --git a/fs/notify/fsnotify.h b/fs/notify/fsnotify.h index 9c0898c4cfe1..3b68b0ae0a97 100644 --- a/fs/notify/fsnotify.h +++ b/fs/notify/fsnotify.h @@ -12,6 +12,10 @@ extern void fsnotify_flush_notify(struct fsnotify_group *group); /* protects reads of inode and vfsmount marks list */ extern struct srcu_struct fsnotify_mark_srcu; +/* compare two groups for sorting of marks lists */ +extern int fsnotify_compare_groups(struct fsnotify_group *a, + struct fsnotify_group *b); + extern void fsnotify_set_inode_mark_mask_locked(struct fsnotify_mark *fsn_mark, __u32 mask); /* add a mark to an inode */ diff --git a/fs/notify/inode_mark.c b/fs/notify/inode_mark.c index e8497144b323..dfbf5447eea4 100644 --- a/fs/notify/inode_mark.c +++ b/fs/notify/inode_mark.c @@ -194,6 +194,7 @@ int fsnotify_add_inode_mark(struct fsnotify_mark *mark, { struct fsnotify_mark *lmark, *last = NULL; int ret = 0; + int cmp; mark->flags |= FSNOTIFY_MARK_FLAG_INODE; @@ -219,11 +220,8 @@ int fsnotify_add_inode_mark(struct fsnotify_mark *mark, goto out; } - if (mark->group->priority < lmark->group->priority) - continue; - - if ((mark->group->priority == lmark->group->priority) && - (mark->group < lmark->group)) + cmp = fsnotify_compare_groups(lmark->group, mark->group); + if (cmp < 0) continue; hlist_add_before_rcu(&mark->i.i_list, &lmark->i.i_list); diff --git a/fs/notify/mark.c b/fs/notify/mark.c index d90deaa08e78..34c38fabf514 100644 --- a/fs/notify/mark.c +++ b/fs/notify/mark.c @@ -209,6 +209,42 @@ void fsnotify_set_mark_ignored_mask_locked(struct fsnotify_mark *mark, __u32 mas mark->ignored_mask = mask; } +/* + * Sorting function for lists of fsnotify marks. + * + * Fanotify supports different notification classes (reflected as priority of + * notification group). Events shall be passed to notification groups in + * decreasing priority order. To achieve this marks in notification lists for + * inodes and vfsmounts are sorted so that priorities of corresponding groups + * are descending. + * + * Furthermore correct handling of the ignore mask requires processing inode + * and vfsmount marks of each group together. Using the group address as + * further sort criterion provides a unique sorting order and thus we can + * merge inode and vfsmount lists of marks in linear time and find groups + * present in both lists. + * + * A return value of 1 signifies that b has priority over a. + * A return value of 0 signifies that the two marks have to be handled together. + * A return value of -1 signifies that a has priority over b. + */ +int fsnotify_compare_groups(struct fsnotify_group *a, struct fsnotify_group *b) +{ + if (a == b) + return 0; + if (!a) + return 1; + if (!b) + return -1; + if (a->priority < b->priority) + return 1; + if (a->priority > b->priority) + return -1; + if (a < b) + return 1; + return -1; +} + /* * Attach an initialized mark to a given group and fs object. * These marks may be used for the fsnotify backend to determine which diff --git a/fs/notify/vfsmount_mark.c b/fs/notify/vfsmount_mark.c index ac851e8376b1..faefa72a11eb 100644 --- a/fs/notify/vfsmount_mark.c +++ b/fs/notify/vfsmount_mark.c @@ -153,6 +153,7 @@ int fsnotify_add_vfsmount_mark(struct fsnotify_mark *mark, struct mount *m = real_mount(mnt); struct fsnotify_mark *lmark, *last = NULL; int ret = 0; + int cmp; mark->flags |= FSNOTIFY_MARK_FLAG_VFSMOUNT; @@ -178,11 +179,8 @@ int fsnotify_add_vfsmount_mark(struct fsnotify_mark *mark, goto out; } - if (mark->group->priority < lmark->group->priority) - continue; - - if ((mark->group->priority == lmark->group->priority) && - (mark->group < lmark->group)) + cmp = fsnotify_compare_groups(lmark->group, mark->group); + if (cmp < 0) continue; hlist_add_before_rcu(&mark->m.m_list, &lmark->m.m_list); From 57cbc87e03c2f473d8f0579186c078ee06f48f2c Mon Sep 17 00:00:00 2001 From: Joonsoo Kim Date: Thu, 13 Nov 2014 15:19:36 -0800 Subject: [PATCH 348/371] mm/debug-pagealloc: correct freepage accounting and order resetting One thing I did in this patch is fixing freepage accounting. If we clear guard page and link it onto isolate buddy list, we should not increase freepage count. This patch adds conditional branch to skip counting in this case. Without this patch, this overcounting happens frequently if guard order is set and CMA is used. Another thing fixed in this patch is the target to reset order. In __free_one_page(), we check the buddy page whether it is a guard page or not. And, if so, we should clear guard attribute on the buddy page and reset order of it to 0. But, current code resets original page's order rather than buddy one's. Maybe, this doesn't have any problem, because whole merged page's order will be re-assigned soon. But, it is better to correct code. Signed-off-by: Joonsoo Kim Acked-by: Vlastimil Babka Cc: Gioh Kim Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- mm/page_alloc.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 181dc593962b..616a2c956b4b 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -583,9 +583,11 @@ static inline void __free_one_page(struct page *page, */ if (page_is_guard(buddy)) { clear_page_guard_flag(buddy); - set_page_private(page, 0); - __mod_zone_freepage_state(zone, 1 << order, - migratetype); + set_page_private(buddy, 0); + if (!is_migrate_isolate(migratetype)) { + __mod_zone_freepage_state(zone, 1 << order, + migratetype); + } } else { list_del(&buddy->lru); zone->free_area[order].nr_free--; From f784a3f19613901ca4539a5b0eed3bdc700e6ee7 Mon Sep 17 00:00:00 2001 From: Tang Chen Date: Thu, 13 Nov 2014 15:19:39 -0800 Subject: [PATCH 349/371] mem-hotplug: reset node managed pages when hot-adding a new pgdat In free_area_init_core(), zone->managed_pages is set to an approximate value for lowmem, and will be adjusted when the bootmem allocator frees pages into the buddy system. But free_area_init_core() is also called by hotadd_new_pgdat() when hot-adding memory. As a result, zone->managed_pages of the newly added node's pgdat is set to an approximate value in the very beginning. Even if the memory on that node has node been onlined, /sys/device/system/node/nodeXXX/meminfo has wrong value: hot-add node2 (memory not onlined) cat /sys/device/system/node/node2/meminfo Node 2 MemTotal: 33554432 kB Node 2 MemFree: 0 kB Node 2 MemUsed: 33554432 kB Node 2 Active: 0 kB This patch fixes this problem by reset node managed pages to 0 after hot-adding a new node. 1. Move reset_managed_pages_done from reset_node_managed_pages() to reset_all_zones_managed_pages() 2. Make reset_node_managed_pages() non-static 3. Call reset_node_managed_pages() in hotadd_new_pgdat() after pgdat is initialized Signed-off-by: Tang Chen Signed-off-by: Yasuaki Ishimatsu Cc: [3.16+] Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/bootmem.h | 1 + mm/bootmem.c | 9 +++++---- mm/memory_hotplug.c | 9 +++++++++ mm/nobootmem.c | 8 +++++--- 4 files changed, 20 insertions(+), 7 deletions(-) diff --git a/include/linux/bootmem.h b/include/linux/bootmem.h index 4e2bd4c95b66..0995c2de8162 100644 --- a/include/linux/bootmem.h +++ b/include/linux/bootmem.h @@ -46,6 +46,7 @@ extern unsigned long init_bootmem_node(pg_data_t *pgdat, extern unsigned long init_bootmem(unsigned long addr, unsigned long memend); extern unsigned long free_all_bootmem(void); +extern void reset_node_managed_pages(pg_data_t *pgdat); extern void reset_all_zones_managed_pages(void); extern void free_bootmem_node(pg_data_t *pgdat, diff --git a/mm/bootmem.c b/mm/bootmem.c index 8a000cebb0d7..477be696511d 100644 --- a/mm/bootmem.c +++ b/mm/bootmem.c @@ -243,13 +243,10 @@ static unsigned long __init free_all_bootmem_core(bootmem_data_t *bdata) static int reset_managed_pages_done __initdata; -static inline void __init reset_node_managed_pages(pg_data_t *pgdat) +void reset_node_managed_pages(pg_data_t *pgdat) { struct zone *z; - if (reset_managed_pages_done) - return; - for (z = pgdat->node_zones; z < pgdat->node_zones + MAX_NR_ZONES; z++) z->managed_pages = 0; } @@ -258,8 +255,12 @@ void __init reset_all_zones_managed_pages(void) { struct pglist_data *pgdat; + if (reset_managed_pages_done) + return; + for_each_online_pgdat(pgdat) reset_node_managed_pages(pgdat); + reset_managed_pages_done = 1; } diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c index 252e1dbbed86..c5f7fe199a60 100644 --- a/mm/memory_hotplug.c +++ b/mm/memory_hotplug.c @@ -31,6 +31,7 @@ #include #include #include +#include #include @@ -1096,6 +1097,14 @@ static pg_data_t __ref *hotadd_new_pgdat(int nid, u64 start) build_all_zonelists(pgdat, NULL); mutex_unlock(&zonelists_mutex); + /* + * zone->managed_pages is set to an approximate value in + * free_area_init_core(), which will cause + * /sys/device/system/node/nodeX/meminfo has wrong data. + * So reset it to 0 before any memory is onlined. + */ + reset_node_managed_pages(pgdat); + return pgdat; } diff --git a/mm/nobootmem.c b/mm/nobootmem.c index 7c7ab32ee503..90b50468333e 100644 --- a/mm/nobootmem.c +++ b/mm/nobootmem.c @@ -145,12 +145,10 @@ static unsigned long __init free_low_memory_core_early(void) static int reset_managed_pages_done __initdata; -static inline void __init reset_node_managed_pages(pg_data_t *pgdat) +void reset_node_managed_pages(pg_data_t *pgdat) { struct zone *z; - if (reset_managed_pages_done) - return; for (z = pgdat->node_zones; z < pgdat->node_zones + MAX_NR_ZONES; z++) z->managed_pages = 0; } @@ -159,8 +157,12 @@ void __init reset_all_zones_managed_pages(void) { struct pglist_data *pgdat; + if (reset_managed_pages_done) + return; + for_each_online_pgdat(pgdat) reset_node_managed_pages(pgdat); + reset_managed_pages_done = 1; } From 0bd854200873894a76f32603ff2c4c988ad6b5b5 Mon Sep 17 00:00:00 2001 From: Tang Chen Date: Thu, 13 Nov 2014 15:19:41 -0800 Subject: [PATCH 350/371] mem-hotplug: reset node present pages when hot-adding a new pgdat When memory is hot-added, all the memory is in offline state. So clear all zones' present_pages because they will be updated in online_pages() and offline_pages(). Otherwise, /proc/zoneinfo will corrupt: When the memory of node2 is offline: # cat /proc/zoneinfo ...... Node 2, zone Movable ...... spanned 8388608 present 8388608 managed 0 When we online memory on node2: # cat /proc/zoneinfo ...... Node 2, zone Movable ...... spanned 8388608 present 16777216 managed 8388608 Signed-off-by: Tang Chen Reviewed-by: Yasuaki Ishimatsu Cc: [3.16+] Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- mm/memory_hotplug.c | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c index c5f7fe199a60..1bf4807cb21e 100644 --- a/mm/memory_hotplug.c +++ b/mm/memory_hotplug.c @@ -1067,6 +1067,16 @@ out: } #endif /* CONFIG_MEMORY_HOTPLUG_SPARSE */ +static void reset_node_present_pages(pg_data_t *pgdat) +{ + struct zone *z; + + for (z = pgdat->node_zones; z < pgdat->node_zones + MAX_NR_ZONES; z++) + z->present_pages = 0; + + pgdat->node_present_pages = 0; +} + /* we are OK calling __meminit stuff here - we have CONFIG_MEMORY_HOTPLUG */ static pg_data_t __ref *hotadd_new_pgdat(int nid, u64 start) { @@ -1105,6 +1115,13 @@ static pg_data_t __ref *hotadd_new_pgdat(int nid, u64 start) */ reset_node_managed_pages(pgdat); + /* + * When memory is hot-added, all the memory is in offline state. So + * clear all zones' present_pages because they will be updated in + * online_pages() and offline_pages(). + */ + reset_node_present_pages(pgdat); + return pgdat; } From bc53a3f46de8f3b2e28d46106216f3a759be8705 Mon Sep 17 00:00:00 2001 From: Xie XiuQi Date: Thu, 13 Nov 2014 15:19:44 -0800 Subject: [PATCH 351/371] kernel/panic.c: update comments for print_tainted Commit 69361eef9056 ("panic: add TAINT_SOFTLOCKUP") added the 'L' flag, but failed to update the comments for print_tainted(). So, update the comments. Signed-off-by: Xie XiuQi Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- kernel/panic.c | 1 + 1 file changed, 1 insertion(+) diff --git a/kernel/panic.c b/kernel/panic.c index d09dc5c32c67..cf80672b7924 100644 --- a/kernel/panic.c +++ b/kernel/panic.c @@ -244,6 +244,7 @@ static const struct tnt tnts[] = { * 'I' - Working around severe firmware bug. * 'O' - Out-of-tree module has been loaded. * 'E' - Unsigned module has been loaded. + * 'L' - A soft lockup has previously occurred. * * The string is overwritten by the next call to print_tainted(). */ From 8fe671fc0b9f5a0d013153a9ddbd979d6eff0547 Mon Sep 17 00:00:00 2001 From: Daniel Baluta Date: Thu, 13 Nov 2014 15:19:47 -0800 Subject: [PATCH 352/371] MAINTAINERS: add IIO include files Files under include/linux/iio were not reported as part of the IIO subsystem. Signed-off-by: Daniel Baluta Reported-by: Cristina Ciocan Reviewed-by: Jingoo Han Cc: Hartmut Knaack Cc: Lars-Peter Clausen Cc: Peter Meerwald Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- MAINTAINERS | 1 + 1 file changed, 1 insertion(+) diff --git a/MAINTAINERS b/MAINTAINERS index ea4d0058fd1b..60b1163dba28 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -4716,6 +4716,7 @@ L: linux-iio@vger.kernel.org S: Maintained F: drivers/iio/ F: drivers/staging/iio/ +F: include/linux/iio/ IKANOS/ADI EAGLE ADSL USB DRIVER M: Matthieu Castet From a7ef82aee91f26da79b981b9f5bca43b8817d3e4 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Pali=20Roh=C3=A1r?= Date: Sat, 8 Nov 2014 23:36:09 -0800 Subject: [PATCH 353/371] Input: alps - ignore bad data on Dell Latitudes E6440 and E7440 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sometimes on Dell Latitude laptops psmouse/alps driver receive invalid ALPS protocol V3 packets with bit7 set in last byte. More often it can be reproduced on Dell Latitude E6440 or E7440 with closed lid and pushing cover above touchpad. If bit7 in last packet byte is set then it is not valid ALPS packet. I was told that ALPS devices never send these packets. It is not know yet who send those packets, it could be Dell EC, bug in BIOS and also bug in touchpad firmware... With this patch alps driver does not process those invalid packets, but instead of reporting PSMOUSE_BAD_DATA, getting into out of sync state, getting back in sync with the next byte and spam dmesg we return PSMOUSE_FULL_PACKET. If driver is truly out of sync we'll fail the checks on the next byte and report PSMOUSE_BAD_DATA then. Signed-off-by: Pali Rohár Tested-by: Pali Rohár Cc: stable@vger.kernel.org Signed-off-by: Dmitry Torokhov --- drivers/input/mouse/alps.c | 17 ++++++++++++++++- 1 file changed, 16 insertions(+), 1 deletion(-) diff --git a/drivers/input/mouse/alps.c b/drivers/input/mouse/alps.c index 433638e7e4af..d125a019383f 100644 --- a/drivers/input/mouse/alps.c +++ b/drivers/input/mouse/alps.c @@ -1186,12 +1186,27 @@ static psmouse_ret_t alps_process_byte(struct psmouse *psmouse) } /* Bytes 2 - pktsize should have 0 in the highest bit */ - if ((priv->proto_version < ALPS_PROTO_V5) && + if (priv->proto_version < ALPS_PROTO_V5 && psmouse->pktcnt >= 2 && psmouse->pktcnt <= psmouse->pktsize && (psmouse->packet[psmouse->pktcnt - 1] & 0x80)) { psmouse_dbg(psmouse, "refusing packet[%i] = %x\n", psmouse->pktcnt - 1, psmouse->packet[psmouse->pktcnt - 1]); + + if (priv->proto_version == ALPS_PROTO_V3 && + psmouse->pktcnt == psmouse->pktsize) { + /* + * Some Dell boxes, such as Latitude E6440 or E7440 + * with closed lid, quite often smash last byte of + * otherwise valid packet with 0xff. Given that the + * next packet is very likely to be valid let's + * report PSMOUSE_FULL_PACKET but not process data, + * rather than reporting PSMOUSE_BAD_DATA and + * filling the logs. + */ + return PSMOUSE_FULL_PACKET; + } + return PSMOUSE_BAD_DATA; } From f386474e12a560e005ec7899e78f51f6bdc3cf41 Mon Sep 17 00:00:00 2001 From: Ulrik De Bie Date: Thu, 13 Nov 2014 17:45:12 -0800 Subject: [PATCH 354/371] Input: elantech - report the middle button of the touchpad In the past, no elantech was known with 3 touchpad mouse buttons. Fujitsu H730 is the first known elantech with a middle button. This commit enables this middle button. For backwards compatibility, the Fujitsu is detected via DMI, and only for this one 3 buttons will be announced. Reported-by: Stefan Valouch Signed-off-by: Ulrik De Bie Signed-off-by: Dmitry Torokhov --- drivers/input/mouse/elantech.c | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) diff --git a/drivers/input/mouse/elantech.c b/drivers/input/mouse/elantech.c index ce699eba9adc..6d628f155c08 100644 --- a/drivers/input/mouse/elantech.c +++ b/drivers/input/mouse/elantech.c @@ -563,6 +563,7 @@ static void elantech_input_sync_v4(struct psmouse *psmouse) } else { input_report_key(dev, BTN_LEFT, packet[0] & 0x01); input_report_key(dev, BTN_RIGHT, packet[0] & 0x02); + input_report_key(dev, BTN_MIDDLE, packet[0] & 0x04); } input_mt_report_pointer_emulation(dev, true); @@ -1131,6 +1132,22 @@ static void elantech_set_buttonpad_prop(struct psmouse *psmouse) } } +/* + * Some hw_version 4 models do have a middle button + */ +static const struct dmi_system_id elantech_dmi_has_middle_button[] = { +#if defined(CONFIG_DMI) && defined(CONFIG_X86) + { + /* Fujitsu H730 has a middle button */ + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"), + DMI_MATCH(DMI_PRODUCT_NAME, "CELSIUS H730"), + }, + }, +#endif + { } +}; + /* * Set the appropriate event bits for the input subsystem */ @@ -1150,6 +1167,8 @@ static int elantech_set_input_params(struct psmouse *psmouse) __clear_bit(EV_REL, dev->evbit); __set_bit(BTN_LEFT, dev->keybit); + if (dmi_check_system(elantech_dmi_has_middle_button)) + __set_bit(BTN_MIDDLE, dev->keybit); __set_bit(BTN_RIGHT, dev->keybit); __set_bit(BTN_TOUCH, dev->keybit); From 2d9eb81fdb9f08df3a4b1638c1270a4453b40ac2 Mon Sep 17 00:00:00 2001 From: Ulrik De Bie Date: Thu, 13 Nov 2014 17:47:04 -0800 Subject: [PATCH 355/371] Input: elantech - provide a sysfs knob for crc_enabled The detection of crc_enabled is known to fail for Fujitsu H730. A DMI blacklist is added for that, but it can be expected that other laptops will pop up with this. Here a sysfs knob is provided to alter the behaviour of crc_enabled. Writing 0 or 1 to it sets the variable to 0 or 1. Reading it will show the crc_enabled variable (0 or 1). Reported-by: Stefan Valouch Signed-off-by: Ulrik De Bie Signed-off-by: Dmitry Torokhov --- drivers/input/mouse/elantech.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/input/mouse/elantech.c b/drivers/input/mouse/elantech.c index 6d628f155c08..3fcb6b3cb0bd 100644 --- a/drivers/input/mouse/elantech.c +++ b/drivers/input/mouse/elantech.c @@ -1330,6 +1330,7 @@ ELANTECH_INT_ATTR(reg_25, 0x25); ELANTECH_INT_ATTR(reg_26, 0x26); ELANTECH_INT_ATTR(debug, 0); ELANTECH_INT_ATTR(paritycheck, 0); +ELANTECH_INT_ATTR(crc_enabled, 0); static struct attribute *elantech_attrs[] = { &psmouse_attr_reg_07.dattr.attr, @@ -1344,6 +1345,7 @@ static struct attribute *elantech_attrs[] = { &psmouse_attr_reg_26.dattr.attr, &psmouse_attr_debug.dattr.attr, &psmouse_attr_paritycheck.dattr.attr, + &psmouse_attr_crc_enabled.dattr.attr, NULL }; From c6c748ef85c342d2726fc3c91c6a2af313af2360 Mon Sep 17 00:00:00 2001 From: Ulrik De Bie Date: Thu, 13 Nov 2014 17:48:06 -0800 Subject: [PATCH 356/371] Input: elantech - update the documentation A chapter is added to describe the trackpoint packets. A section is added to describe the behaviour of the knob crc_enabled in sysfs. The introduction of the documentation only mentioned v1/v2, but in the last part it already contains explanation of v3 and v4. The introduction is updated. Signed-off-by: Ulrik De Bie Signed-off-by: Dmitry Torokhov --- Documentation/input/elantech.txt | 81 +++++++++++++++++++++++++++++--- 1 file changed, 75 insertions(+), 6 deletions(-) diff --git a/Documentation/input/elantech.txt b/Documentation/input/elantech.txt index e1ae127ed099..1ec0db7879d3 100644 --- a/Documentation/input/elantech.txt +++ b/Documentation/input/elantech.txt @@ -38,22 +38,38 @@ Contents 7.2.1 Status packet 7.2.2 Head packet 7.2.3 Motion packet + 8. Trackpoint (for Hardware version 3 and 4) + 8.1 Registers + 8.2 Native relative mode 6 byte packet format + 8.2.1 Status Packet 1. Introduction ~~~~~~~~~~~~ -Currently the Linux Elantech touchpad driver is aware of two different -hardware versions unimaginatively called version 1 and version 2. Version 1 -is found in "older" laptops and uses 4 bytes per packet. Version 2 seems to -be introduced with the EeePC and uses 6 bytes per packet, and provides -additional features such as position of two fingers, and width of the touch. +Currently the Linux Elantech touchpad driver is aware of four different +hardware versions unimaginatively called version 1,version 2, version 3 +and version 4. Version 1 is found in "older" laptops and uses 4 bytes per +packet. Version 2 seems to be introduced with the EeePC and uses 6 bytes +per packet, and provides additional features such as position of two fingers, +and width of the touch. Hardware version 3 uses 6 bytes per packet (and +for 2 fingers the concatenation of two 6 bytes packets) and allows tracking +of up to 3 fingers. Hardware version 4 uses 6 bytes per packet, and can +combine a status packet with multiple head or motion packets. Hardware version +4 allows tracking up to 5 fingers. + +Some Hardware version 3 and version 4 also have a trackpoint which uses a +separate packet format. It is also 6 bytes per packet. The driver tries to support both hardware versions and should be compatible with the Xorg Synaptics touchpad driver and its graphical configuration utilities. +Note that a mouse button is also associated with either the touchpad or the +trackpoint when a trackpoint is available. Disabling the Touchpad in xorg +(TouchPadOff=0) will also disable the buttons associated with the touchpad. + Additionally the operation of the touchpad can be altered by adjusting the contents of some of its internal registers. These registers are represented by the driver as sysfs entries under /sys/bus/serio/drivers/psmouse/serio? @@ -78,7 +94,7 @@ completeness sake. 2. Extra knobs ~~~~~~~~~~~ -Currently the Linux Elantech touchpad driver provides two extra knobs under +Currently the Linux Elantech touchpad driver provides three extra knobs under /sys/bus/serio/drivers/psmouse/serio? for the user. * debug @@ -112,6 +128,20 @@ Currently the Linux Elantech touchpad driver provides two extra knobs under data consistency checking can be done. For now checking is disabled by default. Currently even turning it on will do nothing. +* crc_enabled + + Sets crc_enabled to 0/1. The name "crc_enabled" is the official name of + this integrity check, even though it is not an actual cyclic redundancy + check. + + Depending on the state of crc_enabled, certain basic data integrity + verification is done by the driver on hardware version 3 and 4. The + driver will reject any packet that appears corrupted. Using this knob, + The state of crc_enabled can be altered with this knob. + + Reading the crc_enabled value will show the active value. Echoing + "0" or "1" to this file will set the state to "0" or "1". + ///////////////////////////////////////////////////////////////////////////// 3. Differentiating hardware versions @@ -746,3 +776,42 @@ byte 5: byte 0 ~ 2 for one finger byte 3 ~ 5 for another + + +8. Trackpoint (for Hardware version 3 and 4) + ========================================= +8.1 Registers + ~~~~~~~~~ +No special registers have been identified. + +8.2 Native relative mode 6 byte packet format + ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +8.2.1 Status Packet + ~~~~~~~~~~~~~ + +byte 0: + bit 7 6 5 4 3 2 1 0 + 0 0 sx sy 0 M R L +byte 1: + bit 7 6 5 4 3 2 1 0 + ~sx 0 0 0 0 0 0 0 +byte 2: + bit 7 6 5 4 3 2 1 0 + ~sy 0 0 0 0 0 0 0 +byte 3: + bit 7 6 5 4 3 2 1 0 + 0 0 ~sy ~sx 0 1 1 0 +byte 4: + bit 7 6 5 4 3 2 1 0 + x7 x6 x5 x4 x3 x2 x1 x0 +byte 5: + bit 7 6 5 4 3 2 1 0 + y7 y6 y5 y4 y3 y2 y1 y0 + + + x and y are written in two's complement spread + over 9 bits with sx/sy the relative top bit and + x7..x0 and y7..y0 the lower bits. + ~sx is the inverse of sx, ~sy is the inverse of sy. + The sign of y is opposite to what the input driver + expects for a relative movement From eaca2d8e75e90a70a63a6695c9f61932609db212 Mon Sep 17 00:00:00 2001 From: Stefan Richter Date: Tue, 11 Nov 2014 17:16:44 +0100 Subject: [PATCH 357/371] firewire: cdev: prevent kernel stack leaking into ioctl arguments Found by the UC-KLEE tool: A user could supply less input to firewire-cdev ioctls than write- or write/read-type ioctl handlers expect. The handlers used data from uninitialized kernel stack then. This could partially leak back to the user if the kernel subsequently generated fw_cdev_event_'s (to be read from the firewire-cdev fd) which notably would contain the _u64 closure field which many of the ioctl argument structures contain. The fact that the handlers would act on random garbage input is a lesser issue since all handlers must check their input anyway. The fix simply always null-initializes the entire ioctl argument buffer regardless of the actual length of expected user input. That is, a runtime overhead of memset(..., 40) is added to each firewirew-cdev ioctl() call. [Comment from Clemens Ladisch: This part of the stack is most likely to be already in the cache.] Remarks: - There was never any leak from kernel stack to the ioctl output buffer itself. IOW, it was not possible to read kernel stack by a read-type or write/read-type ioctl alone; the leak could at most happen in combination with read()ing subsequent event data. - The actual expected minimum user input of each ioctl from include/uapi/linux/firewire-cdev.h is, in bytes: [0x00] = 32, [0x05] = 4, [0x0a] = 16, [0x0f] = 20, [0x14] = 16, [0x01] = 36, [0x06] = 20, [0x0b] = 4, [0x10] = 20, [0x15] = 20, [0x02] = 20, [0x07] = 4, [0x0c] = 0, [0x11] = 0, [0x16] = 8, [0x03] = 4, [0x08] = 24, [0x0d] = 20, [0x12] = 36, [0x17] = 12, [0x04] = 20, [0x09] = 24, [0x0e] = 4, [0x13] = 40, [0x18] = 4. Reported-by: David Ramos Cc: Signed-off-by: Stefan Richter --- drivers/firewire/core-cdev.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/firewire/core-cdev.c b/drivers/firewire/core-cdev.c index 5d997a33907e..2a3973a7c441 100644 --- a/drivers/firewire/core-cdev.c +++ b/drivers/firewire/core-cdev.c @@ -1637,8 +1637,7 @@ static int dispatch_ioctl(struct client *client, _IOC_SIZE(cmd) > sizeof(buffer)) return -ENOTTY; - if (_IOC_DIR(cmd) == _IOC_READ) - memset(&buffer, 0, _IOC_SIZE(cmd)); + memset(&buffer, 0, sizeof(buffer)); if (_IOC_DIR(cmd) & _IOC_WRITE) if (copy_from_user(&buffer, arg, _IOC_SIZE(cmd))) From 51b97e354ba9fce1890cf38ecc754aa49677fc89 Mon Sep 17 00:00:00 2001 From: "Kirill A. Shutemov" Date: Mon, 20 Oct 2014 12:23:12 +0300 Subject: [PATCH 358/371] kernel: use the gnu89 standard explicitly Sasha Levin reports: "gcc5 changes the default standard to c11, which makes kernel build unhappy Explicitly define the kernel standard to be gnu89 which should keep everything working exactly like it was before gcc5" There are multiple small issues with the new default, but the biggest issue seems to be that the old - and very useful - GNU extension to allow a cast in front of an initializer has gone away. Patch updated by Kirill: "I'm pretty sure all gcc versions you can build kernel with supports -std=gnu89. cc-option is redunrant. We also need to adjust HOSTCFLAGS otherwise allmodconfig fails for me" Note by Andrew Pinski: "Yes it was reported and both problems relating to this extension has been added to gnu99 and gnu11. Though there are other issues with the kernel dealing with extern inline have different semantics between gnu89 and gnu99/11" End result: we may be able to move up to a newer stdc model eventually, but right now the newer models have some annoying deficiencies, so the traditional "gnu89" model ends up being the preferred one. Signed-off-by: Sasha Levin Singed-off-by: Kirill A. Shutemov Signed-off-by: Linus Torvalds --- Makefile | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/Makefile b/Makefile index bc7eb6ada966..6e1b8e76dfb5 100644 --- a/Makefile +++ b/Makefile @@ -297,7 +297,7 @@ CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \ HOSTCC = gcc HOSTCXX = g++ -HOSTCFLAGS = -Wall -Wmissing-prototypes -Wstrict-prototypes -O2 -fomit-frame-pointer +HOSTCFLAGS = -Wall -Wmissing-prototypes -Wstrict-prototypes -O2 -fomit-frame-pointer -std=gnu89 HOSTCXXFLAGS = -O2 ifeq ($(shell $(HOSTCC) -v 2>&1 | grep -c "clang version"), 1) @@ -401,7 +401,8 @@ KBUILD_CPPFLAGS := -D__KERNEL__ KBUILD_CFLAGS := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \ -fno-strict-aliasing -fno-common \ -Werror-implicit-function-declaration \ - -Wno-format-security + -Wno-format-security \ + -std=gnu89 KBUILD_AFLAGS_KERNEL := KBUILD_CFLAGS_KERNEL := From 3b91270a0a2fe00b7aa1ce16b3ecf055315c64e3 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sun, 16 Nov 2014 11:00:42 -0800 Subject: [PATCH 359/371] x86-64: make csum_partial_copy_from_user() error handling consistent Al Viro pointed out that the x86-64 csum_partial_copy_from_user() is somewhat confused about what it should do on errors, notably it mostly clears the uncopied end result buffer, but misses that for the initial alignment case. All users should check for errors, so it's dubious whether the clearing is even necessary, and Al also points out that we should probably clean up the calling conventions, but regardless of any future changes to this function, the fact that it is inconsistent is just annoying. So make the __get_user() failure path use the same error exit as all the other errors do. Reported-by: Al Viro Cc: David Miller Cc: Andi Kleen Signed-off-by: Linus Torvalds --- arch/x86/lib/csum-wrappers_64.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/arch/x86/lib/csum-wrappers_64.c b/arch/x86/lib/csum-wrappers_64.c index 7609e0e421ec..1318f75d56e4 100644 --- a/arch/x86/lib/csum-wrappers_64.c +++ b/arch/x86/lib/csum-wrappers_64.c @@ -41,9 +41,8 @@ csum_partial_copy_from_user(const void __user *src, void *dst, while (((unsigned long)src & 6) && len >= 2) { __u16 val16; - *errp = __get_user(val16, (const __u16 __user *)src); - if (*errp) - return isum; + if (__get_user(val16, (const __u16 __user *)src)) + goto out_err; *(__u16 *)dst = val16; isum = (__force __wsum)add32_with_carry( From 5a2b59d3993e8ca4f7788a48a23e5cb303f26954 Mon Sep 17 00:00:00 2001 From: "David S. Miller" Date: Sun, 16 Nov 2014 13:19:32 -0800 Subject: [PATCH 360/371] sparc64: Fix constraints on swab helpers. We are reading the memory location, so we have to have a memory constraint in there purely for the sake of showing the data flow to the compiler. Reported-by: Martin K. Petersen Signed-off-by: David S. Miller --- arch/sparc/include/uapi/asm/swab.h | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) diff --git a/arch/sparc/include/uapi/asm/swab.h b/arch/sparc/include/uapi/asm/swab.h index a34ad079487e..4c7c12d69bea 100644 --- a/arch/sparc/include/uapi/asm/swab.h +++ b/arch/sparc/include/uapi/asm/swab.h @@ -9,9 +9,9 @@ static inline __u16 __arch_swab16p(const __u16 *addr) { __u16 ret; - __asm__ __volatile__ ("lduha [%1] %2, %0" + __asm__ __volatile__ ("lduha [%2] %3, %0" : "=r" (ret) - : "r" (addr), "i" (ASI_PL)); + : "m" (*addr), "r" (addr), "i" (ASI_PL)); return ret; } #define __arch_swab16p __arch_swab16p @@ -20,9 +20,9 @@ static inline __u32 __arch_swab32p(const __u32 *addr) { __u32 ret; - __asm__ __volatile__ ("lduwa [%1] %2, %0" + __asm__ __volatile__ ("lduwa [%2] %3, %0" : "=r" (ret) - : "r" (addr), "i" (ASI_PL)); + : "m" (*addr), "r" (addr), "i" (ASI_PL)); return ret; } #define __arch_swab32p __arch_swab32p @@ -31,9 +31,9 @@ static inline __u64 __arch_swab64p(const __u64 *addr) { __u64 ret; - __asm__ __volatile__ ("ldxa [%1] %2, %0" + __asm__ __volatile__ ("ldxa [%2] %3, %0" : "=r" (ret) - : "r" (addr), "i" (ASI_PL)); + : "m" (*addr), "r" (addr), "i" (ASI_PL)); return ret; } #define __arch_swab64p __arch_swab64p From 45eaf45dfa4850df16bc2e8e7903d89021137f40 Mon Sep 17 00:00:00 2001 From: NeilBrown Date: Wed, 29 Oct 2014 08:49:50 +1100 Subject: [PATCH 361/371] md: Always set RECOVERY_NEEDED when clearing RECOVERY_FROZEN md_check_recovery will skip any recovery and also clear MD_RECOVERY_NEEDED if MD_RECOVERY_FROZEN is set. So when we clear _FROZEN, we must set _NEEDED and ensure that md_check_recovery gets run. Otherwise we could miss out on something that is needed. In particular, this can make it impossible to remove a failed device from an array is the 'recovery-needed' processing didn't happen. Suitable for stable kernels since 3.13. Cc: stable@vger.kernel.org (3.13+) Reported-and-tested-by: Joe Lawrence Fixes: 30b8feb730f9b9b3c5de02580897da03f59b6b16 Signed-off-by: NeilBrown --- drivers/md/md.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/md/md.c b/drivers/md/md.c index 4dfa15da9cb8..9233c71138f1 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -5121,6 +5121,7 @@ static int md_set_readonly(struct mddev *mddev, struct block_device *bdev) printk("md: %s still in use.\n",mdname(mddev)); if (did_freeze) { clear_bit(MD_RECOVERY_FROZEN, &mddev->recovery); + set_bit(MD_RECOVERY_NEEDED, &mddev->recovery); md_wakeup_thread(mddev->thread); } err = -EBUSY; @@ -5135,6 +5136,8 @@ static int md_set_readonly(struct mddev *mddev, struct block_device *bdev) mddev->ro = 1; set_disk_ro(mddev->gendisk, 1); clear_bit(MD_RECOVERY_FROZEN, &mddev->recovery); + set_bit(MD_RECOVERY_NEEDED, &mddev->recovery); + md_wakeup_thread(mddev->thread); sysfs_notify_dirent_safe(mddev->sysfs_state); err = 0; } @@ -5178,6 +5181,7 @@ static int do_md_stop(struct mddev *mddev, int mode, mutex_unlock(&mddev->open_mutex); if (did_freeze) { clear_bit(MD_RECOVERY_FROZEN, &mddev->recovery); + set_bit(MD_RECOVERY_NEEDED, &mddev->recovery); md_wakeup_thread(mddev->thread); } return -EBUSY; From e899dbaf4898efdaf6d1a02ed4ac205d35f54df8 Mon Sep 17 00:00:00 2001 From: Peter Rosin Date: Thu, 23 Oct 2014 13:52:03 +0200 Subject: [PATCH 362/371] ARM: at91/dt: Fix sama5d3x typos Some DT files had a typo with a missing "5" in sama5d3x first compatible string. Signed-off-by: Peter Rosin [nicolas.ferre@atmel.com: modify commit log] Signed-off-by: Nicolas Ferre Signed-off-by: Olof Johansson --- arch/arm/boot/dts/sama5d31.dtsi | 2 +- arch/arm/boot/dts/sama5d33.dtsi | 2 +- arch/arm/boot/dts/sama5d34.dtsi | 2 +- arch/arm/boot/dts/sama5d35.dtsi | 2 +- arch/arm/boot/dts/sama5d36.dtsi | 2 +- arch/arm/boot/dts/sama5d3xcm.dtsi | 2 +- 6 files changed, 6 insertions(+), 6 deletions(-) diff --git a/arch/arm/boot/dts/sama5d31.dtsi b/arch/arm/boot/dts/sama5d31.dtsi index 7997dc9863ed..883878b32971 100644 --- a/arch/arm/boot/dts/sama5d31.dtsi +++ b/arch/arm/boot/dts/sama5d31.dtsi @@ -12,5 +12,5 @@ #include "sama5d3_uart.dtsi" / { - compatible = "atmel,samad31", "atmel,sama5d3", "atmel,sama5"; + compatible = "atmel,sama5d31", "atmel,sama5d3", "atmel,sama5"; }; diff --git a/arch/arm/boot/dts/sama5d33.dtsi b/arch/arm/boot/dts/sama5d33.dtsi index 39f832253caf..4b4434aca351 100644 --- a/arch/arm/boot/dts/sama5d33.dtsi +++ b/arch/arm/boot/dts/sama5d33.dtsi @@ -10,5 +10,5 @@ #include "sama5d3_gmac.dtsi" / { - compatible = "atmel,samad33", "atmel,sama5d3", "atmel,sama5"; + compatible = "atmel,sama5d33", "atmel,sama5d3", "atmel,sama5"; }; diff --git a/arch/arm/boot/dts/sama5d34.dtsi b/arch/arm/boot/dts/sama5d34.dtsi index 89cda2c0da39..aa01573fdee9 100644 --- a/arch/arm/boot/dts/sama5d34.dtsi +++ b/arch/arm/boot/dts/sama5d34.dtsi @@ -12,5 +12,5 @@ #include "sama5d3_mci2.dtsi" / { - compatible = "atmel,samad34", "atmel,sama5d3", "atmel,sama5"; + compatible = "atmel,sama5d34", "atmel,sama5d3", "atmel,sama5"; }; diff --git a/arch/arm/boot/dts/sama5d35.dtsi b/arch/arm/boot/dts/sama5d35.dtsi index d20cd71b5f0e..16c39f4c96a4 100644 --- a/arch/arm/boot/dts/sama5d35.dtsi +++ b/arch/arm/boot/dts/sama5d35.dtsi @@ -14,5 +14,5 @@ #include "sama5d3_tcb1.dtsi" / { - compatible = "atmel,samad35", "atmel,sama5d3", "atmel,sama5"; + compatible = "atmel,sama5d35", "atmel,sama5d3", "atmel,sama5"; }; diff --git a/arch/arm/boot/dts/sama5d36.dtsi b/arch/arm/boot/dts/sama5d36.dtsi index db58cad6acd3..e85139ef40af 100644 --- a/arch/arm/boot/dts/sama5d36.dtsi +++ b/arch/arm/boot/dts/sama5d36.dtsi @@ -16,5 +16,5 @@ #include "sama5d3_uart.dtsi" / { - compatible = "atmel,samad36", "atmel,sama5d3", "atmel,sama5"; + compatible = "atmel,sama5d36", "atmel,sama5d3", "atmel,sama5"; }; diff --git a/arch/arm/boot/dts/sama5d3xcm.dtsi b/arch/arm/boot/dts/sama5d3xcm.dtsi index 962dc28dc37b..cfcd200b0c17 100644 --- a/arch/arm/boot/dts/sama5d3xcm.dtsi +++ b/arch/arm/boot/dts/sama5d3xcm.dtsi @@ -8,7 +8,7 @@ */ / { - compatible = "atmel,samad3xcm", "atmel,sama5d3", "atmel,sama5"; + compatible = "atmel,sama5d3xcm", "atmel,sama5d3", "atmel,sama5"; chosen { bootargs = "console=ttyS0,115200 rootfstype=ubifs ubi.mtd=5 root=ubi0:rootfs"; From fc14f9c1272f62c3e8d01300f52467c0d9af50f9 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sun, 16 Nov 2014 16:36:20 -0800 Subject: [PATCH 363/371] Linux 3.18-rc5 --- Makefile | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/Makefile b/Makefile index 6e1b8e76dfb5..00d618bbe8e7 100644 --- a/Makefile +++ b/Makefile @@ -1,7 +1,7 @@ VERSION = 3 PATCHLEVEL = 18 SUBLEVEL = 0 -EXTRAVERSION = -rc4 +EXTRAVERSION = -rc5 NAME = Diseased Newt # *DOCUMENTATION* From ef94b1864d1ed5be54376404bb23d22ed0481feb Mon Sep 17 00:00:00 2001 From: Miklos Szeredi Date: Thu, 20 Nov 2014 16:39:59 +0100 Subject: [PATCH 364/371] ovl: rename filesystem type to "overlay" Some distributions carry an "old" format of overlayfs while mainline has a "new" format. The distros will possibly want to keep the old overlayfs alongside the new for compatibility reasons. To make it possible to differentiate the two versions change the name of the new one from "overlayfs" to "overlay". Signed-off-by: Miklos Szeredi Reported-by: Serge Hallyn Cc: Andy Whitcroft --- Documentation/filesystems/overlayfs.txt | 2 +- MAINTAINERS | 2 +- fs/Makefile | 2 +- fs/overlayfs/Kconfig | 2 +- fs/overlayfs/Makefile | 4 ++-- fs/overlayfs/super.c | 6 +++--- 6 files changed, 9 insertions(+), 9 deletions(-) diff --git a/Documentation/filesystems/overlayfs.txt b/Documentation/filesystems/overlayfs.txt index 530850a72735..a27c950ece61 100644 --- a/Documentation/filesystems/overlayfs.txt +++ b/Documentation/filesystems/overlayfs.txt @@ -64,7 +64,7 @@ is formed. At mount time, the two directories given as mount options "lowerdir" and "upperdir" are combined into a merged directory: - mount -t overlayfs overlayfs -olowerdir=/lower,upperdir=/upper,\ + mount -t overlay overlay -olowerdir=/lower,upperdir=/upper,\ workdir=/work /merged The "workdir" needs to be an empty directory on the same filesystem diff --git a/MAINTAINERS b/MAINTAINERS index c444907ccd69..af1e738e8772 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -6888,7 +6888,7 @@ F: drivers/scsi/osd/ F: include/scsi/osd_* F: fs/exofs/ -OVERLAYFS FILESYSTEM +OVERLAY FILESYSTEM M: Miklos Szeredi L: linux-fsdevel@vger.kernel.org S: Supported diff --git a/fs/Makefile b/fs/Makefile index 34a1b9dea6dd..da0bbb456d3f 100644 --- a/fs/Makefile +++ b/fs/Makefile @@ -104,7 +104,7 @@ obj-$(CONFIG_QNX6FS_FS) += qnx6/ obj-$(CONFIG_AUTOFS4_FS) += autofs4/ obj-$(CONFIG_ADFS_FS) += adfs/ obj-$(CONFIG_FUSE_FS) += fuse/ -obj-$(CONFIG_OVERLAYFS_FS) += overlayfs/ +obj-$(CONFIG_OVERLAY_FS) += overlayfs/ obj-$(CONFIG_UDF_FS) += udf/ obj-$(CONFIG_SUN_OPENPROMFS) += openpromfs/ obj-$(CONFIG_OMFS_FS) += omfs/ diff --git a/fs/overlayfs/Kconfig b/fs/overlayfs/Kconfig index e60125976873..34355818a2e0 100644 --- a/fs/overlayfs/Kconfig +++ b/fs/overlayfs/Kconfig @@ -1,4 +1,4 @@ -config OVERLAYFS_FS +config OVERLAY_FS tristate "Overlay filesystem support" help An overlay filesystem combines two filesystems - an 'upper' filesystem diff --git a/fs/overlayfs/Makefile b/fs/overlayfs/Makefile index 8f91889480d0..900daed3e91d 100644 --- a/fs/overlayfs/Makefile +++ b/fs/overlayfs/Makefile @@ -2,6 +2,6 @@ # Makefile for the overlay filesystem. # -obj-$(CONFIG_OVERLAYFS_FS) += overlayfs.o +obj-$(CONFIG_OVERLAY_FS) += overlay.o -overlayfs-objs := super.o inode.o dir.o readdir.o copy_up.o +overlay-objs := super.o inode.o dir.o readdir.o copy_up.o diff --git a/fs/overlayfs/super.c b/fs/overlayfs/super.c index 08b704cebfc4..b92bd1829cf7 100644 --- a/fs/overlayfs/super.c +++ b/fs/overlayfs/super.c @@ -24,7 +24,7 @@ MODULE_AUTHOR("Miklos Szeredi "); MODULE_DESCRIPTION("Overlay filesystem"); MODULE_LICENSE("GPL"); -#define OVERLAYFS_SUPER_MAGIC 0x794c764f +#define OVERLAYFS_SUPER_MAGIC 0x794c7630 struct ovl_config { char *lowerdir; @@ -776,11 +776,11 @@ static struct dentry *ovl_mount(struct file_system_type *fs_type, int flags, static struct file_system_type ovl_fs_type = { .owner = THIS_MODULE, - .name = "overlayfs", + .name = "overlay", .mount = ovl_mount, .kill_sb = kill_anon_super, }; -MODULE_ALIAS_FS("overlayfs"); +MODULE_ALIAS_FS("overlay"); static int __init ovl_init(void) { From a105d685a8483985a01776411de191a726b48132 Mon Sep 17 00:00:00 2001 From: Miklos Szeredi Date: Thu, 20 Nov 2014 16:39:59 +0100 Subject: [PATCH 365/371] ovl: fix remove/copy-up race ovl_remove_and_whiteout() needs to check if upper dentry exists or not after having locked upper parent directory. Previously we used a "type" value computed before locking the upper parent directory, which is susceptible to racing with copy-up. There's a similar check in ovl_check_empty_and_clear(). This one is not actually racy, since copy-up doesn't change the "emptyness" property of a directory. Add a comment to this effect, and check the existence of upper dentry locally to make the code cleaner. Signed-off-by: Miklos Szeredi --- fs/overlayfs/dir.c | 31 +++++++++++++++++++------------ 1 file changed, 19 insertions(+), 12 deletions(-) diff --git a/fs/overlayfs/dir.c b/fs/overlayfs/dir.c index 15cd91ad9940..8ffc4b980f1b 100644 --- a/fs/overlayfs/dir.c +++ b/fs/overlayfs/dir.c @@ -284,8 +284,7 @@ out: return ERR_PTR(err); } -static struct dentry *ovl_check_empty_and_clear(struct dentry *dentry, - enum ovl_path_type type) +static struct dentry *ovl_check_empty_and_clear(struct dentry *dentry) { int err; struct dentry *ret = NULL; @@ -294,8 +293,17 @@ static struct dentry *ovl_check_empty_and_clear(struct dentry *dentry, err = ovl_check_empty_dir(dentry, &list); if (err) ret = ERR_PTR(err); - else if (type == OVL_PATH_MERGE) - ret = ovl_clear_empty(dentry, &list); + else { + /* + * If no upperdentry then skip clearing whiteouts. + * + * Can race with copy-up, since we don't hold the upperdir + * mutex. Doesn't matter, since copy-up can't create a + * non-empty directory from an empty one. + */ + if (ovl_dentry_upper(dentry)) + ret = ovl_clear_empty(dentry, &list); + } ovl_cache_free(&list); @@ -487,8 +495,7 @@ out: return err; } -static int ovl_remove_and_whiteout(struct dentry *dentry, - enum ovl_path_type type, bool is_dir) +static int ovl_remove_and_whiteout(struct dentry *dentry, bool is_dir) { struct dentry *workdir = ovl_workdir(dentry); struct inode *wdir = workdir->d_inode; @@ -500,7 +507,7 @@ static int ovl_remove_and_whiteout(struct dentry *dentry, int err; if (is_dir) { - opaquedir = ovl_check_empty_and_clear(dentry, type); + opaquedir = ovl_check_empty_and_clear(dentry); err = PTR_ERR(opaquedir); if (IS_ERR(opaquedir)) goto out; @@ -515,9 +522,10 @@ static int ovl_remove_and_whiteout(struct dentry *dentry, if (IS_ERR(whiteout)) goto out_unlock; - if (type == OVL_PATH_LOWER) { + upper = ovl_dentry_upper(dentry); + if (!upper) { upper = lookup_one_len(dentry->d_name.name, upperdir, - dentry->d_name.len); + dentry->d_name.len); err = PTR_ERR(upper); if (IS_ERR(upper)) goto kill_whiteout; @@ -529,7 +537,6 @@ static int ovl_remove_and_whiteout(struct dentry *dentry, } else { int flags = 0; - upper = ovl_dentry_upper(dentry); if (opaquedir) upper = opaquedir; err = -ESTALE; @@ -648,7 +655,7 @@ static int ovl_do_remove(struct dentry *dentry, bool is_dir) cap_raise(override_cred->cap_effective, CAP_CHOWN); old_cred = override_creds(override_cred); - err = ovl_remove_and_whiteout(dentry, type, is_dir); + err = ovl_remove_and_whiteout(dentry, is_dir); revert_creds(old_cred); put_cred(override_cred); @@ -781,7 +788,7 @@ static int ovl_rename2(struct inode *olddir, struct dentry *old, } if (overwrite && (new_type == OVL_PATH_LOWER || new_type == OVL_PATH_MERGE) && new_is_dir) { - opaquedir = ovl_check_empty_and_clear(new, new_type); + opaquedir = ovl_check_empty_and_clear(new); err = PTR_ERR(opaquedir); if (IS_ERR(opaquedir)) { opaquedir = NULL; From 521484639ec19a6f1ed56de6993feb255f5f676c Mon Sep 17 00:00:00 2001 From: Miklos Szeredi Date: Thu, 20 Nov 2014 16:40:00 +0100 Subject: [PATCH 366/371] ovl: fix race in private xattr checks Xattr operations can race with copy up. This does not matter as long as we consistently fiter out "trunsted.overlay.opaque" attribute on upper directories. Previously we checked parent against OVL_PATH_MERGE. This is too general, and prone to race with copy-up. I.e. we found the parent to be on the lower layer but ovl_dentry_real() would return the copied-up dentry, possibly with the "opaque" attribute. So instead use ovl_path_real() and decide to filter the attributes based on the actual type of the dentry we'll use. Signed-off-by: Miklos Szeredi --- fs/overlayfs/inode.c | 27 ++++++++++++++++++--------- 1 file changed, 18 insertions(+), 9 deletions(-) diff --git a/fs/overlayfs/inode.c b/fs/overlayfs/inode.c index af2d18c9fcee..07d74b24913b 100644 --- a/fs/overlayfs/inode.c +++ b/fs/overlayfs/inode.c @@ -235,26 +235,36 @@ out: return err; } +static bool ovl_need_xattr_filter(struct dentry *dentry, + enum ovl_path_type type) +{ + return type == OVL_PATH_UPPER && S_ISDIR(dentry->d_inode->i_mode); +} + ssize_t ovl_getxattr(struct dentry *dentry, const char *name, void *value, size_t size) { - if (ovl_path_type(dentry->d_parent) == OVL_PATH_MERGE && - ovl_is_private_xattr(name)) + struct path realpath; + enum ovl_path_type type = ovl_path_real(dentry, &realpath); + + if (ovl_need_xattr_filter(dentry, type) && ovl_is_private_xattr(name)) return -ENODATA; - return vfs_getxattr(ovl_dentry_real(dentry), name, value, size); + return vfs_getxattr(realpath.dentry, name, value, size); } ssize_t ovl_listxattr(struct dentry *dentry, char *list, size_t size) { + struct path realpath; + enum ovl_path_type type = ovl_path_real(dentry, &realpath); ssize_t res; int off; - res = vfs_listxattr(ovl_dentry_real(dentry), list, size); + res = vfs_listxattr(realpath.dentry, list, size); if (res <= 0 || size == 0) return res; - if (ovl_path_type(dentry->d_parent) != OVL_PATH_MERGE) + if (!ovl_need_xattr_filter(dentry, type)) return res; /* filter out private xattrs */ @@ -279,17 +289,16 @@ int ovl_removexattr(struct dentry *dentry, const char *name) { int err; struct path realpath; - enum ovl_path_type type; + enum ovl_path_type type = ovl_path_real(dentry, &realpath); err = ovl_want_write(dentry); if (err) goto out; - if (ovl_path_type(dentry->d_parent) == OVL_PATH_MERGE && - ovl_is_private_xattr(name)) + err = -ENODATA; + if (ovl_need_xattr_filter(dentry, type) && ovl_is_private_xattr(name)) goto out_drop_write; - type = ovl_path_real(dentry, &realpath); if (type == OVL_PATH_LOWER) { err = vfs_getxattr(realpath.dentry, name, NULL, 0); if (err < 0) From 91c77947133f7aef851b625701e182d3f99d14a9 Mon Sep 17 00:00:00 2001 From: Miklos Szeredi Date: Thu, 20 Nov 2014 16:40:00 +0100 Subject: [PATCH 367/371] ovl: allow filenames with comma Allow option separator (comma) to be escaped with backslash. Signed-off-by: Miklos Szeredi --- fs/overlayfs/super.c | 48 +++++++++++++++++++++++++++++++++++++++++--- 1 file changed, 45 insertions(+), 3 deletions(-) diff --git a/fs/overlayfs/super.c b/fs/overlayfs/super.c index b92bd1829cf7..eee7a62e1c0e 100644 --- a/fs/overlayfs/super.c +++ b/fs/overlayfs/super.c @@ -462,11 +462,34 @@ static const match_table_t ovl_tokens = { {OPT_ERR, NULL} }; +static char *ovl_next_opt(char **s) +{ + char *sbegin = *s; + char *p; + + if (sbegin == NULL) + return NULL; + + for (p = sbegin; *p; p++) { + if (*p == '\\') { + p++; + if (!*p) + break; + } else if (*p == ',') { + *p = '\0'; + *s = p + 1; + return sbegin; + } + } + *s = NULL; + return sbegin; +} + static int ovl_parse_opt(char *opt, struct ovl_config *config) { char *p; - while ((p = strsep(&opt, ",")) != NULL) { + while ((p = ovl_next_opt(&opt)) != NULL) { int token; substring_t args[MAX_OPT_ARGS]; @@ -554,15 +577,34 @@ out_dput: goto out_unlock; } +static void ovl_unescape(char *s) +{ + char *d = s; + + for (;; s++, d++) { + if (*s == '\\') + s++; + *d = *s; + if (!*s) + break; + } +} + static int ovl_mount_dir(const char *name, struct path *path) { int err; + char *tmp = kstrdup(name, GFP_KERNEL); - err = kern_path(name, LOOKUP_FOLLOW, path); + if (!tmp) + return -ENOMEM; + + ovl_unescape(tmp); + err = kern_path(tmp, LOOKUP_FOLLOW, path); if (err) { - pr_err("overlayfs: failed to resolve '%s': %i\n", name, err); + pr_err("overlayfs: failed to resolve '%s': %i\n", tmp, err); err = -EINVAL; } + kfree(tmp); return err; } From 71d509280f7e92eb60ae6b7c78c20afafff060c7 Mon Sep 17 00:00:00 2001 From: Miklos Szeredi Date: Thu, 20 Nov 2014 16:40:01 +0100 Subject: [PATCH 368/371] ovl: use lockless_dereference() for upperdentry Don't open code lockless_dereference() in ovl_upperdentry_dereference(). Signed-off-by: Miklos Szeredi --- fs/overlayfs/super.c | 7 +------ 1 file changed, 1 insertion(+), 6 deletions(-) diff --git a/fs/overlayfs/super.c b/fs/overlayfs/super.c index eee7a62e1c0e..f16d318b71f8 100644 --- a/fs/overlayfs/super.c +++ b/fs/overlayfs/super.c @@ -84,12 +84,7 @@ enum ovl_path_type ovl_path_type(struct dentry *dentry) static struct dentry *ovl_upperdentry_dereference(struct ovl_entry *oe) { - struct dentry *upperdentry = ACCESS_ONCE(oe->__upperdentry); - /* - * Make sure to order reads to upperdentry wrt ovl_dentry_update() - */ - smp_read_barrier_depends(); - return upperdentry; + return lockless_dereference(oe->__upperdentry); } void ovl_path_upper(struct dentry *dentry, struct path *path) From c9f00fdb9ab3999cb2fb582ad82a5db9e70c82f5 Mon Sep 17 00:00:00 2001 From: Miklos Szeredi Date: Thu, 20 Nov 2014 16:40:01 +0100 Subject: [PATCH 369/371] ovl: pass dentry into ovl_dir_read_merged() Pass dentry into ovl_dir_read_merged() insted of upperpath and lowerpath. This cleans up callers and paves the way for multi-layer directory reads. Signed-off-by: Miklos Szeredi --- fs/overlayfs/readdir.c | 35 ++++++++++++++--------------------- 1 file changed, 14 insertions(+), 21 deletions(-) diff --git a/fs/overlayfs/readdir.c b/fs/overlayfs/readdir.c index 2a7ef4f8e2a6..7299e962f334 100644 --- a/fs/overlayfs/readdir.c +++ b/fs/overlayfs/readdir.c @@ -274,11 +274,11 @@ static int ovl_dir_mark_whiteouts(struct dentry *dir, return 0; } -static inline int ovl_dir_read_merged(struct path *upperpath, - struct path *lowerpath, - struct list_head *list) +static int ovl_dir_read_merged(struct dentry *dentry, struct list_head *list) { int err; + struct path lowerpath; + struct path upperpath; struct ovl_readdir_data rdd = { .ctx.actor = ovl_fill_merge, .list = list, @@ -286,25 +286,28 @@ static inline int ovl_dir_read_merged(struct path *upperpath, .is_merge = false, }; - if (upperpath->dentry) { - err = ovl_dir_read(upperpath, &rdd); + ovl_path_lower(dentry, &lowerpath); + ovl_path_upper(dentry, &upperpath); + + if (upperpath.dentry) { + err = ovl_dir_read(&upperpath, &rdd); if (err) goto out; - if (lowerpath->dentry) { - err = ovl_dir_mark_whiteouts(upperpath->dentry, &rdd); + if (lowerpath.dentry) { + err = ovl_dir_mark_whiteouts(upperpath.dentry, &rdd); if (err) goto out; } } - if (lowerpath->dentry) { + if (lowerpath.dentry) { /* * Insert lowerpath entries before upperpath ones, this allows * offsets to be reasonably constant */ list_add(&rdd.middle, rdd.list); rdd.is_merge = true; - err = ovl_dir_read(lowerpath, &rdd); + err = ovl_dir_read(&lowerpath, &rdd); list_del(&rdd.middle); } out: @@ -329,8 +332,6 @@ static void ovl_seek_cursor(struct ovl_dir_file *od, loff_t pos) static struct ovl_dir_cache *ovl_cache_get(struct dentry *dentry) { int res; - struct path lowerpath; - struct path upperpath; struct ovl_dir_cache *cache; cache = ovl_dir_cache(dentry); @@ -347,10 +348,7 @@ static struct ovl_dir_cache *ovl_cache_get(struct dentry *dentry) cache->refcount = 1; INIT_LIST_HEAD(&cache->entries); - ovl_path_lower(dentry, &lowerpath); - ovl_path_upper(dentry, &upperpath); - - res = ovl_dir_read_merged(&upperpath, &lowerpath, &cache->entries); + res = ovl_dir_read_merged(dentry, &cache->entries); if (res) { ovl_cache_free(&cache->entries); kfree(cache); @@ -538,14 +536,9 @@ const struct file_operations ovl_dir_operations = { int ovl_check_empty_dir(struct dentry *dentry, struct list_head *list) { int err; - struct path lowerpath; - struct path upperpath; struct ovl_cache_entry *p; - ovl_path_upper(dentry, &upperpath); - ovl_path_lower(dentry, &lowerpath); - - err = ovl_dir_read_merged(&upperpath, &lowerpath, list); + err = ovl_dir_read_merged(dentry, list); if (err) return err; From 1d113735ecf21de74a04c3b58fa106ac2e64ca0d Mon Sep 17 00:00:00 2001 From: Miklos Szeredi Date: Thu, 20 Nov 2014 16:40:01 +0100 Subject: [PATCH 370/371] ovl: update MAINTAINERS There's a union/overlay specific mailing list now. Also add a git tree. Signed-off-by: Miklos Szeredi --- MAINTAINERS | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/MAINTAINERS b/MAINTAINERS index af1e738e8772..0ff630de8a6d 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -6890,9 +6890,10 @@ F: fs/exofs/ OVERLAY FILESYSTEM M: Miklos Szeredi -L: linux-fsdevel@vger.kernel.org +L: linux-unionfs@vger.kernel.org +T: git git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs.git S: Supported -F: fs/overlayfs/* +F: fs/overlayfs/ F: Documentation/filesystems/overlayfs.txt P54 WIRELESS DRIVER From 7676895f4736421ebafc48de5078e25ea69e88ee Mon Sep 17 00:00:00 2001 From: Miklos Szeredi Date: Thu, 20 Nov 2014 16:40:02 +0100 Subject: [PATCH 371/371] ovl: ovl_dir_fsync() cleanup Check against !OVL_PATH_LOWER instead of OVL_PATH_MERGE. For a copied up directory the two are currently equivalent. Signed-off-by: Miklos Szeredi --- fs/overlayfs/readdir.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/fs/overlayfs/readdir.c b/fs/overlayfs/readdir.c index 7299e962f334..ab1e3dcbed95 100644 --- a/fs/overlayfs/readdir.c +++ b/fs/overlayfs/readdir.c @@ -450,10 +450,10 @@ static int ovl_dir_fsync(struct file *file, loff_t start, loff_t end, /* * Need to check if we started out being a lower dir, but got copied up */ - if (!od->is_upper && ovl_path_type(dentry) == OVL_PATH_MERGE) { + if (!od->is_upper && ovl_path_type(dentry) != OVL_PATH_LOWER) { struct inode *inode = file_inode(file); - realfile =lockless_dereference(od->upperfile); + realfile = lockless_dereference(od->upperfile); if (!realfile) { struct path upperpath;