Commit Graph

7189 Commits

Author SHA1 Message Date
Linus Torvalds f6cff79f1d Char/Misc driver patches for 4.16-rc1
Here is the big pull request for char/misc drivers for 4.16-rc1.
 
 There's a lot of stuff in here.  Three new driver subsystems were added
 for various types of hardware busses:
 	- siox
 	- slimbus
 	- soundwire
 as well as a new vboxguest subsystem for the VirtualBox hypervisor
 drivers.
 
 There's also big updates from the FPGA subsystem, lots of Android binder
 fixes, the usual handful of hyper-v updates, and lots of other smaller
 driver updates.
 
 All of these have been in linux-next for a long time, with no reported
 issues.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'char-misc-4.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

Pull char/misc driver updates from Greg KH:
 "Here is the big pull request for char/misc drivers for 4.16-rc1.

  There's a lot of stuff in here. Three new driver subsystems were added
  for various types of hardware busses:

   - siox
   - slimbus
   - soundwire

  as well as a new vboxguest subsystem for the VirtualBox hypervisor
  drivers.

  There's also big updates from the FPGA subsystem, lots of Android
  binder fixes, the usual handful of hyper-v updates, and lots of other
  smaller driver updates.

  All of these have been in linux-next for a long time, with no reported
  issues"

* tag 'char-misc-4.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (155 commits)
  char: lp: use true or false for boolean values
  android: binder: use VM_ALLOC to get vm area
  android: binder: Use true and false for boolean values
  lkdtm: fix handle_irq_event symbol for INT_HW_IRQ_EN
  EISA: Delete error message for a failed memory allocation in eisa_probe()
  EISA: Whitespace cleanup
  misc: remove AVR32 dependencies
  virt: vbox: Add error mapping for VERR_INVALID_NAME and VERR_NO_MORE_FILES
  soundwire: Fix a signedness bug
  uio_hv_generic: fix new type mismatch warnings
  uio_hv_generic: fix type mismatch warnings
  auxdisplay: img-ascii-lcd: add missing MODULE_DESCRIPTION/AUTHOR/LICENSE
  uio_hv_generic: add rescind support
  uio_hv_generic: check that host supports monitor page
  uio_hv_generic: create send and receive buffers
  uio: document uio_hv_generic regions
  doc: fix documentation about uio_hv_generic
  vmbus: add monitor_id and subchannel_id to sysfs per channel
  vmbus: fix ABI documentation
  uio_hv_generic: use ISR callback method
  ...
2018-02-01 10:31:17 -08:00
Linus Torvalds 47fcc0360c Driver Core updates for 4.16-rc1
Here is the set of "big" driver core patches for 4.16-rc1.
 
 The majority of the work here is in the firmware subsystem, with reworks
 to try to attempt to make the code easier to handle in the long run, but
 no functional change.  There's also some tree-wide sysfs attribute
 fixups with lots of acks from the various subsystem maintainers, as well
 as a handful of other normal fixes and changes.
 
 And finally, some license cleanups for the driver core and sysfs code.
 
 All have been in linux-next for a while with no reported issues.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'driver-core-4.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

Pull driver core updates from Greg KH:
 "Here is the set of "big" driver core patches for 4.16-rc1.

  The majority of the work here is in the firmware subsystem, with
  reworks to try to attempt to make the code easier to handle in the
  long run, but no functional change. There's also some tree-wide sysfs
  attribute fixups with lots of acks from the various subsystem
  maintainers, as well as a handful of other normal fixes and changes.

  And finally, some license cleanups for the driver core and sysfs code.

  All have been in linux-next for a while with no reported issues"

* tag 'driver-core-4.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (48 commits)
  device property: Define type of PROPERTY_ENRTY_*() macros
  device property: Reuse property_entry_free_data()
  device property: Move property_entry_free_data() upper
  firmware: Fix up docs referring to FIRMWARE_IN_KERNEL
  firmware: Drop FIRMWARE_IN_KERNEL Kconfig option
  USB: serial: keyspan: Drop firmware Kconfig options
  sysfs: remove DEBUG defines
  sysfs: use SPDX identifiers
  drivers: base: add coredump driver ops
  sysfs: add attribute specification for /sysfs/devices/.../coredump
  test_firmware: fix missing unlock on error in config_num_requests_store()
  test_firmware: make local symbol test_fw_config static
  sysfs: turn WARN() into pr_warn()
  firmware: Fix a typo in fallback-mechanisms.rst
  treewide: Use DEVICE_ATTR_WO
  treewide: Use DEVICE_ATTR_RO
  treewide: Use DEVICE_ATTR_RW
  sysfs.h: Use octal permissions
  component: add debugfs support
  bus: simple-pm-bus: convert bool SIMPLE_PM_BUS to tristate
  ...
2018-02-01 10:00:28 -08:00
Linus Torvalds a103950e0d Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
Pull crypto updates from Herbert Xu:
 "API:
   - Enforce the setting of keys for keyed aead/hash/skcipher
     algorithms.
   - Add multibuf speed tests in tcrypt.

  Algorithms:
   - Improve performance of sha3-generic.
   - Add native sha512 support on arm64.
   - Add v8.2 Crypto Extentions version of sha3/sm3 on arm64.
   - Avoid hmac nesting by requiring underlying algorithm to be unkeyed.
   - Add cryptd_max_cpu_qlen module parameter to cryptd.

  Drivers:
   - Add support for EIP97 engine in inside-secure.
   - Add inline IPsec support to chelsio.
   - Add RevB core support to crypto4xx.
   - Fix AEAD ICV check in crypto4xx.
   - Add stm32 crypto driver.
   - Add support for BCM63xx platforms in bcm2835 and remove bcm63xx.
   - Add Derived Key Protocol (DKP) support in caam.
   - Add Samsung Exynos True RNG driver.
   - Add support for Exynos5250+ SoCs in exynos PRNG driver"

* 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (166 commits)
  crypto: picoxcell - Fix error handling in spacc_probe()
  crypto: arm64/sha512 - fix/improve new v8.2 Crypto Extensions code
  crypto: arm64/sm3 - new v8.2 Crypto Extensions implementation
  crypto: arm64/sha3 - new v8.2 Crypto Extensions implementation
  crypto: testmgr - add new testcases for sha3
  crypto: sha3-generic - export init/update/final routines
  crypto: sha3-generic - simplify code
  crypto: sha3-generic - rewrite KECCAK transform to help the compiler optimize
  crypto: sha3-generic - fixes for alignment and big endian operation
  crypto: aesni - handle zero length dst buffer
  crypto: artpec6 - remove select on non-existing CRYPTO_SHA384
  hwrng: bcm2835 - Remove redundant dev_err call in bcm2835_rng_probe()
  crypto: stm32 - remove redundant dev_err call in stm32_cryp_probe()
  crypto: axis - remove unnecessary platform_get_resource() error check
  crypto: testmgr - test misuse of result in ahash
  crypto: inside-secure - make function safexcel_try_push_requests static
  crypto: aes-generic - fix aes-generic regression on powerpc
  crypto: chelsio - Fix indentation warning
  crypto: arm64/sha1-ce - get rid of literal pool
  crypto: arm64/sha2-ce - move the round constant table to .rodata section
  ...
2018-01-31 14:22:45 -08:00
Linus Torvalds ae0cb7be35 Merge branch 'next-tpm' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security
Pull tpm updates from James Morris:

 - reduce polling delays in tpm_tis

 - support retrieving TPM 2.0 Event Log through EFI before
   ExitBootServices

 - replace tpm-rng.c with a hwrng device managed by the driver for each
   TPM device

 - TPM resource manager synthesizes TPM_RC_COMMAND_CODE response instead
   of returning -EINVAL for unknown TPM commands. This makes user space
   more sound.

 - CLKRUN fixes:

    * Keep #CLKRUN disable through the entier TPM command/response flow

    * Check whether #CLKRUN is enabled before disabling and enabling it
      again because enabling it breaks PS/2 devices on a system where it
      is disabled

* 'next-tpm' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security:
  tpm: remove unused variables
  tpm: remove unused data fields from I2C and OF device ID tables
  tpm: only attempt to disable the LPC CLKRUN if is already enabled
  tpm: follow coding style for variable declaration in tpm_tis_core_init()
  tpm: delete the TPM_TIS_CLK_ENABLE flag
  tpm: Update MAINTAINERS for Jason Gunthorpe
  tpm: Keep CLKRUN enabled throughout the duration of transmit_cmd()
  tpm_tis: Move ilb_base_addr to tpm_tis_data
  tpm2-cmd: allow more attempts for selftest execution
  tpm: return a TPM_RC_COMMAND_CODE response if command is not implemented
  tpm: Move Linux RNG connection to hwrng
  tpm: use struct tpm_chip for tpm_chip_find_get()
  tpm: parse TPM event logs based on EFI table
  efi: call get_event_log before ExitBootServices
  tpm: add event log format version
  tpm: rename event log provider files
  tpm: move tpm_eventlog.h outside of drivers folder
  tpm: use tpm_msleep() value as max delay
  tpm: reduce tpm polling delay in tpm_tis_core
  tpm: move wait_for_tpm_stat() to respective driver files
2018-01-31 13:12:31 -08:00
Linus Torvalds 4c6790c49a Small fixes for various things, been sitting in next for a
while (some a long time).
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Merge tag 'for-linus-4.16-1' of git://github.com/cminyard/linux-ipmi

Pull IPMI updates from Corey Minyard:
 "Small fixes for various things, been sitting in next for a while (some
  a long time)"

* tag 'for-linus-4.16-1' of git://github.com/cminyard/linux-ipmi:
  ipmi_ssif: Remove duplicate NULL check
  ipmi/powernv: Fix error return code in ipmi_powernv_probe()
  ipmi: use dynamic memory for DMI driver override
  ipmi/ipmi_powernv: remove outdated todo in powernv IPMI driver
  ipmi: Clear smi_info->thread to prevent use-after-free during module unload
  ipmi: use correct string length
  ipmi_si: Fix error handling of platform device
  ipmi watchdog: fix typo in parameter description
  ipmi_si_platform: Fix typo in parameter description
2018-01-31 12:58:15 -08:00
Linus Torvalds 168fe32a07 Merge branch 'misc.poll' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull poll annotations from Al Viro:
 "This introduces a __bitwise type for POLL### bitmap, and propagates
  the annotations through the tree. Most of that stuff is as simple as
  'make ->poll() instances return __poll_t and do the same to local
  variables used to hold the future return value'.

  Some of the obvious brainos found in process are fixed (e.g. POLLIN
  misspelled as POLL_IN). At that point the amount of sparse warnings is
  low and most of them are for genuine bugs - e.g. ->poll() instance
  deciding to return -EINVAL instead of a bitmap. I hadn't touched those
  in this series - it's large enough as it is.

  Another problem it has caught was eventpoll() ABI mess; select.c and
  eventpoll.c assumed that corresponding POLL### and EPOLL### were
  equal. That's true for some, but not all of them - EPOLL### are
  arch-independent, but POLL### are not.

  The last commit in this series separates userland POLL### values from
  the (now arch-independent) kernel-side ones, converting between them
  in the few places where they are copied to/from userland. AFAICS, this
  is the least disruptive fix preserving poll(2) ABI and making epoll()
  work on all architectures.

  As it is, it's simply broken on sparc - try to give it EPOLLWRNORM and
  it will trigger only on what would've triggered EPOLLWRBAND on other
  architectures. EPOLLWRBAND and EPOLLRDHUP, OTOH, are never triggered
  at all on sparc. With this patch they should work consistently on all
  architectures"

* 'misc.poll' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (37 commits)
  make kernel-side POLL... arch-independent
  eventpoll: no need to mask the result of epi_item_poll() again
  eventpoll: constify struct epoll_event pointers
  debugging printk in sg_poll() uses %x to print POLL... bitmap
  annotate poll(2) guts
  9p: untangle ->poll() mess
  ->si_band gets POLL... bitmap stored into a user-visible long field
  ring_buffer_poll_wait() return value used as return value of ->poll()
  the rest of drivers/*: annotate ->poll() instances
  media: annotate ->poll() instances
  fs: annotate ->poll() instances
  ipc, kernel, mm: annotate ->poll() instances
  net: annotate ->poll() instances
  apparmor: annotate ->poll() instances
  tomoyo: annotate ->poll() instances
  sound: annotate ->poll() instances
  acpi: annotate ->poll() instances
  crypto: annotate ->poll() instances
  block: annotate ->poll() instances
  x86: annotate ->poll() instances
  ...
2018-01-30 17:58:07 -08:00
weiyongjun \(A\) c4fc5d6d0b hwrng: bcm2835 - Remove redundant dev_err call in bcm2835_rng_probe()
There is a error message within devm_ioremap_resource
already, so remove the dev_err call to avoid redundant
error message.

Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2018-01-26 01:10:31 +11:00
Gustavo A. R. Silva 9ff6576e12 char: lp: use true or false for boolean values
Assign true or false to boolean variables instead of an integer value.

This issue was detected with the help of Coccinelle.

Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-01-25 10:56:02 +01:00
Andy Shevchenko e45af3d372 ipmi_ssif: Remove duplicate NULL check
Since i2c_unregister_device() became NULL-aware we may remove duplicate
NULL check.

Cc: Corey Minyard <minyard@acm.org>
Cc: openipmi-developer@lists.sourceforge.net
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Corey Minyard <cminyard@mvista.com>
2018-01-22 08:10:38 -06:00
Wei Yongjun e749d328b0 ipmi/powernv: Fix error return code in ipmi_powernv_probe()
Fix to return a negative error code from the request_irq() error
handling case instead of 0, as done elsewhere in this function.

Fixes: dce143c338 ("ipmi/powernv: Convert to irq event interface")
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Reviewed-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: Corey Minyard <cminyard@mvista.com>
2018-01-22 08:10:37 -06:00
John Garry 5516e21a1e ipmi: use dynamic memory for DMI driver override
Currently a crash can be seen if we reach the "err"
label in dmi_add_platform_ipmi(), calling
platform_device_put(), like here:
[    7.270584]  (null): ipmi:dmi: Unable to add resources: -16
[    7.330229] ------------[ cut here ]------------
[    7.334889] kernel BUG at mm/slub.c:3894!
[    7.338936] Internal error: Oops - BUG: 0 [#1] PREEMPT SMP
[    7.344475] Modules linked in:
[    7.347556] CPU: 1 PID: 1 Comm: swapper/0 Not tainted 4.15.0-rc2-00004-gbe9cb7b-dirty #114
[    7.355907] Hardware name: Huawei Taishan 2280 /D05, BIOS Hisilicon D05 IT17 Nemo 2.0 RC0 11/29/2017
[    7.365137] task: 00000000c211f6d3 task.stack: 00000000f276e9af
[    7.371116] pstate: 60000005 (nZCv daif -PAN -UAO)
[    7.375957] pc : kfree+0x194/0x1b4
[    7.379389] lr : platform_device_release+0xcc/0xd8
[    7.384225] sp : ffff0000092dba90
[    7.387567] x29: ffff0000092dba90 x28: ffff000008a83000
[    7.392933] x27: ffff0000092dbc10 x26: 00000000000000e6
[    7.398297] x25: 0000000000000003 x24: ffff0000085b51e8
[    7.403662] x23: 0000000000000100 x22: ffff7e0000234cc0
[    7.409027] x21: ffff000008af3660 x20: ffff8017d21acc10
[    7.414392] x19: ffff8017d21acc00 x18: 0000000000000002
[    7.419757] x17: 0000000000000001 x16: 0000000000000008
[    7.425121] x15: 0000000000000001 x14: 6666666678303d65
[    7.430486] x13: 6469727265766f5f x12: 7265766972642e76
[    7.435850] x11: 6564703e2d617020 x10: 6530326435373638
[    7.441215] x9 : 3030303030303030 x8 : 3d76656420657361
[    7.446580] x7 : ffff000008f59df8 x6 : ffff8017fbe0ea50
[    7.451945] x5 : 0000000000000000 x4 : 0000000000000000
[    7.457309] x3 : ffffffffffffffff x2 : 0000000000000000
[    7.462674] x1 : 0fffc00000000800 x0 : ffff7e0000234ce0
[    7.468039] Process swapper/0 (pid: 1, stack limit = 0x00000000f276e9af)
[    7.474809] Call trace:
[    7.477272]  kfree+0x194/0x1b4
[    7.480351]  platform_device_release+0xcc/0xd8
[    7.484837]  device_release+0x34/0x90
[    7.488531]  kobject_put+0x70/0xcc
[    7.491961]  put_device+0x14/0x1c
[    7.495304]  platform_device_put+0x14/0x1c
[    7.499439]  dmi_add_platform_ipmi+0x348/0x3ac
[    7.503923]  scan_for_dmi_ipmi+0xfc/0x10c
[    7.507970]  do_one_initcall+0x38/0x124
[    7.511840]  kernel_init_freeable+0x188/0x228
[    7.516238]  kernel_init+0x10/0x100
[    7.519756]  ret_from_fork+0x10/0x18
[    7.523362] Code: f94002c0 37780080 f94012c0 37000040 (d4210000)
[    7.529552] ---[ end trace 11750e4787deef9e ]---
[    7.534228] Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000b
[    7.534228]

This is because when the device is released in
platform_device_release(), we try to free
pdev.driver_override. This is a const string, hence
the crash.
Fix by using dynamic memory for pdev->driver_override.

Signed-off-by: John Garry <john.garry@huawei.com>
[Removed the free of driver_override from ipmi_si_remove_by_dev().  The
 free is done in platform_device_release(), and would result in a double
 free, and ipmi_si_remove_by_dev() is called by non-platform devices.]
Signed-off-by: Corey Minyard <cminyard@mvista.com>
Cc: <stable@vger.kernel.org> # 4.14+
2018-01-22 08:07:54 -06:00
Martin Kaiser cd0bb67f21 hwrng: imx-rngc - simplify the power management definitions
Use the SIMPLE_DEV_PM_OPS() macro instead of populating a struct
dev_pm_ops directly. The suspend and resume functions will now be used
for both hibernation and suspend to ram.

If power management is disabled, SIMPLE_DEV_PM_OPS() evaluates to
nothing, The two functions won't be used and won't be included in the
kernel. Mark them as __maybe_unused to clarify that this is intended
behaviour.

With these modifications in place, we don't need the #ifdefs for power
management any more.

Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2018-01-18 22:52:30 +11:00
weiyongjun \(A\) 2273f42df1 hwrng: exynos - remove redundant dev_err call in exynos_trng_probe()
There is a error message within devm_ioremap_resource
already, so remove the dev_err call to avoid redundant
error message.

Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org>
Acked-by: Łukasz Stelmach <l.stelmach@samsung.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2018-01-18 22:52:26 +11:00
Dan Carpenter a8bc71d496 hwrng: exynos - Signedness bug in exynos_trng_do_read()
"val" needs to be signed for the error handling to work.

Fixes: 6cd225cc5d ("hwrng: exynos - add Samsung Exynos True RNG driver")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org>
Acked-by: Łukasz Stelmach <l.stelmach@samsung.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2018-01-18 22:52:26 +11:00
Sean Wang 4565da7c39 hwrng: mediatek - Setup default RNG quality
When hw_random device's quality is non-zero, it will automatically fill
the kernel's entropy pool at boot.  For the purpose, one conservative
quality value is being picked up as the default value.

Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2018-01-18 22:52:25 +11:00
Jeremy Kerr 37c46ca6ee ipmi/ipmi_powernv: remove outdated todo in powernv IPMI driver
Since the IPMI core now queries device IDs dynamically, we no longer
need this todo for implementing this in the powernv driver.

Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-by: Corey Minyard <cminyard@mvista.com>
2018-01-16 16:08:44 -06:00
Masamitsu Yamazaki bd1c06a4f5 ipmi: Clear smi_info->thread to prevent use-after-free during module unload
During code inspection, I found an use-after-free possibility during unloading
ipmi_si in the polling mode.

If start_new_msg() is called after kthread_stop(), the function will try to
wake up non-existing kthread using the dangling pointer.

Possible scenario is when a new internal message is generated after
ipmi_unregister_smi()[*1] and remains after stop_timer_and_thread()
in clenaup_one_si() [*2].
Use-after-free could occur as follows depending on BMC replies.

  cleanup_one_si
    => ipmi_unregister_smi
       [*1]
    => stop_timer_and_thread
       => kthread_stop(smi_info->thread)
       [*2]
    => poll
       => smi_event_handler
          => start_new_msg
             => if (smi_info->thread)
                    wake_up_process(smi_info->thread) <== use-after-free!!

Although currently it seems no such message is generated in the polling mode,
some changes might introduce that in thefuture. For example in the interrupt
mode, disable_si_irq() does that at [*2].

So let's prevent such a critical issue possibility now.

Signed-off-by: Yamazaki Masamitsu <m-yamazaki@ah.jp.nec.com>
Signed-off-by: Corey Minyard <cminyard@mvista.com>
2018-01-15 18:34:34 -06:00
Sinan Kaya 067ddab544 agp: sworks: Deprecate pci_get_bus_and_slot()
pci_get_bus_and_slot() is restrictive such that it assumes domain=0 as
where a PCI device is present. This restricts the device drivers to be
reused for other domain numbers.

Getting ready to remove pci_get_bus_and_slot() function in favor of
pci_get_domain_bus_and_slot().

Replace pci_get_bus_and_slot() with pci_get_domain_bus_and_slot()
and extract the domain number from struct pci_dev.

Signed-off-by: Sinan Kaya <okaya@codeaurora.org>
Signed-off-by: Bjorn Helgaas <helgaas@kernel.org>
2018-01-11 17:25:15 -06:00
Sinan Kaya 84f8cbf748 agp: nvidia: Deprecate pci_get_bus_and_slot()
pci_get_bus_and_slot() is restrictive such that it assumes domain=0 as
where a PCI device is present. This restricts the device drivers to be
reused for other domain numbers.

Getting ready to remove pci_get_bus_and_slot() function in favor of
pci_get_domain_bus_and_slot().

Replace pci_get_bus_and_slot() with pci_get_domain_bus_and_slot()
and extract the domain number from struct pci_dev.

Signed-off-by: Sinan Kaya <okaya@codeaurora.org>
Signed-off-by: Bjorn Helgaas <helgaas@kernel.org>
2018-01-11 17:23:50 -06:00
Rob Herring 74d83a5d74 char: xillybus: remove direct dependency on DT functions
Drivers generally should not need to depend directly on OF_ADDRESS or
OF_IRQ. Convert xillybus to use the preferred platform_get_resource() and
platform_get_irq() functions to remove this dependency.

Cc: Eli Billauer <eli.billauer@gmail.com>
Signed-off-by: Rob Herring <robh@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-01-09 17:59:49 +01:00
Joe Perches c828a89203 treewide: Use DEVICE_ATTR_RO
Convert DEVICE_ATTR uses to DEVICE_ATTR_RO where possible.

Done with perl script:

$ git grep -w --name-only DEVICE_ATTR | \
  xargs perl -i -e 'local $/; while (<>) { s/\bDEVICE_ATTR\s*\(\s*(\w+)\s*,\s*\(?(?:\s*S_IRUGO\s*|\s*0444\s*)\)?\s*,\s*\1_show\s*,\s*NULL\s*\)/DEVICE_ATTR_RO(\1)/g; print;}'

Signed-off-by: Joe Perches <joe@perches.com>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Robert Jarzmik <robert.jarzmik@free.fr>
Acked-by: Sagi Grimberg <sagi@grimberg.me>
Acked-by: Zhang Rui <rui.zhang@intel.com>
Acked-by: Harald Freudenberger <freude@linux.vnet.ibm.com>
Acked-by: Jani Nikula <jani.nikula@intel.com>
Acked-by: Corey Minyard <cminyard@mvista.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-01-09 16:34:34 +01:00
Xiongfeng Wang 1b4254cee0 ipmi: use correct string length
gcc-8 reports

drivers/char/ipmi/ipmi_msghandler.c: In function
'panic_op_write_handler':
./include/linux/string.h:245:9: warning: '__builtin_strncpy' specified
bound 16 equals destination size [-Wstringop-truncation]

drivers/char/ipmi/ipmi_watchdog.c: In function 'set_param_str':
./include/linux/string.h:245:9: warning: '__builtin_strncpy' specified
bound 16 equals destination size [-Wstringop-truncation]

We need one less byte or call strlcpy() to make it a nul-terminated
string.

Signed-off-by: Xiongfeng Wang <xiongfeng.wang@linaro.org>
Signed-off-by: Corey Minyard <cminyard@mvista.com>
2018-01-08 20:02:47 -06:00
Arnd Bergmann 68021bf473 tpm: remove unused variables
The CLKRUN fix caused a few harmless compile-time warnings:

drivers/char/tpm/tpm_tis.c: In function 'tpm_tis_pnp_remove':
drivers/char/tpm/tpm_tis.c:274:23: error: unused variable 'priv' [-Werror=unused-variable]
drivers/char/tpm/tpm_tis.c: In function 'tpm_tis_plat_remove':
drivers/char/tpm/tpm_tis.c:324:23: error: unused variable 'priv' [-Werror=unused-variable]

This removes the variables that have now become unused.

Fixes: 6d0866cbc2d3 ("tpm: Keep CLKRUN enabled throughout the duration of transmit_cmd()")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Reviewed-by: James Morris <jmorris@namei.org>
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
2018-01-08 12:58:54 +02:00
Javier Martinez Canillas b4f20826de tpm: remove unused data fields from I2C and OF device ID tables
The data field for the entries in the device tables are set but not used.

Signed-off-by: Javier Martinez Canillas <javierm@redhat.com>
Reviewed-by: Jason Gunthorpe <jgg@ziepe.ca>
Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
2018-01-08 12:58:39 +02:00
Javier Martinez Canillas 6c9f0ce0df tpm: only attempt to disable the LPC CLKRUN if is already enabled
Commit 5e572cab92 ("tpm: Enable CLKRUN protocol for Braswell systems")
added logic in the TPM TIS driver to disable the Low Pin Count CLKRUN
signal during TPM transactions.

Unfortunately this breaks other devices that are attached to the LPC bus
like for example PS/2 mouse and keyboards.

One flaw with the logic is that it assumes that the CLKRUN is always
enabled, and so it unconditionally enables it after a TPM transaction.

But it could be that the CLKRUN# signal was already disabled in the LPC
bus and so after the driver probes, CLKRUN_EN will remain enabled which
may break other devices that are attached to the LPC bus but don't have
support for the CLKRUN protocol.

Fixes: 5e572cab92 ("tpm: Enable CLKRUN protocol for Braswell systems")
Signed-off-by: Javier Martinez Canillas <javierm@redhat.com>
Tested-by: James Ettle <james@ettle.org.uk>
Tested-by: Jeffery Miller <jmiller@neverware.com>
Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Tested-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
2018-01-08 12:58:39 +02:00
Javier Martinez Canillas 5fc0bead78 tpm: follow coding style for variable declaration in tpm_tis_core_init()
The coding style says "use just one data declaration per line (no commas
for multiple data declarations)" so follow this convention.

Suggested-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Signed-off-by: Javier Martinez Canillas <javierm@redhat.com>
Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Tested-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
2018-01-08 12:58:39 +02:00
Javier Martinez Canillas 764325add6 tpm: delete the TPM_TIS_CLK_ENABLE flag
This flag is only used to warn if CLKRUN_EN wasn't disabled on Braswell
systems, but the only way this can happen is if the code is not correct.

So it's an unnecessary check that just makes the code harder to read.

Suggested-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Signed-off-by: Javier Martinez Canillas <javierm@redhat.com>
Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Tested-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
2018-01-08 12:58:38 +02:00
Azhar Shaikh b3e958ce4c tpm: Keep CLKRUN enabled throughout the duration of transmit_cmd()
Commit 5e572cab92 ("tpm: Enable CLKRUN protocol for Braswell
systems") disabled CLKRUN protocol during TPM transactions and re-enabled
once the transaction is completed. But there were still some corner cases
observed where, reading of TPM header failed for savestate command
while going to suspend, which resulted in suspend failure.
To fix this issue keep the CLKRUN protocol disabled for the entire
duration of a single TPM command and not disabling and re-enabling
again for every TPM transaction. For the other TPM accesses outside
TPM command flow, add a higher level of disabling and re-enabling
the CLKRUN protocol, instead of doing for every TPM transaction.

Fixes: 5e572cab92 ("tpm: Enable CLKRUN protocol for Braswell systems")
Signed-off-by: Azhar Shaikh <azhar.shaikh@intel.com>
Reviewed-by: Jarkko Sakkinen  <jarkko.sakkinen@linux.intel.com>
Tested-by: Jarkko Sakkinen  <jarkko.sakkinen@linux.intel.com>
Signed-off-by: Jarkko Sakkinen  <jarkko.sakkinen@linux.intel.com>
2018-01-08 12:58:38 +02:00
Azhar Shaikh c382babccb tpm_tis: Move ilb_base_addr to tpm_tis_data
Move static variable ilb_base_addr to tpm_tis_data.

Cc: stable@vger.kernel.org
Signed-off-by: Azhar Shaikh <azhar.shaikh@intel.com>
Reviewed-by: Jarkko Sakkinen  <jarkko.sakkinen@linux.intel.com>
Tested-by: Jarkko Sakkinen  <jarkko.sakkinen@linux.intel.com>
Signed-off-by: Jarkko Sakkinen  <jarkko.sakkinen@linux.intel.com>
2018-01-08 12:58:37 +02:00
Alexander.Steffen@infineon.com 0b66f2a05a tpm2-cmd: allow more attempts for selftest execution
Previously, if the last attempt to execute the selftest command failed with
RC_TESTING, there was still a call to tpm_msleep, even though no further
attempt would be made. This causes an unnecessary delay, therefore ensure
that if the last attempt fails the function is left immediately.

Also, instead of ensuring that the cumulated runtime of all attempts is
larger than the command duration for TPM2_SelfTest, ensure that there is at
least one attempt for which the delay is larger than the expected command
duration. This allows slow TPMs to execute all their tests in the
background, without slowing down faster TPMs that have finished their tests
earlier. If tests are still not finished even with this long delay, then
something is broken and the TPM is not used.

Fixes: 125a221054 ("tpm: React correctly to RC_TESTING from TPM 2.0 self
tests")

Signed-off-by: Alexander Steffen <Alexander.Steffen@infineon.com>
Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Tested-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
2018-01-08 12:58:37 +02:00
Javier Martinez Canillas 095531f891 tpm: return a TPM_RC_COMMAND_CODE response if command is not implemented
According to the TPM Library Specification, a TPM device must do a command
header validation before processing and return a TPM_RC_COMMAND_CODE code
if the command is not implemented.

So user-space will expect to handle that response as an error. But if the
in-kernel resource manager is used (/dev/tpmrm?), an -EINVAL errno code is
returned instead if the command isn't implemented. This confuses userspace
since it doesn't expect that error value.

This also isn't consistent with the behavior when not using TPM spaces and
accessing the TPM directly (/dev/tpm?). In this case, the command is sent
to the TPM even when not implemented and the TPM responds with an error.

Instead of returning an -EINVAL errno code when the tpm_validate_command()
function fails, synthesize a TPM command response so user-space can get a
TPM_RC_COMMAND_CODE as expected when a chip doesn't implement the command.

The TPM only sets 12 of the 32 bits in the TPM_RC response, so the TSS and
TAB specifications define that higher layers in the stack should use some
of the unused 20 bits to specify from which level of the stack the error
is coming from.

Since the TPM_RC_COMMAND_CODE response code is sent by the kernel resource
manager, set the error level to the TAB/RM layer so user-space is aware of
this.

Suggested-by: Jason Gunthorpe <jgg@ziepe.ca>
Signed-off-by: Javier Martinez Canillas <javierm@redhat.com>
Reviewed-by: William Roberts <william.c.roberts@intel.com>
Reviewed-by: Philip Tricca <philip.b.tricca@intel.com>
Reviewed-by: Jarkko Sakkinen  <jarkko.sakkinen@linux.intel.com>
Tested-by: Jarkko Sakkinen  <jarkko.sakkinen@linux.intel.com>
Signed-off-by: Jarkko Sakkinen  <jarkko.sakkinen@linux.intel.com>
2018-01-08 12:58:36 +02:00
Jason Gunthorpe 6e592a065d tpm: Move Linux RNG connection to hwrng
The tpm-rng.c approach is completely inconsistent with how the kernel
handles hotplug. Instead manage a hwrng device for each TPM. This will
cause the kernel to read entropy from the TPM when it is plugged in, and
allow access to the TPM rng via /dev/hwrng.

Signed-off-by: Jason Gunthorpe <jgg@ziepe.ca>
Tested-by: PrasannaKumar Muralidharan <prasannatsmkumar@gmail.com>
Tested-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
2018-01-08 12:58:36 +02:00
Jarkko Sakkinen aad887f664 tpm: use struct tpm_chip for tpm_chip_find_get()
Device number (the character device index) is not a stable identifier
for a TPM chip. That is the reason why every call site passes
TPM_ANY_NUM to tpm_chip_find_get().

This commit changes the API in a way that instead a struct tpm_chip
instance is given and NULL means the default chip. In addition, this
commit refines the documentation to be up to date with the
implementation.

Suggested-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com> (@chip_num -> @chip part)
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Reviewed-by: Jason Gunthorpe <jgg@ziepe.ca>
Tested-by: PrasannaKumar Muralidharan <prasannatsmkumar@gmail.com>
2018-01-08 12:58:36 +02:00
Thiebaud Weksteen 58cc1e4faf tpm: parse TPM event logs based on EFI table
If we are not able to retrieve the TPM event logs from the ACPI table,
check the EFI configuration table (Linux-specific GUID).

The format version of the log is now returned by the provider function.

Signed-off-by: Thiebaud Weksteen <tweek@google.com>
Reviewed-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Tested-by: Javier Martinez Canillas <javierm@redhat.com>
Tested-by: Jarkko Sakkinen  <jarkko.sakkinen@linux.intel.com>
Reviewed-by: Jarkko Sakkinen  <jarkko.sakkinen@linux.intel.com>
Signed-off-by: Jarkko Sakkinen  <jarkko.sakkinen@linux.intel.com>
2018-01-08 12:58:35 +02:00
Thiebaud Weksteen 67cb8e113e tpm: rename event log provider files
Rename the current TPM Event Log provider files (ACPI and OF)
for clarity.

Signed-off-by: Thiebaud Weksteen <tweek@google.com>
Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Tested-by: Javier Martinez Canillas <javierm@redhat.com>
Tested-by: Jarkko Sakkinen  <jarkko.sakkinen@linux.intel.com>
Reviewed-by: Jarkko Sakkinen  <jarkko.sakkinen@linux.intel.com>
Signed-off-by: Jarkko Sakkinen  <jarkko.sakkinen@linux.intel.com>
2018-01-08 12:58:34 +02:00
Thiebaud Weksteen fd3ec36637 tpm: move tpm_eventlog.h outside of drivers folder
The generic definitions of data structures in tpm_eventlog.h are
required by other part of the kernel (namely, the EFI stub).

Signed-off-by: Thiebaud Weksteen <tweek@google.com>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Tested-by: Javier Martinez Canillas <javierm@redhat.com>
Tested-by: Jarkko Sakkinen  <jarkko.sakkinen@linux.intel.com>
Reviewed-by: Jarkko Sakkinen  <jarkko.sakkinen@linux.intel.com>
Signed-off-by: Jarkko Sakkinen  <jarkko.sakkinen@linux.intel.com>
2018-01-08 12:58:34 +02:00
Nayna Jain 5ef924d9e2 tpm: use tpm_msleep() value as max delay
Currently, tpm_msleep() uses delay_msec as the minimum value in
usleep_range. However, that is the maximum time we want to wait.
The function is modified to use the delay_msec as the maximum
value, not the minimum value.

After this change, performance on a TPM 1.2 with an 8 byte
burstcount for 1000 extends improved from ~9sec to ~8sec.

Fixes: 3b9af007869("tpm: replace msleep() with usleep_range() in TPM 1.2/
2.0 generic drivers")

Signed-off-by: Nayna Jain <nayna@linux.vnet.ibm.com>
Acked-by: Mimi Zohar <zohar@linux.vnet.ibm.com>
Tested-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
2018-01-08 12:58:33 +02:00
Nayna Jain cf151a9a44 tpm: reduce tpm polling delay in tpm_tis_core
The existing wait_for_tpm_stat() polls for the chip status after
5msec sleep. As per TCG ddwg input, it is expected that tpm might
return status in few usec. So, reducing the delay in polling to
1msec.
Similarly, get_burstcount() function sleeps for 5msec before
retrying for next query to burstcount in a loop. If it takes
lesser time for TPM to return, this 5msec delay is longer than
necessary.

After this change, performance on a TPM 1.2 with an 8 byte
burstcount for 1000 extends improved from ~14sec to ~9sec.

Signed-off-by: Nayna Jain <nayna@linux.vnet.ibm.com>
Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Tested-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
2018-01-08 12:58:33 +02:00
Łukasz Stelmach 6cd225cc5d hwrng: exynos - add Samsung Exynos True RNG driver
Add support for True Random Number Generator found in Samsung Exynos
5250+ SoCs.

Signed-off-by: Łukasz Stelmach <l.stelmach@samsung.com>
Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org>
Acked-by: Philippe Ombredanne <pombredanne@nexb.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2018-01-05 18:43:02 +11:00
Greg Kroah-Hartman b6a09416e8 Merge 4.15-rc6 into char-misc-next
We want the fixes in here as well.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-01-02 14:46:35 +01:00
Gary R Hook 0e4b52942b hwrng: core - Clean up RNG list when last hwrng is unregistered
Commit 142a27f0a7 added support for a "best" RNG, and in doing so
introduced a hang from rmmod/modprobe -r when the last RNG on the list
was unloaded.

When the hwrng list is depleted, return the global variables to their
original state and decrement all references to the object.

Fixes: 142a27f0a7 ("hwrng: core - Reset user selected rng by writing "" to rng_current")
Signed-off-by: Gary R Hook <gary.hook@amd.com>
Reviewed-by: PrasannaKumar Muralidharan <prasannatsmkumar@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2017-12-22 20:03:36 +11:00
Dave Airlie 6a9991bc05 - Fix documentation build issues (Randy, Markus)
- Fix timestamp frequency calculation for perf on CNL (Lionel)
 - New DMC firmware for Skylake (Anusha)
 - GTT flush fixes and other GGTT write track and refactors (Chris)
 - Taint kernel when GPU reset fails (Chris)
 - Display workarounds organization (Lucas)
 - GuC and HuC initialization clean-up and fixes (Michal)
 - Other fixes around GuC submission (Michal)
 - Execlist clean-ups like caching ELSP reg offset and improving log readability (Chri\
 s)
 - Many other improvements on our logs and dumps (Chris)
 - Restore GT performance in headless mode with DMC loaded (Tvrtko)
 - Stop updating legacy fb parameters since FBC is not using anymore (Daniel)
 - More selftest improvements (Chris)
 - Preemption fixes and improvements (Chris)
 - x86/early-quirks improvements for Intel graphics stolen memory. (Joonas, Matthew)
 - Other improvements on Stolen Memory code to be resource centric. (Matthew)
 - Improvements and fixes on fence allocation/release (Chris).
 
 GVT:
 
 - fixes for two coverity scan errors (Colin)
 - mmio switch code refine (Changbin)
 - more virtual display dmabuf fixes (Tina/Gustavo)
 - misc cleanups (Pei)
 - VFIO mdev display dmabuf interface and gvt support (Tina)
 - VFIO mdev opregion support/fixes (Tina/Xiong/Chris)
 - workload scheduling optimization (Changbin)
 - preemption fix and temporal workaround (Zhenyu)
 - and misc fixes after refactor (Chris)
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Merge tag 'drm-intel-next-2017-12-14' of git://anongit.freedesktop.org/drm/drm-intel into drm-next

- Fix documentation build issues (Randy, Markus)
- Fix timestamp frequency calculation for perf on CNL (Lionel)
- New DMC firmware for Skylake (Anusha)
- GTT flush fixes and other GGTT write track and refactors (Chris)
- Taint kernel when GPU reset fails (Chris)
- Display workarounds organization (Lucas)
- GuC and HuC initialization clean-up and fixes (Michal)
- Other fixes around GuC submission (Michal)
- Execlist clean-ups like caching ELSP reg offset and improving log readability (Chri\
s)
- Many other improvements on our logs and dumps (Chris)
- Restore GT performance in headless mode with DMC loaded (Tvrtko)
- Stop updating legacy fb parameters since FBC is not using anymore (Daniel)
- More selftest improvements (Chris)
- Preemption fixes and improvements (Chris)
- x86/early-quirks improvements for Intel graphics stolen memory. (Joonas, Matthew)
- Other improvements on Stolen Memory code to be resource centric. (Matthew)
- Improvements and fixes on fence allocation/release (Chris).

GVT:

- fixes for two coverity scan errors (Colin)
- mmio switch code refine (Changbin)
- more virtual display dmabuf fixes (Tina/Gustavo)
- misc cleanups (Pei)
- VFIO mdev display dmabuf interface and gvt support (Tina)
- VFIO mdev opregion support/fixes (Tina/Xiong/Chris)
- workload scheduling optimization (Changbin)
- preemption fix and temporal workaround (Zhenyu)
- and misc fixes after refactor (Chris)

* tag 'drm-intel-next-2017-12-14' of git://anongit.freedesktop.org/drm/drm-intel: (87 commits)
  drm/i915: Update DRIVER_DATE to 20171214
  drm/i915: properly init lockdep class
  drm/i915: Show engine state when hangcheck detects a stall
  drm/i915: make CS frequency read support missing more obvious
  drm/i915/guc: Extract doorbell verification into a function
  drm/i915/guc: Extract clients allocation to submission_init
  drm/i915/guc: Extract doorbell creation from client allocation
  drm/i915/guc: Call invalidate after changing the vfunc
  drm/i915/guc: Extract guc_init from guc_init_hw
  drm/i915/guc: Move GuC workqueue allocations outside of the mutex
  drm/i915/guc: Move shared data allocation away from submission path
  drm/i915: Unwind i915_gem_init() failure
  drm/i915: Ratelimit request allocation under oom
  drm/i915: Allow fence allocations to fail
  drm/i915: Mark up potential allocation paths within i915_sw_fence as might_sleep
  drm/i915: Don't check #active_requests from i915_gem_wait_for_idle()
  drm/i915/fence: Use rcu to defer freeing of irq_work
  drm/i915: Dump the engine state before declaring wedged from wait_for_engines()
  drm/i915: Bump timeout for wait_for_engines()
  drm/i915: Downgrade misleading "Memory usable" message
  ...
2017-12-21 11:08:30 +10:00
Kees Cook 22ec1a2aea /dev/mem: Add bounce buffer for copy-out
As done for /proc/kcore in

  commit df04abfd18 ("fs/proc/kcore.c: Add bounce buffer for ktext data")

this adds a bounce buffer when reading memory via /dev/mem. This
is needed to allow kernel text memory to be read out when built with
CONFIG_HARDENED_USERCOPY (which refuses to read out kernel text) and
without CONFIG_STRICT_DEVMEM (which would have refused to read any RAM
contents at all).

Since this build configuration isn't common (most systems with
CONFIG_HARDENED_USERCOPY also have CONFIG_STRICT_DEVMEM), this also tries
to inform Kconfig about the recommended settings.

This patch is modified from Brad Spengler/PaX Team's changes to /dev/mem
code in the last public patch of grsecurity/PaX based on my understanding
of the code. Changes or omissions from the original code are mine and
don't reflect the original grsecurity/PaX code.

Reported-by: Michael Holzheu <holzheu@linux.vnet.ibm.com>
Fixes: f5509cc18d ("mm: Hardened usercopy")
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-12-18 15:59:17 +01:00
Nayna Jain 87cdfdd19a tpm: move wait_for_tpm_stat() to respective driver files
The function wait_for_tpm_stat() is currently defined in
tpm-interface file. It is a hardware specific function used
only by tpm_tis and xen-tpmfront, so it is removed from
tpm-interface.c and defined in respective driver files.

Suggested-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Signed-off-by: Nayna Jain <nayna@linux.vnet.ibm.com>
Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Tested-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
2017-12-16 20:27:32 +02:00
Corey Minyard 174134ac76 ipmi_si: Fix error handling of platform device
Cleanup of platform devices created by the IPMI driver was not
being done correctly and could result in a memory leak.  So
create a local boolean to know how to clean up those platform
devices.

Reported-by: David Binderman <dcb314@hotmail.com>
Signed-off-by: Corey Minyard <cminyard@mvista.com>
2017-12-12 07:02:32 -06:00
Wei Yongjun 7195a5a6da ipmi watchdog: fix typo in parameter description
Fix typo in parameter description.

Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: Corey Minyard <cminyard@mvista.com>
2017-12-12 07:00:01 -06:00
Wei Yongjun 180153efd3 ipmi_si_platform: Fix typo in parameter description
Fix typo in parameter description.

Fixes: 95e300c052 ("ipmi: Make the DMI probe into a generic platform probe")
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: Corey Minyard <cminyard@mvista.com>
2017-12-12 07:00:01 -06:00
Matthew Auld b7128ef125 drm/i915: prefer resource_size_t for everything stolen
Keeps things consistent now that we make use of struct resource. This
should keep us covered in case we ever get huge amounts of stolen
memory.

v2: bunch of missing conversions (Chris)

Signed-off-by: Matthew Auld <matthew.auld@intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Paulo Zanoni <paulo.r.zanoni@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20171211151822.20953-10-matthew.auld@intel.com
2017-12-12 12:30:22 +02:00
Matthew Auld 7789422665 drm/i915: make dsm struct resource centric
Now that we are using struct resource to track the stolen region, it is
more convenient if we track dsm in a resource as well.

v2: check range_overflow when writing to 32b registers (Chris)
    pepper in some comments (Chris)
v3: refit i915_stolen_to_dma()
v4: kill ggtt->stolen_size
v5: some more polish

Signed-off-by: Matthew Auld <matthew.auld@intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Paulo Zanoni <paulo.r.zanoni@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20171211151822.20953-6-matthew.auld@intel.com
2017-12-12 12:30:19 +02:00
Linus Torvalds bfb529ee79 The big changes for IPMI that just went in had a few problems. These
have been in for-next for a while, each since about their creation
 date.  I forgot the bugzilla reference on the second one (ipmi_si: Fix
 oops with PCI devices) so I rebased to add that.
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Merge tag 'for-linus-4.15-2' of git://github.com/cminyard/linux-ipmi

Pull IPMI fixes from Corey Minyard.

* tag 'for-linus-4.15-2' of git://github.com/cminyard/linux-ipmi:
  ipmi_si: fix crash on parisc
  ipmi_si: Fix oops with PCI devices
  ipmi: Stop timers before cleaning up the module
2017-12-11 17:01:59 -08:00
Mikulas Patocka 51614b26a0 ipmi_si: fix crash on parisc
This patch fixes ipmi crash on parisc introduced in the kernel 4.15-rc.
The pointer io.io_setup is not initialized and thus it causes crash in
try_smi_init when attempting to call new_smi->io.io_setup.

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Corey Minyard <cminyard@mvista.com>
2017-12-11 07:43:26 -06:00
Corey Minyard 1ac8aa8d05 ipmi_si: Fix oops with PCI devices
When the IPMI PCI code was split out, some code was consolidated for
setting the io_setup field in the io structure.  The PCI code needed
this set before registration to probe register spacing, though, so
restore the old code for that function.

Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=197999
Signed-off-by: Corey Minyard <cminyard@mvista.com>
Tested-by: Meelis Roos <mroos@linux.ee>
2017-12-11 07:42:50 -06:00
Chris Wilson 8516673a99 agp/intel: Flush all chipset writes after updating the GGTT
Before accessing the GGTT we must flush the PTE writes and make them
visible to the chipset, or else the indirect access may end up in the
wrong page. In commit 3497971a71 ("agp/intel: Flush chipset writes
after updating a single PTE"), we noticed corruption of the uploads for
pwrite and for capturing GPU error states, but it was presumed that the
explicit calls to intel_gtt_chipset_flush() were sufficient for the
execbuffer path. However, we have not been flushing the chipset between
the PTE writes and access via the GTT itself.

For simplicity, do the flush after any PTE update rather than try and
batch the flushes on a just-in-time basis.

References: 3497971a71 ("agp/intel: Flush chipset writes after updating a single PTE")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Cc: Mika Kuoppala <mika.kuoppala@intel.com>
Cc: drm-intel-fixes@lists.freedesktop.org
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20171208214616.30147-1-chris@chris-wilson.co.uk
2017-12-11 11:00:40 +00:00
Masamitsu Yamazaki 4f7f5551a7 ipmi: Stop timers before cleaning up the module
System may crash after unloading ipmi_si.ko module
because a timer may remain and fire after the module cleaned up resources.

cleanup_one_si() contains the following processing.

        /*
         * Make sure that interrupts, the timer and the thread are
         * stopped and will not run again.
         */
        if (to_clean->irq_cleanup)
                to_clean->irq_cleanup(to_clean);
        wait_for_timer_and_thread(to_clean);

        /*
         * Timeouts are stopped, now make sure the interrupts are off
         * in the BMC.  Note that timers and CPU interrupts are off,
         * so no need for locks.
         */
        while (to_clean->curr_msg || (to_clean->si_state != SI_NORMAL)) {
                poll(to_clean);
                schedule_timeout_uninterruptible(1);
        }

si_state changes as following in the while loop calling poll(to_clean).

  SI_GETTING_MESSAGES
    => SI_CHECKING_ENABLES
     => SI_SETTING_ENABLES
      => SI_GETTING_EVENTS
       => SI_NORMAL

As written in the code comments above,
timers are expected to stop before the polling loop and not to run again.
But the timer is set again in the following process
when si_state becomes SI_SETTING_ENABLES.

  => poll
     => smi_event_handler
       => handle_transaction_done
          // smi_info->si_state == SI_SETTING_ENABLES
         => start_getting_events
           => start_new_msg
            => smi_mod_timer
              => mod_timer

As a result, before the timer set in start_new_msg() expires,
the polling loop may see si_state becoming SI_NORMAL
and the module clean-up finishes.

For example, hard LOCKUP and panic occurred as following.
smi_timeout was called after smi_event_handler,
kcs_event and hangs at port_inb()
trying to access I/O port after release.

    [exception RIP: port_inb+19]
    RIP: ffffffffc0473053  RSP: ffff88069fdc3d80  RFLAGS: 00000006
    RAX: ffff8806800f8e00  RBX: ffff880682bd9400  RCX: 0000000000000000
    RDX: 0000000000000ca3  RSI: 0000000000000ca3  RDI: ffff8806800f8e40
    RBP: ffff88069fdc3d80   R8: ffffffff81d86dfc   R9: ffffffff81e36426
    R10: 00000000000509f0  R11: 0000000000100000  R12: 0000000000]:000000
    R13: 0000000000000000  R14: 0000000000000246  R15: ffff8806800f8e00
    ORIG_RAX: ffffffffffffffff  CS: 0010  SS: 0000
 --- <NMI exception stack> ---

To fix the problem I defined a flag, timer_can_start,
as member of struct smi_info.
The flag is enabled immediately after initializing the timer
and disabled immediately before waiting for timer deletion.

Fixes: 0cfec916e8 ("ipmi: Start the timer and thread on internal msgs")
Signed-off-by: Yamazaki Masamitsu <m-yamazaki@ah.jp.nec.com>
[Adjusted for recent changes in the driver.]
Signed-off-by: Corey Minyard <cminyard@mvista.com>
2017-12-06 07:13:03 -06:00
Eric Biggers 9f480faec5 crypto: chacha20 - Fix keystream alignment for chacha20_block()
When chacha20_block() outputs the keystream block, it uses 'u32' stores
directly.  However, the callers (crypto/chacha20_generic.c and
drivers/char/random.c) declare the keystream buffer as a 'u8' array,
which is not guaranteed to have the needed alignment.

Fix it by having both callers declare the keystream as a 'u32' array.
For now this is preferable to switching over to the unaligned access
macros because chacha20_block() is only being used in cases where we can
easily control the alignment (stack buffers).

Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2017-11-29 17:33:33 +11:00
Florian Fainelli 0c2616a7d9 hwrng: bcm63xx - Remove since bcm2835-rng takes over
bcm2835-rng is now capable of supporting the BCM63xx hardware, so remove
the driver which duplicates the same functionality.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2017-11-29 16:43:48 +11:00
Florian Fainelli 8705f24f7b hwrng: bcm2835 - Enable BCM2835 RNG to work on BCM63xx platforms
We have now incorporated all necessary functionality for the BCM63xx
platforms to successfully migrate over bcm2835-rng, so add the final
bits: Kconfig selection and proper platform_device device type matching
to keep the same platform device name for registration to work.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2017-11-29 16:43:48 +11:00
Florian Fainelli 6f09359a68 hwrng: bcm2835 - Add Broadcom MIPS I/O accessors
Broadcom MIPS HW is always strapped to match the system-wide endian such
that all I/O access to this RNG block is done with the native CPU
endian, account for that.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2017-11-29 16:43:46 +11:00
Florian Fainelli abd42026ea hwrng: bcm2835 - Abstract I/O accessors
In preparation for allowing BCM63xx to use this driver, we abstract I/O
accessors such that we can easily change those later on.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2017-11-29 16:43:46 +11:00
Florian Fainelli 791af4f490 hwrng: bcm2835 - Manage an optional clock
One of the last steps before bcm63xx-rng can be eliminated is to manage
a clock during hwrng::init and hwrng::cleanup, so fetch it in the probe
function, and manage it during these two steps when valid.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2017-11-29 16:43:45 +11:00
Florian Fainelli 04b154fa86 hwrng: bcm2835 - Rework interrupt masking
The interrupt masking done for Northstart Plus and Northstar (BCM5301X)
is moved from being a function pointer mapped to of_device_id::data into
a proper part of the hwrng::init callback. While at it, we also make the
of_data be a proper structure indicating the platform specifics, since
the day we need to add a second type of platform information, we would
have to do that anyway.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2017-11-29 16:43:45 +11:00
Florian Fainelli 16a4c04b37 hwrng: bcm2835 - Use device managed helpers
Now that we have moved the RNG disabling into a hwrng::cleanup callback,
we can use the device managed registration operation and remove our
remove callback since it won't do anything necessary.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2017-11-29 16:43:44 +11:00
Florian Fainelli ec94bca7be hwrng: bcm2835 - Implementation cleanup callback
We should be disabling the RNG in a hwrng::cleanup callback if we are
not longer the system selected RNG, not wait until the device driver is
removed.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2017-11-29 16:43:44 +11:00
Florian Fainelli a815777553 hwrng: bcm2835 - Move enabling to hwrng::init
We should be moving the enabling of the HWRNG into a hwrng::init
callback since we can be disabled and enabled every time a different
hwrng is selected in the system.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2017-11-29 16:43:43 +11:00
Florian Fainelli b788479f68 hwrng: bcm2835 - Define a driver private context
Instead of making hwrng::priv host the base register address, define a
driver private context, make it per platform device instance and pass it
down the different functions.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2017-11-29 16:43:43 +11:00
Florian Fainelli 21bb0ef43c hwrng: bcm2835 - Obtain base register via resource
In preparation for consolidating bcm63xx-rng into bcm2835-rng, make sure
that we obtain the base register via platform_get_resource() since we
need to support the non-DT enabled MIPS-based BCM63xx DSL SoCs.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2017-11-29 16:43:42 +11:00
Al Viro afc9a42b74 the rest of drivers/*: annotate ->poll() instances
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2017-11-28 11:06:58 -05:00
Arnd Bergmann 9a45048408 lp: support 64-bit time_t user space
Once we get a glibc with 64-bit time_t, the LPSETTIMEOUT ioctl stops
working, since the command number and data structure no longer match.

To work around that, this introduces a new command number LPSETTIMEOUT_NEW
that is used whenever the modified user space evaluates the LPSETTIMEOUT
macro.

The trick we use is a bit convoluted but necessary: we cannot check for
any macros set by the C library in linux/lp.h, because this particular
header can be included before including sys/time.h. However, we can assume
that by the time that LPSETTIMEOUT is seen in the code, the definition
for 'timeval' and 'time_t' has been seen as well, so we can use the
sizeof() operator to determine whether we should use the old or the
new definition. We use the old one not only for traditional 32-bit user
space with 32-bit time_t, but also for all 64-bit architectures and x32,
which always use a 64-bit time_t, the new definition will be used only for
32-bit user space with 64-bit time_t, which also requires a newer kernel.

The compat_ioctl() handler now implements both commands, but has to
use a special case for existing x32 binaries. The native ioctl handler
now implements both command numbers on both 32-bit and 64-bit, though
the latter version use the same interpretation for both.

This is based on an earlier patch from Bamvor.

Cc: Bamvor Jian Zhang <bamv2005@gmail.com>
Link: http://www.spinics.net/lists/y2038/msg01162.html
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-11-28 16:54:00 +01:00
Linus Torvalds 02fc87b117 Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull misc x86 fixes from Ingo Molnar:
 - topology enumeration fixes
 - KASAN fix
 - two entry fixes (not yet the big series related to KASLR)
 - remove obsolete code
 - instruction decoder fix
 - better /dev/mem sanity checks, hopefully working better this time
 - pkeys fixes
 - two ACPI fixes
 - 5-level paging related fixes
 - UMIP fixes that should make application visible faults more debuggable
 - boot fix for weird virtualization environment

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (24 commits)
  x86/decoder: Add new TEST instruction pattern
  x86/PCI: Remove unused HyperTransport interrupt support
  x86/umip: Fix insn_get_code_seg_params()'s return value
  x86/boot/KASLR: Remove unused variable
  x86/entry/64: Add missing irqflags tracing to native_load_gs_index()
  x86/mm/kasan: Don't use vmemmap_populate() to initialize shadow
  x86/entry/64: Fix entry_SYSCALL_64_after_hwframe() IRQ tracing
  x86/pkeys/selftests: Fix protection keys write() warning
  x86/pkeys/selftests: Rename 'si_pkey' to 'siginfo_pkey'
  x86/mpx/selftests: Fix up weird arrays
  x86/pkeys: Update documentation about availability
  x86/umip: Print a warning into the syslog if UMIP-protected instructions are used
  x86/smpboot: Fix __max_logical_packages estimate
  x86/topology: Avoid wasting 128k for package id array
  perf/x86/intel/uncore: Cache logical pkg id in uncore driver
  x86/acpi: Reduce code duplication in mp_override_legacy_irq()
  x86/acpi: Handle SCI interrupts above legacy space gracefully
  x86/boot: Fix boot failure when SMP MP-table is based at 0
  x86/mm: Limit mmap() of /dev/mem to valid physical addresses
  x86/selftests: Add test for mapping placement for 5-level paging
  ...
2017-11-26 14:11:54 -08:00
Kees Cook e99e88a9d2 treewide: setup_timer() -> timer_setup()
This converts all remaining cases of the old setup_timer() API into using
timer_setup(), where the callback argument is the structure already
holding the struct timer_list. These should have no behavioral changes,
since they just change which pointer is passed into the callback with
the same available pointers after conversion. It handles the following
examples, in addition to some other variations.

Casting from unsigned long:

    void my_callback(unsigned long data)
    {
        struct something *ptr = (struct something *)data;
    ...
    }
    ...
    setup_timer(&ptr->my_timer, my_callback, ptr);

and forced object casts:

    void my_callback(struct something *ptr)
    {
    ...
    }
    ...
    setup_timer(&ptr->my_timer, my_callback, (unsigned long)ptr);

become:

    void my_callback(struct timer_list *t)
    {
        struct something *ptr = from_timer(ptr, t, my_timer);
    ...
    }
    ...
    timer_setup(&ptr->my_timer, my_callback, 0);

Direct function assignments:

    void my_callback(unsigned long data)
    {
        struct something *ptr = (struct something *)data;
    ...
    }
    ...
    ptr->my_timer.function = my_callback;

have a temporary cast added, along with converting the args:

    void my_callback(struct timer_list *t)
    {
        struct something *ptr = from_timer(ptr, t, my_timer);
    ...
    }
    ...
    ptr->my_timer.function = (TIMER_FUNC_TYPE)my_callback;

And finally, callbacks without a data assignment:

    void my_callback(unsigned long data)
    {
    ...
    }
    ...
    setup_timer(&ptr->my_timer, my_callback, 0);

have their argument renamed to verify they're unused during conversion:

    void my_callback(struct timer_list *unused)
    {
    ...
    }
    ...
    timer_setup(&ptr->my_timer, my_callback, 0);

The conversion is done with the following Coccinelle script:

spatch --very-quiet --all-includes --include-headers \
	-I ./arch/x86/include -I ./arch/x86/include/generated \
	-I ./include -I ./arch/x86/include/uapi \
	-I ./arch/x86/include/generated/uapi -I ./include/uapi \
	-I ./include/generated/uapi --include ./include/linux/kconfig.h \
	--dir . \
	--cocci-file ~/src/data/timer_setup.cocci

@fix_address_of@
expression e;
@@

 setup_timer(
-&(e)
+&e
 , ...)

// Update any raw setup_timer() usages that have a NULL callback, but
// would otherwise match change_timer_function_usage, since the latter
// will update all function assignments done in the face of a NULL
// function initialization in setup_timer().
@change_timer_function_usage_NULL@
expression _E;
identifier _timer;
type _cast_data;
@@

(
-setup_timer(&_E->_timer, NULL, _E);
+timer_setup(&_E->_timer, NULL, 0);
|
-setup_timer(&_E->_timer, NULL, (_cast_data)_E);
+timer_setup(&_E->_timer, NULL, 0);
|
-setup_timer(&_E._timer, NULL, &_E);
+timer_setup(&_E._timer, NULL, 0);
|
-setup_timer(&_E._timer, NULL, (_cast_data)&_E);
+timer_setup(&_E._timer, NULL, 0);
)

@change_timer_function_usage@
expression _E;
identifier _timer;
struct timer_list _stl;
identifier _callback;
type _cast_func, _cast_data;
@@

(
-setup_timer(&_E->_timer, _callback, _E);
+timer_setup(&_E->_timer, _callback, 0);
|
-setup_timer(&_E->_timer, &_callback, _E);
+timer_setup(&_E->_timer, _callback, 0);
|
-setup_timer(&_E->_timer, _callback, (_cast_data)_E);
+timer_setup(&_E->_timer, _callback, 0);
|
-setup_timer(&_E->_timer, &_callback, (_cast_data)_E);
+timer_setup(&_E->_timer, _callback, 0);
|
-setup_timer(&_E->_timer, (_cast_func)_callback, _E);
+timer_setup(&_E->_timer, _callback, 0);
|
-setup_timer(&_E->_timer, (_cast_func)&_callback, _E);
+timer_setup(&_E->_timer, _callback, 0);
|
-setup_timer(&_E->_timer, (_cast_func)_callback, (_cast_data)_E);
+timer_setup(&_E->_timer, _callback, 0);
|
-setup_timer(&_E->_timer, (_cast_func)&_callback, (_cast_data)_E);
+timer_setup(&_E->_timer, _callback, 0);
|
-setup_timer(&_E._timer, _callback, (_cast_data)_E);
+timer_setup(&_E._timer, _callback, 0);
|
-setup_timer(&_E._timer, _callback, (_cast_data)&_E);
+timer_setup(&_E._timer, _callback, 0);
|
-setup_timer(&_E._timer, &_callback, (_cast_data)_E);
+timer_setup(&_E._timer, _callback, 0);
|
-setup_timer(&_E._timer, &_callback, (_cast_data)&_E);
+timer_setup(&_E._timer, _callback, 0);
|
-setup_timer(&_E._timer, (_cast_func)_callback, (_cast_data)_E);
+timer_setup(&_E._timer, _callback, 0);
|
-setup_timer(&_E._timer, (_cast_func)_callback, (_cast_data)&_E);
+timer_setup(&_E._timer, _callback, 0);
|
-setup_timer(&_E._timer, (_cast_func)&_callback, (_cast_data)_E);
+timer_setup(&_E._timer, _callback, 0);
|
-setup_timer(&_E._timer, (_cast_func)&_callback, (_cast_data)&_E);
+timer_setup(&_E._timer, _callback, 0);
|
 _E->_timer@_stl.function = _callback;
|
 _E->_timer@_stl.function = &_callback;
|
 _E->_timer@_stl.function = (_cast_func)_callback;
|
 _E->_timer@_stl.function = (_cast_func)&_callback;
|
 _E._timer@_stl.function = _callback;
|
 _E._timer@_stl.function = &_callback;
|
 _E._timer@_stl.function = (_cast_func)_callback;
|
 _E._timer@_stl.function = (_cast_func)&_callback;
)

// callback(unsigned long arg)
@change_callback_handle_cast
 depends on change_timer_function_usage@
identifier change_timer_function_usage._callback;
identifier change_timer_function_usage._timer;
type _origtype;
identifier _origarg;
type _handletype;
identifier _handle;
@@

 void _callback(
-_origtype _origarg
+struct timer_list *t
 )
 {
(
	... when != _origarg
	_handletype *_handle =
-(_handletype *)_origarg;
+from_timer(_handle, t, _timer);
	... when != _origarg
|
	... when != _origarg
	_handletype *_handle =
-(void *)_origarg;
+from_timer(_handle, t, _timer);
	... when != _origarg
|
	... when != _origarg
	_handletype *_handle;
	... when != _handle
	_handle =
-(_handletype *)_origarg;
+from_timer(_handle, t, _timer);
	... when != _origarg
|
	... when != _origarg
	_handletype *_handle;
	... when != _handle
	_handle =
-(void *)_origarg;
+from_timer(_handle, t, _timer);
	... when != _origarg
)
 }

// callback(unsigned long arg) without existing variable
@change_callback_handle_cast_no_arg
 depends on change_timer_function_usage &&
                     !change_callback_handle_cast@
identifier change_timer_function_usage._callback;
identifier change_timer_function_usage._timer;
type _origtype;
identifier _origarg;
type _handletype;
@@

 void _callback(
-_origtype _origarg
+struct timer_list *t
 )
 {
+	_handletype *_origarg = from_timer(_origarg, t, _timer);
+
	... when != _origarg
-	(_handletype *)_origarg
+	_origarg
	... when != _origarg
 }

// Avoid already converted callbacks.
@match_callback_converted
 depends on change_timer_function_usage &&
            !change_callback_handle_cast &&
	    !change_callback_handle_cast_no_arg@
identifier change_timer_function_usage._callback;
identifier t;
@@

 void _callback(struct timer_list *t)
 { ... }

// callback(struct something *handle)
@change_callback_handle_arg
 depends on change_timer_function_usage &&
	    !match_callback_converted &&
            !change_callback_handle_cast &&
            !change_callback_handle_cast_no_arg@
identifier change_timer_function_usage._callback;
identifier change_timer_function_usage._timer;
type _handletype;
identifier _handle;
@@

 void _callback(
-_handletype *_handle
+struct timer_list *t
 )
 {
+	_handletype *_handle = from_timer(_handle, t, _timer);
	...
 }

// If change_callback_handle_arg ran on an empty function, remove
// the added handler.
@unchange_callback_handle_arg
 depends on change_timer_function_usage &&
	    change_callback_handle_arg@
identifier change_timer_function_usage._callback;
identifier change_timer_function_usage._timer;
type _handletype;
identifier _handle;
identifier t;
@@

 void _callback(struct timer_list *t)
 {
-	_handletype *_handle = from_timer(_handle, t, _timer);
 }

// We only want to refactor the setup_timer() data argument if we've found
// the matching callback. This undoes changes in change_timer_function_usage.
@unchange_timer_function_usage
 depends on change_timer_function_usage &&
            !change_callback_handle_cast &&
            !change_callback_handle_cast_no_arg &&
	    !change_callback_handle_arg@
expression change_timer_function_usage._E;
identifier change_timer_function_usage._timer;
identifier change_timer_function_usage._callback;
type change_timer_function_usage._cast_data;
@@

(
-timer_setup(&_E->_timer, _callback, 0);
+setup_timer(&_E->_timer, _callback, (_cast_data)_E);
|
-timer_setup(&_E._timer, _callback, 0);
+setup_timer(&_E._timer, _callback, (_cast_data)&_E);
)

// If we fixed a callback from a .function assignment, fix the
// assignment cast now.
@change_timer_function_assignment
 depends on change_timer_function_usage &&
            (change_callback_handle_cast ||
             change_callback_handle_cast_no_arg ||
             change_callback_handle_arg)@
expression change_timer_function_usage._E;
identifier change_timer_function_usage._timer;
identifier change_timer_function_usage._callback;
type _cast_func;
typedef TIMER_FUNC_TYPE;
@@

(
 _E->_timer.function =
-_callback
+(TIMER_FUNC_TYPE)_callback
 ;
|
 _E->_timer.function =
-&_callback
+(TIMER_FUNC_TYPE)_callback
 ;
|
 _E->_timer.function =
-(_cast_func)_callback;
+(TIMER_FUNC_TYPE)_callback
 ;
|
 _E->_timer.function =
-(_cast_func)&_callback
+(TIMER_FUNC_TYPE)_callback
 ;
|
 _E._timer.function =
-_callback
+(TIMER_FUNC_TYPE)_callback
 ;
|
 _E._timer.function =
-&_callback;
+(TIMER_FUNC_TYPE)_callback
 ;
|
 _E._timer.function =
-(_cast_func)_callback
+(TIMER_FUNC_TYPE)_callback
 ;
|
 _E._timer.function =
-(_cast_func)&_callback
+(TIMER_FUNC_TYPE)_callback
 ;
)

// Sometimes timer functions are called directly. Replace matched args.
@change_timer_function_calls
 depends on change_timer_function_usage &&
            (change_callback_handle_cast ||
             change_callback_handle_cast_no_arg ||
             change_callback_handle_arg)@
expression _E;
identifier change_timer_function_usage._timer;
identifier change_timer_function_usage._callback;
type _cast_data;
@@

 _callback(
(
-(_cast_data)_E
+&_E->_timer
|
-(_cast_data)&_E
+&_E._timer
|
-_E
+&_E->_timer
)
 )

// If a timer has been configured without a data argument, it can be
// converted without regard to the callback argument, since it is unused.
@match_timer_function_unused_data@
expression _E;
identifier _timer;
identifier _callback;
@@

(
-setup_timer(&_E->_timer, _callback, 0);
+timer_setup(&_E->_timer, _callback, 0);
|
-setup_timer(&_E->_timer, _callback, 0L);
+timer_setup(&_E->_timer, _callback, 0);
|
-setup_timer(&_E->_timer, _callback, 0UL);
+timer_setup(&_E->_timer, _callback, 0);
|
-setup_timer(&_E._timer, _callback, 0);
+timer_setup(&_E._timer, _callback, 0);
|
-setup_timer(&_E._timer, _callback, 0L);
+timer_setup(&_E._timer, _callback, 0);
|
-setup_timer(&_E._timer, _callback, 0UL);
+timer_setup(&_E._timer, _callback, 0);
|
-setup_timer(&_timer, _callback, 0);
+timer_setup(&_timer, _callback, 0);
|
-setup_timer(&_timer, _callback, 0L);
+timer_setup(&_timer, _callback, 0);
|
-setup_timer(&_timer, _callback, 0UL);
+timer_setup(&_timer, _callback, 0);
|
-setup_timer(_timer, _callback, 0);
+timer_setup(_timer, _callback, 0);
|
-setup_timer(_timer, _callback, 0L);
+timer_setup(_timer, _callback, 0);
|
-setup_timer(_timer, _callback, 0UL);
+timer_setup(_timer, _callback, 0);
)

@change_callback_unused_data
 depends on match_timer_function_unused_data@
identifier match_timer_function_unused_data._callback;
type _origtype;
identifier _origarg;
@@

 void _callback(
-_origtype _origarg
+struct timer_list *unused
 )
 {
	... when != _origarg
 }

Signed-off-by: Kees Cook <keescook@chromium.org>
2017-11-21 15:57:07 -08:00
Kees Cook 24ed960abf treewide: Switch DEFINE_TIMER callbacks to struct timer_list *
This changes all DEFINE_TIMER() callbacks to use a struct timer_list
pointer instead of unsigned long. Since the data argument has already been
removed, none of these callbacks are using their argument currently, so
this renames the argument to "unused".

Done using the following semantic patch:

@match_define_timer@
declarer name DEFINE_TIMER;
identifier _timer, _callback;
@@

 DEFINE_TIMER(_timer, _callback);

@change_callback depends on match_define_timer@
identifier match_define_timer._callback;
type _origtype;
identifier _origarg;
@@

 void
-_callback(_origtype _origarg)
+_callback(struct timer_list *unused)
 { ... }

Signed-off-by: Kees Cook <keescook@chromium.org>
2017-11-21 15:57:05 -08:00
Linus Torvalds 93f30c73ec Merge branch 'misc.compat' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull compat and uaccess updates from Al Viro:

 - {get,put}_compat_sigset() series

 - assorted compat ioctl stuff

 - more set_fs() elimination

 - a few more timespec64 conversions

 - several removals of pointless access_ok() in places where it was
   followed only by non-__ variants of primitives

* 'misc.compat' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (24 commits)
  coredump: call do_unlinkat directly instead of sys_unlink
  fs: expose do_unlinkat for built-in callers
  ext4: take handling of EXT4_IOC_GROUP_ADD into a helper, get rid of set_fs()
  ipmi: get rid of pointless access_ok()
  pi433: sanitize ioctl
  cxlflash: get rid of pointless access_ok()
  mtdchar: get rid of pointless access_ok()
  r128: switch compat ioctls to drm_ioctl_kernel()
  selection: get rid of field-by-field copyin
  VT_RESIZEX: get rid of field-by-field copyin
  i2c compat ioctls: move to ->compat_ioctl()
  sched_rr_get_interval(): move compat to native, get rid of set_fs()
  mips: switch to {get,put}_compat_sigset()
  sparc: switch to {get,put}_compat_sigset()
  s390: switch to {get,put}_compat_sigset()
  ppc: switch to {get,put}_compat_sigset()
  parisc: switch to {get,put}_compat_sigset()
  get_compat_sigset()
  get rid of {get,put}_compat_itimerspec()
  io_getevents: Use timespec64 to represent timeouts
  ...
2017-11-17 11:54:55 -08:00
Linus Torvalds 2bf16b7a73 Char/Misc patches for 4.15-rc1
Here is the big set of char/misc and other driver subsystem patches for
 4.15-rc1.
 
 There are small changes all over here, hyperv driver updates, pcmcia
 driver updates, w1 driver updats, vme driver updates, nvmem driver
 updates, and lots of other little one-off driver updates as well.  The
 shortlog has the full details.
 
 Note, there will be a merge conflict in drivers/misc/lkdtm_core.c when
 merging to your tree as one lkdtm patch came in through the perf tree as
 well as this one.  The resolution is to take the const change that this
 tree provides.
 
 All of these have been in linux-next for quite a while with no reported
 issues.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'char-misc-4.15-rc1' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

Pull char/misc updates from Greg KH:
 "Here is the big set of char/misc and other driver subsystem patches
  for 4.15-rc1.

  There are small changes all over here, hyperv driver updates, pcmcia
  driver updates, w1 driver updats, vme driver updates, nvmem driver
  updates, and lots of other little one-off driver updates as well. The
  shortlog has the full details.

  All of these have been in linux-next for quite a while with no
  reported issues"

* tag 'char-misc-4.15-rc1' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (90 commits)
  VME: Return -EBUSY when DMA list in use
  w1: keep balance of mutex locks and refcnts
  MAINTAINERS: Update VME subsystem tree.
  nvmem: sunxi-sid: add support for A64/H5's SID controller
  nvmem: imx-ocotp: Update module description
  nvmem: imx-ocotp: Enable i.MX7D OTP write support
  nvmem: imx-ocotp: Add i.MX7D timing write clock setup support
  nvmem: imx-ocotp: Move i.MX6 write clock setup to dedicated function
  nvmem: imx-ocotp: Add support for banked OTP addressing
  nvmem: imx-ocotp: Pass parameters via a struct
  nvmem: imx-ocotp: Restrict OTP write to IMX6 processors
  nvmem: uniphier: add UniPhier eFuse driver
  dt-bindings: nvmem: add description for UniPhier eFuse
  nvmem: set nvmem->owner to nvmem->dev->driver->owner if unset
  nvmem: qfprom: fix different address space warnings of sparse
  nvmem: mtk-efuse: fix different address space warnings of sparse
  nvmem: mtk-efuse: use stack for nvmem_config instead of malloc'ing it
  nvmem: imx-iim: use stack for nvmem_config instead of malloc'ing it
  thunderbolt: tb: fix use after free in tb_activate_pcie_devices
  MAINTAINERS: Add git tree for Thunderbolt development
  ...
2017-11-16 09:10:59 -08:00
Craig Bergstrom be62a32044 x86/mm: Limit mmap() of /dev/mem to valid physical addresses
One thing /dev/mem access APIs should verify is that there's no way
that excessively large pfn's can leak into the high bits of the
page table entry.

In particular, if people can use "very large physical page addresses"
through /dev/mem to set the bits past bit 58 - SOFTW4 and permission
key bits and NX bit, that could *really* confuse the kernel.

We had an earlier attempt:

  ce56a86e2a ("x86/mm: Limit mmap() of /dev/mem to valid physical addresses")

... which turned out to be too restrictive (breaking mem=... bootups for example) and
had to be reverted in:

  90edaac627 ("Revert "x86/mm: Limit mmap() of /dev/mem to valid physical addresses"")

This v2 attempt modifies the original patch and makes sure that mmap(/dev/mem)
limits the pfns so that it at least fits in the actual pteval_t architecturally:

 - Make sure mmap_mem() actually validates that the offset fits in phys_addr_t

    ( This may be indirectly true due to some other check, but it's not
      entirely obvious. )

 - Change valid_mmap_phys_addr_range() to just use phys_addr_valid()
   on the top byte

    ( Top byte is sufficient, because mmap_mem() has already checked that
      it cannot wrap. )

 - Add a few comments about what the valid_phys_addr_range() vs.
   valid_mmap_phys_addr_range() difference is.

Signed-off-by: Craig Bergstrom <craigb@google.com>
[ Fixed the checks and added comments. ]
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
[ Collected the discussion and patches into a commit. ]
Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Cc: Fengguang Wu <fengguang.wu@intel.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Hans Verkuil <hans.verkuil@cisco.com>
Cc: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Sander Eikelenboom <linux@eikelenboom.it>
Cc: Sean Young <sean@mess.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/CA+55aFyEcOMb657vWSmrM13OxmHxC-XxeBmNis=DwVvpJUOogQ@mail.gmail.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2017-11-16 12:49:48 +01:00
Linus Torvalds 7c225c69f8 Merge branch 'akpm' (patches from Andrew)
Merge updates from Andrew Morton:

 - a few misc bits

 - ocfs2 updates

 - almost all of MM

* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (131 commits)
  memory hotplug: fix comments when adding section
  mm: make alloc_node_mem_map a void call if we don't have CONFIG_FLAT_NODE_MEM_MAP
  mm: simplify nodemask printing
  mm,oom_reaper: remove pointless kthread_run() error check
  mm/page_ext.c: check if page_ext is not prepared
  writeback: remove unused function parameter
  mm: do not rely on preempt_count in print_vma_addr
  mm, sparse: do not swamp log with huge vmemmap allocation failures
  mm/hmm: remove redundant variable align_end
  mm/list_lru.c: mark expected switch fall-through
  mm/shmem.c: mark expected switch fall-through
  mm/page_alloc.c: broken deferred calculation
  mm: don't warn about allocations which stall for too long
  fs: fuse: account fuse_inode slab memory as reclaimable
  mm, page_alloc: fix potential false positive in __zone_watermark_ok
  mm: mlock: remove lru_add_drain_all()
  mm, sysctl: make NUMA stats configurable
  shmem: convert shmem_init_inodecache() to void
  Unify migrate_pages and move_pages access checks
  mm, pagevec: rename pagevec drained field
  ...
2017-11-15 19:42:40 -08:00
Levin, Alexander (Sasha Levin) 4950276672 kmemcheck: remove annotations
Patch series "kmemcheck: kill kmemcheck", v2.

As discussed at LSF/MM, kill kmemcheck.

KASan is a replacement that is able to work without the limitation of
kmemcheck (single CPU, slow).  KASan is already upstream.

We are also not aware of any users of kmemcheck (or users who don't
consider KASan as a suitable replacement).

The only objection was that since KASAN wasn't supported by all GCC
versions provided by distros at that time we should hold off for 2
years, and try again.

Now that 2 years have passed, and all distros provide gcc that supports
KASAN, kill kmemcheck again for the very same reasons.

This patch (of 4):

Remove kmemcheck annotations, and calls to kmemcheck from the kernel.

[alexander.levin@verizon.com: correctly remove kmemcheck call from dma_map_sg_attrs]
  Link: http://lkml.kernel.org/r/20171012192151.26531-1-alexander.levin@verizon.com
Link: http://lkml.kernel.org/r/20171007030159.22241-2-alexander.levin@verizon.com
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: Eric W. Biederman <ebiederm@xmission.com>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Tim Hansen <devtimhansen@gmail.com>
Cc: Vegard Nossum <vegardno@ifi.uio.no>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-11-15 18:21:04 -08:00
Linus Torvalds 6363b3f3ac IPMI updates for 4.15
This is signed by my new key (919BFF81), which is now signed by my
 old key.
 
 This is a fairly large rework of the IPMI code, along with a bunch
 of smaller fixes.  The major changes have been in the next tree for
 a couple of months, so they should be good to do in.
 
 - Some users had IPMI systems where the GUID of the IPMI controller
   could change.  So rescanning of the GUID was added.  The naming of
   some sysfs things was dependent on the GUID, however, so this
   resulted in the sysfs interface code in IPMI changing to remove that
   dependency and name the IPMI BMCs like other sysfs devices.
 
 - The ipmi_si_intf.c code was fairly bloated with all the different
   discovery methods (PCI, ACPI, SMBIOS, OF, platform, module parameters,
   hot add).  The structure of how the interfaces were added was redone
   to make them more modular, then the individual methods were pulled
   out into their own files.
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Merge tag 'ipmi-for-4.15' of git://github.com/cminyard/linux-ipmi

Pull IPMI updates from Corey Minyard:
 "This is a fairly large rework of the IPMI code, along with a bunch of
  smaller fixes. The major changes have been in the next tree for a
  couple of months, so they should be good to do in.

   - Some users had IPMI systems where the GUID of the IPMI controller
     could change. So rescanning of the GUID was added. The naming of
     some sysfs things was dependent on the GUID, however, so this
     resulted in the sysfs interface code in IPMI changing to remove
     that dependency and name the IPMI BMCs like other sysfs devices.

   - The ipmi_si_intf.c code was fairly bloated with all the different
     discovery methods (PCI, ACPI, SMBIOS, OF, platform, module
     parameters, hot add). The structure of how the interfaces were
     added was redone to make them more modular, then the individual
     methods were pulled out into their own files"

* tag 'ipmi-for-4.15' of git://github.com/cminyard/linux-ipmi: (48 commits)
  ipmi_si: Delete an error message for a failed memory allocation in try_smi_init()
  ipmi_si: fix memory leak on new_smi
  ipmi: remove redundant initialization of bmc
  ipmi: pr_err() strings should end with newlines
  ipmi: Clean up some print operations
  ipmi: Make the DMI probe into a generic platform probe
  ipmi: Make the IPMI proc interface configurable
  ipmi_ssif: Add device attrs for the things in proc
  ipmi_si: Add device attrs for the things in proc
  ipmi_si: remove ipmi_smi_alloc() function
  ipmi_si: Move port and mem I/O handling to their own files
  ipmi_si: Get rid of unused spacing and port fields
  ipmi_si: Move PARISC handling to another file
  ipmi_si: Move PCI setup to another file
  ipmi_si: Move platform device handling to another file
  ipmi_si: Move hardcode handling to a separate file.
  ipmi_si: Move the hotmod handling to another file.
  ipmi_si: Change ipmi_si_add_smi() to take just I/O info
  ipmi_si: Move io setup into io structure
  ipmi_si: Move irq setup handling into the io struct
  ...
2017-11-15 15:12:28 -08:00
Linus Torvalds 1be2172e96 Modules updates for v4.15
Summary of modules changes for the 4.15 merge window:
 
 - Treewide module_param_call() cleanup, fix up set/get function
   prototype mismatches, from Kees Cook
 
 - Minor code cleanups
 
 Signed-off-by: Jessica Yu <jeyu@kernel.org>
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Merge tag 'modules-for-v4.15' of git://git.kernel.org/pub/scm/linux/kernel/git/jeyu/linux

Pull module updates from Jessica Yu:
 "Summary of modules changes for the 4.15 merge window:

   - treewide module_param_call() cleanup, fix up set/get function
     prototype mismatches, from Kees Cook

   - minor code cleanups"

* tag 'modules-for-v4.15' of git://git.kernel.org/pub/scm/linux/kernel/git/jeyu/linux:
  module: Do not paper over type mismatches in module_param_call()
  treewide: Fix function prototypes for module_param_call()
  module: Prepare to convert all module_param_call() prototypes
  kernel/module: Delete an error message for a failed memory allocation in add_module_usage()
2017-11-15 13:46:33 -08:00
Linus Torvalds 37dc79565c Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
Pull crypto updates from Herbert Xu:
 "Here is the crypto update for 4.15:

  API:

   - Disambiguate EBUSY when queueing crypto request by adding ENOSPC.
     This change touches code outside the crypto API.
   - Reset settings when empty string is written to rng_current.

  Algorithms:

   - Add OSCCA SM3 secure hash.

  Drivers:

   - Remove old mv_cesa driver (replaced by marvell/cesa).
   - Enable rfc3686/ecb/cfb/ofb AES in crypto4xx.
   - Add ccm/gcm AES in crypto4xx.
   - Add support for BCM7278 in iproc-rng200.
   - Add hash support on Exynos in s5p-sss.
   - Fix fallback-induced error in vmx.
   - Fix output IV in atmel-aes.
   - Fix empty GCM hash in mediatek.

  Others:

   - Fix DoS potential in lib/mpi.
   - Fix potential out-of-order issues with padata"

* 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (162 commits)
  lib/mpi: call cond_resched() from mpi_powm() loop
  crypto: stm32/hash - Fix return issue on update
  crypto: dh - Remove pointless checks for NULL 'p' and 'g'
  crypto: qat - Clean up error handling in qat_dh_set_secret()
  crypto: dh - Don't permit 'key' or 'g' size longer than 'p'
  crypto: dh - Don't permit 'p' to be 0
  crypto: dh - Fix double free of ctx->p
  hwrng: iproc-rng200 - Add support for BCM7278
  dt-bindings: rng: Document BCM7278 RNG200 compatible
  crypto: chcr - Replace _manual_ swap with swap macro
  crypto: marvell - Add a NULL entry at the end of mv_cesa_plat_id_table[]
  hwrng: virtio - Virtio RNG devices need to be re-registered after suspend/resume
  crypto: atmel - remove empty functions
  crypto: ecdh - remove empty exit()
  MAINTAINERS: update maintainer for qat
  crypto: caam - remove unused param of ctx_map_to_sec4_sg()
  crypto: caam - remove unneeded edesc zeroization
  crypto: atmel-aes - Reset the controller before each use
  crypto: atmel-aes - properly set IV after {en,de}crypt
  hwrng: core - Reset user selected rng by writing "" to rng_current
  ...
2017-11-14 10:52:09 -08:00
Linus Torvalds 2bcc673101 Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timer updates from Thomas Gleixner:
 "Yet another big pile of changes:

   - More year 2038 work from Arnd slowly reaching the point where we
     need to think about the syscalls themself.

   - A new timer function which allows to conditionally (re)arm a timer
     only when it's either not running or the new expiry time is sooner
     than the armed expiry time. This allows to use a single timer for
     multiple timeout requirements w/o caring about the first expiry
     time at the call site.

   - A new NMI safe accessor to clock real time for the printk timestamp
     work. Can be used by tracing, perf as well if required.

   - A large number of timer setup conversions from Kees which got
     collected here because either maintainers requested so or they
     simply got ignored. As Kees pointed out already there are a few
     trivial merge conflicts and some redundant commits which was
     unavoidable due to the size of this conversion effort.

   - Avoid a redundant iteration in the timer wheel softirq processing.

   - Provide a mechanism to treat RTC implementations depending on their
     hardware properties, i.e. don't inflict the write at the 0.5
     seconds boundary which originates from the PC CMOS RTC to all RTCs.
     No functional change as drivers need to be updated separately.

   - The usual small updates to core code clocksource drivers. Nothing
     really exciting"

* 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (111 commits)
  timers: Add a function to start/reduce a timer
  pstore: Use ktime_get_real_fast_ns() instead of __getnstimeofday()
  timer: Prepare to change all DEFINE_TIMER() callbacks
  netfilter: ipvs: Convert timers to use timer_setup()
  scsi: qla2xxx: Convert timers to use timer_setup()
  block/aoe: discover_timer: Convert timers to use timer_setup()
  ide: Convert timers to use timer_setup()
  drbd: Convert timers to use timer_setup()
  mailbox: Convert timers to use timer_setup()
  crypto: Convert timers to use timer_setup()
  drivers/pcmcia: omap1: Fix error in automated timer conversion
  ARM: footbridge: Fix typo in timer conversion
  drivers/sgi-xp: Convert timers to use timer_setup()
  drivers/pcmcia: Convert timers to use timer_setup()
  drivers/memstick: Convert timers to use timer_setup()
  drivers/macintosh: Convert timers to use timer_setup()
  hwrng/xgene-rng: Convert timers to use timer_setup()
  auxdisplay: Convert timers to use timer_setup()
  sparc/led: Convert timers to use timer_setup()
  mips: ip22/32: Convert timers to use timer_setup()
  ...
2017-11-13 17:56:58 -08:00
Linus Torvalds 8e9a2dba86 Merge branch 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull core locking updates from Ingo Molnar:
 "The main changes in this cycle are:

   - Another attempt at enabling cross-release lockdep dependency
     tracking (automatically part of CONFIG_PROVE_LOCKING=y), this time
     with better performance and fewer false positives. (Byungchul Park)

   - Introduce lockdep_assert_irqs_enabled()/disabled() and convert
     open-coded equivalents to lockdep variants. (Frederic Weisbecker)

   - Add down_read_killable() and use it in the VFS's iterate_dir()
     method. (Kirill Tkhai)

   - Convert remaining uses of ACCESS_ONCE() to
     READ_ONCE()/WRITE_ONCE(). Most of the conversion was Coccinelle
     driven. (Mark Rutland, Paul E. McKenney)

   - Get rid of lockless_dereference(), by strengthening Alpha atomics,
     strengthening READ_ONCE() with smp_read_barrier_depends() and thus
     being able to convert users of lockless_dereference() to
     READ_ONCE(). (Will Deacon)

   - Various micro-optimizations:

        - better PV qspinlocks (Waiman Long),
        - better x86 barriers (Michael S. Tsirkin)
        - better x86 refcounts (Kees Cook)

   - ... plus other fixes and enhancements. (Borislav Petkov, Juergen
     Gross, Miguel Bernal Marin)"

* 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (70 commits)
  locking/x86: Use LOCK ADD for smp_mb() instead of MFENCE
  rcu: Use lockdep to assert IRQs are disabled/enabled
  netpoll: Use lockdep to assert IRQs are disabled/enabled
  timers/posix-cpu-timers: Use lockdep to assert IRQs are disabled/enabled
  sched/clock, sched/cputime: Use lockdep to assert IRQs are disabled/enabled
  irq_work: Use lockdep to assert IRQs are disabled/enabled
  irq/timings: Use lockdep to assert IRQs are disabled/enabled
  perf/core: Use lockdep to assert IRQs are disabled/enabled
  x86: Use lockdep to assert IRQs are disabled/enabled
  smp/core: Use lockdep to assert IRQs are disabled/enabled
  timers/hrtimer: Use lockdep to assert IRQs are disabled/enabled
  timers/nohz: Use lockdep to assert IRQs are disabled/enabled
  workqueue: Use lockdep to assert IRQs are disabled/enabled
  irq/softirqs: Use lockdep to assert IRQs are disabled/enabled
  locking/lockdep: Add IRQs disabled/enabled assertion APIs: lockdep_assert_irqs_enabled()/disabled()
  locking/pvqspinlock: Implement hybrid PV queued/unfair locks
  locking/rwlocks: Fix comments
  x86/paravirt: Set up the virt_spin_lock_key after static keys get initialized
  block, locking/lockdep: Assign a lock_class per gendisk used for wait_for_completion()
  workqueue: Remove now redundant lock acquisitions wrt. workqueue flushes
  ...
2017-11-13 12:38:26 -08:00
Linus Torvalds 55b3a0cb5a Merge branch 'next-general' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security
Pull general security subsystem updates from James Morris:
 "TPM (from Jarkko):
   - essential clean up for tpm_crb so that ARM64 and x86 versions do
     not distract each other as much as before

   - /dev/tpm0 rejects now too short writes (shorter buffer than
     specified in the command header

   - use DMA-safe buffer in tpm_tis_spi

   - otherwise mostly minor fixes.

  Smack:
   - base support for overlafs

  Capabilities:
   - BPRM_FCAPS fixes, from Richard Guy Briggs:

     The audit subsystem is adding a BPRM_FCAPS record when auditing
     setuid application execution (SYSCALL execve). This is not expected
     as it was supposed to be limited to when the file system actually
     had capabilities in an extended attribute. It lists all
     capabilities making the event really ugly to parse what is
     happening. The PATH record correctly records the setuid bit and
     owner. Suppress the BPRM_FCAPS record on set*id.

  TOMOYO:
   - Y2038 timestamping fixes"

* 'next-general' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security: (28 commits)
  MAINTAINERS: update the IMA, EVM, trusted-keys, encrypted-keys entries
  Smack: Base support for overlayfs
  MAINTAINERS: remove David Safford as maintainer for encrypted+trusted keys
  tomoyo: fix timestamping for y2038
  capabilities: audit log other surprising conditions
  capabilities: fix logic for effective root or real root
  capabilities: invert logic for clarity
  capabilities: remove a layer of conditional logic
  capabilities: move audit log decision to function
  capabilities: use intuitive names for id changes
  capabilities: use root_priveleged inline to clarify logic
  capabilities: rename has_cap to has_fcap
  capabilities: intuitive names for cap gain status
  capabilities: factor out cap_bprm_set_creds privileged root
  tpm, tpm_tis: use ARRAY_SIZE() to define TPM_HID_USR_IDX
  tpm: fix duplicate inline declaration specifier
  tpm: fix type of a local variables in tpm_tis_spi.c
  tpm: fix type of a local variable in tpm2_map_command()
  tpm: fix type of a local variable in tpm2_get_cc_attrs_tbl()
  tpm-dev-common: Reject too short writes
  ...
2017-11-13 10:30:44 -08:00
Al Viro 24219d21c7 ipmi: get rid of pointless access_ok()
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2017-11-10 08:48:42 -05:00
Florian Fainelli c3577f6100 hwrng: iproc-rng200 - Add support for BCM7278
BCM7278 features a RNG200 hardware random number generator block, add
support for this chip by matching the chip-specific compatible string
and extending the Kconfig dependencies to allow building on ARCH_BRCMSTB
(base platform for 7278).

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2017-11-10 19:20:12 +08:00
Ingo Molnar 8c5db92a70 Merge branch 'linus' into locking/core, to resolve conflicts
Conflicts:
	include/linux/compiler-clang.h
	include/linux/compiler-gcc.h
	include/linux/compiler-intel.h
	include/uapi/linux/stddef.h

Signed-off-by: Ingo Molnar <mingo@kernel.org>
2017-11-07 10:32:44 +01:00
Jim Quigley e5cc6e79bb hwrng: virtio - Virtio RNG devices need to be re-registered after suspend/resume
The patch for

commit: 5c06273401
Author: Amit Shah <amit.shah@redhat.com>
Date:   Sun Jul 27 07:34:01 2014 +0930

    virtio: rng: delay hwrng_register() till driver is ready

moved the call to hwrng_register() out of the probe routine into the scan
routine. We need to call hwrng_register() after a suspend/restore cycle
to re-register the device, but the scan function is not invoked for the
restore. Add the call to hwrng_register() to virtio_restore().

Reviewed-by: Liam Merwick <Liam.Merwick@oracle.com>
Signed-off-by: Jim Quigley <Jim.Quigley@oracle.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2017-11-06 14:45:06 +08:00
PrasannaKumar Muralidharan 142a27f0a7 hwrng: core - Reset user selected rng by writing "" to rng_current
User is able to select a chosen rng by writing its name to rng_current
but there is no way to reset it without unbinding the rng. Let user
write "" to rng_current and delesect the chosen rng.

Signed-off-by: PrasannaKumar Muralidharan <prasannatsmkumar@gmail.com>
reviewed-by: Harald Freudenberger <freude@linux.vnet.ibm.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2017-11-03 22:11:25 +08:00
Kees Cook c8dd5e456d hwrng: xgene - Convert timers to use timer_setup()
In preparation for unconditionally passing the struct timer_list pointer to
all timer callbacks, switch to using the new timer_setup() and from_timer()
to pass the timer pointer explicitly.

Cc: Matt Mackall <mpm@selenic.com>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: linux-crypto@vger.kernel.org
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2017-11-03 22:11:16 +08:00
Herbert Xu ab387f0af2 Linux 4.14-rc3
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Merge git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux

Merge 4.14-rc3 in order to pick up the new timer_setup function.
2017-11-03 22:10:18 +08:00
Kees Cook 200d24d633 hwrng/xgene-rng: Convert timers to use timer_setup()
In preparation for unconditionally passing the struct timer_list pointer to
all timer callbacks, switch to using the new timer_setup() and from_timer()
to pass the timer pointer explicitly.

Cc: Matt Mackall <mpm@selenic.com>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: linux-crypto@vger.kernel.org
Signed-off-by: Kees Cook <keescook@chromium.org>
2017-11-02 15:50:48 -07:00
Corey Minyard 6297fabd93 Merge branch 'modules-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jeyu/linux into for-next
The IPMI SI driver was split into different pieces, merge the module
tree to accountfor that.

Signed-off-by: Corey Minyard <cminyard@mvista.com>
2017-11-02 11:19:15 -05:00
Greg Kroah-Hartman b24413180f License cleanup: add SPDX GPL-2.0 license identifier to files with no license
Many source files in the tree are missing licensing information, which
makes it harder for compliance tools to determine the correct license.

By default all files without license information are under the default
license of the kernel, which is GPL version 2.

Update the files which contain no license information with the 'GPL-2.0'
SPDX license identifier.  The SPDX identifier is a legally binding
shorthand, which can be used instead of the full boiler plate text.

This patch is based on work done by Thomas Gleixner and Kate Stewart and
Philippe Ombredanne.

How this work was done:

Patches were generated and checked against linux-4.14-rc6 for a subset of
the use cases:
 - file had no licensing information it it.
 - file was a */uapi/* one with no licensing information in it,
 - file was a */uapi/* one with existing licensing information,

Further patches will be generated in subsequent months to fix up cases
where non-standard license headers were used, and references to license
had to be inferred by heuristics based on keywords.

The analysis to determine which SPDX License Identifier to be applied to
a file was done in a spreadsheet of side by side results from of the
output of two independent scanners (ScanCode & Windriver) producing SPDX
tag:value files created by Philippe Ombredanne.  Philippe prepared the
base worksheet, and did an initial spot review of a few 1000 files.

The 4.13 kernel was the starting point of the analysis with 60,537 files
assessed.  Kate Stewart did a file by file comparison of the scanner
results in the spreadsheet to determine which SPDX license identifier(s)
to be applied to the file. She confirmed any determination that was not
immediately clear with lawyers working with the Linux Foundation.

Criteria used to select files for SPDX license identifier tagging was:
 - Files considered eligible had to be source code files.
 - Make and config files were included as candidates if they contained >5
   lines of source
 - File already had some variant of a license header in it (even if <5
   lines).

All documentation files were explicitly excluded.

The following heuristics were used to determine which SPDX license
identifiers to apply.

 - when both scanners couldn't find any license traces, file was
   considered to have no license information in it, and the top level
   COPYING file license applied.

   For non */uapi/* files that summary was:

   SPDX license identifier                            # files
   ---------------------------------------------------|-------
   GPL-2.0                                              11139

   and resulted in the first patch in this series.

   If that file was a */uapi/* path one, it was "GPL-2.0 WITH
   Linux-syscall-note" otherwise it was "GPL-2.0".  Results of that was:

   SPDX license identifier                            # files
   ---------------------------------------------------|-------
   GPL-2.0 WITH Linux-syscall-note                        930

   and resulted in the second patch in this series.

 - if a file had some form of licensing information in it, and was one
   of the */uapi/* ones, it was denoted with the Linux-syscall-note if
   any GPL family license was found in the file or had no licensing in
   it (per prior point).  Results summary:

   SPDX license identifier                            # files
   ---------------------------------------------------|------
   GPL-2.0 WITH Linux-syscall-note                       270
   GPL-2.0+ WITH Linux-syscall-note                      169
   ((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause)    21
   ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause)    17
   LGPL-2.1+ WITH Linux-syscall-note                      15
   GPL-1.0+ WITH Linux-syscall-note                       14
   ((GPL-2.0+ WITH Linux-syscall-note) OR BSD-3-Clause)    5
   LGPL-2.0+ WITH Linux-syscall-note                       4
   LGPL-2.1 WITH Linux-syscall-note                        3
   ((GPL-2.0 WITH Linux-syscall-note) OR MIT)              3
   ((GPL-2.0 WITH Linux-syscall-note) AND MIT)             1

   and that resulted in the third patch in this series.

 - when the two scanners agreed on the detected license(s), that became
   the concluded license(s).

 - when there was disagreement between the two scanners (one detected a
   license but the other didn't, or they both detected different
   licenses) a manual inspection of the file occurred.

 - In most cases a manual inspection of the information in the file
   resulted in a clear resolution of the license that should apply (and
   which scanner probably needed to revisit its heuristics).

 - When it was not immediately clear, the license identifier was
   confirmed with lawyers working with the Linux Foundation.

 - If there was any question as to the appropriate license identifier,
   the file was flagged for further research and to be revisited later
   in time.

In total, over 70 hours of logged manual review was done on the
spreadsheet to determine the SPDX license identifiers to apply to the
source files by Kate, Philippe, Thomas and, in some cases, confirmation
by lawyers working with the Linux Foundation.

Kate also obtained a third independent scan of the 4.13 code base from
FOSSology, and compared selected files where the other two scanners
disagreed against that SPDX file, to see if there was new insights.  The
Windriver scanner is based on an older version of FOSSology in part, so
they are related.

Thomas did random spot checks in about 500 files from the spreadsheets
for the uapi headers and agreed with SPDX license identifier in the
files he inspected. For the non-uapi files Thomas did random spot checks
in about 15000 files.

In initial set of patches against 4.14-rc6, 3 files were found to have
copy/paste license identifier errors, and have been fixed to reflect the
correct identifier.

Additionally Philippe spent 10 hours this week doing a detailed manual
inspection and review of the 12,461 patched files from the initial patch
version early this week with:
 - a full scancode scan run, collecting the matched texts, detected
   license ids and scores
 - reviewing anything where there was a license detected (about 500+
   files) to ensure that the applied SPDX license was correct
 - reviewing anything where there was no detection but the patch license
   was not GPL-2.0 WITH Linux-syscall-note to ensure that the applied
   SPDX license was correct

This produced a worksheet with 20 files needing minor correction.  This
worksheet was then exported into 3 different .csv files for the
different types of files to be modified.

These .csv files were then reviewed by Greg.  Thomas wrote a script to
parse the csv files and add the proper SPDX tag to the file, in the
format that the file expected.  This script was further refined by Greg
based on the output to detect more types of files automatically and to
distinguish between header and source .c files (which need different
comment types.)  Finally Greg ran the script using the .csv files to
generate the patches.

Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-11-02 11:10:55 +01:00
Kees Cook e4dca7b7aa treewide: Fix function prototypes for module_param_call()
Several function prototypes for the set/get functions defined by
module_param_call() have a slightly wrong argument types. This fixes
those in an effort to clean up the calls when running under type-enforced
compiler instrumentation for CFI. This is the result of running the
following semantic patch:

@match_module_param_call_function@
declarer name module_param_call;
identifier _name, _set_func, _get_func;
expression _arg, _mode;
@@

 module_param_call(_name, _set_func, _get_func, _arg, _mode);

@fix_set_prototype
 depends on match_module_param_call_function@
identifier match_module_param_call_function._set_func;
identifier _val, _param;
type _val_type, _param_type;
@@

 int _set_func(
-_val_type _val
+const char * _val
 ,
-_param_type _param
+const struct kernel_param * _param
 ) { ... }

@fix_get_prototype
 depends on match_module_param_call_function@
identifier match_module_param_call_function._get_func;
identifier _val, _param;
type _val_type, _param_type;
@@

 int _get_func(
-_val_type _val
+char * _val
 ,
-_param_type _param
+const struct kernel_param * _param
 ) { ... }

Two additional by-hand changes are included for places where the above
Coccinelle script didn't notice them:

	drivers/platform/x86/thinkpad_acpi.c
	fs/lockd/svc.c

Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Jessica Yu <jeyu@kernel.org>
2017-10-31 15:30:37 +01:00
Mark Rutland 6aa7de0591 locking/atomics: COCCINELLE/treewide: Convert trivial ACCESS_ONCE() patterns to READ_ONCE()/WRITE_ONCE()
Please do not apply this to mainline directly, instead please re-run the
coccinelle script shown below and apply its output.

For several reasons, it is desirable to use {READ,WRITE}_ONCE() in
preference to ACCESS_ONCE(), and new code is expected to use one of the
former. So far, there's been no reason to change most existing uses of
ACCESS_ONCE(), as these aren't harmful, and changing them results in
churn.

However, for some features, the read/write distinction is critical to
correct operation. To distinguish these cases, separate read/write
accessors must be used. This patch migrates (most) remaining
ACCESS_ONCE() instances to {READ,WRITE}_ONCE(), using the following
coccinelle script:

----
// Convert trivial ACCESS_ONCE() uses to equivalent READ_ONCE() and
// WRITE_ONCE()

// $ make coccicheck COCCI=/home/mark/once.cocci SPFLAGS="--include-headers" MODE=patch

virtual patch

@ depends on patch @
expression E1, E2;
@@

- ACCESS_ONCE(E1) = E2
+ WRITE_ONCE(E1, E2)

@ depends on patch @
expression E;
@@

- ACCESS_ONCE(E)
+ READ_ONCE(E)
----

Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: davem@davemloft.net
Cc: linux-arch@vger.kernel.org
Cc: mpe@ellerman.id.au
Cc: shuah@kernel.org
Cc: snitzer@redhat.com
Cc: thor.thayer@linux.intel.com
Cc: tj@kernel.org
Cc: viro@zeniv.linux.org.uk
Cc: will.deacon@arm.com
Link: http://lkml.kernel.org/r/1508792849-3115-19-git-send-email-paulmck@linux.vnet.ibm.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2017-10-25 11:01:08 +02:00
Kees Cook 9577924bb3 char: pcmcia: Convert timers to use timer_setup()
In preparation for unconditionally passing the struct timer_list pointer to
all timer callbacks, switch to using the new timer_setup() and from_timer()
to pass the timer pointer explicitly.

Cc: Harald Welte <laforge@gnumonks.org>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Jarod Wilson <jarod@redhat.com>
Cc: Stephen Hemminger <stephen@networkplumber.org>
Cc: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-10-20 15:17:44 +02:00
Jérémy Lefaure 33957a104c tpm, tpm_tis: use ARRAY_SIZE() to define TPM_HID_USR_IDX
Signed-off-by: Jérémy Lefaure <jeremy.lefaure@lse.epita.fr>
Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
2017-10-18 18:28:49 +03:00
Ruben Roy 2d56c71835 tpm: fix duplicate inline declaration specifier
This commit fixes the duplicate inline declaration specifier in
tpm2_rc_value which caused a warning

Signed-off-by: Ruben Roy <rubenroy2005@gmail.com>
Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
2017-10-18 18:28:49 +03:00
Jarkko Sakkinen 1a7a9b26c6 tpm: fix type of a local variables in tpm_tis_spi.c
Use __le32 type for data in that format.

Fixes: 0edbfea537 ("tpm/tpm_tis_spi: Add support for spi phy")
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Reviewed-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
2017-10-18 18:28:48 +03:00
Jarkko Sakkinen 4557d4bedc tpm: fix type of a local variable in tpm2_map_command()
The local variable 'handle' should have the type __be32 instead of u32.

Fixes: 745b361e98 ("tpm: infrastructure for TPM spaces")
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Reviewed-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
2017-10-18 18:28:48 +03:00
Jarkko Sakkinen 171360d780 tpm: fix type of a local variable in tpm2_get_cc_attrs_tbl()
The local variable 'attrs' should have the type __be32 instead of u32.

Fixes: 58472f5cd4 ("tpm: validate TPM 2.0 commands")
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Reviewed-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
2017-10-18 18:28:48 +03:00
Alexander Steffen ee70bc1e7b tpm-dev-common: Reject too short writes
tpm_transmit() does not offer an explicit interface to indicate the number
of valid bytes in the communication buffer. Instead, it relies on the
commandSize field in the TPM header that is encoded within the buffer.
Therefore, ensure that a) enough data has been written to the buffer, so
that the commandSize field is present and b) the commandSize field does not
announce more data than has been written to the buffer.

This should have been fixed with CVE-2011-1161 long ago, but apparently
a correct version of that patch never made it into the kernel.

Cc: stable@vger.kernel.org
Signed-off-by: Alexander Steffen <Alexander.Steffen@infineon.com>
Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Tested-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
2017-10-18 18:28:47 +03:00
Alexander Steffen 125a221054 tpm: React correctly to RC_TESTING from TPM 2.0 self tests
The TPM can choose one of two ways to react to the TPM2_SelfTest command.
It can either run all self tests synchronously and then return RC_SUCCESS
once all tests were successful. Or it can choose to run the tests
asynchronously and return RC_TESTING immediately while the self tests still
execute in the background.

The previous implementation apparently was not aware of those possibilities
and attributed RC_TESTING to some prototype chips instead. With this change
the return code of TPM2_SelfTest is interpreted correctly, i.e. the self
test result is polled if and only if RC_TESTING is received.

Unfortunately, the polling cannot be done in the most straightforward way.
If RC_TESTING is received, ideally the code should now poll the
selfTestDone bit in the STS register, as this avoids sending more commands,
that might interrupt self tests executing in the background and thus
prevent them from ever completing. But it cannot be guaranteed that this
bit is correctly implemented for all devices, so the next best thing would
be to use TPM2_GetTestResult to query the test result. But the response to
that command can be very long, and the code currently lacks the
capabilities for efficient unmarshalling, so it is difficult to execute
this command.

Therefore, we simply run the TPM2_SelfTest command in a loop, which should
complete eventually, since we only request the execution of self tests that
have not yet been done.

Signed-off-by: Alexander Steffen <Alexander.Steffen@infineon.com>
Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Tested-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
2017-10-18 18:28:47 +03:00
Alexander Steffen 87434f58be tpm: Use dynamic delay to wait for TPM 2.0 self test result
In order to avoid delaying the code longer than necessary while still
giving the TPM enough time to execute the self tests asynchronously, start
with a small delay between two polls and increase it each round.

Signed-off-by: Alexander Steffen <Alexander.Steffen@infineon.com>
Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Tested-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
2017-10-18 18:28:46 +03:00
Alexander Steffen 2482b1bba5 tpm: Trigger only missing TPM 2.0 self tests
tpm2_do_selftest is only used during initialization of the TPM to ensure
that the device functions correctly. Therefore, it is sufficient to request
only missing self tests (parameter full_test=0), not a reexecution of all
self tests, as was done before. This allows for a faster execution of this
command.

Signed-off-by: Alexander Steffen <Alexander.Steffen@infineon.com>
Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Tested-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
2017-10-18 18:28:46 +03:00
Alexander Steffen 6b3a13173f tpm_tis_spi: Use DMA-safe memory for SPI transfers
The buffers used as tx_buf/rx_buf in a SPI transfer need to be DMA-safe.
This cannot be guaranteed for the buffers passed to tpm_tis_spi_read_bytes
and tpm_tis_spi_write_bytes. Therefore, we need to use our own DMA-safe
buffer and copy the data to/from it.

The buffer needs to be allocated separately, to ensure that it is
cacheline-aligned and not shared with other data, so that DMA can work
correctly.

Fixes: 0edbfea537 ("tpm/tpm_tis_spi: Add support for spi phy")
Cc: stable@vger.kernel.org
Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Signed-off-by: Alexander Steffen <Alexander.Steffen@infineon.com>
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
2017-10-18 18:28:46 +03:00
Jiandi An f5357413db tpm/tpm_crb: Use start method value from ACPI table directly
This patch gets rid of dealing with intermediate flag for start method
and use start method value from ACPI table directly.

For ARM64, the locality is handled by Trust Zone in FW.  The layout
does not have crb_regs_head.  It is hitting the following line.
dev_warn(dev, FW_BUG "Bad ACPI memory layout");

Current code excludes CRB_FL_ACPI_START for this check.  Now since
ARM64 support for TPM CRB is added, CRB_FL_CRB_SMC_START should also be
excluded from this check.

For goIdle and cmdReady where code was excluding CRB_FL_ACPI_START only
(do nothing for ACPI start method), CRB_FL_CRB_SMC_START was also
excluded as ARM64 SMC start method does not have TPM_CRB_CTRL_REQ.

However with special PPT workaround requiring CRB_FL_CRB_START to be
set in addition to CRB_FL_ACPI_START and the addition flag of SMC
start method CRB_FL_CRB_SMC_START, the code has become difficult to
maintain and undrestand.  It is better to make code deal with start
method value from ACPI table directly.

Signed-off-by: Jiandi An <anjiandi@codeaurora.org>
Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Tested-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
2017-10-18 18:28:45 +03:00
Arnd Bergmann c37fbc09bd tpm: constify transmit data pointers
Making cmd_getticks 'const' introduced a couple of harmless warnings:

drivers/char/tpm/tpm_tis_core.c: In function 'probe_itpm':
drivers/char/tpm/tpm_tis_core.c:469:31: error: passing argument 2 of 'tpm_tis_send_data' discards 'const' qualifier from pointer target type [-Werror=discarded-qualifiers]
  rc = tpm_tis_send_data(chip, cmd_getticks, len);
drivers/char/tpm/tpm_tis_core.c:477:31: error: passing argument 2 of 'tpm_tis_send_data' discards 'const' qualifier from pointer target type [-Werror=discarded-qualifiers]
  rc = tpm_tis_send_data(chip, cmd_getticks, len);
drivers/char/tpm/tpm_tis_core.c:255:12: note: expected 'u8 * {aka unsigned char *}' but argument is of type 'const u8 * {aka const unsigned char *}'
 static int tpm_tis_send_data(struct tpm_chip *chip, u8 *buf, size_t len)

This changes the related functions to all take 'const' pointers
so that gcc can see this as being correct. I had to slightly
modify the logic around tpm_tis_spi_transfer() for this to work
without introducing ugly casts.

Cc: stable@vger.kernel.org
Fixes: 5e35bd8e06b9 ("tpm_tis: make array cmd_getticks static const to shink object code size")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Tested-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
2017-10-18 18:28:45 +03:00
Colin Ian King 0bbc931a07 tpm_tis: make array cmd_getticks static const to shrink object code size
Don't populate array cmd_getticks on the stack, instead make it static
const.  Makes the object code smaller by over 160 bytes:

Before:
   text	   data	    bss	    dec	    hex	filename
  18813	   3152	    128	  22093	   564d	drivers/char/tpm/tpm_tis_core.o

After:
   text	   data	    bss	    dec	    hex	filename
  18554	   3248	    128	  21930	   55aa	drivers/char/tpm/tpm_tis_core.o

Cc: stable@vger.kernel.org
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
2017-10-18 18:28:23 +03:00
Markus Elfring d7e17fe4f7 ipmi_si: Delete an error message for a failed memory allocation in try_smi_init()
Omit an extra message for a memory allocation failure in this function.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Corey Minyard <cminyard@mvista.com>
2017-10-17 15:50:15 -05:00
Colin Ian King c0a32fe13c ipmi_si: fix memory leak on new_smi
The error exit path omits kfree'ing the allocated new_smi, causing a memory
leak.  Fix this by kfree'ing new_smi.

Detected by CoverityScan, CID#14582571 ("Resource Leak")

Fixes: 7e030d6dff ("ipmi: Prefer ACPI system interfaces over SMBIOS ones")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Corey Minyard <cminyard@mvista.com>
2017-10-17 15:50:12 -05:00
Arvind Yadav 4d0ec22943 hwrng: core - pr_err() strings should end with newlines
pr_err() messages should terminated with a new-line to avoid
other messages being concatenated onto the end.

Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2017-10-12 22:54:49 +08:00
Jarkko Sakkinen da379f3c1d tpm: migrate pubek_show to struct tpm_buf
Migrated pubek_show to struct tpm_buf and cleaned up its implementation.
Previously the output parameter structure was declared but left
completely unused. Now it is used to refer different fields of the
output. We can move it to tpm-sysfs.c as it does not have any use
outside of that file.

Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
2017-10-12 14:28:59 +03:00
Kees Cook 1d27e3e225 timer: Remove expires and data arguments from DEFINE_TIMER
Drop the arguments from the macro and adjust all callers with the
following script:

  perl -pi -e 's/DEFINE_TIMER\((.*), 0, 0\);/DEFINE_TIMER($1);/g;' \
    $(git grep DEFINE_TIMER | cut -d: -f1 | sort -u | grep -v timer.h)

Signed-off-by: Kees Cook <keescook@chromium.org>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> # for m68k parts
Acked-by: Guenter Roeck <linux@roeck-us.net> # for watchdog parts
Acked-by: David S. Miller <davem@davemloft.net> # for networking parts
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Kalle Valo <kvalo@codeaurora.org> # for wireless parts
Acked-by: Arnd Bergmann <arnd@arndb.de>
Cc: linux-mips@linux-mips.org
Cc: Petr Mladek <pmladek@suse.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Lai Jiangshan <jiangshanlai@gmail.com>
Cc: Sebastian Reichel <sre@kernel.org>
Cc: Kalle Valo <kvalo@qca.qualcomm.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: linux1394-devel@lists.sourceforge.net
Cc: Chris Metcalf <cmetcalf@mellanox.com>
Cc: linux-s390@vger.kernel.org
Cc: linux-wireless@vger.kernel.org
Cc: "James E.J. Bottomley" <jejb@linux.vnet.ibm.com>
Cc: Wim Van Sebroeck <wim@iguana.be>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Ursula Braun <ubraun@linux.vnet.ibm.com>
Cc: Viresh Kumar <viresh.kumar@linaro.org>
Cc: Harish Patil <harish.patil@cavium.com>
Cc: Stephen Boyd <sboyd@codeaurora.org>
Cc: Michael Reed <mdr@sgi.com>
Cc: Manish Chopra <manish.chopra@cavium.com>
Cc: Len Brown <len.brown@intel.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: linux-pm@vger.kernel.org
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Tejun Heo <tj@kernel.org>
Cc: Julian Wiedmann <jwi@linux.vnet.ibm.com>
Cc: John Stultz <john.stultz@linaro.org>
Cc: Mark Gross <mark.gross@intel.com>
Cc: linux-watchdog@vger.kernel.org
Cc: linux-scsi@vger.kernel.org
Cc: "Martin K. Petersen" <martin.petersen@oracle.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Stefan Richter <stefanr@s5r6.in-berlin.de>
Cc: Guenter Roeck <linux@roeck-us.net>
Cc: netdev@vger.kernel.org
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: linuxppc-dev@lists.ozlabs.org
Cc: Sudip Mukherjee <sudipm.mukherjee@gmail.com>
Link: https://lkml.kernel.org/r/1507159627-127660-11-git-send-email-keescook@chromium.org
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2017-10-05 15:01:20 +02:00
Kees Cook 51487d9ed1 timer: Remove last user of TIMER_INITIALIZER
Drops the last user of TIMER_INITIALIZER and adapts timer.h to use the
internal version.

Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-mips@linux-mips.org
Cc: Petr Mladek <pmladek@suse.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Lai Jiangshan <jiangshanlai@gmail.com>
Cc: Sebastian Reichel <sre@kernel.org>
Cc: Kalle Valo <kvalo@qca.qualcomm.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: linux1394-devel@lists.sourceforge.net
Cc: Chris Metcalf <cmetcalf@mellanox.com>
Cc: linux-s390@vger.kernel.org
Cc: linux-wireless@vger.kernel.org
Cc: Mark Gross <mark.gross@intel.com>
Cc: Wim Van Sebroeck <wim@iguana.be>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Ursula Braun <ubraun@linux.vnet.ibm.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Viresh Kumar <viresh.kumar@linaro.org>
Cc: Harish Patil <harish.patil@cavium.com>
Cc: Stephen Boyd <sboyd@codeaurora.org>
Cc: Michael Reed <mdr@sgi.com>
Cc: Manish Chopra <manish.chopra@cavium.com>
Cc: Len Brown <len.brown@intel.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: linux-pm@vger.kernel.org
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Tejun Heo <tj@kernel.org>
Cc: Julian Wiedmann <jwi@linux.vnet.ibm.com>
Cc: John Stultz <john.stultz@linaro.org>
Cc: "James E.J. Bottomley" <jejb@linux.vnet.ibm.com>
Cc: linux-watchdog@vger.kernel.org
Cc: linux-scsi@vger.kernel.org
Cc: "Martin K. Petersen" <martin.petersen@oracle.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Stefan Richter <stefanr@s5r6.in-berlin.de>
Cc: Guenter Roeck <linux@roeck-us.net>
Cc: netdev@vger.kernel.org
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: linuxppc-dev@lists.ozlabs.org
Cc: Sudip Mukherjee <sudipm.mukherjee@gmail.com>
Link: https://lkml.kernel.org/r/1507159627-127660-8-git-send-email-keescook@chromium.org
2017-10-05 15:01:18 +02:00
Colin Ian King b79bba15b3 ipmi: remove redundant initialization of bmc
The pointer bmc is being initialized and this initialized value is
never being read, so this is assignment redundant and can be removed.
Cleans up clang warning:

warning: Value stored to 'bmc' during its initialization is never read

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Corey Minyard <cminyard@mvista.com>
2017-09-28 12:29:44 -05:00
Arvind Yadav daf9a4ebb7 ipmi: pr_err() strings should end with newlines
pr_err() messages should terminated with a new-line to avoid
other messages being concatenated onto the end.

Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: Corey Minyard <cminyard@mvista.com>
2017-09-28 12:26:05 -05:00
Corey Minyard 106a846102 ipmi: Clean up some print operations
Get rid of all printfs, using dev_xxx() if a device is available,
pr_xxx() otherwise, and format long strings properly.

Signed-off-by: Corey Minyard <cminyard@mvista.com>
2017-09-28 12:26:04 -05:00
Corey Minyard 95e300c052 ipmi: Make the DMI probe into a generic platform probe
Rework the DMI probe function to be a generic platform probe, and
then rework the DMI code (and a few other things) to use the more
generic information.  This is so other things can declare platform
IPMI devices.

Signed-off-by: Corey Minyard <cminyard@mvista.com>
2017-09-28 12:26:03 -05:00
Corey Minyard 55f91cb6f1 ipmi: Make the IPMI proc interface configurable
So we can remove it later.

Signed-off-by: Corey Minyard <cminyard@mvista.com>
2017-09-28 12:26:03 -05:00
Corey Minyard ac2673d56b ipmi_ssif: Add device attrs for the things in proc
Create a device attribute for everything we show in proc, getting
ready for removing the proc stuff.

Signed-off-by: Corey Minyard <cminyard@mvista.com>
2017-09-28 12:26:02 -05:00
Corey Minyard 3dd377b5b0 ipmi_si: Add device attrs for the things in proc
Create a device attribute for everything we show in proc, getting
ready for removing the proc stuff.

Signed-off-by: Corey Minyard <cminyard@mvista.com>
2017-09-28 12:26:01 -05:00
Corey Minyard 67f4fb025d ipmi_si: remove ipmi_smi_alloc() function
It's only used in one place now, so it's overkill.

Signed-off-by: Corey Minyard <cminyard@mvista.com>
2017-09-28 12:26:01 -05:00
Corey Minyard 58e2763553 ipmi_si: Move port and mem I/O handling to their own files
Signed-off-by: Corey Minyard <cminyard@mvista.com>
2017-09-28 12:26:00 -05:00
Corey Minyard d1a6791323 ipmi_si: Get rid of unused spacing and port fields
Signed-off-by: Corey Minyard <cminyard@mvista.com>
2017-09-28 12:25:59 -05:00
Corey Minyard c6f85a753d ipmi_si: Move PARISC handling to another file
Signed-off-by: Corey Minyard <cminyard@mvista.com>
2017-09-28 12:25:58 -05:00
Corey Minyard 13d0b35c5c ipmi_si: Move PCI setup to another file
Signed-off-by: Corey Minyard <cminyard@mvista.com>

Stephen Rothwell <sfr@canb.auug.org.au> fixed an issue with the
include files
2017-09-28 12:25:50 -05:00
Corey Minyard 9d70029edb ipmi_si: Move platform device handling to another file
Signed-off-by: Corey Minyard <cminyard@mvista.com>

Stephen Rothwell <sfr@canb.auug.org.au> fixed an issue with the
include files
2017-09-28 12:24:42 -05:00
Corey Minyard 7a4533087c ipmi_si: Move hardcode handling to a separate file.
Signed-off-by: Corey Minyard <cminyard@mvista.com>
2017-09-27 16:03:45 -05:00
Corey Minyard 44814ec982 ipmi_si: Move the hotmod handling to another file.
Signed-off-by: Corey Minyard <cminyard@mvista.com>
2017-09-27 16:03:45 -05:00
Corey Minyard bb398a4cb0 ipmi_si: Change ipmi_si_add_smi() to take just I/O info
Instead of allocating the smi_info structure, filling in the I/O
info, and passing it to ipmi_si_add_smi(), just pass the I/O
info in the io structure and let ipmi_si_add_smi() allocate
the smi_info structure.

This required redoing the way the remove functions for some
device interfaces worked, a new function named
ipmi_si_remove_by_dev() allows the device to be passed in and
detected instead of using driver data, which couldn't be
filled out easily othersize.

After this the platform handling should be decoupled from the
smi_info structure and that handling can be pulled out to its
own files.

Signed-off-by: Corey Minyard <cminyard@mvista.com>
2017-09-27 16:03:45 -05:00
Corey Minyard e1eeb7f862 ipmi_si: Move io setup into io structure
Where it belongs, and getting ready for pulling the platform
handling into its own file.

Signed-off-by: Corey Minyard <cminyard@mvista.com>
2017-09-27 16:03:45 -05:00
Corey Minyard 4f3e8199c3 ipmi_si: Move irq setup handling into the io struct
So the platform code can do it without having to access the
smi info, getting ready for pulling the platform handling
section to their own files.

Signed-off-by: Corey Minyard <cminyard@mvista.com>
2017-09-27 16:03:45 -05:00
Corey Minyard 910840f24b ipmi_si: Move some platform data into the io structure
That's where it belongs, and we are getting ready for moving the
platform handling out of the main ipmi_si_intf.c file.

Signed-off-by: Corey Minyard <cminyard@mvista.com>
2017-09-27 16:03:45 -05:00
Corey Minyard 1e89a499e5 ipmi_si: Rename function to add smi, make it global
Getting ready for moving the platform-specific stuff into their
own files.

Signed-off-by: Corey Minyard <cminyard@mvista.com>
2017-09-27 16:03:45 -05:00
Corey Minyard 3fd32f9ec8 ipmi: Convert IPMI GUID over to Linux guid_t
Signed-off-by: Corey Minyard <cminyard@mvista.com>
2017-09-27 16:03:45 -05:00
Corey Minyard 31b0b0730a ipmi: Rescan channel list on BMC changes
If the BMC changes versions or a change is otherwise detected,
rescan the channels on the BMC.

Signed-off-by: Corey Minyard <cminyard@mvista.com>
2017-09-27 16:03:45 -05:00
Corey Minyard 5fdb1fb2ab ipmi: Move lun and address out of channel struct
Put it in it's own struct, getting ready for channel information
being dynamically changed.

Signed-off-by: Corey Minyard <cminyard@mvista.com>
2017-09-27 16:03:45 -05:00
Corey Minyard c0734bd594 ipmi: Retry BMC registration on a failure
If the BMC fails to register, just set up to retry periodically.

Signed-off-by: Corey Minyard <cminyard@mvista.com>
2017-09-27 16:03:45 -05:00
Corey Minyard b2cfd8ab4a ipmi: Rework device id and guid handling to catch changing BMCs
A BMC's guid or device id info may change dynamically, this could
result in a different configuration that needs to be done.  Adjust
the BMCs dynamically.

Signed-off-by: Corey Minyard <cminyard@mvista.com>
2017-09-27 16:03:45 -05:00
Corey Minyard c659ff34f6 ipmi: Use a temporary BMC for an interface
This is getting ready for the ability to redo the BMC if it's
information changes, we need a fallback mechanism.

Signed-off-by: Corey Minyard <cminyard@mvista.com>
2017-09-27 16:03:45 -05:00
Corey Minyard 28f26ac7a9 ipmi: Dynamically fetch GUID periodically
This will catch if the GUID changes.

Signed-off-by: Corey Minyard <cminyard@mvista.com>
2017-09-27 16:03:45 -05:00
Corey Minyard 39d3fb4560 ipmi: Always fetch the guid through ipmi_get_device_id()
This is in preparation for making ipmi_get_device_id() dynamically
return the guid and device id.

Signed-off-by: Corey Minyard <cminyard@mvista.com>
2017-09-27 16:03:45 -05:00
Corey Minyard 1e5058ea21 ipmi: Remove the device id from ipmi_register_smi()
It's no longer used, dynamic device id handling is in place now.

Signed-off-by: Corey Minyard <cminyard@mvista.com>
2017-09-27 16:03:45 -05:00
Jeremy Kerr aa9c9ab244 ipmi: allow dynamic BMC version information
Currently, it's up to the IPMI SMIs to provide the product & version
details of BMCs behind registered IPMI SMI interfaces. This device ID is
provided on SMI regsitration, and kept around for all future queries.

However, this version information isn't always static. For example, a
BMC may be upgraded at runtime, making the old version information
stale.

This change allows querying the BMC device ID & version information
dynamically. If no static device_id argument is provided to
ipmi_register_smi, then the IPMI core code will perform a Get Device ID
IPMI command to query the version information when needed. We keep a
short-term cache of this information so we don't need to re-query
for every attribute access.

Signed-off-by: Jeremy Kerr <jk@ozlabs.org>

I basically rewrote this, I fixed some locking issues and simplified
things.  Same functional change, though.

Signed-off-by: Corey Minyard <cminyard@mvista.com>
2017-09-27 16:03:45 -05:00
Corey Minyard 68e7e50f19 ipmi: Don't use BMC product/dev ids in the BMC name
There are a lot of bad things that a set of BMCs could do that
would really confuse the IPMI driver; it's possible for BMCs with
different GUIDs to have the same product/devid (though that's
not technically legal), which would result in platform device
namespace collisions.  Fixing it would involve either using
the GUID in the BMC name, which resulted in huge names, or
just using an ida for numbering the BMCs.  The latter approach
was chosen to avoid the huge names.

Signed-off-by: Corey Minyard <cminyard@mvista.com>
2017-09-27 16:03:45 -05:00
Jeremy Kerr c468f911b7 ipmi: Make ipmi_demangle_device_id more generic
Currently, ipmi_demagle_device_id requires a full response buffer in its
data argument. This means we can't use it to parse a response in a
struct ipmi_recv_msg, which has the netfn and cmd as separate bytes.

This change alters the definition and users of ipmi_demangle_device_id
to use a split netfn, cmd and data buffer, so it can be used with
non-sequential responses.

Signed-off-by: Jeremy Kerr <jk@ozlabs.org>

Fixed the ipmi_ssif.c and ipmi_si_intf.c changes to use data from the
response, not the data from the message, when passing info to the
ipmi_demangle_device_id() function.

Signed-off-by: Corey Minyard <cminyard@mvista.com>
2017-09-27 16:03:45 -05:00
Jeremy Kerr a9137c3dfa ipmi: Add a reference from BMC devices to their interfaces
In an upcoming change, we'll want to grab a reference to the ipmi_smi_t
from a struct bmc_device. This change adds a pointer to allow this.

Signed-off-by: Jeremy Kerr <jk@ozlabs.org>

Reworked to support multiple interfaces on a BMC.

Signed-off-by: Corey Minyard <cminyard@mvista.com>
2017-09-27 16:03:45 -05:00
Corey Minyard 511d57dc71 ipmi: Get the device id through a function
This makes getting the device id consistent, and make it possible
to add a function to fetch it dynamically later.

Signed-off-by: Corey Minyard <cminyard@mvista.com>
2017-09-27 16:03:45 -05:00
Corey Minyard 9b64a8ba90 ipmi: Fix printing the BMC guid
It was just wrong.  Make it print according to the guid spec.

Signed-off-by: Corey Minyard <cminyard@mvista.com>
2017-09-27 16:03:45 -05:00
Corey Minyard a2cb600fa2 ipmi: Rework BMC registration
There was a certain error case where the BMC wouldn't be deregistered
like it should be.  Rework the BMC registration to make calling
ipmi_bmc_unregister() ok even if it's not registered and to clean up
the error handling for ipmi_bmc_register().

Signed-off-by: Corey Minyard <cminyard@mvista.com>
2017-09-27 16:03:45 -05:00
Corey Minyard 7e030d6dff ipmi: Prefer ACPI system interfaces over SMBIOS ones
The recent changes to add SMBIOS (DMI) IPMI interfaces as platform
devices caused DMI to be selected before ACPI, causing ACPI type
of operations to not work.

Signed-off-by: Corey Minyard <cminyard@mvista.com>
2017-09-27 16:03:45 -05:00
Corey Minyard 9ca15af316 ipmi: Fix issues with BMC refcounts
BMC device refcounts were not being decremented after fetching from
driver_find_device().  Also, document the use of ipmidriver_mutex
and tighten it's span some by incrementing the BMC's usecount in
the BMC find routines and not later.  This will be important for
future changes where a long mutex hold area will complicate things.

Signed-off-by: Corey Minyard <cminyard@mvista.com>
2017-09-27 16:03:45 -05:00
Corey Minyard eae4a36a68 ipmi: Check that the device type is BMC when scanning device
Just an added safety check.

Signed-off-by: Corey Minyard <cminyard@mvista.com>
2017-09-27 16:03:45 -05:00
Corey Minyard f33e4df83e ipmi: Move bmc find routing to below bmc device type
No functional change, this is for a later change that uses the
bmc device type.

Signed-off-by: Corey Minyard <cminyard@mvista.com>
2017-09-27 16:03:45 -05:00
Corey Minyard 72630d9a01 ipmi: Fix getting the GUID data
It was off by one.

Signed-off-by: Corey Minyard <cminyard@mvista.com>
2017-09-27 16:03:45 -05:00
Bhumika Goyal e6dd76a6e9 IPMI: make ipmi_poweroff_handler const
Make this const as it is only passed to a const argument of the function
ipmi_create_user.

Signed-off-by: Bhumika Goyal <bhumirks@gmail.com>
Signed-off-by: Corey Minyard <cminyard@mvista.com>
2017-09-27 16:03:45 -05:00
Corey Minyard 1c9f98d1bf ipmi: Make IPMI panic strings always available
They were set by config items, but people complained that they were
never turned on.  So have them always available and enabled by a
module parameter.

Signed-off-by: Corey Minyard <cminyard@mvista.com>
2017-09-27 16:03:45 -05:00
Colin Ian King b72fce52a1 char: ipmi: make function ipmi_get_info_from_resources static
The function ipmi_get_info_from_resources is local to the source and
does not need to be in global scope, so make it static.  Add in
newline to function declaration to make it checkpatch warning clean.

Cleans up sparse warnings:
symbol 'ipmi_get_info_from_resources' was not declared. Should it
be static?

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Corey Minyard <cminyard@mvista.com>
2017-09-27 16:03:45 -05:00
Corey Minyard 392a17b10e ipmi: fix unsigned long underflow
When I set the timeout to a specific value such as 500ms, the timeout
event will not happen in time due to the overflow in function
check_msg_timeout:
...
	ent->timeout -= timeout_period;
	if (ent->timeout > 0)
		return;
...

The type of timeout_period is long, but ent->timeout is unsigned long.
This patch makes the type consistent.

Reported-by: Weilong Chen <chenweilong@huawei.com>
Signed-off-by: Corey Minyard <cminyard@mvista.com>
Tested-by: Weilong Chen <chenweilong@huawei.com>
Cc: <stable@vger.kernel.org> # 3.16.x
2017-09-27 16:03:45 -05:00
Hanjun Guo 719c1b3810 char: ipmi: eliminate misleading print info when being probed via ACPI
When ipmi is probed via ACPI, the boot log shows

[   17.945139] ipmi_si IPI0001:00: probing via device tree
[   17.950369] ipmi_si IPI0001:00: ipmi_si: probing via ACPI
[   17.955795] ipmi_si IPI0001:00: [io  0x00e4-0x3fff] regsize 1 spacing 1 irq 0
[   17.962932] ipmi_si: Adding ACPI-specified bt state machine

which "ipmi_si IPI0001:00: probing via device tree" is misleading
with a ACPI HID "IPI0001" but probing via DT.

Eliminate this misleading print info by checking of_node is valid
or not before calling of_ipmi_probe().

Signed-off-by: Hanjun Guo <hanjun.guo@linaro.org>
Signed-off-by: Corey Minyard <cminyard@mvista.com>
2017-09-27 16:03:45 -05:00
Linus Torvalds 1436ab068d Merge branch 'next-tpm' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security
Pull TPM updates from James Morris:
 "Here are the TPM updates from Jarkko for v4.14, which I've placed in
  their own branch (next-tpm). I ended up cherry-picking them as other
  changes had been made in Jarkko's branch after he sent me his original
  pull request.

  I plan on maintaining a separate branch for TPM (and other security
  subsystems) from now on.

  From Jarkko: 'Not much this time except a few fixes'"

* 'next-tpm' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security:
  tpm: ibmvtpm: simplify crq initialization and document crq format
  tpm: replace msleep() with  usleep_range() in TPM 1.2/2.0 generic drivers
  Documentation: tpm: add powered-while-suspended binding documentation
  tpm: tpm_crb: constify acpi_device_id.
  tpm: vtpm: constify vio_device_id
2017-09-24 11:34:28 -07:00
Michal Suchanek fb154e0e0a tpm: ibmvtpm: simplify crq initialization and document crq format
The crq is passed in registers and is the same on BE and LE hosts.
However, current implementation allocates a structure on-stack to
represent the crq, initializes the members swapping them to BE, and
loads the structure swapping it from BE. This is pointless and causes
GCC warnings about ununitialized members. Get rid of the structure and
the warnings.

Signed-off-by: Michal Suchanek <msuchanek@suse.de>
Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Signed-off-by: James Morris <james.l.morris@oracle.com>
2017-09-23 21:51:38 -07:00
Hamza Attak 9f3fc7bcdd tpm: replace msleep() with usleep_range() in TPM 1.2/2.0 generic drivers
The patch simply replaces all msleep function calls with usleep_range calls
in the generic drivers.

Tested with an Infineon TPM 1.2, using the generic tpm-tis module, for a
thousand PCR extends, we see results going from 1m57s unpatched to 40s
with the new patch. We obtain similar results when using the original and
patched tpm_infineon driver, which is also part of the patch.
Similarly with a STM TPM 2.0, using the CRB driver, it takes about 20ms per
extend unpatched and around 7ms with the new patch.

Note that the PCR consistency is untouched with this patch, each TPM has
been tested with 10 million extends and the aggregated PCR value is
continuously verified to be correct.

As an extension of this work, this could potentially and easily be applied
to other vendor's drivers. Still, these changes are not included in the
proposed patch as they are untested.

Signed-off-by: Hamza Attak <hamza@hpe.com>
Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Tested-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Signed-off-by: James Morris <james.l.morris@oracle.com>
2017-09-23 21:51:00 -07:00
Arvind Yadav e1ec650f9a tpm: tpm_crb: constify acpi_device_id.
acpi_device_id are not supposed to change at runtime. All functions
working with acpi_device_id provided by <acpi/acpi_bus.h> work with
const acpi_device_id. So mark the non-const structs as const.

File size before:
   text	   data	    bss	    dec	    hex	filename
   4198	    608	      0	   4806	   12c6	drivers/char/tpm/tpm_crb.o

File size After adding 'const':
   text	   data	    bss	    dec	    hex	filename
   4262	    520	      0	   4782	   12ae	drivers/char/tpm/tpm_crb.o

Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Tested-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Signed-off-by: James Morris <james.l.morris@oracle.com>
2017-09-23 21:49:52 -07:00
Arvind Yadav c2a9c4bf03 tpm: vtpm: constify vio_device_id
vio_device_id are not supposed to change at runtime. All functions
working with vio_device_id provided by <asm/vio.h> work with
const vio_device_id. So mark the non-const structs as const.

Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Reviewed-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Signed-off-by: James Morris <james.l.morris@oracle.com>
2017-09-23 21:48:56 -07:00
PrasannaKumar Muralidharan c0133b009e hwrng: timeriomem - Remove 'max < 4' condition check
In read routiene max is always >= 4. The check whether 'max < 4' is not
necessary. Remove it.

Signed-off-by: PrasannaKumar Muralidharan <prasannatsmkumar@gmail.com>
Acked-By: Rick Altherr <raltherr@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2017-09-22 17:43:14 +08:00
Arvind Yadav 677c4f4c22 hwrng: pseries - constify vio_device_id
vio_device_id are not supposed to change at runtime. All functions
working with vio_device_id provided by <asm/vio.h> work with
const vio_device_id. So mark the non-const structs as const.

Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2017-09-22 17:43:05 +08:00
Christoph Hellwig 6faadbbb7f dmi: Mark all struct dmi_system_id instances const
... and __initconst if applicable.

Based on similar work for an older kernel in the Grsecurity patch.

[JD: fix toshiba-wmi build]
[JD: add htcpen]
[JD: move __initconst where checkscript wants it]

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jean Delvare <jdelvare@suse.de>
2017-09-14 11:59:30 +02:00
Linus Torvalds 52269718dc dma-mapping updates for 4.14:
- removal of the old dma_alloc_noncoherent interface
  - remove unused flags to dma_declare_coherent_memory
  - restrict OF DMA configuration to specific physical busses
  - use the iommu mailing list for dma-mapping questions and
    patches
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Merge tag 'dma-mapping-4.14' of git://git.infradead.org/users/hch/dma-mapping

Pull dma-mapping updates from Christoph Hellwig:

 - removal of the old dma_alloc_noncoherent interface

 - remove unused flags to dma_declare_coherent_memory

 - restrict OF DMA configuration to specific physical busses

 - use the iommu mailing list for dma-mapping questions and patches

* tag 'dma-mapping-4.14' of git://git.infradead.org/users/hch/dma-mapping:
  dma-coherent: fix dma_declare_coherent_memory() logic error
  ARM: imx: mx31moboard: Remove unused 'dma' variable
  dma-coherent: remove an unused variable
  MAINTAINERS: use the iommu list for the dma-mapping subsystem
  dma-coherent: remove the DMA_MEMORY_MAP and DMA_MEMORY_IO flags
  dma-coherent: remove the DMA_MEMORY_INCLUDES_CHILDREN flag
  of: restrict DMA configuration
  dma-mapping: remove dma_alloc_noncoherent and dma_free_noncoherent
  i825xx: switch to switch to dma_alloc_attrs
  au1000_eth: switch to dma_alloc_attrs
  sgiseeq: switch to dma_alloc_attrs
  dma-mapping: reduce dma_mapping_error inline bloat
2017-09-12 13:30:06 -07:00
Linus Torvalds 80cee03bf1 Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
Pull crypto updates from Herbert Xu:
 "Here is the crypto update for 4.14:

  API:
   - Defer scompress scratch buffer allocation to first use.
   - Add __crypto_xor that takes separte src and dst operands.
   - Add ahash multiple registration interface.
   - Revamped aead/skcipher algif code to fix async IO properly.

  Drivers:
   - Add non-SIMD fallback code path on ARM for SVE.
   - Add AMD Security Processor framework for ccp.
   - Add support for RSA in ccp.
   - Add XTS-AES-256 support for CCP version 5.
   - Add support for PRNG in sun4i-ss.
   - Add support for DPAA2 in caam.
   - Add ARTPEC crypto support.
   - Add Freescale RNGC hwrng support.
   - Add Microchip / Atmel ECC driver.
   - Add support for STM32 HASH module"

* 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (116 commits)
  crypto: af_alg - get_page upon reassignment to TX SGL
  crypto: cavium/nitrox - Fix an error handling path in 'nitrox_probe()'
  crypto: inside-secure - fix an error handling path in safexcel_probe()
  crypto: rockchip - Don't dequeue the request when device is busy
  crypto: cavium - add release_firmware to all return case
  crypto: sahara - constify platform_device_id
  MAINTAINERS: Add ARTPEC crypto maintainer
  crypto: axis - add ARTPEC-6/7 crypto accelerator driver
  crypto: hash - add crypto_(un)register_ahashes()
  dt-bindings: crypto: add ARTPEC crypto
  crypto: algif_aead - fix comment regarding memory layout
  crypto: ccp - use dma_mapping_error to check map error
  lib/mpi: fix build with clang
  crypto: sahara - Remove leftover from previous used spinlock
  crypto: sahara - Fix dma unmap direction
  crypto: af_alg - consolidation of duplicate code
  crypto: caam - Remove unused dentry members
  crypto: ccp - select CONFIG_CRYPTO_RSA
  crypto: ccp - avoid uninitialized variable warning
  crypto: serpent - improve __serpent_setkey with UBSAN
  ...
2017-09-06 15:17:17 -07:00
Linus Torvalds bafb0762cb Char/Misc drivers for 4.14-rc1
Here is the big char/misc driver update for 4.14-rc1.
 
 Lots of different stuff in here, it's been an active development cycle
 for some reason.  Highlights are:
   - updated binder driver, this brings binder up to date with what
     shipped in the Android O release, plus some more changes that
     happened since then that are in the Android development trees.
   - coresight updates and fixes
   - mux driver file renames to be a bit "nicer"
   - intel_th driver updates
   - normal set of hyper-v updates and changes
   - small fpga subsystem and driver updates
   - lots of const code changes all over the driver trees
   - extcon driver updates
   - fmc driver subsystem upadates
   - w1 subsystem minor reworks and new features and drivers added
   - spmi driver updates
 
 Plus a smattering of other minor driver updates and fixes.
 
 All of these have been in linux-next with no reported issues for a
 while.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'char-misc-4.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

Pull char/misc driver updates from Greg KH:
 "Here is the big char/misc driver update for 4.14-rc1.

  Lots of different stuff in here, it's been an active development cycle
  for some reason. Highlights are:

   - updated binder driver, this brings binder up to date with what
     shipped in the Android O release, plus some more changes that
     happened since then that are in the Android development trees.

   - coresight updates and fixes

   - mux driver file renames to be a bit "nicer"

   - intel_th driver updates

   - normal set of hyper-v updates and changes

   - small fpga subsystem and driver updates

   - lots of const code changes all over the driver trees

   - extcon driver updates

   - fmc driver subsystem upadates

   - w1 subsystem minor reworks and new features and drivers added

   - spmi driver updates

  Plus a smattering of other minor driver updates and fixes.

  All of these have been in linux-next with no reported issues for a
  while"

* tag 'char-misc-4.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (244 commits)
  ANDROID: binder: don't queue async transactions to thread.
  ANDROID: binder: don't enqueue death notifications to thread todo.
  ANDROID: binder: Don't BUG_ON(!spin_is_locked()).
  ANDROID: binder: Add BINDER_GET_NODE_DEBUG_INFO ioctl
  ANDROID: binder: push new transactions to waiting threads.
  ANDROID: binder: remove proc waitqueue
  android: binder: Add page usage in binder stats
  android: binder: fixup crash introduced by moving buffer hdr
  drivers: w1: add hwmon temp support for w1_therm
  drivers: w1: refactor w1_slave_show to make the temp reading functionality separate
  drivers: w1: add hwmon support structures
  eeprom: idt_89hpesx: Support both ACPI and OF probing
  mcb: Fix an error handling path in 'chameleon_parse_cells()'
  MCB: add support for SC31 to mcb-lpc
  mux: make device_type const
  char: virtio: constify attribute_group structures.
  Documentation/ABI: document the nvmem sysfs files
  lkdtm: fix spelling mistake: "incremeted" -> "incremented"
  perf: cs-etm: Fix ETMv4 CONFIGR entry in perf.data file
  nvmem: include linux/err.h from header
  ...
2017-09-05 11:08:17 -07:00
Linus Torvalds 44b1671fae Driver core update for 4.14-rc1
Here is the "big" driver core update for 4.14-rc1.
 
 It's really not all that big, the largest thing here being some firmware
 tests to help ensure that that crazy api is working properly.
 
 There's also a new uevent for when a driver is bound or unbound from a
 device, fixing a hole in the driver model that's been there since the
 very beginning.  Many thanks to Dmitry for being persistent and pointing
 out how wrong I was about this all along :)
 
 Patches for the new uevents are already in the systemd tree, if people
 want to play around with them.
 
 Otherwise just a number of other small api changes and updates here,
 nothing major.  All of these patches have been in linux-next for a
 while with no reported issues.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'driver-core-4.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

Pull driver core update from Greg KH:
 "Here is the "big" driver core update for 4.14-rc1.

  It's really not all that big, the largest thing here being some
  firmware tests to help ensure that that crazy api is working properly.

  There's also a new uevent for when a driver is bound or unbound from a
  device, fixing a hole in the driver model that's been there since the
  very beginning. Many thanks to Dmitry for being persistent and
  pointing out how wrong I was about this all along :)

  Patches for the new uevents are already in the systemd tree, if people
  want to play around with them.

  Otherwise just a number of other small api changes and updates here,
  nothing major. All of these patches have been in linux-next for a
  while with no reported issues"

* tag 'driver-core-4.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (28 commits)
  driver core: bus: Fix a potential double free
  Do not disable driver and bus shutdown hook when class shutdown hook is set.
  base: topology: constify attribute_group structures.
  base: Convert to using %pOF instead of full_name
  kernfs: Clarify lockdep name for kn->count
  fbdev: uvesafb: remove DRIVER_ATTR() usage
  xen: xen-pciback: remove DRIVER_ATTR() usage
  driver core: Document struct device:dma_ops
  mod_devicetable: Remove excess description from structured comment
  test_firmware: add batched firmware tests
  firmware: enable a debug print for batched requests
  firmware: define pr_fmt
  firmware: send -EINTR on signal abort on fallback mechanism
  test_firmware: add test case for SIGCHLD on sync fallback
  initcall_debug: add deferred probe times
  Input: axp20x-pek - switch to using devm_device_add_group()
  Input: synaptics_rmi4 - use devm_device_add_group() for attributes in F01
  Input: gpio_keys - use devm_device_add_group() for attributes
  driver core: add devm_device_add_group() and friends
  driver core: add device_{add|remove}_group() helpers
  ...
2017-09-05 10:41:21 -07:00
Linus Torvalds f32c9e059e Merge branch 'parisc-4.14-1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux
Pull parisc updates from Helge Deller:
 "Major changes include:

   - Full support of the firmware Page Deallocation Table with
     MADV_HWPOISON and MADV_SOFT_OFFLINE. A kernel thread scans
     regularily for new bad memory pages.

   - Full support for self-extracting kernel.

   - Added UBSAN support.

   - Lots of section mismatch fixes across all parisc drivers.

   - Added examples for %pF and %pS usage in printk-formats.txt"

* 'parisc-4.14-1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux: (28 commits)
  printk-formats.txt: Add examples for %pF and %pS usage
  parisc: Fix up devices below a PCI-PCI MegaRAID controller bridge
  parisc/core: Fix section mismatches
  parisc/ipmi_si_intf: Fix section mismatches on parisc platform
  parisc/input/hilkbd: Fix section mismatches
  parisc/net/lasi_82596: Fix section mismatches
  parisc/serio: Fix section mismatches in gscps2 and hp_sdc drivers
  parisc: Fix section mismatches in parisc core drivers
  parisc/parport_gsc: Fix section mismatches
  parisc/scsi/lasi700: Fix section mismatches
  parisc/scsi/zalon: Fix section mismatches
  parisc/8250_gsc: Fix section mismatches
  parisc/mux: Fix section mismatches
  parisc/sticore: Fix section mismatches
  parisc/harmony: Fix section mismatches
  parisc: Wire up support for self-extracting kernel
  parisc: Make existing core files reuseable for bootloader
  parisc: Add core code for self-extracting kernel
  parisc: Enable UBSAN support
  parisc/random: Add machine specific randomness
  ...
2017-09-05 09:37:11 -07:00
Linus Torvalds b0c79f49c3 Merge branch 'x86-asm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 asm updates from Ingo Molnar:

 - Introduce the ORC unwinder, which can be enabled via
   CONFIG_ORC_UNWINDER=y.

   The ORC unwinder is a lightweight, Linux kernel specific debuginfo
   implementation, which aims to be DWARF done right for unwinding.
   Objtool is used to generate the ORC unwinder tables during build, so
   the data format is flexible and kernel internal: there's no
   dependency on debuginfo created by an external toolchain.

   The ORC unwinder is almost two orders of magnitude faster than the
   (out of tree) DWARF unwinder - which is important for perf call graph
   profiling. It is also significantly simpler and is coded defensively:
   there has not been a single ORC related kernel crash so far, even
   with early versions. (knock on wood!)

   But the main advantage is that enabling the ORC unwinder allows
   CONFIG_FRAME_POINTERS to be turned off - which speeds up the kernel
   measurably:

   With frame pointers disabled, GCC does not have to add frame pointer
   instrumentation code to every function in the kernel. The kernel's
   .text size decreases by about 3.2%, resulting in better cache
   utilization and fewer instructions executed, resulting in a broad
   kernel-wide speedup. Average speedup of system calls should be
   roughly in the 1-3% range - measurements by Mel Gorman [1] have shown
   a speedup of 5-10% for some function execution intense workloads.

   The main cost of the unwinder is that the unwinder data has to be
   stored in RAM: the memory cost is 2-4MB of RAM, depending on kernel
   config - which is a modest cost on modern x86 systems.

   Given how young the ORC unwinder code is it's not enabled by default
   - but given the performance advantages the plan is to eventually make
   it the default unwinder on x86.

   See Documentation/x86/orc-unwinder.txt for more details.

 - Remove lguest support: its intended role was that of a temporary
   proof of concept for virtualization, plus its removal will enable the
   reduction (removal) of the paravirt API as well, so Rusty agreed to
   its removal. (Juergen Gross)

 - Clean up and fix FSGS related functionality (Andy Lutomirski)

 - Clean up IO access APIs (Andy Shevchenko)

 - Enhance the symbol namespace (Jiri Slaby)

* 'x86-asm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (47 commits)
  objtool: Handle GCC stack pointer adjustment bug
  x86/entry/64: Use ENTRY() instead of ALIGN+GLOBAL for stub32_clone()
  x86/fpu/math-emu: Add ENDPROC to functions
  x86/boot/64: Extract efi_pe_entry() from startup_64()
  x86/boot/32: Extract efi_pe_entry() from startup_32()
  x86/lguest: Remove lguest support
  x86/paravirt/xen: Remove xen_patch()
  objtool: Fix objtool fallthrough detection with function padding
  x86/xen/64: Fix the reported SS and CS in SYSCALL
  objtool: Track DRAP separately from callee-saved registers
  objtool: Fix validate_branch() return codes
  x86: Clarify/fix no-op barriers for text_poke_bp()
  x86/switch_to/64: Rewrite FS/GS switching yet again to fix AMD CPUs
  selftests/x86/fsgsbase: Test selectors 1, 2, and 3
  x86/fsgsbase/64: Report FSBASE and GSBASE correctly in core dumps
  x86/fsgsbase/64: Fully initialize FS and GS state in start_thread_common
  x86/asm: Fix UNWIND_HINT_REGS macro for older binutils
  x86/asm/32: Fix regs_get_register() on segment registers
  x86/xen/64: Rearrange the SYSCALL entries
  x86/asm/32: Remove a bunch of '& 0xffff' from pt_regs segment reads
  ...
2017-09-04 09:52:57 -07:00
Christoph Hellwig b32dbc1e0b dma-coherent: remove the DMA_MEMORY_INCLUDES_CHILDREN flag
This flag was never implemented or used.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Robin Murphy <robin.murphy@arm.com>
2017-09-01 09:50:39 +02:00
Michal Suchanek 7521621e60 Do not disable driver and bus shutdown hook when class shutdown hook is set.
As seen from the implementation of the single class shutdown hook this
is not very sound design.

Rename the class shutdown hook to shutdown_pre to make it clear it runs
before the driver shutdown hook.

Signed-off-by: Michal Suchanek <msuchanek@suse.de>
Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-08-28 18:02:46 +02:00
Arvind Yadav ac317e2767 char: virtio: constify attribute_group structures.
attribute_group are not supposed to change at runtime. All functions
working with attribute_group provided by <linux/sysfs.h> work with
const attribute_group. So mark the non-const structs as const.

Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-08-28 17:57:53 +02:00
Arvind Yadav 0faef109bd char: tlclk: constify attribute_group structures.
attribute_group are not supposed to change at runtime. All functions
working with attribute_group provided by <linux/sysfs.h> work with
const attribute_group. So mark the non-const structs as const.

Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-08-28 17:15:16 +02:00
Arvind Yadav 2c9c4ae657 applicom: constify pci_device_id.
pci_device_id are not supposed to change at runtime. All functions
working with pci_device_id provided by <linux/pci.h> work with
const pci_device_id. So mark the non-const structs as const.

Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-08-28 17:11:28 +02:00
Nava kishore Manne 5cb95fae7a char: xilinx_hwicap: Fix warnings in the driver
This patch fixes the below warning
        --> Use #include <linux/io.h> instead of <asm/io.h>
        --> Use #include <linux/uaccess.h> instead of <asm/uaccess.h>
        --> please, no space before tabs
        --> Block comments use a trailing */ on a separate line
        --> Possible unnecessary 'out of memory' message
        --> Block comments use * on subsequent lines
        --> Block comments use a trailing */ on a separate line
        --> braces {} are not necessary for any arm of this statement
        --> DT compatible string "xlnx,opb-hwicap-1.00.b"
	    appears un-documented
        --> DT compatible string "xlnx,xps-hwicap-1.00.a"
            appears un-documented

Signed-off-by: Nava kishore Manne <navam@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-08-28 17:04:47 +02:00
Nava kishore Manne ef2b56df5a char: xilinx_hwicap: Fix kernel doc warnings
This patch fixes the kernel doc warnings in the driver.

Signed-off-by: Nava kishore Manne <navam@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-08-28 17:04:47 +02:00
Juergen Gross ecda85e702 x86/lguest: Remove lguest support
Lguest seems to be rather unused these days. It has seen only patches
ensuring it still builds the last two years and its official state is
"Odd Fixes".

Remove it in order to be able to clean up the paravirt code.

Signed-off-by: Juergen Gross <jgross@suse.com>
Acked-by: Rusty Russell <rusty@rustcorp.com.au>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: boris.ostrovsky@oracle.com
Cc: lguest@lists.ozlabs.org
Cc: rusty@rustcorp.com.au
Cc: xen-devel@lists.xenproject.org
Link: http://lkml.kernel.org/r/20170816173157.8633-3-jgross@suse.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2017-08-24 09:57:28 +02:00
Helge Deller 0618cdfaeb parisc/ipmi_si_intf: Fix section mismatches on parisc platform
Additionally add a MODULE_DEVICE_TABLE entry so that udev
can load the driver automatically.

Signed-off-by: Helge Deller <deller@gmx.de>
2017-08-22 16:34:37 +02:00
Dave Airlie 0c697fafc6 Linux 4.13-rc5
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Backmerge tag 'v4.13-rc5' into drm-next

Linux 4.13-rc5

There's a really nasty nouveau collision, hopefully someone can take a look
once I pushed this out.
2017-08-15 16:16:58 +10:00
Greg Kroah-Hartman d985524680 Merge 4.13-rc5 into char-misc-next
We want the firmware, and other changes, in here as well.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-08-14 13:29:31 -07:00
Helge Deller 51d96dc2e2 random: fix warning message on ia64 and parisc
Fix the warning message on the parisc and IA64 architectures to show the
correct function name of the caller by using %pS instead of %pF. The
message is printed with the value of _RET_IP_ which calls
__builtin_return_address(0) and as such returns the IP address caller
instead of pointer to a function descriptor of the caller.

The effect of this patch is visible on the parisc and ia64 architectures
only since those are the ones which use function descriptors while on
all others %pS and %pF will behave the same.

Cc: Theodore Ts'o <tytso@mit.edu>
Cc: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: Helge Deller <deller@gmx.de>
Fixes: eecabf5674 ("random: suppress spammy warnings about unseeded randomness")
Fixes: d06bfd1989 ("random: warn when kernel uses unseeded randomness")
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-08-08 09:36:46 -07:00
Arvind Yadav d720661291 agp: nvidia: constify pci_device_id.
pci_device_id are not supposed to change at runtime. All functions
working with pci_device_id provided by <linux/pci.h> work with
const pci_device_id. So mark the non-const structs as const.

Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2017-08-04 16:59:50 +10:00
Arvind Yadav 75383dd348 agp: amd64: constify pci_device_id.
pci_device_id are not supposed to change at runtime. All functions
working with pci_device_id provided by <linux/pci.h> work with
const pci_device_id. So mark the non-const structs as const.

Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2017-08-04 16:59:49 +10:00
Arvind Yadav f2149f0af3 agp: sis: constify pci_device_id.
pci_device_id are not supposed to change at runtime. All functions
working with pci_device_id provided by <linux/pci.h> work with
const pci_device_id. So mark the non-const structs as const.

Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2017-08-04 16:59:48 +10:00
Arvind Yadav 0fa02c658a agp: efficeon: constify pci_device_id.
pci_device_id are not supposed to change at runtime. All functions
working with pci_device_id provided by <linux/pci.h> work with
const pci_device_id. So mark the non-const structs as const.

Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2017-08-04 16:59:48 +10:00
Arvind Yadav 11cdae9a5f agp: ati: constify pci_device_id.
pci_device_id are not supposed to change at runtime. All functions
working with pci_device_id provided by <linux/pci.h> work with
const pci_device_id. So mark the non-const structs as const.

Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2017-08-04 16:59:47 +10:00
Arvind Yadav e4e22911b3 agp: ali: constify pci_device_id.
pci_device_id are not supposed to change at runtime. All functions
working with pci_device_id provided by <linux/pci.h> work with
const pci_device_id. So mark the non-const structs as const.

Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2017-08-04 16:59:47 +10:00
Arvind Yadav 84a6bf7fd7 agp: intel: constify pci_device_id.
pci_device_id are not supposed to change at runtime. All functions
working with pci_device_id provided by <linux/pci.h> work with
const pci_device_id. So mark the non-const structs as const.

Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2017-08-04 16:59:46 +10:00
Arvind Yadav b8ca53f4d0 agp: amd-k7: constify pci_device_id.
pci_device_id are not supposed to change at runtime. All functions
working with pci_device_id provided by <linux/pci.h> work with
const pci_device_id. So mark the non-const structs as const.

Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2017-08-04 16:59:45 +10:00
Arvind Yadav ba67a31aac agp: uninorth: constify pci_device_id.
pci_device_id are not supposed to change at runtime. All functions
working with pci_device_id provided by <linux/pci.h> work with
const pci_device_id. So mark the non-const structs as const.

Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2017-08-04 16:59:43 +10:00
Martin Kaiser 1d5449445b hwrng: mx-rngc - add a driver for Freescale RNGC
The driver is ported from Freescale's Linux git and can be
found in the

	vendor/freescale/imx_2.6.35_maintain

branch.

The driver supports both RNG version C that's part of some Freescale
i.MX3 SoCs and version B that is available on i.MX2x chipsets.

Signed-off-by: Steffen Trumtrar <s.trumtrar@pengutronix.de>
Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Reviewed-by: PrasannaKumar Muralidharan <prasannatsmkumar@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2017-08-03 14:00:21 +08:00
PrasannaKumar Muralidharan 60f3aaee73 hwrng: Kconfig - Correct help text about feeding entropy pool
Modify Kconfig help text to reflect the fact that random data from hwrng
is fed into kernel random number generator's entropy pool.

Signed-off-by: PrasannaKumar Muralidharan <prasannatsmkumar@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2017-08-03 13:52:45 +08:00
Harald Freudenberger 10a515ddb5 hwrng: remember rng chosen by user
When a user chooses a rng source via sysfs attribute
this rng should be sticky, even when other sources
with better quality to register. This patch introduces
a simple way to remember the user's choice. This is
reflected by a new sysfs attribute file 'rng_selected'
which shows if the current rng has been chosen by
userspace. The new attribute file shows '1' for user
selected rng and '0' otherwise.

Signed-off-by: Harald Freudenberger <freude@linux.vnet.ibm.com>
Reviewed-by: PrasannaKumar Muralidharan <prasannatsmkumar@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2017-07-18 18:16:09 +08:00
Harald Freudenberger 2bbb698388 hwrng: use rng source with best quality
This patch rewoks the hwrng to always use the
rng source with best entropy quality.

On registation and unregistration the hwrng now
tries to choose the best (= highest quality value)
rng source. The handling of the internal list
of registered rng sources is now always sorted
by quality and the top most rng chosen.

Signed-off-by: Harald Freudenberger <freude@linux.vnet.ibm.com>
Reviewed-by: PrasannaKumar Muralidharan <prasannatsmkumar@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2017-07-18 18:16:08 +08:00
Guoqing Jiang ba8848d415 ppdev: remove unused ROUND_UP macro
This macro is not used after commit 3b9ab374a1
("ppdev: convert to y2038 safe"), so let's remove
it.

Signed-off-by: Guoqing Jiang <gqjiang@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-07-17 17:23:17 +02:00