Commit Graph

561793 Commits

Author SHA1 Message Date
Naoya Horiguchi a88c769548 mm: hugetlb: fix hugepage memory leak caused by wrong reserve count
When dequeue_huge_page_vma() in alloc_huge_page() fails, we fall back on
alloc_buddy_huge_page() to directly create a hugepage from the buddy
allocator.

In that case, however, if alloc_buddy_huge_page() succeeds we don't
decrement h->resv_huge_pages, which means that successful
hugetlb_fault() returns without releasing the reserve count.  As a
result, subsequent hugetlb_fault() might fail despite that there are
still free hugepages.

This patch simply adds decrementing code on that code path.

I reproduced this problem when testing v4.3 kernel in the following situation:
 - the test machine/VM is a NUMA system,
 - hugepage overcommiting is enabled,
 - most of hugepages are allocated and there's only one free hugepage
   which is on node 0 (for example),
 - another program, which calls set_mempolicy(MPOL_BIND) to bind itself to
   node 1, tries to allocate a hugepage,
 - the allocation should fail but the reserve count is still hold.

Signed-off-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Cc: David Rientjes <rientjes@google.com>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Hillf Danton <hillf.zj@alibaba-inc.com>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Cc: <stable@vger.kernel.org> [3.16+]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-12-12 10:15:34 -08:00
Helge Deller 78c0cbffeb parisc: Disable huge pages on Mako machines
Mako-based machines (PA8800 and PA8900 CPUs) don't allow aliasing on
non-equaivalent addresses.

Signed-off-by: Helge Deller <deller@gmx.de>
2015-12-12 16:45:23 +01:00
Helge Deller 5c477b4579 parisc: Wire up mlock2 syscall
Signed-off-by: Helge Deller <deller@gmx.de>
2015-12-12 16:07:44 +01:00
Bjorn Helgaas 5f0e9b4c30 parisc: Remove unused pcibios_init_bus()
There are no callers of pcibios_init_bus(), so remove it.

Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Helge Deller <deller@gmx.de>
2015-12-12 16:07:35 +01:00
Mikulas Patocka e46e31a369 parisc iommu: fix panic due to trying to allocate too large region
When using the Promise TX2+ SATA controller on PA-RISC, the system often
crashes with kernel panic, for example just writing data with the dd
utility will make it crash.

Kernel panic - not syncing: drivers/parisc/sba_iommu.c: I/O MMU @ 000000000000a000 is out of mapping resources

CPU: 0 PID: 18442 Comm: mkspadfs Not tainted 4.4.0-rc2 #2
Backtrace:
 [<000000004021497c>] show_stack+0x14/0x20
 [<0000000040410bf0>] dump_stack+0x88/0x100
 [<000000004023978c>] panic+0x124/0x360
 [<0000000040452c18>] sba_alloc_range+0x698/0x6a0
 [<0000000040453150>] sba_map_sg+0x260/0x5b8
 [<000000000c18dbb4>] ata_qc_issue+0x264/0x4a8 [libata]
 [<000000000c19535c>] ata_scsi_translate+0xe4/0x220 [libata]
 [<000000000c19a93c>] ata_scsi_queuecmd+0xbc/0x320 [libata]
 [<0000000040499bbc>] scsi_dispatch_cmd+0xfc/0x130
 [<000000004049da34>] scsi_request_fn+0x6e4/0x970
 [<00000000403e95a8>] __blk_run_queue+0x40/0x60
 [<00000000403e9d8c>] blk_run_queue+0x3c/0x68
 [<000000004049a534>] scsi_run_queue+0x2a4/0x360
 [<000000004049be68>] scsi_end_request+0x1a8/0x238
 [<000000004049de84>] scsi_io_completion+0xfc/0x688
 [<0000000040493c74>] scsi_finish_command+0x17c/0x1d0

The cause of the crash is not exhaustion of the IOMMU space, there is
plenty of free pages. The function sba_alloc_range is called with size
0x11000, thus the pages_needed variable is 0x11. The function
sba_search_bitmap is called with bits_wanted 0x11 and boundary size is
0x10 (because dma_get_seg_boundary(dev) returns 0xffff).

The function sba_search_bitmap attempts to allocate 17 pages that must not
cross 16-page boundary - it can't satisfy this requirement
(iommu_is_span_boundary always returns true) and fails even if there are
many free entries in the IOMMU space.

How did it happen that we try to allocate 17 pages that don't cross
16-page boundary? The cause is in the function iommu_coalesce_chunks. This
function tries to coalesce adjacent entries in the scatterlist. The
function does several checks if it may coalesce one entry with the next,
one of those checks is this:

	if (startsg->length + dma_len > max_seg_size)
		break;

When it finishes coalescing adjacent entries, it allocates the mapping:

sg_dma_len(contig_sg) = dma_len;
dma_len = ALIGN(dma_len + dma_offset, IOVP_SIZE);
sg_dma_address(contig_sg) =
	PIDE_FLAG
	| (iommu_alloc_range(ioc, dev, dma_len) << IOVP_SHIFT)
	| dma_offset;

It is possible that (startsg->length + dma_len > max_seg_size) is false
(we are just near the 0x10000 max_seg_size boundary), so the funcion
decides to coalesce this entry with the next entry. When the coalescing
succeeds, the function performs
	dma_len = ALIGN(dma_len + dma_offset, IOVP_SIZE);
And now, because of non-zero dma_offset, dma_len is greater than 0x10000.
iommu_alloc_range (a pointer to sba_alloc_range) is called and it attempts
to allocate 17 pages for a device that must not cross 16-page boundary.

To fix the bug, we must make sure that dma_len after addition of
dma_offset and alignment doesn't cross the segment boundary. I.e. change
	if (startsg->length + dma_len > max_seg_size)
		break;
to
	if (ALIGN(dma_len + dma_offset + startsg->length, IOVP_SIZE) > max_seg_size)
		break;

This patch makes this change (it precalculates max_seg_boundary at the
beginning of the function iommu_coalesce_chunks). I also added a check
that the mapping length doesn't exceed dma_get_seg_boundary(dev) (it is
not needed for Promise TX2+ SATA, but it may be needed for other devices
that have dma_get_seg_boundary lower than dma_get_max_seg_size).

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Cc: stable@vger.kernel.org
Signed-off-by: Helge Deller <deller@gmx.de>
2015-12-12 16:07:25 +01:00
Kevin Hilman 7f4c977849 The i.MX fixes for 4.4, 2nd round:
- Fix vf610 SAI clock configuration bug which is discovered by the newly
   added master mode support in SAI audio driver.
 - Fix buggy L2 cache latency values in vf610 device trees, which may
   cause system hang when cpu runs at a higher frequency.
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Merge tag 'imx-fixes-4.4-2' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux into fixes

Merge "ARM: imx: fixes for 4.4, 2nd round" from Shawn Guo:

The i.MX fixes for 4.4, 2nd round:
- Fix vf610 SAI clock configuration bug which is discovered by the newly
  added master mode support in SAI audio driver.
- Fix buggy L2 cache latency values in vf610 device trees, which may
  cause system hang when cpu runs at a higher frequency.

* tag 'imx-fixes-4.4-2' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux:
  ARM: dts: vf610: use reset values for L2 cache latencies
  ARM: dts: vf610: fix clock definition for SAI2
  ARM: imx: clk-vf610: fix SAI clock tree
2015-12-11 16:14:34 -08:00
Liu Gang 6534778371 ls2080a/dts: Add little endian property for GPIO IP block
The GPIO block for ls2080a platform has little endian registers,
the GPIO driver needs this property to read/write registers by
right interface.

Signed-off-by: Liu Gang <Gang.Liu@freescale.com>
Signed-off-by: Li Yang <leoli@freescale.com>
Signed-off-by: Kevin Hilman <khilman@linaro.org>
2015-12-11 16:13:03 -08:00
Li Yang edb70e29f3 dt-bindings: define little-endian property for QorIQ GPIO
The GPIO block on different QorIQ chips could have registers in different
endianess.  Define the property to specify which endian is used by the
hardware.

Signed-off-by: Liu Gang <Gang.Liu@freescale.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Li Yang <leoli@freescale.com>
Signed-off-by: Kevin Hilman <khilman@linaro.org>
2015-12-11 16:13:02 -08:00
yangbo lu 2dd2e4d1ea ARM64: dts: ls2080a: fix eSDHC endianness
Add the "little-endian" property to fix the issue that eSDHC
is not working and dumping out "mmc0: Controller never released
inhibit bit(s)." error messages constantly.

Fixes: 5461597f6c ("dts/ls2080a: Update DTSI to add support of various peripherals")
Signed-off-by: Yangbo Lu <yangbo.lu@freescale.com>
Signed-off-by: Li Yang <leoli@freescale.com>
Signed-off-by: Kevin Hilman <khilman@linaro.org>
2015-12-11 16:13:02 -08:00
Alan Stern ad87e03213 USB: add quirk for devices with broken LPM
Some USB device / host controller combinations seem to have problems
with Link Power Management.  For example, Steinar found that his xHCI
controller wouldn't handle bandwidth calculations correctly for two
video cards simultaneously when LPM was enabled, even though the bus
had plenty of bandwidth available.

This patch introduces a new quirk flag for devices that should remain
disabled for LPM, and creates quirk entries for Steinar's devices.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Reported-by: Steinar H. Gunderson <sgunderson@bigfoot.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-12-11 15:40:51 -08:00
Mathias Nyman f69115fdbc xhci: fix usb2 resume timing and races.
According to USB 2 specs ports need to signal resume for at least 20ms,
in practice even longer, before moving to U0 state.
Both host and devices can initiate resume.

On device initiated resume, a port status interrupt with the port in resume
state in issued. The interrupt handler tags a resume_done[port]
timestamp with current time + USB_RESUME_TIMEOUT, and kick roothub timer.
Root hub timer requests for port status, finds the port in resume state,
checks if resume_done[port] timestamp passed, and set port to U0 state.

On host initiated resume, current code sets the port to resume state,
sleep 20ms, and finally sets the port to U0 state. This should also
be changed to work in a similar way as the device initiated resume, with
timestamp tagging, but that is not yet tested and will be a separate
fix later.

There are a few issues with this approach

1. A host initiated resume will also generate a resume event. The event
   handler will find the port in resume state, believe it's a device
   initiated resume, and act accordingly.

2. A port status request might cut the resume signalling short if a
   get_port_status request is handled during the host resume signalling.
   The port will be found in resume state. The timestamp is not set leading
   to time_after_eq(jiffies, timestamp) returning true, as timestamp = 0.
   get_port_status will proceed with moving the port to U0.

3. If an error, or anything else happens to the port during device
   initiated resume signalling it will leave all the device resume
   parameters hanging uncleared, preventing further suspend, returning
   -EBUSY, and cause the pm thread to busyloop trying to enter suspend.

Fix this by using the existing resuming_ports bitfield to indicate that
resume signalling timing is taken care of.
Check if the resume_done[port] is set before using it for timestamp
comparison, and also clear out any resume signalling related variables
if port is not in U0 or Resume state

This issue was discovered when a PM thread busylooped, trying to runtime
suspend the xhci USB 2 roothub on a Dell XPS

Cc: stable <stable@vger.kernel.org>
Reported-by: Daniel J Blueman <daniel@quora.org>
Tested-by: Daniel J Blueman <daniel@quora.org>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-12-11 15:40:51 -08:00
Linus Torvalds b9d85451dd Five stable fixes:
- Two DM btree bufio buffer leak fixes that resolve reported BUG_ONs
   during DM thinp metadata close's dm_bufio_client_destroy().
 
 - A DM thinp range discard fix to handle discarding a partially mapped
   range.
 
 - A DM thinp metadata snapshot fix to make sure the btree roots saved in
   the metadata snapshot are the most current.
 
 - A DM space map metadata refcounting fix that improves both DM thinp
   and DM cache metadata.
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Merge tag 'dm-4.4-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm

Pull device mapper fixes from Mike Snitzer:
 "Five stable fixes:

   - Two DM btree bufio buffer leak fixes that resolve reported BUG_ONs
     during DM thinp metadata close's dm_bufio_client_destroy().

   - A DM thinp range discard fix to handle discarding a partially
     mapped range.

   - A DM thinp metadata snapshot fix to make sure the btree roots saved
     in the metadata snapshot are the most current.

   - A DM space map metadata refcounting fix that improves both DM thinp
     and DM cache metadata"

* tag 'dm-4.4-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm:
  dm btree: fix bufio buffer leaks in dm_btree_del() error path
  dm space map metadata: fix ref counting bug when bootstrapping a new space map
  dm thin metadata: fix bug when taking a metadata snapshot
  dm thin metadata: fix bug in dm_thin_remove_range()
  dm btree: fix leak of bufio-backed block in btree_split_sibling error path
2015-12-11 11:00:30 -08:00
Linus Torvalds 732c4a9e14 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse
Pull fuse fixes from Miklos Szeredi:
 "Two bugfixes, both bound for -stable"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse:
  fuse: break infinite loop in fuse_fill_write_pages()
  cuse: fix memory leak
2015-12-11 10:56:41 -08:00
Linus Torvalds 4be460d96f Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux
Pull drm fixes from Dave Airlie:
 "Not too much this time.

   - One nouveau workaround extended to a few more GPUs
   - Some amdgpu big endian fixes, and a regression fixer
   - Some vmwgfx fixes
   - One ttm locking fix
   - One vgaarb fix"

* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux:
  vgaarb: fix signal handling in vga_get()
  radeon: Fix VCE IB test on Big-Endian systems
  radeon: Fix VCE ring test for Big-Endian systems
  radeon/cik: Fix GFX IB test on Big-Endian
  drm/amdgpu: fix the lost duplicates checking
  drm/nouveau/pmu: remove whitelist for PGOB-exit WAR, enable by default
  drm/vmwgfx: Implement the cursor_set2 callback v2
  drm/vmwgfx: fix a warning message
  drm/ttm: Fixed a read/write lock imbalance
2015-12-11 10:51:02 -08:00
Catalin Marinas 82d340081b arm64: Improve error reporting on set_pte_at() checks
Currently the BUG_ON() checks do not give enough information about the
PTEs being set. This patch changes BUG_ON to WARN_ONCE and dumps the
values of the old and new PTEs. In addition, the checks are only made if
the new PTE entry is valid.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Reported-by: Ming Lei <tom.leiming@gmail.com>
Cc: Will Deacon <will.deacon@arm.com>
2015-12-11 15:44:24 +00:00
Stefan Agner 9c17190595 ARM: dts: vf610: use reset values for L2 cache latencies
Linux on Vybrid used several different L2 latencies so far, none
of them seem to be the right ones. According to the application note
AN4947 ("Understanding Vybrid Architecture"), the tag portion runs
on CPU clock and is inside the L2 cache controller, whereas the data
portion is stored in the external SRAM running on platform clock.
Hence it is likely that the correct value requires a higher data
latency then tag latency.

These are the values which have been used so far:
- The mainline values:
  arm,data-latency = <1 1 1>;
  arm,tag-latency = <2 2 2>;
  Those values have lead to problems on higher clocks. They look
  like a poor translation from the reset values (missing +1 offset
  and a mix up between tag/latency values).
- The Linux 3.0 (SoC vendor BSP) values (converted to DT notation):
  arm,data-latency = <4 2 3>
  arm,tag-latency = <4 2 3>
  The cache initialization function along with the value matches the
  i.MX6 code from the same kernel, so it seems that those values have
  just been copied.
- The Colibri values:
  arm,data-latency = <2 1 2>;
  arm,tag-latency = <3 2 3>;
  Those were a mix between the values of the Linux 3.0 based BSP and
  the mainline values above.
- The SoC Reset values (converted to DT notation):
  arm,data-latency = <3 3 3>;
  arm,tag-latency = <2 2 2>;

So far there is no official statement on what the correct values are.
See also the related Freescale community thread:
https://community.freescale.com/message/579785#579785

For now, the reset values seem to be the best bet. Remove all other
"bogus" values and use the reset value on vf610.dtsi level.

Signed-off-by: Stefan Agner <stefan@agner.ch>
Cc: <stable@vger.kernel.org>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2015-12-11 21:32:47 +08:00
Kirill A. Shutemov 9f5bd30818 vgaarb: fix signal handling in vga_get()
There are few defects in vga_get() related to signal hadning:

  - we shouldn't check for pending signals for TASK_UNINTERRUPTIBLE
    case;

  - if we found pending signal we must remove ourself from wait queue
    and change task state back to running;

  - -ERESTARTSYS is more appropriate, I guess.

Signed-off-by: Kirill A. Shutemov <kirill@shutemov.name>
Cc: stable@vger.kernel.org
Reviewed-by: David Herrmann <dh.herrmann@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2015-12-11 14:04:44 +10:00
Dave Airlie 49307da31b Merge branch 'drm-fixes-4.4' of git://people.freedesktop.org/~agd5f/linux into drm-fixes
some big endian fixes and one regression fix.

* 'drm-fixes-4.4' of git://people.freedesktop.org/~agd5f/linux:
  radeon: Fix VCE IB test on Big-Endian systems
  radeon: Fix VCE ring test for Big-Endian systems
  radeon/cik: Fix GFX IB test on Big-Endian
  drm/amdgpu: fix the lost duplicates checking
2015-12-11 14:04:09 +10:00
Arnd Bergmann dde8fdcf66 Few fixes for omaps for v4.4-rc cycle:
- Fix clock source for ARM TWD and global timers on am437x
 
 - Always select REGULATOR_FIXED_VOLTAGE for omap2+ instead of
   when MACH_OMAP3_PANDORA is selected
 
 - Fix SPI DMA handles for dm816x as only some were mapped
 
 - Fix up mbox cells for dm816x to make mailbox usable
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Merge tag 'omap-for-v4.4/fixes-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into fixes

Merge "omap fixes against v4.4-rc4" from Tony Lindgren

Few fixes for omaps for v4.4-rc cycle:

- Fix clock source for ARM TWD and global timers on am437x

- Always select REGULATOR_FIXED_VOLTAGE for omap2+ instead of
  when MACH_OMAP3_PANDORA is selected

- Fix SPI DMA handles for dm816x as only some were mapped

- Fix up mbox cells for dm816x to make mailbox usable

* tag 'omap-for-v4.4/fixes-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
  ARM: dts: am4372: fix clock source for arm twd and global timers
  ARM: OMAP2+: enable REGULATOR_FIXED_VOLTAGE
  ARM: dts: add dm816x missing spi DT dma handles
  ARM: dts: add dm816x missing #mbox-cells
2015-12-11 00:42:38 +01:00
Arnd Bergmann ddd47fbcf6 ARM: pxa: use PWM lookup table for all machines
The recent change to use a pwm lookup table for the ezx machines
was incomplete and only changed the a780 model, but not the
other ones in the same file.

This adds the missing calls to pwm_add_table().

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Fixes: c332202289 ("ARM: pxa: ezx: Use PWM lookup table")
Acked-by: Thierry Reding <thierry.reding@gmail.com>
Acked-by: Robert Jarzmik <robert.jarzmik@free.fr>
2015-12-11 00:27:58 +01:00
Arnd Bergmann e229213dd0 Marvell Berlin fixes for 4.4-rc1 (round 1)
- fix wrong SDIO DT clocks on BG2Q
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Merge tag 'berlin-fixes-for-4.4-rc1-1' of git://git.infradead.org/users/hesselba/linux-berlin into fixes

Merge "Marvell Berlin fixes for 4.4-rc1 (round 1)" from Sebastian Hesselbarth:

- fix wrong SDIO DT clocks on BG2Q

* tag 'berlin-fixes-for-4.4-rc1-1' of git://git.infradead.org/users/hesselba/linux-berlin:
  ARM: dts: berlin: add 2nd clock for BG2Q sdhci0 and sdhci1
  ARM: dts: berlin: correct BG2Q's sdhci2 2nd clock
2015-12-11 00:24:38 +01:00
Arnd Bergmann 9421a14597 Second fixes for 4.4:
- fix of a hardware setup that prevents the sd/mmc interface to show up on
   sama5d2.
 - proper selection of pinctrl drivers. PIO4 is necessary for the sama5d2 to
   boot.
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Merge tag 'at91-4.4-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux into fixes

Merge "Second fixes for 4.4" from Alexandre Belloni:

- fix of a hardware setup that prevents the sd/mmc interface to show up on
  sama5d2.
- proper selection of pinctrl drivers. PIO4 is necessary for the sama5d2 to
  boot.

* tag 'at91-4.4-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux:
  ARM: at91: fix pinctrl driver selection
  ARM: at91/dt: add always-on to 1.8V regulator
2015-12-11 00:22:11 +01:00
Arnd Bergmann 789d73b384 Fixes for Exynos:
1. Fix potential NULL pointer dereference in Exynos PMU driver.
 2. Remove incorrect __init annotation from s3c24xx cpufreq driver
    structures.
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Merge tag 'samsung-fixes-4.4' of https://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux into fixes

Merge "Fixes for Exynos" from Krzysztof Kozlowski:

1. Fix potential NULL pointer dereference in Exynos PMU driver.
2. Remove incorrect __init annotation from s3c24xx cpufreq driver
   structures.

* tag 'samsung-fixes-4.4' of https://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux:
  cpufreq: s3c24xx: Do not mark s3c2410_plls_add as __init
  ARM: EXYNOS: Fix potential NULL pointer access in exynos_sys_powerdown_conf
2015-12-11 00:19:37 +01:00
Linus Torvalds 0bd0f1e6d4 Series of 4.4-rc fixes
Most are minor to important fixes.  There is one performance enhancement
 that I took on the grounds that failing to check if other processes can
 run before running what's intended to be a background, idle-time task
 is a bug, even though the primary effect of the fix is to improve
 performance (and it was a very simple patch).
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma

Pull rdma fixes from Doug Ledford:
 "Most are minor to important fixes.

  There is one performance enhancement that I took on the grounds that
  failing to check if other processes can run before running what's
  intended to be a background, idle-time task is a bug, even though the
  primary effect of the fix is to improve performance (and it was a very
  simple patch)"

* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma:
  IB/mlx5: Postpone remove_keys under knowledge of coming preemption
  IB/mlx4: Use vmalloc for WR buffers when needed
  IB/mlx4: Use correct order of variables in log message
  iser-target: Remove explicit mlx4 work-around
  mlx4: Expose correct max_sge_rd limit
  IB/mad: Require CM send method for everything except ClassPortInfo
  IB/cma: Add a missing rcu_read_unlock()
  IB core: Fix ib_sg_to_pages()
  IB/srp: Fix srp_map_sg_fr()
  IB/srp: Fix indirect data buffer rkey endianness
  IB/srp: Initialize dma_length in srp_map_idb
  IB/srp: Fix possible send queue overflow
  IB/srp: Fix a memory leak
  IB/sa: Put netlink request into the request list before sending
  IB/iser: use sector_div instead of do_div
  IB/core: use RCU for uverbs id lookup
  IB/qib: Minor fixes to qib per SFF 8636
  IB/core: Fix user mode post wr corruption
  IB/qib: Fix qib_mr structure
2015-12-10 14:42:22 -08:00
Jisheng Zhang b5010d2081 ARM: dts: berlin: add 2nd clock for BG2Q sdhci0 and sdhci1
We removed CLK_IGNORE_UNUSED from CLKID_SDIO's flag, so the sdhci0 and
sdhci1 don't work. We fix this by adding the optional 2nd clock for
BG2Q's sdhci0 and sdhci1. This patch brings another benefit: the 2nd
clock can be disabled during runtime pm, so saves power a bit.

Signed-off-by: Jisheng Zhang <jszhang@marvell.com>
Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
2015-12-10 21:00:24 +01:00
Jisheng Zhang 5d756147f7 ARM: dts: berlin: correct BG2Q's sdhci2 2nd clock
The optional 2nd clock is CLKID_SDIO. We removed CLK_IGNORE_UNUSED
from CLKID_SDIO's flag, so the sdhci2 doesn't work. This patch fixes
this issue by correcting the sdhci2's 2nd clock.

Signed-off-by: Jisheng Zhang <jszhang@marvell.com>
Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
2015-12-10 21:00:16 +01:00
Linus Torvalds a80c47daa8 sound fixes for 4.4-rc5
Again less intensive changes in this rc: you can find only a few
 HD-audio fixes (noise fixes for Intel Broxton chip and a few Thinkpad
 models, quirks for Alienware 17 and Packard Bell DOTS) in addition
 to a long-standing rme96 bug fix.
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Merge tag 'sound-4.4-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound

Pull sound fixes from Takashi Iwai:
 "Again less intensive changes in this rc: you can find only a few
  HD-audio fixes (noise fixes for Intel Broxton chip and a few Thinkpad
  models, quirks for Alienware 17 and Packard Bell DOTS) in addition to
  a long-standing rme96 bug fix"

* tag 'sound-4.4-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
  ALSA: hda/ca0132 - quirk for Alienware 17 2015
  ALSA: hda - Fix noise problems on Thinkpad T440s
  ALSA: hda - Fixing speaker noise on the two latest thinkpad models
  ALSA: hda - Add inverted dmic for Packard Bell DOTS
  ALSA: hda - Fix playback noise with 24/32 bit sample size on BXT
  ALSA: rme96: Fix unexpected volume reset after rate changes
2015-12-10 10:44:32 -08:00
Linus Walleij e2bf3e6eca clocksource: Mmio: remove artificial 32bit limitation
The EP93xx is registering a clocksource of 40 bits with
clocksource_mmio_init() but this is not working because of this
artificial limitation. It works fine to lift the uppe limit to
64 bits, and since cycle_t is u64, it should intuitively have been
like that from the beginning.

Fixes: 000bc17817 "ARM: ep93xx: switch to GENERIC_CLOCKEVENTS"
Reported-by: Alexander Sverdlin <alexander.sverdlin@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Cc: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: http://lkml.kernel.org/r/1449768101-6879-1-git-send-email-linus.walleij@linaro.org
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2015-12-10 19:37:18 +01:00
Marc Zyngier 8e31ed9c18 irqchip/gic-v3: Add missing include for barrier.h
Both the 32bit and 64bit versions of the GICv3 header file are using
barriers, but neglect to include barrier.h, leading to an interesting
splat in some circumstances.

Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Cc: <linux-arm-kernel@lists.infradead.org>
Cc: Jason Cooper <jason@lakedaemon.net>
Link: http://lkml.kernel.org/r/1449483072-17694-3-git-send-email-marc.zyngier@arm.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2015-12-10 19:13:26 +01:00
Marc Zyngier 059393c5bd irqchip/gic-v3: Add missing struct device_node declaration
When the GICv3 header file is used in a C file that doesn't include
any of the OF stuff, we end up with a bunch of ugly warnings.

Let's keep GCC quiet by adding a forward declaration.

Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Cc: <linux-arm-kernel@lists.infradead.org>
Cc: Jason Cooper <jason@lakedaemon.net>
Link: http://lkml.kernel.org/r/1449483072-17694-2-git-send-email-marc.zyngier@arm.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2015-12-10 19:13:26 +01:00
Joe Thornber ed8b45a367 dm btree: fix bufio buffer leaks in dm_btree_del() error path
If dm_btree_del()'s call to push_frame() fails, e.g. due to
btree_node_validator finding invalid metadata, the dm_btree_del() error
path must unlock all frames (which have active dm-bufio buffers) that
were pushed onto the del_stack.

Otherwise, dm_bufio_client_destroy() will BUG_ON() because dm-bufio
buffers have leaked, e.g.:
  device-mapper: bufio: leaked buffer 3, hold count 1, list 0

Signed-off-by: Joe Thornber <ejt@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Cc: stable@vger.kernel.org
2015-12-10 10:30:18 -05:00
Linus Torvalds 6764e5ebd5 VFIO fixes for v4.4-rc5
- Various fixes for removing redundancy, const'ifying structs,
    avoiding stack usage, fixing WARN usage (Krzysztof Kozlowski,
    Julia Lawall, Kees Cook, Dan Carpenter)
  - Revert No-IOMMU mode as the intended user has not emerged
    (Alex Williamson)
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Merge tag 'vfio-v4.4-rc5' of git://github.com/awilliam/linux-vfio

Pull VFIO fixes from Alex Williamson:

 - Various fixes for removing redundancy, const'ifying structs, avoiding
   stack usage, fixing WARN usage (Krzysztof Kozlowski, Julia Lawall,
   Kees Cook, Dan Carpenter)

 - Revert No-IOMMU mode as the intended user has not emerged (Alex
   Williamson)

* tag 'vfio-v4.4-rc5' of git://github.com/awilliam/linux-vfio:
  Revert: "vfio: Include No-IOMMU mode"
  vfio: fix a warning message
  vfio: platform: remove needless stack usage
  vfio-pci: constify pci_error_handlers structures
  vfio: Drop owner assignment from platform_driver
2015-12-09 16:52:12 -08:00
Grygorii Strashko 14054fb1da ARM: dts: am4372: fix clock source for arm twd and global timers
ARM TWD and Global timer are clocked by PERIPHCLK which is MPU_CLK/2.
But now they are clocked by dpll_mpu_m2_ck == MPU_CLK and, as result.
Timekeeping core misbehaves. For example, execution of command
"sleep 5" will take 10 sec instead of 5.

Hence, fix it by adding mpu_periphclk ("fixed-factor-clock") and use
it for clocking ARM TWD and Global timer (same way as on OMAP4).

Cc: Tony Lindgren <tony@atomide.com>
Cc: Felipe Balbi <balbi@ti.com>
Cc: Tero Kristo <t-kristo@ti.com>
Fixes:commit 8cbd4c2f6a ("arm: boot: dts: am4372: add ARM timers and SCU nodes")
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Reviewed-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2015-12-09 16:46:25 -08:00
Linus Torvalds eef121f407 DeviceTree fixes for 4.4-rc4:
- Fix incorrect warning about overlapping memory regions
 
 - Export of_irq_find_parent again which was made static in 4.4, but has
   users pending for 4.5.
 
 - Fix of_msi_map_rid declaration location
 
 - Fix re-entrancy for of_fdt_unflatten_tree
 
 - Clean-up of phys_addr_t printks
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Merge tag 'devicetree-fixes-for-4.4-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux

Pull DT fixes from Rob Herring:
 "I think this should be all for 4.4:

   - Fix incorrect warning about overlapping memory regions

   - Export of_irq_find_parent again which was made static in 4.4, but
     has users pending for 4.5.

   - Fix of_msi_map_rid declaration location

   - Fix re-entrancy for of_fdt_unflatten_tree

   - Clean-up of phys_addr_t printks"

* tag 'devicetree-fixes-for-4.4-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux:
  of/irq: move of_msi_map_rid declaration to the correct ifdef section
  of/irq: Export of_irq_find_parent again
  of/fdt: Add mutex protection for calls to __unflatten_device_tree()
  of/address: fix typo in comment block of of_translate_one()
  of: do not use 0x in front of %pa
  of: Fix comparison of reserved memory regions
2015-12-09 16:44:07 -08:00
Linus Torvalds abb7e2b3f0 One small build fix, a couple do_div() fixes, and a fix for the gpio basic
clock type are the major changes here. There's also a couple fixes for
 the TI, sunxi, and scpi clock drivers.
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Merge tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux

Pull clk fixes from Stephen Boyd:
 "One small build fix, a couple do_div() fixes, and a fix for the gpio
  basic clock type are the major changes here.  There's also a couple
  fixes for the TI, sunxi, and scpi clock drivers"

* tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux:
  clk: sunxi: pll2: Fix clock running too fast
  clk: scpi: add missing of_node_put
  clk: qoriq: fix memory leak
  imx/clk-pllv2: fix wrong do_div() usage
  imx/clk-pllv1: fix wrong do_div() usage
  clk: mmp: add linux/clk.h includes
  clk: ti: drop locking code from mux/divider drivers
  clk: ti816x: Add missing dmtimer clkdev entries
  clk: ti: fapll: fix wrong do_div() usage
  clk: ti: clkt_dpll: fix wrong do_div() usage
  clk: gpio: Get parent clk names in of_gpio_clk_setup()
2015-12-09 16:36:29 -08:00
Linus Torvalds 9a0f76fde9 Fix an Oops if an interrupt occurs at startup. This can happen on
some hardware.
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Merge tag 'for-linus-4.4-1' of git://git.code.sf.net/p/openipmi/linux-ipmi

Pull IPMI fix from Corey Minyard:
 "Fix an Oops if an interrupt occurs at startup.  This can happen on
  some hardware"

* tag 'for-linus-4.4-1' of git://git.code.sf.net/p/openipmi/linux-ipmi:
  ipmi: move timer init to before irq is setup
2015-12-09 11:57:10 -08:00
Jan Stancek 27f972d3e0 ipmi: move timer init to before irq is setup
We encountered a panic on boot in ipmi_si on a dell per320 due to an
uninitialized timer as follows.

static int smi_start_processing(void       *send_info,
                                ipmi_smi_t intf)
{
        /* Try to claim any interrupts. */
        if (new_smi->irq_setup)
                new_smi->irq_setup(new_smi);

 --> IRQ arrives here and irq handler tries to modify uninitialized timer

    which triggers BUG_ON(!timer->function) in __mod_timer().

 Call Trace:
   <IRQ>
   [<ffffffffa0532617>] start_new_msg+0x47/0x80 [ipmi_si]
   [<ffffffffa053269e>] start_check_enables+0x4e/0x60 [ipmi_si]
   [<ffffffffa0532bd8>] smi_event_handler+0x1e8/0x640 [ipmi_si]
   [<ffffffff810f5584>] ? __rcu_process_callbacks+0x54/0x350
   [<ffffffffa053327c>] si_irq_handler+0x3c/0x60 [ipmi_si]
   [<ffffffff810efaf0>] handle_IRQ_event+0x60/0x170
   [<ffffffff810f245e>] handle_edge_irq+0xde/0x180
   [<ffffffff8100fc59>] handle_irq+0x49/0xa0
   [<ffffffff8154643c>] do_IRQ+0x6c/0xf0
   [<ffffffff8100ba53>] ret_from_intr+0x0/0x11

        /* Set up the timer that drives the interface. */
        setup_timer(&new_smi->si_timer, smi_timeout, (long)new_smi);

The following patch fixes the problem.

To: Openipmi-developer@lists.sourceforge.net
To: Corey Minyard <minyard@acm.org>
CC: linux-kernel@vger.kernel.org

Signed-off-by: Jan Stancek <jstancek@redhat.com>
Signed-off-by: Tony Camuso <tcamuso@redhat.com>
Signed-off-by: Corey Minyard <cminyard@mvista.com>
Cc: stable@vger.kernel.org # Applies cleanly to 3.10-, needs small rework before
2015-12-09 13:13:06 -06:00
Sasha Levin d7e35dfa25 bitops.h: correctly handle rol32 with 0 byte shift
ROL on a 32 bit integer with a shift of 32 or more is undefined and the
result is arch-dependent. Avoid this by handling the trivial case of
roling by 0 correctly.

The trivial solution of checking if shift is 0 breaks gcc's detection
of this code as a ROL instruction, which is unacceptable.

This bug was reported and fixed in GCC
(https://gcc.gnu.org/bugzilla/show_bug.cgi?id=57157):

	The standard rotate idiom,

	  (x << n) | (x >> (32 - n))

	is recognized by gcc (for concreteness, I discuss only the case that x
	is an uint32_t here).

	However, this is portable C only for n in the range 0 < n < 32. For n
	== 0, we get x >> 32 which gives undefined behaviour according to the
	C standard (6.5.7, Bitwise shift operators). To portably support n ==
	0, one has to write the rotate as something like

	  (x << n) | (x >> ((-n) & 31))

	And this is apparently not recognized by gcc.

Note that this is broken on older GCCs and will result in slower ROL.

Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-12-09 10:35:16 -08:00
Joe Thornber 50dd842ad8 dm space map metadata: fix ref counting bug when bootstrapping a new space map
When applying block operations (BOPs) do not remove them from the
uncommitted BOP ring-buffer until after they've been applied -- in case
we recurse.

Also, perform BOP_INC operation, in dm_sm_metadata_create() and
sm_metadata_extend(), in terms of the uncommitted BOP ring-buffer rather
than using direct calls to sm_ll_inc().

Signed-off-by: Joe Thornber <ejt@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Cc: stable@vger.kernel.org
2015-12-09 13:27:25 -05:00
Joe Thornber 49e99fc717 dm thin metadata: fix bug when taking a metadata snapshot
When you take a metadata snapshot the btree roots for the mapping and
details tree need to have their reference counts incremented so they
persist for the lifetime of the metadata snap.

The roots being incremented were those currently written in the
superblock, which could possibly be out of date if concurrent IO is
triggering new mappings, breaking of sharing, etc.

Fix this by performing a commit with the metadata lock held while taking
a metadata snapshot.

Signed-off-by: Joe Thornber <ejt@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Cc: stable@vger.kernel.org
2015-12-09 13:18:12 -05:00
Greg Kroah-Hartman 73b39bb0a0 usb: fixes for-v4.4-rc5
Hopefully final set of fixes for v4.4 release cycle.
 
 There's a fix for a regression on dwc3 caused by recent changes to how
 transfers are started. We're not pre-starting interrupt endpoints
 anymore.
 
 A NULL pointer dereference fix for the MSM phy driver.
 
 The UVC gadget got a minor fix for permissions to its configfs
 attributes and, finally, two fixes for MUSB. A fix for PM runtime when
 MUSB returns EPROBE_DEFER and a fix to actually return an error in case
 we can't initialize a DMA engine.
 
 Signed-off-by: Felipe Balbi <balbi@ti.com>
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Merge tag 'fixes-for-v4.4-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb into usb-linus

Felipe writes:

usb: fixes for-v4.4-rc5

Hopefully final set of fixes for v4.4 release cycle.

There's a fix for a regression on dwc3 caused by recent changes to how
transfers are started. We're not pre-starting interrupt endpoints
anymore.

A NULL pointer dereference fix for the MSM phy driver.

The UVC gadget got a minor fix for permissions to its configfs
attributes and, finally, two fixes for MUSB. A fix for PM runtime when
MUSB returns EPROBE_DEFER and a fix to actually return an error in case
we can't initialize a DMA engine.

Signed-off-by: Felipe Balbi <balbi@ti.com>
2015-12-09 13:15:30 -05:00
Linus Torvalds 626d114f46 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull vfs fixes from Al Viro:
 "A couple of fixes, both -stable fodder (9p one all way back to 2.6.32,
  dio - to all branches where "Fix negative return from dio read beyond
  eof" will end up it; it's a fixup to commit marked for -stable)"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  fix the regression from "direct-io: Fix negative return from dio read beyond eof"
  9p: ->evict_inode() should kick out ->i_data, not ->i_mapping
2015-12-09 09:34:26 -08:00
Linus Torvalds 978d6a9041 PCI updates for v4.4:
MSI
     Only use the generic MSI layer when domain is hierarchical (Marc Zyngier)
 
   Altera host bridge driver
     Fix loop in tlp_read_packet() (Dan Carpenter)
     Fix Requester ID for config accesses (Ley Foon Tan)
     Check TLP completion status (Ley Foon Tan)
     Fix error when INTx is 4 (Ley Foon Tan)
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Merge tag 'pci-v4.4-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci

Pull PCI fixes from Bjorn Helgaas:
 "These are more fixes I'd like to have in v4.4.  Several for the Altera
  driver added for v4.4, and one for an MSI domain problem that affects
  several arm64 platforms:

  MSI:
   - Only use the generic MSI layer when domain is hierarchical (Marc
     Zyngier)

  Altera host bridge driver:
   - Fix loop in tlp_read_packet() (Dan Carpenter)
   - Fix Requester ID for config accesses (Ley Foon Tan)
   - Check TLP completion status (Ley Foon Tan)
   - Fix error when INTx is 4 (Ley Foon Tan)"

* tag 'pci-v4.4-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci:
  PCI: altera: Fix error when INTx is 4
  PCI: altera: Check TLP completion status
  PCI: altera: Fix Requester ID for config accesses
  PCI: altera: Fix loop in tlp_read_packet()
  PCI/MSI: Only use the generic MSI layer when domain is hierarchical
2015-12-09 09:26:06 -08:00
Gabriele Martino 5328e1ea87 ALSA: hda/ca0132 - quirk for Alienware 17 2015
The Alienware 17 (2015) has the same card and pin configuration of the
Alienware 15, so the same quirks must be applied.

Signed-off-by: Gabriele Martino <g.martino@gmx.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-12-09 17:06:07 +01:00
Aaro Koskinen 7d32cdef53 usb: musb: fail with error when no DMA controller set
Fail with error when no DMA controller is set.

Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: Felipe Balbi <balbi@ti.com>
2015-12-09 09:36:03 -06:00
Rob Herring eaddb57253 of/irq: move of_msi_map_rid declaration to the correct ifdef section
In checking fixes for of_irq_find_parent declaration location, I found
that of_msi_map_rid is also wrong. of_msi_map_rid is not implemented for
Sparc, so it should not be in the Sparc specific section of the header.
Move it to just depend on OF_IRQ.

Cc: Frank Rowand <frowand.list@gmail.com>
Signed-off-by: Rob Herring <robh@kernel.org>
2015-12-09 09:23:28 -06:00
Carlo Caione 4c3141e09c of/irq: Export of_irq_find_parent again
of_irq_find_parent was made static since it had no users outside of
of_irq.c. Export it again since we are going to use it again.

Signed-off-by: Carlo Caione <carlo@endlessm.com>
[robh: move of_irq_find_parent to correct ifdef section]
Signed-off-by: Rob Herring <robh@kernel.org>
2015-12-09 09:08:36 -06:00
Takashi Iwai 9a81123048 ALSA: hda - Fix noise problems on Thinkpad T440s
Lenovo Thinkpad T440s suffers from constant background noises, and it
seems to be a generic hardware issue on this model:
  https://forums.lenovo.com/t5/ThinkPad-T400-T500-and-newer-T/T440s-speaker-noise/td-p/1339883

As the noise comes from the analog loopback path, disabling the path
is the easy workaround.

Also, the machine gives significant cracking noises at PM suspend.  A
workaround found by trial-and-error is to disable the shutup callback
currently used for ALC269-variant.

This patch addresses these noise issues by introducing a new fixup
chain.  Although the same workaround might be applicable to other
Thinkpad models, it's applied only to T440s (17aa:220c) in this patch,
so far, just to be safe (you chicken!).  As a compromise, a new model
option string "tp440" is provided now, though, so that owners of other
Thinkpad models can test it more easily.

Bugzilla: https://bugzilla.opensuse.org/show_bug.cgi?id=958504
Reported-and-tested-by: Tim Hardeck <thardeck@suse.de>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-12-09 15:31:21 +01:00
Oded Gabbay 361c32d390 radeon: Fix VCE IB test on Big-Endian systems
This patch makes the VCE IB test pass on Big-Endian systems. It converts
to little-endian the contents of the VCE message.

Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
Cc: stable@vger.kernel.org
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2015-12-09 00:23:56 -05:00
Oded Gabbay 687f4b98d1 radeon: Fix VCE ring test for Big-Endian systems
This patch fixes the VCE ring test when running on Big-Endian machines.
Every write to the ring needs to be translated to little-endian.

Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
Cc: stable@vger.kernel.org
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2015-12-09 00:22:44 -05:00