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Merge tag 'media/v3.19-4' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media
Pull media fixes from Mauro Carvalho Chehab:
- fix some race conditions caused by a regression on videobuf2
- fix a interrupt release bug on cx23885
- fix support for Mygica T230 and HVR4400
- fix compilation breakage when USB is not selected on tlg2300
- fix capabilities report on ompa3isp, soc-camera, rcar_vin and
pvrusb2
* tag 'media/v3.19-4' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media:
[media] omap3isp: Correctly set QUERYCAP capabilities
[media] cx23885: fix free interrupt bug
[media] pvrusb2: fix missing device_caps in querycap
[media] vb2: fix vb2_thread_stop race conditions
[media] rcar_vin: Update device_caps and capabilities in querycap
[media] soc-camera: fix device capabilities in multiple camera host drivers
[media] Fix Mygica T230 support
[media] cx23885: Split Hauppauge WinTV Starburst from HVR4400 card entry
[media] tlg2300: Fix media dependencies
Pull btrfs fixes from Chris Mason:
"We have a few fixes in my for-linus branch.
Qu Wenruo's batch fix a regression between some our merge window pull
and the inode_cache feature. The rest are smaller bugs"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs:
btrfs: Don't call btrfs_start_transaction() on frozen fs to avoid deadlock.
btrfs: Fix the bug that fs_info->pending_changes is never cleared.
btrfs: fix state->private cast on 32 bit machines
Btrfs: fix race deleting block group from space_info->ro_bgs list
Btrfs: fix incorrect freeing in scrub_stripe
btrfs: sync ioctl, handle errors after transaction start
dell-laptop: Revert keyboard backlight sysfs support and documentation
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Merge tag 'platform-drivers-x86-v3.19-2' of git://git.infradead.org/users/dvhart/linux-platform-drivers-x86
Pull platform driver fix from Darren Hart:
"Revert keyboard backlight sysfs support and documentation.
The support for the dell-laptop keyboard backlight was flawed and the
fix:
https://lkml.org/lkml/2015/1/14/539
was more invasive that I felt comfortable sending at RC5.
This series reverts the support for the dell-laptop keyboard backlight
as well as the documentation for the newly created sysfs attributes.
We'll get this implemented correctly for 3.20"
* tag 'platform-drivers-x86-v3.19-2' of git://git.infradead.org/users/dvhart/linux-platform-drivers-x86:
Revert "platform: x86: dell-laptop: Add support for keyboard backlight"
Revert "Documentation: Add entry for dell-laptop sysfs interface"
Resource management
- Clip bridge windows to fit in upstream windows (Yinghai Lu)
Virtualization
- Mark Atheros AR93xx to avoid using bus reset (Alex Williamson)
Miscellaneous
- Update Richard Zhu's email address (Lucas Stach)
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Merge tag 'pci-v3.19-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci
Pull PCI fixes from Bjorn Helgaas:
"These are fixes for:
- a resource management problem that causes a Radeon "Fatal error
during GPU init" on machines where the BIOS programmed an invalid
Root Port window. This was a regression in v3.16.
- an Atheros AR93xx device that doesn't handle PCI bus resets
correctly. This was a regression in v3.14.
- an out-of-date email address"
* tag 'pci-v3.19-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci:
MAINTAINERS: Update Richard Zhu's email address
sparc/PCI: Clip bridge windows to fit in upstream windows
powerpc/PCI: Clip bridge windows to fit in upstream windows
parisc/PCI: Clip bridge windows to fit in upstream windows
mn10300/PCI: Clip bridge windows to fit in upstream windows
microblaze/PCI: Clip bridge windows to fit in upstream windows
ia64/PCI: Clip bridge windows to fit in upstream windows
frv/PCI: Clip bridge windows to fit in upstream windows
alpha/PCI: Clip bridge windows to fit in upstream windows
x86/PCI: Clip bridge windows to fit in upstream windows
PCI: Add pci_claim_bridge_resource() to clip window if necessary
PCI: Add pci_bus_clip_resource() to clip to fit upstream window
PCI: Pass bridge device, not bus, when updating bridge windows
PCI: Mark Atheros AR93xx to avoid bus reset
PCI: Add flag for devices where we can't use bus reset
A few bugfixes for the new DT overlay feature, documentation updates,
spelling corrections, and changes to MAINTAINERS. Nothing earth
shattering here.
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Merge tag 'devicetree-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/glikely/linux
Pull devicetree bug fixes and documentation updates from Grant Likely:
"A few bugfixes for the new DT overlay feature, documentation updates,
spelling corrections, and changes to MAINTAINERS. Nothing earth
shattering here"
* tag 'devicetree-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/glikely/linux:
of/unittest: Overlays with sub-devices tests
of/platform: Handle of_populate drivers in notifier
of/overlay: Do not generate duplicate nodes
devicetree: document the "qemu" and "virtio" vendor prefixes
devicetree: document ARM bindings for QEMU's Firmware Config interface
Documentation: of: fix typo in graph bindings
dma-mapping: fix debug print to display correct dma_pfn_offset
of: replace Asahi Kasei Corp vendor prefix
ARM: dt: GIC: Spelling s/specific/specifier/, s/flaggs/flags/
dt/bindings: arm-boards: Spelling s/pointong/pointing/
MAINTAINERS: Update DT website and git repository
MAINTAINERS: drop DT regex matching on of_get_property and of_match_table
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull kvm fixes from Paolo Bonzini:
"Three small fixes.
Two for x86 and one avoids that sparse bails out"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
KVM: x86: SYSENTER emulation is broken
KVM: x86: Fix of previously incomplete fix for CVE-2014-8480
KVM: fix sparse warning in include/trace/events/kvm.h
Pull ARM fixes from Russell King:
"Another round of small ARM fixes.
restore_user_regs early stack deallocation is buggy in the presence of
FIQs which switch to SVC mode, and could lead to corrupted registers
being returned to a user process given an inopportune FIQ event.
Another bug was spotted in the ARM perf code where it could lose track
of perf counter overflows, leading to incorrect perf results.
Lastly, a bug in arm_add_memory() was spotted where the memory sizes
aren't properly rounded. As most people pass properly rounded sizes,
this hasn't been noticed"
* 'fixes' of git://ftp.arm.linux.org.uk/~rmk/linux-arm:
ARM: 8292/1: mm: fix size rounding-down of arm_add_memory() function
ARM: 8255/1: perf: Prevent wraparound during overflow
ARM: 8266/1: Remove early stack deallocation from restore_user_regs
- Fix cleaning of .dtbs following directory restructuring
- Fix allmodconfig build breakage in -next due to missing include
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Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull two arm64 fixes from Will Deacon:
"Arm64 fixes seem to come in pairs recently. We've got a fix for
removing device-tree blobs when doing a make clean and another one
addressing a missing include, which fixes build failures in -next for
allmodconfig (spotted by Mark's buildbot).
Summary from signed tag:
- fix cleaning of .dtbs following directory restructuring
- fix allmodconfig build breakage in -next due to missing include"
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64: dump: Fix implicit inclusion of definition for PCI_IOBASE
arm64: Add dtb files to archclean rule
This reverts commit 02b2aaaa57.
This interface was determined to be flawed and required too invasive a
fix for the RC cycle. This will be revisited in 3.20.
Signed-off-by: Darren Hart <dvhart@linux.intel.com>
This reverts commit 3161293ba6.
This interface was determined to be flawed and required too invasive a
fix for the RC cycle. This will be revisited in 3.20.
Signed-off-by: Darren Hart <dvhart@linux.intel.com>
Introduce selftests for overlays using sub-devices present
in children nodes.
Signed-off-by: Pantelis Antoniou <pantelis.antoniou@konsulko.com>
Signed-off-by: Grant Likely <grant.likely@linaro.org>
SYSENTER emulation is broken in several ways:
1. It misses the case of 16-bit code segments completely (CVE-2015-0239).
2. MSR_IA32_SYSENTER_CS is checked in 64-bit mode incorrectly (bits 0 and 1 can
still be set without causing #GP).
3. MSR_IA32_SYSENTER_EIP and MSR_IA32_SYSENTER_ESP are not masked in
legacy-mode.
4. There is some unneeded code.
Fix it.
Cc: stable@vger.linux.org
Signed-off-by: Nadav Amit <namit@cs.technion.ac.il>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
STR and SLDT with rip-relative operand can cause a host kernel oops.
Mark them as DstMem as well.
Cc: stable@vger.linux.org
Signed-off-by: Nadav Amit <namit@cs.technion.ac.il>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Since c9465b4ec3 (arm64: add support to dump the kernel page tables)
allmodconfig has failed to build on arm64 as a result of:
../arch/arm64/mm/dump.c:55:20: error: 'PCI_IOBASE' undeclared here (not in a function)
Fix this by explicitly including io.h to ensure that a definition is
present.
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
The old cryptic address bounces, fix it by using a properly working one.
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Richard Zhu <Richard.Zhu@freescale.com>
Pull s390 fixes from Martin Schwidefsky:
"Five more bug fixes from Michael for the s390 BPF jit"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
s390/bpf: Zero extend parameters before calling C function
s390/bpf: Fix sk_load_byte_msh()
s390/bpf: Fix offset parameter for skb_copy_bits()
s390/bpf: Fix skb_copy_bits() parameter passing
s390/bpf: Fix JMP_JGE_K (A >= K) and JMP_JGT_K (A > K)
First two are minor fallout from the param rework which went in this merge
window.
Next three are a series which fixes a longstanding (but never previously
reported and unlikely , so no CC stable) race between kallsyms and freeing
the init section.
Finally, a minor cleanup as our module refcount will now be -1 during
unload.
Thanks,
Rusty.
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Merge tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux
Pull module and param fixes from Rusty Russell:
"Surprising number of fixes this merge window :(
The first two are minor fallout from the param rework which went in
this merge window.
The next three are a series which fixes a longstanding (but never
previously reported and unlikely , so no CC stable) race between
kallsyms and freeing the init section.
Finally, a minor cleanup as our module refcount will now be -1 during
unload"
* tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux:
module: make module_refcount() a signed integer.
module: fix race in kallsyms resolution during module load success.
module: remove mod arg from module_free, rename module_memfree().
module_arch_freeing_init(): new hook for archs before module->module_init freed.
param: fix uninitialized read with CONFIG_DEBUG_LOCK_ALLOC
param: initialize store function to NULL if not available.
When using overlays with drivers calling of_populate the notifier
will try to create the device twice. Using the populated bit
before proceeding protects against this.
Signed-off-by: Pantelis Antoniou <pantelis.antoniou@konsulko.com>
Signed-off-by: Grant Likely <grant.likely@linaro.org>
During the course of the rewrites a bug sneaked in when dealing
with children nodes of overlays, which ends up duplicating
sub nodes.
Simply remove the duplicate traversal of child nodes to fix.
Signed-off-by: Pantelis Antoniou <pantelis.antoniou@konsulko.com>
Signed-off-by: Grant Likely <grant.likely@linaro.org>
James Bottomley points out that it will be -1 during unload. It's
only used for diagnostics, so let's not hide that as it could be a
clue as to what's gone wrong.
Cc: Jason Wessel <jason.wessel@windriver.com>
Acked-and-documention-added-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Reviewed-by: Masami Hiramatsu <maasami.hiramatsu.pt@hitachi.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
device_caps in struct v4l2_capability were inadequately set in
VIDIOC_QUERYCAP. Fix this. Without this a WARN_ON in the v4l2 core
is triggered. This WARN_ON was added for kernel 3.19 exactly to
detect these situations.
Signed-off-by: Sakari Ailus <sakari.ailus@iki.fi>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
The VIDIOC_QUERYCAP function should set device_caps, but this was missing.
In addition, it set the version field as well, but that should be done by
the core, not by the driver.
If a driver doesn't set device_caps the v4l2 core will issue a WARN_ON, so
it's important that this is set correctly.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
The locking scheme inside the vb2 thread is unsafe when stopping the
thread. In particular kthread_stop was called *after* internal data
structures were cleaned up instead of doing that before. In addition,
internal vb2 functions were called after threadio->stop was set to
true and vb2_internal_streamoff was called. This is also not allowed.
All this led to a variety of race conditions and kernel warnings and/or
oopses.
Fixed by moving the kthread_stop call up before the cleanup takes
place, and by checking threadio->stop before calling internal vb2
queuing operations.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Cc: <stable@vger.kernel.org> # for v3.16 and up
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
The V4L2 API requires both .capabilities and .device_caps fields of
struct v4l2_capability to be set. Otherwise the compliance checker
complains and since commit "v4l2-ioctl: WARN_ON if querycap didn't fill
device_caps" a compile-time warning is issued. Fix this non-compliance
in the rcar_vin driver.
Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
The V4L2 API requires both .capabilities and .device_caps fields of
struct v4l2_capability to be set. Otherwise the compliance checker
complains and since commit "v4l2-ioctl: WARN_ON if querycap didn't fill
device_caps" a compile-time warning is issued. Fix this non-compliance
in several soc-camera camera host drivers.
Reported-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Tested-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Commit 2adb177e57 removed 2 devices
from the cxusb device table but failed to fix up the T230 properties
that follow, meaning that this device no longer gets detected properly.
Adjust the cxusb_table index appropriate so detection works.
Signed-off-by: Jonathan McDowell <noodles@earth.li>
Reviewed-by: Olli Salonen <olli.salonen@iki.fi>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Unconditionally attaching Si2161/Si2165 demod driver
breaks Hauppauge WinTV Starburst.
So create own card entry for this.
Add card name comments to the subsystem ids.
This fixes a regression introduced in 3.17 by
36efec48e2 ([media] cx23885: Add si2165 support for HVR-5500)
Signed-off-by: Matthias Schwarzott <zzam@gentoo.org>
Tested-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
CC: stable@vger.kernel.org # for 3.17 and upper
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
X-Patchwork-Delegate: m.chehab@samsung.com
Changeset ea2e813e8c moved the driver to staging, but it forgot to
preserve the existing dependency.
Fixes: ea2e813e8c ("[media] tlg2300: move to staging in preparation for removal")
Reported-by: Jim Davis <jim.epost@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
because gcc 4.8 for superH does not support -m32, and the recordmcount.pl
script adds "-m32" when re-compiling the object files with the mcount
locations.
I was not able to reproduce this problem, as it seems that -m32 works fine
for my cross compiler gcc 4.6.3, but I have to assume that -m32 was
deprecated somewhere between 4.6 and 4.8. As it still seems to compile
fine without -m32, I have no reason not to add this patch, as having
-m32 seems to cause trouble for others.
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Merge tag 'trace-sh-3.19' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace
Pull superh tracing fix from Steven Rostedt:
"It's been reported that function tracing does not work on the sh
architecture because gcc 4.8 for superH does not support -m32, and the
recordmcount.pl script adds "-m32" when re-compiling the object files
with the mcount locations.
I was not able to reproduce this problem, as it seems that -m32 works
fine for my cross compiler gcc 4.6.3, but I have to assume that -m32
was deprecated somewhere between 4.6 and 4.8. As it still seems to
compile fine without -m32, I have no reason not to add this patch, as
having -m32 seems to cause trouble for others"
* tag 'trace-sh-3.19' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
scripts/recordmcount.pl: There is no -m32 gcc option on Super-H anymore
The current rounding of "size" is wrong:
- If "start" is sufficiently near the next page boundary, "size"
is decremented by more than enough and the last page is lost.
- If "size" is sufficiently small, it is wrapped around and gets
a bogus value.
Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This batch contains two fixes for FireWire lib module and a quirk
for yet another Logitech WebCam. The former is the fixes for MIDI
handling I forgot to pick up during the merge window. All the
fixed code is pretty local and shouldn't give any regressions.
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Merge tag 'sound-3.19-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound fixes from Takashi Iwai:
"This batch contains two fixes for FireWire lib module and a quirk for
yet another Logitech WebCam. The former is the fixes for MIDI
handling I forgot to pick up during the merge window. All the fixed
code is pretty local and shouldn't give any regressions"
* tag 'sound-3.19-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
ALSA: usb-audio: Add mic volume fix quirk for Logitech Webcam C210
ALSA: firewire-lib: limit the MIDI data rate
ALSA: firewire-lib: remove rx_blocks_for_midi quirk
Pull drm fixes from Dave Airlie:
"Just back from LCA + some days off, had some fixes from the past 2 weeks,
Some amdkfd code removal for a feature that wasn't ready, otherwise
just one fix for core helper sleeping, exynos, i915, and radeon fixes.
I thought I had some sti fixes but they were already in, and it
confused me for a few mins this morning"
* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux:
drm: fb helper should avoid sleeping in panic context
drm/exynos: fix warning of vblank reference count
drm/exynos: remove unnecessary runtime pm operations
drm/exynos: fix reset codes for memory mapped hdmi phy
drm/radeon: use rv515_ring_start on r5xx
drm/radeon: add si dpm quirk list
drm/radeon: don't print error on -ERESTARTSYS
drm/i915: Fix mutex->owner inspection race under DEBUG_MUTEXES
drm/i915: Ban Haswell from using RCS flips
drm/i915: vlv: sanitize RPS interrupt mask during GPU idling
drm/i915: fix HW lockup due to missing RPS IRQ workaround on GEN6
drm/i915: gen9: fix RPS interrupt routing to CPU vs. GT
drm/exynos: remove the redundant machine checking code
drm/radeon: add a dpm quirk list
drm/amdkfd: Fix sparse warning (different address space)
drm/radeon: fix VM flush on CIK (v3)
drm/radeon: fix VM flush on SI (v3)
drm/radeon: fix VM flush on cayman/aruba (v3)
drm/amdkfd: Drop interrupt SW ring buffer
- Skip caching volatile registers in tps65218
- Use correct address base in tps65218
- Repair deadlock on suspend in rtsx_usb
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Merge tag 'mfd-fixes-3.19' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd
Pull MFD fixes from Lee Jones:
- Avoid platform ID collision in da9052
- Skip caching volatile registers in tps65218
- Use correct address base in tps65218
- Repair deadlock on suspend in rtsx_usb
* tag 'mfd-fixes-3.19' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd:
mfd: rtsx_usb: Fix runtime PM deadlock
mfd: tps65218: Make INT1 our status_base register
mfd: tps65218: Make INT[12] and STATUS registers volatile
mfd: da9052-core: Fix platform-device id collision
Commit 6b5fe46dfa (btrfs: do commit in sync_fs if there are pending
changes) will call btrfs_start_transaction() in sync_fs(), to handle
some operations needed to be done in next transaction.
However this can cause deadlock if the filesystem is frozen, with the
following sys_r+w output:
[ 143.255932] Call Trace:
[ 143.255936] [<ffffffff816c0e09>] schedule+0x29/0x70
[ 143.255939] [<ffffffff811cb7f3>] __sb_start_write+0xb3/0x100
[ 143.255971] [<ffffffffa040ec06>] start_transaction+0x2e6/0x5a0
[btrfs]
[ 143.255992] [<ffffffffa040f1eb>] btrfs_start_transaction+0x1b/0x20
[btrfs]
[ 143.256003] [<ffffffffa03dc0ba>] btrfs_sync_fs+0xca/0xd0 [btrfs]
[ 143.256007] [<ffffffff811f7be0>] sync_fs_one_sb+0x20/0x30
[ 143.256011] [<ffffffff811cbd01>] iterate_supers+0xe1/0xf0
[ 143.256014] [<ffffffff811f7d75>] sys_sync+0x55/0x90
[ 143.256017] [<ffffffff816c49d2>] system_call_fastpath+0x12/0x17
[ 143.256111] Call Trace:
[ 143.256114] [<ffffffff816c0e09>] schedule+0x29/0x70
[ 143.256119] [<ffffffff816c3405>] rwsem_down_write_failed+0x1c5/0x2d0
[ 143.256123] [<ffffffff8133f013>] call_rwsem_down_write_failed+0x13/0x20
[ 143.256131] [<ffffffff811caae8>] thaw_super+0x28/0xc0
[ 143.256135] [<ffffffff811db3e5>] do_vfs_ioctl+0x3f5/0x540
[ 143.256187] [<ffffffff811db5c1>] SyS_ioctl+0x91/0xb0
[ 143.256213] [<ffffffff816c49d2>] system_call_fastpath+0x12/0x17
The reason is like the following:
(Holding s_umount)
VFS sync_fs staff:
|- btrfs_sync_fs()
|- btrfs_start_transaction()
|- sb_start_intwrite()
(Waiting thaw_fs to unfreeze)
VFS thaw_fs staff:
thaw_fs()
(Waiting sync_fs to release
s_umount)
So deadlock happens.
This can be easily triggered by fstest/generic/068 with inode_cache
mount option.
The fix is to check if the fs is frozen, if the fs is frozen, just
return and waiting for the next transaction.
Cc: David Sterba <dsterba@suse.cz>
Reported-by: Gui Hecheng <guihc.fnst@cn.fujitsu.com>
Signed-off-by: Qu Wenruo <quwenruo@cn.fujitsu.com>
[enhanced comment, changed to SB_FREEZE_WRITE]
Signed-off-by: David Sterba <dsterba@suse.cz>
Signed-off-by: Chris Mason <clm@fb.com>
Fs_info->pending_changes is never cleared since the original code uses
cmpxchg(&fs_info->pending_changes, 0, 0), which will only clear it if
pending_changes is already 0.
This will cause a lot of problem when mount it with inode_cache mount
option.
If the btrfs is mounted as inode_cache, pending_changes will always be
1, even when the fs is frozen.
Signed-off-by: Qu Wenruo <quwenruo@cn.fujitsu.com>
Reviewed-by: David Sterba <dsterba@suse.cz>
Signed-off-by: David Sterba <dsterba@suse.cz>
Signed-off-by: Chris Mason <clm@fb.com>
- Remove the interrupt SW ring buffer impl. as it is not used by any module
in amdkfd.
- Fix a sparse warning
* tag 'drm-amdkfd-fixes-2015-01-13' of git://people.freedesktop.org/~gabbayo/linux:
drm/amdkfd: Fix sparse warning (different address space)
drm/amdkfd: Drop interrupt SW ring buffer
misc i915 fixes
* tag 'drm-intel-fixes-2015-01-15' of git://anongit.freedesktop.org/drm-intel:
drm/i915: Fix mutex->owner inspection race under DEBUG_MUTEXES
drm/i915: Ban Haswell from using RCS flips
drm/i915: vlv: sanitize RPS interrupt mask during GPU idling
drm/i915: fix HW lockup due to missing RPS IRQ workaround on GEN6
drm/i915: gen9: fix RPS interrupt routing to CPU vs. GT
This pull request includes below fixups,
- Remove duplicated machine checking.
. It seems that this code was added when you merged 'v3.18-rc7' into
drm-next. commit id : e8115e79aa
- Fix hdmiphy reset.
. Exynos hdmi has two interfaces to control hdmyphy, one is I2C, other
is APB bus - memory mapped I/O. So this patch makes hdmiphy reset
to be done according to interfaces, I2C or APB bus.
- And add some exception codes.
* 'exynos-drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/daeinki/drm-exynos:
drm/exynos: fix warning of vblank reference count
drm/exynos: remove unnecessary runtime pm operations
drm/exynos: fix reset codes for memory mapped hdmi phy
drm/exynos: remove the redundant machine checking code
Some radeon fixes for 3.19:
- GPUVM stability fixes
- SI dpm quirks
- Regression fixes
* 'drm-fixes-3.19' of git://people.freedesktop.org/~agd5f/linux:
drm/radeon: use rv515_ring_start on r5xx
drm/radeon: add si dpm quirk list
drm/radeon: don't print error on -ERESTARTSYS
drm/radeon: add a dpm quirk list
drm/radeon: fix VM flush on CIK (v3)
drm/radeon: fix VM flush on SI (v3)
drm/radeon: fix VM flush on cayman/aruba (v3)
Pull libata fixes from Tejun Heo:
- Bartlomiej will be co-maintaining PATA portion of libata. git
workflow will stay the same.
- sata_sil24 wasn't happy with tag ordered submission. An option to
restore the old tag allocation behavior is implemented for sil24.
- a very old race condition in PIO host state machine which can trigger
BUG fixed.
- other driver-specific changes
* 'for-3.19-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata:
libata: prevent HSM state change race between ISR and PIO
libata: allow sata_sil24 to opt-out of tag ordered submission
ata: pata_at91: depend on !ARCH_MULTIPLATFORM
ahci: Remove Device ID for Intel Sunrise Point PCH
ahci: Use dev_info() to inform about the lack of Device Sleep support
libata: Whitelist SSDs that are known to properly return zeroes after TRIM
sata_dwc_460ex: fix resource leak on error path
ata: add MAINTAINERS entry for libata PATA drivers
libata: clean up MAINTAINERS entries
libata: export ata_get_cmd_descript()
ahci_xgene: Fix the DMA state machine lockup for the ATA_CMD_PACKET PIO mode command.
ahci_xgene: Fix the endianess issue in APM X-Gene SoC AHCI SATA controller driver.
Pull workqueue fix from Tejun Heo:
"The xfs folks have been running into weird and very rare lockups for
some time now. I didn't think this could have been from workqueue
side because no one else was reporting it. This time, Eric had a
kdump which we looked into and it turned out this actually was a
workqueue bug and the bug has been there since the beginning of
concurrency managed workqueue.
A worker pool ensures forward progress of the workqueues associated
with it by always having at least one worker reserved from executing
work items. When the pool is under contention, the idle one tries to
create more workers for the pool and if that doesn't succeed quickly
enough, it calls the rescuers to the pool.
This logic had a subtle race condition in an early exit path. When a
worker invokes this manager function, the function may return %false
indicating that the caller may proceed to executing work items either
because another worker is already performing the role or conditions
have changed and the pool is no longer under contention.
The latter part depended on the assumption that whether more workers
are necessary or not remains stable while the pool is locked; however,
pool->nr_running (concurrency count) may change asynchronously and it
getting bumped from zero asynchronously could send off the last idle
worker to execute work items.
The race window is fairly narrow, and, even when it gets triggered,
the pool deadlocks iff if all work items get blocked on pending work
items of the pool, which is highly unlikely but can be triggered by
xfs.
The patch removes the race window by removing the early exit path,
which doesn't server any purpose anymore anyway"
* 'for-3.19-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq:
workqueue: fix subtle pool management issue which can stall whole worker_pool
sd_set_power_mode() in derived module drivers/mmc/host/rtsx_usb_sdmmc.c
acquires dev_mutex and then calls pm_runtime_get_sync() to make sure the
device is awake while initializing a newly inserted card. Once it is
called during suspending state and explicitly before rtsx_usb_suspend()
acquires the same dev_mutex, both routine deadlock and further hang the
driver because pm_runtime_get_sync() waits the pending PM operations.
Fix this by using an empty suspend method. mmc_core always turns the
LED off after a request is done and thus it is ok to remove the only
rtsx_usb_turn_off_led() here.
Cc: <stable@vger.kernel.org> # v3.16+
Fixes: 730876be25 ("mfd: Add realtek USB card reader driver")
Signed-off-by: Roger Tseng <rogerable@realtek.com>
[Lee: Removed newly unused variable]
Signed-off-by: Lee Jones <lee.jones@linaro.org>
If we don't tell regmap-irq that our first status
register is at offset 1, it will try to read offset
zero, which is the chipid register.
Fixes: 44b4dc6 mfd: tps65218: Add driver for the TPS65218 PMIC
Cc: <stable@vger.kernel.org> # v3.15+
Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
STATUS register can be modified by the HW, so we
should bypass cache because of that.
In the case of INT[12] registers, they are the ones
that actually clear the IRQ source at the time they
are read. If we rely on the cache for them, we will
never be able to clear the interrupt, which will cause
our IRQ line to be disabled due to IRQ throttling.
Fixes: 44b4dc6 mfd: tps65218: Add driver for the TPS65218 PMIC
Cc: <stable@vger.kernel.org> # v3.15+
Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Allow multiple DA9052 regulators be registered by registering with
PLATFORM_DEVID_AUTO instead of PLATFORM_DEVID_NONE.
The subdevices are currently registered with PLATFORM_DEVID_NONE, which
will cause a name collision on the platform bus when multiple regulators
are registered:
[ 0.128855] da9052-regulator da9052-regulator: invalid regulator ID specified
[ 0.128973] da9052-regulator: probe of da9052-regulator failed with error -22
[ 0.129148] ------------[ cut here ]------------
[ 0.129200] WARNING: CPU: 0 PID: 1 at fs/sysfs/dir.c:31 sysfs_warn_dup+0x5c/0x7c()
[ 0.129233] sysfs: cannot create duplicate filename '/devices/platform/soc/60000000.aips/63fc8000.i2c/i2c-0/0-0048/da9052-regulator
...
[ 0.132891] ------------[ cut here ]------------
[ 0.132924] WARNING: CPU: 0 PID: 1 at lib/kobject.c:240 kobject_add_internal+0x24c/0x2cc()
[ 0.132957] kobject_add_internal failed for da9052-regulator with -EEXIST, don't try to register things with the same name in the same directory.
...
[ 0.137000] da9052 0-0048: mfd_add_devices failed: -17
[ 0.138486] da9052: probe of 0-0048 failed with error -17
Based on the fix done by Johan Hovold at commit b668422872 ("mfd:
viperboard: Fix platform-device id collision").
Tested on a imx53-qsb board, where multiple DA9053 regulators can be
successfully probed.
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
As dts files have been reorganised under vendor subdirs, dtb files
cannot be removed with "make distclean" now. Thus, this patch moves
dtb files under archclean rule and removes unnecessary entries.
Cc: Robert Richter <rrichter@cavium.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Signed-off-by: Jungseok Lee <jungseoklee85@gmail.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
