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Superblock lock was replaced with (un)lock_super() removal, but left
uninitialized for Seventh Edition UNIX filesystem in the following commit (3.7):
c07cb01 sysv: drop lock/unlock super
Signed-off-by: Lubomir Rintel <lkundrak@v3.sk>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Pull USB fixes from Greg KH:
"Here are a number of USB driver fixes for 3.12-rc3.
These are all for host controller issues that have been reported, and
there's a fix for an annoying error message that gets printed every
time you remove a USB 3 device from the system that's been bugging me
for a while"
* tag 'usb-3.12-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
usb: dwc3: add support for Merrifield
USB: fsl/ehci: fix failure of checking PHY_CLK_VALID during reinitialization
USB: Fix breakage in ffs_fs_mount()
fsl/usb: Resolve PHY_CLK_VLD instability issue for ULPI phy
usb/core/devio.c: Don't reject control message to endpoint with wrong direction bit
usb: chipidea: USB_CHIPIDEA should depend on HAS_DMA
usb: chipidea: udc: free pending TD at removal procedure
usb: chipidea: imx: Add usb_phy_shutdown at probe's error path
usb: chipidea: Fix memleak for ci->hw_bank.regmap when removal
usb: chipidea: udc: fix the oops after rmmod gadget
USB: fix PM config symbol in uhci-hcd, ehci-hcd, and xhci-hcd
USB: OHCI: accept very late isochronous URBs
USB: UHCI: accept very late isochronous URBs
USB: iMX21: accept very late isochronous URBs
usbcore: check usb device's state before sending a Set SEL control transfer
xhci: Fix race between ep halt and URB cancellation
usb: Fix xHCI host issues on remote wakeup.
xhci: Ensure a command structure points to the correct trb on the command ring
xhci: Fix oops happening after address device timeout
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Pull tty/serial fixes from Greg KH:
"Here are some serial at tty driver fixes for 3.12-rc3
The serial driver fixes some kref leaks, documentation is moved to the
proper places, and the tty and n_tty fixes resolve some reported
regressions. There is still one outstanding tty regression fix that
isn't in here yet, as I want to test it out some more, it will be sent
for 3.12-rc4 if it checks out"
* tag 'tty-3.12-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
tty: ar933x_uart: move devicetree binding documentation
tty: Fix SIGTTOU not sent with tcflush()
n_tty: Fix EOF push index when termios changes
serial: pch_uart: remove unnecessary tty_port_tty_get
serial: pch_uart: fix tty-kref leak in dma-rx path
serial: pch_uart: fix tty-kref leak in rx-error path
serial: tegra: fix tty-kref leak
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging
Pull staging fixes from Greg KH:
"Here are some staging driver fixes, MAINTAINER updates, and a new
device id. All of these have been in the linux-next tree, and are
pretty simple patches"
* tag 'staging-3.12-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
staging: r8188eu: Add new device ID
staging: imx-drm: Fix probe failure
staging: vt6656: [BUG] iwctl_siwencodeext return if device not open
staging: vt6656: [BUG] main_usb.c oops on device_close move flag earlier.
staging: vt6656: rxtx.c [BUG] s_vGetFreeContext dead lock on null apTD.
Staging: rtl8192u: r819xU_cmdpkt: checking NULL value after doing dev_alloc_skb
staging: usbip: Orphan usbip
staging: r8188eu: Add files for new drive: Cocci spatch "noderef"
staging: r8188eu: Cocci spatch "noderef"
staging: octeon-usb: Cocci spatch "noderef"
staging: r8188eu: Add files for new drive: Cocci spatch "noderef"
MAINTAINERS: staging: dgnc and dgap drivers: add maintainer
staging: lustre: Cocci spatch "noderef"
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
Pull driver core / sysfs fixes from Greg KH:
"Here are 2 fixes for 3.12-rc3. One fixes a sysfs problem with
mounting caused by 3.12-rc1, and the other is a bug reported by the
chromeos developers with the driver core.
Both have been in linux-next for a bit"
* tag 'driver-core-3.12-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core:
driver core : Fix use after free of dev->parent in device_shutdown
sysfs: Allow mounting without CONFIG_NET
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull char/misc driver fixes from Greg KH:
"Here are some HyperV and MEI driver fixes for 3.12-rc3. They resolve
some issues that people have been reporting for them"
* tag 'char-misc-3.12-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
Drivers: hv: vmbus: Terminate vmbus version negotiation on timeout
Drivers: hv: util: Correctly support ws2008R2 and earlier
mei: cancel stall timers in mei_reset
mei: bus: stop wait for read during cl state transition
mei: make me client counters less error prone
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf revert from Ingo Molnar:
"This fixes the 'perf top' regression Markus Trippelsdorf reported"
* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
Revert "perf symbols: Demangle cloned functions"
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Pull drm fixes from Dave Airlie:
"Nothing too major, radeon still has some dpm changes for off by
default.
Radeon, intel, msm:
- radeon: a few more dpm fixes (still off by default), uvd fixes
- i915: runtime warn backtrace and regression fix
- msm: iommu changes fallout"
* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux: (27 commits)
drm/msm: use drm_gem_dumb_destroy helper
drm/msm: deal with mach/iommu.h removal
drm/msm: Remove iommu include from mdp4_kms.c
drm/msm: Odd PTR_ERR usage
drm/i915: Fix up usage of SHRINK_STOP
drm/radeon: fix hdmi audio on DCE3.0/3.1 asics
drm/i915: preserve pipe A quirk in i9xx_set_pipeconf
drm/i915/tv: clear adjusted_mode.flags
drm/i915/dp: increase i2c-over-aux retry interval on AUX DEFER
drm/radeon/cik: fix overflow in vram fetch
drm/radeon: add missing hdmi callbacks for rv6xx
drm/i915: Use a temporary va_list for two-pass string handling
drm/radeon/uvd: lower msg&fb buffer requirements on UVD3
drm/radeon: disable tests/benchmarks if accel is disabled
drm/radeon: don't set default clocks for SI when DPM is disabled
drm/radeon/dpm/ci: filter clocks based on voltage/clk dep tables
drm/radeon/dpm/si: filter clocks based on voltage/clk dep tables
drm/radeon/dpm/ni: filter clocks based on voltage/clk dep tables
drm/radeon/dpm/btc: filter clocks based on voltage/clk dep tables
drm/radeon/dpm: fetch the max clk from voltage dep tables helper
...
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This reverts commit de95ab53645a2f0015e0f68ee723f18dce2b8b51.
Markus Trippelsdorf reported that this commit broke 'perf top':
> I just see a gray screen with no text at all. Sometimes the
> following error messages are printed:
>
> *** Error in `perf': invalid fastbin entry (free): 0x00000000029b18c0
> ***
> *** Error in `perf': malloc(): memory corruption (fast): 0x0000000000ee0b10 ***
While this code is fixable, the commit itself fails on several levels:
- it should have been a separate helper function
- why the heck does it do strchr() twice
- it casts a const char * over into char *
- sloppy style
- it's not even a regression fix!
So lets revert it and re-try the patch in v3.13.
Reported-by: Markus Trippelsdorf <markus@trippelsdorf.de>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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git://people.freedesktop.org/~robclark/linux into drm-fixes
A small fix + deal with fallout of iommu changes + use new
drm_gem_dumb_destroy helper.
* 'msm-fixes-3.12-rc2' of git://people.freedesktop.org/~robclark/linux:
drm/msm: use drm_gem_dumb_destroy helper
drm/msm: deal with mach/iommu.h removal
drm/msm: Remove iommu include from mdp4_kms.c
drm/msm: Odd PTR_ERR usage
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'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler, timer and x86 fixes from Ingo Molnar:
- A context tracking ARM build and functional fix
- A handful of ARM clocksource/clockevent driver fixes
- An AMD microcode patch level sysfs reporting fixlet
* 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
arm: Fix build error with context tracking calls
* 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
clocksource: em_sti: Set cpu_possible_mask to fix SMP broadcast
clocksource: of: Respect device tree node status
clocksource: exynos_mct: Set IRQ affinity when the CPU goes online
arm: clocksource: mvebu: Use the main timer as clock source from DT
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/microcode/AMD: Fix patch level reporting for family 15h
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf fixes from Ingo Molnar:
"A couple of tooling fixlets and a PMU detection printout fix"
* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
perf/x86: Fix PMU detection printout when no PMU is detected
perf symbols: Demangle cloned functions
perf machine: Fix path unpopulated in machine__create_modules()
perf tools: Explicitly add libdl dependency
perf probe: Fix probing symbols with optimization suffix
perf trace: Add mmap2 handler
perf kmem: Make it work again on non NUMA machines
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Pull xfs bugfixes from Ben Myers:
- fix for directory node collapse regression
- fix for recovery over stale on disk structures
- fix for eofblocks ioctl
- fix asserts in xfs_inode_free
- lock the ail before removing an item from it
* tag 'xfs-for-linus-v3.12-rc3' of git://oss.sgi.com/xfs/xfs:
xfs: fix node forward in xfs_node_toosmall
xfs: log recovery lsn ordering needs uuid check
xfs: fix XFS_IOC_FREE_EOFBLOCKS definition
xfs: asserting lock not held during freeing not valid
xfs: lock the AIL before removing the buffer item
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git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux
Pull i2c fixes from Wolfram Sang:
"Some driver bugfixes for the I2C subsystem"
* 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
i2c: ismt: initialize DMA buffer
i2c: designware: 10-bit addressing mode enabling if I2C_DYNAMIC_TAR_UPDATE is set
i2c: mv64xxx: Do not use writel_relaxed()
i2c: mv64xxx: Fix some build warnings
i2c: s3c2410: fix clk_disable/clk_unprepare WARNings
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git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull ACPI and power management fixes from Rafael Wysocki:
"These fix one recent cpufreq regression, a few older bugs that may
harm users and a kerneldoc typo.
Specifics:
1) After the recent locking changes in the cpufreq core it is
possible to trigger BUG_ON(!policy) in lock_policy_rwsem_read() if
cpufreq_get() is called before registering a cpufreq driver. Fix
from Viresh Kumar.
2) If intel_pstate has been loaded already, it doesn't make sense to
do anything in acpi_cpufreq_init() and moreover doing something in
there in that case may be harmful, so make that function return
immediately if another cpufreq driver is already present. From
Yinghai Lu.
3) The ACPI IPMI driver sometimes attempts to acquire a mutex from
interrupt context, which can be avoided by replacing that mutex
with a spinlock. From Lv Zheng.
4) A NULL pointer may be dereferenced by the exynos5440 cpufreq
driver if a memory allocation made by it fails. Fix from Sachin
Kamat.
5) Hanjun Guo's commit fixes a typo in the kerneldoc comment
documenting acpi_bus_unregister_driver()"
* tag 'pm+acpi-3.12-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
ACPI / scan: fix typo in comments of acpi_bus_unregister_driver()
cpufreq: exynos5440: Fix potential NULL pointer dereference
cpufreq: check cpufreq driver is valid and cpufreq isn't disabled in cpufreq_get()
acpi-cpufreq: skip loading acpi_cpufreq after intel_pstate
ACPI / IPMI: Fix atomic context requirement of ipmi_msg_handler()
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Ben Herrenschmidt found that commit 928bea964827 ("PCI: Delay enabling
bridges until they're needed") breaks PCI in some powerpc environments.
The reason is that the PCIe port driver will call pci_enable_device() on
the bridge, so the device is enabled, but skips pci_set_master because
pcie_port_auto and no acpi on powerpc.
Because of that, pci_enable_bridge() later on (called as a result of the
child device driver doing pci_enable_device) will see the bridge as
already enabled and will not call pci_set_master() on it.
Fixed by add checking in pci_enable_bridge, and call pci_set_master
if driver skip that.
That will make the code more robot and wade off problem for missing
pci_set_master in drivers.
Reported-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull s390 lockref enablement from Heiko Carstens:
"Enabling the new lockless lockref variant on s390 would have been
trivial until Tony Luck added a cpu_relax() call into the
CMPXCHG_LOOP(), with commit d472d9d98b46 ("lockref: Relax in cmpxchg
loop")
As already mentioned cpu_relax() is very expensive on s390 since it
yields() the current virtual cpu. So we are talking of several
thousand cycles. Considering this enabling the lockless lockref
variant would contradict the intention of the new semantics. And also
some quick measurements show performance regressions of 50% and more.
Simply removing the cpu_relax() call again seems also not very
desireable since Waiman Long reported that for some workloads the call
improved performance by 5%."
* 'lockref' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
s390: enable ARCH_USE_CMPXCHG_LOCKREF
lockref: use arch_mutex_cpu_relax() in CMPXCHG_LOOP()
mutex: replace CONFIG_HAVE_ARCH_MUTEX_CPU_RELAX with simple ifdef
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Commit 6072ddc8520b ("kernel: replace strict_strto*() with kstrto*()")
broke the handling of signed integer types, fix it.
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Reported-by: Christian Kujau <lists@nerdbynature.de>
Tested-by: Christian Kujau <lists@nerdbynature.de>
Cc: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux
Pull DeviceTree fixes from Rob Herring:
"Clean-up to fix some warnings for !OF builds and spelling fixes in
docs:
- Clean-up openrisc prom.h
- Fix warnings caused by of_irq.h ifdefs
- Spelling fix for Synopsys"
* tag 'devicetree-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux:
dts: Fix misspelling of Synopsys
of: clean-up ifdefs in of_irq.h
openrisc: clean-up prom.h
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Pull ARM fixes from Russell King:
"Just a few relatively small ARM fixes found since the last merge
window, nothing too exciting"
* 'fixes' of git://git.linaro.org/people/rmk/linux-arm:
ARM: 7837/3: fix Thumb-2 bug in AES assembler code
ARM: only allow kernel mode neon with AEABI
ARM: 7839/1: entry: fix tracing of ARM-private syscalls
ARM: 7836/1: add __get_user_unaligned/__put_user_unaligned
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This patch adds code to initialize the DMA buffer to compensate for
possible hardware data corruption.
Signed-off-by: James Ralston <james.d.ralston@intel.com>
[wsa: changed to use 'sizeof']
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
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Signed-off-by: Rob Clark <robdclark@gmail.com>
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We still need an API exported by msm iommu driver (but not visible in
any public header anymore). For now, just declare the prototype
ourselves, but when msm iommu driver provides a better option, use that
instead.
Signed-off-by: Rob Clark <robdclark@gmail.com>
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Ran into this cryptic PMU bootup log recently:
[ 0.124047] Performance Events:
[ 0.125000] smpboot: ...
Turns out we print this if no PMU is detected. Fall back to
the right condition so that the following is printed:
[ 0.122381] Performance Events: no PMU driver, software events only.
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Link: http://lkml.kernel.org/n/tip-u2fwaUffakjp0qkpRfqljgsn@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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The include file has been removed and the file does not
need it anyway, so remove it. Fixes a compile error.
Signed-off-by: Joerg Roedel <joro@8bytes.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
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The variable priv->kms is not initialized yet.
Found by "scripts/coccinelle/tests/odd_ptr_err.cocci".
PTR_ERR should access the value just tested by IS_ERR.
Signed-off-by: Thomas Meyer <thomas@m3y3r.de>
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Enable ARCH_USE_CMPXCHG_LOCKREF since it shows performance improvements
with Linus' simple stat() test case of up to 50% on a 30 cpu system.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
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Make use of arch_mutex_cpu_relax() so architectures can override the
default cpu_relax() semantics.
This is especially useful for s390, where cpu_relax() means that we
yield() the current (virtual) cpu and therefore is very expensive,
and would contradict the whole purpose of the lockless cmpxchg loop.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
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Linus suggested to replace
#ifndef CONFIG_HAVE_ARCH_MUTEX_CPU_RELAX
#define arch_mutex_cpu_relax() cpu_relax()
#endif
with just a simple
#ifndef arch_mutex_cpu_relax
# define arch_mutex_cpu_relax() cpu_relax()
#endif
to get rid of CONFIG_HAVE_CPU_RELAX_SIMPLE. So architectures can
simply define arch_mutex_cpu_relax if they want an architecture
specific function instead of having to add a select statement in
their Kconfig in addition.
Suggested-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/frederic/linux-dynticks into sched/urgent
Pull context tracking ARM fix from Frederic Weisbecker.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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into drm-fixes
More radeon fixes for 3.12. Kind of all over the place: UVD, DPM,
tiling, etc.
* 'drm-fixes-3.12' of git://people.freedesktop.org/~agd5f/linux:
drm/radeon: fix hdmi audio on DCE3.0/3.1 asics
drm/radeon/cik: fix overflow in vram fetch
drm/radeon: add missing hdmi callbacks for rv6xx
drm/radeon/uvd: lower msg&fb buffer requirements on UVD3
drm/radeon: disable tests/benchmarks if accel is disabled
drm/radeon: don't set default clocks for SI when DPM is disabled
drm/radeon/dpm/ci: filter clocks based on voltage/clk dep tables
drm/radeon/dpm/si: filter clocks based on voltage/clk dep tables
drm/radeon/dpm/ni: filter clocks based on voltage/clk dep tables
drm/radeon/dpm/btc: filter clocks based on voltage/clk dep tables
drm/radeon/dpm: fetch the max clk from voltage dep tables helper
drm/radeon: fix missed variable sized access
drm/radeon: Make r100_cp_ring_info() and radeon_ring_gfx() safe (v2)
drm/radeon/cik: Add tiling mode index for 1D tiled depth/stencil surfaces
drm/radeon/cik: Fix encoding of number of banks in tiling configuration info
drm/radeon/cik: Fix printing of client name on VM protection fault
drm/radeon: additional gcc fixes for radeon_atombios.c
drm/radeon: avoid UVD corruption on AGP cards using GPU gart
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git://people.freedesktop.org/~danvet/drm-intel into drm-fixes
Just a few fixes for regressions and other serious stuff.
Two fix state tracking mismatches, together with an additional patch that
I've submitted to stable (somehow forgotten to tag it) we should have them
fixed now (I hope).
* tag 'drm-intel-fixes-2013-09-26' of git://people.freedesktop.org/~danvet/drm-intel:
drm/i915: Fix up usage of SHRINK_STOP
drm/i915: preserve pipe A quirk in i9xx_set_pipeconf
drm/i915/tv: clear adjusted_mode.flags
drm/i915/dp: increase i2c-over-aux retry interval on AUX DEFER
drm/i915: Use a temporary va_list for two-pass string handling
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git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging
Pull hwmon fix from Guenter Roeck:
"Fix potential crash condition in applesmc driver"
* tag 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging:
hwmon: (applesmc) Check key count before proceeding
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git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound fixes from Takashi Iwai:
"Nothing too serious here: a couple of compress-offload core fixes,
Haswell HDMI audio fix, a fixup for new MacBook Airs and a few COEF
setups for ALC283 mic problems"
* tag 'sound-3.12' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
ALSA: hda - Enable internal mic on a Thinkpad machine with ALC283
ALSA: hda - Fix Internal Mic boost can't control with ALC283
ALSA: hda - Add documentation for CS4208 fixups
ALSA: hda - Add fixup for MacBook Air 6,1 and 6,2 with CS4208 codec
ALSA : hda - not use assigned converters for all unused pins
ALSA: compress: Make sure we trigger STOP before closing the stream.
ALSA: compress: Fix compress device unregister.
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git://git.kernel.org/pub/scm/linux/kernel/git/tomba/linux
Pull fbdev fixes from Tomi Valkeinen:
"Small fbdev fixes for various fb drivers"
* tag 'fbdev-fixes-3.12' of git://git.kernel.org/pub/scm/linux/kernel/git/tomba/linux:
video: mxsfb: Add missing break
video: of: display_timing: correct display-timings node finding
neofb: fix error return code in neofb_probe()
s3fb: fix error return code in s3_pci_probe()
video: mmp: drop needless devm cleanup
OMAPDSS: Add missing dependency on backlight for DSI-CM panel drier
OMAPDSS: DISPC: set irq_safe for runtime PM
OMAPDSS: Return right error during connector probe
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git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs
Pull reiserfs and UDF fixes from Jan Kara:
"The contains fix of an UDF oops when mounting corrupted media and a
fix of a race in reiserfs leading to oops"
* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs:
reiserfs: fix race with flush_used_journal_lists and flush_journal_list
reiserfs: remove useless flush_old_journal_lists
udf: Fortify LVID loading
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In kobj_ns_current_may_mount the default should be to allow the mount.
The test is only for a single kobj_ns_type at a time, and unless there
is a reason to prevent it the mounting sysfs should be allowed.
Subsystems that are not registered can't have are not involved so can't
have a reason to prevent mounting sysfs.
This is a bug-fix to commit 7dc5dbc879bd ("sysfs: Restrict mounting
sysfs") that came in via the userns tree during the 3.12 merge window.
Reported-and-tested-by: James Hogan <james.hogan@imgtec.com>
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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The 64-bit cmpxchg operation on the lockref is ordered by virtue of
hazarding between the cmpxchg operation and the reference count
manipulation. On weakly ordered memory architectures (such as ARM), it
can be of great benefit to omit the barrier instructions where they are
not needed.
This patch moves the lockless lockref code over to a cmpxchg64_relaxed
operation, which doesn't provide barrier semantics. If the operation
isn't defined, we simply #define it as the usual 64-bit cmpxchg macro.
Cc: Waiman Long <Waiman.Long@hp.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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is set
According to Designware I2C spec, if I2C_DYNAMIC_TAR_UPDATE is set to 1,
the 10-bit addressing mode is controlled by IC_10BITADDR_MASTER bit of
IC_TAR register instead of IC_CON register. The IC_10BITADDR_MASTER
in IC_CON register becomes read-only copy. Since I2C_DYNAMIC_TAR_UPDATE
value can't be detected from hardware register, so we will always set the
IC_10BITADDR_MASTER bit in both IC_CON and IC_TAR register whenever 10-bit
addresing mode is requested by user application.
Signed-off-by: Chew, Chiau Ee <chiau.ee.chew@intel.com>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
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The driver is used on PowerPC which don't provide writel_relaxed(). This
breaks the c2k and prpmc2800 default configurations. To fix the build,
turn the calls to writel_relaxed() into writel(). The impacts for ARM
should be minimal.
Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
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Some functions and variables are only used if the configuration selects
HAVE_CLK. Protect them with a corresponding #ifdef CONFIG_HAVE_CLK block
to avoid compiler warnings.
Signed-off-by: Thierry Reding <treding@nvidia.com>
[wsa: added marker to #endif]
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
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commit d16933b33914a6dff38a4ecbe8edce44a17898e8 "i2c: s3c2410: Move
location of clk_prepare_enable() call in probe function" refactored
clk_enable and clk_disable calls yet neglected to remove the
clk_disable_unprepare call in the module's remove().
It helps remove warnings on an arndale during unbind:
echo 12c90000.i2c > /sys/bus/platform/devices/12c90000.i2c/driver/unbind
------------[ cut here ]------------
WARNING: CPU: 0 PID: 2548 at drivers/clk/clk.c:842 clk_disable+0x18/0x24()
Modules linked in:
CPU: 0 PID: 2548 Comm: bash Not tainted 3.11.0-next-20130916-00003-gf4bddbc #6
[<c0014d48>] (unwind_backtrace+0x0/0xf8) from [<c00117d0>] (show_stack+0x10/0x14)
[<c00117d0>] (show_stack+0x10/0x14) from [<c0361be8>] (dump_stack+0x6c/0xac)
[<c0361be8>] (dump_stack+0x6c/0xac) from [<c001d864>] (warn_slowpath_common+0x64/0x88)
[<c001d864>] (warn_slowpath_common+0x64/0x88) from [<c001d8a4>] (warn_slowpath_null+0x1c/0x24)
[<c001d8a4>] (warn_slowpath_null+0x1c/0x24) from [<c02c4a64>] (clk_disable+0x18/0x24)
[<c02c4a64>] (clk_disable+0x18/0x24) from [<c028d0b0>] (s3c24xx_i2c_remove+0x28/0x70)
[<c028d0b0>] (s3c24xx_i2c_remove+0x28/0x70) from [<c0217a10>] (platform_drv_remove+0x18/0x1c)
[<c0217a10>] (platform_drv_remove+0x18/0x1c) from [<c0216358>] (__device_release_driver+0x58/0xb4)
[<c0216358>] (__device_release_driver+0x58/0xb4) from [<c02163d0>] (device_release_driver+0x1c/0x28)
[<c02163d0>] (device_release_driver+0x1c/0x28) from [<c02153c0>] (unbind_store+0x58/0x90)
[<c02153c0>] (unbind_store+0x58/0x90) from [<c0214c90>] (drv_attr_store+0x20/0x2c)
[<c0214c90>] (drv_attr_store+0x20/0x2c) from [<c01032c0>] (sysfs_write_file+0x168/0x198)
[<c01032c0>] (sysfs_write_file+0x168/0x198) from [<c00ae1c0>] (vfs_write+0xb0/0x194)
[<c00ae1c0>] (vfs_write+0xb0/0x194) from [<c00ae594>] (SyS_write+0x3c/0x70)
[<c00ae594>] (SyS_write+0x3c/0x70) from [<c000e3e0>] (ret_fast_syscall+0x0/0x30)
---[ end trace 4c9f9403066f57a6 ]---
------------[ cut here ]------------
WARNING: CPU: 0 PID: 2548 at drivers/clk/clk.c:751 clk_unprepare+0x14/0x1c()
Modules linked in:
CPU: 0 PID: 2548 Comm: bash Tainted: G W 3.11.0-next-20130916-00003-gf4bddbc #6
[<c0014d48>] (unwind_backtrace+0x0/0xf8) from [<c00117d0>] (show_stack+0x10/0x14)
[<c00117d0>] (show_stack+0x10/0x14) from [<c0361be8>] (dump_stack+0x6c/0xac)
[<c0361be8>] (dump_stack+0x6c/0xac) from [<c001d864>] (warn_slowpath_common+0x64/0x88)
[<c001d864>] (warn_slowpath_common+0x64/0x88) from [<c001d8a4>] (warn_slowpath_null+0x1c/0x24)
[<c001d8a4>] (warn_slowpath_null+0x1c/0x24) from [<c02c5834>] (clk_unprepare+0x14/0x1c)
[<c02c5834>] (clk_unprepare+0x14/0x1c) from [<c028d0b8>] (s3c24xx_i2c_remove+0x30/0x70)
[<c028d0b8>] (s3c24xx_i2c_remove+0x30/0x70) from [<c0217a10>] (platform_drv_remove+0x18/0x1c)
[<c0217a10>] (platform_drv_remove+0x18/0x1c) from [<c0216358>] (__device_release_driver+0x58/0xb4)
[<c0216358>] (__device_release_driver+0x58/0xb4) from [<c02163d0>] (device_release_driver+0x1c/0x28)
[<c02163d0>] (device_release_driver+0x1c/0x28) from [<c02153c0>] (unbind_store+0x58/0x90)
[<c02153c0>] (unbind_store+0x58/0x90) from [<c0214c90>] (drv_attr_store+0x20/0x2c)
[<c0214c90>] (drv_attr_store+0x20/0x2c) from [<c01032c0>] (sysfs_write_file+0x168/0x198)
[<c01032c0>] (sysfs_write_file+0x168/0x198) from [<c00ae1c0>] (vfs_write+0xb0/0x194)
[<c00ae1c0>] (vfs_write+0xb0/0x194) from [<c00ae594>] (SyS_write+0x3c/0x70)
[<c00ae594>] (SyS_write+0x3c/0x70) from [<c000e3e0>] (ret_fast_syscall+0x0/0x30)
---[ end trace 4c9f9403066f57a7 ]---
Signed-off-by: Kim Phillips <kim.phillips@linaro.org>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
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ad65782fba50 (context_tracking: Optimize main APIs off case
with static key) converted context tracking main APIs to inline
function and left ARM asm callers behind.
This can be easily fixed by making ARM calling the post static
keys context tracking function. We just need to replicate the
static key checks there. We'll remove these later when ARM will
support the context tracking static keys.
Reported-by: Guenter Roeck <linux@roeck-us.net>
Reported-by: Russell King <linux@arm.linux.org.uk>
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Tested-by: Kevin Hilman <khilman@linaro.org>
Cc: Nicolas Pitre <nicolas.pitre@linaro.org>
Cc: Anil Kumar <anilk4.v@gmail.com>
Cc: Tony Lindgren <tony@atomide.com>
Cc: Benoit Cousson <b-cousson@ti.com>
Cc: Guenter Roeck <linux@roeck-us.net>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Kevin Hilman <khilman@linaro.org>
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More thorough testing showed that these verbs were necessary to
improve quality of the internal mic. Patch originally from Realtek.
BugLink: https://bugs.launchpad.net/bugs/1231931
Signed-off-by: David Henningsson <david.henningsson@canonical.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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ALC283 pin control for Line1 default control by hidden register.
Use line1 as internal Mic will not get sound when boost value up.
Set control by verb for hidden register will solve this issue.
Signed-off-by: Kailang Yang <kailang@realtek.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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Signed-off-by: Takashi Iwai <tiwai@suse.de>
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This patch adds the default pin configuration and some init verbs for
setting COEFs, in addition to the correction of input pin AMP caps
for MacBook Air 6,1 and 6,2. With these changes, the headphone jack
detection starts working properly.
[trivial space fixes by tiwai]
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=60811
Signed-off-by: Ben Whitten <benwhitten@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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On AMD family 14h, applying microcode patch on the a core (core0)
would also affect the other core (core1) in the same compute
unit. The driver would skip applying the patch on core1, but it
still need to update kernel structures to reflect the proper
patch level.
The current logic is not updating the struct
ucode_cpu_info.cpu_sig.rev of the skipped core. This causes the
/sys/devices/system/cpu/cpu1/microcode/version to report
incorrect patch level as shown below:
$ grep . cpu?/microcode/version
cpu0/microcode/version:0x600063d
cpu1/microcode/version:0x6000626
cpu2/microcode/version:0x600063d
cpu3/microcode/version:0x6000626
cpu4/microcode/version:0x600063d
Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
Acked-by: Borislav Petkov <bp@suse.de>
Cc: <bp@alien8.de>
Cc: <jacob.w.shin@gmail.com>
Cc: <herrmann.der.user@googlemail.com>
Link: http://lkml.kernel.org/r/1285806432-1995-1-git-send-email-suravee.suthikulpanit@amd.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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* pm-cpufreq-fixes:
cpufreq: exynos5440: Fix potential NULL pointer dereference
cpufreq: check cpufreq driver is valid and cpufreq isn't disabled in cpufreq_get()
acpi-cpufreq: skip loading acpi_cpufreq after intel_pstate
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