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By popular DRM demand, introduce mutex_trylock_recursive() to fix up the
two GEM users.
Without this it is very easy for these drivers to get stuck in
low-memory situations and trigger OOM. Work is in progress to remove the
need for this in at least i915.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: David Airlie <airlied@linux.ie>
Cc: Davidlohr Bueso <dave@stgolabs.net>
Cc: Ding Tianhong <dingtianhong@huawei.com>
Cc: Imre Deak <imre.deak@intel.com>
Cc: Jason Low <jason.low2@hpe.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Paul E. McKenney <paulmck@us.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Rob Clark <robdclark@gmail.com>
Cc: Terry Rudd <terry.rudd@hpe.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Tim Chen <tim.c.chen@linux.intel.com>
Cc: Will Deacon <Will.Deacon@arm.com>
Cc: dri-devel@lists.freedesktop.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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The 'class' parameter is not used, remove it.
n
Signed-off-by: Tahsin Erdogan <tahsin@google.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/1478592127-4376-1-git-send-email-tahsin@google.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Signed-off-by: Ingo Molnar <mingo@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound fixes from Takashi Iwai:
"This became a largish pull-request, as we've got a bunch of pending
ASoC fixes at this time. One noticeable change is the removal of error
directive in uapi/sound/asoc.h. We found that the API has been already
used on Chromebooks, so we need to support it even now.
A slight big LOC is found in Qualcomm lpass driver, but the rest are
all small and easy fixes for ASoC drivers (sti, sun4i, Realtek codecs,
Intel, tas571x, etc) in addition to the patches to harden the ALSA
core proc file accesses"
* tag 'sound-4.9-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (26 commits)
ALSA: info: Return error for invalid read/write
ALSA: info: Limit the proc text input size
ASoC: samsung: spdif: Fix DMA filter initialization
ASoC: sun4i-codec: Enable bus clock after getting GPIO
ASoC: lpass-cpu: add module licence and description
ASoC: lpass-platform: Fix broken pcm data usage
ASoC: sun4i-codec: return error code instead of NULL when create_card fails
ASoC: hdmi-codec: Fix hdmi_of_xlate_dai_name when #sound-dai-cells = <0>
ASoC: samsung: get access to DMA engine early to defer probe properly
ASoC: da7219: Connect output enable register to DAIOUT
ASoC: Intel: Skylake: Fix to turn off hdmi power on probe failure
ASoC: sti-sas: enable fast io for regmap
ASoC: sti: fix channel status update after playback start
ASoC: PXA: Brownstone needs I2C
ASoC: Intel: Skylake: Always acquire runtime pm ref on unload
ASoC: Intel: Atom: add terminate entry for dmi_system_id tables
ASoC: rt298: fix jack type detect error
ASoC: rt5663: fix a debug statement
ASoC: cs4270: fix DAPM stream name mismatch
ASoC: Intel: haswell depends on sst-firmware
...
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Currently the ALSA proc handler allows read or write even if the proc
file were write-only or read-only. It's mostly harmless, does thing
but allocating memory and ignores the input/output. But it doesn't
tell user about the invalid use, and it's confusing and inconsistent
in comparison with other proc files.
This patch adds some sanity checks and let the proc handler returning
an -EIO error when the invalid read/write is performed.
Cc: <stable@vger.kernel.org> # v4.2+
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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The ALSA proc handler allows currently the write in the unlimited size
until kmalloc() fails. But basically the write is supposed to be only
for small inputs, mostly for one line inputs, and we don't have to
handle too large sizes at all. Since the kmalloc error results in the
kernel warning, it's better to limit the size beforehand.
This patch adds the limit of 16kB, which must be large enough for the
currently existing code.
Cc: stable@vger.kernel.org # v4.2+
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus
ASoC: Fixes for v4.9
The most important fix in here is a change which removes the #error
making the topology API unusable as-is since we have recently discovered
some production uses on Chromebooks so need to acknowledge that what
we've got there now is an ABI.
There's also a very big batch of driver specific fixes here which have
kept on being delayed due to more arriving so the update is another of
these bigger than I would like ones. There is one especially big one in
there, for the Qualcomm code which fixes simultaneous playback and
capture which was broken during the merge window. The diff for that is
large because it moves blocks of code to different functions but it's
functionally fairly simple and if it breaks it should have been very
obvious in testing.
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We had inserted a #error into the topology UAPI code to ensure that the
ABI was not adopted by userspace while final review and testing was
ongoing. The idea was that some finishing touches would be made to the
ABI before declaring it stable and suitable for use in production but
this has not yet happened as more than a year later revisions to the ABI
are still onging.
The reality however is that people are shipping topology files in
production and these ABI changes are causing practical issues for users
and we can't break userspace. This makes this error pointless so we
should remove it.
Signed-off-by: Mark Brown <broonie@kernel.org>
Acked-by: Vinod Koul <vinod.koul@intel.com>
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'asoc/fix/sti', 'asoc/fix/sti-codec', 'asoc/fix/sunxi' and 'asoc/fix/tas571x' into asoc-linus
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The set_bias_level toggles the PDN signal when entering
SND_SOC_BIAS_STANDBY and SND_SOC_BIAS_OFF. However this has no effect and
actually breaks things down (tested with TAS5717) due to the following
reasons:
1) holding down PDN does not save power but holding down RST does
2) now hard mute via register 0x5 is implemented and therefore it is no
longer needed to toggle PDN to enter all channel shut down
3) in order to leave PDN it is required to toggle the RST signal (see
TAS5721 datasheet), which was not implemented
4) toggling PDN as implemented actually mutes PWMs and there is no audio
output (tested on TAS5717)
For these reasons remove the PDN signal toggling and just initialize it to
inactive in probe().
Signed-off-by: Petr Kulhavy <brain@jikos.cz>
Signed-off-by: Mark Brown <broonie@kernel.org>
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TAS5721 datasheet recommends to wait at least 13.5ms after deasserting the
RESET signal. For TAS5717 this time is only 12ms, which was the original
value in the code.
Extend the wait time after deasserting RESET from 12 to 13.5ms to comply
with the TAS5721 specification.
Signed-off-by: Petr Kulhavy <brain@jikos.cz>
Signed-off-by: Mark Brown <broonie@kernel.org>
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Channel 1 and 2 Mixer Volume controls (registers 0x72/0x73 and 0x76/0x77)
were wrongly assigned to tas5711_controls in commit f252d2346022
("ASoC: tas571x: add input channel mixer for TAS5717/19")
Therefore move them to tas5717_controls.
Signed-off-by: Petr Kulhavy <brain@jikos.cz>
Signed-off-by: Mark Brown <broonie@kernel.org>
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Wait extra 50ms after writing the oscillator trim register in probe(), as
recommended by the TAS5721 and TAS5711 datasheets.
Signed-off-by: Petr Kulhavy <brain@jikos.cz>
Signed-off-by: Mark Brown <broonie@kernel.org>
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In the current probe function the GPIO is acquired after the codec's
bus clock is enabled. However if it fails to acquire the GPIO due to
a deferred probe, it does not disable the bus clock before bailing out.
This would result in the clock being enabled multiple times.
Move the code that enables the bus clock after the part that gets the
GPIO, maintaining a separation between resource acquisition and device
enablement in the probe function.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
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When sun4i_codec_create_card fails, we do not assign a proper error
code to the return value. The return value would be 0 from the previous
function call, or we would have bailed out sooner. This would confuse
the driver core into thinking the device probe succeeded, when in fact
it didn't, leaving various devres based resources lingering.
Make the create_card function pass back a meaningful error code, and
assign it to the return value.
Fixes: 45fb6b6f2aa3 ("ASoC: sunxi: add support for the on-chip codec on
early Allwinner SoCs")
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
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Some registers accesses are done in atomic context.
Enable fast io to use spinlock instead of mutex to protect access.
Signed-off-by: Arnaud Pouliquen <arnaud.pouliquen@st.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
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If 'IEC958 Playback Default' control is updated during playback,
Channel status needs to be set according to the runtime structure.
Signed-off-by: Arnaud Pouliquen <arnaud.pouliquen@st.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
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This patch fixes issues introduced in commit 73f5dfc68316bef2ab7062ec
"ASoC: samsung: get access to DMA engine early to defer probe properly"
and indicated by a following compilation warning:
CC [M] sound/soc/samsung/spdif.o
sound/soc/samsung/spdif.c: In function ‘spdif_probe’:
sound/soc/samsung/spdif.c:419:6: warning: ‘filter’ may be used uninitialized
in this function [-Wuninitialized]
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
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ASoC Samsung sub-drivers tried to get access to their DMA engine
controllers as a last step in driver probe. If a DMA engine was not
available yet, samsung_asoc_dma_platform_register() function ended in
-EPROBE_DEFER, but the driver already registered its component to ASoC
core. This patch moves samsung_asoc_dma_platform_register() call before
registering any components, to the common place, where driver was gathering
all needed resources.
In case of Samsung Exynos i2s driver the issue was even worse. The driver
managed already to register its secondary DAI platform device before
even getting the DMA engine access. That together with -EPROBE_DEFER error
code from samsung_i2s_probe() immediately triggered another round of
deferred probe retry and in turn endless loop of driver probing.
This patch fixes broken boot on Odroid XU3 and other Exynos5422-based
boards.
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Reviewed-by: Javier Martinez Canillas <javier@osg.samsung.com>
Reviewed-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
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We increment "i" before printing the debug statement. That makes it
the wrong sleep_time[] information and Smatch complains that the last
increment could be beyond the end of the array.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Bard Liao <bardliao@realtek.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
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'asoc/fix/hdmi-codec', 'asoc/fix/pxa', 'asoc/fix/qcom' and 'asoc/fix/rt298' into asoc-linus
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rt298_jack_detect may be called before card is instantiated. And
snd_soc_dapm_force_enable_pin will not work in that case. So, update
bit manually by regmap_update_bits.
Signed-off-by: Bard Liao <bardliao@realtek.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
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This patch adds module licence to lpass-cpu driver, without this
patch lpass-cpu module would taint with below error:
snd_soc_lpass_cpu: module license 'unspecified' taints kernel.
Disabling lock debugging due to kernel taint
snd_soc_lpass_cpu: Unknown symbol regmap_write (err 0)
snd_soc_lpass_cpu: Unknown symbol devm_kmalloc (err 0)
...
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Acked-by: Kenneth Westfield <kwestfie@codeaurora.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
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This patch fixes lpass-platform driver which was broken in v4.9-rc1.
lpass_pcm_data data structure holds information specific to stream.
Holding a single private pointer to it in global lpass_data
will not work, because it would be overwritten by for each pcm instance.
This code was breaking playback when we have both playback and capture
pcm streams, as playback settings are over written by capture settings.
Fix this by moving channel allocation logic out of pcm_new to pcm_open
so that we can store the stream specific information in private_data of
snd_pcm_runtime.
Fixes: 6adcbdcd4b6e ("ASoC: lpass-platform: don't use snd_soc_pcm_set_drvdata()")
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
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I rand into a new build error with SND_MMP_SOC_BROWNSTONE:
warning: (SND_MMP_SOC_BROWNSTONE && SND_SOC_SAMSUNG_SMDK_WM8994 && SND_SOC_SMDK_WM8994_PCM && SND_SOC_LITTLEMILL) selects MFD_WM8994 which has unmet direct dependencies (HAS_IOMEM && I2C)
drivers/mfd/wm8994-core.c:688:1: error: data definition has no type or storage class [-Werror]
drivers/mfd/wm8994-core.c:688:1: error: type defaults to 'int' in declaration of 'module_i2c_driver' [-Werror=implicit-int]
I don't see why this never showed up before, as the dependency seems to
have been missing since the symbol was first introduced several years
ago. This adds a dependency like the other drivers have.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Mark Brown <broonie@kernel.org>
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If a DAI specifies "#sound-dai-cells = <0>" in device-tree then
hdmi_of_xlate_dai_name() will be called with zero args, which it isn't
implemented to cope with. The resulting use of an uninitialised variable
for the id will usually result in an error like:
asoc-simple-card sound: parse error -11
asoc-simple-card: probe of sound failed with error -11
Fix this by using and id of zero if no arg is provided.
Fixes: 9731f82d6016 ("ASoC: hdmi-codec: enable multi probe for same device")
Signed-off-by: Jon Medhurst <tixy@linaro.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
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da7219 output (for headset capture) should be set to high-impedance when
not in use, since it will otherwise interfere with output from other
codecs attached to the same DAI.
Signed-off-by: Stephen Barber <smbarber@chromium.org>
Acked-by: Adam Thomson <Adam.Thomson.Opensource@diasemi.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
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Mismatching stream names in DAPM route and widget definitions are
causing compilation errors. Fixing these names allows the cs4270
driver to compile and function.
[Errors must be at probe time not compile time -- broonie]
Signed-off-by: Murray Foster <mrafoster@gmail.com>
Acked-by: Paul Handrigan <Paul.Handrigan@cirrus.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Cc: stable@vger.kernel.org
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HDMI codec is required to be powered up before controller initialization
for successful enumeration of codec. If the probe fails it needs to be
powered off to balance the power state of HDMI codec.
This fix balances the reference count in the error path before turning
off the codec.
Reported-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Sodhi, VunnyX <vunnyx.sodhi@intel.com>
Signed-off-by: Subhransu S. Prusty <subhransu.s.prusty@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
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skl_probe() releases a runtime pm ref unconditionally wheras
skl_remove() acquires one only if the device is wakeup capable.
Thus if the device is not wakeup capable, unloading and reloading
the module will result in the refcount being decreased below 0.
Fix it.
Fixes: d8c2dab8381d ("ASoC: Intel: Add Skylake HDA audio driver")
Signed-off-by: Lukas Wunner <lukas@wunner.de>
Signed-off-by: Mark Brown <broonie@kernel.org>
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Make sure dmi_system_id tables are NULL terminated.
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
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The Intel Haswell audio support fails to link if
CONFIG_SND_SOC_INTEL_SST_FIRMWARE is disabled:
sst-haswell-dsp.c: undefined reference to `sst_mem_block_register'
sst-haswell-dsp.c: undefined reference to `sst_mem_block_unregister_all'
sst-haswell-dsp.c: undefined reference to `sst_module_alloc_blocks'
sst-haswell-dsp.c: undefined reference to `sst_module_free'
sst-haswell-dsp.c: undefined reference to `sst_module_new'
sst-haswell-pcm.c: undefined reference to `sst_module_get_from_id'
sst-haswell-pcm.c: undefined reference to `sst_module_runtime_restore'
sst-haswell-pcm.c: undefined reference to `sst_module_runtime_save'
ERROR: "sst_block_alloc_scratch" [sound/soc/intel/haswell/snd-soc-sst-haswell-pcm.ko] undefined!
ERROR: "sst_block_free_scratch" [sound/soc/intel/haswell/snd-soc-sst-haswell-pcm.ko] undefined!
ERROR: "sst_dsp_dma_copyfrom" [sound/soc/intel/haswell/snd-soc-sst-haswell-pcm.ko] undefined!
ERROR: "sst_dsp_dma_copyto" [sound/soc/intel/haswell/snd-soc-sst-haswell-pcm.ko] undefined!
ERROR: "sst_dsp_dma_get_channel" [sound/soc/intel/haswell/snd-soc-sst-haswell-pcm.ko] undefined!
ERROR: "sst_dsp_dma_put_channel" [sound/soc/intel/haswell/snd-soc-sst-haswell-pcm.ko] undefined!
ERROR: "sst_dsp_free" [sound/soc/intel/haswell/snd-soc-sst-haswell-pcm.ko] undefined!
ERROR: "sst_dsp_get_offset" [sound/soc/intel/haswell/snd-soc-sst-haswell-pcm.ko] undefined!
ERROR: "sst_dsp_new" [sound/soc/intel/haswell/snd-soc-sst-haswell-pcm.ko] undefined!
ERROR: "sst_fw_free_all" [sound/soc/intel/haswell/snd-soc-sst-haswell-pcm.ko] undefined!
ERROR: "sst_fw_new" [sound/soc/intel/haswell/snd-soc-sst-haswell-pcm.ko] undefined!
ERROR: "sst_fw_reload" [sound/soc/intel/haswell/snd-soc-sst-haswell-pcm.ko] undefined!
ERROR: "sst_fw_unload" [sound/soc/intel/haswell/snd-soc-sst-haswell-pcm.ko] undefined!
ERROR: "sst_module_runtime_alloc_blocks" [sound/soc/intel/haswell/snd-soc-sst-haswell-pcm.ko] undefined!
ERROR: "sst_module_runtime_get_from_id" [sound/soc/intel/haswell/snd-soc-sst-haswell-pcm.ko] undefined!
ERROR: "sst_module_runtime_new" [sound/soc/intel/haswell/snd-soc-sst-haswell-pcm.ko] undefined!
This moves the 'select' statement from two of the three haswell based users
into the line that is used by all of them, so make it harder to get wrong
and to fix the existing randconfig regressions.
Fixes: 2d995e5dc283 ("ASoC: Intel: boards: Add bdw-rt5677 machine driver")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Mark Brown <broonie@kernel.org>
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This patch updates Jack type bitmask to include SND_JACK_LINEOUT while
creating a new jack, so that LINEOUT events are reported properly.
Signed-off-by: Sathyanarayana Nujella <sathyanarayana.nujella@intel.com>
Acked-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/hubcap/linux
Pull orangefs fix from Mike Marshall:
"We recently refactored the Orangefs debugfs code. The refactor seemed
to trigger dan.carpenter@oracle.com's static tester to find a possible
double-free in the code.
While designing the fix we saw a condition under which the buffer
being freed could also be overflowed.
We also realized how to rebuild the related debugfs file's "contents"
(a string) without deleting and re-creating the file.
This fix should eliminate the possible double-free, the potential
overflow and improve code readability"
* tag 'for-linus-4.9-rc4-ofs-1' of git://git.kernel.org/pub/scm/linux/kernel/git/hubcap/linux:
orangefs: clean up debugfs
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We recently refactored the Orangefs debugfs code.
The refactor seemed to trigger dan.carpenter@oracle.com's
static tester to find a possible double-free in the code.
While designing the fix we saw a condition under which the
buffer being freed could also be overflowed.
We also realized how to rebuild the related debugfs file's
"contents" (a string) without deleting and re-creating the file.
This fix should eliminate the possible double-free, the
potential overflow and improve code readability.
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
Signed-off-by: Martin Brandenburg <martin@omnibond.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull s390 fixes from Martin Schwidefsky:
"Two bug fixes
- a memory alignment fix in the s390 only hypfs code
- a fix for the generic percpu code that caused ftrace to break on
s390. This is not relevant for x86 but for all architectures that
use the generic percpu code"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
percpu: use notrace variant of preempt_disable/preempt_enable
s390/hypfs: Use get_free_page() instead of kmalloc to ensure page alignment
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Commit 345ddcc882d8 ("ftrace: Have set_ftrace_pid use the bitmap like
events do") added a couple of this_cpu_read calls to the ftrace code.
On x86 this is not a problem, since it has single instructions to read
percpu data. Other architectures which use the generic variant now
have additional preempt_disable and preempt_enable calls in the core
ftrace code. This may lead to recursive calls and in result to a dead
machine, e.g. if preemption and debugging options are enabled.
To fix this use the notrace variant of preempt_disable and
preempt_enable within the generic percpu code.
Reported-and-bisected-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Tested-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Fixes: 345ddcc882d8 ("ftrace: Have set_ftrace_pid use the bitmap like events do")
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Acked-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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Since commit d86bd1bece6f ("mm/slub: support left redzone") it is no longer
guaranteed that kmalloc(PAGE_SIZE) returns page aligned memory.
After the above commit we get an error for diag224 because aligned
memory is required. This leads to the following user visible error:
# mount none -t s390_hypfs /sys/hypervisor/
mount: unknown filesystem type 's390_hypfs'
# dmesg | grep hypfs
hypfs.cccfb8: The hardware system does not provide all functions
required by hypfs
hypfs.7a79f0: Initialization of hypfs failed with rc=-61
Fix this problem and use get_free_page() instead of kmalloc() to get
correctly aligned memory.
Cc: stable@vger.kernel.org # v3.6+
Signed-off-by: Michael Holzheu <holzheu@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu
Pull IOMMU fixes from Joerg Roedel:
- Four patches from Robin Murphy fix several issues with the recently
merged generic DT-bindings support for arm-smmu drivers
- A fix for a dead-lock issue in the VT-d driver, which shows up on
iommu hotplug
* tag 'iommu-fixes-v4.9-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu:
iommu/vt-d: Fix dead-locks in disable_dmar_iommu() path
iommu/arm-smmu: Fix out-of-bounds dereference
iommu/arm-smmu: Check that iommu_fwspecs are ours
iommu/arm-smmu: Don't inadvertently reject multiple SMMUv3s
iommu/arm-smmu: Work around ARM DMA configuration
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It turns out that the disable_dmar_iommu() code-path tried
to get the device_domain_lock recursivly, which will
dead-lock when this code runs on dmar removal. Fix both
code-paths that could lead to the dead-lock.
Fixes: 55d940430ab9 ('iommu/vt-d: Get rid of domain->iommu_lock')
Signed-off-by: Joerg Roedel <jroedel@suse.de>
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When we iterate a master's config entries, what we generally care
about is the entry's stream map index, rather than the entry index
itself, so it's nice to have the iterator automatically assign the
former from the latter. Unfortunately, booting with KASAN reveals
the oversight that using a simple comma operator results in the
entry index being dereferenced before being checked for validity,
so we always access one element past the end of the fwspec array.
Flip things around so that the check always happens before the index
may be dereferenced.
Fixes: adfec2e709d2 ("iommu/arm-smmu: Convert to iommu_fwspec")
Reported-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
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We seem to have forgotten to check that iommu_fwspecs actually belong to
us before we go ahead and dereference their private data. Oops.
Fixes: 021bb8420d44 ("iommu/arm-smmu: Wire up generic configuration support")
Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
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We now delay installing our per-bus iommu_ops until we know an SMMU has
successfully probed, as they don't serve much purpose beforehand, and
doing so also avoids fights between multiple IOMMU drivers in a single
kernel. However, the upshot of passing the return value of bus_set_iommu()
back from our probe function is that if there happens to be more than
one SMMUv3 device in a system, the second and subsequent probes will
wind up returning -EBUSY to the driver core and getting torn down again.
Avoid re-setting ops if ours are already installed, so that any genuine
failures stand out.
Fixes: 08d4ca2a672b ("iommu/arm-smmu: Support non-PCI devices with SMMUv3")
CC: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
CC: Hanjun Guo <hanjun.guo@linaro.org>
Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
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The 32-bit ARM DMA configuration code predates the IOMMU core's default
domain functionality, and instead relies on allocating its own domains
and attaching any devices using the generic IOMMU binding to them.
Unfortunately, it does this relatively early on in the creation of the
device, before we've seen our add_device callback, which leads us to
attempt to operate on a half-configured master.
To avoid a crash, check for this situation on attach, but refuse to
play, as there's nothing we can do. This at least allows VFIO to keep
working for people who update their 32-bit DTs to the generic binding,
albeit with a few (innocuous) warnings from the DMA layer on boot.
Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
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git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 fix from Will Deacon:
"It's been pretty quiet on the fixes side of things for us, but Artem
reported a build failure introduced during the merge window that
appears with older GCCs that do not support asm goto. The fix is
bigger than I'd like, but it's a mechnical move of some constants to
break an include dependency between atomic.h and jump_label.h when
!HAVE_JUMP_LABEL.
Summary:
- Fix build failure on compilers without asm goto"
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64: Fix circular include of asm/lse.h through linux/jump_label.h
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Commit efd9e03facd0 ("arm64: Use static keys for CPU features")
introduced support for static keys in asm/cpufeature.h, including
linux/jump_label.h. When CC_HAVE_ASM_GOTO is not defined, this causes a
circular dependency via linux/atomic.h, asm/lse.h and asm/cpufeature.h.
This patch moves the capability macros out out of asm/cpufeature.h into
a separate asm/cpucaps.h and modifies some of the #includes accordingly.
Fixes: efd9e03facd0 ("arm64: Use static keys for CPU features")
Reported-by: Artem Savkov <asavkov@redhat.com>
Tested-by: Artem Savkov <asavkov@redhat.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging
Pull openrisc fix from Guenter Roeck:
"Fix openrisc crash caused by ro_init changes"
* tag 'openrisc-for-linus-v4.9-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging:
openrisc: Define __ro_after_init to avoid crash
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openrisc qemu tests fail with the following crash.
Unable to handle kernel access at virtual address 0xc0300c34
Oops#: 0001
CPU #: 0
PC: c016c710 SR: 0000ae67 SP: c1017e04
GPR00: 00000000 GPR01: c1017e04 GPR02: c0300c34 GPR03: c0300c34
GPR04: 00000000 GPR05: c0300cb0 GPR06: c0300c34 GPR07: 000000ff
GPR08: c107f074 GPR09: c0199ef4 GPR10: c1016000 GPR11: 00000000
GPR12: 00000000 GPR13: c107f044 GPR14: c0473774 GPR15: 07ce0000
GPR16: 00000000 GPR17: c107ed8a GPR18: 00009600 GPR19: c107f044
GPR20: c107ee74 GPR21: 00000003 GPR22: c0473770 GPR23: 00000033
GPR24: 000000bf GPR25: 00000019 GPR26: c046400c GPR27: 00000001
GPR28: c0464028 GPR29: c1018000 GPR30: 00000006 GPR31: ccf37483
RES: 00000000 oGPR11: ffffffff
Process swapper (pid: 1, stackpage=c1001960)
Stack: Stack dump [0xc1017cf8]:
sp + 00: 0xc1017e04
sp + 04: 0xc0300c34
sp + 08: 0xc0300c34
sp + 12: 0x00000000
...
Bisect points to commit d2ec3f77de8e ("pty: make ptmx file ops read-only
after init"). Fix by defining __ro_after_init for the openrisc
architecture, similar to parisc.
Fixes: d2ec3f77de8e ("pty: make ptmx file ops read-only after init")
Cc: Kees Cook <keescook@chromium.org>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Stafford Horne <shorne@gmail.com>
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