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I've switched jobs, so update my email address in MAINTAINERS
Signed-off-by: John Stultz <jstultz@google.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Sumit Semwal <sumit.semwal@linaro.org>
Link: https://lore.kernel.org/r/20220418212016.2669086-1-jstultz@google.com
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull irq fix from Thomas Gleixner:
"A fix for the threaded interrupt core.
A quick sequence of request/free_irq() can result in a hang because
the interrupt thread did not reach the thread function and got stopped
in the kthread core already. That leaves a state active counter
arround which makes a invocation of synchronized_irq() on that
interrupt hang forever.
Ensure that the thread reached the thread function in request_irq() to
prevent that"
* tag 'irq-urgent-2022-05-08' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
genirq: Synchronize interrupt thread startup
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A kernel hang can be observed when running setserial in a loop on a kernel
with force threaded interrupts. The sequence of events is:
setserial
open("/dev/ttyXXX")
request_irq()
do_stuff()
-> serial interrupt
-> wake(irq_thread)
desc->threads_active++;
close()
free_irq()
kthread_stop(irq_thread)
synchronize_irq() <- hangs because desc->threads_active != 0
The thread is created in request_irq() and woken up, but does not get on a
CPU to reach the actual thread function, which would handle the pending
wake-up. kthread_stop() sets the should stop condition which makes the
thread immediately exit, which in turn leaves the stale threads_active
count around.
This problem was introduced with commit 519cc8652b3a, which addressed a
interrupt sharing issue in the PCIe code.
Before that commit free_irq() invoked synchronize_irq(), which waits for
the hard interrupt handler and also for associated threads to complete.
To address the PCIe issue synchronize_irq() was replaced with
__synchronize_hardirq(), which only waits for the hard interrupt handler to
complete, but not for threaded handlers.
This was done under the assumption, that the interrupt thread already
reached the thread function and waits for a wake-up, which is guaranteed to
be handled before acting on the stop condition. The problematic case, that
the thread would not reach the thread function, was obviously overlooked.
Make sure that the interrupt thread is really started and reaches
thread_fn() before returning from __setup_irq().
This utilizes the existing wait queue in the interrupt descriptor. The
wait queue is unused for non-shared interrupts. For shared interrupts the
usage might cause a spurious wake-up of a waiter in synchronize_irq() or the
completion of a threaded handler might cause a spurious wake-up of the
waiter for the ready flag. Both are harmless and have no functional impact.
[ tglx: Amended changelog ]
Fixes: 519cc8652b3a ("genirq: Synchronize only with single thread on free_irq()")
Signed-off-by: Thomas Pfaff <tpfaff@pcs.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Marc Zyngier <maz@kernel.org>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/552fe7b4-9224-b183-bb87-a8f36d335690@pcs.com
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull locking fixlet from Thomas Gleixner:
"Just a email address update for MAINTAINERS and mailmap"
* tag 'locking-urgent-2022-05-08' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
futex: MAINTAINERS, .mailmap: Update André's email address
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Update futex entry to use my new professional email address.
Signed-off-by: André Almeida <andrealmeid@igalia.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20220421173254.29855-1-andrealmeid@igalia.com
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull PASID fix from Thomas Gleixner:
"A single bugfix for the PASID management code, which freed the PASID
too early. The PASID needs to be tied to the mm lifetime, not to the
address space lifetime"
* tag 'core-urgent-2022-05-08' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
mm: Fix PASID use-after-free issue
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The PASID is being freed too early. It needs to stay around until after
device drivers that might be using it have had a chance to clear it out
of the hardware.
The relevant refcounts are:
mmget() /mmput() refcount the mm's address space
mmgrab()/mmdrop() refcount the mm itself
The PASID is currently tied to the life of the mm's address space and freed
in __mmput(). This makes logical sense because the PASID can't be used
once the address space is gone.
But, this misses an important point: even after the address space is gone,
the PASID will still be programmed into a device. Device drivers might,
for instance, still need to flush operations that are outstanding and need
to use that PASID. They do this at file->release() time.
Device drivers call the IOMMU driver to hold a reference on the mm itself
and drop it at file->release() time. But, the IOMMU driver holds a
reference on the mm itself, not the address space. The address space (and
the PASID) is long gone by the time the driver tries to clean up. This is
effectively a use-after-free bug on the PASID.
To fix this, move the PASID free operation from __mmput() to __mmdrop().
This ensures that the IOMMU driver's existing mmgrab() keeps the PASID
allocated until it drops its mm reference.
Fixes: 701fac40384f ("iommu/sva: Assign a PASID to mm on PASID allocation and free it on mm exit")
Reported-by: Zhangfei Gao <zhangfei.gao@foxmail.com>
Suggested-by: Jean-Philippe Brucker <jean-philippe@linaro.org>
Suggested-by: Jacob Pan <jacob.jun.pan@linux.intel.com>
Signed-off-by: Fenghua Yu <fenghua.yu@intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Zhangfei Gao <zhangfei.gao@foxmail.com>
Reviewed-by: Jean-Philippe Brucker <jean-philippe@linaro.org>
Link: https://lore.kernel.org/r/20220428180041.806809-1-fenghua.yu@intel.com
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git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound fixes from Takashi Iwai:
"This became slightly larger as I've been off in the last weeks.
The majority of changes here is about ASoC, fixes for dmaengine
and for addressing issues reported by CI, as well as other
device-specific small fixes.
Also, fixes for FireWire core stack and the usual HD-audio quirks
are included"
* tag 'sound-5.18-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (23 commits)
ASoC: SOF: Fix NULL pointer exception in sof_pci_probe callback
ASoC: ops: Validate input values in snd_soc_put_volsw_range()
ASoC: dmaengine: Restore NULL prepare_slave_config() callback
ASoC: atmel: mchp-pdmc: set prepare_slave_config
ASoC: max98090: Generate notifications on changes for custom control
ASoC: max98090: Reject invalid values in custom control put()
ALSA: fireworks: fix wrong return count shorter than expected by 4 bytes
ALSA: hda/realtek: Add quirk for Yoga Duet 7 13ITL6 speakers
firewire: core: extend card->lock in fw_core_handle_bus_reset
firewire: remove check of list iterator against head past the loop body
firewire: fix potential uaf in outbound_phy_packet_callback()
ASoC: rt9120: Correct the reg 0x09 size to one byte
ALSA: hda/realtek: Enable mute/micmute LEDs support for HP Laptops
ALSA: hda/realtek: Fix mute led issue on thinkpad with cs35l41 s-codec
ASoC: meson: axg-card: Fix nonatomic links
ASoC: meson: axg-tdm-interface: Fix formatters in trigger"
ASoC: soc-ops: fix error handling
ASoC: meson: Fix event generation for G12A tohdmi mux
ASoC: meson: Fix event generation for AUI CODEC mux
ASoC: meson: Fix event generation for AUI ACODEC mux
...
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https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus
ASoC: Fixes for v5.18
A larger collection of fixes than I'd like, mainly because mixer-test
is making it's way into the CI systems and turning up issues on a wider
range of systems. The most substantial thing though is a revert and an
alternative fix for a dmaengine issue where the fix caused disruption
for some other configurations, the core fix is backed out an a driver
specific thing done instead.
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We are accessing "desc->ops" in sof_pci_probe without checking "desc"
pointer. This results in NULL pointer exception if pci_id->driver_data
i.e desc pointer isn't defined in sof device probe:
BUG: kernel NULL pointer dereference, address: 0000000000000060
PGD 0 P4D 0
Oops: 0000 [#1] PREEMPT SMP NOPTI
RIP: 0010:sof_pci_probe+0x1e/0x17f [snd_sof_pci]
Code: Unable to access opcode bytes at RIP 0xffffffffc043dff4.
RSP: 0018:ffffac4b03b9b8d8 EFLAGS: 00010246
Add NULL pointer check for sof_dev_desc pointer to avoid such exception.
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Signed-off-by: Ajit Kumar Pandey <AjitKumar.Pandey@amd.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20220426183357.102155-1-pierre-louis.bossart@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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Check that values written via snd_soc_put_volsw_range() are
within the range advertised by the control, ensuring that we
don't write out of spec values to the hardware.
Signed-off-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20220423131239.3375261-1-broonie@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>
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As pointed out by Sascha Hauer, this patch changes:
if (pmc->config && !pcm->config->prepare_slave_config)
<do nothing>
to:
if (pmc->config && !pcm->config->prepare_slave_config)
snd_dmaengine_pcm_prepare_slave_config()
This breaks the drivers that do not need a call to
dmaengine_slave_config(). Drivers that still need to call
snd_dmaengine_pcm_prepare_slave_config(), but have a NULL
pcm->config->prepare_slave_config should use
snd_dmaengine_pcm_prepare_slave_config() as their prepare_slave_config
callback.
Fixes: 9a1e13440a4f ("ASoC: dmaengine: do not use a NULL prepare_slave_config() callback")
Reported-by: Sascha Hauer <sha@pengutronix.de>
Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com>
Link: https://lore.kernel.org/r/20220421125403.2180824-1-codrin.ciubotariu@microchip.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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Since a pointer to struct snd_dmaengine_pcm_config is passed,
snd_dmaengine_pcm_prepare_slave_config() is no longer called unless it's
explicitly set in prepare_slave_config.
Fixes: 50291652af52 ("ASoC: atmel: mchp-pdmc: add PDMC driver")
Suggested-by: Sascha Hauer <sha@pengutronix.de>
Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com>
Link: https://lore.kernel.org/r/20220421125403.2180824-2-codrin.ciubotariu@microchip.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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The max98090 driver has some custom controls which share a put() function
which returns 0 unconditionally, meaning that events are not generated
when the value changes. Fix that.
Signed-off-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20220420193454.2647908-2-broonie@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>
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The max98090 driver has a custom put function for some controls which can
only be updated in certain circumstances which makes no effort to validate
that input is suitable for the control, allowing out of spec values to be
written to the hardware and presented to userspace. Fix this by returning
an error when invalid values are written.
Signed-off-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20220420193454.2647908-1-broonie@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>
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Correct the reg 0x09 size to one byte.
Signed-off-by: ChiYuan Huang <cy_huang@richtek.com>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/1650608810-3829-1-git-send-email-u0084500@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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This commit e138233e56e9829e65b6293887063a1a3ccb2d68 causes the
following system crash when using audio on G12A/G12B & SM1 systems:
BUG: sleeping function called from invalid context at kernel/locking/mutex.c:282
in_atomic(): 1, irqs_disabled(): 128, non_block: 0, pid: 0, name: swapper/0
preempt_count: 10001, expected: 0
RCU nest depth: 0, expected: 0
Preemption disabled at:
schedule_preempt_disabled+0x20/0x2c
mutex_lock+0x24/0x60
_snd_pcm_stream_lock_irqsave+0x20/0x3c
snd_pcm_period_elapsed+0x24/0xa4
axg_fifo_pcm_irq_block+0x64/0xdc
__handle_irq_event_percpu+0x104/0x264
handle_irq_event+0x48/0xb4
...
start_kernel+0x3f0/0x484
__primary_switched+0xc0/0xc8
Revert this commit until the crash is fixed.
Fixes: e138233e56e9829e65b6 ("ASoC: meson: axg-card: make links nonatomic")
Reported-by: Dmitry Shmidt <dimitrysh@google.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Acked-by: Jerome Brunet <jbrunet@baylibre.com>
Link: https://lore.kernel.org/r/20220421155725.2589089-2-narmstrong@baylibre.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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This reverts commit bf5e4887eeddb48480568466536aa08ec7f179a5 because
the following and required commit e138233e56e9829e65b6293887063a1a3ccb2d68
causes the following system crash when using audio:
BUG: sleeping function called from invalid context at kernel/locking/mutex.c:282
Fixes: bf5e4887eeddb4848056846 ("ASoC: meson: axg-tdm-interface: manage formatters in trigger")
Reported-by: Dmitry Shmidt <dimitrysh@google.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Acked-by: Jerome Brunet <jbrunet@baylibre.com>
Link: https://lore.kernel.org/r/20220421155725.2589089-1-narmstrong@baylibre.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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cppcheck throws the following warning:
sound/soc/soc-ops.c:461:8: style: Variable 'ret' is assigned a value
that is never used. [unreadVariable]
ret = err;
^
This seems to be a missing change in the return value.
Fixes: 7f3d90a351968 ("ASoC: ops: Fix stereo change notifications in snd_soc_put_volsw_sx()")
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Reviewed-by: Rander Wang <rander.wang@intel.com>
Reviewed-by: Péter Ujfalusi <peter.ujfalusi@linux.intel.com>
Link: https://lore.kernel.org/r/20220421162328.302017-1-pierre-louis.bossart@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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The G12A tohdmi has a custom put() operation which returns 0 when the value
of the mux changes, meaning that events are not generated for userspace.
Change to return 1 in this case, the function returns early in the case
where there is no change.
Signed-off-by: Mark Brown <broonie@kernel.org>
Reviewed-by: Jerome Brunet <jbrunet@baylibre.com>
Link: https://lore.kernel.org/r/20220421123803.292063-4-broonie@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>
Cc: stable@vger.kernel.org
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The AIU CODEC has a custom put() operation which returns 0 when the value
of the mux changes, meaning that events are not generated for userspace.
Change to return 1 in this case, the function returns early in the case
where there is no change.
Signed-off-by: Mark Brown <broonie@kernel.org>
Reviewed-by: Jerome Brunet <jbrunet@baylibre.com>
Link: https://lore.kernel.org/r/20220421123803.292063-3-broonie@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>
Cc: stable@vger.kernel.org
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The AIU ACODEC has a custom put() operation which returns 0 when the value
of the mux changes, meaning that events are not generated for userspace.
Change to return 1 in this case, the function returns early in the case
where there is no change.
Signed-off-by: Mark Brown <broonie@kernel.org>
Reviewed-by: Jerome Brunet <jbrunet@baylibre.com>
Link: https://lore.kernel.org/r/20220421123803.292063-2-broonie@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>
Cc: stable@vger.kernel.org
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The tone generator frequency control just returns 0 on successful write,
not a boolean value indicating if there was a change or not. Compare
what was written with the value that was there previously so that
notifications are generated appropriately when the value changes.
Signed-off-by: Mark Brown <broonie@kernel.org>
Reviewed-by: Adam Thomson <Adam.Thomson.Opensource@diasemi.com>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20220420133437.569229-1-broonie@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>
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In asoc_simple_shutdown() the snd_soc_dai_set_sysclk() function
is called twice with input direction SND_SOC_CLOCK_IN.
Restore one call with output direction SND_SOC_CLOCK_OUT.
Fixes: 5ca2ab459817 ("ASoC: simple-card-utils: Add new system-clock-fixed flag")
Signed-off-by: Olivier Moysan <olivier.moysan@foss.st.com>
Link: https://lore.kernel.org/r/20220412111658.11015-1-olivier.moysan@foss.st.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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The WM8958 DSP controls all return 0 on successful write, not a boolean
value indicating if the write changed the value of the control. Fix this
by returning 1 after a change, there is already a check at the start of
each put() that skips the function in the case that there is no change.
Signed-off-by: Mark Brown <broonie@kernel.org>
Acked-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20220416125408.197440-1-broonie@kernel.org
Cc: stable@vger.kernel.org
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ALSA fireworks driver has a bug in its initial state to return count
shorter than expected by 4 bytes to userspace applications when handling
response frame for Echo Audio Fireworks transaction. It's due to missing
addition of the size for the type of event in ALSA firewire stack.
Fixes: 555e8a8f7f14 ("ALSA: fireworks: Add command/response functionality into hwdep interface")
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Link: https://lore.kernel.org/r/20220424102428.21109-1-o-takashi@sakamocchi.jp
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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Lenovo Yoga Duet 7 13ITL6 has Realtek ALC287 and built-in
speakers do not work out of the box. The fix developed for
Yoga 7i 14ITL5 also enables speaker output for this model.
Signed-off-by: Zihao Wang <wzhd@ustc.edu>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20220424084120.74125-1-wzhd@ustc.edu
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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Pull FireWire fixes
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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card->local_node and card->bm_retries are both always accessed under
card->lock.
fw_core_handle_bus_reset has a check whose condition depends on
card->local_node and whose body writes to card->bm_retries.
Both of these accesses are not under card->lock. Move the lock acquiring
of card->lock to before this check such that these accesses do happen
when card->lock is held.
fw_destroy_nodes is called inside the check.
Since fw_destroy_nodes already acquires card->lock inside its function
body, move this out to the callsites of fw_destroy_nodes.
Also add a comment to indicate which locking is necessary when calling
fw_destroy_nodes.
Cc: <stable@vger.kernel.org>
Signed-off-by: Niels Dossche <dossche.niels@gmail.com>
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Link: https://lore.kernel.org/r/20220409041243.603210-4-o-takashi@sakamocchi.jp
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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When list_for_each_entry() completes the iteration over the whole list
without breaking the loop, the iterator value will be a bogus pointer
computed based on the head element.
While it is safe to use the pointer to determine if it was computed
based on the head element, either with list_entry_is_head() or
&pos->member == head, using the iterator variable after the loop should
be avoided.
In preparation to limit the scope of a list iterator to the list
traversal loop, use a dedicated pointer to point to the found element [1].
Link: https://lore.kernel.org/all/CAHk-=wgRr_D8CB-D9Kg-c=EHreAsk5SqXPwr9Y7k9sA6cWXJ6w@mail.gmail.com/ [1]
Cc: <stable@vger.kernel.org>
Signed-off-by: Jakob Koschel <jakobkoschel@gmail.com>
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Link: https://lore.kernel.org/r/20220409041243.603210-3-o-takashi@sakamocchi.jp
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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&e->event and e point to the same address, and &e->event could
be freed in queue_event. So there is a potential uaf issue if
we dereference e after calling queue_event(). Fix this by adding
a temporary variable to maintain e->client in advance, this can
avoid the potential uaf issue.
Cc: <stable@vger.kernel.org>
Signed-off-by: Chengfeng Ye <cyeaa@connect.ust.hk>
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Link: https://lore.kernel.org/r/20220409041243.603210-2-o-takashi@sakamocchi.jp
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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On HP Laptops, requires the same ALC285_FIXUP_HP_GPIO_LED quirk to
make its audio LEDs work.
So apply the quirk, and make it the last one since it's an LED quirk.
Signed-off-by: Andy Chi <andy.chi@canonical.com>
Fixes: 07bcab93946c ("ALSA: hda/realtek: Add support for HP Laptops")
Link: https://lore.kernel.org/r/20220422090845.230071-1-andy.chi@canonical.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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The quirk ALC287_FIXUP_CS35L41_I2C_2 needs to chain the quirk
ALC269_FIXUP_THINKPAD_ACPI, otherwise the mute led will not work if a
thinkpad machine applies that quirk.
And it will be safe if non-thinkpad machines apply that quirk since
hda_fixup_thinkpad_acpi() will check and return in this case.
Fixes: ae7abe36e352e ("ALSA: hda/realtek: Add CS35L41 support for Thinkpad laptops")
Signed-off-by: Hui Wang <hui.wang@canonical.com>
Link: https://lore.kernel.org/r/20220422073937.10073-1-hui.wang@canonical.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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The last two users were floppy.c and ataflop.c respectively, it was
verified that no other drivers makes use of this, so let's remove it.
Suggested-by: Linus Torvalds <torvalds@linuxfoundation.org>
Cc: Minh Yuan <yuanmingbuaa@gmail.com>
Cc: Denis Efremov <efremov@linux.com>,
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Christoph Hellwig <hch@lst.de>
Signed-off-by: Willy Tarreau <w@1wt.eu>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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This is the last driver making use of fd_request->error_count, which is
easy to get wrong as was shown in floppy.c. We don't need to keep it
there, it can be moved to the atari_floppy_struct instead, so let's do
this.
Suggested-by: Linus Torvalds <torvalds@linuxfoundation.org>
Cc: Minh Yuan <yuanmingbuaa@gmail.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Willy Tarreau <w@1wt.eu>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Interrupt handler bad_flp_intr() may cause a UAF on the recently freed
request just to increment the error count. There's no point keeping
that one in the request anyway, and since the interrupt handler uses a
static pointer to the error which cannot be kept in sync with the
pending request, better make it use a static error counter that's reset
for each new request. This reset now happens when entering
redo_fd_request() for a new request via set_next_request().
One initial concern about a single error counter was that errors on one
floppy drive could be reported on another one, but this problem is not
real given that the driver uses a single drive at a time, as that
PC-compatible controllers also have this limitation by using shared
signals. As such the error count is always for the "current" drive.
Reported-by: Minh Yuan <yuanmingbuaa@gmail.com>
Suggested-by: Linus Torvalds <torvalds@linuxfoundation.org>
Tested-by: Denis Efremov <efremov@linux.com>
Signed-off-by: Willy Tarreau <w@1wt.eu>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux
Pull gpio fixes from Bartosz Golaszewski:
- fix the bounds check for the 'gpio-reserved-ranges' device property
in gpiolib-of
- drop the assignment of the pwm base number in gpio-mvebu (this was
missed by the patch doing it globally for all pwm drivers)
- fix the fwnode assignment (use own fwnode, not the parent's one) for
the GPIO irqchip in gpio-visconti
- update the irq_stat field before checking the trigger field in
gpio-pca953x
- update GPIO entry in MAINTAINERS
* tag 'gpio-fixes-for-v5.18-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux:
gpio: pca953x: fix irq_stat not updated when irq is disabled (irq_mask not set)
gpio: visconti: Fix fwnode of GPIO IRQ
MAINTAINERS: update the GPIO git tree entry
gpio: mvebu: drop pwm base assignment
gpiolib: of: fix bounds check for 'gpio-reserved-ranges'
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When one port's input state get inverted (eg. from low to hight) after
pca953x_irq_setup but before setting irq_mask (by some other driver such as
"gpio-keys"), the next inversion of this port (eg. from hight to low) will not
be triggered any more (because irq_stat is not updated at the first time). Issue
should be fixed after this commit.
Fixes: 89ea8bbe9c3e ("gpio: pca953x.c: add interrupt handling capability")
Signed-off-by: Puyou Lu <puyou.lu@gmail.com>
Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
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The fwnode of GPIO IRQ must be set to its own fwnode, not the fwnode of the
parent IRQ. Therefore, this sets own fwnode instead of the parent IRQ fwnode to
GPIO IRQ's.
Fixes: 2ad74f40dacc ("gpio: visconti: Add Toshiba Visconti GPIO support")
Signed-off-by: Nobuhiro Iwamatsu <nobuhiro1.iwamatsu@toshiba.co.jp>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
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My git tree has become the de facto main GPIO tree. Update the
MAINTAINERS file to reflect that.
Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
Reported-by: Baruch Siach <baruch@tkos.co.il>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
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pwmchip_add() unconditionally assigns the base ID dynamically. Commit
f9a8ee8c8bcd1 ("pwm: Always allocate PWM chip base ID dynamically")
dropped all base assignment from drivers under drivers/pwm/. It missed
this driver. Fix that.
Fixes: f9a8ee8c8bcd1 ("pwm: Always allocate PWM chip base ID dynamically")
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Reviewed-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
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Gpiolib interprets the elements of "gpio-reserved-ranges" as "start,size"
because it clears "size" bits starting from the "start" bit in the according
bitmap. So it has to use "greater" instead of "greater or equal" when performs
bounds check to make sure that GPIOs are in the available range.
Previous implementation skipped ranges that include the last GPIO in
the range.
I wrote the mail to the maintainers
(https://lore.kernel.org/linux-gpio/20220412115554.159435-1-andrei.lalaev@emlid.com/T/#u)
of the questioned DTSes (because I couldn't understand how the maintainers
interpreted this property), but I haven't received a response.
Since the questioned DTSes use "gpio-reserved-ranges = <0 4>"
(i.e., the beginning of the range), this patch doesn't affect these DTSes at all.
TBH this patch doesn't break any existing DTSes because none of them
reserve gpios at the end of range.
Fixes: 726cb3ba4969 ("gpiolib: Support 'gpio-reserved-ranges' property")
Signed-off-by: Andrei Lalaev <andrei.lalaev@emlid.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Cc: stable@vger.kernel.org
Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
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Pull block fixes from Jens Axboe:
"A single revert for a change that isn't needed in 5.18, and a small
series for s390/dasd"
* tag 'block-5.18-2022-05-06' of git://git.kernel.dk/linux-block:
s390/dasd: Use kzalloc instead of kmalloc/memset
s390/dasd: Fix read inconsistency for ESE DASD devices
s390/dasd: Fix read for ESE with blksize < 4k
s390/dasd: prevent double format of tracks for ESE devices
s390/dasd: fix data corruption for ESE devices
Revert "block: release rq qos structures for queue without disk"
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Use kzalloc rather than duplicating its implementation, which
makes code simple and easy to understand.
Signed-off-by: Haowen Bai <baihaowen@meizu.com>
Reviewed-by: Sven Schnelle <svens@linux.ibm.com>
Signed-off-by: Stefan Haberland <sth@linux.ibm.com>
Link: https://lore.kernel.org/r/20220505141733.1989450-6-sth@linux.ibm.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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Read requests that return with NRF error are partially completed in
dasd_eckd_ese_read(). The function keeps track of the amount of
processed bytes and the driver will eventually return this information
back to the block layer for further processing via __dasd_cleanup_cqr()
when the request is in the final stage of processing (from the driver's
perspective).
For this, blk_update_request() is used which requires the number of
bytes to complete the request. As per documentation the nr_bytes
parameter is described as follows:
"number of bytes to complete for @req".
This was mistakenly interpreted as "number of bytes _left_ for @req"
leading to new requests with incorrect data length. The consequence are
inconsistent and completely wrong read requests as data from random
memory areas are read back.
Fix this by correctly specifying the amount of bytes that should be used
to complete the request.
Fixes: 5e6bdd37c552 ("s390/dasd: fix data corruption for thin provisioned devices")
Cc: stable@vger.kernel.org # 5.3+
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
Reviewed-by: Stefan Haberland <sth@linux.ibm.com>
Link: https://lore.kernel.org/r/20220505141733.1989450-5-sth@linux.ibm.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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When reading unformatted tracks on ESE devices, the corresponding memory
areas are simply set to zero for each segment. This is done incorrectly
for blocksizes < 4096.
There are two problems. First, the increment of dst is done using the
counter of the loop (off), which is increased by blksize every
iteration. This leads to a much bigger increment for dst as actually
intended. Second, the increment of dst is done before the memory area
is set to 0, skipping a significant amount of bytes of memory.
This leads to illegal overwriting of memory and ultimately to a kernel
panic.
This is not a problem with 4k blocksize because
blk_queue_max_segment_size is set to PAGE_SIZE, always resulting in a
single iteration for the inner segment loop (bv.bv_len == blksize). The
incorrectly used 'off' value to increment dst is 0 and the correct
memory area is used.
In order to fix this for blksize < 4k, increment dst correctly using the
blksize and only do it at the end of the loop.
Fixes: 5e2b17e712cf ("s390/dasd: Add dynamic formatting support for ESE volumes")
Cc: stable@vger.kernel.org # v5.3+
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
Reviewed-by: Stefan Haberland <sth@linux.ibm.com>
Link: https://lore.kernel.org/r/20220505141733.1989450-4-sth@linux.ibm.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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For ESE devices we get an error for write operations on an unformatted
track. Afterwards the track will be formatted and the IO operation
restarted.
When using alias devices a track might be accessed by multiple requests
simultaneously and there is a race window that a track gets formatted
twice resulting in data loss.
Prevent this by remembering the amount of formatted tracks when starting
a request and comparing this number before actually formatting a track
on the fly. If the number has changed there is a chance that the current
track was finally formatted in between. As a result do not format the
track and restart the current IO to check.
The number of formatted tracks does not match the overall number of
formatted tracks on the device and it might wrap around but this is no
problem. It is only needed to recognize that a track has been formatted at
all in between.
Fixes: 5e2b17e712cf ("s390/dasd: Add dynamic formatting support for ESE volumes")
Cc: stable@vger.kernel.org # 5.3+
Signed-off-by: Stefan Haberland <sth@linux.ibm.com>
Reviewed-by: Jan Hoeppner <hoeppner@linux.ibm.com>
Link: https://lore.kernel.org/r/20220505141733.1989450-3-sth@linux.ibm.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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For ESE devices we get an error when accessing an unformatted track.
The handling of this error will return zero data for read requests and
format the track on demand before writing to it. To do this the code needs
to distinguish between read and write requests. This is done with data from
the blocklayer request. A pointer to the blocklayer request is stored in
the CQR.
If there is an error on the device an ERP request is built to do error
recovery. While the ERP request is mostly a copy of the original CQR the
pointer to the blocklayer request is not copied to not accidentally pass
it back to the blocklayer without cleanup.
This leads to the error that during ESE handling after an ERP request was
built it is not possible to determine the IO direction. This leads to the
formatting of a track for read requests which might in turn lead to data
corruption.
Fixes: 5e2b17e712cf ("s390/dasd: Add dynamic formatting support for ESE volumes")
Cc: stable@vger.kernel.org # 5.3+
Signed-off-by: Stefan Haberland <sth@linux.ibm.com>
Reviewed-by: Jan Hoeppner <hoeppner@linux.ibm.com>
Link: https://lore.kernel.org/r/20220505141733.1989450-2-sth@linux.ibm.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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This reverts commit daaca3522a8e67c46e39ef09c1d542e866f85f3b.
Commit daaca3522a8e ("block: release rq qos structures for queue without
disk") is only needed for v5.15~v5.17, and isn't needed for v5.18, so
revert it.
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Link: https://lore.kernel.org/r/20220426024936.3321341-1-ming.lei@redhat.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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Pull io_uring fix from Jens Axboe:
"Just a single file assignment fix this week"
* tag 'io_uring-5.18-2022-05-06' of git://git.kernel.dk/linux-block:
io_uring: assign non-fixed early for async work
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