PCM OSS read/write loops keep taking the mutex lock for the whole
read/write, and this might take very long when the exceptionally high
amount of data is given. Also, since it invokes with mutex_lock(),
the concurrent read/write becomes unbreakable.
This patch tries to address these issues by replacing mutex_lock()
with mutex_lock_interruptible(), and also splits / re-takes the lock
at each read/write period chunk, so that it can switch the context
more finely if requested.
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
The loops for read and write in PCM OSS emulation have no proper check
of pending signals, and they keep processing even after user tries to
break. This results in a very long delay, often seen as RCU stall
when a huge unprocessed bytes remain queued. The bug could be easily
triggered by syzkaller.
As a simple workaround, this patch adds the proper check of pending
signals and aborts the loop appropriately.
Reported-by: syzbot+993cb4cfcbbff3947c21@syzkaller.appspotmail.com
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Add ALC225 its own depop functions for alc_init and alc_shutup.
Add depop optimize step for headset mode functions.
Signed-off-by: Kailang Yang <kailang@realtek.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Quite a big update here, mostly in new device support and some big
updates for older drivers too. The main core work continues to be
Morimoto-san's efforts on modernising drivers to use the component
layer.
- Lots more updates from Morimoto-san to move more things into the
component level.
- Large cleanups of some of the TI CODEC drivers from Andrew F. Davis.
- Even more quirks and cleanups of quirks for x86 systems.
- Refactoring of the Freescale SSI driver from Nicolin Chen in
preparation for some more substantive improvements which are
currently in review.
- New drivers for Allwinner A83T, Maxim MAX89373, SocioNext UiniPhier
EVEA Tempo Semiconductor TSCS42xx and TI PCM816x, TAS5722 and TAS6424
devices.
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Merge tag 'asoc-v4.16' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-next
ASoC: Updates for v4.16
Quite a big update here, mostly in new device support and some big
updates for older drivers too. The main core work continues to be
Morimoto-san's efforts on modernising drivers to use the component
layer.
- Lots more updates from Morimoto-san to move more things into the
component level.
- Large cleanups of some of the TI CODEC drivers from Andrew F. Davis.
- Even more quirks and cleanups of quirks for x86 systems.
- Refactoring of the Freescale SSI driver from Nicolin Chen in
preparation for some more substantive improvements which are
currently in review.
- New drivers for Allwinner A83T, Maxim MAX89373, SocioNext UiniPhier
EVEA Tempo Semiconductor TSCS42xx and TI PCM816x, TAS5722 and TAS6424
devices.
The aloop driver tries to update the hw constraints of the connected
target on the cable of the opened PCM substream. This is done by
adding the extra hw constraints rules referring to the substream
runtime->hw fields, while the other substream may update the runtime
hw of another side on the fly.
This is, however, racy and may result in the inconsistent values when
both PCM streams perform the prepare concurrently. One of the reason
is that it overwrites the other's runtime->hw field; which is not only
racy but also broken when it's called before the open of another side
finishes. And, since the reference to runtime->hw isn't protected,
the concurrent write may give the partial value update and become
inconsistent.
This patch is an attempt to fix and clean up:
- The prepare doesn't change the runtime->hw of other side any longer,
but only update the cable->hw that is referred commonly.
- The extra rules refer to the loopback_pcm object instead of the
runtime->hw. The actual hw is deduced from cable->hw.
- The extra rules take the cable_lock to protect against the race.
Fixes: b1c73fc8e6 ("ALSA: snd-aloop: Fix hw_params restrictions and checking")
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
The extra hw constraint rule for the formats the aloop driver
introduced has a slight flaw, where it doesn't return a positive value
when the mask got changed. It came from the fact that it's basically
a copy&paste from snd_hw_constraint_mask64(). The original code is
supposed to be a single-shot and it modifies the mask bits only once
and never after, while what we need for aloop is the dynamic hw rule
that limits the mask bits.
This difference results in the inconsistent state, as the hw_refine
doesn't apply the dependencies fully. The worse and surprisingly
result is that it causes a crash in OSS emulation when multiple
full-duplex reads/writes are performed concurrently (I leave why it
triggers Oops to readers as a homework).
For fixing this, replace a few open-codes with the standard
snd_mask_*() macros.
Reported-by: syzbot+3902b5220e8ca27889ca@syzkaller.appspotmail.com
Fixes: b1c73fc8e6 ("ALSA: snd-aloop: Fix hw_params restrictions and checking")
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
The aloop runtime object and its assignment in the cable are left even
when opening a substream fails. This doesn't mean any memory leak,
but it still keeps the invalid pointer that may be referred by the
another side of the cable spontaneously, which is a potential Oops
cause.
Clean up the cable assignment and the empty cable upon the error path
properly.
Fixes: 597603d615 ("ALSA: introduce the snd-aloop module for the PCM loopback")
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
The commit 9027c4639e ("ALSA: pcm: Call ack() whenever appl_ptr is
updated") introduced the possible error code returned from the PCM
rewind ioctl. Basically the change was for handling the indirect PCM
more correctly, but ironically, it caused rather a side-effect:
PulseAudio gets pissed off when receiving an error from rewind, throws
everything away and stops processing further, resulting in the
silence.
It's clearly a failure in the application side, so the best would be
to fix that bug in PA. OTOH, PA is mostly the only user of the rewind
feature, so it's not good to slap the sole customer.
This patch tries to mitigate the situation: instead of returning an
error, now the rewind ioctl returns zero when the driver can't rewind.
It indicates that no rewind was performed, so the behavior is
consistent, at least.
Fixes: 9027c4639e ("ALSA: pcm: Call ack() whenever appl_ptr is updated")
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Currently there is no support for TSCS42xx audio CODECs.
Add support for TSCS42xx audio CODECs.
Reviewed-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Acked-by: Philippe Ombredanne <pombredanne@nexb.com>
Signed-off-by: Steven Eckhoff <steven.eckhoff.opensource@gmail.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
The minimum period size (in frames) must be not lower than the FIFO size
of McASP and in general too small period size would easily result underrun
in applications as eDMA - the most common DMA servicing McASP have support
for limited number of periods.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Since unit addresses are passed to simple-audio-card,dai-link a
corresponding 'reg' property is needed, otherwise dtc complains
(when building with W=1) in case someone copies the bindings example
into a real dts file:
Warning (unit_address_vs_reg): Node /sound-digital/simple-audio-card,dai-link@0 has a unit name, but no reg property
Improve the example by passing the correct 'reg' properties.
Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
In the OSS emulation plugin builder where the frame size is parsed in
the plugin chain, some places miss the possible errors returned from
the plugin src_ or dst_frames callback.
This patch papers over such places.
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
As the new MFD parent is in place, modify MT2701 AFE documentation to
adapt it. Also add three core clocks in example.
Signed-off-by: Ryder Lee <ryder.lee@mediatek.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
As the new MFD parent is in place, modify MT2701 AFE driver to adapt it.
Signed-off-by: Ryder Lee <ryder.lee@mediatek.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
We need to set a corresponding control bit before powering micbias up.
Signed-off-by: Bard Liao <bardliao@realtek.com>
[hdegoede@redhat.com: Remove 2 unused variable declarations]
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Register "micbias1" and "micbias2" to supply widgets as modern drivers do.
This should not cause any (new) issues for existing users of the codec,
since micbias support is broken anyways. Micbias support needs the
RT5645_MICBIAS?_POW_CTRL_SEL bits in the RT5645_GEN_CTRL2 register to be
updated when enabled/disabled which we currently do not do.
The updating of these bits will be fixed in a follow-up commit.
Signed-off-by: Bard Liao <bardliao@realtek.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Add 'assigned-clocks*' properties which are used to initialize default
domain sources of audio system. we could configure different sets of
input clocks through DTS now. Hence driver no longer cares about that.
Also we change some 'clock-names' to make them more generic so that
other chips can reuse gracefully.
Signed-off-by: Ryder Lee <ryder.lee@mediatek.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
I got the following kernel warning when loading snd-soc-skl module on
Dell Latitude 7270 laptop:
memremap attempted on mixed range 0x0000000000000000 size: 0x0
WARNING: CPU: 0 PID: 484 at kernel/memremap.c:98 memremap+0x8a/0x180
Call Trace:
skl_nhlt_init+0x82/0xf0 [snd_soc_skl]
skl_probe+0x2ee/0x7c0 [snd_soc_skl]
....
It seems that the machine doesn't support the SKL DSP gives the empty
NHLT entry, and it triggers the warning. For avoiding it, let do the
zero check before calling memremap().
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Mark Brown <broonie@kernel.org>
Cleanup unused code such as 'i2s_num' guard, headers, indentation
and some defines.
Signed-off-by: Ryder Lee <ryder.lee@mediatek.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Reworks clock part to make it more reasonable. The current changes are:
- Replace regmap operations by CCF APIs. Doing so, we just need to handle
the element clocks and can also get accurate information via CCF.
- Rename clocks to make them more generic so that the future revisions
of the IP can adapt gracefully.
- Regroup 'aud_clks[]' by usage - the basic needs and I2S parts:
The new code just keep the common clocks in array and let SoC self decide
I2S numbers - If future chips have different sets of channels we will
add a little more abstract here.
Moreover, this patch moves I2S clocks to the struct mt2701_i2s_data
so that we can easily manage them when calls .prepare() and .shutdown().
Signed-off-by: Ryder Lee <ryder.lee@mediatek.com>
Tested-by: Garlic Tseng <garlic.tseng@mediatek.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
If the result of (min + max) is negative in functions
snd_soc_get_volsw_sx() or snd_soc_put_volsw_sx(), there
will be an overflow for the variable 'mask'.
UBSAN: Undefined behaviour in sound/soc/soc-ops.c:382:6
signed integer overflow:
-2147483648 - 1 cannot be represented in type 'int'
Fix this by updating the variable type of 'mask' to unsigned int.
Signed-off-by: Banajit Goswami <bgoswami@codeaurora.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
Takashi Iwai
Kailang Yang
Mark Brown
Steven Eckhoff
Peter Ujfalusi
Fabio Estevam
Ryan Lee
Ryder Lee
Bard Liao
Kuninori Morimoto
Banajit Goswami