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Takashi Iwai 3c75c0ea5d
ASoC: soc-pcm: Fix DPCM lockdep warning due to nested stream locks 
The recent change for DPCM locking caused spurious lockdep warnings.
Actually the warnings are false-positive, as those are triggered due
to the nested stream locks for FE and BE.  Since both locks belong to
the same lock class, lockdep sees it as if a deadlock.

For fixing this, we need to take PCM stream locks for BE with the
nested lock primitives.  Since currently snd_pcm_stream_lock*() helper
assumes only the top-level single locking, a new helper function
snd_pcm_stream_lock_irqsave_nested() is defined for a single-depth
nested lock, which is now used in the BE DAI trigger that is always
performed inside a FE stream lock.

Fixes: b2ae806630 ("ASoC: soc-pcm: serialize BE triggers")
Reported-and-tested-by: Hans de Goede <hdegoede@redhat.com>
Reported-and-tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Link: https://lore.kernel.org/r/73018f3c-9769-72ea-0325-b3f8e2381e30@redhat.com
Link: https://lore.kernel.org/alsa-devel/9a0abddd-49e9-872d-2f00-a1697340f786@samsung.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Link: https://lore.kernel.org/r/20220119155249.26754-2-tiwai@suse.de
Signed-off-by: Mark Brown <broonie@kernel.org>
2022-01-28 15:59:16 +00:00
..
ac97 bus: Make remove callback return void 2021-07-21 11:53:42 +02:00
aoa Kbuild updates for v5.15 2021-09-03 15:33:47 -07:00
arm ALSA: pxa2xx: Use managed PCM buffer allocation 2021-08-04 08:08:21 +02:00
atmel
core ASoC: soc-pcm: Fix DPCM lockdep warning due to nested stream locks 2022-01-28 15:59:16 +00:00
drivers ALSA: pcsp: Make hrtimer forwarding more robust 2021-09-28 10:58:08 +02:00
firewire ALSA: fireworks: add support for Loud Onyx 1200f quirk 2021-11-11 14:02:02 +01:00
hda ASoC: Updates for v5.16 2021-11-01 16:58:27 +01:00
i2c ALSA: i2c: tea6330t: Remove redundant initialization of variable err 2021-06-12 09:32:14 +02:00
isa ALSA: gus: fix null pointer dereference on pointer block 2021-10-26 08:02:16 +02:00
mips ALSA: n64: check return value after calling platform_get_resource() 2021-06-12 09:31:13 +02:00
oss sound/oss/dmasound: Remove superfluous "break" 2021-05-27 08:24:23 +02:00
parisc parisc architecture updates for kernel 5.15: 2021-09-02 13:16:00 -07:00
pci ALSA: hda: fix general protection fault in azx_runtime_idle 2021-11-10 22:48:31 +01:00
pcmcia ALSA: vx: Manage vx_core object with devres 2021-07-19 16:17:09 +02:00
ppc ALSA: ppc: fix error return code in snd_pmac_probe() 2021-06-16 08:52:29 +02:00
sh module: remove never implemented MODULE_SUPPORTED_DEVICE 2021-03-17 13:16:18 -07:00
soc ASoC: soc-pcm: Fix DPCM lockdep warning due to nested stream locks 2022-01-28 15:59:16 +00:00
sparc ALSA: sparc: Fix assignment in if condition 2021-06-09 17:30:29 +02:00
spi
synth ALSA: synth: missing check for possible NULL after the call to kstrdup 2021-11-09 07:18:50 +01:00
usb ALSA: usb-audio: Add quirk for Audient iD14 2021-11-02 17:19:26 +01:00
virtio ALSA: virtio: Replace zero-length array with flexible-array member 2021-09-30 13:47:57 +02:00
x86 ALSA: memalloc: Correctly name as WC 2021-08-04 08:07:58 +02:00
xen module: remove never implemented MODULE_SUPPORTED_DEVICE 2021-03-17 13:16:18 -07:00
ac97_bus.c
Kconfig
last.c
Makefile
sound_core.c