Takashi Iwai bbd411d70b ALSA: seq: oss: Avoid mutex lock for a long-time ioctl ... [ Upstream commit 2759caad26 ] Recently we applied a fix to cover the whole OSS sequencer ioctls with the mutex for dealing with the possible races. This works fine in general, but in theory, this may lead to unexpectedly long stall if an ioctl like SNDCTL_SEQ_SYNC is issued and an event with the far future timestamp was queued. For fixing such a potential stall, this patch changes the mutex lock applied conditionally excluding such an ioctl command. Also, change the mutex_lock() with the interruptible version for user to allow escaping from the big-hammer mutex. Fixes: 80982c7e83 ("ALSA: seq: oss: Serialize ioctls") Suggested-by: Pavel Machek <pavel@ucw.cz> Link: https://lore.kernel.org/r/20200922083856.28572-1-tiwai@suse.de Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Sasha Levin <sashal@kernel.org>		2020-10-29 09:55:11 +01:00
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ac97
aoa
arm
atmel
core	ALSA: seq: oss: Avoid mutex lock for a long-time ioctl	2020-10-29 09:55:11 +01:00
drivers
firewire
hda
i2c
isa
mips
oss
parisc
pci
pcmcia
ppc
sh
soc	ASoC: qcom: lpass-cpu: fix concurrency issue	2020-10-29 09:55:06 +01:00
sparc
spi
synth
usb
x86
xen
ac97_bus.c
Kconfig
last.c
Makefile
sound_core.c