Takashi Iwai 2759caad26 ALSA: seq: oss: Avoid mutex lock for a long-time ioctl ... 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>		2020-09-23 14:45:14 +02:00
..
oss
seq	ALSA: seq: oss: Avoid mutex lock for a long-time ioctl	2020-09-23 14:45:14 +02:00
compress_offload.c	ALSA: compress_offload: remove redundant initialization	2020-09-03 09:26:27 +02:00
control.c	ALSA: ctl: Workaround for lockdep warning wrt card->ctl_files_rwlock	2020-09-22 11:07:10 +02:00
control_compat.c	ALSA: compat_ioctl: avoid compat_alloc_user_space	2020-09-21 10:37:07 +02:00
ctljack.c
device.c
hrtimer.c	ALSA: timer: Replace tasklet with work	2020-09-09 18:32:52 +02:00
hwdep.c	ALSA: compat_ioctl: avoid compat_alloc_user_space	2020-09-21 10:37:07 +02:00
hwdep_compat.c	ALSA: compat_ioctl: avoid compat_alloc_user_space	2020-09-21 10:37:07 +02:00
info.c
info_oss.c
init.c	ALSA: core: init: use DECLARE_COMPLETION_ONSTACK() macro	2020-09-03 09:26:38 +02:00
isadma.c
jack.c
Kconfig
Makefile
memalloc.c	ALSA: core: memalloc: fix fallthrough position	2020-09-03 09:24:49 +02:00
memory.c
misc.c
pcm.c	ALSA: core: pcm: simplify locking for timers	2020-09-03 09:24:33 +02:00
pcm_compat.c
pcm_dmaengine.c
pcm_drm_eld.c
pcm_iec958.c
pcm_lib.c
pcm_local.h
pcm_memory.c	ALSA: core: pcm_memory: dereference pointer after NULL checks	2020-09-03 09:24:58 +02:00
pcm_misc.c
pcm_native.c
pcm_param_trace.h
pcm_timer.c
pcm_trace.h
rawmidi.c	ALSA: rawmidi: (cosmetic) align function parameters	2020-09-03 09:27:44 +02:00
rawmidi_compat.c
seq_device.c
sgbuf.c
sound.c
sound_oss.c
timer.c	ALSA: timer: Replace tasklet with work	2020-09-09 18:32:52 +02:00
timer_compat.c
vmaster.c