paulhsia 1da0c5d2dc ALSA: pcm: Fix stream lock usage in snd_pcm_period_elapsed()
[ Upstream commit f5cdc9d4003a2f66ea57b3edd3e04acc2b1a4439 ]

If the nullity check for `substream->runtime` is outside of the lock
region, it is possible to have a null runtime in the critical section
if snd_pcm_detach_substream is called right before the lock.

Signed-off-by: paulhsia <paulhsia@chromium.org>
Link: https://lore.kernel.org/r/20191112171715.128727-2-paulhsia@chromium.org
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2019-12-17 20:37:29 +01:00
..
2017-09-04 14:50:49 +02:00
2017-08-31 11:02:15 +02:00
2019-12-05 15:38:34 +01:00
2019-08-16 10:13:46 +02:00