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ANDROID: GKI: ALSA: pcm: add locks for accessing runtime resource

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Add spin lock to resolve race conditions while
accessing substream runtime resource.

Change-Id: I8db743303ceb50205d62adfc02caf6ecab635d47
Signed-off-by: Karthikeyan Mani <kmani@codeaurora.org>
Bug: 151372815
(cherry picked from commit f5879f2128)
Signed-off-by: Saravana Kannan <saravanak@google.com>
This commit is contained in:
Karthikeyan Mani 2017-09-28 10:54:21 -07:00 committed by Saravana Kannan
parent 8898725bba
commit 8c62976a01
1 changed files with 1 additions and 0 deletions
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include/sound/pcm.h
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@ -476,6 +476,7 @@ struct snd_pcm_substream {
const struct snd_pcm_ops *ops;
/* -- runtime information -- */
struct snd_pcm_runtime *runtime;
spinlock_t runtime_lock;
/* -- timer section -- */
struct snd_timer *timer; /* timer */
unsigned timer_running: 1; /* time is running */