diff options
Diffstat (limited to 'sound/core/pcm.c')
| -rw-r--r-- | sound/core/pcm.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/sound/core/pcm.c b/sound/core/pcm.c index f8ce961c28d6..3561cdceaadc 100644 --- a/sound/core/pcm.c +++ b/sound/core/pcm.c @@ -969,6 +969,8 @@ int snd_pcm_attach_substream(struct snd_pcm *pcm, int stream, init_waitqueue_head(&runtime->tsleep); runtime->status->state = SNDRV_PCM_STATE_OPEN; + mutex_init(&runtime->buffer_mutex); + atomic_set(&runtime->buffer_accessing, 0); substream->runtime = runtime; substream->private_data = pcm->private_data; @@ -1000,6 +1002,7 @@ void snd_pcm_detach_substream(struct snd_pcm_substream *substream) substream->runtime = NULL; if (substream->timer) spin_unlock_irq(&substream->timer->lock); + mutex_destroy(&runtime->buffer_mutex); kfree(runtime); put_pid(substream->pid); substream->pid = NULL; |