The operation of duplex streams should be in critical section.
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
{
struct snd_bebob *bebob = substream->private_data;
- if (substream->runtime->status->state != SNDRV_PCM_STATE_OPEN) {
- mutex_lock(&bebob->mutex);
+ mutex_lock(&bebob->mutex);
+
+ if (substream->runtime->status->state != SNDRV_PCM_STATE_OPEN)
bebob->substreams_counter--;
- mutex_unlock(&bebob->mutex);
- }
snd_bebob_stream_stop_duplex(bebob);
+ mutex_unlock(&bebob->mutex);
+
return snd_pcm_lib_free_vmalloc_buffer(substream);
}