The operation of duplex streams should be in critical section.
Signed-off-by: Takashi Sakamoto <o-takashi@xxxxxxxxxxxxx>
---
sound/firewire/bebob/bebob_pcm.c | 9 +++++----
1 file changed, 5 insertions(+), 4 deletions(-)
diff --git a/sound/firewire/bebob/bebob_pcm.c b/sound/firewire/bebob/bebob_pcm.c
index 530db7a7844c..e21de44deaa9 100644
--- a/sound/firewire/bebob/bebob_pcm.c
+++ b/sound/firewire/bebob/bebob_pcm.c
@@ -213,14 +213,15 @@ static int pcm_hw_free(struct snd_pcm_substream *substream)
{
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);
}
--
2.20.1
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