[PATCH 1/1] ASoC: soc-compress: lock pcm_mutex to resolve lockdep error

[이경택 <gt82.lee@xxxxxxxxxxx>]

snd_soc_runtime_activate() and snd_soc_runtime_deactivate()

require pcm_mutex lock.

 

Signed-off-by: Gyeongtaek Lee <gt82.lee@xxxxxxxxxxx>

---

sound/soc/soc-compress.c | 4 ++++

1 file changed, 4 insertions(+)

 

diff --git a/sound/soc/soc-compress.c b/sound/soc/soc-compress.c

index 392a1c5b15d3..42d416ac7e9b 100644

--- a/sound/soc/soc-compress.c

+++ b/sound/soc/soc-compress.c

@@ -207,7 +207,9 @@ static int soc_compr_open_fe(struct snd_compr_stream
*cstream)

         fe->dpcm[stream].state = SND_SOC_DPCM_STATE_OPEN;

         fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO;

+         mutex_lock_nested(&fe->pcm_mutex, fe->pcm_subclass);

         snd_soc_runtime_activate(fe, stream);

+         mutex_unlock(&fe->pcm_mutex);

          mutex_unlock(&fe->card->mutex);

@@ -285,7 +287,9 @@ static int soc_compr_free_fe(struct snd_compr_stream
*cstream)

         else

                    stream = SNDRV_PCM_STREAM_CAPTURE;

+         mutex_lock_nested(&fe->pcm_mutex, fe->pcm_subclass);

         snd_soc_runtime_deactivate(fe, stream);

+         mutex_unlock(&fe->pcm_mutex);

          fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE;

-- 

2.21.0