Currently, the SND_SOC_DAPM_STREAM_START event is sent during pcm_prepare() but the SND_SOC_DAPM_STREAM_STOP event is sent only in dpcm_fe_dai_shutdown() after soc_pcm_close(). This results in an imbalance between when the DAPM widgets receive the PRE/POST_PMU/PMD events. So call snd_soc_dapm_stream_stop() in soc_pcm_hw_clean() before the snd_soc_pcm_component_hw_free() to keep the stream_stop DAPM event balanced with the stream_start event in soc_pm_prepare().

Also, in order to prevent duplicate DAPM stream events, remove the call for DAPM STREAM_START event in dpcm_fe_dai_prepare() and the call for DAPM STREAM_STOP event in dpcm_fe_dai_shutdown().

Reviewed-by: Bard Liao yung-chuan.liao@linux.intel.com Reviewed-by: Pierre-Louis Bossart pierre-louis.bossart@linux.intel.com Signed-off-by: Ranjani Sridharan ranjani.sridharan@linux.intel.com --- sound/soc/soc-pcm.c | 10 +++------- 1 file changed, 3 insertions(+), 7 deletions(-)

diff --git a/sound/soc/soc-pcm.c b/sound/soc/soc-pcm.c index aaab5cfe986b..5250124dc8f5 100644 --- a/sound/soc/soc-pcm.c +++ b/sound/soc/soc-pcm.c @@ -662,8 +662,6 @@ static int soc_pcm_clean(struct snd_pcm_substream *substream, int rollback)

soc_pcm_components_close(substream, rollback);

- if (!rollback) - snd_soc_dapm_stream_stop(rtd, substream->stream);

mutex_unlock(&rtd->card->pcm_mutex);

@@ -882,6 +880,9 @@ static int soc_pcm_hw_clean(struct snd_pcm_substream *substream, int rollback) snd_soc_dai_digital_mute(dai, 1, substream->stream); }

+ /* run the stream event */ + snd_soc_dapm_stream_stop(rtd, substream->stream); + /* free any machine hw params */ snd_soc_link_hw_free(substream, rollback);

@@ -1859,9 +1860,6 @@ static int dpcm_fe_dai_shutdown(struct snd_pcm_substream *substream) /* now shutdown the frontend */ soc_pcm_close(substream);

- /* run the stream event for each BE */ - dpcm_dapm_stream_event(fe, stream, SND_SOC_DAPM_STREAM_STOP); - fe->dpcm[stream].state = SND_SOC_DPCM_STATE_CLOSE; dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_NO); return 0; @@ -2363,8 +2361,6 @@ static int dpcm_fe_dai_prepare(struct snd_pcm_substream *substream) goto out; }

- /* run the stream event for each BE */ - dpcm_dapm_stream_event(fe, stream, SND_SOC_DAPM_STREAM_START); fe->dpcm[stream].state = SND_SOC_DPCM_STATE_PREPARE;

out: