To improve performance and overall system stability, suspend/resume operations for ASoC cards always return success status and defer the actual work.
Because of that, if a substream fails to resume, userspace may still attempt to invoke commands on it as from their perspective the operation completed successfully. Set substream's state to DISCONNECTED to ensure no further commands are attempted.
Signed-off-by: Cezary Rojewski cezary.rojewski@intel.com ---
Changes in v2: - __snd_pcm_set_state() replaced direct assignments of PCM state
sound/soc/intel/avs/pcm.c | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-)
diff --git a/sound/soc/intel/avs/pcm.c b/sound/soc/intel/avs/pcm.c index ca624fbb5c0d..70442b5212c2 100644 --- a/sound/soc/intel/avs/pcm.c +++ b/sound/soc/intel/avs/pcm.c @@ -934,8 +934,11 @@ static int avs_component_pm_op(struct snd_soc_component *component, bool be, rtd = snd_pcm_substream_chip(data->substream); if (rtd->dai_link->no_pcm == be && !rtd->dai_link->ignore_suspend) { ret = op(dai, data); - if (ret < 0) + if (ret < 0) { + __snd_pcm_set_state(data->substream->runtime, + SNDRV_PCM_STATE_DISCONNECTED); return ret; + } } }
@@ -944,8 +947,11 @@ static int avs_component_pm_op(struct snd_soc_component *component, bool be, rtd = snd_pcm_substream_chip(data->substream); if (rtd->dai_link->no_pcm == be && !rtd->dai_link->ignore_suspend) { ret = op(dai, data); - if (ret < 0) + if (ret < 0) { + __snd_pcm_set_state(data->substream->runtime, + SNDRV_PCM_STATE_DISCONNECTED); return ret; + } } } }