[PATCH 2/2] ASoC: Intel: avs: Disconnect substream if suspend or resume fails

[Cezary Rojewski <cezary.rojewski@intel.com>]

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>
---
 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..f95c530ffeb1 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) {
+					data->substream->runtime->status->state =
+						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) {
+					data->substream->runtime->status->state =
+						SNDRV_PCM_STATE_DISCONNECTED;
 					return ret;
+				}
 			}
 		}
 	}
-- 
2.25.1