[PATCH 18/18] ASoC: SOF: ipc4-pcm: Do not run the trigger pipelines if no spipe is stored

[Peter Ujfalusi]

If the pipeline setup fails at the first widget/pipeline then we will have
no spipe stored under the pipeline_list->pipelines, the
pipeline_list->count is 0.

If this is the case we would have a NULL pointer dereference if the
execution is allowed to proceed.

Check for this condition along with the pipeline_list->pipelines check

Signed-off-by: Peter Ujfalusi <peter.ujfalusi at linux.intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart at linux.intel.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan at linux.intel.com>
---
 sound/soc/sof/ipc4-pcm.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sound/soc/sof/ipc4-pcm.c b/sound/soc/sof/ipc4-pcm.c
index 2d89d3708ed0..521090d4498d 100644
--- a/sound/soc/sof/ipc4-pcm.c
+++ b/sound/soc/sof/ipc4-pcm.c
@@ -213,7 +213,7 @@ static int sof_ipc4_trigger_pipelines(struct snd_soc_component *component,
 	pipeline_list = &spcm->stream[substream->stream].pipeline_list;
 
 	/* nothing to trigger if the list is empty */
-	if (!pipeline_list->pipelines)
+	if (!pipeline_list->pipelines || !pipeline_list->count)
 		return 0;
 
 	/* allocate memory for the pipeline data */
-- 
2.39.1