Add null check for supplied Audio Path PCM opsguppy_6.99.2guppy/6.99.26.99.2

This was not being checked, and resulted in kernel panic when null

Signed-off-by: Mark Farrugia <mark.farrugia@fiberdyne.com.au>

1 files changed, 6 insertions, 0 deletions

diff --git a/core.c b/core.c
index a733118..c758391 100644
--- a/core.c
+++ b/core.c
@@ -242,6 +242,12 @@ static struct snd_pcm *pcm_create(struct snd_avirt_stream *stream)
 		pcm_ops_ap = (struct snd_pcm_ops *)audiopath->pcm_capture_ops;
 		capture = true;
 	}
+	if (!pcm_ops_ap) {
+		D_ERRORK("No PCM ops for direction '%s' for Audio Path: %s",
+			 (stream->direction) ? "capture" : "playback",
+			 stream->map);
+		return ERR_PTR(-EFAULT);
+	}
 	pcm_ops = &pcm_ops_avirt;
 
 	/* Set PCM ops for the Audio Path*/