[PATCH 5.19 077/365] ASoC: qdsp6: q6apm-dai: unprepare stream if its already prepared

[Greg Kroah-Hartman]

From: Srinivas Kandagatla <srinivas.kandagatla@xxxxxxxxxx>

commit 6548c884a595391fab172faeae39e2b329b848f3 upstream.

prepare callback can be called multiple times, so unprepare the stream
if its already prepared.

Without this DSP is not happy to setting the params on a already
prepared graph.

Fixes: 9b4fe0f1cd79 ("ASoC: qdsp6: audioreach: add q6apm-dai support")
Reported-by: Srinivasa Rao Mandadapu <quic_srivasam@xxxxxxxxxxx>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20220610144818.511797-1-srinivas.kandagatla@xxxxxxxxxx
Signed-off-by: Mark Brown <broonie@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
 sound/soc/qcom/qdsp6/q6apm-dai.c |    6 ++++++
 1 file changed, 6 insertions(+)

--- a/sound/soc/qcom/qdsp6/q6apm-dai.c
+++ b/sound/soc/qcom/qdsp6/q6apm-dai.c
@@ -153,6 +153,12 @@ static int q6apm_dai_prepare(struct snd_
 		q6apm_unmap_memory_regions(prtd->graph, substream->stream);
 	}
 
+	if (prtd->state) {
+		/* clear the previous setup if any  */
+		q6apm_graph_stop(prtd->graph);
+		q6apm_unmap_memory_regions(prtd->graph, substream->stream);
+	}
+
 	prtd->pcm_count = snd_pcm_lib_period_bytes(substream);
 	prtd->pos = 0;
 	/* rate and channels are sent to audio driver */