ASoC: qdsp6: q6apm-dai: unprepare stream if its already prepared

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@quicinc.com>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Link: https://lore.kernel.org/r/20220610144818.511797-1-srinivas.kandagatla@linaro.org
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/sound/soc/qcom/qdsp6/q6apm-dai.c b/sound/soc/qcom/qdsp6/q6apm-dai.c
index ee59ef36b85a614916f0a90fdbdc129ac59f0821..e45210c0e25e66e8b6eb045dbb51ba6448a8482a 100644 (file)
--- 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_soc_component *component,
                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 */