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

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Date:   Tue, 23 Aug 2022 09:59:38 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org,
        Srinivasa Rao Mandadapu <quic_srivasam@...cinc.com>,
        Srinivas Kandagatla <srinivas.kandagatla@...aro.org>,
        Mark Brown <broonie@...nel.org>
Subject: [PATCH 5.19 077/365] ASoC: qdsp6: q6apm-dai: unprepare stream if its already prepared

From: Srinivas Kandagatla <srinivas.kandagatla@...aro.org>

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