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From:   Ravulapati Vishnu vardhan rao 
        <Vishnuvardhanrao.Ravulapati@amd.com>
CC:     <Alexander.Deucher@amd.com>, <broonie@kernel.org>,
        "Ravulapati Vishnu vardhan rao" <Vishnuvardhanrao.Ravulapati@amd.com>,
        Liam Girdwood <lgirdwood@gmail.com>,
        Jaroslav Kysela <perex@perex.cz>,
        Takashi Iwai <tiwai@suse.com>,
        Vijendar Mukunda <Vijendar.Mukunda@amd.com>,
        Colin Ian King <colin.king@canonical.com>,
        YueHaibing <yuehaibing@huawei.com>,
        "Kuninori Morimoto" <kuninori.morimoto.gx@renesas.com>,
        "moderated list:SOUND - SOC LAYER / DYNAMIC AUDIO POWER MANAGEM..." 
        <alsa-devel@alsa-project.org>,
        "open list" <linux-kernel@vger.kernel.org>
Subject: [PATCH] ASoC: amd: Fix for Subsequent Playback issue.
Date:   Tue, 21 Jan 2020 16:13:35 +0530
Message-ID: <1579603421-24571-1-git-send-email-Vishnuvardhanrao.Ravulapati@amd.com>
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If we play audio back to back, which kills one playback
and immediately start another, we can hear clicks.
This patch fixes the issue.

Signed-off-by: Ravulapati Vishnu vardhan rao <Vishnuvardhanrao.Ravulapati@amd.com>
---
 sound/soc/amd/raven/acp3x-pcm-dma.c | 17 ++++++++++-------
 1 file changed, 10 insertions(+), 7 deletions(-)

diff --git a/sound/soc/amd/raven/acp3x-pcm-dma.c b/sound/soc/amd/raven/acp3x-pcm-dma.c
index 5c3ec3c..916649a 100644
--- a/sound/soc/amd/raven/acp3x-pcm-dma.c
+++ b/sound/soc/amd/raven/acp3x-pcm-dma.c
@@ -344,25 +344,28 @@ static int acp3x_dma_close(struct snd_soc_component *component,
 {
 	struct snd_soc_pcm_runtime *prtd;
 	struct i2s_dev_data *adata;
+	struct i2s_stream_instance *rtd;
 
 	prtd = substream->private_data;
 	component = snd_soc_rtdcom_lookup(prtd, DRV_NAME);
 	adata = dev_get_drvdata(component->dev);
+	rtd = substream->runtime->private_data;
 
-	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
-		adata->play_stream = NULL;
-		adata->i2ssp_play_stream = NULL;
-	} else {
-		adata->capture_stream = NULL;
-		adata->i2ssp_capture_stream = NULL;
-	}
 
 	/* Disable ACP irq, when the current stream is being closed and
 	 * another stream is also not active.
 	 */
+	kfree(rtd);
 	if (!adata->play_stream && !adata->capture_stream &&
 		!adata->i2ssp_play_stream && !adata->i2ssp_capture_stream)
 		rv_writel(0, adata->acp3x_base + mmACP_EXTERNAL_INTR_ENB);
+	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
+		adata->play_stream = NULL;
+		adata->i2ssp_play_stream = NULL;
+	} else {
+		adata->capture_stream = NULL;
+		adata->i2ssp_capture_stream = NULL;
+	}
 	return 0;
 }
 
-- 
2.7.4