[alsa-devel] [PATCH 3/6] ASoC: SOF: pcm: remove runtime PM calls during pcm open/close

[Pierre-Louis Bossart]

From: Ranjani Sridharan <ranjani.sridharan at linux.intel.com>

pm_runtime_get_sync()/pm_runtime_put_autosuspend() calls are
already invoked by the ASoC core in soc_pcm_open() and
soc_pcm_close(). So the SOF component driver does not need
to call them again.

Signed-off-by: Ranjani Sridharan <ranjani.sridharan at linux.intel.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart at linux.intel.com>
---
 sound/soc/sof/pcm.c | 29 ++---------------------------
 1 file changed, 2 insertions(+), 27 deletions(-)

diff --git a/sound/soc/sof/pcm.c b/sound/soc/sof/pcm.c
index 649968841dad..4f536c0de0a5 100644
--- a/sound/soc/sof/pcm.c
+++ b/sound/soc/sof/pcm.c
@@ -416,7 +416,6 @@ static int sof_pcm_open(struct snd_pcm_substream *substream)
 	struct snd_sof_pcm *spcm;
 	struct snd_soc_tplg_stream_caps *caps;
 	int ret;
-	int err;
 
 	/* nothing to do for BE */
 	if (rtd->dai_link->no_pcm)
@@ -434,14 +433,6 @@ static int sof_pcm_open(struct snd_pcm_substream *substream)
 
 	caps = &spcm->pcm.caps[substream->stream];
 
-	ret = pm_runtime_get_sync(sdev->dev);
-	if (ret < 0) {
-		dev_err(sdev->dev, "error: pcm open failed to resume %d\n",
-			ret);
-		pm_runtime_put_noidle(sdev->dev);
-		return ret;
-	}
-
 	/* set any runtime constraints based on topology */
 	snd_pcm_hw_constraint_step(substream->runtime, 0,
 				   SNDRV_PCM_HW_PARAM_BUFFER_BYTES,
@@ -485,17 +476,8 @@ static int sof_pcm_open(struct snd_pcm_substream *substream)
 	spcm->stream[substream->stream].substream = substream;
 
 	ret = snd_sof_pcm_platform_open(sdev, substream);
-	if (ret < 0) {
-		dev_err(sdev->dev, "error: pcm open failed %d\n",
-			ret);
-
-		pm_runtime_mark_last_busy(sdev->dev);
-
-		err = pm_runtime_put_autosuspend(sdev->dev);
-		if (err < 0)
-			dev_err(sdev->dev, "error: pcm close failed to idle %d\n",
-				err);
-	}
+	if (ret < 0)
+		dev_err(sdev->dev, "error: pcm open failed %d\n", ret);
 
 	return ret;
 }
@@ -530,13 +512,6 @@ static int sof_pcm_close(struct snd_pcm_substream *substream)
 		 */
 	}
 
-	pm_runtime_mark_last_busy(sdev->dev);
-
-	err = pm_runtime_put_autosuspend(sdev->dev);
-	if (err < 0)
-		dev_err(sdev->dev, "error: pcm close failed to idle %d\n",
-			err);
-
 	return 0;
 }
 
-- 
2.17.1