Re: [PATCH v4 06/12] ASoC: qcom: lpass-cpu: fix concurrency issue

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On 22/07/2020 11:31, Rohit kumar wrote:
i2sctl register value is set to 0 during hw_free(). This
impacts any ongoing concurrent session on the same i2s
port. As trigger() stop already resets enable bit to 0,
there is no need of explicit hw_free. Removing it to
fix the issue.

Fixes: 80beab8e1d86 ("ASoC: qcom: Add LPASS CPU DAI driver")
Signed-off-by: Rohit kumar <rohitkr@xxxxxxxxxxxxxx>

Reviewed-by: Srinivas Kandagatla <srinivas.kandagatla@xxxxxxxxxx>

---
  sound/soc/qcom/lpass-cpu.c | 16 ----------------
  1 file changed, 16 deletions(-)

diff --git a/sound/soc/qcom/lpass-cpu.c b/sound/soc/qcom/lpass-cpu.c
index 6b86f16..5d84f63 100644
--- a/sound/soc/qcom/lpass-cpu.c
+++ b/sound/soc/qcom/lpass-cpu.c
@@ -266,21 +266,6 @@ static int lpass_cpu_daiops_hw_params(struct snd_pcm_substream *substream,
  	return 0;
  }
-static int lpass_cpu_daiops_hw_free(struct snd_pcm_substream *substream,
-		struct snd_soc_dai *dai)
-{
-	struct lpass_data *drvdata = snd_soc_dai_get_drvdata(dai);
-	int ret;
-
-	ret = regmap_write(drvdata->lpaif_map,
-			   LPAIF_I2SCTL_REG(drvdata->variant, dai->driver->id),
-			   0);
-	if (ret)
-		dev_err(dai->dev, "error writing to i2sctl reg: %d\n", ret);
-
-	return ret;
-}
-
  static int lpass_cpu_daiops_prepare(struct snd_pcm_substream *substream,
  		struct snd_soc_dai *dai)
  {
@@ -350,7 +335,6 @@ const struct snd_soc_dai_ops asoc_qcom_lpass_cpu_dai_ops = {
  	.startup	= lpass_cpu_daiops_startup,
  	.shutdown	= lpass_cpu_daiops_shutdown,
  	.hw_params	= lpass_cpu_daiops_hw_params,
-	.hw_free	= lpass_cpu_daiops_hw_free,
  	.prepare	= lpass_cpu_daiops_prepare,
  	.trigger	= lpass_cpu_daiops_trigger,
  };




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