This is a note to let you know that I've just added the patch titled
ASoC: qcom: lpass-cpu: fix concurrency issue
to the 5.9-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
asoc-qcom-lpass-cpu-fix-concurrency-issue.patch
and it can be found in the queue-5.9 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit fe3c016fe9157e6bbb2dc4532043b55f460bcfc7
Author: Rohit kumar <rohitkr@xxxxxxxxxxxxxx>
Date: Fri Aug 14 16:23:02 2020 +0530
ASoC: qcom: lpass-cpu: fix concurrency issue
[ Upstream commit 753a6e17942f6f425ca622e1610625998312ad89 ]
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>
Link: https://lore.kernel.org/r/1597402388-14112-7-git-send-email-rohitkr@xxxxxxxxxxxxxx
Signed-off-by: Mark Brown <broonie@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/sound/soc/qcom/lpass-cpu.c b/sound/soc/qcom/lpass-cpu.c
index e00a4af29c13f..f25da84f175ac 100644
--- a/sound/soc/qcom/lpass-cpu.c
+++ b/sound/soc/qcom/lpass-cpu.c
@@ -209,21 +209,6 @@ 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)
{
@@ -304,7 +289,6 @@ 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,
};
