Patch "ASoC: dpcm: Avoid putting stream state to STOP when FE stream is paused" has been added to the 4.9-stable tree

Patch "ASoC: dpcm: Avoid putting stream state to STOP when FE stream is paused" has been added to the 4.9-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

    ASoC: dpcm: Avoid putting stream state to STOP when FE stream is paused

to the 4.9-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-dpcm-avoid-putting-stream-state-to-stop-when-fe-stream-is-paused.patch
and it can be found in the queue-4.9 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From foo@baz Fri Aug  4 15:30:10 PDT 2017
From: Patrick Lai <plai@codeaurora.org>
Date: Sat, 31 Dec 2016 22:44:39 -0800
Subject: ASoC: dpcm: Avoid putting stream state to STOP when FE stream is paused

From: Patrick Lai <plai@codeaurora.org>


[ Upstream commit 9f169b9f52a4afccdab7a7d2311b0c53a78a1e6b ]

When multiple front-ends are using the same back-end, putting state of a
front-end to STOP state upon receiving pause command will result in backend
stream getting released by DPCM framework unintentionally. In order to
avoid backend to be released when another active front-end stream is
present, put the stream state to PAUSED state instead of STOP state.

Signed-off-by: Patrick Lai <plai@codeaurora.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 sound/soc/soc-pcm.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

--- a/sound/soc/soc-pcm.c
+++ b/sound/soc/soc-pcm.c
@@ -2184,9 +2184,11 @@ static int dpcm_fe_dai_do_trigger(struct
 		break;
 	case SNDRV_PCM_TRIGGER_STOP:
 	case SNDRV_PCM_TRIGGER_SUSPEND:
-	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
 		fe->dpcm[stream].state = SND_SOC_DPCM_STATE_STOP;
 		break;
+	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
+		fe->dpcm[stream].state = SND_SOC_DPCM_STATE_PAUSED;
+		break;
 	}
 
 out:


Patches currently in stable-queue which might be from plai@codeaurora.org are

queue-4.9/asoc-dpcm-avoid-putting-stream-state-to-stop-when-fe-stream-is-paused.patch