Patch "ASoC: do not close shared backend dailink" has been added to the 4.12-stable tree

Patch "ASoC: do not close shared backend dailink" has been added to the 4.12-stable tree

[gregkh]

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

    ASoC: do not close shared backend dailink

to the 4.12-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-do-not-close-shared-backend-dailink.patch
and it can be found in the queue-4.12 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 b1cd2e34c69a2f3988786af451b6e17967c293a0 Mon Sep 17 00:00:00 2001
From: Banajit Goswami <bgoswami@codeaurora.org>
Date: Fri, 14 Jul 2017 23:15:05 -0700
Subject: ASoC: do not close shared backend dailink

From: Banajit Goswami <bgoswami@codeaurora.org>

commit b1cd2e34c69a2f3988786af451b6e17967c293a0 upstream.

Multiple frontend dailinks may be connected to a backend
dailink at the same time. When one of frontend dailinks is
closed, the associated backend dailink should not be closed
if it is connected to other active frontend dailinks. Change
ensures that backend dailink is closed only after all
connected frontend dailinks are closed.

Signed-off-by: Gopikrishnaiah Anandan <agopik@codeaurora.org>
Signed-off-by: Banajit Goswami <bgoswami@codeaurora.org>
Signed-off-by: Patrick Lai <plai@codeaurora.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 sound/soc/soc-pcm.c |    4 ++++
 1 file changed, 4 insertions(+)

--- a/sound/soc/soc-pcm.c
+++ b/sound/soc/soc-pcm.c
@@ -181,6 +181,10 @@ int dpcm_dapm_stream_event(struct snd_so
 		dev_dbg(be->dev, "ASoC: BE %s event %d dir %d\n",
 				be->dai_link->name, event, dir);
 
+		if ((event == SND_SOC_DAPM_STREAM_STOP) &&
+		    (be->dpcm[dir].users >= 1))
+			continue;
+
 		snd_soc_dapm_stream_event(be, dir, event);
 	}
 


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

queue-4.12/asoc-do-not-close-shared-backend-dailink.patch