[ 3.8.y.z extended stable ] Patch "staging: line6: Fix unlocked snd_pcm_stop() call" has been added to staging queue

[Kamal Mostafa]

This is a note to let you know that I have just added a patch titled

    staging: line6: Fix unlocked snd_pcm_stop() call

to the linux-3.8.y-queue branch of the 3.8.y.z extended stable tree 
which can be found at:

 http://kernel.ubuntu.com/git?p=ubuntu/linux.git;a=shortlog;h=refs/heads/linux-3.8.y-queue

This patch is scheduled to be released in version 3.8.13.6.

If you, or anyone else, feels it should not be added to this tree, please 
reply to this email.

For more information about the 3.8.y.z tree, see
https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable

Thanks.
-Kamal

------

>From ede371a5aaef257dbdde18810c4a59d9bafaa29d Mon Sep 17 00:00:00 2001
From: Takashi Iwai <tiwai at suse.de>
Date: Thu, 11 Jul 2013 18:02:38 +0200
Subject: staging: line6: Fix unlocked snd_pcm_stop() call

commit 86f0b5b86d142b9323432fef078a6cf0fb5dda74 upstream.

snd_pcm_stop() must be called in the PCM substream lock context.

Signed-off-by: Takashi Iwai <tiwai at suse.de>
Signed-off-by: Kamal Mostafa <kamal at canonical.com>
---
 drivers/staging/line6/pcm.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/staging/line6/pcm.c b/drivers/staging/line6/pcm.c
index 6c1e313..fe6f536e 100644
--- a/drivers/staging/line6/pcm.c
+++ b/drivers/staging/line6/pcm.c
@@ -384,8 +384,11 @@ static int snd_line6_pcm_free(struct snd_device *device)
 */
 static void pcm_disconnect_substream(struct snd_pcm_substream *substream)
 {
-	if (substream->runtime && snd_pcm_running(substream))
+	if (substream->runtime && snd_pcm_running(substream)) {
+		snd_pcm_stream_lock_irq(substream);
 		snd_pcm_stop(substream, SNDRV_PCM_STATE_DISCONNECTED);
+		snd_pcm_stream_unlock_irq(substream);
+	}
 }

 /*
--
1.8.1.2