[ 3.8.y.z extended stable ] Patch "ALSA: asihpi: 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

    ALSA: asihpi: 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 7cfae6311502f9a90352a787896ae0ad127e4663 Mon Sep 17 00:00:00 2001
From: Takashi Iwai <tiwai at suse.de>
Date: Thu, 11 Jul 2013 17:55:57 +0200
Subject: ALSA: asihpi: Fix unlocked snd_pcm_stop() call

commit 60478295d6876619f8f47f6d1a5c25eaade69ee3 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>
---
 sound/pci/asihpi/asihpi.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/sound/pci/asihpi/asihpi.c b/sound/pci/asihpi/asihpi.c
index 3536b07..005a1f1 100644
--- a/sound/pci/asihpi/asihpi.c
+++ b/sound/pci/asihpi/asihpi.c
@@ -769,7 +769,10 @@ static void snd_card_asihpi_timer_function(unsigned long data)
 						s->number);
 				ds->drained_count++;
 				if (ds->drained_count > 20) {
+					unsigned long flags;
+					snd_pcm_stream_lock_irqsave(s, flags);
 					snd_pcm_stop(s, SNDRV_PCM_STATE_XRUN);
+					snd_pcm_stream_unlock_irqrestore(s, flags);
 					continue;
 				}
 			} else {
--
1.8.1.2