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[3.5.y.z,extended,stable] Patch "ALSA: 6fire: Fix unlocked snd_pcm_stop() call" has been added to staging queue

Message ID 1374657119-11639-1-git-send-email-luis.henriques@canonical.com
State New
Headers show

Commit Message

Luis Henriques July 24, 2013, 9:11 a.m. UTC 
This is a note to let you know that I have just added a patch titled

    ALSA: 6fire: Fix unlocked snd_pcm_stop() call

to the linux-3.5.y-queue branch of the 3.5.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-3.5.y-queue

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

For more information about the 3.5.y.z tree, see
https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable

Thanks.
-Luis

------

From 21825751d0260bfbb372c9841f3cc415c99ef882 Mon Sep 17 00:00:00 2001
From: Takashi Iwai <tiwai@suse.de>
Date: Thu, 11 Jul 2013 17:57:55 +0200
Subject: [PATCH] ALSA: 6fire: Fix unlocked snd_pcm_stop() call

commit 5b9ab3f7324a1b94a5a5a76d44cf92dfeb3b5e80 upstream.

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

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Luis Henriques <luis.henriques@canonical.com>
---
 sound/usb/6fire/pcm.c | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

--
1.8.1.2
diff mbox

Patch

diff --git a/sound/usb/6fire/pcm.c b/sound/usb/6fire/pcm.c
index c97d05f..3143d9c 100644
--- a/sound/usb/6fire/pcm.c
+++ b/sound/usb/6fire/pcm.c
@@ -639,17 +639,25 @@  int __devinit usb6fire_pcm_init(struct sfire_chip *chip)
 void usb6fire_pcm_abort(struct sfire_chip *chip)
 {
 	struct pcm_runtime *rt = chip->pcm;
+	unsigned long flags;
 	int i;

 	if (rt) {
 		rt->panic = true;

-		if (rt->playback.instance)
+		if (rt->playback.instance) {
+			snd_pcm_stream_lock_irqsave(rt->playback.instance, flags);
 			snd_pcm_stop(rt->playback.instance,
 					SNDRV_PCM_STATE_XRUN);
-		if (rt->capture.instance)
+			snd_pcm_stream_unlock_irqrestore(rt->playback.instance, flags);
+		}
+
+		if (rt->capture.instance) {
+			snd_pcm_stream_lock_irqsave(rt->capture.instance, flags);
 			snd_pcm_stop(rt->capture.instance,
 					SNDRV_PCM_STATE_XRUN);
+			snd_pcm_stream_unlock_irqrestore(rt->capture.instance, flags);
+		}

 		for (i = 0; i < PCM_N_URBS; i++) {
 			usb_poison_urb(&rt->in_urbs[i].instance);