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authorTakashi Iwai <tiwai@suse.de>2013-07-11 17:58:47 +0200
committerTakashi Iwai <tiwai@suse.de>2013-07-15 21:25:13 +0200
commit5be1efb4c2ed79c3d7c0cbcbecae768377666e84 (patch)
tree2677223ca7d895629e751be4e09e3c42aee6c682 /sound/usb
parent9538aa46c2427d6782aa10036c4da4c541605e0e (diff)
downloadlinux-5be1efb4c2ed79c3d7c0cbcbecae768377666e84.tar.bz2
ALSA: usx2y: Fix unlocked snd_pcm_stop() call
snd_pcm_stop() must be called in the PCM substream lock context. Cc: <stable@vger.kernel.org> Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/usb')
-rw-r--r--sound/usb/usx2y/usbusx2yaudio.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/sound/usb/usx2y/usbusx2yaudio.c b/sound/usb/usx2y/usbusx2yaudio.c
index 4967fe9c938d..63fb5219f0f8 100644
--- a/sound/usb/usx2y/usbusx2yaudio.c
+++ b/sound/usb/usx2y/usbusx2yaudio.c
@@ -273,7 +273,11 @@ static void usX2Y_clients_stop(struct usX2Ydev *usX2Y)
struct snd_usX2Y_substream *subs = usX2Y->subs[s];
if (subs) {
if (atomic_read(&subs->state) >= state_PRERUNNING) {
+ unsigned long flags;
+
+ snd_pcm_stream_lock_irqsave(subs->pcm_substream, flags);
snd_pcm_stop(subs->pcm_substream, SNDRV_PCM_STATE_XRUN);
+ snd_pcm_stream_unlock_irqrestore(subs->pcm_substream, flags);
}
for (u = 0; u < NRURBS; u++) {
struct urb *urb = subs->urb[u];