[PATCH 4.4 033/163] ALSA: pcxhr: Fix missing mutex unlock

From: Greg Kroah-Hartman
Date: Mon May 02 2016 - 20:16:47 EST

4.4-stable review patch. If anyone has any objections, please let me know.


From: Takashi Iwai <tiwai@xxxxxxx>

commit 67f3754b51f22b18c4820fb84062f658c30e8644 upstream.

The commit [9bef72bdb26e: ALSA: pcxhr: Use nonatomic PCM ops]
converted to non-atomic PCM ops, but shamelessly with an unbalanced
mutex locking, which leads to the hangup easily. Fix it.

Fixes: 9bef72bdb26e ('ALSA: pcxhr: Use nonatomic PCM ops')
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=116441
Signed-off-by: Takashi Iwai <tiwai@xxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

sound/pci/pcxhr/pcxhr_core.c | 1 +
1 file changed, 1 insertion(+)

--- a/sound/pci/pcxhr/pcxhr_core.c
+++ b/sound/pci/pcxhr/pcxhr_core.c
@@ -1341,5 +1341,6 @@ irqreturn_t pcxhr_threaded_irq(int irq,

+ mutex_unlock(&mgr->lock);