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

Greg Kroah-Hartman
2016-05-03T00:16:44Z

From: Takashi Iwai <tiwai@suse.de>

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@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
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,
}

pcxhr_msg_thread(mgr);
+ mutex_unlock(&mgr->lock);
return IRQ_HANDLED;
}