From: Takashi Iwai <tiwai@suse.de>
Date: Thu, 21 Apr 2016 15:37:54 +0000 (+0200)
Subject: ALSA: pcxhr: Fix missing mutex unlock
X-Git-Tag: v4.1.12-92~15^2~179
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=73f20d9324facbb11d030279f37a96fc7b21152d;p=users%2Fjedix%2Flinux-maple.git

ALSA: pcxhr: Fix missing mutex unlock

Orabug: 25227132

[ Upstream commit 67f3754b51f22b18c4820fb84062f658c30e8644 ]

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
Cc: <stable@vger.kernel.org> # 3.18+
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
(cherry picked from commit faaa136bc7a4ed96ffe9585b495ec8bfac0032a8)

Signed-off-by: Dhaval Giani <dhaval.giani@oracle.com>
---

diff --git a/sound/pci/pcxhr/pcxhr_core.c b/sound/pci/pcxhr/pcxhr_core.c
index c5194f5b150aa..d7e71f3092998 100644
--- 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, void *dev_id)
 	}
 
 	pcxhr_msg_thread(mgr);
+	mutex_unlock(&mgr->lock);
 	return IRQ_HANDLED;
 }