linux-kernel - [ 14/30] media: rc: unlock on error in show

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Message-Id: <20130301194529.523122840@linuxfoundation.org>
Date:	Fri,  1 Mar 2013 11:45:35 -0800
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	stable@...r.kernel.org,
	"Herton R. Krzesinski" <herton.krzesinski@...onical.com>,
	Dan Carpenter <dan.carpenter@...cle.com>,
	Douglas Bagnall <douglas@...adise.net.nz>,
	Mauro Carvalho Chehab <mchehab@...hat.com>
Subject: [ 14/30] media: rc: unlock on error in show_protocols()

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

------------------

From: Dan Carpenter <dan.carpenter@...cle.com>

commit 30ebc5e44d057a1619ad63fe32c8c1670c37c4b8 upstream.

We recently introduced a new return -ENODEV in this function but we need
to unlock before returning.

[mchehab@...hat.com: found two patches with the same fix. Merged SOB's/acks into one patch]
Acked-by: Herton R. Krzesinski <herton.krzesinski@...onical.com>
Signed-off-by: Dan Carpenter <dan.carpenter@...cle.com>
Signed-off-by: Douglas Bagnall <douglas@...adise.net.nz>
Signed-off-by: Mauro Carvalho Chehab <mchehab@...hat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/media/rc/rc-main.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

--- a/drivers/media/rc/rc-main.c
+++ b/drivers/media/rc/rc-main.c
@@ -775,8 +775,10 @@ static ssize_t show_protocols(struct dev
 	} else if (dev->raw) {
 		enabled = dev->raw->enabled_protocols;
 		allowed = ir_raw_get_allowed_protocols();
-	} else
+	} else {
+		mutex_unlock(&dev->lock);
 		return -ENODEV;
+	}
 
 	IR_dprintk(1, "allowed - 0x%llx, enabled - 0x%llx\n",
 		   (long long)allowed,


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