[ 3.5.y.z extended stable ] Patch "v4l2: added missing mutex.h include to v4l2-ctrls.h" has been added to staging queue

Luis Henriques luis.henriques at canonical.com
Fri Sep 20 19:35:24 UTC 2013

This is a note to let you know that I have just added a patch titled

    v4l2: added missing mutex.h include to v4l2-ctrls.h

to the linux-3.5.y-queue branch of the 3.5.y.z extended stable tree 
which can be found at:


If you, or anyone else, feels it should not be added to this tree, please 
reply to this email.

For more information about the 3.5.y.z tree, see



>From 123a1cb2628b6e323c499048aaa4c728fa9817db Mon Sep 17 00:00:00 2001
From: Andrzej Hajda <a.hajda at samsung.com>
Date: Fri, 28 Jun 2013 05:44:22 -0300
Subject: [PATCH] v4l2: added missing mutex.h include to v4l2-ctrls.h
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

commit a19dec6ea94c036af68c31930c1c92681f55af41 upstream.

This patch fixes following error:
include/media/v4l2-ctrls.h:193:15: error: field ‘_lock’ has incomplete type
include/media/v4l2-ctrls.h: In function ‘v4l2_ctrl_lock’:
include/media/v4l2-ctrls.h:570:2: error: implicit declaration of
	function ‘mutex_lock’ [-Werror=implicit-function-declaration]
include/media/v4l2-ctrls.h: In function ‘v4l2_ctrl_unlock’:
include/media/v4l2-ctrls.h:579:2: error: implicit declaration of
	function ‘mutex_unlock’ [-Werror=implicit-function-declaration]

Signed-off-by: Andrzej Hajda <a.hajda at samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park at samsung.com>
Signed-off-by: Hans Verkuil <hans.verkuil at cisco.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab at samsung.com>
Signed-off-by: Luis Henriques <luis.henriques at canonical.com>
 include/media/v4l2-ctrls.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/include/media/v4l2-ctrls.h b/include/media/v4l2-ctrls.h
index 776605f..9b08010 100644
--- a/include/media/v4l2-ctrls.h
+++ b/include/media/v4l2-ctrls.h
@@ -22,6 +22,7 @@
 #define _V4L2_CTRLS_H

 #include <linux/list.h>
+#include <linux/mutex.h>
 #include <linux/videodev2.h>

 /* forward references */

More information about the kernel-team mailing list