From: Hans de Goede <hdegoede@redhat.com>
Date: Sun, 8 Apr 2012 15:59:48 +0000 (-0300)
Subject: [media] uvcvideo: Fix a "ignoring return value of ‘__clear_user’" warning
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=57fb4a4831793de9e8dbdfc8dc5eb8796026d47e;p=openwrt%2Fstaging%2Fblogic.git

[media] uvcvideo: Fix a "ignoring return value of ‘__clear_user’" warning

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
---

diff --git a/drivers/media/video/uvc/uvc_v4l2.c b/drivers/media/video/uvc/uvc_v4l2.c
index 111bfff1640d..4ef21e9cb28c 100644
--- a/drivers/media/video/uvc/uvc_v4l2.c
+++ b/drivers/media/video/uvc/uvc_v4l2.c
@@ -1097,7 +1097,8 @@ static int uvc_v4l2_put_xu_mapping(const struct uvc_xu_control_mapping *kp,
 	    __put_user(kp->menu_count, &up->menu_count))
 		return -EFAULT;
 
-	__clear_user(up->reserved, sizeof(up->reserved));
+	if (__clear_user(up->reserved, sizeof(up->reserved)))
+		return -EFAULT;
 
 	if (kp->menu_count == 0)
 		return 0;