From: Randy Dunlap <rdunlap@xenotime.net>

Check driver layer return values in bttv.

Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
---

 drivers/media/video/bt8xx/bttv-driver.c |    2 ++
 1 file changed, 2 insertions(+)

diff -puN drivers/media/video/bt8xx/bttv-driver.c~bttv-must_check-fixes drivers/media/video/bt8xx/bttv-driver.c
--- a/drivers/media/video/bt8xx/bttv-driver.c~bttv-must_check-fixes
+++ a/drivers/media/video/bt8xx/bttv-driver.c
@@ -3909,6 +3909,8 @@ static void bttv_unregister_video(struct
 /* register video4linux devices */
 static int __devinit bttv_register_video(struct bttv *btv)
 {
+	int ret;
+
 	if (no_overlay <= 0) {
 		bttv_video_template.type |= VID_TYPE_OVERLAY;
 	} else {
_