Author: Markus Elfring <elfring@users.sourceforge.net> The video_unregister_device() function tests whether its argument is NULL and then returns immediately. Thus the test around the call is not needed. This issue was detected by using the Coccinelle software. Signed-off-by: Markus Elfring Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab — drivers/media/usb/au0828/au0828-video.c | 8 ++—— 1 file changed, 2 insertions(+), …