We have set props.max_brightness before registering backlight device.
Signed-off-by: Axel Lin <axel.lin@gmail.com> Acked-by: Mike Frysinger <vapier@gentoo.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>