drivers/video/backlight/lm3630a_bl.c: fix signedness bug in lm3630a_chip_init()
"rval" needs to be signed for the error handling to work. Signed-off-by: NDan Carpenter <dan.carpenter@oracle.com> Acked-by: NJingoo Han <jg1.han@samsung.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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