carminefb: fix possible access beyond end of carmine_modedb[]

This check is off-by-one.

Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Cc: Sebastian Siewior <bigeasy@linutronix.de>
Cc: Krzysztof Helt <krzysztof.h1@poczta.fm>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/drivers/video/carminefb.c b/drivers/video/carminefb.c
index c7ff3c1..0c02f8e 100644 (file)
--- a/drivers/video/carminefb.c
+++ b/drivers/video/carminefb.c
@@ -562,7 +562,7 @@ static int __devinit alloc_carmine_fb(void __iomem *regs, void __iomem *smem_bas
        if (ret < 0)
                goto err_free_fb;
 
-       if (fb_mode > ARRAY_SIZE(carmine_modedb))
+       if (fb_mode >= ARRAY_SIZE(carmine_modedb))
                fb_mode = CARMINEFB_DEFAULT_VIDEO_MODE;
 
        par->cur_mode = par->new_mode = ~0;