gpio: lpc32xx: Fix off-by-one valid range checking for bank

The valid bank should be 0 ... ARRAY_SIZE(lpc32xx_gpiochip) - 1. Signed-off-by: Axel Lin <axel.lin@ingics.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
git-mirror · Apr 10, 2013 · fdc7a9f · fdc7a9f
1 parent 97ddb1c
commit fdc7a9f
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/drivers/gpio/gpio-lpc32xx.c b/drivers/gpio/gpio-lpc32xx.c
@@ -533,7 +533,7 @@ static int lpc32xx_of_xlate(struct gpio_chip *gc,
 {
 	/* Is this the correct bank? */
 	u32 bank = gpiospec->args[0];
-	if ((bank > ARRAY_SIZE(lpc32xx_gpiochip) ||
+	if ((bank >= ARRAY_SIZE(lpc32xx_gpiochip) ||
 	    (gc != &lpc32xx_gpiochip[bank].chip)))
 		return -EINVAL;