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

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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>
This commit is contained in:
Axel Lin 2013-04-07 20:28:20 +08:00 committed by Linus Walleij
parent 97ddb1c88b
commit fdc7a9f85a
1 changed files with 1 additions and 1 deletions
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2
drivers/gpio/gpio-lpc32xx.c
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@ -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;