From e1f458ac5376db84ac16e2fe397b91ae2397dedb Mon Sep 17 00:00:00 2001 From: Alexander Shiyan Date: Fri, 26 Apr 2013 20:41:07 +0400 Subject: ARM: at91 gpio: Fix possible null pointer dereference Signed-off-by: Alexander Shiyan Signed-off-by: Sascha Hauer --- arch/arm/mach-at91/gpio.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) (limited to 'arch/arm/mach-at91') diff --git a/arch/arm/mach-at91/gpio.c b/arch/arm/mach-at91/gpio.c index c2618c7b56..0e39a526d2 100644 --- a/arch/arm/mach-at91/gpio.c +++ b/arch/arm/mach-at91/gpio.c @@ -185,10 +185,10 @@ static struct at91_pinctrl_mux_ops at91sam9x5_ops = { int at91_mux_pin(unsigned pin, enum at91_mux mux, int use_pullup) { struct at91_gpio_chip *at91_gpio = pin_to_controller(pin); - void __iomem *pio = at91_gpio->regbase; + void __iomem *pio; + struct device_d *dev; unsigned mask = pin_to_mask(pin); int bank = pin_to_bank(pin); - struct device_d *dev = at91_gpio->chip.dev; if (!at91_gpio) return -EINVAL; @@ -197,6 +197,7 @@ int at91_mux_pin(unsigned pin, enum at91_mux mux, int use_pullup) if (!pio) return -EINVAL; + dev = at91_gpio->chip.dev; at91_mux_disable_interrupt(pio, mask); pin %= MAX_NB_GPIO_PER_BANK; -- cgit v1.2.3