From 48295fe932b3306c25ba6157db82f8f9938f2637 Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Mon, 21 Dec 2015 16:50:18 +0100 Subject: [PATCH] blackfin: gpio: Be sure to clamp return value As we want gpio_chip .get() calls to be able to return negative error codes and propagate to drivers, we need to go over all drivers and make sure their return values are clamped to [0,1]. We do this by using the ret = !!(val) design pattern. Cc: Steven Miao Cc: adi-buildroot-devel@lists.sourceforge.net Acked-by: Sonic Zhang Signed-off-by: Linus Walleij --- arch/blackfin/kernel/bfin_gpio.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/blackfin/kernel/bfin_gpio.c b/arch/blackfin/kernel/bfin_gpio.c index a017359..84baa62 100644 --- a/arch/blackfin/kernel/bfin_gpio.c +++ b/arch/blackfin/kernel/bfin_gpio.c @@ -1159,7 +1159,7 @@ static int bfin_gpiolib_direction_output(struct gpio_chip *chip, unsigned gpio, static int bfin_gpiolib_get_value(struct gpio_chip *chip, unsigned gpio) { - return bfin_gpio_get_value(gpio); + return !!bfin_gpio_get_value(gpio); } static void bfin_gpiolib_set_value(struct gpio_chip *chip, unsigned gpio, int value) -- 2.7.4