From db30aaef313b4d5a2f6151e61e4f3ab5e0affae4 Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Mon, 21 Dec 2015 11:21:47 +0100 Subject: [PATCH] gpio: msic: 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. Acked-by: Mathias Nyman Signed-off-by: Linus Walleij --- drivers/gpio/gpio-msic.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpio/gpio-msic.c b/drivers/gpio/gpio-msic.c index fe9ef2bc..9a261ac 100644 --- a/drivers/gpio/gpio-msic.c +++ b/drivers/gpio/gpio-msic.c @@ -143,7 +143,7 @@ static int msic_gpio_get(struct gpio_chip *chip, unsigned offset) if (ret < 0) return ret; - return r & MSIC_GPIO_DIN_MASK; + return !!(r & MSIC_GPIO_DIN_MASK); } static void msic_gpio_set(struct gpio_chip *chip, unsigned offset, int value) -- 2.7.4