From: Linus Walleij Date: Mon, 21 Dec 2015 10:00:56 +0000 (+0100) Subject: gpio: intel-mid: Be sure to clamp return value X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=4c628f3de69f66f429c108b27de9f6e82311636c;p=linux-beck.git gpio: intel-mid: 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: David Cohen Signed-off-by: Linus Walleij --- diff --git a/drivers/gpio/gpio-intel-mid.c b/drivers/gpio/gpio-intel-mid.c index 1c46a7ef2680..26d2083a5901 100644 --- a/drivers/gpio/gpio-intel-mid.c +++ b/drivers/gpio/gpio-intel-mid.c @@ -120,7 +120,7 @@ static int intel_gpio_get(struct gpio_chip *chip, unsigned offset) { void __iomem *gplr = gpio_reg(chip, offset, GPLR); - return readl(gplr) & BIT(offset % 32); + return !!(readl(gplr) & BIT(offset % 32)); } static void intel_gpio_set(struct gpio_chip *chip, unsigned offset, int value)