From 27ca226711d4bb438349fe0575660a60ad56b357 Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Mon, 21 Dec 2015 11:42:30 +0100 Subject: [PATCH] gpio: tc3589x: 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. Signed-off-by: Linus Walleij --- drivers/gpio/gpio-tc3589x.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpio/gpio-tc3589x.c b/drivers/gpio/gpio-tc3589x.c index 7c1537ed6dff..2896aef5aec4 100644 --- a/drivers/gpio/gpio-tc3589x.c +++ b/drivers/gpio/gpio-tc3589x.c @@ -51,7 +51,7 @@ static int tc3589x_gpio_get(struct gpio_chip *chip, unsigned offset) if (ret < 0) return ret; - return ret & mask; + return !!(ret & mask); } static void tc3589x_gpio_set(struct gpio_chip *chip, unsigned offset, int val) -- 2.39.5