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 <mathias.nyman@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

diff --git a/drivers/gpio/gpio-msic.c b/drivers/gpio/gpio-msic.c
index fe9ef2bc981a984a440a5a15bd0b7eb0e195689e..9a261acb0eed19566bcd625e4fc5a93acdda79b9 100644 (file)
--- 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)