ASoC: wm8903: 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 <linus.walleij@linaro.org>
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/sound/soc/codecs/wm8903.c b/sound/soc/codecs/wm8903.c
index e4cc41e6c23e333cbb771d6f1da91c19c5ff6079..2ed6419c181eab5cdcd6bc4b497c6b0226296cbe 100644 (file)
--- a/sound/soc/codecs/wm8903.c
+++ b/sound/soc/codecs/wm8903.c
@@ -1804,7 +1804,7 @@ static int wm8903_gpio_get(struct gpio_chip *chip, unsigned offset)
 
        regmap_read(wm8903->regmap, WM8903_GPIO_CONTROL_1 + offset, &reg);
 
-       return (reg & WM8903_GP1_LVL_MASK) >> WM8903_GP1_LVL_SHIFT;
+       return !!((reg & WM8903_GP1_LVL_MASK) >> WM8903_GP1_LVL_SHIFT);
 }
 
 static int wm8903_gpio_direction_out(struct gpio_chip *chip,