pinctrl: coh901: 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>

diff --git a/drivers/pinctrl/pinctrl-coh901.c b/drivers/pinctrl/pinctrl-coh901.c
index e1cbf56df4b2b6383ed4314e3f0fcacca1cc8231..ca0fa79a286cd1a9f622d0c883fa0a2ad5ce9aa3 100644 (file)
--- a/drivers/pinctrl/pinctrl-coh901.c
+++ b/drivers/pinctrl/pinctrl-coh901.c
@@ -221,7 +221,7 @@ static int u300_gpio_get(struct gpio_chip *chip, unsigned offset)
 {
        struct u300_gpio *gpio = to_u300_gpio(chip);
 
-       return readl(U300_PIN_REG(offset, dir)) & U300_PIN_BIT(offset);
+       return !!(readl(U300_PIN_REG(offset, dir)) & U300_PIN_BIT(offset));
 }
 
 static void u300_gpio_set(struct gpio_chip *chip, unsigned offset, int value)