MIPS: RB532: 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>
Cc: linux-mips@linux-mips.org
Cc: linux-gpio@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/11924/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

diff --git a/arch/mips/rb532/gpio.c b/arch/mips/rb532/gpio.c
index 650d5d39f34d902a60324cd9def8a48af228b994..fd1108543a71d0398097741a4afdf038c574545e 100644 (file)
--- a/arch/mips/rb532/gpio.c
+++ b/arch/mips/rb532/gpio.c
@@ -89,7 +89,7 @@ static int rb532_gpio_get(struct gpio_chip *chip, unsigned offset)
        struct rb532_gpio_chip  *gpch;
 
        gpch = container_of(chip, struct rb532_gpio_chip, chip);
-       return rb532_get_bit(offset, gpch->regbase + GPIOD);
+       return !!rb532_get_bit(offset, gpch->regbase + GPIOD);
 }
 
 /*