m68k: coldfire/gpio: 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.

Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Greg Ungerer <gerg@uclinux.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Greg Ungerer <gerg@uclinux.org>

diff --git a/arch/m68k/coldfire/gpio.c b/arch/m68k/coldfire/gpio.c
index e7e428681ec56b3c32866264cc95eba1df4ac099..37a83e27c7a6c8ea15c6c885ae71ca59c7c7ad8d 100644 (file)
--- a/arch/m68k/coldfire/gpio.c
+++ b/arch/m68k/coldfire/gpio.c
@@ -121,7 +121,7 @@ static int mcfgpio_direction_input(struct gpio_chip *chip, unsigned offset)
 
 static int mcfgpio_get_value(struct gpio_chip *chip, unsigned offset)
 {
-       return __mcfgpio_get_value(offset);
+       return !!__mcfgpio_get_value(offset);
 }
 
 static int mcfgpio_direction_output(struct gpio_chip *chip, unsigned offset,