[PATCH 37/54] mips: ar7/gpio: Be sure to clamp return value

[Linus Walleij <linus.walleij@xxxxxxxxxx>]

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: linux-mips@xxxxxxxxxxxxxx
Cc: Alban Bedel <albeu@xxxxxxx>
Cc: Ralf Baechle <ralf@xxxxxxxxxxxxxx>
Signed-off-by: Linus Walleij <linus.walleij@xxxxxxxxxx>
---
 arch/mips/ar7/gpio.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/mips/ar7/gpio.c b/arch/mips/ar7/gpio.c
index f4930456eb8e..f969f583c68c 100644
--- a/arch/mips/ar7/gpio.c
+++ b/arch/mips/ar7/gpio.c
@@ -37,7 +37,7 @@ static int ar7_gpio_get_value(struct gpio_chip *chip, unsigned gpio)
 				container_of(chip, struct ar7_gpio_chip, chip);
 	void __iomem *gpio_in = gpch->regs + AR7_GPIO_INPUT;
 
-	return readl(gpio_in) & (1 << gpio);
+	return !!(readl(gpio_in) & (1 << gpio));
 }
 
 static int titan_gpio_get_value(struct gpio_chip *chip, unsigned gpio)
-- 
2.4.3

--
To unsubscribe from this list: send the line "unsubscribe linux-gpio" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html