[PATCH 45/54] mfd: asic3: 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: Paul Parsons <lost.distance@xxxxxxxxx>
Cc: Lee Jones <lee.jones@xxxxxxxxxx>
Signed-off-by: Linus Walleij <linus.walleij@xxxxxxxxxx>
---
Lee: as mentioned in 00/54: either apply this directly
or ACK it and I will take it into the GPIO tree.
---
 drivers/mfd/asic3.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/mfd/asic3.c b/drivers/mfd/asic3.c
index a726f01e3b02..58c4d9cb8e8d 100644
--- a/drivers/mfd/asic3.c
+++ b/drivers/mfd/asic3.c
@@ -502,7 +502,8 @@ static int asic3_gpio_get(struct gpio_chip *chip,
 		return -EINVAL;
 	}
 
-	return asic3_read_register(asic, gpio_base + ASIC3_GPIO_STATUS) & mask;
+	return !!(asic3_read_register(asic, gpio_base + ASIC3_GPIO_STATUS)
+		  & mask));
 }
 
 static void asic3_gpio_set(struct gpio_chip *chip,
-- 
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