ARM: scoop: 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: arm@kernel.org
Cc: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Olof Johansson <olof@lixom.net>
diff --git a/arch/arm/common/scoop.c b/arch/arm/common/scoop.c
index 45f4c21..e0df333 100644
--- a/arch/arm/common/scoop.c
+++ b/arch/arm/common/scoop.c
@@ -84,7 +84,7 @@
struct scoop_dev *sdev = container_of(chip, struct scoop_dev, gpio);
/* XXX: I'm unsure, but it seems so */
- return ioread16(sdev->base + SCOOP_GPRR) & (1 << (offset + 1));
+ return !!(ioread16(sdev->base + SCOOP_GPRR) & (1 << (offset + 1)));
}
static int scoop_gpio_direction_input(struct gpio_chip *chip,