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authorLinus Walleij <linus.walleij@linaro.org>2015-12-22 14:40:02 (GMT)
committerRalf Baechle <ralf@linux-mips.org>2016-01-24 01:20:45 (GMT)
commit7b42c00a95c02d962b18f8ed8bf59b65ae58d3ee (patch)
tree463994d70c1d1672b349812484a172248a646099
parent6d7b14151d7510ed434f2e587cdae9eca82fc123 (diff)
downloadlinux-7b42c00a95c02d962b18f8ed8bf59b65ae58d3ee.tar.xz
MIPS: Alchemy: 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/11921/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
-rw-r--r--arch/mips/alchemy/common/gpiolib.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/arch/mips/alchemy/common/gpiolib.c b/arch/mips/alchemy/common/gpiolib.c
index f9bc4f5..84548f7 100644
--- a/arch/mips/alchemy/common/gpiolib.c
+++ b/arch/mips/alchemy/common/gpiolib.c
@@ -40,7 +40,7 @@
static int gpio2_get(struct gpio_chip *chip, unsigned offset)
{
- return alchemy_gpio2_get_value(offset + ALCHEMY_GPIO2_BASE);
+ return !!alchemy_gpio2_get_value(offset + ALCHEMY_GPIO2_BASE);
}
static void gpio2_set(struct gpio_chip *chip, unsigned offset, int value)
@@ -68,7 +68,7 @@ static int gpio2_to_irq(struct gpio_chip *chip, unsigned offset)
static int gpio1_get(struct gpio_chip *chip, unsigned offset)
{
- return alchemy_gpio1_get_value(offset + ALCHEMY_GPIO1_BASE);
+ return !!alchemy_gpio1_get_value(offset + ALCHEMY_GPIO1_BASE);
}
static void gpio1_set(struct gpio_chip *chip,
@@ -119,7 +119,7 @@ struct gpio_chip alchemy_gpio_chip[] = {
static int alchemy_gpic_get(struct gpio_chip *chip, unsigned int off)
{
- return au1300_gpio_get_value(off + AU1300_GPIO_BASE);
+ return !!au1300_gpio_get_value(off + AU1300_GPIO_BASE);
}
static void alchemy_gpic_set(struct gpio_chip *chip, unsigned int off, int v)