[ARM] S3C24XX: GPIO: Fix error returns from gpio functions
Several GPIO functions have been returning -1 to indicate
an error instead of returning a proper error code. Change
to return -EINVAL for invalid argument(s).
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
diff --git a/arch/arm/mach-s3c2400/gpio.c b/arch/arm/mach-s3c2400/gpio.c
index 81ebe2f..6c68e78 100644
--- a/arch/arm/mach-s3c2400/gpio.c
+++ b/arch/arm/mach-s3c2400/gpio.c
@@ -33,8 +33,8 @@
int s3c2400_gpio_getirq(unsigned int pin)
{
- if (pin < S3C2410_GPE(0) || pin > S3C2400_GPE7_EINT7)
- return -1; /* not valid interrupts */
+ if (pin < S3C2410_GPE(0) || pin > S3C2400_GPE(7))
+ return -EINVAL; /* not valid interrupts */
return (pin - S3C2410_GPE(0)) + IRQ_EINT0;
}
diff --git a/arch/arm/mach-s3c2410/gpio.c b/arch/arm/mach-s3c2410/gpio.c
index bf7fbfe..7974afc 100644
--- a/arch/arm/mach-s3c2410/gpio.c
+++ b/arch/arm/mach-s3c2410/gpio.c
@@ -40,7 +40,7 @@
unsigned long val;
if (pin < S3C2410_GPG(8) || pin > S3C2410_GPG(15))
- return -1;
+ return -EINVAL;
config &= 0xff;
diff --git a/arch/arm/plat-s3c24xx/gpio.c b/arch/arm/plat-s3c24xx/gpio.c
index ae0b9d6..95df059 100644
--- a/arch/arm/plat-s3c24xx/gpio.c
+++ b/arch/arm/plat-s3c24xx/gpio.c
@@ -184,10 +184,10 @@
int s3c2410_gpio_getirq(unsigned int pin)
{
if (pin < S3C2410_GPF(0) || pin > S3C2410_GPG(15))
- return -1; /* not valid interrupts */
+ return -EINVAL; /* not valid interrupts */
if (pin < S3C2410_GPG(0) && pin > S3C2410_GPF(7))
- return -1; /* not valid pin */
+ return -EINVAL; /* not valid pin */
if (pin < S3C2410_GPF(4))
return (pin - S3C2410_GPF(0)) + IRQ_EINT0;
