diff options
Diffstat (limited to 'drivers/gpio')
| -rw-r--r-- | drivers/gpio/mxc_gpio.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/gpio/mxc_gpio.c b/drivers/gpio/mxc_gpio.c index 1037862..6efbb02 100644 --- a/drivers/gpio/mxc_gpio.c +++ b/drivers/gpio/mxc_gpio.c @@ -24,6 +24,7 @@ #include <asm/arch/imx-regs.h> #include <asm/io.h> #include <mxc_gpio.h> +#include <errno.h> /* GPIO port description */ static unsigned long gpio_ports[] = { @@ -47,7 +48,7 @@ int mxc_gpio_direction(unsigned int gpio, enum mxc_gpio_direction direction) u32 l; if (port >= ARRAY_SIZE(gpio_ports)) - return 1; + return -EINVAL; gpio &= 0x1f; @@ -95,7 +96,7 @@ int mxc_gpio_get(unsigned int gpio) u32 l; if (port >= ARRAY_SIZE(gpio_ports)) - return -1; + return -EINVAL; gpio &= 0x1f; |