gpio: imx: Fix return value on error

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>

diff --git a/drivers/gpio/mxc_gpio.c b/drivers/gpio/mxc_gpio.c
index 103786209cfa972b7b17f41285b3070bf04d696c..6efbb02c161931d970d415aaeb223a9e53dd8255 100644 (file)
--- 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;