arm: mx6: add support for i.MX6ULL

[karo-tx-uboot.git] / drivers / gpio / gpio-uclass.c

diff --git a/drivers/gpio/gpio-uclass.c b/drivers/gpio/gpio-uclass.c
index 4efda311a49e81c8470a23d88f62a09b07f0f5bc..4cce11fe215f05b2cfbc1d55b5c4e020940b1ee6 100644 (file)
--- a/drivers/gpio/gpio-uclass.c
+++ b/drivers/gpio/gpio-uclass.c
@@ -250,8 +250,12 @@ int gpio_free(unsigned gpio)
 
 static int check_reserved(struct gpio_desc *desc, const char *func)
 {
-       struct gpio_dev_priv *uc_priv = dev_get_uclass_priv(desc->dev);
+       struct gpio_dev_priv *uc_priv;
+
+       if (!dm_gpio_is_valid(desc))
+               return -ENOENT;
 
+       uc_priv = dev_get_uclass_priv(desc->dev);
        if (!uc_priv->name[desc->offset]) {
                printf("%s: %s: error: gpio %s%d not reserved\n",
                       desc->dev->name, func,