diff options
Diffstat (limited to 'drivers/gpio/gpiolib.c')
| -rw-r--r-- | drivers/gpio/gpiolib.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c index 67d771bae3..b83a27de7d 100644 --- a/drivers/gpio/gpiolib.c +++ b/drivers/gpio/gpiolib.c @@ -204,6 +204,10 @@ EXPORT_SYMBOL(gpio_set_value); void gpio_set_active(unsigned gpio, bool value) { struct gpio_info *gi = gpio_to_desc(gpio); + + if (!gi) + return; + gpio_set_value(gpio, gpio_adjust_value(gi, value)); } EXPORT_SYMBOL(gpio_set_active); @@ -229,6 +233,10 @@ EXPORT_SYMBOL(gpio_get_value); int gpio_is_active(unsigned gpio) { struct gpio_info *gi = gpio_to_desc(gpio); + + if (!gi) + return -ENODEV; + return gpio_adjust_value(gi, gpio_get_value(gpio)); } EXPORT_SYMBOL(gpio_is_active); @@ -255,6 +263,10 @@ EXPORT_SYMBOL(gpio_direction_output); int gpio_direction_active(unsigned gpio, bool value) { struct gpio_info *gi = gpio_to_desc(gpio); + + if (!gi) + return -ENODEV; + return gpio_direction_output(gpio, gpio_adjust_value(gi, value)); } EXPORT_SYMBOL(gpio_direction_active); |