diff options
Diffstat (limited to 'drivers/gpio/gpiolib.c')
| -rw-r--r-- | drivers/gpio/gpiolib.c | 29 |
1 files changed, 15 insertions, 14 deletions
diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c index 6b4f94c3887f..7b2174b10219 100644 --- a/drivers/gpio/gpiolib.c +++ b/drivers/gpio/gpiolib.c @@ -279,20 +279,6 @@ struct gpio_device *gpiod_to_gpio_device(struct gpio_desc *desc) EXPORT_SYMBOL_GPL(gpiod_to_gpio_device); /** - * gpiod_is_equal() - Check if two GPIO descriptors refer to the same pin. - * @desc: Descriptor to compare. - * @other: The second descriptor to compare against. - * - * Returns: - * True if the descriptors refer to the same physical pin. False otherwise. - */ -bool gpiod_is_equal(const struct gpio_desc *desc, const struct gpio_desc *other) -{ - return desc == other; -} -EXPORT_SYMBOL_GPL(gpiod_is_equal); - -/** * gpio_device_get_base() - Get the base GPIO number allocated by this device * @gdev: GPIO device * @@ -400,6 +386,21 @@ static int validate_desc(const struct gpio_desc *desc, const char *func) return; \ } while (0) +/** + * gpiod_is_equal() - Check if two GPIO descriptors refer to the same pin. + * @desc: Descriptor to compare. + * @other: The second descriptor to compare against. + * + * Returns: + * True if the descriptors refer to the same physical pin. False otherwise. + */ +bool gpiod_is_equal(const struct gpio_desc *desc, const struct gpio_desc *other) +{ + return validate_desc(desc, __func__) > 0 && + !IS_ERR_OR_NULL(other) && desc == other; +} +EXPORT_SYMBOL_GPL(gpiod_is_equal); + static int gpiochip_get_direction(struct gpio_chip *gc, unsigned int offset) { int ret; |