gpio: adnp: use new line value setter callbacks

struct gpio_chip now has callbacks for setting line values that return
an integer, allowing to indicate failures. Convert the driver to using
them.

Link: https://lore.kernel.org/r/20250306-gpiochip-set-conversion-v2-2-a76e72e21425@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>

Author: Bartosz Golaszewski

drivers/gpio/gpio-adnp.c

@@ -80,7 +80,7 @@ static int adnp_gpio_get(struct gpio_chip *chip, unsigned offset)
 	return (value & BIT(pos)) ? 1 : 0;
 }
 
-static void __adnp_gpio_set(struct adnp *adnp, unsigned offset, int value)
+static int __adnp_gpio_set(struct adnp *adnp, unsigned int offset, int value)
 {
 	unsigned int reg = offset >> adnp->reg_shift;
 	unsigned int pos = offset & 7;
@@ -89,23 +89,23 @@ static void __adnp_gpio_set(struct adnp *adnp, unsigned offset, int value)
 
 	err = adnp_read(adnp, GPIO_PLR(adnp) + reg, &val);
 	if (err < 0)
-		return;
+		return err;
 
 	if (value)
 		val |= BIT(pos);
 	else
 		val &= ~BIT(pos);
 
-	adnp_write(adnp, GPIO_PLR(adnp) + reg, val);
+	return adnp_write(adnp, GPIO_PLR(adnp) + reg, val);
 }
 
-static void adnp_gpio_set(struct gpio_chip *chip, unsigned offset, int value)
+static int adnp_gpio_set(struct gpio_chip *chip, unsigned int offset, int value)
 {
 	struct adnp *adnp = gpiochip_get_data(chip);
 
 	guard(mutex)(&adnp->i2c_lock);
 
-	__adnp_gpio_set(adnp, offset, value);
+	return __adnp_gpio_set(adnp, offset, value);
 }
 
 static int adnp_gpio_direction_input(struct gpio_chip *chip, unsigned offset)
@@ -430,7 +430,7 @@ static int adnp_gpio_setup(struct adnp *adnp, unsigned int num_gpios,
 	chip->direction_input = adnp_gpio_direction_input;
 	chip->direction_output = adnp_gpio_direction_output;
 	chip->get = adnp_gpio_get;
-	chip->set = adnp_gpio_set;
+	chip->set_rv = adnp_gpio_set;
 	chip->can_sleep = true;
 
 	if (IS_ENABLED(CONFIG_DEBUG_FS))