pinctrl: mediatek: airoha: use new GPIO 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.

Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Acked-by: Lorenzo Bianconi <lorenzo@kernel.org>
Link: https://lore.kernel.org/20250425-gpiochip-set-rv-pinctrl-mediatek-v1-1-93e6a01855e7@linaro.org
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

Author: Bartosz Golaszewski

drivers/pinctrl/mediatek/pinctrl-airoha.c

@@ -2266,15 +2266,16 @@ static int airoha_convert_pin_to_reg_offset(struct pinctrl_dev *pctrl_dev,
 }
 
 /* gpio callbacks */
-static void airoha_gpio_set(struct gpio_chip *chip, unsigned int gpio,
-			    int value)
+static int airoha_gpio_set(struct gpio_chip *chip, unsigned int gpio,
+			   int value)
 {
 	struct airoha_pinctrl *pinctrl = gpiochip_get_data(chip);
 	u32 offset = gpio % AIROHA_PIN_BANK_SIZE;
 	u8 index = gpio / AIROHA_PIN_BANK_SIZE;
 
-	regmap_update_bits(pinctrl->regmap, pinctrl->gpiochip.data[index],
-			   BIT(offset), value ? BIT(offset) : 0);
+	return regmap_update_bits(pinctrl->regmap,
+				  pinctrl->gpiochip.data[index],
+				  BIT(offset), value ? BIT(offset) : 0);
 }
 
 static int airoha_gpio_get(struct gpio_chip *chip, unsigned int gpio)
@@ -2299,9 +2300,7 @@ static int airoha_gpio_direction_output(struct gpio_chip *chip,
 	if (err)
 		return err;
 
-	airoha_gpio_set(chip, gpio, value);
-
-	return 0;
+	return airoha_gpio_set(chip, gpio, value);
 }
 
 /* irq callbacks */
@@ -2438,7 +2437,7 @@ static int airoha_pinctrl_add_gpiochip(struct airoha_pinctrl *pinctrl,
 	gc->free = gpiochip_generic_free;
 	gc->direction_input = pinctrl_gpio_direction_input;
 	gc->direction_output = airoha_gpio_direction_output;
-	gc->set = airoha_gpio_set;
+	gc->set_rv = airoha_gpio_set;
 	gc->get = airoha_gpio_get;
 	gc->base = -1;
 	gc->ngpio = AIROHA_NUM_PINS;
@@ -2734,9 +2733,7 @@ static int airoha_pinconf_set_pin_value(struct pinctrl_dev *pctrl_dev,
 	if (pin < 0)
 		return pin;
 
-	airoha_gpio_set(&pinctrl->gpiochip.chip, pin, value);
-
-	return 0;
+	return airoha_gpio_set(&pinctrl->gpiochip.chip, pin, value);
 }
 
 static int airoha_pinconf_set(struct pinctrl_dev *pctrl_dev,