gpio: pca9570: 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.

Link: https://lore.kernel.org/r/20250619-gpiochip-set-rv-gpio-v2-1-74abf689fbd8@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>

diff --git a/drivers/gpio/gpio-pca9570.c b/drivers/gpio/gpio-pca9570.c
index d37ba404936835bca160822ee361604827976e9b..a33246f20fd838a57abeedbbd7e58259bf073a86 100644 (file)
--- a/drivers/gpio/gpio-pca9570.c
+++ b/drivers/gpio/gpio-pca9570.c
@@ -88,7 +88,7 @@ static int pca9570_get(struct gpio_chip *chip, unsigned offset)
        return !!(buffer & BIT(offset));
 }
 
-static void pca9570_set(struct gpio_chip *chip, unsigned offset, int value)
+static int pca9570_set(struct gpio_chip *chip, unsigned int offset, int value)
 {
        struct pca9570 *gpio = gpiochip_get_data(chip);
        u8 buffer;
@@ -110,6 +110,7 @@ static void pca9570_set(struct gpio_chip *chip, unsigned offset, int value)
 
 out:
        mutex_unlock(&gpio->lock);
+       return ret;
 }
 
 static int pca9570_probe(struct i2c_client *client)
@@ -125,7 +126,7 @@ static int pca9570_probe(struct i2c_client *client)
        gpio->chip.owner = THIS_MODULE;
        gpio->chip.get_direction = pca9570_get_direction;
        gpio->chip.get = pca9570_get;
-       gpio->chip.set = pca9570_set;
+       gpio->chip.set_rv = pca9570_set;
        gpio->chip.base = -1;
        gpio->chip_data = device_get_match_data(&client->dev);
        gpio->chip.ngpio = gpio->chip_data->ngpio;