gpio: ich: 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.

Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Link: https://lore.kernel.org/r/20250407-gpiochip-set-rv-gpio-part1-v1-12-78399683ca38@linaro.org
Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>

diff --git a/drivers/gpio/gpio-ich.c b/drivers/gpio/gpio-ich.c
index 0be9285efebc778e9518d3ea3e8be3a166559c0e..67089b2423d8da72952a8437bb1462141e998ec9 100644 (file)
--- a/drivers/gpio/gpio-ich.c
+++ b/drivers/gpio/gpio-ich.c
@@ -175,12 +175,16 @@ static int ichx_gpio_direction_input(struct gpio_chip *gpio, unsigned int nr)
 static int ichx_gpio_direction_output(struct gpio_chip *gpio, unsigned int nr,
                                        int val)
 {
+       int ret;
+
        /* Disable blink hardware which is available for GPIOs from 0 to 31. */
        if (nr < 32 && ichx_priv.desc->have_blink)
                ichx_write_bit(GPO_BLINK, nr, 0, 0);
 
        /* Set GPIO output value. */
-       ichx_write_bit(GPIO_LVL, nr, val, 0);
+       ret = ichx_write_bit(GPIO_LVL, nr, val, 0);
+       if (ret)
+               return ret;
 
        /*
         * Try setting pin as an output and verify it worked since many pins
@@ -252,9 +256,9 @@ static int ich6_gpio_request(struct gpio_chip *chip, unsigned int nr)
        return ichx_gpio_request(chip, nr);
 }
 
-static void ichx_gpio_set(struct gpio_chip *chip, unsigned int nr, int val)
+static int ichx_gpio_set(struct gpio_chip *chip, unsigned int nr, int val)
 {
-       ichx_write_bit(GPIO_LVL, nr, val, 0);
+       return ichx_write_bit(GPIO_LVL, nr, val, 0);
 }
 
 static void ichx_gpiolib_setup(struct gpio_chip *chip)
@@ -269,7 +273,7 @@ static void ichx_gpiolib_setup(struct gpio_chip *chip)
        chip->get = ichx_priv.desc->get ?
                ichx_priv.desc->get : ichx_gpio_get;
 
-       chip->set = ichx_gpio_set;
+       chip->set_rv = ichx_gpio_set;
        chip->get_direction = ichx_gpio_get_direction;
        chip->direction_input = ichx_gpio_direction_input;
        chip->direction_output = ichx_gpio_direction_output;