gpio: stp-xway: 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/20250625-gpiochip-set-rv-gpio-round2-v1-9-bc110a3b52ff@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>

diff --git a/drivers/gpio/gpio-stp-xway.c b/drivers/gpio/gpio-stp-xway.c
index 5a6406d1f03aa75e82423f7c5740fdb3df42dd4b..fdda8de6ca366662aec1fccb475f0698fb478ef5 100644 (file)
--- a/drivers/gpio/gpio-stp-xway.c
+++ b/drivers/gpio/gpio-stp-xway.c
@@ -113,7 +113,7 @@ static int xway_stp_get(struct gpio_chip *gc, unsigned int gpio)
  *
  * Set the shadow value and call ltq_ebu_apply.
  */
-static void xway_stp_set(struct gpio_chip *gc, unsigned gpio, int val)
+static int xway_stp_set(struct gpio_chip *gc, unsigned int gpio, int val)
 {
        struct xway_stp *chip = gpiochip_get_data(gc);
 
@@ -124,6 +124,8 @@ static void xway_stp_set(struct gpio_chip *gc, unsigned gpio, int val)
        xway_stp_w32(chip->virt, chip->shadow, XWAY_STP_CPU0);
        if (!chip->reserved)
                xway_stp_w32_mask(chip->virt, 0, XWAY_STP_CON_SWU, XWAY_STP_CON0);
+
+       return 0;
 }
 
 /**
@@ -136,9 +138,7 @@ static void xway_stp_set(struct gpio_chip *gc, unsigned gpio, int val)
  */
 static int xway_stp_dir_out(struct gpio_chip *gc, unsigned gpio, int val)
 {
-       xway_stp_set(gc, gpio, val);
-
-       return 0;
+       return xway_stp_set(gc, gpio, val);
 }
 
 /**
@@ -249,7 +249,7 @@ static int xway_stp_probe(struct platform_device *pdev)
        chip->gc.label = "stp-xway";
        chip->gc.direction_output = xway_stp_dir_out;
        chip->gc.get = xway_stp_get;
-       chip->gc.set = xway_stp_set;
+       chip->gc.set_rv = xway_stp_set;
        chip->gc.request = xway_stp_request;
        chip->gc.base = -1;
        chip->gc.owner = THIS_MODULE;