gpio: mm-lantiq: 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.

Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20250610-gpiochip-set-rv-gpio-v1-2-3a9a3c1472ff@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>

diff --git a/drivers/gpio/gpio-mm-lantiq.c b/drivers/gpio/gpio-mm-lantiq.c
index 14ae257834381186faba94446ea326cb3be99ca2..897a1e004681c085217bcf295bd971f3424011b1 100644 (file)
--- a/drivers/gpio/gpio-mm-lantiq.c
+++ b/drivers/gpio/gpio-mm-lantiq.c
@@ -55,9 +55,9 @@ static void ltq_mm_apply(struct ltq_mm *chip)
  * @gpio:   GPIO signal number.
  * @val:    Value to be written to specified signal.
  *
- * Set the shadow value and call ltq_mm_apply.
+ * Set the shadow value and call ltq_mm_apply. Always returns 0.
  */
-static void ltq_mm_set(struct gpio_chip *gc, unsigned offset, int value)
+static int ltq_mm_set(struct gpio_chip *gc, unsigned int offset, int value)
 {
        struct ltq_mm *chip = gpiochip_get_data(gc);
 
@@ -66,6 +66,8 @@ static void ltq_mm_set(struct gpio_chip *gc, unsigned offset, int value)
        else
                chip->shadow &= ~(1 << offset);
        ltq_mm_apply(chip);
+
+       return 0;
 }
 
 /**
@@ -78,9 +80,7 @@ static void ltq_mm_set(struct gpio_chip *gc, unsigned offset, int value)
  */
 static int ltq_mm_dir_out(struct gpio_chip *gc, unsigned offset, int value)
 {
-       ltq_mm_set(gc, offset, value);
-
-       return 0;
+       return ltq_mm_set(gc, offset, value);
 }
 
 /**
@@ -111,7 +111,7 @@ static int ltq_mm_probe(struct platform_device *pdev)
 
        chip->mmchip.gc.ngpio = 16;
        chip->mmchip.gc.direction_output = ltq_mm_dir_out;
-       chip->mmchip.gc.set = ltq_mm_set;
+       chip->mmchip.gc.set_rv = ltq_mm_set;
        chip->mmchip.save_regs = ltq_mm_save_regs;
 
        /* store the shadow value if one was passed by the devicetree */