[PATCH 04/12] gpio: tps68470: use new GPIO line value setter callbacks

[Bartosz Golaszewski <brgl@bgdev.pl>]

From: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>

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>
---
 drivers/gpio/gpio-tps68470.c | 14 +++++++++-----
 1 file changed, 9 insertions(+), 5 deletions(-)

diff --git a/drivers/gpio/gpio-tps68470.c b/drivers/gpio/gpio-tps68470.c
index 532deaddfd4e2e2f306f3872e746ad4d85925893..3b8805c854f7dbf4ae96fc06afaeb775bbdcacb1 100644
--- a/drivers/gpio/gpio-tps68470.c
+++ b/drivers/gpio/gpio-tps68470.c
@@ -70,8 +70,8 @@ static int tps68470_gpio_get_direction(struct gpio_chip *gc,
 						    GPIO_LINE_DIRECTION_IN;
 }
 
-static void tps68470_gpio_set(struct gpio_chip *gc, unsigned int offset,
-				int value)
+static int tps68470_gpio_set(struct gpio_chip *gc, unsigned int offset,
+			     int value)
 {
 	struct tps68470_gpio_data *tps68470_gpio = gpiochip_get_data(gc);
 	struct regmap *regmap = tps68470_gpio->tps68470_regmap;
@@ -82,7 +82,8 @@ static void tps68470_gpio_set(struct gpio_chip *gc, unsigned int offset,
 		offset -= TPS68470_N_REGULAR_GPIO;
 	}
 
-	regmap_update_bits(regmap, reg, BIT(offset), value ? BIT(offset) : 0);
+	return regmap_update_bits(regmap, reg, BIT(offset),
+				  value ? BIT(offset) : 0);
 }
 
 static int tps68470_gpio_output(struct gpio_chip *gc, unsigned int offset,
@@ -90,9 +91,12 @@ static int tps68470_gpio_output(struct gpio_chip *gc, unsigned int offset,
 {
 	struct tps68470_gpio_data *tps68470_gpio = gpiochip_get_data(gc);
 	struct regmap *regmap = tps68470_gpio->tps68470_regmap;
+	int ret;
 
 	/* Set the initial value */
-	tps68470_gpio_set(gc, offset, value);
+	ret = tps68470_gpio_set(gc, offset, value);
+	if (ret)
+		return ret;
 
 	/* rest are always outputs */
 	if (offset >= TPS68470_N_REGULAR_GPIO)
@@ -138,7 +142,7 @@ static int tps68470_gpio_probe(struct platform_device *pdev)
 	tps68470_gpio->gc.direction_output = tps68470_gpio_output;
 	tps68470_gpio->gc.get = tps68470_gpio_get;
 	tps68470_gpio->gc.get_direction = tps68470_gpio_get_direction;
-	tps68470_gpio->gc.set = tps68470_gpio_set;
+	tps68470_gpio->gc.set_rv = tps68470_gpio_set;
 	tps68470_gpio->gc.can_sleep = true;
 	tps68470_gpio->gc.names = tps68470_names;
 	tps68470_gpio->gc.ngpio = TPS68470_N_GPIO;

-- 
2.48.1