[PATCH 12/12] gpio: ich: use new 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-ich.c | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/drivers/gpio/gpio-ich.c b/drivers/gpio/gpio-ich.c
index 0be9285efebc..67089b2423d8 100644
--- 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;

-- 
2.45.2