[PATCH 1/3] Input: ad7879 - use new GPIO line value setter callbacks

[Bartosz Golaszewski]

From: Bartosz Golaszewski <bartosz.golaszewski@xxxxxxxxxx>

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@xxxxxxxxxx>
---
 drivers/input/touchscreen/ad7879.c | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/drivers/input/touchscreen/ad7879.c b/drivers/input/touchscreen/ad7879.c
index f661e199b63c..12fc39f9e784 100644
--- a/drivers/input/touchscreen/ad7879.c
+++ b/drivers/input/touchscreen/ad7879.c
@@ -444,10 +444,11 @@ static int ad7879_gpio_get_value(struct gpio_chip *chip, unsigned gpio)
 	return !!(val & AD7879_GPIO_DATA);
 }
 
-static void ad7879_gpio_set_value(struct gpio_chip *chip,
-				  unsigned gpio, int value)
+static int ad7879_gpio_set_value(struct gpio_chip *chip, unsigned int gpio,
+				 int value)
 {
 	struct ad7879 *ts = gpiochip_get_data(chip);
+	int ret;
 
 	mutex_lock(&ts->mutex);
 	if (value)
@@ -455,8 +456,10 @@ static void ad7879_gpio_set_value(struct gpio_chip *chip,
 	else
 		ts->cmd_crtl2 &= ~AD7879_GPIO_DATA;
 
-	ad7879_write(ts, AD7879_REG_CTRL2, ts->cmd_crtl2);
+	ret = ad7879_write(ts, AD7879_REG_CTRL2, ts->cmd_crtl2);
 	mutex_unlock(&ts->mutex);
+
+	return ret;
 }
 
 static int ad7879_gpio_add(struct ad7879 *ts)
@@ -472,7 +475,7 @@ static int ad7879_gpio_add(struct ad7879 *ts)
 	ts->gc.direction_input = ad7879_gpio_direction_input;
 	ts->gc.direction_output = ad7879_gpio_direction_output;
 	ts->gc.get = ad7879_gpio_get_value;
-	ts->gc.set = ad7879_gpio_set_value;
+	ts->gc.set_rv = ad7879_gpio_set_value;
 	ts->gc.can_sleep = 1;
 	ts->gc.base = -1;
 	ts->gc.ngpio = 1;

-- 
2.45.2