[PATCH 05/19] gpio: winbond: use new GPIO line value setter callbacks

[Bartosz Golaszewski]

From: Bartosz Golaszewski <bartosz.golaszewski at 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 at linaro.org>
---
 drivers/gpio/gpio-winbond.c | 16 ++++++++++------
 1 file changed, 10 insertions(+), 6 deletions(-)

diff --git a/drivers/gpio/gpio-winbond.c b/drivers/gpio/gpio-winbond.c
index 4b61d975cc0ec27a3b0fc342a976b09bb14e0d28..421655b5d4c24d9ceda6d258f0a17f49c5215bc8 100644
--- a/drivers/gpio/gpio-winbond.c
+++ b/drivers/gpio/gpio-winbond.c
@@ -458,17 +458,19 @@ static int winbond_gpio_direction_out(struct gpio_chip *gc,
 	return 0;
 }
 
-static void winbond_gpio_set(struct gpio_chip *gc, unsigned int offset,
-			     int val)
+static int winbond_gpio_set(struct gpio_chip *gc, unsigned int offset,
+			    int val)
 {
 	unsigned long *base = gpiochip_get_data(gc);
 	const struct winbond_gpio_info *info;
+	int ret;
 
 	if (!winbond_gpio_get_info(&offset, &info))
-		return;
+		return -EACCES;
 
-	if (winbond_sio_enter(*base) != 0)
-		return;
+	ret = winbond_sio_enter(*base);
+	if (ret)
+		return ret;
 
 	winbond_sio_select_logical(*base, info->dev);
 
@@ -481,6 +483,8 @@ static void winbond_gpio_set(struct gpio_chip *gc, unsigned int offset,
 		winbond_sio_reg_bclear(*base, info->datareg, offset);
 
 	winbond_sio_leave(*base);
+
+	return 0;
 }
 
 static struct gpio_chip winbond_gpio_chip = {
@@ -490,7 +494,7 @@ static struct gpio_chip winbond_gpio_chip = {
 	.can_sleep		= true,
 	.get			= winbond_gpio_get,
 	.direction_input	= winbond_gpio_direction_in,
-	.set			= winbond_gpio_set,
+	.set_rv			= winbond_gpio_set,
 	.direction_output	= winbond_gpio_direction_out,
 };
 

-- 
2.48.1