[PATCH 3/4] pinctrl: intel: 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/pinctrl/intel/pinctrl-intel.c | 19 +++++++++++++------
 1 file changed, 13 insertions(+), 6 deletions(-)

diff --git a/drivers/pinctrl/intel/pinctrl-intel.c b/drivers/pinctrl/intel/pinctrl-intel.c
index d889c7c878e2d57eb075f4147a3eb2e2ae05ec5b..846b25ed1cc44cf9549aafc63192c80d8e66a797 100644
--- a/drivers/pinctrl/intel/pinctrl-intel.c
+++ b/drivers/pinctrl/intel/pinctrl-intel.c
@@ -1033,8 +1033,8 @@ static int intel_gpio_get(struct gpio_chip *chip, unsigned int offset)
 	return !!(padcfg0 & PADCFG0_GPIORXSTATE);
 }
 
-static void intel_gpio_set(struct gpio_chip *chip, unsigned int offset,
-			   int value)
+static int intel_gpio_set(struct gpio_chip *chip, unsigned int offset,
+			  int value)
 {
 	struct intel_pinctrl *pctrl = gpiochip_get_data(chip);
 	void __iomem *reg;
@@ -1043,11 +1043,11 @@ static void intel_gpio_set(struct gpio_chip *chip, unsigned int offset,
 
 	pin = intel_gpio_to_pin(pctrl, offset, NULL, NULL);
 	if (pin < 0)
-		return;
+		return -EINVAL;
 
 	reg = intel_get_padcfg(pctrl, pin, PADCFG0);
 	if (!reg)
-		return;
+		return -EINVAL;
 
 	guard(raw_spinlock_irqsave)(&pctrl->lock);
 
@@ -1057,6 +1057,8 @@ static void intel_gpio_set(struct gpio_chip *chip, unsigned int offset,
 	else
 		padcfg0 &= ~PADCFG0_GPIOTXSTATE;
 	writel(padcfg0, reg);
+
+	return 0;
 }
 
 static int intel_gpio_get_direction(struct gpio_chip *chip, unsigned int offset)
@@ -1094,7 +1096,12 @@ static int intel_gpio_direction_input(struct gpio_chip *chip, unsigned int offse
 static int intel_gpio_direction_output(struct gpio_chip *chip, unsigned int offset,
 				       int value)
 {
-	intel_gpio_set(chip, offset, value);
+	int ret;
+
+	ret = intel_gpio_set(chip, offset, value);
+	if (ret)
+		return ret;
+
 	return pinctrl_gpio_direction_output(chip, offset);
 }
 
@@ -1106,7 +1113,7 @@ static const struct gpio_chip intel_gpio_chip = {
 	.direction_input = intel_gpio_direction_input,
 	.direction_output = intel_gpio_direction_output,
 	.get = intel_gpio_get,
-	.set = intel_gpio_set,
+	.set_rv = intel_gpio_set,
 	.set_config = gpiochip_generic_config,
 };
 

-- 
2.48.1