Linux-libre 4.3.2-gnu

1 files changed, 20 insertions, 4 deletions

diff --git a/drivers/gpio/gpio-rcar.c b/drivers/gpio/gpio-rcar.c
index 1e14a6c74..2a8122444 100644
--- a/drivers/gpio/gpio-rcar.c
+++ b/drivers/gpio/gpio-rcar.c
@@ -251,17 +251,32 @@ static void gpio_rcar_config_general_input_output_mode(struct gpio_chip *chip,
 
 static int gpio_rcar_request(struct gpio_chip *chip, unsigned offset)
 {
-	return pinctrl_request_gpio(chip->base + offset);
+	struct gpio_rcar_priv *p = gpio_to_priv(chip);
+	int error;
+
+	error = pm_runtime_get_sync(&p->pdev->dev);
+	if (error < 0)
+		return error;
+
+	error = pinctrl_request_gpio(chip->base + offset);
+	if (error)
+		pm_runtime_put(&p->pdev->dev);
+
+	return error;
 }
 
 static void gpio_rcar_free(struct gpio_chip *chip, unsigned offset)
 {
+	struct gpio_rcar_priv *p = gpio_to_priv(chip);
+
 	pinctrl_free_gpio(chip->base + offset);
 
 	/* Set the GPIO as an input to ensure that the next GPIO request won't
 	 * drive the GPIO pin as an output.
 	 */
 	gpio_rcar_config_general_input_output_mode(chip, offset, false);
+
+	pm_runtime_put(&p->pdev->dev);
 }
 
 static int gpio_rcar_direction_input(struct gpio_chip *chip, unsigned offset)
@@ -327,6 +342,10 @@ static const struct of_device_id gpio_rcar_of_table[] = {
 		.compatible = "renesas,gpio-r8a7794",
 		.data = &gpio_rcar_info_gen2,
 	}, {
+		.compatible = "renesas,gpio-r8a7795",
+		/* Gen3 GPIO is identical to Gen2. */
+		.data = &gpio_rcar_info_gen2,
+	}, {
 		.compatible = "renesas,gpio-rcar",
 		.data = &gpio_rcar_info_gen1,
 	}, {
@@ -405,7 +424,6 @@ static int gpio_rcar_probe(struct platform_device *pdev)
 	}
 
 	pm_runtime_enable(dev);
-	pm_runtime_get_sync(dev);
 
 	io = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	irq = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
@@ -487,7 +505,6 @@ static int gpio_rcar_probe(struct platform_device *pdev)
 err1:
 	gpiochip_remove(gpio_chip);
 err0:
-	pm_runtime_put(dev);
 	pm_runtime_disable(dev);
 	return ret;
 }
@@ -498,7 +515,6 @@ static int gpio_rcar_remove(struct platform_device *pdev)
 
 	gpiochip_remove(&p->gpio_chip);
 
-	pm_runtime_put(&pdev->dev);
 	pm_runtime_disable(&pdev->dev);
 	return 0;
 }