[PATCH] gpio: rcar: reference device instead of platform device

[Vladimir Zapolskiy <vz@xxxxxxxxx>]

The change simplifies dereferences to the mediated struct device, also
it allows to limit the scope of the platform device usage to probe and
remove functions only.

Non-functional change.

Signed-off-by: Vladimir Zapolskiy <vz@xxxxxxxxx>
---
 drivers/gpio/gpio-rcar.c | 24 +++++++++++-------------
 1 file changed, 11 insertions(+), 13 deletions(-)

diff --git a/drivers/gpio/gpio-rcar.c b/drivers/gpio/gpio-rcar.c
index 1322f7e0cfde..068ce25ffd28 100644
--- a/drivers/gpio/gpio-rcar.c
+++ b/drivers/gpio/gpio-rcar.c
@@ -35,7 +35,7 @@ struct gpio_rcar_bank_info {
 struct gpio_rcar_priv {
 	void __iomem *base;
 	spinlock_t lock;
-	struct platform_device *pdev;
+	struct device *dev;
 	struct gpio_chip gpio_chip;
 	struct irq_chip irq_chip;
 	unsigned int irq_parent;
@@ -140,7 +140,7 @@ static int gpio_rcar_irq_set_type(struct irq_data *d, unsigned int type)
 	struct gpio_rcar_priv *p = gpiochip_get_data(gc);
 	unsigned int hwirq = irqd_to_hwirq(d);
 
-	dev_dbg(&p->pdev->dev, "sense irq = %d, type = %d\n", hwirq, type);
+	dev_dbg(p->dev, "sense irq = %d, type = %d\n", hwirq, type);
 
 	switch (type & IRQ_TYPE_SENSE_MASK) {
 	case IRQ_TYPE_LEVEL_HIGH:
@@ -180,8 +180,7 @@ static int gpio_rcar_irq_set_wake(struct irq_data *d, unsigned int on)
 	if (p->irq_parent) {
 		error = irq_set_irq_wake(p->irq_parent, on);
 		if (error) {
-			dev_dbg(&p->pdev->dev,
-				"irq %u doesn't support irq_set_wake\n",
+			dev_dbg(p->dev, "irq %u doesn't support irq_set_wake\n",
 				p->irq_parent);
 			p->irq_parent = 0;
 		}
@@ -244,13 +243,13 @@ static int gpio_rcar_request(struct gpio_chip *chip, unsigned offset)
 	struct gpio_rcar_priv *p = gpiochip_get_data(chip);
 	int error;
 
-	error = pm_runtime_get_sync(&p->pdev->dev);
+	error = pm_runtime_get_sync(p->dev);
 	if (error < 0)
 		return error;
 
 	error = pinctrl_gpio_request(chip->base + offset);
 	if (error)
-		pm_runtime_put(&p->pdev->dev);
+		pm_runtime_put(p->dev);
 
 	return error;
 }
@@ -267,7 +266,7 @@ static void gpio_rcar_free(struct gpio_chip *chip, unsigned offset)
 	 */
 	gpio_rcar_config_general_input_output_mode(chip, offset, false);
 
-	pm_runtime_put(&p->pdev->dev);
+	pm_runtime_put(p->dev);
 }
 
 static int gpio_rcar_get_direction(struct gpio_chip *chip, unsigned int offset)
@@ -398,21 +397,20 @@ MODULE_DEVICE_TABLE(of, gpio_rcar_of_table);
 
 static int gpio_rcar_parse_dt(struct gpio_rcar_priv *p, unsigned int *npins)
 {
-	struct device_node *np = p->pdev->dev.of_node;
+	struct device_node *np = p->dev->of_node;
 	const struct gpio_rcar_info *info;
 	struct of_phandle_args args;
 	int ret;
 
-	info = of_device_get_match_data(&p->pdev->dev);
+	info = of_device_get_match_data(p->dev);
 
 	ret = of_parse_phandle_with_fixed_args(np, "gpio-ranges", 3, 0, &args);
 	*npins = ret == 0 ? args.args[2] : RCAR_MAX_GPIO_PER_BANK;
 	p->has_both_edge_trigger = info->has_both_edge_trigger;
 
 	if (*npins == 0 || *npins > RCAR_MAX_GPIO_PER_BANK) {
-		dev_warn(&p->pdev->dev,
-			 "Invalid number of gpio lines %u, using %u\n", *npins,
-			 RCAR_MAX_GPIO_PER_BANK);
+		dev_warn(p->dev, "Invalid number of gpio lines %u, using %u\n",
+			 *npins, RCAR_MAX_GPIO_PER_BANK);
 		*npins = RCAR_MAX_GPIO_PER_BANK;
 	}
 
@@ -434,7 +432,7 @@ static int gpio_rcar_probe(struct platform_device *pdev)
 	if (!p)
 		return -ENOMEM;
 
-	p->pdev = pdev;
+	p->dev = dev;
 	spin_lock_init(&p->lock);
 
 	/* Get device configuration from DT node */
-- 
2.17.1