gpio: use dev_get_platdata()

Use the wrapper function for retrieving the platform data instead of
accessing dev->platform_data directly.

Signed-off-by: Nizam Haider <nijamh@cdac.in>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
diff --git a/drivers/gpio/gpio-ath79.c b/drivers/gpio/gpio-ath79.c
index b141022..e7e38af 100644
--- a/drivers/gpio/gpio-ath79.c
+++ b/drivers/gpio/gpio-ath79.c
@@ -138,7 +138,7 @@
 
 static int ath79_gpio_probe(struct platform_device *pdev)
 {
-	struct ath79_gpio_platform_data *pdata = pdev->dev.platform_data;
+	struct ath79_gpio_platform_data *pdata = dev_get_platdata(&pdev->dev);
 	struct device_node *np = pdev->dev.of_node;
 	struct ath79_gpio_ctrl *ctrl;
 	struct resource *res;
diff --git a/drivers/gpio/gpio-davinci.c b/drivers/gpio/gpio-davinci.c
index cf31179..9fd32f7 100644
--- a/drivers/gpio/gpio-davinci.c
+++ b/drivers/gpio/gpio-davinci.c
@@ -149,7 +149,7 @@
 	u32 val;
 
 	if (!IS_ENABLED(CONFIG_OF) || !pdev->dev.of_node)
-		return pdev->dev.platform_data;
+		return dev_get_platdata(&pdev->dev);
 
 	pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
 	if (!pdata)
diff --git a/drivers/gpio/gpio-f7188x.c b/drivers/gpio/gpio-f7188x.c
index 1734e4f..2be7337 100644
--- a/drivers/gpio/gpio-f7188x.c
+++ b/drivers/gpio/gpio-f7188x.c
@@ -298,7 +298,7 @@
 {
 	int err;
 	int i;
-	struct f7188x_sio *sio = pdev->dev.platform_data;
+	struct f7188x_sio *sio = dev_get_platdata(&pdev->dev);
 	struct f7188x_gpio_data *data;
 
 	data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);
diff --git a/drivers/gpio/gpio-octeon.c b/drivers/gpio/gpio-octeon.c
index 3c66ce4..afbb241 100644
--- a/drivers/gpio/gpio-octeon.c
+++ b/drivers/gpio/gpio-octeon.c
@@ -128,7 +128,7 @@
 
 static int octeon_gpio_remove(struct platform_device *pdev)
 {
-	struct gpio_chip *chip = pdev->dev.platform_data;
+	struct gpio_chip *chip = dev_get_platdata(&pdev->dev);
 	gpiochip_remove(chip);
 	return 0;
 }
diff --git a/drivers/gpio/gpio-sch311x.c b/drivers/gpio/gpio-sch311x.c
index 3841398..b454792 100644
--- a/drivers/gpio/gpio-sch311x.c
+++ b/drivers/gpio/gpio-sch311x.c
@@ -229,7 +229,7 @@
 
 static int sch311x_gpio_probe(struct platform_device *pdev)
 {
-	struct sch311x_pdev_data *pdata = pdev->dev.platform_data;
+	struct sch311x_pdev_data *pdata = dev_get_platdata(&pdev->dev);
 	struct sch311x_gpio_priv *priv;
 	struct sch311x_gpio_block *block;
 	int err, i;
@@ -289,7 +289,7 @@
 
 static int sch311x_gpio_remove(struct platform_device *pdev)
 {
-	struct sch311x_pdev_data *pdata = pdev->dev.platform_data;
+	struct sch311x_pdev_data *pdata = dev_get_platdata(&pdev->dev);
 	struct sch311x_gpio_priv *priv = platform_get_drvdata(pdev);
 	int i;