gpio: use dev_get_platdata()

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

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
diff --git a/drivers/gpio/gpio-max732x.c b/drivers/gpio/gpio-max732x.c
index d4b51b1..91ad74d 100644
--- a/drivers/gpio/gpio-max732x.c
+++ b/drivers/gpio/gpio-max732x.c
@@ -453,7 +453,7 @@
 			     const struct i2c_device_id *id)
 {
 	struct i2c_client *client = chip->client;
-	struct max732x_platform_data *pdata = client->dev.platform_data;
+	struct max732x_platform_data *pdata = dev_get_platdata(&client->dev);
 	int has_irq = max732x_features[id->driver_data] >> 32;
 	int ret;
 
@@ -512,7 +512,7 @@
 			     const struct i2c_device_id *id)
 {
 	struct i2c_client *client = chip->client;
-	struct max732x_platform_data *pdata = client->dev.platform_data;
+	struct max732x_platform_data *pdata = dev_get_platdata(&client->dev);
 	int has_irq = max732x_features[id->driver_data] >> 32;
 
 	if (pdata->irq_base && has_irq != INT_NONE)
@@ -583,7 +583,7 @@
 	uint16_t addr_a, addr_b;
 	int ret, nr_port;
 
-	pdata = client->dev.platform_data;
+	pdata = dev_get_platdata(&client->dev);
 	if (pdata == NULL) {
 		dev_dbg(&client->dev, "no platform data\n");
 		return -EINVAL;
@@ -653,7 +653,7 @@
 
 static int max732x_remove(struct i2c_client *client)
 {
-	struct max732x_platform_data *pdata = client->dev.platform_data;
+	struct max732x_platform_data *pdata = dev_get_platdata(&client->dev);
 	struct max732x_chip *chip = i2c_get_clientdata(client);
 	int ret;