net: ethernet: use platform_{get,set}_drvdata()

Use the wrapper functions for getting and setting the driver data using
platform_device instead of using dev_{get,set}_drvdata() with &pdev->dev,
so we can directly pass a struct platform_device.

Also, unnecessary dev_set_drvdata() is removed, because the driver core
clears the driver data to NULL after device_release or on probe failure.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/ethernet/ibm/emac/rgmii.c b/drivers/net/ethernet/ibm/emac/rgmii.c
index 3925176..c47e23d 100644
--- a/drivers/net/ethernet/ibm/emac/rgmii.c
+++ b/drivers/net/ethernet/ibm/emac/rgmii.c
@@ -95,7 +95,7 @@
 
 int rgmii_attach(struct platform_device *ofdev, int input, int mode)
 {
-	struct rgmii_instance *dev = dev_get_drvdata(&ofdev->dev);
+	struct rgmii_instance *dev = platform_get_drvdata(ofdev);
 	struct rgmii_regs __iomem *p = dev->base;
 
 	RGMII_DBG(dev, "attach(%d)" NL, input);
@@ -124,7 +124,7 @@
 
 void rgmii_set_speed(struct platform_device *ofdev, int input, int speed)
 {
-	struct rgmii_instance *dev = dev_get_drvdata(&ofdev->dev);
+	struct rgmii_instance *dev = platform_get_drvdata(ofdev);
 	struct rgmii_regs __iomem *p = dev->base;
 	u32 ssr;
 
@@ -146,7 +146,7 @@
 
 void rgmii_get_mdio(struct platform_device *ofdev, int input)
 {
-	struct rgmii_instance *dev = dev_get_drvdata(&ofdev->dev);
+	struct rgmii_instance *dev = platform_get_drvdata(ofdev);
 	struct rgmii_regs __iomem *p = dev->base;
 	u32 fer;
 
@@ -167,7 +167,7 @@
 
 void rgmii_put_mdio(struct platform_device *ofdev, int input)
 {
-	struct rgmii_instance *dev = dev_get_drvdata(&ofdev->dev);
+	struct rgmii_instance *dev = platform_get_drvdata(ofdev);
 	struct rgmii_regs __iomem *p = dev->base;
 	u32 fer;
 
@@ -188,7 +188,7 @@
 
 void rgmii_detach(struct platform_device *ofdev, int input)
 {
-	struct rgmii_instance *dev = dev_get_drvdata(&ofdev->dev);
+	struct rgmii_instance *dev = platform_get_drvdata(ofdev);
 	struct rgmii_regs __iomem *p;
 
 	BUG_ON(!dev || dev->users == 0);
@@ -214,7 +214,7 @@
 
 void *rgmii_dump_regs(struct platform_device *ofdev, void *buf)
 {
-	struct rgmii_instance *dev = dev_get_drvdata(&ofdev->dev);
+	struct rgmii_instance *dev = platform_get_drvdata(ofdev);
 	struct emac_ethtool_regs_subhdr *hdr = buf;
 	struct rgmii_regs *regs = (struct rgmii_regs *)(hdr + 1);
 
@@ -279,7 +279,7 @@
 	       (dev->flags & EMAC_RGMII_FLAG_HAS_MDIO) ? "" : "out");
 
 	wmb();
-	dev_set_drvdata(&ofdev->dev, dev);
+	platform_set_drvdata(ofdev, dev);
 
 	return 0;
 
@@ -291,9 +291,7 @@
 
 static int rgmii_remove(struct platform_device *ofdev)
 {
-	struct rgmii_instance *dev = dev_get_drvdata(&ofdev->dev);
-
-	dev_set_drvdata(&ofdev->dev, NULL);
+	struct rgmii_instance *dev = platform_get_drvdata(ofdev);
 
 	WARN_ON(dev->users != 0);