net: can: 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: Marc Kleine-Budde <mkl@pengutronix.de>
diff --git a/drivers/net/can/mscan/mpc5xxx_can.c b/drivers/net/can/mscan/mpc5xxx_can.c
index 668850e..5b0ee8e 100644
--- a/drivers/net/can/mscan/mpc5xxx_can.c
+++ b/drivers/net/can/mscan/mpc5xxx_can.c
@@ -302,7 +302,7 @@
 		goto exit_free_mscan;
 	}
 
-	dev_set_drvdata(&ofdev->dev, dev);
+	platform_set_drvdata(ofdev, dev);
 
 	dev_info(&ofdev->dev, "MSCAN at 0x%p, irq %d, clock %d Hz\n",
 		 priv->reg_base, dev->irq, priv->can.clock.freq);
@@ -321,11 +321,9 @@
 
 static int mpc5xxx_can_remove(struct platform_device *ofdev)
 {
-	struct net_device *dev = dev_get_drvdata(&ofdev->dev);
+	struct net_device *dev = platform_get_drvdata(ofdev);
 	struct mscan_priv *priv = netdev_priv(dev);
 
-	dev_set_drvdata(&ofdev->dev, NULL);
-
 	unregister_mscandev(dev);
 	iounmap(priv->reg_base);
 	irq_dispose_mapping(dev->irq);
@@ -338,7 +336,7 @@
 static struct mscan_regs saved_regs;
 static int mpc5xxx_can_suspend(struct platform_device *ofdev, pm_message_t state)
 {
-	struct net_device *dev = dev_get_drvdata(&ofdev->dev);
+	struct net_device *dev = platform_get_drvdata(ofdev);
 	struct mscan_priv *priv = netdev_priv(dev);
 	struct mscan_regs *regs = (struct mscan_regs *)priv->reg_base;
 
@@ -349,7 +347,7 @@
 
 static int mpc5xxx_can_resume(struct platform_device *ofdev)
 {
-	struct net_device *dev = dev_get_drvdata(&ofdev->dev);
+	struct net_device *dev = platform_get_drvdata(ofdev);
 	struct mscan_priv *priv = netdev_priv(dev);
 	struct mscan_regs *regs = (struct mscan_regs *)priv->reg_base;