netdevice: safe convert to netdev_priv() #part-2

We have some reasons to kill netdev->priv:
1. netdev->priv is equal to netdev_priv().
2. netdev_priv() wraps the calculation of netdev->priv's offset, obviously
   netdev_priv() is more flexible than netdev->priv.
But we cann't kill netdev->priv, because so many drivers reference to it
directly.

This patch is a safe convert for netdev->priv to netdev_priv(netdev).
Since all of the netdev->priv is only for read.
But it is too big to be sent in one mail.
I split it to 4 parts and make every part smaller than 100,000 bytes,
which is max size allowed by vger.

Signed-off-by: Wang Chen <wangchen@cn.fujitsu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/plip.c b/drivers/net/plip.c
index 2ea78e6..d544d4a 100644
--- a/drivers/net/plip.c
+++ b/drivers/net/plip.c
@@ -229,7 +229,7 @@
 	if (dev->irq != -1)
 	{
 		struct parport *port =
-		   ((struct net_local *)dev->priv)->pardev->port;
+		   ((struct net_local *)netdev_priv(dev))->pardev->port;
 		port->ops->enable_irq (port);
 	}
 }
@@ -239,7 +239,7 @@
 	if (dev->irq != -1)
 	{
 		struct parport *port =
-		   ((struct net_local *)dev->priv)->pardev->port;
+		   ((struct net_local *)netdev_priv(dev))->pardev->port;
 		port->ops->disable_irq (port);
 	}
 }
@@ -247,7 +247,7 @@
 static inline void write_data (struct net_device *dev, unsigned char data)
 {
 	struct parport *port =
-	   ((struct net_local *)dev->priv)->pardev->port;
+	   ((struct net_local *)netdev_priv(dev))->pardev->port;
 
 	port->ops->write_data (port, data);
 }
@@ -255,7 +255,7 @@
 static inline unsigned char read_status (struct net_device *dev)
 {
 	struct parport *port =
-	   ((struct net_local *)dev->priv)->pardev->port;
+	   ((struct net_local *)netdev_priv(dev))->pardev->port;
 
 	return port->ops->read_status (port);
 }