netdevice: safe convert to netdev_priv() #part-4

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/net/atm/mpc.c b/net/atm/mpc.c
index 010b1d2..12e9ea37 100644
--- a/net/atm/mpc.c
+++ b/net/atm/mpc.c
@@ -785,7 +785,7 @@
 	}
 
 	if (mpc->dev) { /* check if the lec is LANE2 capable */
-		priv = (struct lec_priv *)mpc->dev->priv;
+		priv = netdev_priv(mpc->dev);
 		if (priv->lane_version < 2) {
 			dev_put(mpc->dev);
 			mpc->dev = NULL;
@@ -845,7 +845,7 @@
 
 	mpc->mpoad_vcc = NULL;
 	if (mpc->dev) {
-		struct lec_priv *priv = (struct lec_priv *)mpc->dev->priv;
+		struct lec_priv *priv = netdev_priv(mpc->dev);
 		priv->lane2_ops->associate_indicator = NULL;
 		stop_mpc(mpc);
 		dev_put(mpc->dev);
@@ -976,7 +976,7 @@
 
 	switch (event) {
 	case NETDEV_REGISTER:       /* a new lec device was allocated */
-		priv = (struct lec_priv *)dev->priv;
+		priv = netdev_priv(dev);
 		if (priv->lane_version < 2)
 			break;
 		priv->lane2_ops->associate_indicator = lane2_assoc_ind;
@@ -1324,7 +1324,7 @@
 	dprintk("\n");
 
 	if (mpc->dev) {
-		priv = (struct lec_priv *)mpc->dev->priv;
+		priv = netdev_priv(mpc->dev);
 		retval = priv->lane2_ops->associate_req(mpc->dev, mpc->dev->dev_addr, tlv, sizeof(tlv));
 		if (retval == 0)
 			printk("mpoa: (%s) MPOA device type TLV association failed\n", mpc->dev->name);
@@ -1474,7 +1474,7 @@
 		tmp = mpc->next;
 		if (mpc->dev != NULL) {
 			stop_mpc(mpc);
-			priv = (struct lec_priv *)mpc->dev->priv;
+			priv = netdev_priv(mpc->dev);
 			if (priv->lane2_ops != NULL)
 				priv->lane2_ops->associate_indicator = NULL;
 		}