netdevice: safe convert to netdev_priv() #part-3

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/sunbmac.c b/drivers/net/sunbmac.c
index 3f57ba0..977b3e0 100644
--- a/drivers/net/sunbmac.c
+++ b/drivers/net/sunbmac.c
@@ -916,7 +916,7 @@
 
 static int bigmac_open(struct net_device *dev)
 {
-	struct bigmac *bp = (struct bigmac *) dev->priv;
+	struct bigmac *bp = netdev_priv(dev);
 	int ret;
 
 	ret = request_irq(dev->irq, &bigmac_interrupt, IRQF_SHARED, dev->name, bp);
@@ -933,7 +933,7 @@
 
 static int bigmac_close(struct net_device *dev)
 {
-	struct bigmac *bp = (struct bigmac *) dev->priv;
+	struct bigmac *bp = netdev_priv(dev);
 
 	del_timer(&bp->bigmac_timer);
 	bp->timer_state = asleep;
@@ -947,7 +947,7 @@
 
 static void bigmac_tx_timeout(struct net_device *dev)
 {
-	struct bigmac *bp = (struct bigmac *) dev->priv;
+	struct bigmac *bp = netdev_priv(dev);
 
 	bigmac_init_hw(bp, 0);
 	netif_wake_queue(dev);
@@ -956,7 +956,7 @@
 /* Put a packet on the wire. */
 static int bigmac_start_xmit(struct sk_buff *skb, struct net_device *dev)
 {
-	struct bigmac *bp = (struct bigmac *) dev->priv;
+	struct bigmac *bp = netdev_priv(dev);
 	int len, entry;
 	u32 mapping;
 
@@ -989,7 +989,7 @@
 
 static struct net_device_stats *bigmac_get_stats(struct net_device *dev)
 {
-	struct bigmac *bp = (struct bigmac *) dev->priv;
+	struct bigmac *bp = netdev_priv(dev);
 
 	bigmac_get_counters(bp, bp->bregs);
 	return &bp->enet_stats;
@@ -997,7 +997,7 @@
 
 static void bigmac_set_multicast(struct net_device *dev)
 {
-	struct bigmac *bp = (struct bigmac *) dev->priv;
+	struct bigmac *bp = netdev_priv(dev);
 	void __iomem *bregs = bp->bregs;
 	struct dev_mc_list *dmi = dev->mc_list;
 	char *addrs;
@@ -1060,7 +1060,7 @@
 
 static u32 bigmac_get_link(struct net_device *dev)
 {
-	struct bigmac *bp = dev->priv;
+	struct bigmac *bp = netdev_priv(dev);
 
 	spin_lock_irq(&bp->lock);
 	bp->sw_bmsr = bigmac_tcvr_read(bp, bp->tregs, BIGMAC_BMSR);