netdev: Do not use TX lock to protect address lists.

Now that we have a specific lock to protect the network
device unicast and multicast lists, remove extraneous
grabs of the TX lock in cases where the code only needs
address list protection.

Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/core/dev.c b/net/core/dev.c
index ef1502d..9b49f74 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -2981,11 +2981,9 @@
 
 void dev_set_rx_mode(struct net_device *dev)
 {
-	netif_tx_lock_bh(dev);
-	netif_addr_lock(dev);
+	netif_addr_lock_bh(dev);
 	__dev_set_rx_mode(dev);
-	netif_addr_unlock(dev);
-	netif_tx_unlock_bh(dev);
+	netif_addr_unlock_bh(dev);
 }
 
 int __dev_addr_delete(struct dev_addr_list **list, int *count,
@@ -3063,13 +3061,11 @@
 
 	ASSERT_RTNL();
 
-	netif_tx_lock_bh(dev);
-	netif_addr_lock(dev);
+	netif_addr_lock_bh(dev);
 	err = __dev_addr_delete(&dev->uc_list, &dev->uc_count, addr, alen, 0);
 	if (!err)
 		__dev_set_rx_mode(dev);
-	netif_addr_unlock(dev);
-	netif_tx_unlock_bh(dev);
+	netif_addr_unlock_bh(dev);
 	return err;
 }
 EXPORT_SYMBOL(dev_unicast_delete);
@@ -3091,13 +3087,11 @@
 
 	ASSERT_RTNL();
 
-	netif_tx_lock_bh(dev);
-	netif_addr_lock(dev);
+	netif_addr_lock_bh(dev);
 	err = __dev_addr_add(&dev->uc_list, &dev->uc_count, addr, alen, 0);
 	if (!err)
 		__dev_set_rx_mode(dev);
-	netif_addr_unlock(dev);
-	netif_tx_unlock_bh(dev);
+	netif_addr_unlock_bh(dev);
 	return err;
 }
 EXPORT_SYMBOL(dev_unicast_add);
@@ -3164,14 +3158,12 @@
 {
 	int err = 0;
 
-	netif_tx_lock_bh(to);
-	netif_addr_lock(to);
+	netif_addr_lock_bh(to);
 	err = __dev_addr_sync(&to->uc_list, &to->uc_count,
 			      &from->uc_list, &from->uc_count);
 	if (!err)
 		__dev_set_rx_mode(to);
-	netif_addr_unlock(to);
-	netif_tx_unlock_bh(to);
+	netif_addr_unlock_bh(to);
 	return err;
 }
 EXPORT_SYMBOL(dev_unicast_sync);
@@ -3187,9 +3179,7 @@
  */
 void dev_unicast_unsync(struct net_device *to, struct net_device *from)
 {
-	netif_tx_lock_bh(from);
-	netif_addr_lock(from);
-	netif_tx_lock_bh(to);
+	netif_addr_lock_bh(from);
 	netif_addr_lock(to);
 
 	__dev_addr_unsync(&to->uc_list, &to->uc_count,
@@ -3197,9 +3187,7 @@
 	__dev_set_rx_mode(to);
 
 	netif_addr_unlock(to);
-	netif_tx_unlock_bh(to);
-	netif_addr_unlock(from);
-	netif_tx_unlock_bh(from);
+	netif_addr_unlock_bh(from);
 }
 EXPORT_SYMBOL(dev_unicast_unsync);
 
@@ -3219,8 +3207,7 @@
 
 static void dev_addr_discard(struct net_device *dev)
 {
-	netif_tx_lock_bh(dev);
-	netif_addr_lock(dev);
+	netif_addr_lock_bh(dev);
 
 	__dev_addr_discard(&dev->uc_list);
 	dev->uc_count = 0;
@@ -3228,8 +3215,7 @@
 	__dev_addr_discard(&dev->mc_list);
 	dev->mc_count = 0;
 
-	netif_addr_unlock(dev);
-	netif_tx_unlock_bh(dev);
+	netif_addr_unlock_bh(dev);
 }
 
 unsigned dev_get_flags(const struct net_device *dev)