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/drivers/net/wireless/libertas/main.c b/drivers/net/wireless/libertas/main.c
index 42e9b27..14d5d61 100644
--- a/drivers/net/wireless/libertas/main.c
+++ b/drivers/net/wireless/libertas/main.c
@@ -593,8 +593,7 @@
 	if ((dev->flags & (IFF_UP|IFF_MULTICAST)) != (IFF_UP|IFF_MULTICAST))
 		return nr_addrs;
 
-	netif_tx_lock_bh(dev);
-	netif_addr_lock(dev);
+	netif_addr_lock_bh(dev);
 	for (mc_list = dev->mc_list; mc_list; mc_list = mc_list->next) {
 		if (mac_in_list(cmd->maclist, nr_addrs, mc_list->dmi_addr)) {
 			lbs_deb_net("mcast address %s:%s skipped\n", dev->name,
@@ -609,8 +608,7 @@
 			    print_mac(mac, mc_list->dmi_addr));
 		i++;
 	}
-	netif_addr_unlock(dev);
-	netif_tx_unlock_bh(dev);
+	netif_addr_unlock_bh(dev);
 	if (mc_list)
 		return -EOVERFLOW;