net/ieee802154/6lowpan.c: reuse eth_mac_addr()

Use eth_mac_addr() for .ndo_set_mac_address, remove
lowpan_set_address since it do currently the same as
eth_mac_addr(). Additional advantage: eth_mac_addr() already
checks if the given address is valid

Signed-off-by: Danny Kukawka <danny.kukawka@bisect.de>
Acked-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/ieee802154/6lowpan.c

@@ -55,6 +55,7 @@
 #include <linux/module.h>
 #include <linux/moduleparam.h>
 #include <linux/netdevice.h>
+#include <linux/etherdevice.h>
 #include <net/af_ieee802154.h>
 #include <net/ieee802154.h>
 #include <net/ieee802154_netdev.h>
@@ -924,19 +925,6 @@ drop:
 	return -EINVAL;
 }
 
-static int lowpan_set_address(struct net_device *dev, void *p)
-{
-	struct sockaddr *sa = p;
-
-	if (netif_running(dev))
-		return -EBUSY;
-
-	/* TODO: validate addr */
-	memcpy(dev->dev_addr, sa->sa_data, dev->addr_len);
-
-	return 0;
-}
-
 static int lowpan_get_mac_header_length(struct sk_buff *skb)
 {
 	/*
@@ -1062,7 +1050,7 @@ static struct header_ops lowpan_header_ops = {
 
 static const struct net_device_ops lowpan_netdev_ops = {
 	.ndo_start_xmit		= lowpan_xmit,
-	.ndo_set_mac_address	= lowpan_set_address,
+	.ndo_set_mac_address	= eth_mac_addr,
 };
 
 static void lowpan_setup(struct net_device *dev)