net: igb: Use is_multicast_ether_addr helper

Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/igb/e1000_mac.c

@@ -29,6 +29,7 @@
 #include <linux/delay.h>
 #include <linux/pci.h>
 #include <linux/netdevice.h>
+#include <linux/etherdevice.h>
 
 #include "e1000_mac.h"
 
@@ -217,7 +218,7 @@ s32 igb_check_alt_mac_addr(struct e1000_hw *hw)
 	}
 
 	/* if multicast bit is set, the alternate address will not be used */
-	if (alt_mac_addr[0] & 0x01) {
+	if (is_multicast_ether_addr(alt_mac_addr)) {
 		hw_dbg("Ignoring Alternate Mac Address with MC bit set\n");
 		goto out;
 	}