Staging: batman-adv: fix own mac address detection

Earlier batman-adv versions would only create a batman_if struct after
a corresponding interface had been activated by a user. Now each
existing system interface has a batman_if struct and has to be checked
by verifying the IF_ACTIVE flag.
Signed-off-by: NMarek Lindner <lindner_marek@yahoo.de>
Signed-off-by: NSven Eckelmann <sven.eckelmann@gmx.de>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

drivers/staging/batman-adv/main.c

@@ -250,10 +250,13 @@ int choose_orig(void *data, int32_t size)
 int is_my_mac(uint8_t *addr)
 {
 	struct batman_if *batman_if;
+
 	rcu_read_lock();
 	list_for_each_entry_rcu(batman_if, &if_list, list) {
-		if ((batman_if->net_dev) &&
-		    (compare_orig(batman_if->net_dev->dev_addr, addr))) {
+		if (batman_if->if_status != IF_ACTIVE)
+			continue;
+
+		if (compare_orig(batman_if->net_dev->dev_addr, addr)) {
 			rcu_read_unlock();
 			return 1;
 		}