Staging: batman-adv: stop persistent warnings if a device is deactivated.

Without this change we spam the kernel log on every packet received on
any other interface when an interface has been added, but is not yet
active, ie UP.
Signed-off-by: NSimon Wunderlich <siwu@hrz.tu-chemnitz.de>
Signed-off-by: NAndrew Lunn <andrew@lunn.ch>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

drivers/staging/batman-adv/routing.c

@@ -1177,12 +1177,8 @@ static int discard_one_packet(struct batman_if *batman_if,
 {
 	int result = -EAGAIN;
 
-	if (batman_if->if_active != IF_TO_BE_ACTIVATED) {
-		printk(KERN_WARNING
-		       "batman-adv:Could not read from deactivated interface %s!\n",
-		       batman_if->dev);
-	} else {
-		if (batman_if->raw_sock)
+	if ((batman_if->if_active == IF_TO_BE_ACTIVATED)
+		&& (batman_if->raw_sock)) {
 			result = receive_raw_packet(batman_if->raw_sock,
 						    packet_buff,
 						    PACKBUFF_SIZE);