[MAC80211]: rx cleanups (2)

Some more outdenting to make the code more readable.
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Jiri Benc <jbenc@suse.cz>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

net/mac80211/rx.c

@@ -1387,7 +1387,22 @@ void __ieee80211_rx(struct ieee80211_hw *hw, struct sk_buff *skb,
 		if (!prepres)
 			continue;
 
-		if (prev) {
+		/*
+		 * frame is destined for this interface, but if it's not
+		 * also for the previous one we handle that after the
+		 * loop to avoid copying the SKB once too much
+		 */
+
+		if (!prev) {
+			prev = sdata;
+			continue;
+		}
+
+		/*
+		 * frame was destined for the previous interface
+		 * so invoke RX handlers for it
+		 */
+
 		skb_new = skb_copy(skb, GFP_ATOMIC);
 		if (!skb_new) {
 			if (net_ratelimit())
@@ -1401,7 +1416,6 @@ void __ieee80211_rx(struct ieee80211_hw *hw, struct sk_buff *skb,
 		rx.sdata = prev;
 		ieee80211_invoke_rx_handlers(local, local->rx_handlers,
 					     &rx, sta);
-		}
 		prev = sdata;
 	}
 	if (prev) {