rt2x00: Shortcut link state updates when not operating as STA

Signed-off-by: NHelmut Schaa <helmut.schaa@googlemail.com>
Signed-off-by: NIvo van Doorn <IvDoorn@gmail.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

drivers/net/wireless/rt2x00/rt2x00link.c

@@ -235,6 +235,12 @@ void rt2x00link_update_stats(struct rt2x00_dev *rt2x00dev,
 	struct link_ant *ant = &rt2x00dev->link.ant;
 	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
 
+	/*
+	 * No need to update the stats for !=STA interfaces
+	 */
+	if (!rt2x00dev->intf_sta_count)
+		return;
+
 	/*
 	 * Frame was received successfully since non-succesfull
 	 * frames would have been dropped by the hardware.