mac80211: further cleanups to stopping BA sessions

Essentially consisting of passing the sta_info pointer around,
instead of repeatedly doing hash lookups.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/net/mac80211/ht.c b/net/mac80211/ht.c
index 1b503f3..82ea0b6 100644
--- a/net/mac80211/ht.c
+++ b/net/mac80211/ht.c
@@ -155,15 +155,12 @@
 
 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta)
 {
-	struct ieee80211_local *local = sta->local;
 	int i;
 
 	for (i = 0; i <  STA_TID_NUM; i++) {
-		ieee80211_stop_tx_ba_session(&local->hw, sta->sta.addr, i,
-					     WLAN_BACK_INITIATOR);
-		ieee80211_sta_stop_rx_ba_session(sta->sdata, sta->sta.addr, i,
-						 WLAN_BACK_RECIPIENT,
-						 WLAN_REASON_QSTA_LEAVE_QBSS);
+		__ieee80211_stop_tx_ba_session(sta, i, WLAN_BACK_INITIATOR);
+		__ieee80211_stop_rx_ba_session(sta, i, WLAN_BACK_RECIPIENT,
+					       WLAN_REASON_QSTA_LEAVE_QBSS);
 	}
 }