diff --git a/net/mac80211/sta_info.c b/net/mac80211/sta_info.c
index 634f65c..4ba3c54 100644
--- a/net/mac80211/sta_info.c
+++ b/net/mac80211/sta_info.c
@@ -202,6 +202,18 @@
 		/* Make sure timer won't free the tid_rx struct, see below */
 		if (tid_rx)
 			tid_rx->shutdown = true;
+
+		/*
+		 * The stop callback cannot find this station any more, but
+		 * it didn't complete its work -- start the queue if necessary
+		 */
+		if (sta->ampdu_mlme.tid_state_tx[i] & HT_AGG_STATE_INITIATOR_MSK &&
+		    sta->ampdu_mlme.tid_state_tx[i] & HT_AGG_STATE_REQ_STOP_BA_MSK &&
+		    local->hw.ampdu_queues)
+			ieee80211_wake_queue_by_reason(&local->hw,
+				local->hw.queues + sta->tid_to_tx_q[i],
+				IEEE80211_QUEUE_STOP_REASON_AGGREGATION);
+
 		spin_unlock_bh(&sta->lock);
 
 		/*
@@ -275,8 +287,7 @@
 		 * enable session_timer's data differentiation. refer to
 		 * sta_rx_agg_session_timer_expired for useage */
 		sta->timer_to_tid[i] = i;
-		/* tid to tx queue: initialize according to HW (0 is valid) */
-		sta->tid_to_tx_q[i] = ieee80211_num_queues(&local->hw);
+		sta->tid_to_tx_q[i] = -1;
 		/* rx */
 		sta->ampdu_mlme.tid_state_rx[i] = HT_AGG_STATE_IDLE;
 		sta->ampdu_mlme.tid_rx[i] = NULL;