diff --git a/drivers/net/wireless/ath/carl9170/main.c b/drivers/net/wireless/ath/carl9170/main.c
index f8ded84b7be8..ef5b6dc7b7f1 100644
--- a/drivers/net/wireless/ath/carl9170/main.c
+++ b/drivers/net/wireless/ath/carl9170/main.c
@@ -1430,18 +1430,10 @@ static int carl9170_op_ampdu_action(struct ieee80211_hw *hw,
 		if (!sta_info->ht_sta)
 			return -EOPNOTSUPP;
 
-		rcu_read_lock();
-		if (rcu_dereference(sta_info->agg[tid])) {
-			rcu_read_unlock();
-			return -EBUSY;
-		}
-
 		tid_info = kzalloc(sizeof(struct carl9170_sta_tid),
 				   GFP_ATOMIC);
-		if (!tid_info) {
-			rcu_read_unlock();
+		if (!tid_info)
 			return -ENOMEM;
-		}
 
 		tid_info->hsn = tid_info->bsn = tid_info->snx = (*ssn);
 		tid_info->state = CARL9170_TID_STATE_PROGRESS;
@@ -1460,7 +1452,6 @@ static int carl9170_op_ampdu_action(struct ieee80211_hw *hw,
 		list_add_tail_rcu(&tid_info->list, &ar->tx_ampdu_list);
 		rcu_assign_pointer(sta_info->agg[tid], tid_info);
 		spin_unlock_bh(&ar->tx_ampdu_list_lock);
-		rcu_read_unlock();
 
 		ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
 		break;