diff --git a/include/net/mac80211.h b/include/net/mac80211.h
index e50c9e02889abd7a8dae5808c49225e7f6c27663..f3dbadafe16e1c7c06562ccb64d97e0251b964e2 100644
--- a/include/net/mac80211.h
+++ b/include/net/mac80211.h
@@ -4087,6 +4087,10 @@ void ieee80211_sta_pspoll(struct ieee80211_sta *sta);
  * This must be used in conjunction with ieee80211_sta_ps_transition()
  * and possibly ieee80211_sta_pspoll(); calls to all three must be
  * serialized.
+ * %IEEE80211_NUM_TIDS can be passed as the tid if the tid is unknown.
+ * In this case, mac80211 will not check that this tid maps to an AC
+ * that is trigger enabled and assume that the caller did the proper
+ * checks.
  */
 void ieee80211_sta_uapsd_trigger(struct ieee80211_sta *sta, u8 tid);
 
diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c
index fc08a50b3ebdef288457922d1d45b40d7d7be555..837d56261bb26c3466d157fe0c069604c41f8daa 100644
--- a/net/mac80211/rx.c
+++ b/net/mac80211/rx.c
@@ -1394,13 +1394,14 @@ void ieee80211_sta_uapsd_trigger(struct ieee80211_sta *pubsta, u8 tid)
 	u8 ac = ieee802_1d_to_ac[tid & 7];
 
 	/*
-	 * If this AC is not trigger-enabled do nothing.
+	 * If this AC is not trigger-enabled do nothing unless the
+	 * driver is calling us after it already checked.
 	 *
 	 * NB: This could/should check a separate bitmap of trigger-
 	 * enabled queues, but for now we only implement uAPSD w/o
 	 * TSPEC changes to the ACs, so they're always the same.
 	 */
-	if (!(sta->sta.uapsd_queues & BIT(ac)))
+	if (!(sta->sta.uapsd_queues & BIT(ac)) && tid != IEEE80211_NUM_TIDS)
 		return;
 
 	/* if we are in a service period, do nothing */