--- 5864eaa53cfca3224f3a0619610aba89892b3edc
+++ 0c349cece9514cba2e73f420f824f04875a5b6b9
@@ -1538,14 +1538,19 @@ bad_no_ah:
 
 void ath_set_hw_capab(struct ath_softc *sc, struct ieee80211_hw *hw)
 {
+	struct ath_hw *ah = sc->sc_ah;
+
 	hw->flags = IEEE80211_HW_RX_INCLUDES_FCS |
 		IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING |
 		IEEE80211_HW_SIGNAL_DBM |
-		IEEE80211_HW_AMPDU_AGGREGATION |
 		IEEE80211_HW_SUPPORTS_PS |
 		IEEE80211_HW_PS_NULLFUNC_STACK |
+		IEEE80211_HW_REPORTS_TX_ACK_STATUS |
 		IEEE80211_HW_SPECTRUM_MGMT;
 
+	if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_HT)
+		 hw->flags |= IEEE80211_HW_AMPDU_AGGREGATION;
+
 	if (AR_SREV_9160_10_OR_LATER(sc->sc_ah) || modparam_nohwcrypt)
 		hw->flags |= IEEE80211_HW_MFP_CAPABLE;
 
@@ -1555,7 +1560,10 @@ void ath_set_hw_capab(struct ath_softc *
 		BIT(NL80211_IFTYPE_ADHOC) |
 		BIT(NL80211_IFTYPE_MESH_POINT);
 
-	hw->wiphy->ps_default = false;
+	if (AR_SREV_5416(ah))
+		hw->wiphy->ps_default = false;
+	else
+		hw->wiphy->ps_default = true;
 
 	hw->queues = 4;
 	hw->max_rates = 4;
@@ -2305,6 +2313,19 @@ static void ath9k_remove_interface(struc
 	mutex_unlock(&sc->mutex);
 }
 
+void ath9k_enable_ps(struct ath_softc *sc)
+{
+	sc->ps_enabled = true;
+	if (!(sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_AUTOSLEEP)) {
+		if ((sc->imask & ATH9K_INT_TIM_TIMER) == 0) {
+			sc->imask |= ATH9K_INT_TIM_TIMER;
+			ath9k_hw_set_interrupts(sc->sc_ah,
+					sc->imask);
+		}
+	}
+	ath9k_hw_setrxabort(sc->sc_ah, 1);
+}
+
 static int ath9k_config(struct ieee80211_hw *hw, u32 changed)
 {
 	struct ath_wiphy *aphy = hw->priv;
@@ -2336,19 +2357,9 @@ static int ath9k_config(struct ieee80211
 	if (changed & IEEE80211_CONF_CHANGE_PS) {
 		if (conf->flags & IEEE80211_CONF_PS) {
 			sc->sc_flags |= SC_OP_PS_ENABLED;
-			if (!(ah->caps.hw_caps &
-			      ATH9K_HW_CAP_AUTOSLEEP)) {
-				if ((sc->imask & ATH9K_INT_TIM_TIMER) == 0) {
-					sc->imask |= ATH9K_INT_TIM_TIMER;
-					ath9k_hw_set_interrupts(sc->sc_ah,
-							sc->imask);
-				}
-			}
-			sc->ps_enabled = true;
 			if ((sc->sc_flags & SC_OP_NULLFUNC_COMPLETED)) {
 				sc->sc_flags &= ~SC_OP_NULLFUNC_COMPLETED;
-				sc->ps_enabled = true;
-				ath9k_hw_setrxabort(sc->sc_ah, 1);
+				ath9k_enable_ps(sc);
 			}
 		} else {
 			sc->ps_enabled = false;