1 files changed, 279 insertions, 318 deletions

diff --git a/drivers/net/wireless/ath/ath9k/main.c b/drivers/net/wireless/ath/ath9k/main.c
index c0c3464d3a8..f90a6ca94a7 100644
--- a/drivers/net/wireless/ath/ath9k/main.c
+++ b/drivers/net/wireless/ath/ath9k/main.c
@@ -23,7 +23,7 @@ static void ath_update_txpow(struct ath_softc *sc)
 	struct ath_hw *ah = sc->sc_ah;
 
 	if (sc->curtxpow != sc->config.txpowlimit) {
-		ath9k_hw_set_txpowerlimit(ah, sc->config.txpowlimit);
+		ath9k_hw_set_txpowerlimit(ah, sc->config.txpowlimit, false);
 		/* read back in case value is clamped */
 		sc->curtxpow = ath9k_hw_regulatory(ah)->power_limit;
 	}
@@ -234,6 +234,8 @@ int ath_set_channel(struct ath_softc *sc, struct ieee80211_hw *hw,
 
 	ath9k_ps_wakeup(sc);
 
+	spin_lock_bh(&sc->sc_pcu_lock);
+
 	/*
 	 * This is only performed if the channel settings have
 	 * actually changed.
@@ -243,11 +245,9 @@ int ath_set_channel(struct ath_softc *sc, struct ieee80211_hw *hw,
 	 * hardware at the new frequency, and then re-enable
 	 * the relevant bits of the h/w.
 	 */
-	ath9k_hw_set_interrupts(ah, 0);
+	ath9k_hw_disable_interrupts(ah);
 	stopped = ath_drain_all_txq(sc, false);
 
-	spin_lock_bh(&sc->rx.pcu_lock);
-
 	if (!ath_stoprecv(sc))
 		stopped = false;
 
@@ -261,46 +261,39 @@ int ath_set_channel(struct ath_softc *sc, struct ieee80211_hw *hw,
 	if (!(sc->sc_flags & SC_OP_OFFCHANNEL))
 		caldata = &aphy->caldata;
 
-	ath_print(common, ATH_DBG_CONFIG,
-		  "(%u MHz) -> (%u MHz), conf_is_ht40: %d fastcc: %d\n",
-		  sc->sc_ah->curchan->channel,
-		  channel->center_freq, conf_is_ht40(conf),
-		  fastcc);
-
-	spin_lock_bh(&sc->sc_resetlock);
+	ath_dbg(common, ATH_DBG_CONFIG,
+		"(%u MHz) -> (%u MHz), conf_is_ht40: %d fastcc: %d\n",
+		sc->sc_ah->curchan->channel,
+		channel->center_freq, conf_is_ht40(conf),
+		fastcc);
 
 	r = ath9k_hw_reset(ah, hchan, caldata, fastcc);
 	if (r) {
-		ath_print(common, ATH_DBG_FATAL,
-			  "Unable to reset channel (%u MHz), "
-			  "reset status %d\n",
-			  channel->center_freq, r);
-		spin_unlock_bh(&sc->sc_resetlock);
-		spin_unlock_bh(&sc->rx.pcu_lock);
+		ath_err(common,
+			"Unable to reset channel (%u MHz), reset status %d\n",
+			channel->center_freq, r);
 		goto ps_restore;
 	}
-	spin_unlock_bh(&sc->sc_resetlock);
 
 	if (ath_startrecv(sc) != 0) {
-		ath_print(common, ATH_DBG_FATAL,
-			  "Unable to restart recv logic\n");
+		ath_err(common, "Unable to restart recv logic\n");
 		r = -EIO;
-		spin_unlock_bh(&sc->rx.pcu_lock);
 		goto ps_restore;
 	}
 
-	spin_unlock_bh(&sc->rx.pcu_lock);
-
 	ath_update_txpow(sc);
 	ath9k_hw_set_interrupts(ah, ah->imask);
 
 	if (!(sc->sc_flags & (SC_OP_OFFCHANNEL))) {
-		ath_beacon_config(sc, NULL);
+		if (sc->sc_flags & SC_OP_BEACONS)
+			ath_beacon_config(sc, NULL);
 		ieee80211_queue_delayed_work(sc->hw, &sc->tx_complete_work, 0);
 		ath_start_ani(common);
 	}
 
  ps_restore:
+	spin_unlock_bh(&sc->sc_pcu_lock);
+
 	ath9k_ps_restore(sc);
 	return r;
 }
@@ -328,6 +321,42 @@ static void ath_paprd_activate(struct ath_softc *sc)
 	ath9k_ps_restore(sc);
 }
 
+static bool ath_paprd_send_frame(struct ath_softc *sc, struct sk_buff *skb, int chain)
+{
+	struct ieee80211_hw *hw = sc->hw;
+	struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
+	struct ath_tx_control txctl;
+	int time_left;
+
+	memset(&txctl, 0, sizeof(txctl));
+	txctl.txq = sc->tx.txq_map[WME_AC_BE];
+
+	memset(tx_info, 0, sizeof(*tx_info));
+	tx_info->band = hw->conf.channel->band;
+	tx_info->flags |= IEEE80211_TX_CTL_NO_ACK;
+	tx_info->control.rates[0].idx = 0;
+	tx_info->control.rates[0].count = 1;
+	tx_info->control.rates[0].flags = IEEE80211_TX_RC_MCS;
+	tx_info->control.rates[1].idx = -1;
+
+	init_completion(&sc->paprd_complete);
+	sc->paprd_pending = true;
+	txctl.paprd = BIT(chain);
+	if (ath_tx_start(hw, skb, &txctl) != 0)
+		return false;
+
+	time_left = wait_for_completion_timeout(&sc->paprd_complete,
+			msecs_to_jiffies(ATH_PAPRD_TIMEOUT));
+	sc->paprd_pending = false;
+
+	if (!time_left)
+		ath_dbg(ath9k_hw_common(sc->sc_ah), ATH_DBG_CALIBRATE,
+			"Timeout waiting for paprd training on TX chain %d\n",
+			chain);
+
+	return !!time_left;
+}
+
 void ath_paprd_calibrate(struct work_struct *work)
 {
 	struct ath_softc *sc = container_of(work, struct ath_softc, paprd_work);
@@ -335,28 +364,23 @@ void ath_paprd_calibrate(struct work_struct *work)
 	struct ath_hw *ah = sc->sc_ah;
 	struct ieee80211_hdr *hdr;
 	struct sk_buff *skb = NULL;
-	struct ieee80211_tx_info *tx_info;
-	int band = hw->conf.channel->band;
-	struct ieee80211_supported_band *sband = &sc->sbands[band];
-	struct ath_tx_control txctl;
 	struct ath9k_hw_cal_data *caldata = ah->caldata;
 	struct ath_common *common = ath9k_hw_common(ah);
-	int qnum, ftype;
+	int ftype;
 	int chain_ok = 0;
 	int chain;
 	int len = 1800;
-	int time_left;
-	int i;
 
 	if (!caldata)
 		return;
 
+	if (ar9003_paprd_init_table(ah) < 0)
+		return;
+
 	skb = alloc_skb(len, GFP_KERNEL);
 	if (!skb)
 		return;
 
-	tx_info = IEEE80211_SKB_CB(skb);
-
 	skb_put(skb, len);
 	memset(skb->data, 0, len);
 	hdr = (struct ieee80211_hdr *)skb->data;
@@ -367,40 +391,25 @@ void ath_paprd_calibrate(struct work_struct *work)
 	memcpy(hdr->addr2, hw->wiphy->perm_addr, ETH_ALEN);
 	memcpy(hdr->addr3, hw->wiphy->perm_addr, ETH_ALEN);
 
-	memset(&txctl, 0, sizeof(txctl));
-	qnum = sc->tx.hwq_map[WME_AC_BE];
-	txctl.txq = &sc->tx.txq[qnum];
-
 	ath9k_ps_wakeup(sc);
-	ar9003_paprd_init_table(ah);
 	for (chain = 0; chain < AR9300_MAX_CHAINS; chain++) {
 		if (!(common->tx_chainmask & BIT(chain)))
 			continue;
 
 		chain_ok = 0;
-		memset(tx_info, 0, sizeof(*tx_info));
-		tx_info->band = band;
 
-		for (i = 0; i < 4; i++) {
-			tx_info->control.rates[i].idx = sband->n_bitrates - 1;
-			tx_info->control.rates[i].count = 6;
-		}
+		ath_dbg(common, ATH_DBG_CALIBRATE,
+			"Sending PAPRD frame for thermal measurement "
+			"on chain %d\n", chain);
+		if (!ath_paprd_send_frame(sc, skb, chain))
+			goto fail_paprd;
 
-		init_completion(&sc->paprd_complete);
 		ar9003_paprd_setup_gain_table(ah, chain);
-		txctl.paprd = BIT(chain);
-		if (ath_tx_start(hw, skb, &txctl) != 0)
-			break;
 
-		time_left = wait_for_completion_timeout(&sc->paprd_complete,
-				msecs_to_jiffies(ATH_PAPRD_TIMEOUT));
-		if (!time_left) {
-			ath_print(ath9k_hw_common(ah), ATH_DBG_CALIBRATE,
-				  "Timeout waiting for paprd training on "
-				  "TX chain %d\n",
-				  chain);
+		ath_dbg(common, ATH_DBG_CALIBRATE,
+			"Sending PAPRD training frame on chain %d\n", chain);
+		if (!ath_paprd_send_frame(sc, skb, chain))
 			goto fail_paprd;
-		}
 
 		if (!ar9003_paprd_is_done(ah))
 			break;
@@ -457,7 +466,7 @@ void ath_ani_calibrate(unsigned long data)
 	/* Long calibration runs independently of short calibration. */
 	if ((timestamp - common->ani.longcal_timer) >= long_cal_interval) {
 		longcal = true;
-		ath_print(common, ATH_DBG_ANI, "longcal @%lu\n", jiffies);
+		ath_dbg(common, ATH_DBG_ANI, "longcal @%lu\n", jiffies);
 		common->ani.longcal_timer = timestamp;
 	}
 
@@ -465,8 +474,8 @@ void ath_ani_calibrate(unsigned long data)
 	if (!common->ani.caldone) {
 		if ((timestamp - common->ani.shortcal_timer) >= short_cal_interval) {
 			shortcal = true;
-			ath_print(common, ATH_DBG_ANI,
-				  "shortcal @%lu\n", jiffies);
+			ath_dbg(common, ATH_DBG_ANI,
+				"shortcal @%lu\n", jiffies);
 			common->ani.shortcal_timer = timestamp;
 			common->ani.resetcal_timer = timestamp;
 		}
@@ -525,49 +534,25 @@ set_timer:
 	if ((sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_PAPRD) && ah->caldata) {
 		if (!ah->caldata->paprd_done)
 			ieee80211_queue_work(sc->hw, &sc->paprd_work);
-		else
+		else if (!ah->paprd_table_write_done)
 			ath_paprd_activate(sc);
 	}
 }
 
-/*
- * Update tx/rx chainmask. For legacy association,
- * hard code chainmask to 1x1, for 11n association, use
- * the chainmask configuration, for bt coexistence, use
- * the chainmask configuration even in legacy mode.
- */
-void ath_update_chainmask(struct ath_softc *sc, int is_ht)
-{
-	struct ath_hw *ah = sc->sc_ah;
-	struct ath_common *common = ath9k_hw_common(ah);
-
-	if ((sc->sc_flags & SC_OP_OFFCHANNEL) || is_ht ||
-	    (ah->btcoex_hw.scheme != ATH_BTCOEX_CFG_NONE)) {
-		common->tx_chainmask = ah->caps.tx_chainmask;
-		common->rx_chainmask = ah->caps.rx_chainmask;
-	} else {
-		common->tx_chainmask = 1;
-		common->rx_chainmask = 1;
-	}
-
-	ath_print(common, ATH_DBG_CONFIG,
-		  "tx chmask: %d, rx chmask: %d\n",
-		  common->tx_chainmask,
-		  common->rx_chainmask);
-}
-
 static void ath_node_attach(struct ath_softc *sc, struct ieee80211_sta *sta)
 {
 	struct ath_node *an;
-
+	struct ath_hw *ah = sc->sc_ah;
 	an = (struct ath_node *)sta->drv_priv;
 
+	if ((ah->caps.hw_caps) & ATH9K_HW_CAP_APM)
+		sc->sc_flags |= SC_OP_ENABLE_APM;
+
 	if (sc->sc_flags & SC_OP_TXAGGR) {
 		ath_tx_node_init(sc, an);
 		an->maxampdu = 1 << (IEEE80211_HT_MAX_AMPDU_FACTOR +
 				     sta->ht_cap.ampdu_factor);
 		an->mpdudensity = parse_mpdudensity(sta->ht_cap.ampdu_density);
-		an->last_rssi = ATH_RSSI_DUMMY_MARKER;
 	}
 }
 
@@ -615,6 +600,8 @@ void ath9k_tasklet(unsigned long data)
 		return;
 	}
 
+	spin_lock(&sc->sc_pcu_lock);
+
 	if (!ath9k_hw_check_alive(ah))
 		ieee80211_queue_work(sc->hw, &sc->hw_check_work);
 
@@ -625,15 +612,12 @@ void ath9k_tasklet(unsigned long data)
 		rxmask = (ATH9K_INT_RX | ATH9K_INT_RXEOL | ATH9K_INT_RXORN);
 
 	if (status & rxmask) {
-		spin_lock_bh(&sc->rx.pcu_lock);
-
 		/* Check for high priority Rx first */
 		if ((ah->caps.hw_caps & ATH9K_HW_CAP_EDMA) &&
 		    (status & ATH9K_INT_RXHP))
 			ath_rx_tasklet(sc, 0, true);
 
 		ath_rx_tasklet(sc, 0, false);
-		spin_unlock_bh(&sc->rx.pcu_lock);
 	}
 
 	if (status & ATH9K_INT_TX) {
@@ -648,8 +632,8 @@ void ath9k_tasklet(unsigned long data)
 		 * TSF sync does not look correct; remain awake to sync with
 		 * the next Beacon.
 		 */
-		ath_print(common, ATH_DBG_PS,
-			  "TSFOOR - Sync with next Beacon\n");
+		ath_dbg(common, ATH_DBG_PS,
+			"TSFOOR - Sync with next Beacon\n");
 		sc->ps_flags |= PS_WAIT_FOR_BEACON | PS_BEACON_SYNC;
 	}
 
@@ -658,7 +642,9 @@ void ath9k_tasklet(unsigned long data)
 			ath_gen_timer_isr(sc->sc_ah);
 
 	/* re-enable hardware interrupt */
-	ath9k_hw_set_interrupts(ah, ah->imask);
+	ath9k_hw_enable_interrupts(ah);
+
+	spin_unlock(&sc->sc_pcu_lock);
 	ath9k_ps_restore(sc);
 }
 
@@ -757,7 +743,7 @@ irqreturn_t ath_isr(int irq, void *dev)
 		 * interrupt; otherwise it will continue to
 		 * fire.
 		 */
-		ath9k_hw_set_interrupts(ah, 0);
+		ath9k_hw_disable_interrupts(ah);
 		/*
 		 * Let the hal handle the event. We assume
 		 * it will clear whatever condition caused
@@ -766,11 +752,13 @@ irqreturn_t ath_isr(int irq, void *dev)
 		spin_lock(&common->cc_lock);
 		ath9k_hw_proc_mib_event(ah);
 		spin_unlock(&common->cc_lock);
-		ath9k_hw_set_interrupts(ah, ah->imask);
+		ath9k_hw_enable_interrupts(ah);
 	}
 
 	if (!(ah->caps.hw_caps & ATH9K_HW_CAP_AUTOSLEEP))
 		if (status & ATH9K_INT_TIM_TIMER) {
+			if (ATH_DBG_WARN_ON_ONCE(sc->ps_idle))
+				goto chip_reset;
 			/* Clear RxAbort bit so that we can
 			 * receive frames */
 			ath9k_setpower(sc, ATH9K_PM_AWAKE);
@@ -783,8 +771,8 @@ chip_reset:
 	ath_debug_stat_interrupt(sc, status);
 
 	if (sched) {
-		/* turn off every interrupt except SWBA */
-		ath9k_hw_set_interrupts(ah, (ah->imask & ATH9K_INT_SWBA));
+		/* turn off every interrupt */
+		ath9k_hw_disable_interrupts(ah);
 		tasklet_schedule(&sc->intr_tq);
 	}
 
@@ -836,16 +824,18 @@ static u32 ath_get_extchanmode(struct ath_softc *sc,
 }
 
 static void ath9k_bss_assoc_info(struct ath_softc *sc,
+				 struct ieee80211_hw *hw,
 				 struct ieee80211_vif *vif,
 				 struct ieee80211_bss_conf *bss_conf)
 {
+	struct ath_wiphy *aphy = hw->priv;
 	struct ath_hw *ah = sc->sc_ah;
 	struct ath_common *common = ath9k_hw_common(ah);
 
 	if (bss_conf->assoc) {
-		ath_print(common, ATH_DBG_CONFIG,
-			  "Bss Info ASSOC %d, bssid: %pM\n",
-			   bss_conf->aid, common->curbssid);
+		ath_dbg(common, ATH_DBG_CONFIG,
+			"Bss Info ASSOC %d, bssid: %pM\n",
+			bss_conf->aid, common->curbssid);
 
 		/* New association, store aid */
 		common->curaid = bss_conf->aid;
@@ -862,12 +852,13 @@ static void ath9k_bss_assoc_info(struct ath_softc *sc,
 		ath_beacon_config(sc, vif);
 
 		/* Reset rssi stats */
+		aphy->last_rssi = ATH_RSSI_DUMMY_MARKER;
 		sc->sc_ah->stats.avgbrssi = ATH_RSSI_DUMMY_MARKER;
 
 		sc->sc_flags |= SC_OP_ANI_RUN;
 		ath_start_ani(common);
 	} else {
-		ath_print(common, ATH_DBG_CONFIG, "Bss Info DISASSOC\n");
+		ath_dbg(common, ATH_DBG_CONFIG, "Bss Info DISASSOC\n");
 		common->curaid = 0;
 		/* Stop ANI */
 		sc->sc_flags &= ~SC_OP_ANI_RUN;
@@ -883,31 +874,25 @@ void ath_radio_enable(struct ath_softc *sc, struct ieee80211_hw *hw)
 	int r;
 
 	ath9k_ps_wakeup(sc);
+	spin_lock_bh(&sc->sc_pcu_lock);
+
 	ath9k_hw_configpcipowersave(ah, 0, 0);
 
 	if (!ah->curchan)
 		ah->curchan = ath_get_curchannel(sc, sc->hw);
 
-	spin_lock_bh(&sc->rx.pcu_lock);
-	spin_lock_bh(&sc->sc_resetlock);
 	r = ath9k_hw_reset(ah, ah->curchan, ah->caldata, false);
 	if (r) {
-		ath_print(common, ATH_DBG_FATAL,
-			  "Unable to reset channel (%u MHz), "
-			  "reset status %d\n",
-			  channel->center_freq, r);
+		ath_err(common,
+			"Unable to reset channel (%u MHz), reset status %d\n",
+			channel->center_freq, r);
 	}
-	spin_unlock_bh(&sc->sc_resetlock);
 
 	ath_update_txpow(sc);
 	if (ath_startrecv(sc) != 0) {
-		ath_print(common, ATH_DBG_FATAL,
-			  "Unable to restart recv logic\n");
-		spin_unlock_bh(&sc->rx.pcu_lock);
-		return;
+		ath_err(common, "Unable to restart recv logic\n");
+		goto out;
 	}
-	spin_unlock_bh(&sc->rx.pcu_lock);
-
 	if (sc->sc_flags & SC_OP_BEACONS)
 		ath_beacon_config(sc, NULL);	/* restart beacons */
 
@@ -920,6 +905,9 @@ void ath_radio_enable(struct ath_softc *sc, struct ieee80211_hw *hw)
 	ath9k_hw_set_gpio(ah, ah->led_pin, 0);
 
 	ieee80211_wake_queues(hw);
+out:
+	spin_unlock_bh(&sc->sc_pcu_lock);
+
 	ath9k_ps_restore(sc);
 }
 
@@ -930,6 +918,8 @@ void ath_radio_disable(struct ath_softc *sc, struct ieee80211_hw *hw)
 	int r;
 
 	ath9k_ps_wakeup(sc);
+	spin_lock_bh(&sc->sc_pcu_lock);
+
 	ieee80211_stop_queues(hw);
 
 	/*
@@ -942,34 +932,30 @@ void ath_radio_disable(struct ath_softc *sc, struct ieee80211_hw *hw)
 	}
 
 	/* Disable interrupts */
-	ath9k_hw_set_interrupts(ah, 0);
+	ath9k_hw_disable_interrupts(ah);
 
 	ath_drain_all_txq(sc, false);	/* clear pending tx frames */
 
-	spin_lock_bh(&sc->rx.pcu_lock);
-
 	ath_stoprecv(sc);		/* turn off frame recv */
 	ath_flushrecv(sc);		/* flush recv queue */
 
 	if (!ah->curchan)
 		ah->curchan = ath_get_curchannel(sc, hw);
 
-	spin_lock_bh(&sc->sc_resetlock);
 	r = ath9k_hw_reset(ah, ah->curchan, ah->caldata, false);
 	if (r) {
-		ath_print(ath9k_hw_common(sc->sc_ah), ATH_DBG_FATAL,
-			  "Unable to reset channel (%u MHz), "
-			  "reset status %d\n",
-			  channel->center_freq, r);
+		ath_err(ath9k_hw_common(sc->sc_ah),
+			"Unable to reset channel (%u MHz), reset status %d\n",
+			channel->center_freq, r);
 	}
-	spin_unlock_bh(&sc->sc_resetlock);
 
 	ath9k_hw_phy_disable(ah);
 
-	spin_unlock_bh(&sc->rx.pcu_lock);
-
 	ath9k_hw_configpcipowersave(ah, 1, 1);
+
+	spin_unlock_bh(&sc->sc_pcu_lock);
 	ath9k_ps_restore(sc);
+
 	ath9k_setpower(sc, ATH9K_PM_FULL_SLEEP);
 }
 
@@ -983,28 +969,23 @@ int ath_reset(struct ath_softc *sc, bool retry_tx)
 	/* Stop ANI */
 	del_timer_sync(&common->ani.timer);
 
+	spin_lock_bh(&sc->sc_pcu_lock);
+
 	ieee80211_stop_queues(hw);
 
-	ath9k_hw_set_interrupts(ah, 0);
+	ath9k_hw_disable_interrupts(ah);
 	ath_drain_all_txq(sc, retry_tx);
 
-	spin_lock_bh(&sc->rx.pcu_lock);
-
 	ath_stoprecv(sc);
 	ath_flushrecv(sc);
 
-	spin_lock_bh(&sc->sc_resetlock);
 	r = ath9k_hw_reset(ah, sc->sc_ah->curchan, ah->caldata, false);
 	if (r)
-		ath_print(common, ATH_DBG_FATAL,
-			  "Unable to reset hardware; reset status %d\n", r);
-	spin_unlock_bh(&sc->sc_resetlock);
+		ath_err(common,
+			"Unable to reset hardware; reset status %d\n", r);
 
 	if (ath_startrecv(sc) != 0)
-		ath_print(common, ATH_DBG_FATAL,
-			  "Unable to start recv logic\n");
-
-	spin_unlock_bh(&sc->rx.pcu_lock);
+		ath_err(common, "Unable to start recv logic\n");
 
 	/*
 	 * We may be doing a reset in response to a request
@@ -1030,6 +1011,7 @@ int ath_reset(struct ath_softc *sc, bool retry_tx)
 	}
 
 	ieee80211_wake_queues(hw);
+	spin_unlock_bh(&sc->sc_pcu_lock);
 
 	/* Start ANI */
 	ath_start_ani(common);
@@ -1037,56 +1019,6 @@ int ath_reset(struct ath_softc *sc, bool retry_tx)
 	return r;
 }
 
-static int ath_get_hal_qnum(u16 queue, struct ath_softc *sc)
-{
-	int qnum;
-
-	switch (queue) {
-	case 0:
-		qnum = sc->tx.hwq_map[WME_AC_VO];
-		break;
-	case 1:
-		qnum = sc->tx.hwq_map[WME_AC_VI];
-		break;
-	case 2:
-		qnum = sc->tx.hwq_map[WME_AC_BE];
-		break;
-	case 3:
-		qnum = sc->tx.hwq_map[WME_AC_BK];
-		break;
-	default:
-		qnum = sc->tx.hwq_map[WME_AC_BE];
-		break;
-	}
-
-	return qnum;
-}
-
-int ath_get_mac80211_qnum(u32 queue, struct ath_softc *sc)
-{
-	int qnum;
-
-	switch (queue) {
-	case WME_AC_VO:
-		qnum = 0;
-		break;
-	case WME_AC_VI:
-		qnum = 1;
-		break;
-	case WME_AC_BE:
-		qnum = 2;
-		break;
-	case WME_AC_BK:
-		qnum = 3;
-		break;
-	default:
-		qnum = -1;
-		break;
-	}
-
-	return qnum;
-}
-
 /* XXX: Remove me once we don't depend on ath9k_channel for all
  * this redundant data */
 void ath9k_update_ichannel(struct ath_softc *sc, struct ieee80211_hw *hw,
@@ -1125,9 +1057,9 @@ static int ath9k_start(struct ieee80211_hw *hw)
 	struct ath9k_channel *init_channel;
 	int r;
 
-	ath_print(common, ATH_DBG_CONFIG,
-		  "Starting driver with initial channel: %d MHz\n",
-		  curchan->center_freq);
+	ath_dbg(common, ATH_DBG_CONFIG,
+		"Starting driver with initial channel: %d MHz\n",
+		curchan->center_freq);
 
 	mutex_lock(&sc->mutex);
 
@@ -1168,19 +1100,15 @@ static int ath9k_start(struct ieee80211_hw *hw)
 	 * be followed by initialization of the appropriate bits
 	 * and then setup of the interrupt mask.
 	 */
-	spin_lock_bh(&sc->rx.pcu_lock);
-	spin_lock_bh(&sc->sc_resetlock);
+	spin_lock_bh(&sc->sc_pcu_lock);
 	r = ath9k_hw_reset(ah, init_channel, ah->caldata, false);
 	if (r) {
-		ath_print(common, ATH_DBG_FATAL,
-			  "Unable to reset hardware; reset status %d "
-			  "(freq %u MHz)\n", r,
-			  curchan->center_freq);
-		spin_unlock_bh(&sc->sc_resetlock);
-		spin_unlock_bh(&sc->rx.pcu_lock);
+		ath_err(common,
+			"Unable to reset hardware; reset status %d (freq %u MHz)\n",
+			r, curchan->center_freq);
+		spin_unlock_bh(&sc->sc_pcu_lock);
 		goto mutex_unlock;
 	}
-	spin_unlock_bh(&sc->sc_resetlock);
 
 	/*
 	 * This is needed only to setup initial state
@@ -1196,13 +1124,12 @@ static int ath9k_start(struct ieee80211_hw *hw)
 	 * here except setup the interrupt mask.
 	 */
 	if (ath_startrecv(sc) != 0) {
-		ath_print(common, ATH_DBG_FATAL,
-			  "Unable to start recv logic\n");
+		ath_err(common, "Unable to start recv logic\n");
 		r = -EIO;
-		spin_unlock_bh(&sc->rx.pcu_lock);
+		spin_unlock_bh(&sc->sc_pcu_lock);
 		goto mutex_unlock;
 	}
-	spin_unlock_bh(&sc->rx.pcu_lock);
+	spin_unlock_bh(&sc->sc_pcu_lock);
 
 	/* Setup our intr mask. */
 	ah->imask = ATH9K_INT_TX | ATH9K_INT_RXEOL |
@@ -1244,7 +1171,14 @@ static int ath9k_start(struct ieee80211_hw *hw)
 			ath9k_btcoex_timer_resume(sc);
 	}
 
-	pm_qos_update_request(&sc->pm_qos_req, 55);
+	/* User has the option to provide pm-qos value as a module
+	 * parameter rather than using the default value of
+	 * 'ATH9K_PM_QOS_DEFAULT_VALUE'.
+	 */
+	pm_qos_update_request(&sc->pm_qos_req, ath9k_pm_qos_value);
+
+	if (ah->caps.pcie_lcr_extsync_en && common->bus_ops->extn_synch_en)
+		common->bus_ops->extn_synch_en(common);
 
 mutex_unlock:
 	mutex_unlock(&sc->mutex);
@@ -1255,19 +1189,16 @@ mutex_unlock:
 static int ath9k_tx(struct ieee80211_hw *hw,
 		    struct sk_buff *skb)
 {
-	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
 	struct ath_wiphy *aphy = hw->priv;
 	struct ath_softc *sc = aphy->sc;
 	struct ath_common *common = ath9k_hw_common(sc->sc_ah);
 	struct ath_tx_control txctl;
-	int padpos, padsize;
 	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
-	int qnum;
 
 	if (aphy->state != ATH_WIPHY_ACTIVE && aphy->state != ATH_WIPHY_SCAN) {
-		ath_print(common, ATH_DBG_XMIT,
-			  "ath9k: %s: TX in unexpected wiphy state "
-			  "%d\n", wiphy_name(hw->wiphy), aphy->state);
+		ath_dbg(common, ATH_DBG_XMIT,
+			"ath9k: %s: TX in unexpected wiphy state %d\n",
+			wiphy_name(hw->wiphy), aphy->state);
 		goto exit;
 	}
 
@@ -1279,8 +1210,8 @@ static int ath9k_tx(struct ieee80211_hw *hw,
 		if (ieee80211_is_data(hdr->frame_control) &&
 		    !ieee80211_is_nullfunc(hdr->frame_control) &&
 		    !ieee80211_has_pm(hdr->frame_control)) {
-			ath_print(common, ATH_DBG_PS, "Add PM=1 for a TX frame "
-				  "while in PS mode\n");
+			ath_dbg(common, ATH_DBG_PS,
+				"Add PM=1 for a TX frame while in PS mode\n");
 			hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
 		}
 	}
@@ -1295,12 +1226,12 @@ static int ath9k_tx(struct ieee80211_hw *hw,
 		if (!(sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_AUTOSLEEP))
 			ath9k_hw_setrxabort(sc->sc_ah, 0);
 		if (ieee80211_is_pspoll(hdr->frame_control)) {
-			ath_print(common, ATH_DBG_PS,
-				  "Sending PS-Poll to pick a buffered frame\n");
+			ath_dbg(common, ATH_DBG_PS,
+				"Sending PS-Poll to pick a buffered frame\n");
 			sc->ps_flags |= PS_WAIT_FOR_PSPOLL_DATA;
 		} else {
-			ath_print(common, ATH_DBG_PS,
-				  "Wake up to complete TX\n");
+			ath_dbg(common, ATH_DBG_PS,
+				"Wake up to complete TX\n");
 			sc->ps_flags |= PS_WAIT_FOR_TX_ACK;
 		}
 		/*
@@ -1312,36 +1243,12 @@ static int ath9k_tx(struct ieee80211_hw *hw,
 	}
 
 	memset(&txctl, 0, sizeof(struct ath_tx_control));
+	txctl.txq = sc->tx.txq_map[skb_get_queue_mapping(skb)];
 
-	/*
-	 * As a temporary workaround, assign seq# here; this will likely need
-	 * to be cleaned up to work better with Beacon transmission and virtual
-	 * BSSes.
-	 */
-	if (info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) {
-		if (info->flags & IEEE80211_TX_CTL_FIRST_FRAGMENT)
-			sc->tx.seq_no += 0x10;
-		hdr->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG);
-		hdr->seq_ctrl |= cpu_to_le16(sc->tx.seq_no);
-	}
-
-	/* Add the padding after the header if this is not already done */
-	padpos = ath9k_cmn_padpos(hdr->frame_control);
-	padsize = padpos & 3;
-	if (padsize && skb->len>padpos) {
-		if (skb_headroom(skb) < padsize)
-			return -1;
-		skb_push(skb, padsize);
-		memmove(skb->data, skb->data + padsize, padpos);
-	}
-
-	qnum = ath_get_hal_qnum(skb_get_queue_mapping(skb), sc);
-	txctl.txq = &sc->tx.txq[qnum];
-
-	ath_print(common, ATH_DBG_XMIT, "transmitting packet, skb: %p\n", skb);
+	ath_dbg(common, ATH_DBG_XMIT, "transmitting packet, skb: %p\n", skb);
 
 	if (ath_tx_start(hw, skb, &txctl) != 0) {
-		ath_print(common, ATH_DBG_XMIT, "TX failed\n");
+		ath_dbg(common, ATH_DBG_XMIT, "TX failed\n");
 		goto exit;
 	}
 
@@ -1381,7 +1288,7 @@ static void ath9k_stop(struct ieee80211_hw *hw)
 	}
 
 	if (sc->sc_flags & SC_OP_INVALID) {
-		ath_print(common, ATH_DBG_ANY, "Device not present\n");
+		ath_dbg(common, ATH_DBG_ANY, "Device not present\n");
 		mutex_unlock(&sc->mutex);
 		return;
 	}
@@ -1400,26 +1307,30 @@ static void ath9k_stop(struct ieee80211_hw *hw)
 			ath9k_btcoex_timer_pause(sc);
 	}
 
+	spin_lock_bh(&sc->sc_pcu_lock);
+
 	/* make sure h/w will not generate any interrupt
 	 * before setting the invalid flag. */
-	ath9k_hw_set_interrupts(ah, 0);
+	ath9k_hw_disable_interrupts(ah);
 
-	spin_lock_bh(&sc->rx.pcu_lock);
 	if (!(sc->sc_flags & SC_OP_INVALID)) {
 		ath_drain_all_txq(sc, false);
 		ath_stoprecv(sc);
 		ath9k_hw_phy_disable(ah);
 	} else
 		sc->rx.rxlink = NULL;
-	spin_unlock_bh(&sc->rx.pcu_lock);
 
 	/* disable HAL and put h/w to sleep */
 	ath9k_hw_disable(ah);
 	ath9k_hw_configpcipowersave(ah, 1, 1);
+
+	spin_unlock_bh(&sc->sc_pcu_lock);
+
 	ath9k_ps_restore(sc);
 
-	/* Finally, put the chip in FULL SLEEP mode */
-	ath9k_setpower(sc, ATH9K_PM_FULL_SLEEP);
+	sc->ps_idle = true;
+	ath9k_set_wiphy_idle(aphy, true);
+	ath_radio_disable(sc, hw);
 
 	sc->sc_flags |= SC_OP_INVALID;
 
@@ -1427,7 +1338,7 @@ static void ath9k_stop(struct ieee80211_hw *hw)
 
 	mutex_unlock(&sc->mutex);
 
-	ath_print(common, ATH_DBG_CONFIG, "Driver halt\n");
+	ath_dbg(common, ATH_DBG_CONFIG, "Driver halt\n");
 }
 
 static int ath9k_add_interface(struct ieee80211_hw *hw,
@@ -1460,14 +1371,14 @@ static int ath9k_add_interface(struct ieee80211_hw *hw,
 		ic_opmode = vif->type;
 		break;
 	default:
-		ath_print(common, ATH_DBG_FATAL,
-			"Interface type %d not yet supported\n", vif->type);
+		ath_err(common, "Interface type %d not yet supported\n",
+			vif->type);
 		ret = -EOPNOTSUPP;
 		goto out;
 	}
 
-	ath_print(common, ATH_DBG_CONFIG,
-		  "Attach a VIF of type: %d\n", ic_opmode);
+	ath_dbg(common, ATH_DBG_CONFIG,
+		"Attach a VIF of type: %d\n", ic_opmode);
 
 	/* Set the VIF opmode */
 	avp->av_opmode = ic_opmode;
@@ -1513,15 +1424,83 @@ out:
 	return ret;
 }
 
+static void ath9k_reclaim_beacon(struct ath_softc *sc,
+				 struct ieee80211_vif *vif)
+{
+	struct ath_vif *avp = (void *)vif->drv_priv;
+
+	/* Disable SWBA interrupt */
+	sc->sc_ah->imask &= ~ATH9K_INT_SWBA;
+	ath9k_ps_wakeup(sc);
+	ath9k_hw_set_interrupts(sc->sc_ah, sc->sc_ah->imask);
+	ath9k_hw_stoptxdma(sc->sc_ah, sc->beacon.beaconq);
+	tasklet_kill(&sc->bcon_tasklet);
+	ath9k_ps_restore(sc);
+
+	ath_beacon_return(sc, avp);
+	sc->sc_flags &= ~SC_OP_BEACONS;
+
+	if (sc->nbcnvifs > 0) {
+		/* Re-enable beaconing */
+		sc->sc_ah->imask |= ATH9K_INT_SWBA;
+		ath9k_ps_wakeup(sc);
+		ath9k_hw_set_interrupts(sc->sc_ah, sc->sc_ah->imask);
+		ath9k_ps_restore(sc);
+	}
+}
+
+static int ath9k_change_interface(struct ieee80211_hw *hw,
+				  struct ieee80211_vif *vif,
+				  enum nl80211_iftype new_type,
+				  bool p2p)
+{
+	struct ath_wiphy *aphy = hw->priv;
+	struct ath_softc *sc = aphy->sc;
+	struct ath_common *common = ath9k_hw_common(sc->sc_ah);
+	int ret = 0;
+
+	ath_dbg(common, ATH_DBG_CONFIG, "Change Interface\n");
+	mutex_lock(&sc->mutex);
+
+	switch (new_type) {
+	case NL80211_IFTYPE_AP:
+	case NL80211_IFTYPE_ADHOC:
+		if (sc->nbcnvifs >= ATH_BCBUF) {
+			ath_err(common, "No beacon slot available\n");
+			ret = -ENOBUFS;
+			goto out;
+		}
+		break;
+	case NL80211_IFTYPE_STATION:
+		/* Stop ANI */
+		sc->sc_flags &= ~SC_OP_ANI_RUN;
+		del_timer_sync(&common->ani.timer);
+		if ((vif->type == NL80211_IFTYPE_AP) ||
+		    (vif->type == NL80211_IFTYPE_ADHOC))
+			ath9k_reclaim_beacon(sc, vif);
+		break;
+	default:
+		ath_err(common, "Interface type %d not yet supported\n",
+				vif->type);
+		ret = -ENOTSUPP;
+		goto out;
+	}
+	vif->type = new_type;
+	vif->p2p = p2p;
+
+out:
+	mutex_unlock(&sc->mutex);
+	return ret;
+}
+
 static void ath9k_remove_interface(struct ieee80211_hw *hw,
 				   struct ieee80211_vif *vif)
 {
 	struct ath_wiphy *aphy = hw->priv;
 	struct ath_softc *sc = aphy->sc;
 	struct ath_common *common = ath9k_hw_common(sc->sc_ah);
-	struct ath_vif *avp = (void *)vif->drv_priv;
 
-	ath_print(common, ATH_DBG_CONFIG, "Detach Interface\n");
+	ath_dbg(common, ATH_DBG_CONFIG, "Detach Interface\n");
 
 	mutex_lock(&sc->mutex);
 
@@ -1532,26 +1511,8 @@ static void ath9k_remove_interface(struct ieee80211_hw *hw,
 	/* Reclaim beacon resources */
 	if ((sc->sc_ah->opmode == NL80211_IFTYPE_AP) ||
 	    (sc->sc_ah->opmode == NL80211_IFTYPE_ADHOC) ||
-	    (sc->sc_ah->opmode == NL80211_IFTYPE_MESH_POINT)) {
-		/* Disable SWBA interrupt */
-		sc->sc_ah->imask &= ~ATH9K_INT_SWBA;
-		ath9k_ps_wakeup(sc);
-		ath9k_hw_set_interrupts(sc->sc_ah, sc->sc_ah->imask);
-		ath9k_hw_stoptxdma(sc->sc_ah, sc->beacon.beaconq);
-		ath9k_ps_restore(sc);
-		tasklet_kill(&sc->bcon_tasklet);
-	}
-
-	ath_beacon_return(sc, avp);
-	sc->sc_flags &= ~SC_OP_BEACONS;
-
-	if (sc->nbcnvifs) {
-		/* Re-enable SWBA interrupt */
-		sc->sc_ah->imask |= ATH9K_INT_SWBA;
-		ath9k_ps_wakeup(sc);
-		ath9k_hw_set_interrupts(sc->sc_ah, sc->sc_ah->imask);
-		ath9k_ps_restore(sc);
-	}
+	    (sc->sc_ah->opmode == NL80211_IFTYPE_MESH_POINT))
+		ath9k_reclaim_beacon(sc, vif);
 
 	sc->nvifs--;
 
@@ -1631,8 +1592,8 @@ static int ath9k_config(struct ieee80211_hw *hw, u32 changed)
 		if (enable_radio) {
 			sc->ps_idle = false;
 			ath_radio_enable(sc, hw);
-			ath_print(common, ATH_DBG_CONFIG,
-				  "not-idle: enabling radio\n");
+			ath_dbg(common, ATH_DBG_CONFIG,
+				"not-idle: enabling radio\n");
 		}
 	}
 
@@ -1654,12 +1615,12 @@ static int ath9k_config(struct ieee80211_hw *hw, u32 changed)
 
 	if (changed & IEEE80211_CONF_CHANGE_MONITOR) {
 		if (conf->flags & IEEE80211_CONF_MONITOR) {
-			ath_print(common, ATH_DBG_CONFIG,
-				  "Monitor mode is enabled\n");
+			ath_dbg(common, ATH_DBG_CONFIG,
+				"Monitor mode is enabled\n");
 			sc->sc_ah->is_monitoring = true;
 		} else {
-			ath_print(common, ATH_DBG_CONFIG,
-				  "Monitor mode is disabled\n");
+			ath_dbg(common, ATH_DBG_CONFIG,
+				"Monitor mode is disabled\n");
 			sc->sc_ah->is_monitoring = false;
 		}
 	}
@@ -1691,14 +1652,12 @@ static int ath9k_config(struct ieee80211_hw *hw, u32 changed)
 			goto skip_chan_change;
 		}
 
-		ath_print(common, ATH_DBG_CONFIG, "Set channel: %d MHz\n",
-			  curchan->center_freq);
+		ath_dbg(common, ATH_DBG_CONFIG, "Set channel: %d MHz\n",
+			curchan->center_freq);
 
 		/* XXX: remove me eventualy */
 		ath9k_update_ichannel(sc, hw, &sc->sc_ah->channels[pos]);
 
-		ath_update_chainmask(sc, conf_is_ht(conf));
-
 		/* update survey stats for the old channel before switching */
 		spin_lock_irqsave(&common->cc_lock, flags);
 		ath_update_survey_stats(sc);
@@ -1725,8 +1684,7 @@ static int ath9k_config(struct ieee80211_hw *hw, u32 changed)
 		}
 
 		if (ath_set_channel(sc, hw, &sc->sc_ah->channels[pos]) < 0) {
-			ath_print(common, ATH_DBG_FATAL,
-				  "Unable to set channel\n");
+			ath_err(common, "Unable to set channel\n");
 			mutex_unlock(&sc->mutex);
 			return -EINVAL;
 		}
@@ -1751,7 +1709,7 @@ skip_chan_change:
 	spin_unlock_bh(&sc->wiphy_lock);
 
 	if (disable_radio) {
-		ath_print(common, ATH_DBG_CONFIG, "idle: disabling radio\n");
+		ath_dbg(common, ATH_DBG_CONFIG, "idle: disabling radio\n");
 		sc->ps_idle = true;
 		ath_radio_disable(sc, hw);
 	}
@@ -1790,8 +1748,8 @@ static void ath9k_configure_filter(struct ieee80211_hw *hw,
 	ath9k_hw_setrxfilter(sc->sc_ah, rfilt);
 	ath9k_ps_restore(sc);
 
-	ath_print(ath9k_hw_common(sc->sc_ah), ATH_DBG_CONFIG,
-		  "Set HW RX filter: 0x%x\n", rfilt);
+	ath_dbg(ath9k_hw_common(sc->sc_ah), ATH_DBG_CONFIG,
+		"Set HW RX filter: 0x%x\n", rfilt);
 }
 
 static int ath9k_sta_add(struct ieee80211_hw *hw,
@@ -1824,12 +1782,15 @@ static int ath9k_conf_tx(struct ieee80211_hw *hw, u16 queue,
 	struct ath_wiphy *aphy = hw->priv;
 	struct ath_softc *sc = aphy->sc;
 	struct ath_common *common = ath9k_hw_common(sc->sc_ah);
+	struct ath_txq *txq;
 	struct ath9k_tx_queue_info qi;
-	int ret = 0, qnum;
+	int ret = 0;
 
 	if (queue >= WME_NUM_AC)
 		return 0;
 
+	txq = sc->tx.txq_map[queue];
+
 	mutex_lock(&sc->mutex);
 
 	memset(&qi, 0, sizeof(struct ath9k_tx_queue_info));
@@ -1838,20 +1799,18 @@ static int ath9k_conf_tx(struct ieee80211_hw *hw, u16 queue,
 	qi.tqi_cwmin = params->cw_min;
 	qi.tqi_cwmax = params->cw_max;
 	qi.tqi_burstTime = params->txop;
-	qnum = ath_get_hal_qnum(queue, sc);
 
-	ath_print(common, ATH_DBG_CONFIG,
-		  "Configure tx [queue/halq] [%d/%d],  "
-		  "aifs: %d, cw_min: %d, cw_max: %d, txop: %d\n",
-		  queue, qnum, params->aifs, params->cw_min,
-		  params->cw_max, params->txop);
+	ath_dbg(common, ATH_DBG_CONFIG,
+		"Configure tx [queue/halq] [%d/%d], aifs: %d, cw_min: %d, cw_max: %d, txop: %d\n",
+		queue, txq->axq_qnum, params->aifs, params->cw_min,
+		params->cw_max, params->txop);
 
-	ret = ath_txq_update(sc, qnum, &qi);
+	ret = ath_txq_update(sc, txq->axq_qnum, &qi);
 	if (ret)
-		ath_print(common, ATH_DBG_FATAL, "TXQ Update failed\n");
+		ath_err(common, "TXQ Update failed\n");
 
 	if (sc->sc_ah->opmode == NL80211_IFTYPE_ADHOC)
-		if ((qnum == sc->tx.hwq_map[WME_AC_BE]) && !ret)
+		if (queue == WME_AC_BE && !ret)
 			ath_beaconq_config(sc);
 
 	mutex_unlock(&sc->mutex);
@@ -1870,12 +1829,12 @@ static int ath9k_set_key(struct ieee80211_hw *hw,
 	struct ath_common *common = ath9k_hw_common(sc->sc_ah);
 	int ret = 0;
 
-	if (modparam_nohwcrypt)
+	if (ath9k_modparam_nohwcrypt)
 		return -ENOSPC;
 
 	mutex_lock(&sc->mutex);
 	ath9k_ps_wakeup(sc);
-	ath_print(common, ATH_DBG_CONFIG, "Set HW Key\n");
+	ath_dbg(common, ATH_DBG_CONFIG, "Set HW Key\n");
 
 	switch (cmd) {
 	case SET_KEY:
@@ -1930,13 +1889,8 @@ static void ath9k_bss_info_changed(struct ieee80211_hw *hw,
 		/* Set aggregation protection mode parameters */
 		sc->config.ath_aggr_prot = 0;
 
-		/* Only legacy IBSS for now */
-		if (vif->type == NL80211_IFTYPE_ADHOC)
-			ath_update_chainmask(sc, 0);
-
-		ath_print(common, ATH_DBG_CONFIG,
-			  "BSSID: %pM aid: 0x%x\n",
-			  common->curbssid, common->curaid);
+		ath_dbg(common, ATH_DBG_CONFIG, "BSSID: %pM aid: 0x%x\n",
+			common->curbssid, common->curaid);
 
 		/* need to reconfigure the beacon */
 		sc->sc_flags &= ~SC_OP_BEACONS ;
@@ -1992,8 +1946,8 @@ static void ath9k_bss_info_changed(struct ieee80211_hw *hw,
 	}
 
 	if (changed & BSS_CHANGED_ERP_PREAMBLE) {
-		ath_print(common, ATH_DBG_CONFIG, "BSS Changed PREAMBLE %d\n",
-			  bss_conf->use_short_preamble);
+		ath_dbg(common, ATH_DBG_CONFIG, "BSS Changed PREAMBLE %d\n",
+			bss_conf->use_short_preamble);
 		if (bss_conf->use_short_preamble)
 			sc->sc_flags |= SC_OP_PREAMBLE_SHORT;
 		else
@@ -2001,8 +1955,8 @@ static void ath9k_bss_info_changed(struct ieee80211_hw *hw,
 	}
 
 	if (changed & BSS_CHANGED_ERP_CTS_PROT) {
-		ath_print(common, ATH_DBG_CONFIG, "BSS Changed CTS PROT %d\n",
-			  bss_conf->use_cts_prot);
+		ath_dbg(common, ATH_DBG_CONFIG, "BSS Changed CTS PROT %d\n",
+			bss_conf->use_cts_prot);
 		if (bss_conf->use_cts_prot &&
 		    hw->conf.channel->band != IEEE80211_BAND_5GHZ)
 			sc->sc_flags |= SC_OP_PROTECT_ENABLE;
@@ -2011,9 +1965,9 @@ static void ath9k_bss_info_changed(struct ieee80211_hw *hw,
 	}
 
 	if (changed & BSS_CHANGED_ASSOC) {
-		ath_print(common, ATH_DBG_CONFIG, "BSS Changed ASSOC %d\n",
+		ath_dbg(common, ATH_DBG_CONFIG, "BSS Changed ASSOC %d\n",
 			bss_conf->assoc);
-		ath9k_bss_assoc_info(sc, vif, bss_conf);
+		ath9k_bss_assoc_info(sc, hw, vif, bss_conf);
 	}
 
 	mutex_unlock(&sc->mutex);
@@ -2026,7 +1980,9 @@ static u64 ath9k_get_tsf(struct ieee80211_hw *hw)
 	struct ath_softc *sc = aphy->sc;
 
 	mutex_lock(&sc->mutex);
+	ath9k_ps_wakeup(sc);
 	tsf = ath9k_hw_gettsf64(sc->sc_ah);
+	ath9k_ps_restore(sc);
 	mutex_unlock(&sc->mutex);
 
 	return tsf;
@@ -2038,7 +1994,9 @@ static void ath9k_set_tsf(struct ieee80211_hw *hw, u64 tsf)
 	struct ath_softc *sc = aphy->sc;
 
 	mutex_lock(&sc->mutex);
+	ath9k_ps_wakeup(sc);
 	ath9k_hw_settsf64(sc->sc_ah, tsf);
+	ath9k_ps_restore(sc);
 	mutex_unlock(&sc->mutex);
 }
 
@@ -2076,6 +2034,9 @@ static int ath9k_ampdu_action(struct ieee80211_hw *hw,
 	case IEEE80211_AMPDU_RX_STOP:
 		break;
 	case IEEE80211_AMPDU_TX_START:
+		if (!(sc->sc_flags & SC_OP_TXAGGR))
+			return -EOPNOTSUPP;
+
 		ath9k_ps_wakeup(sc);
 		ret = ath_tx_aggr_start(sc, sta, tid, ssn);
 		if (!ret)
@@ -2094,8 +2055,7 @@ static int ath9k_ampdu_action(struct ieee80211_hw *hw,
 		ath9k_ps_restore(sc);
 		break;
 	default:
-		ath_print(ath9k_hw_common(sc->sc_ah), ATH_DBG_FATAL,
-			  "Unknown AMPDU action\n");
+		ath_err(ath9k_hw_common(sc->sc_ah), "Unknown AMPDU action\n");
 	}
 
 	local_bh_enable();
@@ -2195,6 +2155,7 @@ struct ieee80211_ops ath9k_ops = {
 	.start 		    = ath9k_start,
 	.stop 		    = ath9k_stop,
 	.add_interface 	    = ath9k_add_interface,
+	.change_interface   = ath9k_change_interface,
 	.remove_interface   = ath9k_remove_interface,
 	.config 	    = ath9k_config,
 	.configure_filter   = ath9k_configure_filter,