openwrt-xburst/package/mac80211/patches/300-pending_work.patch

--- a/drivers/net/wireless/ath/ath5k/base.c
+++ b/drivers/net/wireless/ath/ath5k/base.c
@@ -325,6 +325,8 @@ ath5k_setup_channels(struct ath5k_hw *ah
 		if (!ath5k_is_standard_channel(ch, band))
 			continue;
 
+		channels[count].max_power = AR5K_TUNE_MAX_TXPOWER/2;
+
 		count++;
 	}
 
--- a/net/mac80211/agg-rx.c
+++ b/net/mac80211/agg-rx.c
@@ -203,6 +203,8 @@ static void ieee80211_send_addba_resp(st
 		memcpy(mgmt->bssid, sdata->u.mgd.bssid, ETH_ALEN);
 	else if (sdata->vif.type == NL80211_IFTYPE_ADHOC)
 		memcpy(mgmt->bssid, sdata->u.ibss.bssid, ETH_ALEN);
+	else if (sdata->vif.type == NL80211_IFTYPE_WDS)
+		memcpy(mgmt->bssid, da, ETH_ALEN);
 
 	mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
 					  IEEE80211_STYPE_ACTION);
--- a/net/mac80211/agg-tx.c
+++ b/net/mac80211/agg-tx.c
@@ -81,7 +81,8 @@ static void ieee80211_send_addba_request
 	memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
 	if (sdata->vif.type == NL80211_IFTYPE_AP ||
 	    sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
-	    sdata->vif.type == NL80211_IFTYPE_MESH_POINT)
+	    sdata->vif.type == NL80211_IFTYPE_MESH_POINT ||
+	    sdata->vif.type == NL80211_IFTYPE_WDS)
 		memcpy(mgmt->bssid, sdata->vif.addr, ETH_ALEN);
 	else if (sdata->vif.type == NL80211_IFTYPE_STATION)
 		memcpy(mgmt->bssid, sdata->u.mgd.bssid, ETH_ALEN);
@@ -460,6 +461,7 @@ int ieee80211_start_tx_ba_session(struct
 	    sdata->vif.type != NL80211_IFTYPE_MESH_POINT &&
 	    sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
 	    sdata->vif.type != NL80211_IFTYPE_AP &&
+	    sdata->vif.type != NL80211_IFTYPE_WDS &&
 	    sdata->vif.type != NL80211_IFTYPE_ADHOC)
 		return -EINVAL;
 
@@ -869,7 +871,7 @@ void ieee80211_process_addba_resp(struct
 
 	} else {
 		___ieee80211_stop_tx_ba_session(sta, tid, WLAN_BACK_INITIATOR,
-						true);
+						false);
 	}
 
  out:
--- a/net/mac80211/debugfs_sta.c
+++ b/net/mac80211/debugfs_sta.c
@@ -63,11 +63,11 @@ static ssize_t sta_flags_read(struct fil
 	test_sta_flag(sta, WLAN_STA_##flg) ? #flg "\n" : ""
 
 	int res = scnprintf(buf, sizeof(buf),
-			    "%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s",
+			    "%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s",
 			    TEST(AUTH), TEST(ASSOC), TEST(PS_STA),
 			    TEST(PS_DRIVER), TEST(AUTHORIZED),
 			    TEST(SHORT_PREAMBLE),
-			    TEST(WME), TEST(WDS), TEST(CLEAR_PS_FILT),
+			    TEST(WME), TEST(CLEAR_PS_FILT),
 			    TEST(MFP), TEST(BLOCK_BA), TEST(PSPOLL),
 			    TEST(UAPSD), TEST(SP), TEST(TDLS_PEER),
 			    TEST(TDLS_PEER_AUTH), TEST(4ADDR_EVENT),
--- a/net/mac80211/iface.c
+++ b/net/mac80211/iface.c
@@ -420,7 +420,6 @@ int ieee80211_do_open(struct wireless_de
 	struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
 	struct net_device *dev = wdev->netdev;
 	struct ieee80211_local *local = sdata->local;
-	struct sta_info *sta;
 	u32 changed = 0;
 	int res;
 	u32 hw_reconf_flags = 0;
@@ -575,30 +574,8 @@ int ieee80211_do_open(struct wireless_de
 
 	set_bit(SDATA_STATE_RUNNING, &sdata->state);
 
-	if (sdata->vif.type == NL80211_IFTYPE_WDS) {
-		/* Create STA entry for the WDS peer */
-		sta = sta_info_alloc(sdata, sdata->u.wds.remote_addr,
-				     GFP_KERNEL);
-		if (!sta) {
-			res = -ENOMEM;
-			goto err_del_interface;
-		}
-
-		sta_info_pre_move_state(sta, IEEE80211_STA_AUTH);
-		sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC);
-		sta_info_pre_move_state(sta, IEEE80211_STA_AUTHORIZED);
-
-		res = sta_info_insert(sta);
-		if (res) {
-			/* STA has been freed */
-			goto err_del_interface;
-		}
-
-		rate_control_rate_init(sta);
-		netif_carrier_on(dev);
-	} else if (sdata->vif.type == NL80211_IFTYPE_P2P_DEVICE) {
+	if (sdata->vif.type == NL80211_IFTYPE_P2P_DEVICE)
 		rcu_assign_pointer(local->p2p_sdata, sdata);
-	}
 
 	/*
 	 * set_multicast_list will be invoked by the networking core
@@ -997,6 +974,72 @@ static void ieee80211_if_setup(struct ne
 	dev->destructor = free_netdev;
 }
 
+static void ieee80211_wds_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
+					 struct sk_buff *skb)
+{
+	struct ieee80211_local *local = sdata->local;
+	struct ieee80211_rx_status *rx_status;
+	struct ieee802_11_elems elems;
+	struct ieee80211_mgmt *mgmt;
+	struct sta_info *sta;
+	size_t baselen;
+	u32 rates = 0;
+	u16 stype;
+	bool new = false;
+	enum ieee80211_band band = local->hw.conf.channel->band;
+	struct ieee80211_supported_band *sband = local->hw.wiphy->bands[band];
+
+	rx_status = IEEE80211_SKB_RXCB(skb);
+	mgmt = (struct ieee80211_mgmt *) skb->data;
+	stype = le16_to_cpu(mgmt->frame_control) & IEEE80211_FCTL_STYPE;
+
+	if (stype != IEEE80211_STYPE_BEACON)
+		return;
+
+	baselen = (u8 *) mgmt->u.probe_resp.variable - (u8 *) mgmt;
+	if (baselen > skb->len)
+		return;
+
+	ieee802_11_parse_elems(mgmt->u.probe_resp.variable,
+			       skb->len - baselen, &elems);
+
+	rates = ieee80211_sta_get_rates(local, &elems, band, NULL);
+
+	rcu_read_lock();
+
+	sta = sta_info_get(sdata, sdata->u.wds.remote_addr);
+
+	if (!sta) {
+		rcu_read_unlock();
+		sta = sta_info_alloc(sdata, sdata->u.wds.remote_addr,
+				     GFP_KERNEL);
+		if (!sta)
+			return;
+
+		new = true;
+	}
+
+	sta->last_rx = jiffies;
+	sta->sta.supp_rates[local->hw.conf.channel->band] = rates;
+
+	if (elems.ht_cap_elem)
+		ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
+				elems.ht_cap_elem, &sta->sta.ht_cap);
+
+	if (elems.wmm_param)
+		set_sta_flag(sta, WLAN_STA_WME);
+
+	if (new) {
+		sta_info_pre_move_state(sta, IEEE80211_STA_AUTH);
+		sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC);
+		sta_info_pre_move_state(sta, IEEE80211_STA_AUTHORIZED);
+		rate_control_rate_init(sta);
+		sta_info_insert_rcu(sta);
+	}
+
+	rcu_read_unlock();
+}
+
 static void ieee80211_iface_work(struct work_struct *work)
 {
 	struct ieee80211_sub_if_data *sdata =
@@ -1101,6 +1144,9 @@ static void ieee80211_iface_work(struct 
 				break;
 			ieee80211_mesh_rx_queued_mgmt(sdata, skb);
 			break;
+		case NL80211_IFTYPE_WDS:
+			ieee80211_wds_rx_queued_mgmt(sdata, skb);
+			break;
 		default:
 			WARN(1, "frame for unexpected interface type");
 			break;
--- a/net/mac80211/rx.c
+++ b/net/mac80211/rx.c
@@ -2279,6 +2279,7 @@ ieee80211_rx_h_action(struct ieee80211_r
 		    sdata->vif.type != NL80211_IFTYPE_MESH_POINT &&
 		    sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
 		    sdata->vif.type != NL80211_IFTYPE_AP &&
+		    sdata->vif.type != NL80211_IFTYPE_WDS &&
 		    sdata->vif.type != NL80211_IFTYPE_ADHOC)
 			break;
 
@@ -2496,14 +2497,15 @@ ieee80211_rx_h_mgmt(struct ieee80211_rx_
 
 	if (!ieee80211_vif_is_mesh(&sdata->vif) &&
 	    sdata->vif.type != NL80211_IFTYPE_ADHOC &&
-	    sdata->vif.type != NL80211_IFTYPE_STATION)
+	    sdata->vif.type != NL80211_IFTYPE_STATION &&
+	    sdata->vif.type != NL80211_IFTYPE_WDS)
 		return RX_DROP_MONITOR;
 
 	switch (stype) {
 	case cpu_to_le16(IEEE80211_STYPE_AUTH):
 	case cpu_to_le16(IEEE80211_STYPE_BEACON):
 	case cpu_to_le16(IEEE80211_STYPE_PROBE_RESP):
-		/* process for all: mesh, mlme, ibss */
+		/* process for all: mesh, mlme, ibss, wds */
 		break;
 	case cpu_to_le16(IEEE80211_STYPE_ASSOC_RESP):
 	case cpu_to_le16(IEEE80211_STYPE_REASSOC_RESP):
@@ -2827,10 +2829,16 @@ static int prepare_for_handlers(struct i
 		}
 		break;
 	case NL80211_IFTYPE_WDS:
-		if (bssid || !ieee80211_is_data(hdr->frame_control))
-			return 0;
 		if (!ether_addr_equal(sdata->u.wds.remote_addr, hdr->addr2))
 			return 0;
+
+		if (ieee80211_is_data(hdr->frame_control) ||
+		    ieee80211_is_action(hdr->frame_control)) {
+			if (compare_ether_addr(sdata->vif.addr, hdr->addr1))
+				return 0;
+		} else if (!ieee80211_is_beacon(hdr->frame_control))
+			return 0;
+
 		break;
 	case NL80211_IFTYPE_P2P_DEVICE:
 		if (!ieee80211_is_public_action(hdr, skb->len) &&
--- a/net/mac80211/sta_info.h
+++ b/net/mac80211/sta_info.h
@@ -32,7 +32,6 @@
  * @WLAN_STA_SHORT_PREAMBLE: Station is capable of receiving short-preamble
  *	frames.
  * @WLAN_STA_WME: Station is a QoS-STA.
- * @WLAN_STA_WDS: Station is one of our WDS peers.
  * @WLAN_STA_CLEAR_PS_FILT: Clear PS filter in hardware (using the
  *	IEEE80211_TX_CTL_CLEAR_PS_FILT control flag) when the next
  *	frame to this station is transmitted.
@@ -64,7 +63,6 @@ enum ieee80211_sta_info_flags {
 	WLAN_STA_AUTHORIZED,
 	WLAN_STA_SHORT_PREAMBLE,
 	WLAN_STA_WME,
-	WLAN_STA_WDS,
 	WLAN_STA_CLEAR_PS_FILT,
 	WLAN_STA_MFP,
 	WLAN_STA_BLOCK_BA,
--- a/net/mac80211/status.c
+++ b/net/mac80211/status.c
@@ -517,29 +517,41 @@ void ieee80211_tx_status(struct ieee8021
 
 	if (info->flags & IEEE80211_TX_INTFL_NL80211_FRAME_TX) {
 		u64 cookie = (unsigned long)skb;
+		bool found = false;
+
 		acked = info->flags & IEEE80211_TX_STAT_ACK;
 
-		if (ieee80211_is_nullfunc(hdr->frame_control) ||
-		    ieee80211_is_qos_nullfunc(hdr->frame_control)) {
-			cfg80211_probe_status(skb->dev, hdr->addr1,
-					      cookie, acked, GFP_ATOMIC);
-		} else if (skb->dev) {
-			cfg80211_mgmt_tx_status(
-				skb->dev->ieee80211_ptr, cookie, skb->data,
-				skb->len, acked, GFP_ATOMIC);
-		} else {
-			struct ieee80211_sub_if_data *p2p_sdata;
+		rcu_read_lock();
 
-			rcu_read_lock();
+		list_for_each_entry_rcu(sdata, &local->interfaces, list) {
+			if (!sdata->dev)
+				continue;
 
-			p2p_sdata = rcu_dereference(local->p2p_sdata);
-			if (p2p_sdata) {
-				cfg80211_mgmt_tx_status(
-					&p2p_sdata->wdev, cookie, skb->data,
-					skb->len, acked, GFP_ATOMIC);
-			}
-			rcu_read_unlock();
+			if (skb->dev != sdata->dev)
+				continue;
+
+			found = true;
+			break;
 		}
+
+		if (!skb->dev) {
+			sdata = rcu_dereference(local->p2p_sdata);
+			if (sdata)
+				found = true;
+		}
+
+		if (!found)
+			skb->dev = NULL;
+		else if (ieee80211_is_nullfunc(hdr->frame_control) ||
+			 ieee80211_is_qos_nullfunc(hdr->frame_control)) {
+			cfg80211_probe_status(sdata->dev, hdr->addr1,
+					      cookie, acked, GFP_ATOMIC);
+		} else {
+			cfg80211_mgmt_tx_status(&sdata->wdev, cookie, skb->data,
+						skb->len, acked, GFP_ATOMIC);
+		}
+
+		rcu_read_unlock();
 	}
 
 	if (unlikely(info->ack_frame_id)) {
--- a/drivers/net/wireless/p54/main.c
+++ b/drivers/net/wireless/p54/main.c
@@ -139,6 +139,7 @@ static int p54_beacon_format_ie_tim(stru
 static int p54_beacon_update(struct p54_common *priv,
 			struct ieee80211_vif *vif)
 {
+	struct ieee80211_tx_control control = { };
 	struct sk_buff *beacon;
 	int ret;
 
@@ -158,7 +159,7 @@ static int p54_beacon_update(struct p54_
 	 * to cancel the old beacon template by hand, instead the firmware
 	 * will release the previous one through the feedback mechanism.
 	 */
-	p54_tx_80211(priv->hw, NULL, beacon);
+	p54_tx_80211(priv->hw, &control, beacon);
 	priv->tsf_high32 = 0;
 	priv->tsf_low32 = 0;
 
--- a/net/wireless/reg.c
+++ b/net/wireless/reg.c
@@ -352,6 +352,9 @@ static void reg_regdb_search(struct work
 	struct reg_regdb_search_request *request;
 	const struct ieee80211_regdomain *curdom, *regdom;
 	int i, r;
+	bool set_reg = false;
+
+	mutex_lock(&cfg80211_mutex);
 
 	mutex_lock(&reg_regdb_search_mutex);
 	while (!list_empty(&reg_regdb_search_list)) {
@@ -367,9 +370,7 @@ static void reg_regdb_search(struct work
 				r = reg_copy_regd(&regdom, curdom);
 				if (r)
 					break;
-				mutex_lock(&cfg80211_mutex);
-				set_regdom(regdom);
-				mutex_unlock(&cfg80211_mutex);
+				set_reg = true;
 				break;
 			}
 		}
@@ -377,6 +378,11 @@ static void reg_regdb_search(struct work
 		kfree(request);
 	}
 	mutex_unlock(&reg_regdb_search_mutex);
+
+	if (set_reg)
+		set_regdom(regdom);
+
+	mutex_unlock(&cfg80211_mutex);
 }
 
 static DECLARE_WORK(reg_regdb_work, reg_regdb_search);
--- a/drivers/net/wireless/ath/ath9k/recv.c
+++ b/drivers/net/wireless/ath/ath9k/recv.c
@@ -424,8 +424,8 @@ u32 ath_calcrxfilter(struct ath_softc *s
 		rfilt |= ATH9K_RX_FILTER_COMP_BAR;
 
 	if (sc->nvifs > 1 || (sc->rx.rxfilter & FIF_OTHER_BSS)) {
-		/* The following may also be needed for other older chips */
-		if (sc->sc_ah->hw_version.macVersion == AR_SREV_VERSION_9160)
+		/* This is needed for older chips */
+		if (sc->sc_ah->hw_version.macVersion <= AR_SREV_VERSION_9160)
 			rfilt |= ATH9K_RX_FILTER_PROM;
 		rfilt |= ATH9K_RX_FILTER_MCAST_BCAST_ALL;
 	}
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -818,23 +818,71 @@ void ieee80211_sta_process_chanswitch(st
 }
 
 static void ieee80211_handle_pwr_constr(struct ieee80211_sub_if_data *sdata,
-					u16 capab_info, u8 *pwr_constr_elem,
-					u8 pwr_constr_elem_len)
+					struct ieee80211_channel *channel,
+					const u8 *country_ie, u8 country_ie_len,
+					const u8 *pwr_constr_elem)
 {
-	struct ieee80211_conf *conf = &sdata->local->hw.conf;
+	struct ieee80211_country_ie_triplet *triplet;
+	int chan = ieee80211_frequency_to_channel(channel->center_freq);
+	int i, chan_pwr, chan_increment, new_ap_level;
+	bool have_chan_pwr = false;
 
-	if (!(capab_info & WLAN_CAPABILITY_SPECTRUM_MGMT))
+	/* Invalid IE */
+	if (country_ie_len % 2 || country_ie_len < IEEE80211_COUNTRY_IE_MIN_LEN)
 		return;
 
-	/* Power constraint IE length should be 1 octet */
-	if (pwr_constr_elem_len != 1)
-		return;
+	triplet = (void *)(country_ie + 3);
+	country_ie_len -= 3;
 
-	if ((*pwr_constr_elem <= conf->channel->max_reg_power) &&
-	    (*pwr_constr_elem != sdata->local->power_constr_level)) {
-		sdata->local->power_constr_level = *pwr_constr_elem;
-		ieee80211_hw_config(sdata->local, 0);
+	switch (channel->band) {
+	default:
+		WARN_ON_ONCE(1);
+		/* fall through */
+	case IEEE80211_BAND_2GHZ:
+	case IEEE80211_BAND_60GHZ:
+		chan_increment = 1;
+		break;
+	case IEEE80211_BAND_5GHZ:
+		chan_increment = 4;
+		break;
 	}
+
+	/* find channel */
+	while (country_ie_len >= 3) {
+		u8 first_channel = triplet->chans.first_channel;
+
+		if (first_channel >= IEEE80211_COUNTRY_EXTENSION_ID)
+			goto next;
+
+		for (i = 0; i < triplet->chans.num_channels; i++) {
+			if (first_channel + i * chan_increment == chan) {
+				have_chan_pwr = true;
+				chan_pwr = triplet->chans.max_power;
+				break;
+			}
+		}
+		if (have_chan_pwr)
+			break;
+
+ next:
+		triplet++;
+		country_ie_len -= 3;
+	}
+
+	if (!have_chan_pwr)
+		return;
+
+	new_ap_level = max_t(int, 0, chan_pwr - *pwr_constr_elem);
+
+	if (sdata->local->ap_power_level == new_ap_level)
+		return;
+
+	sdata_info(sdata,
+		   "Limiting TX power to %d (%d - %d) dBm as advertised by %pM\n",
+		   new_ap_level, chan_pwr, *pwr_constr_elem,
+		   sdata->u.mgd.bssid);
+	sdata->local->ap_power_level = new_ap_level;
+	ieee80211_hw_config(sdata->local, 0);
 }
 
 void ieee80211_enable_dyn_ps(struct ieee80211_vif *vif)
@@ -1390,7 +1438,7 @@ static void ieee80211_set_disassoc(struc
 	sta = sta_info_get(sdata, ifmgd->bssid);
 	if (sta) {
 		set_sta_flag(sta, WLAN_STA_BLOCK_BA);
-		ieee80211_sta_tear_down_BA_sessions(sta, tx);
+		ieee80211_sta_tear_down_BA_sessions(sta, false);
 	}
 	mutex_unlock(&local->sta_mtx);
 
@@ -1438,7 +1486,7 @@ static void ieee80211_set_disassoc(struc
 	memset(&ifmgd->ht_capa, 0, sizeof(ifmgd->ht_capa));
 	memset(&ifmgd->ht_capa_mask, 0, sizeof(ifmgd->ht_capa_mask));
 
-	local->power_constr_level = 0;
+	local->ap_power_level = 0;
 
 	del_timer_sync(&local->dynamic_ps_timer);
 	cancel_work_sync(&local->dynamic_ps_enable_work);
@@ -2530,15 +2578,13 @@ static void ieee80211_rx_mgmt_beacon(str
 						  bssid, true);
 	}
 
-	/* Note: country IE parsing is done for us by cfg80211 */
-	if (elems.country_elem) {
-		/* TODO: IBSS also needs this */
-		if (elems.pwr_constr_elem)
-			ieee80211_handle_pwr_constr(sdata,
-				le16_to_cpu(mgmt->u.probe_resp.capab_info),
-				elems.pwr_constr_elem,
-				elems.pwr_constr_elem_len);
-	}
+	if (elems.country_elem && elems.pwr_constr_elem &&
+	    mgmt->u.probe_resp.capab_info &
+				cpu_to_le16(WLAN_CAPABILITY_SPECTRUM_MGMT))
+		ieee80211_handle_pwr_constr(sdata, local->oper_channel,
+					    elems.country_elem,
+					    elems.country_elem_len,
+					    elems.pwr_constr_elem);
 
 	ieee80211_bss_info_change_notify(sdata, changed);
 }
--- a/net/mac80211/sta_info.c
+++ b/net/mac80211/sta_info.c
@@ -674,7 +674,7 @@ int __must_check __sta_info_destroy(stru
 	 * will be sufficient.
 	 */
 	set_sta_flag(sta, WLAN_STA_BLOCK_BA);
-	ieee80211_sta_tear_down_BA_sessions(sta, true);
+	ieee80211_sta_tear_down_BA_sessions(sta, false);
 
 	ret = sta_info_hash_del(local, sta);
 	if (ret)
--- a/drivers/net/wireless/ath/ath5k/phy.c
+++ b/drivers/net/wireless/ath/ath5k/phy.c
@@ -1977,11 +1977,13 @@ ath5k_hw_set_spur_mitigation_filter(stru
 			spur_delta_phase = (spur_offset << 18) / 25;
 			spur_freq_sigma_delta = (spur_delta_phase >> 10);
 			symbol_width = AR5K_SPUR_SYMBOL_WIDTH_BASE_100Hz / 2;
+			break;
 		case AR5K_BWMODE_5MHZ:
 			/* Both sample_freq and chip_freq are 10MHz (?) */
 			spur_delta_phase = (spur_offset << 19) / 25;
 			spur_freq_sigma_delta = (spur_delta_phase >> 10);
 			symbol_width = AR5K_SPUR_SYMBOL_WIDTH_BASE_100Hz / 4;
+			break;
 		default:
 			if (channel->band == IEEE80211_BAND_5GHZ) {
 				/* Both sample_freq and chip_freq are 40MHz */
--- a/net/mac80211/ieee80211_i.h
+++ b/net/mac80211/ieee80211_i.h
@@ -1062,7 +1062,7 @@ struct ieee80211_local {
 	bool disable_dynamic_ps;
 
 	int user_power_level; /* in dBm */
-	int power_constr_level; /* in dBm */
+	int ap_power_level; /* in dBm */
 
 	enum ieee80211_smps_mode smps_mode;
 
@@ -1170,7 +1170,6 @@ struct ieee802_11_elems {
 	u8 prep_len;
 	u8 perr_len;
 	u8 country_elem_len;
-	u8 pwr_constr_elem_len;
 	u8 quiet_elem_len;
 	u8 num_of_quiet_elem;	/* can be more the one */
 	u8 timeout_int_len;
--- a/net/mac80211/util.c
+++ b/net/mac80211/util.c
@@ -792,8 +792,11 @@ u32 ieee802_11_parse_elems_crc(u8 *start
 			elems->country_elem_len = elen;
 			break;
 		case WLAN_EID_PWR_CONSTRAINT:
+			if (elen != 1) {
+				elem_parse_failed = true;
+				break;
+			}
 			elems->pwr_constr_elem = pos;
-			elems->pwr_constr_elem_len = elen;
 			break;
 		case WLAN_EID_TIMEOUT_INTERVAL:
 			elems->timeout_int = pos;
--- a/net/mac80211/main.c
+++ b/net/mac80211/main.c
@@ -154,13 +154,11 @@ int ieee80211_hw_config(struct ieee80211
 
 	if (test_bit(SCAN_SW_SCANNING, &local->scanning) ||
 	    test_bit(SCAN_ONCHANNEL_SCANNING, &local->scanning) ||
-	    test_bit(SCAN_HW_SCANNING, &local->scanning))
+	    test_bit(SCAN_HW_SCANNING, &local->scanning) ||
+	    !local->ap_power_level)
 		power = chan->max_power;
 	else
-		power = local->power_constr_level ?
-			min(chan->max_power,
-				(chan->max_reg_power  - local->power_constr_level)) :
-			chan->max_power;
+		power = min(chan->max_power, local->ap_power_level);
 
 	if (local->user_power_level >= 0)
 		power = min(power, local->user_power_level);