Merge branch 'timers/posix-cpu-timers-for-tglx' of

git://git.kernel.org/pub/scm/linux/kernel/git/frederic/linux-dynticks into timers/core

Frederic sayed: "Most of these patches have been hanging around for
several month now, in -mmotm for a significant chunk. They already
missed a few releases."

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

8 files changed, 207 insertions, 38 deletions

diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c
index 1a89c80e6407..4fdb306e42e0 100644
--- a/net/mac80211/cfg.c
+++ b/net/mac80211/cfg.c
@@ -1057,6 +1057,12 @@ static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev)
 	clear_bit(SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, &sdata->state);
 	ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
 
+	if (sdata->wdev.cac_started) {
+		cancel_delayed_work_sync(&sdata->dfs_cac_timer_work);
+		cfg80211_cac_event(sdata->dev, NL80211_RADAR_CAC_ABORTED,
+				   GFP_KERNEL);
+	}
+
 	drv_stop_ap(sdata->local, sdata);
 
 	/* free all potentially still buffered bcast frames */
diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h
index 158e6eb188d3..9ca8e3278cc0 100644
--- a/net/mac80211/ieee80211_i.h
+++ b/net/mac80211/ieee80211_i.h
@@ -1267,6 +1267,7 @@ void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata);
 void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata);
 void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata,
 				  __le16 fc, bool acked);
+void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata);
 
 /* IBSS code */
 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local);
@@ -1496,10 +1497,11 @@ static inline void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata,
 	ieee80211_tx_skb_tid(sdata, skb, 7);
 }
 
-u32 ieee802_11_parse_elems_crc(u8 *start, size_t len, bool action,
+u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action,
 			       struct ieee802_11_elems *elems,
 			       u64 filter, u32 crc);
-static inline void ieee802_11_parse_elems(u8 *start, size_t len, bool action,
+static inline void ieee802_11_parse_elems(const u8 *start, size_t len,
+					  bool action,
 					  struct ieee802_11_elems *elems)
 {
 	ieee802_11_parse_elems_crc(start, len, action, elems, 0, 0);
diff --git a/net/mac80211/iface.c b/net/mac80211/iface.c
index 60f1ce5e5e52..98d20c0f6fed 100644
--- a/net/mac80211/iface.c
+++ b/net/mac80211/iface.c
@@ -159,9 +159,10 @@ static int ieee80211_change_mtu(struct net_device *dev, int new_mtu)
 	return 0;
 }
 
-static int ieee80211_verify_mac(struct ieee80211_local *local, u8 *addr)
+static int ieee80211_verify_mac(struct ieee80211_sub_if_data *sdata, u8 *addr)
 {
-	struct ieee80211_sub_if_data *sdata;
+	struct ieee80211_local *local = sdata->local;
+	struct ieee80211_sub_if_data *iter;
 	u64 new, mask, tmp;
 	u8 *m;
 	int ret = 0;
@@ -181,11 +182,14 @@ static int ieee80211_verify_mac(struct ieee80211_local *local, u8 *addr)
 
 
 	mutex_lock(&local->iflist_mtx);
-	list_for_each_entry(sdata, &local->interfaces, list) {
-		if (sdata->vif.type == NL80211_IFTYPE_MONITOR)
+	list_for_each_entry(iter, &local->interfaces, list) {
+		if (iter == sdata)
+			continue;
+
+		if (iter->vif.type == NL80211_IFTYPE_MONITOR)
 			continue;
 
-		m = sdata->vif.addr;
+		m = iter->vif.addr;
 		tmp =	((u64)m[0] << 5*8) | ((u64)m[1] << 4*8) |
 			((u64)m[2] << 3*8) | ((u64)m[3] << 2*8) |
 			((u64)m[4] << 1*8) | ((u64)m[5] << 0*8);
@@ -209,7 +213,7 @@ static int ieee80211_change_mac(struct net_device *dev, void *addr)
 	if (ieee80211_sdata_running(sdata))
 		return -EBUSY;
 
-	ret = ieee80211_verify_mac(sdata->local, sa->sa_data);
+	ret = ieee80211_verify_mac(sdata, sa->sa_data);
 	if (ret)
 		return ret;
 
@@ -474,6 +478,9 @@ int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up)
 			master->control_port_protocol;
 		sdata->control_port_no_encrypt =
 			master->control_port_no_encrypt;
+		sdata->vif.cab_queue = master->vif.cab_queue;
+		memcpy(sdata->vif.hw_queue, master->vif.hw_queue,
+		       sizeof(sdata->vif.hw_queue));
 		break;
 		}
 	case NL80211_IFTYPE_AP:
@@ -653,7 +660,11 @@ int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up)
 
 	ieee80211_recalc_ps(local, -1);
 
-	if (dev) {
+	if (sdata->vif.type == NL80211_IFTYPE_MONITOR ||
+	    sdata->vif.type == NL80211_IFTYPE_AP_VLAN) {
+		/* XXX: for AP_VLAN, actually track AP queues */
+		netif_tx_start_all_queues(dev);
+	} else if (dev) {
 		unsigned long flags;
 		int n_acs = IEEE80211_NUM_ACS;
 		int ac;
@@ -1479,7 +1490,17 @@ static void ieee80211_assign_perm_addr(struct ieee80211_local *local,
 			break;
 		}
 
+		/*
+		 * Pick address of existing interface in case user changed
+		 * MAC address manually, default to perm_addr.
+		 */
 		m = local->hw.wiphy->perm_addr;
+		list_for_each_entry(sdata, &local->interfaces, list) {
+			if (sdata->vif.type == NL80211_IFTYPE_MONITOR)
+				continue;
+			m = sdata->vif.addr;
+			break;
+		}
 		start = ((u64)m[0] << 5*8) | ((u64)m[1] << 4*8) |
 			((u64)m[2] << 3*8) | ((u64)m[3] << 2*8) |
 			((u64)m[4] << 1*8) | ((u64)m[5] << 0*8);
@@ -1696,6 +1717,15 @@ void ieee80211_remove_interfaces(struct ieee80211_local *local)
 
 	ASSERT_RTNL();
 
+	/*
+	 * Close all AP_VLAN interfaces first, as otherwise they
+	 * might be closed while the AP interface they belong to
+	 * is closed, causing unregister_netdevice_many() to crash.
+	 */
+	list_for_each_entry(sdata, &local->interfaces, list)
+		if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN)
+			dev_close(sdata->dev);
+
 	mutex_lock(&local->iflist_mtx);
 	list_for_each_entry_safe(sdata, tmp, &local->interfaces, list) {
 		list_del(&sdata->list);
diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
index 29620bfc7a69..741448b30825 100644
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -1015,7 +1015,8 @@ static void ieee80211_chswitch_timer(unsigned long data)
 
 static void
 ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata,
-				 u64 timestamp, struct ieee802_11_elems *elems)
+				 u64 timestamp, struct ieee802_11_elems *elems,
+				 bool beacon)
 {
 	struct ieee80211_local *local = sdata->local;
 	struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
@@ -1032,6 +1033,7 @@ ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata,
 	struct cfg80211_chan_def new_vht_chandef = {};
 	const struct ieee80211_sec_chan_offs_ie *sec_chan_offs;
 	const struct ieee80211_wide_bw_chansw_ie *wide_bw_chansw_ie;
+	const struct ieee80211_ht_operation *ht_oper;
 	int secondary_channel_offset = -1;
 
 	ASSERT_MGD_MTX(ifmgd);
@@ -1048,11 +1050,14 @@ ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata,
 
 	sec_chan_offs = elems->sec_chan_offs;
 	wide_bw_chansw_ie = elems->wide_bw_chansw_ie;
+	ht_oper = elems->ht_operation;
 
 	if (ifmgd->flags & (IEEE80211_STA_DISABLE_HT |
 			    IEEE80211_STA_DISABLE_40MHZ)) {
 		sec_chan_offs = NULL;
 		wide_bw_chansw_ie = NULL;
+		/* only used for bandwidth here */
+		ht_oper = NULL;
 	}
 
 	if (ifmgd->flags & IEEE80211_STA_DISABLE_VHT)
@@ -1094,10 +1099,20 @@ ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata,
 		return;
 	}
 
-	if (sec_chan_offs) {
+	if (!beacon && sec_chan_offs) {
 		secondary_channel_offset = sec_chan_offs->sec_chan_offs;
+	} else if (beacon && ht_oper) {
+		secondary_channel_offset =
+			ht_oper->ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET;
 	} else if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HT)) {
-		/* if HT is enabled and the IE not present, it's still HT */
+		/*
+		 * If it's not a beacon, HT is enabled and the IE not present,
+		 * it's 20 MHz, 802.11-2012 8.5.2.6:
+		 *	This element [the Secondary Channel Offset Element] is
+		 *	present when switching to a 40 MHz channel. It may be
+		 *	present when switching to a 20 MHz channel (in which
+		 *	case the secondary channel offset is set to SCN).
+		 */
 		secondary_channel_offset = IEEE80211_HT_PARAM_CHA_SEC_NONE;
 	}
 
@@ -2507,8 +2522,11 @@ static bool ieee80211_assoc_success(struct ieee80211_sub_if_data *sdata,
 	u16 capab_info, aid;
 	struct ieee802_11_elems elems;
 	struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf;
+	const struct cfg80211_bss_ies *bss_ies = NULL;
+	struct ieee80211_mgd_assoc_data *assoc_data = ifmgd->assoc_data;
 	u32 changed = 0;
 	int err;
+	bool ret;
 
 	/* AssocResp and ReassocResp have identical structure */
 
@@ -2540,21 +2558,86 @@ static bool ieee80211_assoc_success(struct ieee80211_sub_if_data *sdata,
 	ifmgd->aid = aid;
 
 	/*
+	 * Some APs are erroneously not including some information in their
+	 * (re)association response frames. Try to recover by using the data
+	 * from the beacon or probe response. This seems to afflict mobile
+	 * 2G/3G/4G wifi routers, reported models include the "Onda PN51T",
+	 * "Vodafone PocketWiFi 2", "ZTE MF60" and a similar T-Mobile device.
+	 */
+	if ((assoc_data->wmm && !elems.wmm_param) ||
+	    (!(ifmgd->flags & IEEE80211_STA_DISABLE_HT) &&
+	     (!elems.ht_cap_elem || !elems.ht_operation)) ||
+	    (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT) &&
+	     (!elems.vht_cap_elem || !elems.vht_operation))) {
+		const struct cfg80211_bss_ies *ies;
+		struct ieee802_11_elems bss_elems;
+
+		rcu_read_lock();
+		ies = rcu_dereference(cbss->ies);
+		if (ies)
+			bss_ies = kmemdup(ies, sizeof(*ies) + ies->len,
+					  GFP_ATOMIC);
+		rcu_read_unlock();
+		if (!bss_ies)
+			return false;
+
+		ieee802_11_parse_elems(bss_ies->data, bss_ies->len,
+				       false, &bss_elems);
+		if (assoc_data->wmm &&
+		    !elems.wmm_param && bss_elems.wmm_param) {
+			elems.wmm_param = bss_elems.wmm_param;
+			sdata_info(sdata,
+				   "AP bug: WMM param missing from AssocResp\n");
+		}
+
+		/*
+		 * Also check if we requested HT/VHT, otherwise the AP doesn't
+		 * have to include the IEs in the (re)association response.
+		 */
+		if (!elems.ht_cap_elem && bss_elems.ht_cap_elem &&
+		    !(ifmgd->flags & IEEE80211_STA_DISABLE_HT)) {
+			elems.ht_cap_elem = bss_elems.ht_cap_elem;
+			sdata_info(sdata,
+				   "AP bug: HT capability missing from AssocResp\n");
+		}
+		if (!elems.ht_operation && bss_elems.ht_operation &&
+		    !(ifmgd->flags & IEEE80211_STA_DISABLE_HT)) {
+			elems.ht_operation = bss_elems.ht_operation;
+			sdata_info(sdata,
+				   "AP bug: HT operation missing from AssocResp\n");
+		}
+		if (!elems.vht_cap_elem && bss_elems.vht_cap_elem &&
+		    !(ifmgd->flags & IEEE80211_STA_DISABLE_VHT)) {
+			elems.vht_cap_elem = bss_elems.vht_cap_elem;
+			sdata_info(sdata,
+				   "AP bug: VHT capa missing from AssocResp\n");
+		}
+		if (!elems.vht_operation && bss_elems.vht_operation &&
+		    !(ifmgd->flags & IEEE80211_STA_DISABLE_VHT)) {
+			elems.vht_operation = bss_elems.vht_operation;
+			sdata_info(sdata,
+				   "AP bug: VHT operation missing from AssocResp\n");
+		}
+	}
+
+	/*
 	 * We previously checked these in the beacon/probe response, so
 	 * they should be present here. This is just a safety net.
 	 */
 	if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HT) &&
 	    (!elems.wmm_param || !elems.ht_cap_elem || !elems.ht_operation)) {
 		sdata_info(sdata,
-			   "HT AP is missing WMM params or HT capability/operation in AssocResp\n");
-		return false;
+			   "HT AP is missing WMM params or HT capability/operation\n");
+		ret = false;
+		goto out;
 	}
 
 	if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT) &&
 	    (!elems.vht_cap_elem || !elems.vht_operation)) {
 		sdata_info(sdata,
-			   "VHT AP is missing VHT capability/operation in AssocResp\n");
-		return false;
+			   "VHT AP is missing VHT capability/operation\n");
+		ret = false;
+		goto out;
 	}
 
 	mutex_lock(&sdata->local->sta_mtx);
@@ -2565,7 +2648,8 @@ static bool ieee80211_assoc_success(struct ieee80211_sub_if_data *sdata,
 	sta = sta_info_get(sdata, cbss->bssid);
 	if (WARN_ON(!sta)) {
 		mutex_unlock(&sdata->local->sta_mtx);
-		return false;
+		ret = false;
+		goto out;
 	}
 
 	sband = local->hw.wiphy->bands[ieee80211_get_sdata_band(sdata)];
@@ -2618,7 +2702,8 @@ static bool ieee80211_assoc_success(struct ieee80211_sub_if_data *sdata,
 			   sta->sta.addr);
 		WARN_ON(__sta_info_destroy(sta));
 		mutex_unlock(&sdata->local->sta_mtx);
-		return false;
+		ret = false;
+		goto out;
 	}
 
 	mutex_unlock(&sdata->local->sta_mtx);
@@ -2658,7 +2743,10 @@ static bool ieee80211_assoc_success(struct ieee80211_sub_if_data *sdata,
 	ieee80211_sta_rx_notify(sdata, (struct ieee80211_hdr *)mgmt);
 	ieee80211_sta_reset_beacon_monitor(sdata);
 
-	return true;
+	ret = true;
+ out:
+	kfree(bss_ies);
+	return ret;
 }
 
 static enum rx_mgmt_action __must_check
@@ -2796,7 +2884,8 @@ static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata,
 		mutex_unlock(&local->iflist_mtx);
 	}
 
-	ieee80211_sta_process_chanswitch(sdata, rx_status->mactime, elems);
+	ieee80211_sta_process_chanswitch(sdata, rx_status->mactime,
+					 elems, true);
 
 }
 
@@ -3210,7 +3299,7 @@ void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
 
 			ieee80211_sta_process_chanswitch(sdata,
 							 rx_status->mactime,
-							 &elems);
+							 &elems, false);
 		} else if (mgmt->u.action.category == WLAN_CATEGORY_PUBLIC) {
 			ies_len = skb->len -
 				  offsetof(struct ieee80211_mgmt,
@@ -3232,7 +3321,7 @@ void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
 
 			ieee80211_sta_process_chanswitch(sdata,
 							 rx_status->mactime,
-							 &elems);
+							 &elems, false);
 		}
 		break;
 	}
@@ -3305,10 +3394,6 @@ static int ieee80211_probe_auth(struct ieee80211_sub_if_data *sdata)
 	if (WARN_ON_ONCE(!auth_data))
 		return -EINVAL;
 
-	if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS)
-		tx_flags = IEEE80211_TX_CTL_REQ_TX_STATUS |
-			   IEEE80211_TX_INTFL_MLME_CONN_TX;
-
 	auth_data->tries++;
 
 	if (auth_data->tries > IEEE80211_AUTH_MAX_TRIES) {
@@ -3342,6 +3427,10 @@ static int ieee80211_probe_auth(struct ieee80211_sub_if_data *sdata)
 			auth_data->expected_transaction = trans;
 		}
 
+		if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS)
+			tx_flags = IEEE80211_TX_CTL_REQ_TX_STATUS |
+				   IEEE80211_TX_INTFL_MLME_CONN_TX;
+
 		ieee80211_send_auth(sdata, trans, auth_data->algorithm, status,
 				    auth_data->data, auth_data->data_len,
 				    auth_data->bss->bssid,
@@ -3365,12 +3454,12 @@ static int ieee80211_probe_auth(struct ieee80211_sub_if_data *sdata)
 		 * will not answer to direct packet in unassociated state.
 		 */
 		ieee80211_send_probe_req(sdata, NULL, ssidie + 2, ssidie[1],
-					 NULL, 0, (u32) -1, true, tx_flags,
+					 NULL, 0, (u32) -1, true, 0,
 					 auth_data->bss->channel, false);
 		rcu_read_unlock();
 	}
 
-	if (!(local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS)) {
+	if (tx_flags == 0) {
 		auth_data->timeout = jiffies + IEEE80211_AUTH_TIMEOUT;
 		ifmgd->auth_data->timeout_started = true;
 		run_again(ifmgd, auth_data->timeout);
@@ -3623,6 +3712,31 @@ static void ieee80211_restart_sta_timer(struct ieee80211_sub_if_data *sdata)
 	}
 }
 
+#ifdef CONFIG_PM
+void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata)
+{
+	struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
+
+	mutex_lock(&ifmgd->mtx);
+	if (!ifmgd->associated) {
+		mutex_unlock(&ifmgd->mtx);
+		return;
+	}
+
+	if (sdata->flags & IEEE80211_SDATA_DISCONNECT_RESUME) {
+		sdata->flags &= ~IEEE80211_SDATA_DISCONNECT_RESUME;
+		mlme_dbg(sdata, "driver requested disconnect after resume\n");
+		ieee80211_sta_connection_lost(sdata,
+					      ifmgd->associated->bssid,
+					      WLAN_REASON_UNSPECIFIED,
+					      true);
+		mutex_unlock(&ifmgd->mtx);
+		return;
+	}
+	mutex_unlock(&ifmgd->mtx);
+}
+#endif
+
 /* interface setup */
 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata)
 {
@@ -4329,7 +4443,7 @@ int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
 	struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
 	u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
 	bool tx = !req->local_state_change;
-	bool sent_frame = false;
+	bool report_frame = false;
 
 	mutex_lock(&ifmgd->mtx);
 
@@ -4346,7 +4460,7 @@ int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
 		ieee80211_destroy_auth_data(sdata, false);
 		mutex_unlock(&ifmgd->mtx);
 
-		sent_frame = tx;
+		report_frame = true;
 		goto out;
 	}
 
@@ -4354,12 +4468,12 @@ int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
 	    ether_addr_equal(ifmgd->associated->bssid, req->bssid)) {
 		ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH,
 				       req->reason_code, tx, frame_buf);
-		sent_frame = tx;
+		report_frame = true;
 	}
 	mutex_unlock(&ifmgd->mtx);
 
  out:
-	if (sent_frame)
+	if (report_frame)
 		__cfg80211_send_deauth(sdata->dev, frame_buf,
 				       IEEE80211_DEAUTH_FRAME_LEN);
 
diff --git a/net/mac80211/rate.c b/net/mac80211/rate.c
index 0d51877efdb7..a02bef35b134 100644
--- a/net/mac80211/rate.c
+++ b/net/mac80211/rate.c
@@ -615,7 +615,7 @@ static void rate_control_apply_mask(struct ieee80211_sub_if_data *sdata,
 		if (rates[i].idx < 0)
 			break;
 
-		rate_idx_match_mask(&rates[i], sband, mask, chan_width,
+		rate_idx_match_mask(&rates[i], sband, chan_width, mask,
 				    mcs_mask);
 	}
 }
@@ -688,8 +688,15 @@ int rate_control_set_rates(struct ieee80211_hw *hw,
 			   struct ieee80211_sta *pubsta,
 			   struct ieee80211_sta_rates *rates)
 {
-	struct ieee80211_sta_rates *old = rcu_dereference(pubsta->rates);
+	struct ieee80211_sta_rates *old;
 
+	/*
+	 * mac80211 guarantees that this function will not be called
+	 * concurrently, so the following RCU access is safe, even without
+	 * extra locking. This can not be checked easily, so we just set
+	 * the condition to true.
+	 */
+	old = rcu_dereference_protected(pubsta->rates, true);
 	rcu_assign_pointer(pubsta->rates, rates);
 	if (old)
 		kfree_rcu(old, rcu_head);
diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c
index c8447af76ead..8e2952620256 100644
--- a/net/mac80211/rx.c
+++ b/net/mac80211/rx.c
@@ -3036,6 +3036,9 @@ static int prepare_for_handlers(struct ieee80211_rx_data *rx,
 			 * and location updates. Note that mac80211
 			 * itself never looks at these frames.
 			 */
+			if (!multicast &&
+			    !ether_addr_equal(sdata->vif.addr, hdr->addr1))
+				return 0;
 			if (ieee80211_is_public_action(hdr, skb->len))
 				return 1;
 			if (!ieee80211_is_beacon(hdr->frame_control))
diff --git a/net/mac80211/tkip.c b/net/mac80211/tkip.c
index 3ed801d90f1e..124b1fdc20d0 100644
--- a/net/mac80211/tkip.c
+++ b/net/mac80211/tkip.c
@@ -208,10 +208,10 @@ void ieee80211_get_tkip_p2k(struct ieee80211_key_conf *keyconf,
 	u32 iv32 = get_unaligned_le32(&data[4]);
 	u16 iv16 = data[2] | (data[0] << 8);
 
-	spin_lock_bh(&key->u.tkip.txlock);
+	spin_lock(&key->u.tkip.txlock);
 	ieee80211_compute_tkip_p1k(key, iv32);
 	tkip_mixing_phase2(tk, ctx, iv16, p2k);
-	spin_unlock_bh(&key->u.tkip.txlock);
+	spin_unlock(&key->u.tkip.txlock);
 }
 EXPORT_SYMBOL(ieee80211_get_tkip_p2k);
 
diff --git a/net/mac80211/util.c b/net/mac80211/util.c
index 3f87fa468b1f..72e6292955bb 100644
--- a/net/mac80211/util.c
+++ b/net/mac80211/util.c
@@ -661,12 +661,12 @@ void ieee80211_queue_delayed_work(struct ieee80211_hw *hw,
 }
 EXPORT_SYMBOL(ieee80211_queue_delayed_work);
 
-u32 ieee802_11_parse_elems_crc(u8 *start, size_t len, bool action,
+u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action,
 			       struct ieee802_11_elems *elems,
 			       u64 filter, u32 crc)
 {
 	size_t left = len;
-	u8 *pos = start;
+	const u8 *pos = start;
 	bool calc_crc = filter != 0;
 	DECLARE_BITMAP(seen_elems, 256);
 	const u8 *ie;
@@ -1740,6 +1740,13 @@ int ieee80211_reconfig(struct ieee80211_local *local)
 	mb();
 	local->resuming = false;
 
+	list_for_each_entry(sdata, &local->interfaces, list) {
+		if (!ieee80211_sdata_running(sdata))
+			continue;
+		if (sdata->vif.type == NL80211_IFTYPE_STATION)
+			ieee80211_sta_restart(sdata);
+	}
+
 	mod_timer(&local->sta_cleanup, jiffies + 1);
 #else
 	WARN_ON(1);