Merge commit 'v2.6.30-rc6' into tracing/core

Merge reason: we were on an -rc4 base, sync up to -rc6

Signed-off-by: Ingo Molnar <mingo@elte.hu>

22 files changed, 138 insertions, 100 deletions

diff --git a/net/Kconfig b/net/Kconfig
index ce77db4fc..c19f549c 100644
--- a/net/Kconfig
+++ b/net/Kconfig
@@ -119,12 +119,6 @@ menuconfig NETFILTER
 	  <file:Documentation/Changes> under "iptables" for the location of
 	  these packages.
 
-	  Make sure to say N to "Fast switching" below if you intend to say Y
-	  here, as Fast switching currently bypasses netfilter.
-
-	  Chances are that you should say Y here if you compile a kernel which
-	  will run as a router and N for regular hosts. If unsure, say N.
-
 if NETFILTER
 
 config NETFILTER_DEBUG
diff --git a/net/bluetooth/hci_conn.c b/net/bluetooth/hci_conn.c
index 61309b2..fa47d5d 100644
--- a/net/bluetooth/hci_conn.c
+++ b/net/bluetooth/hci_conn.c
@@ -171,10 +171,8 @@ static void hci_conn_timeout(unsigned long arg)
 	switch (conn->state) {
 	case BT_CONNECT:
 	case BT_CONNECT2:
-		if (conn->type == ACL_LINK)
+		if (conn->type == ACL_LINK && conn->out)
 			hci_acl_connect_cancel(conn);
-		else
-			hci_acl_disconn(conn, 0x13);
 		break;
 	case BT_CONFIG:
 	case BT_CONNECTED:
@@ -292,6 +290,8 @@ int hci_conn_del(struct hci_conn *conn)
 
 	hci_conn_del_sysfs(conn);
 
+	hci_dev_put(hdev);
+
 	return 0;
 }
 
diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c
index 4e7cb88..184ba0a 100644
--- a/net/bluetooth/hci_event.c
+++ b/net/bluetooth/hci_event.c
@@ -1493,7 +1493,7 @@ static inline void hci_pin_code_request_evt(struct hci_dev *hdev, struct sk_buff
 	hci_dev_lock(hdev);
 
 	conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
-	if (conn) {
+	if (conn && conn->state == BT_CONNECTED) {
 		hci_conn_hold(conn);
 		conn->disc_timeout = HCI_PAIRING_TIMEOUT;
 		hci_conn_put(conn);
diff --git a/net/bluetooth/hci_sysfs.c b/net/bluetooth/hci_sysfs.c
index 582d8877..4cc3624 100644
--- a/net/bluetooth/hci_sysfs.c
+++ b/net/bluetooth/hci_sysfs.c
@@ -88,14 +88,19 @@ static struct device_type bt_link = {
 static void add_conn(struct work_struct *work)
 {
 	struct hci_conn *conn = container_of(work, struct hci_conn, work_add);
+	struct hci_dev *hdev = conn->hdev;
 
 	/* ensure previous del is complete */
 	flush_work(&conn->work_del);
 
+	dev_set_name(&conn->dev, "%s:%d", hdev->name, conn->handle);
+
 	if (device_add(&conn->dev) < 0) {
 		BT_ERR("Failed to register connection device");
 		return;
 	}
+
+	hci_dev_hold(hdev);
 }
 
 /*
@@ -131,6 +136,7 @@ static void del_conn(struct work_struct *work)
 
 	device_del(&conn->dev);
 	put_device(&conn->dev);
+
 	hci_dev_put(hdev);
 }
 
@@ -154,12 +160,8 @@ void hci_conn_init_sysfs(struct hci_conn *conn)
 
 void hci_conn_add_sysfs(struct hci_conn *conn)
 {
-	struct hci_dev *hdev = conn->hdev;
-
 	BT_DBG("conn %p", conn);
 
-	dev_set_name(&conn->dev, "%s:%d", hdev->name, conn->handle);
-
 	queue_work(bt_workq, &conn->work_add);
 }
 
diff --git a/net/core/skbuff.c b/net/core/skbuff.c
index f8bcc06..c4906bb 100644
--- a/net/core/skbuff.c
+++ b/net/core/skbuff.c
@@ -502,7 +502,9 @@ int skb_recycle_check(struct sk_buff *skb, int skb_size)
 	shinfo->gso_segs = 0;
 	shinfo->gso_type = 0;
 	shinfo->ip6_frag_id = 0;
+	shinfo->tx_flags.flags = 0;
 	shinfo->frag_list = NULL;
+	memset(&shinfo->hwtstamps, 0, sizeof(shinfo->hwtstamps));
 
 	memset(skb, 0, offsetof(struct sk_buff, tail));
 	skb->data = skb->head + NET_SKB_PAD;
diff --git a/net/ipv4/Kconfig b/net/ipv4/Kconfig
index b2cf91e..9d26a3d 100644
--- a/net/ipv4/Kconfig
+++ b/net/ipv4/Kconfig
@@ -407,7 +407,7 @@ config INET_XFRM_MODE_BEET
 	  If unsure, say Y.
 
 config INET_LRO
-	tristate "Large Receive Offload (ipv4/tcp)"
+	bool "Large Receive Offload (ipv4/tcp)"
 
 	---help---
 	  Support for Large Receive Offload (ipv4/tcp).
diff --git a/net/ipv6/netfilter/ip6t_ipv6header.c b/net/ipv6/netfilter/ip6t_ipv6header.c
index 14e6724..91490ad 100644
--- a/net/ipv6/netfilter/ip6t_ipv6header.c
+++ b/net/ipv6/netfilter/ip6t_ipv6header.c
@@ -50,14 +50,14 @@ ipv6header_mt6(const struct sk_buff *skb, const struct xt_match_param *par)
 		struct ipv6_opt_hdr _hdr;
 		int hdrlen;
 
-		/* Is there enough space for the next ext header? */
-		if (len < (int)sizeof(struct ipv6_opt_hdr))
-			return false;
 		/* No more exthdr -> evaluate */
 		if (nexthdr == NEXTHDR_NONE) {
 			temp |= MASK_NONE;
 			break;
 		}
+		/* Is there enough space for the next ext header? */
+		if (len < (int)sizeof(struct ipv6_opt_hdr))
+			return false;
 		/* ESP -> evaluate */
 		if (nexthdr == NEXTHDR_ESP) {
 			temp |= MASK_ESP;
diff --git a/net/mac80211/rc80211_minstrel.c b/net/mac80211/rc80211_minstrel.c
index 3824990..d9233ec 100644
--- a/net/mac80211/rc80211_minstrel.c
+++ b/net/mac80211/rc80211_minstrel.c
@@ -476,8 +476,8 @@ minstrel_alloc_sta(void *priv, struct ieee80211_sta *sta, gfp_t gfp)
 		return NULL;
 
 	for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
-		sband = hw->wiphy->bands[hw->conf.channel->band];
-		if (sband->n_bitrates > max_rates)
+		sband = hw->wiphy->bands[i];
+		if (sband && sband->n_bitrates > max_rates)
 			max_rates = sband->n_bitrates;
 	}
 
diff --git a/net/mac80211/rc80211_pid_algo.c b/net/mac80211/rc80211_pid_algo.c
index b16801c..8bef9a1 100644
--- a/net/mac80211/rc80211_pid_algo.c
+++ b/net/mac80211/rc80211_pid_algo.c
@@ -317,13 +317,44 @@ rate_control_pid_rate_init(void *priv, struct ieee80211_supported_band *sband,
 			   struct ieee80211_sta *sta, void *priv_sta)
 {
 	struct rc_pid_sta_info *spinfo = priv_sta;
+	struct rc_pid_info *pinfo = priv;
+	struct rc_pid_rateinfo *rinfo = pinfo->rinfo;
 	struct sta_info *si;
+	int i, j, tmp;
+	bool s;
 
 	/* TODO: This routine should consider using RSSI from previous packets
 	 * as we need to have IEEE 802.1X auth succeed immediately after assoc..
 	 * Until that method is implemented, we will use the lowest supported
 	 * rate as a workaround. */
 
+	/* Sort the rates. This is optimized for the most common case (i.e.
+	 * almost-sorted CCK+OFDM rates). Kind of bubble-sort with reversed
+	 * mapping too. */
+	for (i = 0; i < sband->n_bitrates; i++) {
+		rinfo[i].index = i;
+		rinfo[i].rev_index = i;
+		if (RC_PID_FAST_START)
+			rinfo[i].diff = 0;
+		else
+			rinfo[i].diff = i * pinfo->norm_offset;
+	}
+	for (i = 1; i < sband->n_bitrates; i++) {
+		s = 0;
+		for (j = 0; j < sband->n_bitrates - i; j++)
+			if (unlikely(sband->bitrates[rinfo[j].index].bitrate >
+				     sband->bitrates[rinfo[j + 1].index].bitrate)) {
+				tmp = rinfo[j].index;
+				rinfo[j].index = rinfo[j + 1].index;
+				rinfo[j + 1].index = tmp;
+				rinfo[rinfo[j].index].rev_index = j;
+				rinfo[rinfo[j + 1].index].rev_index = j + 1;
+				s = 1;
+			}
+		if (!s)
+			break;
+	}
+
 	spinfo->txrate_idx = rate_lowest_index(sband, sta);
 	/* HACK */
 	si = container_of(sta, struct sta_info, sta);
@@ -336,21 +367,22 @@ static void *rate_control_pid_alloc(struct ieee80211_hw *hw,
 	struct rc_pid_info *pinfo;
 	struct rc_pid_rateinfo *rinfo;
 	struct ieee80211_supported_band *sband;
-	int i, j, tmp;
-	bool s;
+	int i, max_rates = 0;
 #ifdef CONFIG_MAC80211_DEBUGFS
 	struct rc_pid_debugfs_entries *de;
 #endif
 
-	sband = hw->wiphy->bands[hw->conf.channel->band];
-
 	pinfo = kmalloc(sizeof(*pinfo), GFP_ATOMIC);
 	if (!pinfo)
 		return NULL;
 
-	/* We can safely assume that sband won't change unless we get
-	 * reinitialized. */
-	rinfo = kmalloc(sizeof(*rinfo) * sband->n_bitrates, GFP_ATOMIC);
+	for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
+		sband = hw->wiphy->bands[i];
+		if (sband && sband->n_bitrates > max_rates)
+			max_rates = sband->n_bitrates;
+	}
+
+	rinfo = kmalloc(sizeof(*rinfo) * max_rates, GFP_ATOMIC);
 	if (!rinfo) {
 		kfree(pinfo);
 		return NULL;
@@ -368,33 +400,6 @@ static void *rate_control_pid_alloc(struct ieee80211_hw *hw,
 	pinfo->rinfo = rinfo;
 	pinfo->oldrate = 0;
 
-	/* Sort the rates. This is optimized for the most common case (i.e.
-	 * almost-sorted CCK+OFDM rates). Kind of bubble-sort with reversed
-	 * mapping too. */
-	for (i = 0; i < sband->n_bitrates; i++) {
-		rinfo[i].index = i;
-		rinfo[i].rev_index = i;
-		if (RC_PID_FAST_START)
-			rinfo[i].diff = 0;
-		else
-			rinfo[i].diff = i * pinfo->norm_offset;
-	}
-	for (i = 1; i < sband->n_bitrates; i++) {
-		s = 0;
-		for (j = 0; j < sband->n_bitrates - i; j++)
-			if (unlikely(sband->bitrates[rinfo[j].index].bitrate >
-				     sband->bitrates[rinfo[j + 1].index].bitrate)) {
-				tmp = rinfo[j].index;
-				rinfo[j].index = rinfo[j + 1].index;
-				rinfo[j + 1].index = tmp;
-				rinfo[rinfo[j].index].rev_index = j;
-				rinfo[rinfo[j + 1].index].rev_index = j + 1;
-				s = 1;
-			}
-		if (!s)
-			break;
-	}
-
 #ifdef CONFIG_MAC80211_DEBUGFS
 	de = &pinfo->dentries;
 	de->target = debugfs_create_u32("target_pf", S_IRUSR | S_IWUSR,
diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c
index 3fb04a8..6365626 100644
--- a/net/mac80211/tx.c
+++ b/net/mac80211/tx.c
@@ -772,7 +772,7 @@ ieee80211_tx_h_fragment(struct ieee80211_tx_data *tx)
 	hdrlen = ieee80211_hdrlen(hdr->frame_control);
 
 	/* internal error, why is TX_FRAGMENTED set? */
-	if (WARN_ON(skb->len <= frag_threshold))
+	if (WARN_ON(skb->len + FCS_LEN <= frag_threshold))
 		return TX_DROP;
 
 	/*
diff --git a/net/netfilter/ipvs/ip_vs_conn.c b/net/netfilter/ipvs/ip_vs_conn.c
index 60aba45..77bfdfe 100644
--- a/net/netfilter/ipvs/ip_vs_conn.c
+++ b/net/netfilter/ipvs/ip_vs_conn.c
@@ -260,7 +260,10 @@ struct ip_vs_conn *ip_vs_ct_in_get
 	list_for_each_entry(cp, &ip_vs_conn_tab[hash], c_list) {
 		if (cp->af == af &&
 		    ip_vs_addr_equal(af, s_addr, &cp->caddr) &&
-		    ip_vs_addr_equal(af, d_addr, &cp->vaddr) &&
+		    /* protocol should only be IPPROTO_IP if
+		     * d_addr is a fwmark */
+		    ip_vs_addr_equal(protocol == IPPROTO_IP ? AF_UNSPEC : af,
+		                     d_addr, &cp->vaddr) &&
 		    s_port == cp->cport && d_port == cp->vport &&
 		    cp->flags & IP_VS_CONN_F_TEMPLATE &&
 		    protocol == cp->protocol) {
@@ -698,7 +701,9 @@ ip_vs_conn_new(int af, int proto, const union nf_inet_addr *caddr, __be16 cport,
 	cp->cport	   = cport;
 	ip_vs_addr_copy(af, &cp->vaddr, vaddr);
 	cp->vport	   = vport;
-	ip_vs_addr_copy(af, &cp->daddr, daddr);
+	/* proto should only be IPPROTO_IP if d_addr is a fwmark */
+	ip_vs_addr_copy(proto == IPPROTO_IP ? AF_UNSPEC : af,
+			&cp->daddr, daddr);
 	cp->dport          = dport;
 	cp->flags	   = flags;
 	spin_lock_init(&cp->lock);
diff --git a/net/netfilter/ipvs/ip_vs_core.c b/net/netfilter/ipvs/ip_vs_core.c
index cb3e031..8dddb17 100644
--- a/net/netfilter/ipvs/ip_vs_core.c
+++ b/net/netfilter/ipvs/ip_vs_core.c
@@ -278,7 +278,7 @@ ip_vs_sched_persist(struct ip_vs_service *svc,
 		 */
 		if (svc->fwmark) {
 			union nf_inet_addr fwmark = {
-				.all = { 0, 0, 0, htonl(svc->fwmark) }
+				.ip = htonl(svc->fwmark)
 			};
 
 			ct = ip_vs_ct_in_get(svc->af, IPPROTO_IP, &snet, 0,
@@ -306,7 +306,7 @@ ip_vs_sched_persist(struct ip_vs_service *svc,
 			 */
 			if (svc->fwmark) {
 				union nf_inet_addr fwmark = {
-					.all = { 0, 0, 0, htonl(svc->fwmark) }
+					.ip = htonl(svc->fwmark)
 				};
 
 				ct = ip_vs_conn_new(svc->af, IPPROTO_IP,
diff --git a/net/netfilter/nf_conntrack_netlink.c b/net/netfilter/nf_conntrack_netlink.c
index f13fc57..c523f0b 100644
--- a/net/netfilter/nf_conntrack_netlink.c
+++ b/net/netfilter/nf_conntrack_netlink.c
@@ -1186,28 +1186,6 @@ ctnetlink_change_conntrack(struct nf_conn *ct, struct nlattr *cda[])
 	return 0;
 }
 
-static inline void
-ctnetlink_event_report(struct nf_conn *ct, u32 pid, int report)
-{
-	unsigned int events = 0;
-
-	if (test_bit(IPS_EXPECTED_BIT, &ct->status))
-		events |= IPCT_RELATED;
-	else
-		events |= IPCT_NEW;
-
-	nf_conntrack_event_report(IPCT_STATUS |
-				  IPCT_HELPER |
-				  IPCT_REFRESH |
-				  IPCT_PROTOINFO |
-				  IPCT_NATSEQADJ |
-				  IPCT_MARK |
-				  events,
-				  ct,
-				  pid,
-				  report);
-}
-
 static struct nf_conn *
 ctnetlink_create_conntrack(struct nlattr *cda[],
 			   struct nf_conntrack_tuple *otuple,
@@ -1373,6 +1351,7 @@ ctnetlink_new_conntrack(struct sock *ctnl, struct sk_buff *skb,
 		err = -ENOENT;
 		if (nlh->nlmsg_flags & NLM_F_CREATE) {
 			struct nf_conn *ct;
+			enum ip_conntrack_events events;
 
 			ct = ctnetlink_create_conntrack(cda, &otuple,
 							&rtuple, u3);
@@ -1383,9 +1362,18 @@ ctnetlink_new_conntrack(struct sock *ctnl, struct sk_buff *skb,
 			err = 0;
 			nf_conntrack_get(&ct->ct_general);
 			spin_unlock_bh(&nf_conntrack_lock);
-			ctnetlink_event_report(ct,
-					       NETLINK_CB(skb).pid,
-					       nlmsg_report(nlh));
+			if (test_bit(IPS_EXPECTED_BIT, &ct->status))
+				events = IPCT_RELATED;
+			else
+				events = IPCT_NEW;
+
+			nf_conntrack_event_report(IPCT_STATUS |
+						  IPCT_HELPER |
+						  IPCT_PROTOINFO |
+						  IPCT_NATSEQADJ |
+						  IPCT_MARK | events,
+						  ct, NETLINK_CB(skb).pid,
+						  nlmsg_report(nlh));
 			nf_ct_put(ct);
 		} else
 			spin_unlock_bh(&nf_conntrack_lock);
@@ -1404,9 +1392,13 @@ ctnetlink_new_conntrack(struct sock *ctnl, struct sk_buff *skb,
 		if (err == 0) {
 			nf_conntrack_get(&ct->ct_general);
 			spin_unlock_bh(&nf_conntrack_lock);
-			ctnetlink_event_report(ct,
-					       NETLINK_CB(skb).pid,
-					       nlmsg_report(nlh));
+			nf_conntrack_event_report(IPCT_STATUS |
+						  IPCT_HELPER |
+						  IPCT_PROTOINFO |
+						  IPCT_NATSEQADJ |
+						  IPCT_MARK,
+						  ct, NETLINK_CB(skb).pid,
+						  nlmsg_report(nlh));
 			nf_ct_put(ct);
 		} else
 			spin_unlock_bh(&nf_conntrack_lock);
diff --git a/net/netfilter/xt_cluster.c b/net/netfilter/xt_cluster.c
index 6c48476..69a639f 100644
--- a/net/netfilter/xt_cluster.c
+++ b/net/netfilter/xt_cluster.c
@@ -135,7 +135,13 @@ static bool xt_cluster_mt_checkentry(const struct xt_mtchk_param *par)
 {
 	struct xt_cluster_match_info *info = par->matchinfo;
 
-	if (info->node_mask >= (1 << info->total_nodes)) {
+	if (info->total_nodes > XT_CLUSTER_NODES_MAX) {
+		printk(KERN_ERR "xt_cluster: you have exceeded the maximum "
+				"number of cluster nodes (%u > %u)\n",
+				info->total_nodes, XT_CLUSTER_NODES_MAX);
+		return false;
+	}
+	if (info->node_mask >= (1ULL << info->total_nodes)) {
 		printk(KERN_ERR "xt_cluster: this node mask cannot be "
 				"higher than the total number of nodes\n");
 		return false;
diff --git a/net/sched/sch_fifo.c b/net/sched/sch_fifo.c
index 92cfc9d..69188e8 100644
--- a/net/sched/sch_fifo.c
+++ b/net/sched/sch_fifo.c
@@ -51,7 +51,7 @@ static int fifo_init(struct Qdisc *sch, struct nlattr *opt)
 		u32 limit = qdisc_dev(sch)->tx_queue_len ? : 1;
 
 		if (sch->ops == &bfifo_qdisc_ops)
-			limit *= qdisc_dev(sch)->mtu;
+			limit *= psched_mtu(qdisc_dev(sch));
 
 		q->limit = limit;
 	} else {
diff --git a/net/sunrpc/xprtrdma/svc_rdma_recvfrom.c b/net/sunrpc/xprtrdma/svc_rdma_recvfrom.c
index 629a287..42a6f9f 100644
--- a/net/sunrpc/xprtrdma/svc_rdma_recvfrom.c
+++ b/net/sunrpc/xprtrdma/svc_rdma_recvfrom.c
@@ -265,7 +265,7 @@ static int fast_reg_read_chunks(struct svcxprt_rdma *xprt,
 		frmr->page_list->page_list[page_no] =
 			ib_dma_map_single(xprt->sc_cm_id->device,
 					  page_address(rqstp->rq_arg.pages[page_no]),
-					  PAGE_SIZE, DMA_TO_DEVICE);
+					  PAGE_SIZE, DMA_FROM_DEVICE);
 		if (ib_dma_mapping_error(xprt->sc_cm_id->device,
 					 frmr->page_list->page_list[page_no]))
 			goto fatal_err;
diff --git a/net/sunrpc/xprtrdma/svc_rdma_sendto.c b/net/sunrpc/xprtrdma/svc_rdma_sendto.c
index 6c26a67..8b510c5 100644
--- a/net/sunrpc/xprtrdma/svc_rdma_sendto.c
+++ b/net/sunrpc/xprtrdma/svc_rdma_sendto.c
@@ -183,6 +183,7 @@ static int fast_reg_xdr(struct svcxprt_rdma *xprt,
 
  fatal_err:
 	printk("svcrdma: Error fast registering memory for xprt %p\n", xprt);
+	vec->frmr = NULL;
 	svc_rdma_put_frmr(xprt, frmr);
 	return -EIO;
 }
@@ -516,6 +517,7 @@ static int send_reply(struct svcxprt_rdma *rdma,
 		       "svcrdma: could not post a receive buffer, err=%d."
 		       "Closing transport %p.\n", ret, rdma);
 		set_bit(XPT_CLOSE, &rdma->sc_xprt.xpt_flags);
+		svc_rdma_put_frmr(rdma, vec->frmr);
 		svc_rdma_put_context(ctxt, 0);
 		return -ENOTCONN;
 	}
@@ -606,6 +608,7 @@ static int send_reply(struct svcxprt_rdma *rdma,
 	return 0;
 
  err:
+	svc_rdma_unmap_dma(ctxt);
 	svc_rdma_put_frmr(rdma, vec->frmr);
 	svc_rdma_put_context(ctxt, 1);
 	return -EIO;
diff --git a/net/sunrpc/xprtrdma/svc_rdma_transport.c b/net/sunrpc/xprtrdma/svc_rdma_transport.c
index 3d810e7..4b0c2fa 100644
--- a/net/sunrpc/xprtrdma/svc_rdma_transport.c
+++ b/net/sunrpc/xprtrdma/svc_rdma_transport.c
@@ -520,8 +520,9 @@ int svc_rdma_post_recv(struct svcxprt_rdma *xprt)
 	svc_xprt_get(&xprt->sc_xprt);
 	ret = ib_post_recv(xprt->sc_qp, &recv_wr, &bad_recv_wr);
 	if (ret) {
-		svc_xprt_put(&xprt->sc_xprt);
+		svc_rdma_unmap_dma(ctxt);
 		svc_rdma_put_context(ctxt, 1);
+		svc_xprt_put(&xprt->sc_xprt);
 	}
 	return ret;
 
diff --git a/net/wimax/op-msg.c b/net/wimax/op-msg.c
index 5d149c1..9ad4d89 100644
--- a/net/wimax/op-msg.c
+++ b/net/wimax/op-msg.c
@@ -149,7 +149,8 @@ struct sk_buff *wimax_msg_alloc(struct wimax_dev *wimax_dev,
 	}
 	result = nla_put(skb, WIMAX_GNL_MSG_DATA, size, msg);
 	if (result < 0) {
-		dev_err(dev, "no memory to add payload in attribute\n");
+		dev_err(dev, "no memory to add payload (msg %p size %zu) in "
+			"attribute: %d\n", msg, size, result);
 		goto error_nla_put;
 	}
 	genlmsg_end(skb, genl_msg);
@@ -299,10 +300,10 @@ int wimax_msg(struct wimax_dev *wimax_dev, const char *pipe_name,
 	struct sk_buff *skb;
 
 	skb = wimax_msg_alloc(wimax_dev, pipe_name, buf, size, gfp_flags);
-	if (skb == NULL)
-		goto error_msg_new;
-	result = wimax_msg_send(wimax_dev, skb);
-error_msg_new:
+	if (IS_ERR(skb))
+		result = PTR_ERR(skb);
+	else
+		result = wimax_msg_send(wimax_dev, skb);
 	return result;
 }
 EXPORT_SYMBOL_GPL(wimax_msg);
diff --git a/net/wimax/stack.c b/net/wimax/stack.c
index a0ee76b..933e1422 100644
--- a/net/wimax/stack.c
+++ b/net/wimax/stack.c
@@ -338,8 +338,21 @@ out:
  */
 void wimax_state_change(struct wimax_dev *wimax_dev, enum wimax_st new_state)
 {
+	/*
+	 * A driver cannot take the wimax_dev out of the
+	 * __WIMAX_ST_NULL state unless by calling wimax_dev_add(). If
+	 * the wimax_dev's state is still NULL, we ignore any request
+	 * to change its state because it means it hasn't been yet
+	 * registered.
+	 *
+	 * There is no need to complain about it, as routines that
+	 * call this might be shared from different code paths that
+	 * are called before or after wimax_dev_add() has done its
+	 * job.
+	 */
 	mutex_lock(&wimax_dev->mutex);
-	__wimax_state_change(wimax_dev, new_state);
+	if (wimax_dev->state > __WIMAX_ST_NULL)
+		__wimax_state_change(wimax_dev, new_state);
 	mutex_unlock(&wimax_dev->mutex);
 	return;
 }
@@ -376,7 +389,7 @@ EXPORT_SYMBOL_GPL(wimax_state_get);
 void wimax_dev_init(struct wimax_dev *wimax_dev)
 {
 	INIT_LIST_HEAD(&wimax_dev->id_table_node);
-	__wimax_state_set(wimax_dev, WIMAX_ST_UNINITIALIZED);
+	__wimax_state_set(wimax_dev, __WIMAX_ST_NULL);
 	mutex_init(&wimax_dev->mutex);
 	mutex_init(&wimax_dev->mutex_reset);
 }
diff --git a/net/wireless/reg.c b/net/wireless/reg.c
index 6c1993d..08265ca 100644
--- a/net/wireless/reg.c
+++ b/net/wireless/reg.c
@@ -907,6 +907,7 @@ EXPORT_SYMBOL(freq_reg_info);
 int freq_reg_info(struct wiphy *wiphy, u32 center_freq, u32 *bandwidth,
 			 const struct ieee80211_reg_rule **reg_rule)
 {
+	assert_cfg80211_lock();
 	return freq_reg_info_regd(wiphy, center_freq,
 		bandwidth, reg_rule, NULL);
 }
@@ -1133,7 +1134,8 @@ static bool reg_is_world_roaming(struct wiphy *wiphy)
 	if (is_world_regdom(cfg80211_regdomain->alpha2) ||
 	    (wiphy->regd && is_world_regdom(wiphy->regd->alpha2)))
 		return true;
-	if (last_request->initiator != NL80211_REGDOM_SET_BY_COUNTRY_IE &&
+	if (last_request &&
+	    last_request->initiator != NL80211_REGDOM_SET_BY_COUNTRY_IE &&
 	    wiphy->custom_regulatory)
 		return true;
 	return false;
@@ -1142,6 +1144,12 @@ static bool reg_is_world_roaming(struct wiphy *wiphy)
 /* Reap the advantages of previously found beacons */
 static void reg_process_beacons(struct wiphy *wiphy)
 {
+	/*
+	 * Means we are just firing up cfg80211, so no beacons would
+	 * have been processed yet.
+	 */
+	if (!last_request)
+		return;
 	if (!reg_is_world_roaming(wiphy))
 		return;
 	wiphy_update_beacon_reg(wiphy);
@@ -1176,6 +1184,8 @@ static void handle_channel_custom(struct wiphy *wiphy,
 	struct ieee80211_supported_band *sband;
 	struct ieee80211_channel *chan;
 
+	assert_cfg80211_lock();
+
 	sband = wiphy->bands[band];
 	BUG_ON(chan_idx >= sband->n_channels);
 	chan = &sband->channels[chan_idx];
@@ -1214,10 +1224,13 @@ void wiphy_apply_custom_regulatory(struct wiphy *wiphy,
 				   const struct ieee80211_regdomain *regd)
 {
 	enum ieee80211_band band;
+
+	mutex_lock(&cfg80211_mutex);
 	for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
 		if (wiphy->bands[band])
 			handle_band_custom(wiphy, band, regd);
 	}
+	mutex_unlock(&cfg80211_mutex);
 }
 EXPORT_SYMBOL(wiphy_apply_custom_regulatory);
 
@@ -1423,7 +1436,7 @@ new_request:
 	return call_crda(last_request->alpha2);
 }
 
-/* This currently only processes user and driver regulatory hints */
+/* This processes *all* regulatory hints */
 static void reg_process_hint(struct regulatory_request *reg_request)
 {
 	int r = 0;
diff --git a/net/wireless/scan.c b/net/wireless/scan.c
index 2ae65b3..1f260c4 100644
--- a/net/wireless/scan.c
+++ b/net/wireless/scan.c
@@ -395,6 +395,7 @@ cfg80211_bss_update(struct cfg80211_registered_device *dev,
 					memcpy(ies, res->pub.information_elements, ielen);
 					found->ies_allocated = true;
 					found->pub.information_elements = ies;
+					found->pub.len_information_elements = ielen;
 				}
 			}
 		}