networking: make skb_put & friends return void pointers

It seems like a historic accident that these return unsigned char *,
and in many places that means casts are required, more often than not.

Make these functions (skb_put, __skb_put and pskb_put) return void *
and remove all the casts across the tree, adding a (u8 *) cast only
where the unsigned char pointer was used directly, all done with the
following spatch:

    @@
    expression SKB, LEN;
    typedef u8;
    identifier fn = { skb_put, __skb_put };
    @@
    - *(fn(SKB, LEN))
    + *(u8 *)fn(SKB, LEN)

    @@
    expression E, SKB, LEN;
    identifier fn = { skb_put, __skb_put };
    type T;
    @@
    - E = ((T *)(fn(SKB, LEN)))
    + E = fn(SKB, LEN)

which actually doesn't cover pskb_put since there are only three
users overall.

A handful of stragglers were converted manually, notably a macro in
drivers/isdn/i4l/isdn_bsdcomp.c and, oddly enough, one of the many
instances in net/bluetooth/hci_sock.c. In the former file, I also
had to fix one whitespace problem spatch introduced.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

52 files changed, 199 insertions, 226 deletions

diff --git a/net/802/garp.c b/net/802/garp.c
index b38ee6d..a9a2665 100644
--- a/net/802/garp.c
+++ b/net/802/garp.c
@@ -221,7 +221,7 @@ static int garp_pdu_init(struct garp_applicant *app)
 	skb->protocol = htons(ETH_P_802_2);
 	skb_reserve(skb, LL_RESERVED_SPACE(app->dev) + LLC_RESERVE);
 
-	gp = (struct garp_pdu_hdr *)__skb_put(skb, sizeof(*gp));
+	gp = __skb_put(skb, sizeof(*gp));
 	put_unaligned(htons(GARP_PROTOCOL_ID), &gp->protocol);
 
 	app->pdu = skb;
@@ -268,7 +268,7 @@ static int garp_pdu_append_msg(struct garp_applicant *app, u8 attrtype)
 
 	if (skb_tailroom(app->pdu) < sizeof(*gm))
 		return -1;
-	gm = (struct garp_msg_hdr *)__skb_put(app->pdu, sizeof(*gm));
+	gm = __skb_put(app->pdu, sizeof(*gm));
 	gm->attrtype = attrtype;
 	garp_cb(app->pdu)->cur_type = attrtype;
 	return 0;
@@ -299,7 +299,7 @@ again:
 	len = sizeof(*ga) + attr->dlen;
 	if (skb_tailroom(app->pdu) < len)
 		goto queue;
-	ga = (struct garp_attr_hdr *)__skb_put(app->pdu, len);
+	ga = __skb_put(app->pdu, len);
 	ga->len   = len;
 	ga->event = event;
 	memcpy(ga->data, attr->data, attr->dlen);
diff --git a/net/802/mrp.c b/net/802/mrp.c
index 72db278..be4dd31 100644
--- a/net/802/mrp.c
+++ b/net/802/mrp.c
@@ -311,7 +311,7 @@ static int mrp_pdu_init(struct mrp_applicant *app)
 	skb_reset_network_header(skb);
 	skb_reset_transport_header(skb);
 
-	ph = (struct mrp_pdu_hdr *)__skb_put(skb, sizeof(*ph));
+	ph = __skb_put(skb, sizeof(*ph));
 	ph->version = app->app->version;
 
 	app->pdu = skb;
@@ -324,7 +324,7 @@ static int mrp_pdu_append_end_mark(struct mrp_applicant *app)
 
 	if (skb_tailroom(app->pdu) < sizeof(*endmark))
 		return -1;
-	endmark = (__be16 *)__skb_put(app->pdu, sizeof(*endmark));
+	endmark = __skb_put(app->pdu, sizeof(*endmark));
 	put_unaligned(MRP_END_MARK, endmark);
 	return 0;
 }
@@ -368,7 +368,7 @@ static int mrp_pdu_append_msg_hdr(struct mrp_applicant *app,
 
 	if (skb_tailroom(app->pdu) < sizeof(*mh))
 		return -1;
-	mh = (struct mrp_msg_hdr *)__skb_put(app->pdu, sizeof(*mh));
+	mh = __skb_put(app->pdu, sizeof(*mh));
 	mh->attrtype = attrtype;
 	mh->attrlen = attrlen;
 	mrp_cb(app->pdu)->mh = mh;
@@ -382,8 +382,7 @@ static int mrp_pdu_append_vecattr_hdr(struct mrp_applicant *app,
 
 	if (skb_tailroom(app->pdu) < sizeof(*vah) + attrlen)
 		return -1;
-	vah = (struct mrp_vecattr_hdr *)__skb_put(app->pdu,
-						  sizeof(*vah) + attrlen);
+	vah = __skb_put(app->pdu, sizeof(*vah) + attrlen);
 	put_unaligned(0, &vah->lenflags);
 	memcpy(vah->firstattrvalue, firstattrvalue, attrlen);
 	mrp_cb(app->pdu)->vah = vah;
@@ -435,7 +434,7 @@ again:
 	if (!pos) {
 		if (skb_tailroom(app->pdu) < sizeof(u8))
 			goto queue;
-		vaevents = (u8 *)__skb_put(app->pdu, sizeof(u8));
+		vaevents = __skb_put(app->pdu, sizeof(u8));
 	} else {
 		vaevents = (u8 *)(skb_tail_pointer(app->pdu) - sizeof(u8));
 	}
diff --git a/net/appletalk/ddp.c b/net/appletalk/ddp.c
index 465cc24..c7af6dc 100644
--- a/net/appletalk/ddp.c
+++ b/net/appletalk/ddp.c
@@ -1647,7 +1647,7 @@ static int atalk_sendmsg(struct socket *sock, struct msghdr *msg, size_t len)
 
 	SOCK_DEBUG(sk, "SK %p: Begin build.\n", sk);
 
-	ddp = (struct ddpehdr *)skb_put(skb, sizeof(struct ddpehdr));
+	ddp = skb_put(skb, sizeof(struct ddpehdr));
 	ddp->deh_len_hops  = htons(len + sizeof(*ddp));
 	ddp->deh_dnet  = usat->sat_addr.s_net;
 	ddp->deh_snet  = at->src_net;
diff --git a/net/atm/clip.c b/net/atm/clip.c
index ec527b6..a7e4018 100644
--- a/net/atm/clip.c
+++ b/net/atm/clip.c
@@ -60,7 +60,7 @@ static int to_atmarpd(enum atmarp_ctrl_type type, int itf, __be32 ip)
 	skb = alloc_skb(sizeof(struct atmarp_ctrl), GFP_ATOMIC);
 	if (!skb)
 		return -ENOMEM;
-	ctrl = (struct atmarp_ctrl *)skb_put(skb, sizeof(struct atmarp_ctrl));
+	ctrl = skb_put(skb, sizeof(struct atmarp_ctrl));
 	ctrl->type = type;
 	ctrl->itf_num = itf;
 	ctrl->ip = ip;
diff --git a/net/batman-adv/icmp_socket.c b/net/batman-adv/icmp_socket.c
index 6308c9f..8ead292 100644
--- a/net/batman-adv/icmp_socket.c
+++ b/net/batman-adv/icmp_socket.c
@@ -207,7 +207,7 @@ static ssize_t batadv_socket_write(struct file *file, const char __user *buff,
 
 	skb->priority = TC_PRIO_CONTROL;
 	skb_reserve(skb, ETH_HLEN);
-	icmp_header = (struct batadv_icmp_header *)skb_put(skb, packet_len);
+	icmp_header = skb_put(skb, packet_len);
 
 	if (copy_from_user(icmp_header, buff, packet_len)) {
 		len = -EFAULT;
diff --git a/net/batman-adv/tp_meter.c b/net/batman-adv/tp_meter.c
index e3e2585..bfe8eff 100644
--- a/net/batman-adv/tp_meter.c
+++ b/net/batman-adv/tp_meter.c
@@ -595,7 +595,7 @@ static int batadv_tp_send_msg(struct batadv_tp_vars *tp_vars, const u8 *src,
 		return BATADV_TP_REASON_MEMORY_ERROR;
 
 	skb_reserve(skb, ETH_HLEN);
-	icmp = (struct batadv_icmp_tp_packet *)skb_put(skb, sizeof(*icmp));
+	icmp = skb_put(skb, sizeof(*icmp));
 
 	/* fill the icmp header */
 	ether_addr_copy(icmp->dst, orig_node->orig);
@@ -612,7 +612,7 @@ static int batadv_tp_send_msg(struct batadv_tp_vars *tp_vars, const u8 *src,
 	icmp->timestamp = htonl(timestamp);
 
 	data_len = len - sizeof(*icmp);
-	data = (u8 *)skb_put(skb, data_len);
+	data = skb_put(skb, data_len);
 	batadv_tp_fill_prerandom(tp_vars, data, data_len);
 
 	r = batadv_send_skb_to_orig(skb, orig_node, NULL);
@@ -1190,7 +1190,7 @@ static int batadv_tp_send_ack(struct batadv_priv *bat_priv, const u8 *dst,
 	}
 
 	skb_reserve(skb, ETH_HLEN);
-	icmp = (struct batadv_icmp_tp_packet *)skb_put(skb, sizeof(*icmp));
+	icmp = skb_put(skb, sizeof(*icmp));
 	icmp->packet_type = BATADV_ICMP;
 	icmp->version = BATADV_COMPAT_VERSION;
 	icmp->ttl = BATADV_TTL;
diff --git a/net/bluetooth/hci_request.c b/net/bluetooth/hci_request.c
index 4e4105a..b73ac14 100644
--- a/net/bluetooth/hci_request.c
+++ b/net/bluetooth/hci_request.c
@@ -299,7 +299,7 @@ struct sk_buff *hci_prepare_cmd(struct hci_dev *hdev, u16 opcode, u32 plen,
 	if (!skb)
 		return NULL;
 
-	hdr = (struct hci_command_hdr *) skb_put(skb, HCI_COMMAND_HDR_SIZE);
+	hdr = skb_put(skb, HCI_COMMAND_HDR_SIZE);
 	hdr->opcode = cpu_to_le16(opcode);
 	hdr->plen   = plen;
 
diff --git a/net/bluetooth/hci_sock.c b/net/bluetooth/hci_sock.c
index 083e87f..1301a87 100644
--- a/net/bluetooth/hci_sock.c
+++ b/net/bluetooth/hci_sock.c
@@ -410,7 +410,7 @@ static struct sk_buff *create_monitor_event(struct hci_dev *hdev, int event)
 		if (!skb)
 			return NULL;
 
-		ni = (void *)skb_put(skb, HCI_MON_NEW_INDEX_SIZE);
+		ni = skb_put(skb, HCI_MON_NEW_INDEX_SIZE);
 		ni->type = hdev->dev_type;
 		ni->bus = hdev->bus;
 		bacpy(&ni->bdaddr, &hdev->bdaddr);
@@ -438,7 +438,7 @@ static struct sk_buff *create_monitor_event(struct hci_dev *hdev, int event)
 		if (!skb)
 			return NULL;
 
-		ii = (void *)skb_put(skb, HCI_MON_INDEX_INFO_SIZE);
+		ii = skb_put(skb, HCI_MON_INDEX_INFO_SIZE);
 		bacpy(&ii->bdaddr, &hdev->bdaddr);
 		ii->manufacturer = cpu_to_le16(hdev->manufacturer);
 
@@ -517,7 +517,7 @@ static struct sk_buff *create_monitor_ctrl_open(struct sock *sk)
 	put_unaligned_le16(format, skb_put(skb, 2));
 	skb_put_data(skb, ver, sizeof(ver));
 	put_unaligned_le32(flags, skb_put(skb, 4));
-	*skb_put(skb, 1) = TASK_COMM_LEN;
+	*(u8 *)skb_put(skb, 1) = TASK_COMM_LEN;
 	skb_put_data(skb, hci_pi(sk)->comm, TASK_COMM_LEN);
 
 	__net_timestamp(skb);
@@ -616,7 +616,7 @@ send_monitor_note(struct sock *sk, const char *fmt, ...)
 
 	va_start(args, fmt);
 	vsprintf(skb_put(skb, len), fmt, args);
-	*skb_put(skb, 1) = 0;
+	*(u8 *)skb_put(skb, 1) = 0;
 	va_end(args);
 
 	__net_timestamp(skb);
@@ -703,11 +703,11 @@ static void hci_si_event(struct hci_dev *hdev, int type, int dlen, void *data)
 	if (!skb)
 		return;
 
-	hdr = (void *)skb_put(skb, HCI_EVENT_HDR_SIZE);
+	hdr = skb_put(skb, HCI_EVENT_HDR_SIZE);
 	hdr->evt  = HCI_EV_STACK_INTERNAL;
 	hdr->plen = sizeof(*ev) + dlen;
 
-	ev  = (void *)skb_put(skb, sizeof(*ev) + dlen);
+	ev = skb_put(skb, sizeof(*ev) + dlen);
 	ev->type = type;
 	memcpy(ev->data, data, dlen);
 
diff --git a/net/bluetooth/hidp/core.c b/net/bluetooth/hidp/core.c
index 9e83713..c0d0832 100644
--- a/net/bluetooth/hidp/core.c
+++ b/net/bluetooth/hidp/core.c
@@ -112,7 +112,7 @@ static int hidp_send_message(struct hidp_session *session, struct socket *sock,
 		return -ENOMEM;
 	}
 
-	*skb_put(skb, 1) = hdr;
+	*(u8 *)skb_put(skb, 1) = hdr;
 	if (data && size > 0)
 		skb_put_data(skb, data, size);
 
diff --git a/net/bluetooth/l2cap_core.c b/net/bluetooth/l2cap_core.c
index fe6a552..303c779 100644
--- a/net/bluetooth/l2cap_core.c
+++ b/net/bluetooth/l2cap_core.c
@@ -1048,7 +1048,7 @@ static struct sk_buff *l2cap_create_sframe_pdu(struct l2cap_chan *chan,
 	if (!skb)
 		return ERR_PTR(-ENOMEM);
 
-	lh = (struct l2cap_hdr *) skb_put(skb, L2CAP_HDR_SIZE);
+	lh = skb_put(skb, L2CAP_HDR_SIZE);
 	lh->len = cpu_to_le16(hlen - L2CAP_HDR_SIZE);
 	lh->cid = cpu_to_le16(chan->dcid);
 
@@ -2182,7 +2182,7 @@ static struct sk_buff *l2cap_create_connless_pdu(struct l2cap_chan *chan,
 		return skb;
 
 	/* Create L2CAP header */
-	lh = (struct l2cap_hdr *) skb_put(skb, L2CAP_HDR_SIZE);
+	lh = skb_put(skb, L2CAP_HDR_SIZE);
 	lh->cid = cpu_to_le16(chan->dcid);
 	lh->len = cpu_to_le16(len + L2CAP_PSMLEN_SIZE);
 	put_unaligned(chan->psm, (__le16 *) skb_put(skb, L2CAP_PSMLEN_SIZE));
@@ -2213,7 +2213,7 @@ static struct sk_buff *l2cap_create_basic_pdu(struct l2cap_chan *chan,
 		return skb;
 
 	/* Create L2CAP header */
-	lh = (struct l2cap_hdr *) skb_put(skb, L2CAP_HDR_SIZE);
+	lh = skb_put(skb, L2CAP_HDR_SIZE);
 	lh->cid = cpu_to_le16(chan->dcid);
 	lh->len = cpu_to_le16(len);
 
@@ -2255,7 +2255,7 @@ static struct sk_buff *l2cap_create_iframe_pdu(struct l2cap_chan *chan,
 		return skb;
 
 	/* Create L2CAP header */
-	lh = (struct l2cap_hdr *) skb_put(skb, L2CAP_HDR_SIZE);
+	lh = skb_put(skb, L2CAP_HDR_SIZE);
 	lh->cid = cpu_to_le16(chan->dcid);
 	lh->len = cpu_to_le16(len + (hlen - L2CAP_HDR_SIZE));
 
@@ -2373,7 +2373,7 @@ static struct sk_buff *l2cap_create_le_flowctl_pdu(struct l2cap_chan *chan,
 		return skb;
 
 	/* Create L2CAP header */
-	lh = (struct l2cap_hdr *) skb_put(skb, L2CAP_HDR_SIZE);
+	lh = skb_put(skb, L2CAP_HDR_SIZE);
 	lh->cid = cpu_to_le16(chan->dcid);
 	lh->len = cpu_to_le16(len + (hlen - L2CAP_HDR_SIZE));
 
@@ -2908,7 +2908,7 @@ static struct sk_buff *l2cap_build_cmd(struct l2cap_conn *conn, u8 code,
 	if (!skb)
 		return NULL;
 
-	lh = (struct l2cap_hdr *) skb_put(skb, L2CAP_HDR_SIZE);
+	lh = skb_put(skb, L2CAP_HDR_SIZE);
 	lh->len = cpu_to_le16(L2CAP_CMD_HDR_SIZE + dlen);
 
 	if (conn->hcon->type == LE_LINK)
@@ -2916,7 +2916,7 @@ static struct sk_buff *l2cap_build_cmd(struct l2cap_conn *conn, u8 code,
 	else
 		lh->cid = cpu_to_le16(L2CAP_CID_SIGNALING);
 
-	cmd = (struct l2cap_cmd_hdr *) skb_put(skb, L2CAP_CMD_HDR_SIZE);
+	cmd = skb_put(skb, L2CAP_CMD_HDR_SIZE);
 	cmd->code  = code;
 	cmd->ident = ident;
 	cmd->len   = cpu_to_le16(dlen);
diff --git a/net/bluetooth/mgmt_util.c b/net/bluetooth/mgmt_util.c
index 11d0ca6..d057113 100644
--- a/net/bluetooth/mgmt_util.c
+++ b/net/bluetooth/mgmt_util.c
@@ -66,7 +66,7 @@ int mgmt_send_event(u16 event, struct hci_dev *hdev, unsigned short channel,
 	if (!skb)
 		return -ENOMEM;
 
-	hdr = (void *) skb_put(skb, sizeof(*hdr));
+	hdr = skb_put(skb, sizeof(*hdr));
 	hdr->opcode = cpu_to_le16(event);
 	if (hdev)
 		hdr->index = cpu_to_le16(hdev->id);
@@ -103,13 +103,13 @@ int mgmt_cmd_status(struct sock *sk, u16 index, u16 cmd, u8 status)
 	if (!skb)
 		return -ENOMEM;
 
-	hdr = (void *) skb_put(skb, sizeof(*hdr));
+	hdr = skb_put(skb, sizeof(*hdr));
 
 	hdr->opcode = cpu_to_le16(MGMT_EV_CMD_STATUS);
 	hdr->index = cpu_to_le16(index);
 	hdr->len = cpu_to_le16(sizeof(*ev));
 
-	ev = (void *) skb_put(skb, sizeof(*ev));
+	ev = skb_put(skb, sizeof(*ev));
 	ev->status = status;
 	ev->opcode = cpu_to_le16(cmd);
 
@@ -147,13 +147,13 @@ int mgmt_cmd_complete(struct sock *sk, u16 index, u16 cmd, u8 status,
 	if (!skb)
 		return -ENOMEM;
 
-	hdr = (void *) skb_put(skb, sizeof(*hdr));
+	hdr = skb_put(skb, sizeof(*hdr));
 
 	hdr->opcode = cpu_to_le16(MGMT_EV_CMD_COMPLETE);
 	hdr->index = cpu_to_le16(index);
 	hdr->len = cpu_to_le16(sizeof(*ev) + rp_len);
 
-	ev = (void *) skb_put(skb, sizeof(*ev) + rp_len);
+	ev = skb_put(skb, sizeof(*ev) + rp_len);
 	ev->opcode = cpu_to_le16(cmd);
 	ev->status = status;
 
diff --git a/net/bluetooth/rfcomm/core.c b/net/bluetooth/rfcomm/core.c
index 8ebca90..1a9b906 100644
--- a/net/bluetooth/rfcomm/core.c
+++ b/net/bluetooth/rfcomm/core.c
@@ -863,7 +863,7 @@ static int rfcomm_queue_disc(struct rfcomm_dlc *d)
 	if (!skb)
 		return -ENOMEM;
 
-	cmd = (void *) __skb_put(skb, sizeof(*cmd));
+	cmd = __skb_put(skb, sizeof(*cmd));
 	cmd->addr = d->addr;
 	cmd->ctrl = __ctrl(RFCOMM_DISC, 1);
 	cmd->len  = __len8(0);
diff --git a/net/core/pktgen.c b/net/core/pktgen.c
index 8860ad9..b8bcf90 100644
--- a/net/core/pktgen.c
+++ b/net/core/pktgen.c
@@ -2714,7 +2714,7 @@ static void pktgen_finalize_skb(struct pktgen_dev *pkt_dev, struct sk_buff *skb,
 	struct timeval timestamp;
 	struct pktgen_hdr *pgh;
 
-	pgh = (struct pktgen_hdr *)skb_put(skb, sizeof(*pgh));
+	pgh = skb_put(skb, sizeof(*pgh));
 	datalen -= sizeof(*pgh);
 
 	if (pkt_dev->nfrags <= 0) {
@@ -2845,33 +2845,34 @@ static struct sk_buff *fill_packet_ipv4(struct net_device *odev,
 
 	/*  Reserve for ethernet and IP header  */
 	eth = (__u8 *) skb_push(skb, 14);
-	mpls = (__be32 *)skb_put(skb, pkt_dev->nr_labels*sizeof(__u32));
+	mpls = skb_put(skb, pkt_dev->nr_labels * sizeof(__u32));
 	if (pkt_dev->nr_labels)
 		mpls_push(mpls, pkt_dev);
 
 	if (pkt_dev->vlan_id != 0xffff) {
 		if (pkt_dev->svlan_id != 0xffff) {
-			svlan_tci = (__be16 *)skb_put(skb, sizeof(__be16));
+			svlan_tci = skb_put(skb, sizeof(__be16));
 			*svlan_tci = build_tci(pkt_dev->svlan_id,
 					       pkt_dev->svlan_cfi,
 					       pkt_dev->svlan_p);
-			svlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16));
+			svlan_encapsulated_proto = skb_put(skb,
+							   sizeof(__be16));
 			*svlan_encapsulated_proto = htons(ETH_P_8021Q);
 		}
-		vlan_tci = (__be16 *)skb_put(skb, sizeof(__be16));
+		vlan_tci = skb_put(skb, sizeof(__be16));
 		*vlan_tci = build_tci(pkt_dev->vlan_id,
 				      pkt_dev->vlan_cfi,
 				      pkt_dev->vlan_p);
-		vlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16));
+		vlan_encapsulated_proto = skb_put(skb, sizeof(__be16));
 		*vlan_encapsulated_proto = htons(ETH_P_IP);
 	}
 
 	skb_reset_mac_header(skb);
 	skb_set_network_header(skb, skb->len);
-	iph = (struct iphdr *) skb_put(skb, sizeof(struct iphdr));
+	iph = skb_put(skb, sizeof(struct iphdr));
 
 	skb_set_transport_header(skb, skb->len);
-	udph = (struct udphdr *) skb_put(skb, sizeof(struct udphdr));
+	udph = skb_put(skb, sizeof(struct udphdr));
 	skb_set_queue_mapping(skb, queue_map);
 	skb->priority = pkt_dev->skb_priority;
 
@@ -2972,33 +2973,34 @@ static struct sk_buff *fill_packet_ipv6(struct net_device *odev,
 
 	/*  Reserve for ethernet and IP header  */
 	eth = (__u8 *) skb_push(skb, 14);
-	mpls = (__be32 *)skb_put(skb, pkt_dev->nr_labels*sizeof(__u32));
+	mpls = skb_put(skb, pkt_dev->nr_labels * sizeof(__u32));
 	if (pkt_dev->nr_labels)
 		mpls_push(mpls, pkt_dev);
 
 	if (pkt_dev->vlan_id != 0xffff) {
 		if (pkt_dev->svlan_id != 0xffff) {
-			svlan_tci = (__be16 *)skb_put(skb, sizeof(__be16));
+			svlan_tci = skb_put(skb, sizeof(__be16));
 			*svlan_tci = build_tci(pkt_dev->svlan_id,
 					       pkt_dev->svlan_cfi,
 					       pkt_dev->svlan_p);
-			svlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16));
+			svlan_encapsulated_proto = skb_put(skb,
+							   sizeof(__be16));
 			*svlan_encapsulated_proto = htons(ETH_P_8021Q);
 		}
-		vlan_tci = (__be16 *)skb_put(skb, sizeof(__be16));
+		vlan_tci = skb_put(skb, sizeof(__be16));
 		*vlan_tci = build_tci(pkt_dev->vlan_id,
 				      pkt_dev->vlan_cfi,
 				      pkt_dev->vlan_p);
-		vlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16));
+		vlan_encapsulated_proto = skb_put(skb, sizeof(__be16));
 		*vlan_encapsulated_proto = htons(ETH_P_IPV6);
 	}
 
 	skb_reset_mac_header(skb);
 	skb_set_network_header(skb, skb->len);
-	iph = (struct ipv6hdr *) skb_put(skb, sizeof(struct ipv6hdr));
+	iph = skb_put(skb, sizeof(struct ipv6hdr));
 
 	skb_set_transport_header(skb, skb->len);
-	udph = (struct udphdr *) skb_put(skb, sizeof(struct udphdr));
+	udph = skb_put(skb, sizeof(struct udphdr));
 	skb_set_queue_mapping(skb, queue_map);
 	skb->priority = pkt_dev->skb_priority;
 
diff --git a/net/core/skbuff.c b/net/core/skbuff.c
index c4d2c1f..0baa7f2 100644
--- a/net/core/skbuff.c
+++ b/net/core/skbuff.c
@@ -1421,7 +1421,7 @@ EXPORT_SYMBOL(skb_pad);
  *	returned.
  */
 
-unsigned char *pskb_put(struct sk_buff *skb, struct sk_buff *tail, int len)
+void *pskb_put(struct sk_buff *skb, struct sk_buff *tail, int len)
 {
 	if (tail != skb) {
 		skb->data_len += len;
@@ -1440,9 +1440,9 @@ EXPORT_SYMBOL_GPL(pskb_put);
  *	exceed the total buffer size the kernel will panic. A pointer to the
  *	first byte of the extra data is returned.
  */
-unsigned char *skb_put(struct sk_buff *skb, unsigned int len)
+void *skb_put(struct sk_buff *skb, unsigned int len)
 {
-	unsigned char *tmp = skb_tail_pointer(skb);
+	void *tmp = skb_tail_pointer(skb);
 	SKB_LINEAR_ASSERT(skb);
 	skb->tail += len;
 	skb->len  += len;
diff --git a/net/decnet/dn_dev.c b/net/decnet/dn_dev.c
index 9017a9a..1d84f6d 100644
--- a/net/decnet/dn_dev.c
+++ b/net/decnet/dn_dev.c
@@ -846,7 +846,7 @@ static void dn_send_endnode_hello(struct net_device *dev, struct dn_ifaddr *ifa)
 
 	skb->dev = dev;
 
-	msg = (struct endnode_hello_message *)skb_put(skb,sizeof(*msg));
+	msg = skb_put(skb, sizeof(*msg));
 
 	msg->msgflg  = 0x0D;
 	memcpy(msg->tiver, dn_eco_version, 3);
diff --git a/net/decnet/dn_nsp_out.c b/net/decnet/dn_nsp_out.c
index b8a5587..7e054b2 100644
--- a/net/decnet/dn_nsp_out.c
+++ b/net/decnet/dn_nsp_out.c
@@ -484,7 +484,7 @@ void dn_send_conn_ack (struct sock *sk)
 	if ((skb = dn_alloc_skb(sk, 3, sk->sk_allocation)) == NULL)
 		return;
 
-	msg = (struct nsp_conn_ack_msg *)skb_put(skb, 3);
+	msg = skb_put(skb, 3);
 	msg->msgflg = 0x24;
 	msg->dstaddr = scp->addrrem;
 
@@ -522,7 +522,7 @@ void dn_send_conn_conf(struct sock *sk, gfp_t gfp)
 	if ((skb = dn_alloc_skb(sk, 50 + len, gfp)) == NULL)
 		return;
 
-	msg = (struct nsp_conn_init_msg *)skb_put(skb, sizeof(*msg));
+	msg = skb_put(skb, sizeof(*msg));
 	msg->msgflg = 0x28;
 	msg->dstaddr = scp->addrrem;
 	msg->srcaddr = scp->addrloc;
@@ -530,7 +530,7 @@ void dn_send_conn_conf(struct sock *sk, gfp_t gfp)
 	msg->info = scp->info_loc;
 	msg->segsize = cpu_to_le16(scp->segsize_loc);
 
-	*skb_put(skb,1) = len;
+	*(u8 *)skb_put(skb, 1) = len;
 
 	if (len > 0)
 		skb_put_data(skb, scp->conndata_out.opt_data, len);
@@ -662,7 +662,7 @@ void dn_nsp_send_conninit(struct sock *sk, unsigned char msgflg)
 		return;
 
 	cb  = DN_SKB_CB(skb);
-	msg = (struct nsp_conn_init_msg *)skb_put(skb,sizeof(*msg));
+	msg = skb_put(skb, sizeof(*msg));
 
 	msg->msgflg	= msgflg;
 	msg->dstaddr	= 0x0000;		/* Remote Node will assign it*/
@@ -686,25 +686,25 @@ void dn_nsp_send_conninit(struct sock *sk, unsigned char msgflg)
 	if (scp->peer.sdn_flags & SDF_UICPROXY)
 		menuver |= DN_MENUVER_UIC;
 
-	*skb_put(skb, 1) = menuver;	/* Menu Version		*/
+	*(u8 *)skb_put(skb, 1) = menuver;	/* Menu Version		*/
 
 	aux = scp->accessdata.acc_userl;
-	*skb_put(skb, 1) = aux;
+	*(u8 *)skb_put(skb, 1) = aux;
 	if (aux > 0)
 		skb_put_data(skb, scp->accessdata.acc_user, aux);
 
 	aux = scp->accessdata.acc_passl;
-	*skb_put(skb, 1) = aux;
+	*(u8 *)skb_put(skb, 1) = aux;
 	if (aux > 0)
 		skb_put_data(skb, scp->accessdata.acc_pass, aux);
 
 	aux = scp->accessdata.acc_accl;
-	*skb_put(skb, 1) = aux;
+	*(u8 *)skb_put(skb, 1) = aux;
 	if (aux > 0)
 		skb_put_data(skb, scp->accessdata.acc_acc, aux);
 
 	aux = (__u8)le16_to_cpu(scp->conndata_out.opt_optl);
-	*skb_put(skb, 1) = aux;
+	*(u8 *)skb_put(skb, 1) = aux;
 	if (aux > 0)
 		skb_put_data(skb, scp->conndata_out.opt_data, aux);
 
diff --git a/net/ipv4/arp.c b/net/ipv4/arp.c
index a651c53..8b52179 100644
--- a/net/ipv4/arp.c
+++ b/net/ipv4/arp.c
@@ -539,7 +539,7 @@ struct sk_buff *arp_create(int type, int ptype, __be32 dest_ip,
 
 	skb_reserve(skb, hlen);
 	skb_reset_network_header(skb);
-	arp = (struct arphdr *) skb_put(skb, arp_hdr_len(dev));
+	arp = skb_put(skb, arp_hdr_len(dev));
 	skb->dev = dev;
 	skb->protocol = htons(ETH_P_ARP);
 	if (!src_hw)
diff --git a/net/ipv4/igmp.c b/net/ipv4/igmp.c
index 8f6b5bb..2202edf 100644
--- a/net/ipv4/igmp.c
+++ b/net/ipv4/igmp.c
@@ -414,7 +414,7 @@ static struct sk_buff *add_grhead(struct sk_buff *skb, struct ip_mc_list *pmc,
 		skb = igmpv3_newpack(dev, dev->mtu);
 	if (!skb)
 		return NULL;
-	pgr = (struct igmpv3_grec *)skb_put(skb, sizeof(struct igmpv3_grec));
+	pgr = skb_put(skb, sizeof(struct igmpv3_grec));
 	pgr->grec_type = type;
 	pgr->grec_auxwords = 0;
 	pgr->grec_nsrcs = 0;
@@ -508,7 +508,7 @@ static struct sk_buff *add_grec(struct sk_buff *skb, struct ip_mc_list *pmc,
 		}
 		if (!skb)
 			return NULL;
-		psrc = (__be32 *)skb_put(skb, sizeof(__be32));
+		psrc = skb_put(skb, sizeof(__be32));
 		*psrc = psf->sf_inaddr;
 		scount++; stotal++;
 		if ((type == IGMPV3_ALLOW_NEW_SOURCES ||
@@ -742,7 +742,7 @@ static int igmp_send_report(struct in_device *in_dev, struct ip_mc_list *pmc,
 	((u8 *)&iph[1])[2] = 0;
 	((u8 *)&iph[1])[3] = 0;
 
-	ih = (struct igmphdr *)skb_put(skb, sizeof(struct igmphdr));
+	ih = skb_put(skb, sizeof(struct igmphdr));
 	ih->type = type;
 	ih->code = 0;
 	ih->csum = 0;
diff --git a/net/ipv4/ipmr.c b/net/ipv4/ipmr.c
index a119989..abbd7c9 100644
--- a/net/ipv4/ipmr.c
+++ b/net/ipv4/ipmr.c
@@ -1044,7 +1044,7 @@ static int ipmr_cache_report(struct mr_table *mrt,
 		msg->im_vif = vifi;
 		skb_dst_set(skb, dst_clone(skb_dst(pkt)));
 		/* Add our header */
-		igmp = (struct igmphdr *)skb_put(skb, sizeof(struct igmphdr));
+		igmp = skb_put(skb, sizeof(struct igmphdr));
 		igmp->type = assert;
 		msg->im_msgtype = assert;
 		igmp->code = 0;
diff --git a/net/ipv4/netfilter/ipt_SYNPROXY.c b/net/ipv4/netfilter/ipt_SYNPROXY.c
index af2b69b..f1528f7 100644
--- a/net/ipv4/netfilter/ipt_SYNPROXY.c
+++ b/net/ipv4/netfilter/ipt_SYNPROXY.c
@@ -24,7 +24,7 @@ synproxy_build_ip(struct net *net, struct sk_buff *skb, __be32 saddr,
 	struct iphdr *iph;
 
 	skb_reset_network_header(skb);
-	iph = (struct iphdr *)skb_put(skb, sizeof(*iph));
+	iph = skb_put(skb, sizeof(*iph));
 	iph->version	= 4;
 	iph->ihl	= sizeof(*iph) / 4;
 	iph->tos	= 0;
@@ -91,7 +91,7 @@ synproxy_send_client_synack(struct net *net,
 	niph = synproxy_build_ip(net, nskb, iph->daddr, iph->saddr);
 
 	skb_reset_transport_header(nskb);
-	nth = (struct tcphdr *)skb_put(nskb, tcp_hdr_size);
+	nth = skb_put(nskb, tcp_hdr_size);
 	nth->source	= th->dest;
 	nth->dest	= th->source;
 	nth->seq	= htonl(__cookie_v4_init_sequence(iph, th, &mss));
@@ -133,7 +133,7 @@ synproxy_send_server_syn(struct net *net,
 	niph = synproxy_build_ip(net, nskb, iph->saddr, iph->daddr);
 
 	skb_reset_transport_header(nskb);
-	nth = (struct tcphdr *)skb_put(nskb, tcp_hdr_size);
+	nth = skb_put(nskb, tcp_hdr_size);
 	nth->source	= th->source;
 	nth->dest	= th->dest;
 	nth->seq	= htonl(recv_seq - 1);
@@ -178,7 +178,7 @@ synproxy_send_server_ack(struct net *net,
 	niph = synproxy_build_ip(net, nskb, iph->daddr, iph->saddr);
 
 	skb_reset_transport_header(nskb);
-	nth = (struct tcphdr *)skb_put(nskb, tcp_hdr_size);
+	nth = skb_put(nskb, tcp_hdr_size);
 	nth->source	= th->dest;
 	nth->dest	= th->source;
 	nth->seq	= htonl(ntohl(th->ack_seq));
@@ -216,7 +216,7 @@ synproxy_send_client_ack(struct net *net,
 	niph = synproxy_build_ip(net, nskb, iph->saddr, iph->daddr);
 
 	skb_reset_transport_header(nskb);
-	nth = (struct tcphdr *)skb_put(nskb, tcp_hdr_size);
+	nth = skb_put(nskb, tcp_hdr_size);
 	nth->source	= th->source;
 	nth->dest	= th->dest;
 	nth->seq	= htonl(ntohl(th->seq) + 1);
diff --git a/net/ipv4/netfilter/nf_reject_ipv4.c b/net/ipv4/netfilter/nf_reject_ipv4.c
index 52b7dcc..eeacbda 100644
--- a/net/ipv4/netfilter/nf_reject_ipv4.c
+++ b/net/ipv4/netfilter/nf_reject_ipv4.c
@@ -51,7 +51,7 @@ struct iphdr *nf_reject_iphdr_put(struct sk_buff *nskb,
 	struct iphdr *niph, *oiph = ip_hdr(oldskb);
 
 	skb_reset_network_header(nskb);
-	niph = (struct iphdr *)skb_put(nskb, sizeof(struct iphdr));
+	niph = skb_put(nskb, sizeof(struct iphdr));
 	niph->version	= 4;
 	niph->ihl	= sizeof(struct iphdr) / 4;
 	niph->tos	= 0;
diff --git a/net/ipv6/mcast.c b/net/ipv6/mcast.c
index b64046c..e222113 100644
--- a/net/ipv6/mcast.c
+++ b/net/ipv6/mcast.c
@@ -1692,7 +1692,7 @@ static struct sk_buff *add_grhead(struct sk_buff *skb, struct ifmcaddr6 *pmc,
 		skb = mld_newpack(pmc->idev, dev->mtu);
 	if (!skb)
 		return NULL;
-	pgr = (struct mld2_grec *)skb_put(skb, sizeof(struct mld2_grec));
+	pgr = skb_put(skb, sizeof(struct mld2_grec));
 	pgr->grec_type = type;
 	pgr->grec_auxwords = 0;
 	pgr->grec_nsrcs = 0;
@@ -1784,7 +1784,7 @@ static struct sk_buff *add_grec(struct sk_buff *skb, struct ifmcaddr6 *pmc,
 		}
 		if (!skb)
 			return NULL;
-		psrc = (struct in6_addr *)skb_put(skb, sizeof(*psrc));
+		psrc = skb_put(skb, sizeof(*psrc));
 		*psrc = psf->sf_addr;
 		scount++; stotal++;
 		if ((type == MLD2_ALLOW_NEW_SOURCES ||
diff --git a/net/ipv6/ndisc.c b/net/ipv6/ndisc.c
index d310dc4..0327c1f 100644
--- a/net/ipv6/ndisc.c
+++ b/net/ipv6/ndisc.c
@@ -528,7 +528,7 @@ void ndisc_send_na(struct net_device *dev, const struct in6_addr *daddr,
 	if (!skb)
 		return;
 
-	msg = (struct nd_msg *)skb_put(skb, sizeof(*msg));
+	msg = skb_put(skb, sizeof(*msg));
 	*msg = (struct nd_msg) {
 		.icmph = {
 			.icmp6_type = NDISC_NEIGHBOUR_ADVERTISEMENT,
@@ -597,7 +597,7 @@ void ndisc_send_ns(struct net_device *dev, const struct in6_addr *solicit,
 	if (!skb)
 		return;
 
-	msg = (struct nd_msg *)skb_put(skb, sizeof(*msg));
+	msg = skb_put(skb, sizeof(*msg));
 	*msg = (struct nd_msg) {
 		.icmph = {
 			.icmp6_type = NDISC_NEIGHBOUR_SOLICITATION,
@@ -657,7 +657,7 @@ void ndisc_send_rs(struct net_device *dev, const struct in6_addr *saddr,
 	if (!skb)
 		return;
 
-	msg = (struct rs_msg *)skb_put(skb, sizeof(*msg));
+	msg = skb_put(skb, sizeof(*msg));
 	*msg = (struct rs_msg) {
 		.icmph = {
 			.icmp6_type = NDISC_ROUTER_SOLICITATION,
@@ -1633,7 +1633,7 @@ void ndisc_send_redirect(struct sk_buff *skb, const struct in6_addr *target)
 	if (!buff)
 		goto release;
 
-	msg = (struct rd_msg *)skb_put(buff, sizeof(*msg));
+	msg = skb_put(buff, sizeof(*msg));
 	*msg = (struct rd_msg) {
 		.icmph = {
 			.icmp6_type = NDISC_REDIRECT,
diff --git a/net/ipv6/netfilter/ip6t_SYNPROXY.c b/net/ipv6/netfilter/ip6t_SYNPROXY.c
index d3c4daa..ce203dd 100644
--- a/net/ipv6/netfilter/ip6t_SYNPROXY.c
+++ b/net/ipv6/netfilter/ip6t_SYNPROXY.c
@@ -27,7 +27,7 @@ synproxy_build_ip(struct net *net, struct sk_buff *skb,
 	struct ipv6hdr *iph;
 
 	skb_reset_network_header(skb);
-	iph = (struct ipv6hdr *)skb_put(skb, sizeof(*iph));
+	iph = skb_put(skb, sizeof(*iph));
 	ip6_flow_hdr(iph, 0, 0);
 	iph->hop_limit	= net->ipv6.devconf_all->hop_limit;
 	iph->nexthdr	= IPPROTO_TCP;
@@ -105,7 +105,7 @@ synproxy_send_client_synack(struct net *net,
 	niph = synproxy_build_ip(net, nskb, &iph->daddr, &iph->saddr);
 
 	skb_reset_transport_header(nskb);
-	nth = (struct tcphdr *)skb_put(nskb, tcp_hdr_size);
+	nth = skb_put(nskb, tcp_hdr_size);
 	nth->source	= th->dest;
 	nth->dest	= th->source;
 	nth->seq	= htonl(__cookie_v6_init_sequence(iph, th, &mss));
@@ -147,7 +147,7 @@ synproxy_send_server_syn(struct net *net,
 	niph = synproxy_build_ip(net, nskb, &iph->saddr, &iph->daddr);
 
 	skb_reset_transport_header(nskb);
-	nth = (struct tcphdr *)skb_put(nskb, tcp_hdr_size);
+	nth = skb_put(nskb, tcp_hdr_size);
 	nth->source	= th->source;
 	nth->dest	= th->dest;
 	nth->seq	= htonl(recv_seq - 1);
@@ -192,7 +192,7 @@ synproxy_send_server_ack(struct net *net,
 	niph = synproxy_build_ip(net, nskb, &iph->daddr, &iph->saddr);
 
 	skb_reset_transport_header(nskb);
-	nth = (struct tcphdr *)skb_put(nskb, tcp_hdr_size);
+	nth = skb_put(nskb, tcp_hdr_size);
 	nth->source	= th->dest;
 	nth->dest	= th->source;
 	nth->seq	= htonl(ntohl(th->ack_seq));
@@ -230,7 +230,7 @@ synproxy_send_client_ack(struct net *net,
 	niph = synproxy_build_ip(net, nskb, &iph->saddr, &iph->daddr);
 
 	skb_reset_transport_header(nskb);
-	nth = (struct tcphdr *)skb_put(nskb, tcp_hdr_size);
+	nth = skb_put(nskb, tcp_hdr_size);
 	nth->source	= th->source;
 	nth->dest	= th->dest;
 	nth->seq	= htonl(ntohl(th->seq) + 1);
diff --git a/net/ipv6/netfilter/nf_reject_ipv6.c b/net/ipv6/netfilter/nf_reject_ipv6.c
index f63b18e..2485840 100644
--- a/net/ipv6/netfilter/nf_reject_ipv6.c
+++ b/net/ipv6/netfilter/nf_reject_ipv6.c
@@ -95,7 +95,7 @@ void nf_reject_ip6_tcphdr_put(struct sk_buff *nskb,
 	int needs_ack;
 
 	skb_reset_transport_header(nskb);
-	tcph = (struct tcphdr *)skb_put(nskb, sizeof(struct tcphdr));
+	tcph = skb_put(nskb, sizeof(struct tcphdr));
 	/* Truncate to length (no data) */
 	tcph->doff = sizeof(struct tcphdr)/4;
 	tcph->source = oth->dest;
diff --git a/net/irda/irlap_frame.c b/net/irda/irlap_frame.c
index bf56ac7..82e71e5 100644
--- a/net/irda/irlap_frame.c
+++ b/net/irda/irlap_frame.c
@@ -133,7 +133,7 @@ void irlap_send_snrm_frame(struct irlap_cb *self, struct qos_info *qos)
 	if (!tx_skb)
 		return;
 
-	frame = (struct snrm_frame *) skb_put(tx_skb, 2);
+	frame = skb_put(tx_skb, 2);
 
 	/* Insert connection address field */
 	if (qos)
@@ -228,7 +228,7 @@ void irlap_send_ua_response_frame(struct irlap_cb *self, struct qos_info *qos)
 	if (!tx_skb)
 		return;
 
-	frame = (struct ua_frame *) skb_put(tx_skb, 10);
+	frame = skb_put(tx_skb, 10);
 
 	/* Build UA response */
 	frame->caddr = self->caddr;
@@ -268,7 +268,7 @@ void irlap_send_dm_frame( struct irlap_cb *self)
 	if (!tx_skb)
 		return;
 
-	frame = (struct dm_frame *)skb_put(tx_skb, 2);
+	frame = skb_put(tx_skb, 2);
 
 	if (self->state == LAP_NDM)
 		frame->caddr = CBROADCAST;
@@ -298,7 +298,7 @@ void irlap_send_disc_frame(struct irlap_cb *self)
 	if (!tx_skb)
 		return;
 
-	frame = (struct disc_frame *)skb_put(tx_skb, 2);
+	frame = skb_put(tx_skb, 2);
 
 	frame->caddr = self->caddr | CMD_FRAME;
 	frame->control = DISC_CMD | PF_BIT;
@@ -587,7 +587,7 @@ void irlap_send_rr_frame(struct irlap_cb *self, int command)
 	if (!tx_skb)
 		return;
 
-	frame = (struct rr_frame *)skb_put(tx_skb, 2);
+	frame = skb_put(tx_skb, 2);
 
 	frame->caddr = self->caddr;
 	frame->caddr |= (command) ? CMD_FRAME : 0;
@@ -612,7 +612,7 @@ void irlap_send_rd_frame(struct irlap_cb *self)
 	if (!tx_skb)
 		return;
 
-	frame = (struct rd_frame *)skb_put(tx_skb, 2);
+	frame = skb_put(tx_skb, 2);
 
 	frame->caddr = self->caddr;
 	frame->control = RD_RSP | PF_BIT;
@@ -1202,14 +1202,13 @@ void irlap_send_test_frame(struct irlap_cb *self, __u8 caddr, __u32 daddr,
 
 	/* Broadcast frames must include saddr and daddr fields */
 	if (caddr == CBROADCAST) {
-		frame = (struct test_frame *)
-			skb_put(tx_skb, sizeof(struct test_frame));
+		frame = skb_put(tx_skb, sizeof(struct test_frame));
 
 		/* Insert the swapped addresses */
 		frame->saddr = cpu_to_le32(self->saddr);
 		frame->daddr = cpu_to_le32(daddr);
 	} else
-		frame = (struct test_frame *) skb_put(tx_skb, LAP_ADDR_HEADER + LAP_CTRL_HEADER);
+		frame = skb_put(tx_skb, LAP_ADDR_HEADER + LAP_CTRL_HEADER);
 
 	frame->caddr = caddr;
 	frame->control = TEST_RSP | PF_BIT;
diff --git a/net/key/af_key.c b/net/key/af_key.c
index 3ebb426..daa4e90 100644
--- a/net/key/af_key.c
+++ b/net/key/af_key.c
@@ -349,7 +349,7 @@ static int pfkey_error(const struct sadb_msg *orig, int err, struct sock *sk)
 		err = EINVAL;
 	BUG_ON(err <= 0 || err >= 256);
 
-	hdr = (struct sadb_msg *) skb_put(skb, sizeof(struct sadb_msg));
+	hdr = skb_put(skb, sizeof(struct sadb_msg));
 	pfkey_hdr_dup(hdr, orig);
 	hdr->sadb_msg_errno = (uint8_t) err;
 	hdr->sadb_msg_len = (sizeof(struct sadb_msg) /
@@ -810,12 +810,12 @@ static struct sk_buff *__pfkey_xfrm_state2msg(const struct xfrm_state *x,
 		return ERR_PTR(-ENOBUFS);
 
 	/* call should fill header later */
-	hdr = (struct sadb_msg *) skb_put(skb, sizeof(struct sadb_msg));
+	hdr = skb_put(skb, sizeof(struct sadb_msg));
 	memset(hdr, 0, size);	/* XXX do we need this ? */
 	hdr->sadb_msg_len = size / sizeof(uint64_t);
 
 	/* sa */
-	sa = (struct sadb_sa *)  skb_put(skb, sizeof(struct sadb_sa));
+	sa = skb_put(skb, sizeof(struct sadb_sa));
 	sa->sadb_sa_len = sizeof(struct sadb_sa)/sizeof(uint64_t);
 	sa->sadb_sa_exttype = SADB_EXT_SA;
 	sa->sadb_sa_spi = x->id.spi;
@@ -862,8 +862,7 @@ static struct sk_buff *__pfkey_xfrm_state2msg(const struct xfrm_state *x,
 
 	/* hard time */
 	if (hsc & 2) {
-		lifetime = (struct sadb_lifetime *)  skb_put(skb,
-							     sizeof(struct sadb_lifetime));
+		lifetime = skb_put(skb, sizeof(struct sadb_lifetime));
 		lifetime->sadb_lifetime_len =
 			sizeof(struct sadb_lifetime)/sizeof(uint64_t);
 		lifetime->sadb_lifetime_exttype = SADB_EXT_LIFETIME_HARD;
@@ -874,8 +873,7 @@ static struct sk_buff *__pfkey_xfrm_state2msg(const struct xfrm_state *x,
 	}
 	/* soft time */
 	if (hsc & 1) {
-		lifetime = (struct sadb_lifetime *)  skb_put(skb,
-							     sizeof(struct sadb_lifetime));
+		lifetime = skb_put(skb, sizeof(struct sadb_lifetime));
 		lifetime->sadb_lifetime_len =
 			sizeof(struct sadb_lifetime)/sizeof(uint64_t);
 		lifetime->sadb_lifetime_exttype = SADB_EXT_LIFETIME_SOFT;
@@ -885,8 +883,7 @@ static struct sk_buff *__pfkey_xfrm_state2msg(const struct xfrm_state *x,
 		lifetime->sadb_lifetime_usetime = x->lft.soft_use_expires_seconds;
 	}
 	/* current time */
-	lifetime = (struct sadb_lifetime *)  skb_put(skb,
-						     sizeof(struct sadb_lifetime));
+	lifetime = skb_put(skb, sizeof(struct sadb_lifetime));
 	lifetime->sadb_lifetime_len =
 		sizeof(struct sadb_lifetime)/sizeof(uint64_t);
 	lifetime->sadb_lifetime_exttype = SADB_EXT_LIFETIME_CURRENT;
@@ -895,8 +892,7 @@ static struct sk_buff *__pfkey_xfrm_state2msg(const struct xfrm_state *x,
 	lifetime->sadb_lifetime_addtime = x->curlft.add_time;
 	lifetime->sadb_lifetime_usetime = x->curlft.use_time;
 	/* src address */
-	addr = (struct sadb_address*) skb_put(skb,
-					      sizeof(struct sadb_address)+sockaddr_size);
+	addr = skb_put(skb, sizeof(struct sadb_address) + sockaddr_size);
 	addr->sadb_address_len =
 		(sizeof(struct sadb_address)+sockaddr_size)/
 			sizeof(uint64_t);
@@ -915,8 +911,7 @@ static struct sk_buff *__pfkey_xfrm_state2msg(const struct xfrm_state *x,
 		BUG();
 
 	/* dst address */
-	addr = (struct sadb_address*) skb_put(skb,
-					      sizeof(struct sadb_address)+sockaddr_size);
+	addr = skb_put(skb, sizeof(struct sadb_address) + sockaddr_size);
 	addr->sadb_address_len =
 		(sizeof(struct sadb_address)+sockaddr_size)/
 			sizeof(uint64_t);
@@ -933,8 +928,8 @@ static struct sk_buff *__pfkey_xfrm_state2msg(const struct xfrm_state *x,
 
 	if (!xfrm_addr_equal(&x->sel.saddr, &x->props.saddr,
 			     x->props.family)) {
-		addr = (struct sadb_address*) skb_put(skb,
-			sizeof(struct sadb_address)+sockaddr_size);
+		addr = skb_put(skb,
+			       sizeof(struct sadb_address) + sockaddr_size);
 		addr->sadb_address_len =
 			(sizeof(struct sadb_address)+sockaddr_size)/
 			sizeof(uint64_t);
@@ -951,8 +946,7 @@ static struct sk_buff *__pfkey_xfrm_state2msg(const struct xfrm_state *x,
 
 	/* auth key */
 	if (add_keys && auth_key_size) {
-		key = (struct sadb_key *) skb_put(skb,
-						  sizeof(struct sadb_key)+auth_key_size);
+		key = skb_put(skb, sizeof(struct sadb_key) + auth_key_size);
 		key->sadb_key_len = (sizeof(struct sadb_key) + auth_key_size) /
 			sizeof(uint64_t);
 		key->sadb_key_exttype = SADB_EXT_KEY_AUTH;
@@ -962,8 +956,7 @@ static struct sk_buff *__pfkey_xfrm_state2msg(const struct xfrm_state *x,
 	}
 	/* encrypt key */
 	if (add_keys && encrypt_key_size) {
-		key = (struct sadb_key *) skb_put(skb,
-						  sizeof(struct sadb_key)+encrypt_key_size);
+		key = skb_put(skb, sizeof(struct sadb_key) + encrypt_key_size);
 		key->sadb_key_len = (sizeof(struct sadb_key) +
 				     encrypt_key_size) / sizeof(uint64_t);
 		key->sadb_key_exttype = SADB_EXT_KEY_ENCRYPT;
@@ -974,7 +967,7 @@ static struct sk_buff *__pfkey_xfrm_state2msg(const struct xfrm_state *x,
 	}
 
 	/* sa */
-	sa2 = (struct sadb_x_sa2 *)  skb_put(skb, sizeof(struct sadb_x_sa2));
+	sa2 = skb_put(skb, sizeof(struct sadb_x_sa2));
 	sa2->sadb_x_sa2_len = sizeof(struct sadb_x_sa2)/sizeof(uint64_t);
 	sa2->sadb_x_sa2_exttype = SADB_X_EXT_SA2;
 	if ((mode = pfkey_mode_from_xfrm(x->props.mode)) < 0) {
@@ -992,7 +985,7 @@ static struct sk_buff *__pfkey_xfrm_state2msg(const struct xfrm_state *x,
 		struct sadb_x_nat_t_port *n_port;
 
 		/* type */
-		n_type = (struct sadb_x_nat_t_type*) skb_put(skb, sizeof(*n_type));
+		n_type = skb_put(skb, sizeof(*n_type));
 		n_type->sadb_x_nat_t_type_len = sizeof(*n_type)/sizeof(uint64_t);
 		n_type->sadb_x_nat_t_type_exttype = SADB_X_EXT_NAT_T_TYPE;
 		n_type->sadb_x_nat_t_type_type = natt->encap_type;
@@ -1001,14 +994,14 @@ static struct sk_buff *__pfkey_xfrm_state2msg(const struct xfrm_state *x,
 		n_type->sadb_x_nat_t_type_reserved[2] = 0;
 
 		/* source port */
-		n_port = (struct sadb_x_nat_t_port*) skb_put(skb, sizeof (*n_port));
+		n_port = skb_put(skb, sizeof(*n_port));
 		n_port->sadb_x_nat_t_port_len = sizeof(*n_port)/sizeof(uint64_t);
 		n_port->sadb_x_nat_t_port_exttype = SADB_X_EXT_NAT_T_SPORT;
 		n_port->sadb_x_nat_t_port_port = natt->encap_sport;
 		n_port->sadb_x_nat_t_port_reserved = 0;
 
 		/* dest port */
-		n_port = (struct sadb_x_nat_t_port*) skb_put(skb, sizeof (*n_port));
+		n_port = skb_put(skb, sizeof(*n_port));
 		n_port->sadb_x_nat_t_port_len = sizeof(*n_port)/sizeof(uint64_t);
 		n_port->sadb_x_nat_t_port_exttype = SADB_X_EXT_NAT_T_DPORT;
 		n_port->sadb_x_nat_t_port_port = natt->encap_dport;
@@ -1017,8 +1010,8 @@ static struct sk_buff *__pfkey_xfrm_state2msg(const struct xfrm_state *x,
 
 	/* security context */
 	if (xfrm_ctx) {
-		sec_ctx = (struct sadb_x_sec_ctx *) skb_put(skb,
-				sizeof(struct sadb_x_sec_ctx) + ctx_size);
+		sec_ctx = skb_put(skb,
+				  sizeof(struct sadb_x_sec_ctx) + ctx_size);
 		sec_ctx->sadb_x_sec_len =
 		  (sizeof(struct sadb_x_sec_ctx) + ctx_size) / sizeof(uint64_t);
 		sec_ctx->sadb_x_sec_exttype = SADB_X_EXT_SEC_CTX;
@@ -1617,7 +1610,7 @@ static struct sk_buff *compose_sadb_supported(const struct sadb_msg *orig,
 	if (!skb)
 		goto out_put_algs;
 
-	hdr = (struct sadb_msg *) skb_put(skb, sizeof(*hdr));
+	hdr = skb_put(skb, sizeof(*hdr));
 	pfkey_hdr_dup(hdr, orig);
 	hdr->sadb_msg_errno = 0;
 	hdr->sadb_msg_len = len / sizeof(uint64_t);
@@ -1626,7 +1619,7 @@ static struct sk_buff *compose_sadb_supported(const struct sadb_msg *orig,
 		struct sadb_supported *sp;
 		struct sadb_alg *ap;
 
-		sp = (struct sadb_supported *) skb_put(skb, auth_len);
+		sp = skb_put(skb, auth_len);
 		ap = (struct sadb_alg *) (sp + 1);
 
 		sp->sadb_supported_len = auth_len / sizeof(uint64_t);
@@ -1647,7 +1640,7 @@ static struct sk_buff *compose_sadb_supported(const struct sadb_msg *orig,
 		struct sadb_supported *sp;
 		struct sadb_alg *ap;
 
-		sp = (struct sadb_supported *) skb_put(skb, enc_len);
+		sp = skb_put(skb, enc_len);
 		ap = (struct sadb_alg *) (sp + 1);
 
 		sp->sadb_supported_len = enc_len / sizeof(uint64_t);
@@ -1721,7 +1714,7 @@ static int key_notify_sa_flush(const struct km_event *c)
 	skb = alloc_skb(sizeof(struct sadb_msg) + 16, GFP_ATOMIC);
 	if (!skb)
 		return -ENOBUFS;
-	hdr = (struct sadb_msg *) skb_put(skb, sizeof(struct sadb_msg));
+	hdr = skb_put(skb, sizeof(struct sadb_msg));
 	hdr->sadb_msg_satype = pfkey_proto2satype(c->data.proto);
 	hdr->sadb_msg_type = SADB_FLUSH;
 	hdr->sadb_msg_seq = c->seq;
@@ -2046,12 +2039,11 @@ static int pfkey_xfrm_policy2msg(struct sk_buff *skb, const struct xfrm_policy *
 	size = pfkey_xfrm_policy2msg_size(xp);
 
 	/* call should fill header later */
-	hdr = (struct sadb_msg *) skb_put(skb, sizeof(struct sadb_msg));
+	hdr = skb_put(skb, sizeof(struct sadb_msg));
 	memset(hdr, 0, size);	/* XXX do we need this ? */
 
 	/* src address */
-	addr = (struct sadb_address*) skb_put(skb,
-					      sizeof(struct sadb_address)+sockaddr_size);
+	addr = skb_put(skb, sizeof(struct sadb_address) + sockaddr_size);
 	addr->sadb_address_len =
 		(sizeof(struct sadb_address)+sockaddr_size)/
 			sizeof(uint64_t);
@@ -2066,8 +2058,7 @@ static int pfkey_xfrm_policy2msg(struct sk_buff *skb, const struct xfrm_policy *
 		BUG();
 
 	/* dst address */
-	addr = (struct sadb_address*) skb_put(skb,
-					      sizeof(struct sadb_address)+sockaddr_size);
+	addr = skb_put(skb, sizeof(struct sadb_address) + sockaddr_size);
 	addr->sadb_address_len =
 		(sizeof(struct sadb_address)+sockaddr_size)/
 			sizeof(uint64_t);
@@ -2081,8 +2072,7 @@ static int pfkey_xfrm_policy2msg(struct sk_buff *skb, const struct xfrm_policy *
 			    xp->family);
 
 	/* hard time */
-	lifetime = (struct sadb_lifetime *)  skb_put(skb,
-						     sizeof(struct sadb_lifetime));
+	lifetime = skb_put(skb, sizeof(struct sadb_lifetime));
 	lifetime->sadb_lifetime_len =
 		sizeof(struct sadb_lifetime)/sizeof(uint64_t);
 	lifetime->sadb_lifetime_exttype = SADB_EXT_LIFETIME_HARD;
@@ -2091,8 +2081,7 @@ static int pfkey_xfrm_policy2msg(struct sk_buff *skb, const struct xfrm_policy *
 	lifetime->sadb_lifetime_addtime = xp->lft.hard_add_expires_seconds;
 	lifetime->sadb_lifetime_usetime = xp->lft.hard_use_expires_seconds;
 	/* soft time */
-	lifetime = (struct sadb_lifetime *)  skb_put(skb,
-						     sizeof(struct sadb_lifetime));
+	lifetime = skb_put(skb, sizeof(struct sadb_lifetime));
 	lifetime->sadb_lifetime_len =
 		sizeof(struct sadb_lifetime)/sizeof(uint64_t);
 	lifetime->sadb_lifetime_exttype = SADB_EXT_LIFETIME_SOFT;
@@ -2101,8 +2090,7 @@ static int pfkey_xfrm_policy2msg(struct sk_buff *skb, const struct xfrm_policy *
 	lifetime->sadb_lifetime_addtime = xp->lft.soft_add_expires_seconds;
 	lifetime->sadb_lifetime_usetime = xp->lft.soft_use_expires_seconds;
 	/* current time */
-	lifetime = (struct sadb_lifetime *)  skb_put(skb,
-						     sizeof(struct sadb_lifetime));
+	lifetime = skb_put(skb, sizeof(struct sadb_lifetime));
 	lifetime->sadb_lifetime_len =
 		sizeof(struct sadb_lifetime)/sizeof(uint64_t);
 	lifetime->sadb_lifetime_exttype = SADB_EXT_LIFETIME_CURRENT;
@@ -2111,7 +2099,7 @@ static int pfkey_xfrm_policy2msg(struct sk_buff *skb, const struct xfrm_policy *
 	lifetime->sadb_lifetime_addtime = xp->curlft.add_time;
 	lifetime->sadb_lifetime_usetime = xp->curlft.use_time;
 
-	pol = (struct sadb_x_policy *)  skb_put(skb, sizeof(struct sadb_x_policy));
+	pol = skb_put(skb, sizeof(struct sadb_x_policy));
 	pol->sadb_x_policy_len = sizeof(struct sadb_x_policy)/sizeof(uint64_t);
 	pol->sadb_x_policy_exttype = SADB_X_EXT_POLICY;
 	pol->sadb_x_policy_type = IPSEC_POLICY_DISCARD;
@@ -2139,7 +2127,7 @@ static int pfkey_xfrm_policy2msg(struct sk_buff *skb, const struct xfrm_policy *
 		} else {
 			size -= 2*socklen;
 		}
-		rq = (void*)skb_put(skb, req_size);
+		rq = skb_put(skb, req_size);
 		pol->sadb_x_policy_len += req_size/8;
 		memset(rq, 0, sizeof(*rq));
 		rq->sadb_x_ipsecrequest_len = req_size;
@@ -2169,7 +2157,7 @@ static int pfkey_xfrm_policy2msg(struct sk_buff *skb, const struct xfrm_policy *
 	if ((xfrm_ctx = xp->security)) {
 		int ctx_size = pfkey_xfrm_policy2sec_ctx_size(xp);
 
-		sec_ctx = (struct sadb_x_sec_ctx *) skb_put(skb, ctx_size);
+		sec_ctx = skb_put(skb, ctx_size);
 		sec_ctx->sadb_x_sec_len = ctx_size / sizeof(uint64_t);
 		sec_ctx->sadb_x_sec_exttype = SADB_X_EXT_SEC_CTX;
 		sec_ctx->sadb_x_ctx_doi = xfrm_ctx->ctx_doi;
@@ -2733,7 +2721,7 @@ static int key_notify_policy_flush(const struct km_event *c)
 	skb_out = alloc_skb(sizeof(struct sadb_msg) + 16, GFP_ATOMIC);
 	if (!skb_out)
 		return -ENOBUFS;
-	hdr = (struct sadb_msg *) skb_put(skb_out, sizeof(struct sadb_msg));
+	hdr = skb_put(skb_out, sizeof(struct sadb_msg));
 	hdr->sadb_msg_type = SADB_X_SPDFLUSH;
 	hdr->sadb_msg_seq = c->seq;
 	hdr->sadb_msg_pid = c->portid;
@@ -2917,7 +2905,7 @@ static void dump_ah_combs(struct sk_buff *skb, const struct xfrm_tmpl *t)
 	struct sadb_prop *p;
 	int i;
 
-	p = (struct sadb_prop*)skb_put(skb, sizeof(struct sadb_prop));
+	p = skb_put(skb, sizeof(struct sadb_prop));
 	p->sadb_prop_len = sizeof(struct sadb_prop)/8;
 	p->sadb_prop_exttype = SADB_EXT_PROPOSAL;
 	p->sadb_prop_replay = 32;
@@ -2951,7 +2939,7 @@ static void dump_esp_combs(struct sk_buff *skb, const struct xfrm_tmpl *t)
 	struct sadb_prop *p;
 	int i, k;
 
-	p = (struct sadb_prop*)skb_put(skb, sizeof(struct sadb_prop));
+	p = skb_put(skb, sizeof(struct sadb_prop));
 	p->sadb_prop_len = sizeof(struct sadb_prop)/8;
 	p->sadb_prop_exttype = SADB_EXT_PROPOSAL;
 	p->sadb_prop_replay = 32;
@@ -2977,7 +2965,7 @@ static void dump_esp_combs(struct sk_buff *skb, const struct xfrm_tmpl *t)
 				continue;
 			if (!(aalg_tmpl_set(t, aalg) && aalg->available))
 				continue;
-			c = (struct sadb_comb*)skb_put(skb, sizeof(struct sadb_comb));
+			c = skb_put(skb, sizeof(struct sadb_comb));
 			memset(c, 0, sizeof(*c));
 			p->sadb_prop_len += sizeof(struct sadb_comb)/8;
 			c->sadb_comb_auth = aalg->desc.sadb_alg_id;
@@ -3144,7 +3132,7 @@ static int pfkey_send_acquire(struct xfrm_state *x, struct xfrm_tmpl *t, struct
 	if (skb == NULL)
 		return -ENOMEM;
 
-	hdr = (struct sadb_msg *) skb_put(skb, sizeof(struct sadb_msg));
+	hdr = skb_put(skb, sizeof(struct sadb_msg));
 	hdr->sadb_msg_version = PF_KEY_V2;
 	hdr->sadb_msg_type = SADB_ACQUIRE;
 	hdr->sadb_msg_satype = pfkey_proto2satype(x->id.proto);
@@ -3155,8 +3143,7 @@ static int pfkey_send_acquire(struct xfrm_state *x, struct xfrm_tmpl *t, struct
 	hdr->sadb_msg_pid = 0;
 
 	/* src address */
-	addr = (struct sadb_address*) skb_put(skb,
-					      sizeof(struct sadb_address)+sockaddr_size);
+	addr = skb_put(skb, sizeof(struct sadb_address) + sockaddr_size);
 	addr->sadb_address_len =
 		(sizeof(struct sadb_address)+sockaddr_size)/
 			sizeof(uint64_t);
@@ -3171,8 +3158,7 @@ static int pfkey_send_acquire(struct xfrm_state *x, struct xfrm_tmpl *t, struct
 		BUG();
 
 	/* dst address */
-	addr = (struct sadb_address*) skb_put(skb,
-					      sizeof(struct sadb_address)+sockaddr_size);
+	addr = skb_put(skb, sizeof(struct sadb_address) + sockaddr_size);
 	addr->sadb_address_len =
 		(sizeof(struct sadb_address)+sockaddr_size)/
 			sizeof(uint64_t);
@@ -3186,7 +3172,7 @@ static int pfkey_send_acquire(struct xfrm_state *x, struct xfrm_tmpl *t, struct
 	if (!addr->sadb_address_prefixlen)
 		BUG();
 
-	pol = (struct sadb_x_policy *)  skb_put(skb, sizeof(struct sadb_x_policy));
+	pol = skb_put(skb, sizeof(struct sadb_x_policy));
 	pol->sadb_x_policy_len = sizeof(struct sadb_x_policy)/sizeof(uint64_t);
 	pol->sadb_x_policy_exttype = SADB_X_EXT_POLICY;
 	pol->sadb_x_policy_type = IPSEC_POLICY_IPSEC;
@@ -3203,8 +3189,8 @@ static int pfkey_send_acquire(struct xfrm_state *x, struct xfrm_tmpl *t, struct
 
 	/* security context */
 	if (xfrm_ctx) {
-		sec_ctx = (struct sadb_x_sec_ctx *) skb_put(skb,
-				sizeof(struct sadb_x_sec_ctx) + ctx_size);
+		sec_ctx = skb_put(skb,
+				  sizeof(struct sadb_x_sec_ctx) + ctx_size);
 		sec_ctx->sadb_x_sec_len =
 		  (sizeof(struct sadb_x_sec_ctx) + ctx_size) / sizeof(uint64_t);
 		sec_ctx->sadb_x_sec_exttype = SADB_X_EXT_SEC_CTX;
@@ -3346,7 +3332,7 @@ static int pfkey_send_new_mapping(struct xfrm_state *x, xfrm_address_t *ipaddr,
 	if (skb == NULL)
 		return -ENOMEM;
 
-	hdr = (struct sadb_msg *) skb_put(skb, sizeof(struct sadb_msg));
+	hdr = skb_put(skb, sizeof(struct sadb_msg));
 	hdr->sadb_msg_version = PF_KEY_V2;
 	hdr->sadb_msg_type = SADB_X_NAT_T_NEW_MAPPING;
 	hdr->sadb_msg_satype = satype;
@@ -3357,7 +3343,7 @@ static int pfkey_send_new_mapping(struct xfrm_state *x, xfrm_address_t *ipaddr,
 	hdr->sadb_msg_pid = 0;
 
 	/* SA */
-	sa = (struct sadb_sa *) skb_put(skb, sizeof(struct sadb_sa));
+	sa = skb_put(skb, sizeof(struct sadb_sa));
 	sa->sadb_sa_len = sizeof(struct sadb_sa)/sizeof(uint64_t);
 	sa->sadb_sa_exttype = SADB_EXT_SA;
 	sa->sadb_sa_spi = x->id.spi;
@@ -3368,8 +3354,7 @@ static int pfkey_send_new_mapping(struct xfrm_state *x, xfrm_address_t *ipaddr,
 	sa->sadb_sa_flags = 0;
 
 	/* ADDRESS_SRC (old addr) */
-	addr = (struct sadb_address*)
-		skb_put(skb, sizeof(struct sadb_address)+sockaddr_size);
+	addr = skb_put(skb, sizeof(struct sadb_address) + sockaddr_size);
 	addr->sadb_address_len =
 		(sizeof(struct sadb_address)+sockaddr_size)/
 			sizeof(uint64_t);
@@ -3384,15 +3369,14 @@ static int pfkey_send_new_mapping(struct xfrm_state *x, xfrm_address_t *ipaddr,
 		BUG();
 
 	/* NAT_T_SPORT (old port) */
-	n_port = (struct sadb_x_nat_t_port*) skb_put(skb, sizeof (*n_port));
+	n_port = skb_put(skb, sizeof(*n_port));
 	n_port->sadb_x_nat_t_port_len = sizeof(*n_port)/sizeof(uint64_t);
 	n_port->sadb_x_nat_t_port_exttype = SADB_X_EXT_NAT_T_SPORT;
 	n_port->sadb_x_nat_t_port_port = natt->encap_sport;
 	n_port->sadb_x_nat_t_port_reserved = 0;
 
 	/* ADDRESS_DST (new addr) */
-	addr = (struct sadb_address*)
-		skb_put(skb, sizeof(struct sadb_address)+sockaddr_size);
+	addr = skb_put(skb, sizeof(struct sadb_address) + sockaddr_size);
 	addr->sadb_address_len =
 		(sizeof(struct sadb_address)+sockaddr_size)/
 			sizeof(uint64_t);
@@ -3407,7 +3391,7 @@ static int pfkey_send_new_mapping(struct xfrm_state *x, xfrm_address_t *ipaddr,
 		BUG();
 
 	/* NAT_T_DPORT (new port) */
-	n_port = (struct sadb_x_nat_t_port*) skb_put(skb, sizeof (*n_port));
+	n_port = skb_put(skb, sizeof(*n_port));
 	n_port->sadb_x_nat_t_port_len = sizeof(*n_port)/sizeof(uint64_t);
 	n_port->sadb_x_nat_t_port_exttype = SADB_X_EXT_NAT_T_DPORT;
 	n_port->sadb_x_nat_t_port_port = sport;
@@ -3421,7 +3405,7 @@ static int set_sadb_address(struct sk_buff *skb, int sasize, int type,
 			    const struct xfrm_selector *sel)
 {
 	struct sadb_address *addr;
-	addr = (struct sadb_address *)skb_put(skb, sizeof(struct sadb_address) + sasize);
+	addr = skb_put(skb, sizeof(struct sadb_address) + sasize);
 	addr->sadb_address_len = (sizeof(struct sadb_address) + sasize)/8;
 	addr->sadb_address_exttype = type;
 	addr->sadb_address_proto = sel->proto;
@@ -3553,7 +3537,7 @@ static int pfkey_send_migrate(const struct xfrm_selector *sel, u8 dir, u8 type,
 	if (skb == NULL)
 		return -ENOMEM;
 
-	hdr = (struct sadb_msg *)skb_put(skb, sizeof(struct sadb_msg));
+	hdr = skb_put(skb, sizeof(struct sadb_msg));
 	hdr->sadb_msg_version = PF_KEY_V2;
 	hdr->sadb_msg_type = SADB_X_MIGRATE;
 	hdr->sadb_msg_satype = pfkey_proto2satype(m->proto);
@@ -3574,7 +3558,7 @@ static int pfkey_send_migrate(const struct xfrm_selector *sel, u8 dir, u8 type,
 	set_sadb_address(skb, sasize_sel, SADB_EXT_ADDRESS_DST, sel);
 
 	/* policy information */
-	pol = (struct sadb_x_policy *)skb_put(skb, sizeof(struct sadb_x_policy));
+	pol = skb_put(skb, sizeof(struct sadb_x_policy));
 	pol->sadb_x_policy_len = size_pol / 8;
 	pol->sadb_x_policy_exttype = SADB_X_EXT_POLICY;
 	pol->sadb_x_policy_type = IPSEC_POLICY_IPSEC;
diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c
index f9eb248..a354f19 100644
--- a/net/mac80211/cfg.c
+++ b/net/mac80211/cfg.c
@@ -1107,7 +1107,7 @@ static void ieee80211_send_layer2_update(struct sta_info *sta)
 	skb = dev_alloc_skb(sizeof(*msg));
 	if (!skb)
 		return;
-	msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg));
+	msg = skb_put(skb, sizeof(*msg));
 
 	/* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID)
 	 * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */
@@ -3414,7 +3414,7 @@ static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev,
 
 	skb_reserve(skb, local->hw.extra_tx_headroom);
 
-	nullfunc = (void *) skb_put(skb, size);
+	nullfunc = skb_put(skb, size);
 	nullfunc->frame_control = fc;
 	nullfunc->duration_id = 0;
 	memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN);
diff --git a/net/mac80211/ht.c b/net/mac80211/ht.c
index 927215d..c92df49 100644
--- a/net/mac80211/ht.c
+++ b/net/mac80211/ht.c
@@ -459,7 +459,7 @@ int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata,
 		return -ENOMEM;
 
 	skb_reserve(skb, local->hw.extra_tx_headroom);
-	action_frame = (void *)skb_put(skb, 27);
+	action_frame = skb_put(skb, 27);
 	memcpy(action_frame->da, da, ETH_ALEN);
 	memcpy(action_frame->sa, sdata->dev->dev_addr, ETH_ALEN);
 	memcpy(action_frame->bssid, bssid, ETH_ALEN);
diff --git a/net/mac80211/mesh.c b/net/mac80211/mesh.c
index 861697f..a550c70 100644
--- a/net/mac80211/mesh.c
+++ b/net/mac80211/mesh.c
@@ -1265,7 +1265,7 @@ static int mesh_fwd_csa_frame(struct ieee80211_sub_if_data *sdata,
 	if (!skb)
 		return -ENOMEM;
 	skb_reserve(skb, local->tx_headroom);
-	mgmt_fwd = (struct ieee80211_mgmt *) skb_put(skb, len);
+	mgmt_fwd = skb_put(skb, len);
 
 	/* offset_ttl is based on whether the secondary channel
 	 * offset is available or not. Subtract 1 from the mesh TTL
diff --git a/net/mac80211/mesh_ps.c b/net/mac80211/mesh_ps.c
index 96c987e..d8cd914 100644
--- a/net/mac80211/mesh_ps.c
+++ b/net/mac80211/mesh_ps.c
@@ -30,7 +30,7 @@ static struct sk_buff *mps_qos_null_get(struct sta_info *sta)
 		return NULL;
 	skb_reserve(skb, local->hw.extra_tx_headroom);
 
-	nullfunc = (struct ieee80211_hdr *) skb_put(skb, size);
+	nullfunc = skb_put(skb, size);
 	fc = cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_QOS_NULLFUNC);
 	ieee80211_fill_mesh_addresses(nullfunc, &fc, sta->sta.addr,
 				      sdata->vif.addr);
diff --git a/net/mac80211/sta_info.c b/net/mac80211/sta_info.c
index 46e1809..6961501 100644
--- a/net/mac80211/sta_info.c
+++ b/net/mac80211/sta_info.c
@@ -1312,7 +1312,7 @@ static void ieee80211_send_null_response(struct sta_info *sta, int tid,
 
 	skb_reserve(skb, local->hw.extra_tx_headroom);
 
-	nullfunc = (void *) skb_put(skb, size);
+	nullfunc = skb_put(skb, size);
 	nullfunc->frame_control = fc;
 	nullfunc->duration_id = 0;
 	memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN);
diff --git a/net/mac80211/tdls.c b/net/mac80211/tdls.c
index 8674067..709ef02 100644
--- a/net/mac80211/tdls.c
+++ b/net/mac80211/tdls.c
@@ -49,7 +49,7 @@ static void ieee80211_tdls_add_ext_capab(struct ieee80211_sub_if_data *sdata,
 			  !ifmgd->tdls_wider_bw_prohibited;
 	struct ieee80211_supported_band *sband = ieee80211_get_sband(sdata);
 	bool vht = sband && sband->vht_cap.vht_supported;
-	u8 *pos = (void *)skb_put(skb, 10);
+	u8 *pos = skb_put(skb, 10);
 
 	*pos++ = WLAN_EID_EXT_CAPABILITY;
 	*pos++ = 8; /* len */
@@ -168,7 +168,7 @@ static void ieee80211_tdls_add_oper_classes(struct ieee80211_sub_if_data *sdata,
 
 static void ieee80211_tdls_add_bss_coex_ie(struct sk_buff *skb)
 {
-	u8 *pos = (void *)skb_put(skb, 3);
+	u8 *pos = skb_put(skb, 3);
 
 	*pos++ = WLAN_EID_BSS_COEX_2040;
 	*pos++ = 1; /* len */
@@ -209,7 +209,7 @@ static void ieee80211_tdls_add_link_ie(struct ieee80211_sub_if_data *sdata,
 		rsp_addr = sdata->vif.addr;
 	}
 
-	lnkid = (void *)skb_put(skb, sizeof(struct ieee80211_tdls_lnkie));
+	lnkid = skb_put(skb, sizeof(struct ieee80211_tdls_lnkie));
 
 	lnkid->ie_type = WLAN_EID_LINK_ID;
 	lnkid->ie_len = sizeof(struct ieee80211_tdls_lnkie) - 2;
@@ -223,7 +223,7 @@ static void
 ieee80211_tdls_add_aid(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb)
 {
 	struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
-	u8 *pos = (void *)skb_put(skb, 4);
+	u8 *pos = skb_put(skb, 4);
 
 	*pos++ = WLAN_EID_AID;
 	*pos++ = 2; /* len */
@@ -745,7 +745,7 @@ ieee80211_prep_tdls_encap_data(struct wiphy *wiphy, struct net_device *dev,
 	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 	struct ieee80211_tdls_data *tf;
 
-	tf = (void *)skb_put(skb, offsetof(struct ieee80211_tdls_data, u));
+	tf = skb_put(skb, offsetof(struct ieee80211_tdls_data, u));
 
 	memcpy(tf->da, peer, ETH_ALEN);
 	memcpy(tf->sa, sdata->vif.addr, ETH_ALEN);
diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c
index 18c5d6e6..ec5a9a7 100644
--- a/net/mac80211/tx.c
+++ b/net/mac80211/tx.c
@@ -3874,7 +3874,7 @@ static void __ieee80211_beacon_add_tim(struct ieee80211_sub_if_data *sdata,
 			ps->dtim_count--;
 	}
 
-	tim = pos = (u8 *) skb_put(skb, 6);
+	tim = pos = skb_put(skb, 6);
 	*pos++ = WLAN_EID_TIM;
 	*pos++ = 4;
 	*pos++ = ps->dtim_count;
diff --git a/net/mac80211/wpa.c b/net/mac80211/wpa.c
index cc19614..0d722ea 100644
--- a/net/mac80211/wpa.c
+++ b/net/mac80211/wpa.c
@@ -949,7 +949,7 @@ ieee80211_crypto_aes_cmac_encrypt(struct ieee80211_tx_data *tx)
 	if (WARN_ON(skb_tailroom(skb) < sizeof(*mmie)))
 		return TX_DROP;
 
-	mmie = (struct ieee80211_mmie *) skb_put(skb, sizeof(*mmie));
+	mmie = skb_put(skb, sizeof(*mmie));
 	mmie->element_id = WLAN_EID_MMIE;
 	mmie->length = sizeof(*mmie) - 2;
 	mmie->key_id = cpu_to_le16(key->conf.keyidx);
@@ -993,7 +993,7 @@ ieee80211_crypto_aes_cmac_256_encrypt(struct ieee80211_tx_data *tx)
 	if (WARN_ON(skb_tailroom(skb) < sizeof(*mmie)))
 		return TX_DROP;
 
-	mmie = (struct ieee80211_mmie_16 *)skb_put(skb, sizeof(*mmie));
+	mmie = skb_put(skb, sizeof(*mmie));
 	mmie->element_id = WLAN_EID_MMIE;
 	mmie->length = sizeof(*mmie) - 2;
 	mmie->key_id = cpu_to_le16(key->conf.keyidx);
@@ -1138,7 +1138,7 @@ ieee80211_crypto_aes_gmac_encrypt(struct ieee80211_tx_data *tx)
 	if (WARN_ON(skb_tailroom(skb) < sizeof(*mmie)))
 		return TX_DROP;
 
-	mmie = (struct ieee80211_mmie_16 *)skb_put(skb, sizeof(*mmie));
+	mmie = skb_put(skb, sizeof(*mmie));
 	mmie->element_id = WLAN_EID_MMIE;
 	mmie->length = sizeof(*mmie) - 2;
 	mmie->key_id = cpu_to_le16(key->conf.keyidx);
diff --git a/net/netfilter/nfnetlink_log.c b/net/netfilter/nfnetlink_log.c
index da97049..94ec0d0 100644
--- a/net/netfilter/nfnetlink_log.c
+++ b/net/netfilter/nfnetlink_log.c
@@ -590,7 +590,7 @@ __build_packet_message(struct nfnl_log_net *log,
 		if (skb_tailroom(inst->skb) < nla_total_size(data_len))
 			goto nla_put_failure;
 
-		nla = (struct nlattr *)skb_put(inst->skb, nla_total_size(data_len));
+		nla = skb_put(inst->skb, nla_total_size(data_len));
 		nla->nla_type = NFULA_PAYLOAD;
 		nla->nla_len = size;
 
diff --git a/net/netfilter/nfnetlink_queue.c b/net/netfilter/nfnetlink_queue.c
index 8a0f218..1b17a1b 100644
--- a/net/netfilter/nfnetlink_queue.c
+++ b/net/netfilter/nfnetlink_queue.c
@@ -589,7 +589,7 @@ nfqnl_build_packet_message(struct net *net, struct nfqnl_instance *queue,
 		if (skb_tailroom(skb) < sizeof(*nla) + hlen)
 			goto nla_put_failure;
 
-		nla = (struct nlattr *)skb_put(skb, sizeof(*nla));
+		nla = skb_put(skb, sizeof(*nla));
 		nla->nla_type = NFQA_PAYLOAD;
 		nla->nla_len = nla_attr_size(data_len);
 
diff --git a/net/netlink/af_netlink.c b/net/netlink/af_netlink.c
index bd24a97..a88745e 100644
--- a/net/netlink/af_netlink.c
+++ b/net/netlink/af_netlink.c
@@ -2104,7 +2104,7 @@ __nlmsg_put(struct sk_buff *skb, u32 portid, u32 seq, int type, int len, int fla
 	struct nlmsghdr *nlh;
 	int size = nlmsg_msg_size(len);
 
-	nlh = (struct nlmsghdr *)skb_put(skb, NLMSG_ALIGN(size));
+	nlh = skb_put(skb, NLMSG_ALIGN(size));
 	nlh->nlmsg_type = type;
 	nlh->nlmsg_len = size;
 	nlh->nlmsg_flags = flags;
diff --git a/net/nfc/digital_core.c b/net/nfc/digital_core.c
index 0fd5518..fec47a7 100644
--- a/net/nfc/digital_core.c
+++ b/net/nfc/digital_core.c
@@ -74,8 +74,8 @@ void digital_skb_add_crc(struct sk_buff *skb, crc_func_t crc_func, u16 init,
 	if (msb_first)
 		crc = __fswab16(crc);
 
-	*skb_put(skb, 1) = crc & 0xFF;
-	*skb_put(skb, 1) = (crc >> 8) & 0xFF;
+	*(u8 *)skb_put(skb, 1) = crc & 0xFF;
+	*(u8 *)skb_put(skb, 1) = (crc >> 8) & 0xFF;
 }
 
 int digital_skb_check_crc(struct sk_buff *skb, crc_func_t crc_func,
diff --git a/net/nfc/digital_dep.c b/net/nfc/digital_dep.c
index f44f75a..82471af 100644
--- a/net/nfc/digital_dep.c
+++ b/net/nfc/digital_dep.c
@@ -654,7 +654,7 @@ static int digital_in_send_rtox(struct nfc_digital_dev *ddev,
 	if (!skb)
 		return -ENOMEM;
 
-	*skb_put(skb, 1) = rtox;
+	*(u8 *)skb_put(skb, 1) = rtox;
 
 	skb_push(skb, sizeof(struct digital_dep_req_res));
 
diff --git a/net/nfc/digital_technology.c b/net/nfc/digital_technology.c
index d9080de..fae6d31 100644
--- a/net/nfc/digital_technology.c
+++ b/net/nfc/digital_technology.c
@@ -266,8 +266,8 @@ static int digital_in_send_rats(struct nfc_digital_dev *ddev,
 	if (!skb)
 		return -ENOMEM;
 
-	*skb_put(skb, 1) = DIGITAL_RATS_BYTE1;
-	*skb_put(skb, 1) = DIGITAL_RATS_PARAM;
+	*(u8 *)skb_put(skb, 1) = DIGITAL_RATS_BYTE1;
+	*(u8 *)skb_put(skb, 1) = DIGITAL_RATS_PARAM;
 
 	rc = digital_in_send_cmd(ddev, skb, 30, digital_in_recv_ats,
 				 target);
@@ -470,8 +470,8 @@ static int digital_in_send_sdd_req(struct nfc_digital_dev *ddev,
 	else
 		sel_cmd = DIGITAL_CMD_SEL_REQ_CL3;
 
-	*skb_put(skb, sizeof(u8)) = sel_cmd;
-	*skb_put(skb, sizeof(u8)) = DIGITAL_SDD_REQ_SEL_PAR;
+	*(u8 *)skb_put(skb, sizeof(u8)) = sel_cmd;
+	*(u8 *)skb_put(skb, sizeof(u8)) = DIGITAL_SDD_REQ_SEL_PAR;
 
 	return digital_in_send_cmd(ddev, skb, 30, digital_in_recv_sdd_res,
 				   target);
@@ -541,7 +541,7 @@ int digital_in_send_sens_req(struct nfc_digital_dev *ddev, u8 rf_tech)
 	if (!skb)
 		return -ENOMEM;
 
-	*skb_put(skb, sizeof(u8)) = DIGITAL_CMD_SENS_REQ;
+	*(u8 *)skb_put(skb, sizeof(u8)) = DIGITAL_CMD_SENS_REQ;
 
 	rc = digital_in_send_cmd(ddev, skb, 30, digital_in_recv_sens_res, NULL);
 	if (rc)
@@ -625,8 +625,7 @@ static int digital_in_send_attrib_req(struct nfc_digital_dev *ddev,
 	if (!skb)
 		return -ENOMEM;
 
-	attrib_req = (struct digital_attrib_req *)skb_put(skb,
-							  sizeof(*attrib_req));
+	attrib_req = skb_put(skb, sizeof(*attrib_req));
 
 	attrib_req->cmd = DIGITAL_CMD_ATTRIB_REQ;
 	memcpy(attrib_req->nfcid0, sensb_res->nfcid0,
@@ -730,8 +729,7 @@ int digital_in_send_sensb_req(struct nfc_digital_dev *ddev, u8 rf_tech)
 	if (!skb)
 		return -ENOMEM;
 
-	sensb_req = (struct digital_sensb_req *)skb_put(skb,
-							sizeof(*sensb_req));
+	sensb_req = skb_put(skb, sizeof(*sensb_req));
 
 	sensb_req->cmd = DIGITAL_CMD_SENSB_REQ;
 	sensb_req->afi = 0x00; /* All families and sub-families */
@@ -939,7 +937,7 @@ static int digital_tg_send_sel_res(struct nfc_digital_dev *ddev)
 	if (!skb)
 		return -ENOMEM;
 
-	*skb_put(skb, 1) = DIGITAL_SEL_RES_NFC_DEP;
+	*(u8 *)skb_put(skb, 1) = DIGITAL_SEL_RES_NFC_DEP;
 
 	if (!DIGITAL_DRV_CAPS_TG_CRC(ddev))
 		digital_skb_add_crc_a(skb);
diff --git a/net/nfc/hci/core.c b/net/nfc/hci/core.c
index 8741ad4..3a0c945 100644
--- a/net/nfc/hci/core.c
+++ b/net/nfc/hci/core.c
@@ -874,7 +874,7 @@ static void nfc_hci_recv_from_llc(struct nfc_hci_dev *hdev, struct sk_buff *skb)
 			return;
 		}
 
-		*skb_put(hcp_skb, NFC_HCI_HCP_PACKET_HEADER_LEN) = pipe;
+		*(u8 *)skb_put(hcp_skb, NFC_HCI_HCP_PACKET_HEADER_LEN) = pipe;
 
 		skb_queue_walk(&hdev->rx_hcp_frags, frag_skb) {
 			msg_len = frag_skb->len - NFC_HCI_HCP_PACKET_HEADER_LEN;
diff --git a/net/nfc/hci/llc_shdlc.c b/net/nfc/hci/llc_shdlc.c
index 401c7e2..9ab4a05 100644
--- a/net/nfc/hci/llc_shdlc.c
+++ b/net/nfc/hci/llc_shdlc.c
@@ -382,8 +382,8 @@ static int llc_shdlc_connect_initiate(struct llc_shdlc *shdlc)
 	if (skb == NULL)
 		return -ENOMEM;
 
-	*skb_put(skb, 1) = SHDLC_MAX_WINDOW;
-	*skb_put(skb, 1) = SHDLC_SREJ_SUPPORT ? 1 : 0;
+	*(u8 *)skb_put(skb, 1) = SHDLC_MAX_WINDOW;
+	*(u8 *)skb_put(skb, 1) = SHDLC_SREJ_SUPPORT ? 1 : 0;
 
 	return llc_shdlc_send_u_frame(shdlc, skb, U_FRAME_RSET);
 }
diff --git a/net/nfc/nci/core.c b/net/nfc/nci/core.c
index 17b9f1c..a3dac34 100644
--- a/net/nfc/nci/core.c
+++ b/net/nfc/nci/core.c
@@ -1341,7 +1341,7 @@ int nci_send_cmd(struct nci_dev *ndev, __u16 opcode, __u8 plen, void *payload)
 		return -ENOMEM;
 	}
 
-	hdr = (struct nci_ctrl_hdr *) skb_put(skb, NCI_CTRL_HDR_SIZE);
+	hdr = skb_put(skb, NCI_CTRL_HDR_SIZE);
 	hdr->gid = nci_opcode_gid(opcode);
 	hdr->oid = nci_opcode_oid(opcode);
 	hdr->plen = plen;
diff --git a/net/nfc/nci/hci.c b/net/nfc/nci/hci.c
index d4a53ce..d1119bb 100644
--- a/net/nfc/nci/hci.c
+++ b/net/nfc/nci/hci.c
@@ -472,7 +472,7 @@ void nci_hci_data_received_cb(void *context,
 			return;
 		}
 
-		*skb_put(hcp_skb, NCI_HCI_HCP_PACKET_HEADER_LEN) = pipe;
+		*(u8 *)skb_put(hcp_skb, NCI_HCI_HCP_PACKET_HEADER_LEN) = pipe;
 
 		skb_queue_walk(&ndev->hci_dev->rx_hcp_frags, frag_skb) {
 			msg_len = frag_skb->len - NCI_HCI_HCP_PACKET_HEADER_LEN;
diff --git a/net/nfc/nci/spi.c b/net/nfc/nci/spi.c
index d904cd2..a502a33 100644
--- a/net/nfc/nci/spi.c
+++ b/net/nfc/nci/spi.c
@@ -86,8 +86,8 @@ int nci_spi_send(struct nci_spi *nspi,
 		u16 crc;
 
 		crc = crc_ccitt(CRC_INIT, skb->data, skb->len);
-		*skb_put(skb, 1) = crc >> 8;
-		*skb_put(skb, 1) = crc & 0xFF;
+		*(u8 *)skb_put(skb, 1) = crc >> 8;
+		*(u8 *)skb_put(skb, 1) = crc & 0xFF;
 	}
 
 	if (write_handshake_completion)	{
@@ -172,8 +172,8 @@ static int send_acknowledge(struct nci_spi *nspi, u8 acknowledge)
 	hdr[3] = 0;
 
 	crc = crc_ccitt(CRC_INIT, skb->data, skb->len);
-	*skb_put(skb, 1) = crc >> 8;
-	*skb_put(skb, 1) = crc & 0xFF;
+	*(u8 *)skb_put(skb, 1) = crc >> 8;
+	*(u8 *)skb_put(skb, 1) = crc & 0xFF;
 
 	ret = __nci_spi_send(nspi, skb, 0);
 
diff --git a/net/nfc/nci/uart.c b/net/nfc/nci/uart.c
index cfa7f35..442f8ea 100644
--- a/net/nfc/nci/uart.c
+++ b/net/nfc/nci/uart.c
@@ -355,7 +355,7 @@ static int nci_uart_default_recv_buf(struct nci_uart *nu, const u8 *data,
 
 		/* Eat byte after byte till full packet header is received */
 		if (nu->rx_skb->len < NCI_CTRL_HDR_SIZE) {
-			*skb_put(nu->rx_skb, 1) = *data++;
+			*(u8 *)skb_put(nu->rx_skb, 1) = *data++;
 			--count;
 			continue;
 		}
diff --git a/net/psample/psample.c b/net/psample/psample.c
index 8aa58a9..3a6ad0f 100644
--- a/net/psample/psample.c
+++ b/net/psample/psample.c
@@ -264,7 +264,7 @@ void psample_sample_packet(struct psample_group *group, struct sk_buff *skb,
 		int nla_len = nla_total_size(data_len);
 		struct nlattr *nla;
 
-		nla = (struct nlattr *)skb_put(nl_skb, nla_len);
+		nla = skb_put(nl_skb, nla_len);
 		nla->nla_type = PSAMPLE_ATTR_DATA;
 		nla->nla_len = nla_attr_size(data_len);
 
diff --git a/net/qrtr/qrtr.c b/net/qrtr/qrtr.c
index cff6791..5586609 100644
--- a/net/qrtr/qrtr.c
+++ b/net/qrtr/qrtr.c
@@ -259,7 +259,7 @@ static struct sk_buff *qrtr_alloc_ctrl_packet(u32 type, size_t pkt_len,
 		return NULL;
 	skb_reset_transport_header(skb);
 
-	hdr = (struct qrtr_hdr *)skb_put(skb, QRTR_HDR_SIZE);
+	hdr = skb_put(skb, QRTR_HDR_SIZE);
 	hdr->version = cpu_to_le32(QRTR_PROTO_VER);
 	hdr->type = cpu_to_le32(type);
 	hdr->src_node_id = cpu_to_le32(src_node);
diff --git a/net/sctp/sm_make_chunk.c b/net/sctp/sm_make_chunk.c
index 034e916..2c196b3 100644
--- a/net/sctp/sm_make_chunk.c
+++ b/net/sctp/sm_make_chunk.c
@@ -1389,7 +1389,7 @@ static struct sctp_chunk *_sctp_make_chunk(const struct sctp_association *asoc,
 		goto nodata;
 
 	/* Make room for the chunk header.  */
-	chunk_hdr = (sctp_chunkhdr_t *)skb_put(skb, sizeof(sctp_chunkhdr_t));
+	chunk_hdr = skb_put(skb, sizeof(sctp_chunkhdr_t));
 	chunk_hdr->type	  = type;
 	chunk_hdr->flags  = flags;
 	chunk_hdr->length = htons(sizeof(sctp_chunkhdr_t));
diff --git a/net/sctp/ulpevent.c b/net/sctp/ulpevent.c
index ec2b3e0..e361f0b 100644
--- a/net/sctp/ulpevent.c
+++ b/net/sctp/ulpevent.c
@@ -167,8 +167,7 @@ struct sctp_ulpevent  *sctp_ulpevent_make_assoc_change(
 			goto fail;
 
 		skb = sctp_event2skb(event);
-		sac = (struct sctp_assoc_change *) skb_put(skb,
-					sizeof(struct sctp_assoc_change));
+		sac = skb_put(skb, sizeof(struct sctp_assoc_change));
 	}
 
 	/* Socket Extensions for SCTP
@@ -270,8 +269,7 @@ struct sctp_ulpevent *sctp_ulpevent_make_peer_addr_change(
 		goto fail;
 
 	skb = sctp_event2skb(event);
-	spc = (struct sctp_paddr_change *)
-		skb_put(skb, sizeof(struct sctp_paddr_change));
+	spc = skb_put(skb, sizeof(struct sctp_paddr_change));
 
 	/* Sockets API Extensions for SCTP
 	 * Section 5.3.1.2 SCTP_PEER_ADDR_CHANGE
@@ -549,8 +547,7 @@ struct sctp_ulpevent *sctp_ulpevent_make_shutdown_event(
 		goto fail;
 
 	skb = sctp_event2skb(event);
-	sse = (struct sctp_shutdown_event *)
-		skb_put(skb, sizeof(struct sctp_shutdown_event));
+	sse = skb_put(skb, sizeof(struct sctp_shutdown_event));
 
 	/* Socket Extensions for SCTP
 	 * 5.3.1.5 SCTP_SHUTDOWN_EVENT
@@ -612,8 +609,7 @@ struct sctp_ulpevent *sctp_ulpevent_make_adaptation_indication(
 		goto fail;
 
 	skb = sctp_event2skb(event);
-	sai = (struct sctp_adaptation_event *)
-		skb_put(skb, sizeof(struct sctp_adaptation_event));
+	sai = skb_put(skb, sizeof(struct sctp_adaptation_event));
 
 	sai->sai_type = SCTP_ADAPTATION_INDICATION;
 	sai->sai_flags = 0;
@@ -751,8 +747,7 @@ struct sctp_ulpevent *sctp_ulpevent_make_pdapi(
 		goto fail;
 
 	skb = sctp_event2skb(event);
-	pd = (struct sctp_pdapi_event *)
-		skb_put(skb, sizeof(struct sctp_pdapi_event));
+	pd = skb_put(skb, sizeof(struct sctp_pdapi_event));
 
 	/* pdapi_type
 	 *   It should be SCTP_PARTIAL_DELIVERY_EVENT
@@ -803,8 +798,7 @@ struct sctp_ulpevent *sctp_ulpevent_make_authkey(
 		goto fail;
 
 	skb = sctp_event2skb(event);
-	ak = (struct sctp_authkey_event *)
-		skb_put(skb, sizeof(struct sctp_authkey_event));
+	ak = skb_put(skb, sizeof(struct sctp_authkey_event));
 
 	ak->auth_type = SCTP_AUTHENTICATION_EVENT;
 	ak->auth_flags = 0;
@@ -842,8 +836,7 @@ struct sctp_ulpevent *sctp_ulpevent_make_sender_dry_event(
 		return NULL;
 
 	skb = sctp_event2skb(event);
-	sdry = (struct sctp_sender_dry_event *)
-		skb_put(skb, sizeof(struct sctp_sender_dry_event));
+	sdry = skb_put(skb, sizeof(struct sctp_sender_dry_event));
 
 	sdry->sender_dry_type = SCTP_SENDER_DRY_EVENT;
 	sdry->sender_dry_flags = 0;
@@ -869,7 +862,7 @@ struct sctp_ulpevent *sctp_ulpevent_make_stream_reset_event(
 		return NULL;
 
 	skb = sctp_event2skb(event);
-	sreset = (struct sctp_stream_reset_event *)skb_put(skb, length);
+	sreset = skb_put(skb, length);
 
 	sreset->strreset_type = SCTP_STREAM_RESET_EVENT;
 	sreset->strreset_flags = flags;
@@ -897,8 +890,7 @@ struct sctp_ulpevent *sctp_ulpevent_make_assoc_reset_event(
 		return NULL;
 
 	skb = sctp_event2skb(event);
-	areset = (struct sctp_assoc_reset_event *)
-		skb_put(skb, sizeof(struct sctp_assoc_reset_event));
+	areset = skb_put(skb, sizeof(struct sctp_assoc_reset_event));
 
 	areset->assocreset_type = SCTP_ASSOC_RESET_EVENT;
 	areset->assocreset_flags = flags;
@@ -925,8 +917,7 @@ struct sctp_ulpevent *sctp_ulpevent_make_stream_change_event(
 		return NULL;
 
 	skb = sctp_event2skb(event);
-	schange = (struct sctp_stream_change_event *)
-		skb_put(skb, sizeof(struct sctp_stream_change_event));
+	schange = skb_put(skb, sizeof(struct sctp_stream_change_event));
 
 	schange->strchange_type = SCTP_STREAM_CHANGE_EVENT;
 	schange->strchange_flags = flags;
diff --git a/net/vmw_vsock/virtio_transport_common.c b/net/vmw_vsock/virtio_transport_common.c
index 24e2054..7d6ee03 100644
--- a/net/vmw_vsock/virtio_transport_common.c
+++ b/net/vmw_vsock/virtio_transport_common.c
@@ -99,7 +99,7 @@ static struct sk_buff *virtio_transport_build_skb(void *opaque)
 	if (!skb)
 		return NULL;
 
-	hdr = (struct af_vsockmon_hdr *)skb_put(skb, sizeof(*hdr));
+	hdr = skb_put(skb, sizeof(*hdr));
 
 	/* pkt->hdr is little-endian so no need to byteswap here */
 	hdr->src_cid = pkt->hdr.src_cid;