l2tp: avoid multiple assignments

checkpatch warns about multiple assignments.

Update l2tp accordingly.
Signed-off-by: Tom Parkin <tparkin@katalix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/l2tp/l2tp_core.c

@@ -621,8 +621,8 @@ void l2tp_recv_common(struct l2tp_session *session, struct sk_buff *skb,
 		      int length)
 {
 	struct l2tp_tunnel *tunnel = session->tunnel;
+	u32 ns = 0, nr = 0;
 	int offset;
-	u32 ns, nr;
 
 	/* Parse and check optional cookie */
 	if (session->peer_cookie_len > 0) {
@@ -644,7 +644,6 @@ void l2tp_recv_common(struct l2tp_session *session, struct sk_buff *skb,
 	 * the control of the LNS.  If no sequence numbers present but
 	 * we were expecting them, discard frame.
 	 */
-	ns = nr = 0;
 	L2TP_SKB_CB(skb)->has_seq = 0;
 	if (tunnel->version == L2TP_HDR_VER_2) {
 		if (hdrflags & L2TP_HDRFLAG_S) {
@@ -826,7 +825,8 @@ static int l2tp_udp_recv_core(struct l2tp_tunnel *tunnel, struct sk_buff *skb)
 	}
 
 	/* Point to L2TP header */
-	optr = ptr = skb->data;
+	optr = skb->data;
+	ptr = skb->data;
 
 	/* Get L2TP header flags */
 	hdrflags = ntohs(*(__be16 *)ptr);

net/l2tp/l2tp_ip.c

@@ -124,7 +124,8 @@ static int l2tp_ip_recv(struct sk_buff *skb)
 		goto discard;
 
 	/* Point to L2TP header */
-	optr = ptr = skb->data;
+	optr = skb->data;
+	ptr = skb->data;
 	session_id = ntohl(*((__be32 *)ptr));
 	ptr += 4;
 
@@ -153,7 +154,8 @@ static int l2tp_ip_recv(struct sk_buff *skb)
 			goto discard_sess;
 
 		/* Point to L2TP header */
-		optr = ptr = skb->data;
+		optr = skb->data;
+		ptr = skb->data;
 		ptr += 4;
 		pr_debug("%s: ip recv\n", tunnel->name);
 		print_hex_dump_bytes("", DUMP_PREFIX_OFFSET, ptr, length);
@@ -284,8 +286,10 @@ static int l2tp_ip_bind(struct sock *sk, struct sockaddr *uaddr, int addr_len)
 	    chk_addr_ret != RTN_MULTICAST && chk_addr_ret != RTN_BROADCAST)
 		goto out;
 
-	if (addr->l2tp_addr.s_addr)
-		inet->inet_rcv_saddr = inet->inet_saddr = addr->l2tp_addr.s_addr;
+	if (addr->l2tp_addr.s_addr) {
+		inet->inet_rcv_saddr = addr->l2tp_addr.s_addr;
+		inet->inet_saddr = addr->l2tp_addr.s_addr;
+	}
 	if (chk_addr_ret == RTN_MULTICAST || chk_addr_ret == RTN_BROADCAST)
 		inet->inet_saddr = 0;  /* Use device */
 

net/l2tp/l2tp_ip6.c

@@ -137,7 +137,8 @@ static int l2tp_ip6_recv(struct sk_buff *skb)
 		goto discard;
 
 	/* Point to L2TP header */
-	optr = ptr = skb->data;
+	optr = skb->data;
+	ptr = skb->data;
 	session_id = ntohl(*((__be32 *)ptr));
 	ptr += 4;
 
@@ -166,7 +167,8 @@ static int l2tp_ip6_recv(struct sk_buff *skb)
 			goto discard_sess;
 
 		/* Point to L2TP header */
-		optr = ptr = skb->data;
+		optr = skb->data;
+		ptr = skb->data;
 		ptr += 4;
 		pr_debug("%s: ip recv\n", tunnel->name);
 		print_hex_dump_bytes("", DUMP_PREFIX_OFFSET, ptr, length);