diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c
index 0268e11..00c0839 100644
--- a/net/ipv6/tcp_ipv6.c
+++ b/net/ipv6/tcp_ipv6.c
@@ -733,7 +733,7 @@
 				   struct in6_addr *saddr,
 				   struct in6_addr *daddr,
 				   struct tcphdr *th, int protocol,
-				   int tcplen)
+				   unsigned int tcplen)
 {
 	struct scatterlist sg[4];
 	__u16 data_len;
@@ -818,7 +818,7 @@
 				struct dst_entry *dst,
 				struct request_sock *req,
 				struct tcphdr *th, int protocol,
-				int tcplen)
+				unsigned int tcplen)
 {
 	struct in6_addr *saddr, *daddr;
 
@@ -985,7 +985,7 @@
 	struct tcphdr *th = tcp_hdr(skb), *t1;
 	struct sk_buff *buff;
 	struct flowi fl;
-	int tot_len = sizeof(*th);
+	unsigned int tot_len = sizeof(*th);
 #ifdef CONFIG_TCP_MD5SIG
 	struct tcp_md5sig_key *key;
 #endif
@@ -1085,7 +1085,7 @@
 	struct tcphdr *th = tcp_hdr(skb), *t1;
 	struct sk_buff *buff;
 	struct flowi fl;
-	int tot_len = sizeof(struct tcphdr);
+	unsigned int tot_len = sizeof(struct tcphdr);
 	__be32 *topt;
 #ifdef CONFIG_TCP_MD5SIG
 	struct tcp_md5sig_key *key;