[RFC PATCH linus] tcp: md5: tcp_md5_do_lookup_exact() can be static

[kbuild test robot]

Fixes: 0c5f0311f690 ("Add linux-next specific files for 20170705")
Signed-off-by: Fengguang Wu <fengguang.wu@xxxxxxxxx>
---
 tcp_ipv4.c |    6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c
index 6ec6900..a20e7f0 100644
--- a/net/ipv4/tcp_ipv4.c
+++ b/net/ipv4/tcp_ipv4.c
@@ -943,9 +943,9 @@ struct tcp_md5sig_key *tcp_md5_do_lookup(const struct sock *sk,
 }
 EXPORT_SYMBOL(tcp_md5_do_lookup);
 
-struct tcp_md5sig_key *tcp_md5_do_lookup_exact(const struct sock *sk,
-					       const union tcp_md5_addr *addr,
-					       int family, u8 prefixlen)
+static struct tcp_md5sig_key *tcp_md5_do_lookup_exact(const struct sock *sk,
+						      const union tcp_md5_addr *addr,
+						      int family, u8 prefixlen)
 {
 	const struct tcp_sock *tp = tcp_sk(sk);
 	struct tcp_md5sig_key *key;