[LLC]: Fix sparse warnings

Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
diff --git a/net/llc/llc_c_ac.c b/net/llc/llc_c_ac.c
index 05236c2..8f7b46d 100644
--- a/net/llc/llc_c_ac.c
+++ b/net/llc/llc_c_ac.c
@@ -1321,7 +1321,7 @@
 	return 0;
 }
 
-int llc_conn_ac_inc_vs_by_1(struct sock *sk, struct sk_buff *skb)
+static int llc_conn_ac_inc_vs_by_1(struct sock *sk, struct sk_buff *skb)
 {
 	llc_sk(sk)->vS = (llc_sk(sk)->vS + 1) % 128;
 	return 0;