ipl2tp: fix clang warning

Clang complains about passing non-format string.

Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: David Ahern <dsahern@kernel.org>

diff --git a/ip/ipl2tp.c b/ip/ipl2tp.c
index 77bc3249c7ec7244c41bc08ec46028ff159387fe..569723581ec240d76f6d9d02f61559701fabed2d 100644 (file)
--- a/ip/ipl2tp.c
+++ b/ip/ipl2tp.c
@@ -191,8 +191,9 @@ static int delete_session(struct l2tp_parm *p)
        return 0;
 }
 
-static void print_cookie(const char *name, const char *fmt,
-                        const uint8_t *cookie, int len)
+static void __attribute__((format(printf, 2, 0)))
+print_cookie(const char *name, const char *fmt,
+            const uint8_t *cookie, int len)
 {
        char abuf[32];
        size_t n;