net: tipc: Add __printf() markup to fix -Wsuggest-attribute=format

net/tipc/netlink_compat.c: In function ‘tipc_tlv_sprintf’:
net/tipc/netlink_compat.c:137:2: warning: function ‘tipc_tlv_sprintf’ might be a candidate for ‘gnu_printf’ format attribute [-Wsuggest-attribute=format]
  137 |  n = vscnprintf(buf, rem, fmt, args);

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

diff --git a/net/tipc/netlink_compat.c b/net/tipc/netlink_compat.c
index 591a3018c8a27388e3c9feaef536e001cdb30e6e..5c6206c9d6a8a7c7047af5c7473a2acf5bc53a9c 100644 (file)
--- a/net/tipc/netlink_compat.c
+++ b/net/tipc/netlink_compat.c
@@ -118,7 +118,8 @@ static void tipc_tlv_init(struct sk_buff *skb, u16 type)
        skb_put(skb, sizeof(struct tlv_desc));
 }
 
-static int tipc_tlv_sprintf(struct sk_buff *skb, const char *fmt, ...)
+static __printf(2, 3) int tipc_tlv_sprintf(struct sk_buff *skb,
+                                          const char *fmt, ...)
 {
        int n;
        u16 len;