diff --git a/net/ipv4/xfrm4_tunnel.c b/net/ipv4/xfrm4_tunnel.c
index 9247d9d..5b48f49 100644
--- a/net/ipv4/xfrm4_tunnel.c
+++ b/net/ipv4/xfrm4_tunnel.c
@@ -75,18 +75,18 @@
 static int __init ipip_init(void)
 {
 	if (xfrm_register_type(&ipip_type, AF_INET) < 0) {
-		printk(KERN_INFO "ipip init: can't add xfrm type\n");
+		pr_info("%s: can't add xfrm type\n", __func__);
 		return -EAGAIN;
 	}
 
 	if (xfrm4_tunnel_register(&xfrm_tunnel_handler, AF_INET)) {
-		printk(KERN_INFO "ipip init: can't add xfrm handler for AF_INET\n");
+		pr_info("%s: can't add xfrm handler for AF_INET\n", __func__);
 		xfrm_unregister_type(&ipip_type, AF_INET);
 		return -EAGAIN;
 	}
 #if IS_ENABLED(CONFIG_IPV6)
 	if (xfrm4_tunnel_register(&xfrm64_tunnel_handler, AF_INET6)) {
-		printk(KERN_INFO "ipip init: can't add xfrm handler for AF_INET6\n");
+		pr_info("%s: can't add xfrm handler for AF_INET6\n", __func__);
 		xfrm4_tunnel_deregister(&xfrm_tunnel_handler, AF_INET);
 		xfrm_unregister_type(&ipip_type, AF_INET);
 		return -EAGAIN;
@@ -99,12 +99,14 @@
 {
 #if IS_ENABLED(CONFIG_IPV6)
 	if (xfrm4_tunnel_deregister(&xfrm64_tunnel_handler, AF_INET6))
-		printk(KERN_INFO "ipip close: can't remove xfrm handler for AF_INET6\n");
+		pr_info("%s: can't remove xfrm handler for AF_INET6\n",
+			__func__);
 #endif
 	if (xfrm4_tunnel_deregister(&xfrm_tunnel_handler, AF_INET))
-		printk(KERN_INFO "ipip close: can't remove xfrm handler for AF_INET\n");
+		pr_info("%s: can't remove xfrm handler for AF_INET\n",
+			__func__);
 	if (xfrm_unregister_type(&ipip_type, AF_INET) < 0)
-		printk(KERN_INFO "ipip close: can't remove xfrm type\n");
+		pr_info("%s: can't remove xfrm type\n", __func__);
 }
 
 module_init(ipip_init);