--- zzzz-none-000/linux-3.10.107/net/x25/x25_link.c	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/net/x25/x25_link.c	2021-02-04 17:41:59.000000000 +0000
@@ -21,6 +21,8 @@
  *	2000-09-04	Henner Eisen	  dev_hold() / dev_put() for x25_neigh.
  */
 
+#define pr_fmt(fmt) "X25: " fmt
+
 #include <linux/kernel.h>
 #include <linux/jiffies.h>
 #include <linux/timer.h>
@@ -93,13 +95,13 @@
 		if (!pskb_may_pull(skb, X25_STD_MIN_LEN + 4))
 			break;
 
-		printk(KERN_WARNING "x25: diagnostic #%d - %02X %02X %02X\n",
+		pr_warn("diagnostic #%d - %02X %02X %02X\n",
 		       skb->data[3], skb->data[4],
 		       skb->data[5], skb->data[6]);
 		break;
 
 	default:
-		printk(KERN_WARNING "x25: received unknown %02X with LCI 000\n",
+		pr_warn("received unknown %02X with LCI 000\n",
 		       frametype);
 		break;
 	}