--- linux-2.6.22.14/drivers/net/wan/n2.c	2008-01-22 14:02:50.000000000 +0200
+++ linux/drivers/net/wan/n2.c	2008-01-15 11:03:50.000000000 +0200
@@ -473,7 +473,7 @@ static int __init n2_run(unsigned long i
 		port->settings.clock_type = CLOCK_EXT;
 		port->card = card;
 
-		if (register_hdlc_device(dev)) {
+		if (register_hdlc_device(dev, "hdlc%d")) {
 			printk(KERN_WARNING "n2: unable to register hdlc "
 			       "device\n");
 			port->card = NULL;