diff --git a/net/core/netpoll.c b/net/core/netpoll.c
index d4ec38fa64e6df2742c9c79e7551d6f996f9a600..6f9206b36dc2d517909d37e332c2f13d520cd497 100644
--- a/net/core/netpoll.c
+++ b/net/core/netpoll.c
@@ -614,7 +614,7 @@ void netpoll_print_options(struct netpoll *np)
 			 np->name, np->local_port);
 	printk(KERN_INFO "%s: local IP %pI4\n",
 			 np->name, &np->local_ip);
-	printk(KERN_INFO "%s: interface %s\n",
+	printk(KERN_INFO "%s: interface '%s'\n",
 			 np->name, np->dev_name);
 	printk(KERN_INFO "%s: remote port %d\n",
 			 np->name, np->remote_port);
@@ -661,6 +661,9 @@ int netpoll_parse_options(struct netpoll *np, char *opt)
 		if ((delim = strchr(cur, '@')) == NULL)
 			goto parse_failed;
 		*delim = 0;
+		if (*cur == ' ' || *cur == '\t')
+			printk(KERN_INFO "%s: warning: whitespace"
+					"is not allowed\n", np->name);
 		np->remote_port = simple_strtol(cur, NULL, 10);
 		cur = delim;
 	}
@@ -708,7 +711,7 @@ int netpoll_parse_options(struct netpoll *np, char *opt)
 	return 0;
 
  parse_failed:
-	printk(KERN_INFO "%s: couldn't parse config at %s!\n",
+	printk(KERN_INFO "%s: couldn't parse config at '%s'!\n",
 	       np->name, cur);
 	return -1;
 }