From f9d490ab374236a115440c771ecf0fb2890eb929 Mon Sep 17 00:00:00 2001
From: "Luis R. Rodriguez" <lrodriguez@Atheros.com>
Date: Fri, 18 Sep 2009 12:49:26 -0700
Subject: [PATCH] checkincludes.pl: provide usage helper

Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
---
 scripts/checkincludes.pl | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/scripts/checkincludes.pl b/scripts/checkincludes.pl
index 32ebff659fcc..4bff13985ebd 100755
--- a/scripts/checkincludes.pl
+++ b/scripts/checkincludes.pl
@@ -3,6 +3,15 @@
 # checkincludes: Find files included more than once in (other) files.
 # Copyright abandoned, 2000, Niels Kristian Bech Jensen <nkbj@image.dk>.
 
+sub usage {
+	print "Usage: checkincludes.pl <file list>\n";
+	exit 1;
+}
+
+if ($#ARGV < 0) {
+        usage();
+}
+
 foreach $file (@ARGV) {
 	open(FILE, $file) or die "Cannot open $file: $!.\n";
 
-- 
2.20.1