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Subject: [patch 06/18] checkincludes.pl: provide usage helper
From: akpm@linux-foundation.org
Date: Fri, 18 Sep 2009 12:49:26 -0700
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To: sam@ravnborg.org
Cc: linux-kbuild@vger.kernel.org, akpm@linux-foundation.org, lrodriguez@Atheros.comlrodriguez@Atheros.com

From: "Luis R. Rodriguez" <lrodriguez@Atheros.com>

Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Cc: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 scripts/checkincludes.pl |    9 +++++++++
 1 file changed, 9 insertions(+)

diff -puN scripts/checkincludes.pl~checkincludespl-provide-usage-helper scripts/checkincludes.pl
--- a/scripts/checkincludes.pl~checkincludespl-provide-usage-helper
+++ a/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";
 
_