From: Olivier Matz <olivier.matz@6wind.com>
Date: Tue, 16 Feb 2016 14:36:54 +0000 (+0100)
Subject: scripts: fix checkpatch help
X-Git-Tag: spdx-start~7216
X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=0853f25d25e7cc4309b830e791e776660b17f943;p=dpdk.git

scripts: fix checkpatch help

When started without defining DPDK_CHECKPATCH_PATH, the usage was not
displayed.

Signed-off-by: Olivier Matz <olivier.matz@6wind.com>
---

diff --git a/scripts/checkpatches.sh b/scripts/checkpatches.sh
index afc611bfec..9d8541b095 100755
--- a/scripts/checkpatches.sh
+++ b/scripts/checkpatches.sh
@@ -34,10 +34,6 @@
 # - DPDK_CHECKPATCH_PATH
 # - DPDK_CHECKPATCH_LINE_LENGTH
 . scripts/load-devel-config.sh
-if [ ! -x "$DPDK_CHECKPATCH_PATH" ] ; then
-	echo 'Cannot execute DPDK_CHECKPATCH_PATH' >&2
-	exit 1
-fi
 
 length=${DPDK_CHECKPATCH_LINE_LENGTH:-80}
 
@@ -51,7 +47,12 @@ SPLIT_STRING,LINE_SPACING,PARENTHESIS_ALIGNMENT,NETWORKING_BLOCK_COMMENT_STYLE,\
 NEW_TYPEDEFS,COMPARISON_TO_NULL"
 
 print_usage () {
-	echo "usage: $(basename $0) [-q] [-v] [patch1 [patch2] ...]]"
+	cat <<- END_OF_HELP
+	usage: $(basename $0) [-q] [-v] [patch1 [patch2] ...]]
+
+	Run Linux kernel checkpatch.pl with DPDK options.
+	The environment variable DPDK_CHECKPATCH_PATH must be set.
+	END_OF_HELP
 }
 
 quiet=false
@@ -66,6 +67,13 @@ while getopts hqv ARG ; do
 done
 shift $(($OPTIND - 1))
 
+if [ ! -x "$DPDK_CHECKPATCH_PATH" ] ; then
+	print_usage >&2
+	echo
+	echo 'Cannot execute DPDK_CHECKPATCH_PATH' >&2
+	exit 1
+fi
+
 status=0
 for p in "$@" ; do
 	! $verbose || printf '\n### %s\n\n' "$p"