linux-kernel - [PATCH v4] checkpatch: allow optional shorter config descriptions

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Message-Id: <1409865234-19708-1-git-send-email-vbendeb@chromium.org>
Date:	Thu,  4 Sep 2014 14:13:54 -0700
From:	Vadim Bendebury <vbendeb@...omium.org>
To:	linux-kernel@...r.kernel.org
Cc:	akpm@...ux-foundation.org, Vadim Bendebury <vbendeb@...omium.org>,
	Andy Whitcroft <apw@...onical.com>,
	Joe Perches <joe@...ches.com>
Subject: [PATCH v4] checkpatch: allow optional shorter config descriptions

This script is used by many other projects, and in some of them the
requirement of at least 4 line long description for all Kconfig items
is excessive. This patch adds a command line option to control the
required minimum length.

Tested running this script over a patch including a two line config
description. The script generated a warning when invoked as is, and
did not generate it when invoked with --min-conf-desc-length=2.

Signed-off-by: Vadim Bendebury <vbendeb@...omium.org>
---

Changes in v4:
  - added the missing trailing semicolon. Re-tested to verify that it
    still works as expected.

Changes in v3:
 - fixed the indentation problem

Changes in v2:
 - modified the condition check as requested

 scripts/checkpatch.pl | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index b385bcb..17003d6 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -43,6 +43,7 @@ my $configuration_file = ".checkpatch.conf";
 my $max_line_length = 80;
 my $ignore_perl_version = 0;
 my $minimum_perl_version = 5.10.0;
+my $min_conf_desc_length = 4;
 
 sub help {
 	my ($exitcode) = @_;
@@ -63,6 +64,7 @@ Options:
   --types TYPE(,TYPE2...)    show only these comma separated message types
   --ignore TYPE(,TYPE2...)   ignore various comma separated message types
   --max-line-length=n        set the maximum line length, if exceeded, warn
+  --min-conf-desc-length=n   set the min description length, if shorter, warn
   --show-types               show the message "types" in the output
   --root=PATH                PATH to the kernel tree root
   --no-summary               suppress the per-file summary
@@ -131,6 +133,7 @@ GetOptions(
 	'types=s'	=> \@use,
 	'show-types!'	=> \$show_types,
 	'max-line-length=i' => \$max_line_length,
+	'min-conf-desc-length=i' => \$min_conf_desc_length,
 	'root=s'	=> \$root,
 	'summary!'	=> \$summary,
 	'mailback!'	=> \$mailback,
@@ -2280,8 +2283,10 @@ sub process {
 				}
 				$length++;
 			}
-			WARN("CONFIG_DESCRIPTION",
-			     "please write a paragraph that describes the config symbol fully\n" . $herecurr) if ($is_start && $is_end && $length < 4);
+			if ($is_start && $is_end && $length < $min_conf_desc_length) {
+				WARN("CONFIG_DESCRIPTION",
+				     "please write a paragraph that describes the config symbol fully\n" . $herecurr);
+			}
 			#print "is_start<$is_start> is_end<$is_end> length<$length>\n";
 		}
 
-- 
2.1.0.rc2.206.gedb03e5

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