linux-kernel - [PATCH] checkpatch: Minimize checkpatch induced patches...

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Date:   Wed, 14 Sep 2016 10:51:15 -0700
From:   Joe Perches <joe@...ches.com>
To:     Andrew Morton <akpm@...ux-foundation.org>,
        Andy Whitcroft <apw@...onical.com>
Cc:     Greg KH <greg@...ah.com>, Jonathan Corbet <corbet@....net>,
        Josh Triplett <josh@...htriplett.org>,
        Christian Borntraeger <borntraeger@...ibm.com>,
        Theodore Ts'o <tytso@....edu>, linux-kernel@...r.kernel.org
Subject: [PATCH] checkpatch: Minimize checkpatch induced patches...

checkpatch can be a useful tool for patches.

It can be a much more controversial tool when used on files with the
-f option for style and whitespace changes for code that is relatively
stable, obsolete, or for maintained by specific individuals.

o By default, allow checkpatch to be used with the -f|--file option
  for files in drivers/staging/
o Add an undocumented --force command line option to be used together
  with the -f|--file option to scan any file

Signed-off-by: Joe Perches <joe@...ches.com>
cc: Greg KH <greg@...ah.com>
cc: Jonathan Corbet <corbet@....net>
cc: Josh Triplett <josh@...htriplett.org>
cc: Christian Borntraeger <borntraeger@...ibm.com>
cc: Theodore Ts'o <tytso@....edu>
---
 scripts/checkpatch.pl | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 0ef3d83..d998a61 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -27,6 +27,7 @@ my $emacs = 0;
 my $terse = 0;
 my $showfile = 0;
 my $file = 0;
+my $force = 0;
 my $git = 0;
 my %git_commits = ();
 my $check = 0;
@@ -188,6 +189,7 @@ GetOptions(
 	'terse!'	=> \$terse,
 	'showfile!'	=> \$showfile,
 	'f|file!'	=> \$file,
+	'force!'	=> \$force,
 	'g|git!'	=> \$git,
 	'subjective!'	=> \$check,
 	'strict!'	=> \$check,
@@ -893,6 +895,10 @@ if ($git) {
 my $vname;
 for my $filename (@ARGV) {
 	my $FILE;
+	if (!$force && $file && $filename !~ m@...ivers/staging/@) {
+		warn "$P: checking '$filename' is not supported\n";
+		next;
+	}
 	if ($git) {
 		open($FILE, '-|', "git format-patch -M --stdout -1 $filename") ||
 			die "$P: $filename: git format-patch failed - $!\n";
-- 
2.10.0.rc2.1.g053435c