checkpatch: exclude drivers/staging from if with unnecessary parentheses test

From: Joe Perches <joe@perches.com>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: LKML <linux-kernel@vger.kernel.org>,
	Greg KH <gregkh@linuxfoundation.org>
Subject: checkpatch: exclude drivers/staging from if with unnecessary parentheses test
Date: Thu, 11 Jan 2018 12:53:54 -0800	[thread overview]
Message-ID: <1515704034.9619.165.camel@perches.com> (raw)

Greg KH doesn't like this test so exclude the staging directory
from the implied --strict only test unless --strict is actually
used on the command-line.

Signed-off-by: Joe Perches <joe@perches.com>
---
 scripts/checkpatch.pl | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index d2464058ab5d..3a7499de2c2d 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -4526,7 +4526,9 @@ sub process {
 		}
 
 # check for unnecessary parentheses around comparisons in if uses
-		if ($^V && $^V ge 5.10.0 && defined($stat) &&
+# when !drivers/staging or command-line uses --strict
+		if (($realfile !~ m@^(?:drivers/staging/)@ || $check_orig) &&
+		    $^V && $^V ge 5.10.0 && defined($stat) &&
 		    $stat =~ /(^.\s*if\s*($balanced_parens))/) {
 			my $if_stat = $1;
 			my $test = substr($2, 1, -1);
