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

Web:        https://git.kernel.org/torvalds/c/a032aa4c4a54c25f204358248db08a0966d3513c
Commit:     a032aa4c4a54c25f204358248db08a0966d3513c
Parent:     a134f8de9f4014dad35884b3cc211028f0a76c7a
Refname:    refs/heads/master
Author:     Joe Perches <[email protected]>
AuthorDate: Tue Feb 6 15:39:03 2018 -0800
Committer:  Linus Torvalds <[email protected]>
CommitDate: Tue Feb 6 18:32:45 2018 -0800

    checkpatch: exclude drivers/staging from if with unnecessary parentheses test
    
    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.
    
    Link: http://lkml.kernel.org/r/[email protected]
    Signed-off-by: Joe Perches <[email protected]>
    Cc: Greg KH <[email protected]>
    Signed-off-by: Andrew Morton <[email protected]>
    Signed-off-by: Linus Torvalds <[email protected]>
---
 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);
--
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