[patch 051/111] checkpatch: allow c99 style // comments

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From: Joe Perches <joe@xxxxxxxxxxx>
Subject: checkpatch: allow c99 style // comments

Sanitise the lines that contain c99 comments so that the error doesn't get
emitted.

Link: http://lkml.kernel.org/r/d4d22c34ad7bcc1bceb52f0742f76b7a6d585235.1468368420.git.joe@xxxxxxxxxxx
Signed-off-by: Joe Perches <joe@xxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---

 scripts/checkpatch.pl |    6 ++++++
 1 file changed, 6 insertions(+)

diff -puN scripts/checkpatch.pl~checkpatch-allow-c99-style-comments scripts/checkpatch.pl
--- a/scripts/checkpatch.pl~checkpatch-allow-c99-style-comments
+++ a/scripts/checkpatch.pl
@@ -55,6 +55,7 @@ my $spelling_file = "$D/spelling.txt";
 my $codespell = 0;
 my $codespellfile = "/usr/share/codespell/dictionary.txt";
 my $color = 1;
+my $allow_c99_comments = 1;
 
 sub help {
 	my ($exitcode) = @_;
@@ -1144,6 +1145,11 @@ sub sanitise_line {
 		$res =~ s@(\#\s*(?:error|warning)\s+).*@$1$clean@;
 	}
 
+	if ($allow_c99_comments && $res =~ m@(//.*$)@) {
+		my $match = $1;
+		$res =~ s/\Q$match\E/"$;" x length($match)/e;
+	}
+
 	return $res;
 }
 
_
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