From 08eb9b8016b18f53fa8900f3d1c9359f9edeb724 Mon Sep 17 00:00:00 2001 From: Joe Perches Date: Tue, 11 Oct 2016 13:51:50 -0700 Subject: [PATCH] checkpatch: test multiple line block comment alignment Warn when block comments are not aligned on the * /* * block comment, no warning */ /* * block comment, emit warning */ Link: http://lkml.kernel.org/r/edb57bd330adfe024b95ec2a807d4aa7f0c8b112.1472261299.git.joe@perches.com Signed-off-by: Joe Perches Reported-by: Sudip Mukherjee Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- scripts/checkpatch.pl | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl index 1c82b01d581a..894f8c616573 100755 --- a/scripts/checkpatch.pl +++ b/scripts/checkpatch.pl @@ -2979,6 +2979,25 @@ sub process { "Block comments use a trailing */ on a separate line\n" . $herecurr); } +# Block comment * alignment + if ($prevline =~ /$;[ \t]*$/ && #ends in comment + (($prevrawline =~ /^\+.*?\/\*/ && #starting /* + $prevrawline !~ /\*\/[ \t]*$/) || #no trailing */ + $prevrawline =~ /^\+[ \t]*\*/) && #starting * + $rawline =~ /^\+[ \t]*\*/) { #rawline * + $prevrawline =~ m@^\+([ \t]*/?)\*@; + my $oldindent = expand_tabs($1); + $rawline =~ m@^\+([ \t]*)\*@; + my $newindent = $1; + my $test_comment = '^\\+' . "$;" x (length($newindent) + 1); + $newindent = expand_tabs($newindent); + if ($line =~ /$test_comment/ && + length($oldindent) ne length($newindent)) { + WARN("BLOCK_COMMENT_STYLE", + "Block comments should align the * on each line\n" . $hereprev); + } + } + # check for missing blank lines after struct/union declarations # with exceptions for various attributes and macros if ($prevline =~ /^[\+ ]};?\s*$/ && -- 2.20.1