From fdf13693d370653013eec3bc7f80a3f535001bf0 Mon Sep 17 00:00:00 2001
From: Joe Perches <joe@perches.com>
Date: Thu, 7 Mar 2019 16:28:32 -0800
Subject: checkpatch: verify SPDX comment style

Using SPDX commenting style // or /* is specified for various file types
in Documentation/process/license-rules.rst so add an appropriate test for
.[chsS] files because many proposed file additions and patches do not use
the correct style.

Link: http://lkml.kernel.org/r/8b02899853247a2c67669561761f354dd3bd110e.camel@perches.com
Signed-off-by: Joe Perches <joe@perches.com>
Cc: Rob Herring <robh@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
 scripts/checkpatch.pl | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index b737ca9d7204..c17cbc06911f 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -3037,6 +3037,14 @@ sub process {
 					$comment = '..';
 				}
 
+# check SPDX comment style for .[chsS] files
+				if ($realfile =~ /\.[chsS]$/ &&
+				    $rawline =~ /SPDX-License-Identifier:/ &&
+				    $rawline !~ /^\+\s*\Q$comment\E\s*/) {
+					WARN("SPDX_LICENSE_TAG",
+					     "Improper SPDX comment style for '$realfile', please use '$comment' instead\n" . $herecurr);
+				}
+
 				if ($comment !~ /^$/ &&
 				    $rawline !~ /^\+\Q$comment\E SPDX-License-Identifier: /) {
 					 WARN("SPDX_LICENSE_TAG",
-- 
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