Re: [PATCH] checkpatch: Verify SPDX comment style

[Joe Perches <joe@perches.com>]

On Tue, 2019-02-05 at 14:21 -0800, Andrew Morton wrote:
> On Thu, 10 Jan 2019 16:05:11 -0800 Joe Perches <joe@perches.com> wrote:
> 
> > 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.
> 
> Dan's
> http://lkml.kernel.org/r/154899811738.3165233.12325692939590944259.stgit@dwillia2-desk3.amr.corp.intel.com
> is giving me 
> 
> WARNING: Missing or malformed SPDX-License-Identifier tag in line 1
> #500: FILE: mm/shuffle.h:1:
> +// SPDX-License-Identifier: GPL-2.0
> 
> and switching it to /* */ doesn't fix.  This happens with or without
> this patch applied.  What to do?

Umm, fix checkpatch?

---
 scripts/checkpatch.pl | 18 +++++++++---------
 1 file changed, 9 insertions(+), 9 deletions(-)

diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 37f81fe93c01..216480ae29d1 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -3053,21 +3053,21 @@ sub process {
 # check SPDX comment style for .[chsS] files
 				if ($realfile =~ /\.[chsS]$/ &&
 				    $rawline =~ /SPDX-License-Identifier:/ &&
-				    $rawline !~ /^\+\s*\Q$comment\E\s*/) {
+				    $rawline !~ m@^\+\s*\Q$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",
-					      "Missing or malformed SPDX-License-Identifier tag in line $checklicenseline\n" . $herecurr);
+				    $rawline !~ m@^\+\Q$comment\E SPDX-License-Identifier: @) {
+					WARN("SPDX_LICENSE_TAG",
+					     "Missing or malformed SPDX-License-Identifier tag in line $checklicenseline\n" . $herecurr);
 				} elsif ($rawline =~ /(SPDX-License-Identifier: .*)/) {
-					 my $spdx_license = $1;
-					 if (!is_SPDX_License_valid($spdx_license)) {
-						  WARN("SPDX_LICENSE_TAG",
-						       "'$spdx_license' is not supported in LICENSES/...\n" . $herecurr);
-					 }
+					my $spdx_license = $1;
+					if (!is_SPDX_License_valid($spdx_license)) {
+						WARN("SPDX_LICENSE_TAG",
+						     "'$spdx_license' is not supported in LICENSES/...\n" . $herecurr);
+					}
 				}
 			}
 		}