[patch 135/166] checkpatch: check proper licensing of Devicetree bindings

Andrew Morton
2020-04-07T03:11:16Z

From: Lubomir Rintel <lkundrak@v3.sk>
Subject: checkpatch: check proper licensing of Devicetree bindings

According to Devicetree maintainers (see Link: below), the Devicetree
binding documents are preferrably licensed (GPL-2.0-only OR BSD-2-Clause).

Let's check that. The actual check is a bit more relaxed, to allow more
liberal but compatible licensing (e.g. GPL-2.0-or-later OR BSD-2-Clause).

Link: https://lore.kernel.org/lkml/20200108142132.GA4830@bogus/
Link: http://lkml.kernel.org/r/20200309215153.38824-1-lkundrak@v3.sk
Signed-off-by: Lubomir Rintel <lkundrak@v3.sk>
Acked-by: Joe Perches <joe@perches.com>
Cc: Rob Herring <robh@kernel.org>
Cc: Neil Armstrong <narmstrong@baylibre.com>
Cc: Laurent Pinchart <Laurent.pinchart@ideasonboard.com>,
Cc: Jonas Karlman <jonas@kwiboo.se>,
Cc: Jernej Skrabec <jernej.skrabec@siol.net>,
Cc: Mark Rutland <mark.rutland@arm.com>,
Cc: David Airlie <airlied@linux.ie>
Cc: Daniel Vetter <daniel@ffwll.ch>,
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

scripts/checkpatch.pl | 11 +++++++++++
1 file changed, 11 insertions(+)

--- a/scripts/checkpatch.pl~checkpatch-check-proper-licensing-of-devicetree-bindings
+++ a/scripts/checkpatch.pl
@@ -3157,6 +3157,17 @@ sub process {
WARN("SPDX_LICENSE_TAG",
"'$spdx_license' is not supported in LICENSES/...\n" . $herecurr);
}
+ if ($realfile =~ m@^Documentation/devicetree/bindings/@ &&
+ not $spdx_license =~ /GPL-2\.0.*BSD-2-Clause/) {
+ my $msg_level = \&WARN;
+ $msg_level = \&CHK if ($file);
+ if (&{$msg_level}("SPDX_LICENSE_TAG",
+
+ "DT binding documents should be licensed (GPL-2.0-only OR BSD-2-Clause)\n" . $herecurr) &&
+ $fix) {
+ $fixed[$fixlinenr] =~ s/SPDX-License-Identifier: .*/SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)/;
+ }
+ }
}
}
}
_