checkpatch: check SPDX tags in YAML files

This adds a warning when a YAML file is lacking a SPDX header on first
line, or it uses incorrect commenting style.

Currently the only YAML files in the tree are Devicetree binding
documents.

Signed-off-by: Lubomir Rintel <lkundrak@v3.sk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Joe Perches <joe@perches.com>
Cc: Rob Herring <robh@kernel.org>
Link: http://lkml.kernel.org/r/20200129123356.388669-1-lkundrak@v3.sk
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 3f62971c7c989964190dbae1bdd0e63d774c6cad..977d4c0c2dc99d91028350d714c894780fd644d3 100755 (executable)
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -3106,7 +3106,7 @@ sub process {
                                        $comment = '/*';
                                } elsif ($realfile =~ /\.(c|dts|dtsi)$/) {
                                        $comment = '//';
-                               } elsif (($checklicenseline == 2) || $realfile =~ /\.(sh|pl|py|awk|tc)$/) {
+                               } elsif (($checklicenseline == 2) || $realfile =~ /\.(sh|pl|py|awk|tc|yaml)$/) {
                                        $comment = '#';
                                } elsif ($realfile =~ /\.rst$/) {
                                        $comment = '..';