checkpatch: remove false warning for commit reference
Checkpatch warns of an incorrect commit reference style for any
hexadecimal number of 12 digits and more.
Numbers of 12 digits are not necessarily commit ids.
For an example provoking the problem see
https://patchwork.kernel.org/patch/9170897/
Checkpatch should only warn if the number refers to an existing commit.
Link: http://lkml.kernel.org/r/20170607184008.5869-1-xypron.glpk@gmx.de
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Acked-by: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 2f61f54..e9618ca 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -867,6 +867,7 @@
# echo "commit $(cut -c 1-12,41-)"
# done
} elsif ($lines[0] =~ /^fatal: ambiguous argument '$commit': unknown revision or path not in the working tree\./) {
+ $id = undef;
} else {
$id = substr($lines[0], 0, 12);
$desc = substr($lines[0], 41);
@@ -2606,7 +2607,8 @@
($id, $description) = git_commit_info($orig_commit,
$id, $orig_desc);
- if ($short || $long || $space || $case || ($orig_desc ne $description) || !$hasparens) {
+ if (defined($id) &&
+ ($short || $long || $space || $case || ($orig_desc ne $description) || !$hasparens)) {
ERROR("GIT_COMMIT_ID",
"Please use git commit description style 'commit <12+ chars of sha1> (\"<title line>\")' - ie: '${init_char}ommit $id (\"$description\")'\n" . $herecurr);
}
