[PATCH] checkpatch: add dedicated checker for 'Fixes:' tag

From: Wang YanQing
Date: Mon Apr 27 2020 - 09:16:33 EST


According to submitting-patches.rst, 'Fixes:' tag has a little
stricter condition about the one line summary:
"
Do not split the tag across multiple
lines, tags are exempt from the "wrap at 75 columns" rule in order to simplify
parsing scripts
"

And the current 'Fixes:' checker in "# Check for git id commit length and
improperly formed commit descriptions" doesn't check for invalid commit id
length, so I think it is better to add dedicated checker for 'Fixes:' TAG.

Signed-off-by: Wang YanQing <udknight@xxxxxxxxx>
---
scripts/checkpatch.pl | 9 ++++++++-
1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 23a001a..fbb31bc 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -2820,7 +2820,7 @@ sub process {
($line =~ /\bcommit\s+[0-9a-f]{5,}\b/i ||
($line =~ /(?:\s|^)[0-9a-f]{12,40}(?:[\s"'\(\[]|$)/i &&
$line !~ /[\<\[][0-9a-f]{12,40}[\>\]]/i &&
- $line !~ /\bfixes:\s*[0-9a-f]{12,40}/i))) {
+ $line !~ /^\s*fixes:\s*([0-9a-f]{6,40})\s*(.*)/i))) {
my $init_char = "c";
my $orig_commit = "";
my $short = 1;
@@ -2979,6 +2979,13 @@ sub process {
}
}

+ if ($in_commit_log && $line =~ /^\s*fixes:\s*([0-9a-f]{6,40})\s*(.*)/i) {
+ if (length($1) != 12 || $2 !~ /^\(\"(.*)\"\)$/i) {
+ ERROR("FIXES_TAG",
+ "please use the 'Fixes:' tag with the first 12 characters of the SHA-1 ID, and the one line summary(no across multiple lines)\n" . $herecurr);
+ }
+ }
+
# ignore non-hunk lines and lines being removed
next if (!$hunk_line || $line =~ /^-/);

--
1.8.5.6.2.g3d8a54e.dirty