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checkpatch: warn for non-standard fixes tag style 

Add a warning for fixes tags that does not follow community conventions.

Link: https://lkml.kernel.org/r/20220914100255.1048460-1-niklas.soderlund@corigine.com
Signed-off-by: Niklas Söderlund <niklas.soderlund@corigine.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Reviewed-by: Louis Peens <louis.peens@corigine.com>
Reviewed-by: Philippe Schenker <philippe.schenker@toradex.com>
Acked-by: Dwaipayan Ray <dwaipayanray1@gmail.com>
Reviewed-by: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Acked-by: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Acked-by: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Niklas Söderlund 2022-09-14 12:02:55 +02:00 committed by Andrew Morton
parent 462cd7724e
commit bd17e036b4
2 changed files with 51 additions and 0 deletions
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7
Documentation/dev-tools/checkpatch.rst
View File

@ -612,6 +612,13 @@ Commit message
See: https://www.kernel.org/doc/html/latest/process/submitting-patches.html#describe-your-changes
**BAD_FIXES_TAG**
The Fixes: tag is malformed or does not follow the community conventions.
This can occur if the tag have been split into multiple lines (e.g., when
pasted in an email program with word wrapping enabled).
See: https://www.kernel.org/doc/html/latest/process/submitting-patches.html#describe-your-changes
Comparison style
----------------

44
scripts/checkpatch.pl
View File

@ -3146,6 +3146,50 @@ sub process {
}
}
# Check Fixes: styles is correct
if (!$in_header_lines &&
$line =~ /^\s*fixes:?\s*(?:commit\s*)?[0-9a-f]{5,}\b/i) {
my $orig_commit = "";
my $id = "0123456789ab";
my $title = "commit title";
my $tag_case = 1;
my $tag_space = 1;
my $id_length = 1;
my $id_case = 1;
my $title_has_quotes = 0;
if ($line =~ /(\s*fixes:?)\s+([0-9a-f]{5,})\s+($balanced_parens)/i) {
my $tag = $1;
$orig_commit = $2;
$title = $3;
$tag_case = 0 if $tag eq "Fixes:";
$tag_space = 0 if ($line =~ /^fixes:? [0-9a-f]{5,} ($balanced_parens)/i);
$id_length = 0 if ($orig_commit =~ /^[0-9a-f]{12}$/i);
$id_case = 0 if ($orig_commit !~ /[A-F]/);
# Always strip leading/trailing parens then double quotes if existing
$title = substr($title, 1, -1);
if ($title =~ /^".*"$/) {
$title = substr($title, 1, -1);
$title_has_quotes = 1;
}
}
my ($cid, $ctitle) = git_commit_info($orig_commit, $id,
$title);
if ($ctitle ne $title || $tag_case || $tag_space ||
$id_length || $id_case || !$title_has_quotes) {
if (WARN("BAD_FIXES_TAG",
"Please use correct Fixes: style 'Fixes: <12 chars of sha1> (\"<title line>\")' - ie: 'Fixes: $cid (\"$ctitle\")'\n" . $herecurr) &&
$fix) {
$fixed[$fixlinenr] = "Fixes: $cid (\"$ctitle\")";
}
}
}
# Check email subject for common tools that don't need to be mentioned
if ($in_header_lines &&
$line =~ /^Subject:.*\b(?:checkpatch|sparse|smatch)\b[^:]/i) {