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checkpatch: require commit text 

Commit text is almost always necessary to explain why a change is
needed. Exceptions are rare enough that these can be granted through
manual checkpatch overrides.

Change-Id: I926b2276f717940c2fec77a6709fa3088b1bf0c3
Signed-off-by: Steve Muckle <smuckle@codeaurora.org>
Signed-off-by: Stepan Moskovchenko <stepanm@codeaurora.org>
This commit is contained in:
Steve Muckle 2012-03-05 10:12:04 -08:00 committed by Stepan Moskovchenko
parent 536b43b57b
commit 7e43a89699
1 changed files with 53 additions and 5 deletions
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58
scripts/checkpatch.pl
View File

@ -9,9 +9,10 @@ use strict;
use POSIX;
use constant BEFORE_SHORTTEXT => 0;
use constant IN_SHORTTEXT => 1;
use constant AFTER_SHORTTEXT => 2;
use constant CHECK_NEXT_SHORTTEXT => 3;
use constant IN_SHORTTEXT_BLANKLINE => 1;
use constant IN_SHORTTEXT => 2;
use constant AFTER_SHORTTEXT => 3;
use constant CHECK_NEXT_SHORTTEXT => 4;
use constant SHORTTEXT_LIMIT => 75;
my $P = $0;
@ -1914,6 +1915,7 @@ sub process {
my $camelcase_file_seeded = 0;
my $shorttext = BEFORE_SHORTTEXT;
my $shorttext_exspc = 0;
my $commit_text_present = 0;
sanitise_line_reset();
cleanup_continuation_headers();
@ -2099,8 +2101,26 @@ sub process {
my $hereprev = "$here\n$prevrawline\n$rawline\n";
if ($shorttext != AFTER_SHORTTEXT) {
if ($shorttext == IN_SHORTTEXT_BLANKLINE && $line=~/\S/) {
# the subject line was just processed,
# a blank line must be next
WARN("NONBLANK_AFTER_SUMMARY",
"non-blank line after summary line\n" . $herecurr);
$shorttext = IN_SHORTTEXT;
# this non-blank line may or may not be commit text -
# a warning has been generated so assume it is commit
# text and move on
$commit_text_present = 1;
# fall through and treat this line as IN_SHORTTEXT
}
if ($shorttext == IN_SHORTTEXT) {
if ($line=~/^---/ || $line=~/^diff.*/) {
if ($commit_text_present == 0) {
WARN("NO_COMMIT_TEXT",
"please add commit text explaining " .
"*why* the change is needed\n" .
$herecurr);
}
$shorttext = AFTER_SHORTTEXT;
} elsif (length($line) > (SHORTTEXT_LIMIT +
$shorttext_exspc)
@ -2111,7 +2131,23 @@ sub process {
"commit text line over " .
SHORTTEXT_LIMIT .
" characters\n" . $herecurr);
} elsif ($line=~/^\s*[\x21-\x39\x3b-\x7e]+:/) {
# this is a tag, there must be commit
# text by now
if ($commit_text_present == 0) {
WARN("NO_COMMIT_TEXT",
"please add commit text explaining " .
"*why* the change is needed\n" .
$herecurr);
# prevent duplicate warnings
$commit_text_present = 1;
}
} elsif ($line=~/\S/) {
$commit_text_present = 1;
}
} elsif ($shorttext == IN_SHORTTEXT_BLANKLINE) {
# case of non-blank line in this state handled above
$shorttext = IN_SHORTTEXT;
} elsif ($shorttext == CHECK_NEXT_SHORTTEXT) {
# The Subject line doesn't have to be the last header in the patch.
# Avoid moving to the IN_SHORTTEXT state until clear of all headers.
@ -2119,7 +2155,7 @@ sub process {
# text which looks like a header is definitely a header.
if ($line!~/^[\x21-\x39\x3b-\x7e]+:/) {
$shorttext = IN_SHORTTEXT;
# Check for Subject line followed by a blank line.
# Check for Subject line followed by a blank line.
if (length($line) != 0) {
WARN("NONBLANK_AFTER_SUMMARY",
"non-blank line after " .
@ -2127,9 +2163,18 @@ sub process {
$sublinenr . $here .
"\n" . $subjectline .
"\n" . $line . "\n");
# this non-blank line may or may not
# be commit text - a warning has been
# generated so assume it is commit
# text and move on
$commit_text_present = 1;
}
}
# The next two cases are BEFORE_SHORTTEXT.
} elsif ($line=~/^Subject: \[[^\]]*\] (.*)/) {
# This is the subject line. Go to
# CHECK_NEXT_SHORTTEXT to wait for the commit
# text to show up.
$shorttext = CHECK_NEXT_SHORTTEXT;
$subjectline = $line;
$sublinenr = "#$linenr & ";
@ -2141,7 +2186,10 @@ sub process {
" characters\n" . $herecurr);
}
} elsif ($line=~/^ (.*)/) {
$shorttext = IN_SHORTTEXT;
# Indented format, this must be the summary
# line (i.e. git show). There will be no more
# headers so we are now in the shorttext.
$shorttext = IN_SHORTTEXT_BLANKLINE;
$shorttext_exspc = 4;
if (length($1) > SHORTTEXT_LIMIT) {
WARN("LONG_SUMMARY_LINE",