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checkpatch: add test for assignment at start of line

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Kernel style seems to prefer line wrapping an assignment with the
assignment operator on the previous line like:

	<leading tabs>	identifier =
				expression;
over
	<leading tabs>	identifier
				= expression;

somewhere around a 50:1 ratio

$ git grep -P "[^=]=\s*$" -- "*.[ch]" | wc -l
52008
$ git grep -P "^\s+[\*\/\+\|\%\-]?=[^=>]" | wc -l
1161

So add a --strict test for that condition.

Link: http://lkml.kernel.org/r/1522275726.2210.12.camel@perches.com
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Joe Perches 2018-04-10 16:34:04 -07:00 committed by Linus Torvalds
parent bc22d9a7d3
commit 6a487211ec
1 changed files with 6 additions and 0 deletions
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6
scripts/checkpatch.pl
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@ -3062,6 +3062,12 @@ sub process {
}
}
# check for assignments on the start of a line
if ($sline =~ /^\+\s+($Assignment)[^=]/) {
CHK("ASSIGNMENT_CONTINUATIONS",
"Assignment operator '$1' should be on the previous line\n" . $hereprev);
}
# check for && or || at the start of a line
if ($rawline =~ /^\+\s*(&&|\|\|)/) {
CHK("LOGICAL_CONTINUATIONS",