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checkpatch: warn on unnecessary void function return statements 

void function lines that use a single tab then "return;" are generally
unnecessary.

Change-Id: Ib310bf8de9f2a58aefa3e54b8c903723394ac23c
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>
Git-commit: 9819cf252a0fad1bf46aac8a051cf30426e073ee
Git-repo: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
Signed-off-by: Stepan Moskovchenko <stepanm@codeaurora.org>
This commit is contained in:
Joe Perches 2014-06-04 16:12:09 -07:00 committed by Stepan Moskovchenko
parent 5078d74982
commit 0dd150bcc3
1 changed files with 7 additions and 0 deletions
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7
scripts/checkpatch.pl
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@ -3470,6 +3470,13 @@ sub process {
}
}
# unnecessary return in a void function? (a single leading tab, then return;)
if ($sline =~ /^\+\treturn\s*;\s*$/ &&
$prevline =~ /^\+/) {
WARN("RETURN_VOID",
"void function return statements are not generally useful\n" . $herecurr);
}
# if statements using unnecessary parentheses - ie: if ((foo == bar))
if ($^V && $^V ge 5.10.0 &&
$line =~ /\bif\s*((?:\(\s*){2,})/) {