diff options
| author | Patrick Pannuto <ppannuto@codeaurora.org> | 2010-07-23 13:34:18 -0700 |
|---|---|---|
| committer | David Keitel <dkeitel@codeaurora.org> | 2016-03-23 20:51:39 -0700 |
| commit | 769b0796d59658ecac2be4313eda52874acedd67 (patch) | |
| tree | e8eeb882d7c874137f3bdd44991b3e945e01be13 /scripts | |
| parent | b6d250b4e795c16dacde427b8f00ac8c2091dedd (diff) | |
checkpatch: Check for illegal return codes
The only legal integer return is 0, anything else
following "return" should be -ERRCODE or a function.
http://lkml.org/lkml/2010/7/23/318
There's lots of "return -1;" statements in this patch - it's obscene
that this is used to indicate "some error occurred" in kernel space
rather than a real errno value - even when an existing function
(eg, request_irq) gave you an error code already.
Please note this for the future - and please review patches on this
point internally first.
Change-Id: I16268b2ee034f0b3b899115e45c28acfa734ddec
Signed-off-by: Patrick Pannuto <ppannuto@codeaurora.org>
(cherry picked from commit 39531a47164294315b5a7256b520fe22d6e87013)
Signed-off-by: Stepan Moskovchenko <stepanm@codeaurora.org>
Diffstat (limited to 'scripts')
| -rwxr-xr-x | scripts/checkpatch.pl | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl index 8866ce3abdc8..0939b70a4230 100755 --- a/scripts/checkpatch.pl +++ b/scripts/checkpatch.pl @@ -5587,6 +5587,12 @@ sub process { "switch default: should use break\n" . $herectx); } +# check for return codes on error paths + if ($line =~ /\breturn\s+-\d+/) { + ERROR("NO_ERROR_CODE", + "illegal return value, please use an error code"); + } + # check for gcc specific __FUNCTION__ if ($line =~ /\b__FUNCTION__\b/) { if (WARN("USE_FUNC", |