[Linux-kernel-mentees] [PATCH -mmots] checkpatch: add fix for non-standard signature - co-authored-by

Aditya yashsri421 at gmail.com
Fri Dec 4 17:10:49 UTC 2020

On 3/12/20 4:29 pm, Lukas Bulwahn wrote:
> On Thu, Dec 3, 2020 at 10:59 AM Aditya <yashsri421 at gmail.com> wrote:
>> On 3/12/20 12:26 am, Joe Perches wrote:
>>> On Thu, 2020-12-03 at 00:00 +0530, Aditya Srivastava wrote:
>>>> Currently, checkpatch.pl warns us for BAD_SIGN_OFF on the usage of
>>>> non-standard signatures.
>>>> An evaluation on v4.13..v5.8 showed that out of 539 warnings due to
>>>> non-standard signatures, 43 are due to the use of 'Co-authored-by'
>>>> tag, which may seem correct, but is not standard.
>>>> The standard signature equivalent for 'Co-authored-by' is
>>>> 'Co-developed-by'.
>>> I'm not going to ack this as I don't mind non-standard signatures.
>> What do you suggest?
>> Should I drop this patch and move on?
> Joe does not ack this, but he also does not nack it.
> You either move on (which is perfectly fine), or
> you either wait that Andrew Morton reviews it and accepts it because
> he thinks it useful, or
> you reach out to the git committers that have been using
> Co-authored-by in the past and ask them if this kind of feature would
> have been helpful for them and you get an ack from them that convinces
> Andrew Morton to pick this.

Hi Lukas
I have generated a list of users who used co-authored-by tag, ordered
by the number of times they used it (over v4.13..v5.8) here:

However I am a bit unsure about who among these is still active and
can perhaps give us Acked-by.


> I hope this helps. If nobody thinks it is a useful feature, move on to
> work others acknowledge as useful. We have enough stuff to work on.
> Lukas

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