linux-kernel - Re: [PATCH v6] checkpatch: add fix for non-standard signature

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Message-ID: <b9048b9c-22cb-fc47-8e87-1c091a9cc822@gmail.com>
Date:   Sat, 5 Dec 2020 15:52:40 +0530
From:   Aditya <yashsri421@...il.com>
To:     linux-kernel@...r.kernel.org
Cc:     lukas.bulwahn@...il.com, Joe Perches <joe@...ches.com>,
        daniel@...earbox.net, peterz@...radead.org,
        gregkh@...uxfoundation.org
Subject: Re: [PATCH v6] checkpatch: add fix for non-standard signature -
 co-authored-by

On 4/12/20 8:10 pm, 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'.
> 
> Provide a fix by suggesting users with this signature alternative and
> replacing.
> 
> Signed-off-by: Aditya Srivastava <yashsri421@...il.com>
> ---
> applies perfectly on the latest next-20201204 branch
> 
> changes in v2: replace commit specific example with brief evaluation
> 
> changes in v3: provide rationale to users for every signature tag suggestion;
> modify commit message describing arrival to conclusion in a structured way
> 
> changes in v4: modify rationale for certain suggestions
> 
> changes in v5: remove the tag deletion suggestions, ie "Generated-by" and "Celebrated-by"; rebase on last accepted changes; modify commit message
> 
> changes in v6: reduce tag suggestions to only "Co-authored-by"; modify commit message accordingly; include complete version changelog
> 
>  scripts/checkpatch.pl | 3 +++
>  1 file changed, 3 insertions(+)
> 
> diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
> index 4a026926139f..fc036d545d2d 100755
> --- a/scripts/checkpatch.pl
> +++ b/scripts/checkpatch.pl
> @@ -2832,6 +2832,9 @@ sub process {
>  
>  			if ($sign_off !~ /$signature_tags/) {
>  				my $suggested_signature = find_standard_signature($sign_off);
> +				if ($sign_off =~ /co-authored-by:/i) {
> +					$suggested_signature = "Co-developed-by:";
> +				}
>  				if ($suggested_signature eq "") {
>  					WARN("BAD_SIGN_OFF",
>  					     "Non-standard signature: $sign_off\n" . $herecurr);
> 

Hi Daniel and Peter
Sorry to disturb you. Actually we were planning to introduce a fix for
suggesting users to use "Co-developed-by" tag over "Co-authored-by"
and I noticed that you have earlier used "Co-authored-by" tag.

We feel that users perhaps use this tag as they are unaware of its
standard equivalent tag, "Co-developed-by"

Do you think that this fix will be beneficial for future users? If so,
can you please add your Acked-by to the patch?

Thanks
Aditya