On Thu, 16 Nov 2017, Sajjan, Vikas C wrote:
> -----Original Message-----
> From: Thomas Gleixner [mailto:t...@linutronix.de] 
> Sent: Thursday, November 16, 2017 4:35 PM
> To: Sajjan, Vikas C <vikas.cha.saj...@hpe.com>
> Cc: r...@rjwysocki.net; rafael.j.wyso...@intel.com; linux...@vger.kernel.org; 
> linux-a...@vger.kernel.org; linux-kernel@vger.kernel.org; kkama...@gmail.com; 
> mi...@kernel.org; Lakshminarasimha, Sunil Vishwanathpur <sunil...@hpe.com>; 
> Attar, Abdul Lateef <abdul-lateef.at...@hpe.com>
> Subject: Re: [PATCH v2 1/2] acpi/x86: Fix improper handling of SCI INT for 
> platforms supporting only IOAPIC mode

Can you please fix your mail client to not pointlessly copy the full mail
header?

 On Thu, 16 Nov 2017, Thomas Gleixner wrote:

is enough. The rest is in the real mail headers already.

> On Thu, 16 Nov 2017, Vikas C Sajjan wrote:
> > Signed-off-by: Vikas C Sajjan <vikas.cha.saj...@hpe.com>
> > Signed-off-by: Sunil V L <sunil...@hpe.com>
> > Signed-off-by: Abdul Lateef Attar <abdul-lateef.at...@hpe.com>
> 
> This Signed-off-by chain is broken. It says:
> 
>      Vikas wrote the patch and handed it to Sunil
>      Sunil handed it to Abdul
>      Abdul sent it to lkml
> 
> Which is obviously not the case.

> 3 of us worked on it, hence I had put all the 3 "Signed-off-by". Are you
> suggesting to call-out who did what.  Is that what you mean, when you say
> "Signed-off-by chain is broken".

No. As I explained above. The Signed-off-by is a chain. The first one is
from the author. The following ones are from people who handled,
transported or applied the patch.

See Documentation/process/submitting-patches.rst the chapter:

  Developer's Certificate of Origin 1.1

for further clarification.

Unfortunately we have no canonical way to express joint develoment, but we
have used non formal tags for that, like

     Co-developed-by:

which give credits to the people who were involved in the development.

Thanks,

        tglx


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