On Sat, Sep 29, 2018 at 10:00:29AM +0200, Ard Biesheuvel wrote:

Note that this is the author of the *patch* not necessarily the author
of the code.

Anyone is free to submit patches adding code authored by others as
long as the author has made it available under a suitable license, and
this is actually the whole point of the S-o-B: you are stating to the
next guy that the code included in your patch was made available to
you under a compatible license.

... and the actual author could be named with Originally-by or
Co-Developed-by:, and even in free text in the commit message.

But the correct SOB chain denoting who handled the patch on its way up,
is important.

-- 
Regards/Gruss,
    Boris.

Good mailing practices for 400: avoid top-posting and trim the reply.