quoted

Ok, I understand. I will write something like this.

  * Copyright (C) 2012       ST Microelectronics
  *      author: Federico Vaga [off-list ref]
  * Copyright (C) 2010       WindRiver Systems, Inc.
  *      authors: Andreas Kies [off-list ref]
  *               Vlad Lungu [off-list ref]

Sounds perfect to me.

I will answer to this with a patch

As you said, the best place to discuss about it is likely at LKML.
[...]
Btw, this is why it is called "git blame", and not "git authorship":
it is a tool to identify who was the last one that modified the code.
Its main usage is to identify who might have introduced a bug on the
code.

I know I know, it was just a stupid example to expose the problem that I have 
in my mind. I know that it is very difficult (impossible?) to assign the 
authorship of a single line, and git blame it is not the tool to do this :)

I think you understand what I mean despite the stupid example

-- 
Federico Vaga