Am 10.07.2013 09:41, schrieb Peter Maydell:
> On 10 July 2013 06:08,  <peter.crosthwa...@xilinx.com> wrote:
>> From: Peter Crosthwaite <peter.crosthwa...@xilinx.com>
>>
>> The ARM A9 MPCore has a timer that is global to all CPUs in the mpcore.
>> The timer is shared but each CPU has a private independent comparator
>> and interrupt.
>>
>> Original version contributed by Francois LEGAL.
>>
>> Signed-off-by: Peter Crosthwaite <peter.crosthwa...@xilinx.com>
>> ---
>> Francois, do you want to re-add your SOB? I have changed the device
>> a lot since your V2.

If you have a DCO for a patch you're reusing, you should never "drop" it
from your patch. You can still leave the textual explanation there.

> The usual way to indicate this (assuming Francois signed off the
> original patchset) is something like:
> 
>   Signed-off-by: Original Author
>   [You: <short description of subsequent changes>]
>   Signed-off-by: Your Name

Add to that, the difference between From and SOB indicates that you did
more than just cosmetic touches. For example, when I wrote from scratch
a new SoC QOM object I used my From and the original author's Sob (to
put the blame on me while recording the DCO), whereas when I purely
updated code to MemoryRegions, Coding Style, QOM casts, etc. I use the
original author's From and [AF: ...].

Andreas

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