The BSD license (except for the BSD 4-clause) is friendly towards the ALv2 one:

https://www.apache.org/legal/resolved.html#category-b 
<https://www.apache.org/legal/resolved.html#category-b>

I suppose that the worst case is that we keep that contributed code under the 
BSD license, and make necessary references, like in NOTICE?

-Flavio

> On 15 Dec 2019, at 22:18, Gregory Nutt <spudan...@gmail.com> wrote:
> 
> 
>>> So, could we just remove the original BSD header
>>> from Samsung modified files and just keep their Apache license into
>>> those file?
>> I don’t recommend we do that as they may of made changes or the files may of 
>> changed since they copied them. They probably also used teh 3rd party header 
>> not the ASF one.
> 
> No Samsung files could be brought in until they are made to conform to the 
> NuttX coding standard (Yes, Samsung changed the coding standard too).  If 
> they are reconverted to the NuttX standard, it should be pretty easy to see 
> any differences.
> 
> I think we are talking about a doomsday scenario here.  We need to get 
> creative only if there is a snag.  Let's assume that there will be no snag 
> (but also be prepared with Plan B).
> 
> Greg
> 
> 

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