proper controller state machine and more common code V2

[Jens Axboe]

On 04/26/2016 05:51 AM, Christoph Hellwig wrote:
> This series introduces a controller state machine based on code that Sagi
> did for the Fabrics driver, and moves the namespace scanning and AER code
> to nvme-core now that we have that state machine.
>
> Changes since V1:
>   - renamed the finished_scan method to post_scan

Applied for 4.7.

-- 
Jens Axboe