[PATCH] nvme: retrigger ANA log update if group descriptor isn't found

[Christoph Hellwig]

On Mon, Dec 07, 2020 at 07:46:50AM -0800, Keith Busch wrote:
> > But as I just outlined it just papers over buggy controllers.  I really
> > don't think we should just silently do that.
> 
> Okay, that's fine with me too. I agree with you on what the correct
> event sequence should be, but I just thought this looks like a fairly
> harmless work-around.

I see three major downsides:

 (1) it papers over our host side bug where we do not process the
     different AENs in the order that the controller generated them
 (2) the code is black magic as there is no indicator why this condition
     would happen