[PATCH] nvme: Add error checking in nvme_create_io_queues

[Keith Busch]

On Mon, 28 Sep 2015, Christoph Hellwig wrote:
> On Mon, Sep 28, 2015 at 01:50:23PM +0000, Keith Busch wrote:
>> A resume from S3/S4 will deadlock if we try to delete inaccessible
>> disks from the resume context, so using the work queue instead. There
>> is probably a better way to do this now that we probe asynchronously,
>> we can resume the same way.
>
> Is this still the case with the nvme_io_incapable check in place?  What
> are the symptoms?  Unfortunately I can't test PM easily on my test
> systems with NVMe cards as they are all remotely managed server class
> systems.

Good point, I think that will work. I don't recall the exact sympotoms
(it's been two years), but I believe related to the same deadlock.
I'll try this out on a desktop system.