[PATCH] nvme: Added QUIRK for Samsung PM1725a

[Keith Busch]

On Tue, Dec 08, 2020 at 02:54:01PM +0100, Christoph Hellwig wrote:
> On Tue, Dec 08, 2020 at 08:35:14AM -0500, Gopal Tiwari wrote:
> > These are two different devices. Only one of the two NVME devices is seen. The other device is rejected  due to “Duplicate cntlid”. 
> 
> So two card with one controller each, and both have the same subnqn.
> Ok.  I guess the quirk is exactly right in this case, although I would
> not have expected this bug from an enterprise drive from a somewhat
> reputable vendor.

And it has CMIC capabilities! The quirk means we're using driver
generated nqn's for multipath detection, so it won't work with
multipath: the fake nqn uses the controller serial number, so all the
controllers in the subsystem will get different nqn's.