[PATCH] nvme: don't reject probe due to duplicate IDs for single-ported PCIe devices

[Kanchan Joshi]

On Thu, Jul 13, 2023 at 03:30:42PM +0200, Christoph Hellwig wrote:
>While duplicate IDs are still very harmful, including the potential to easily
>see changing devices in /dev/disk/by-id, it turn out they are extremely
>common for cheap end user NVMe devices.
>
>Relax our check for them for so that it doesn't reject the probe on
>single-ported PCIe devices, but prints a big warning instead.  In doubt
>we'd still like to see quirk entries to disable the potential for
>changing supposed stable device identifier links, but this will at least
>allow users how have two (or more) of these devices to use them without
>having to manually add a new PCI ID entry with the quirk through sysfs or
>by patching the kernel.

Should this go for backport? For the commit 2079f41ec6ffa.