nvme: show subsys nqn for duplicate cntlids

The driver assigned nvme handle isn't persistent across reboots, so is
not enough information to match up where the collisions are occuring.
Add the subsys nqn string to the output so that it can more easily be
identified later.

Link: https://bugzilla.kernel.org/show_bug.cgi?id=215099Signed-off-by: Keith Busch <kbusch@kernel.org>
Signed-off-by: Christoph Hellwig <hch@lst.de>

drivers/nvme/host/core.c

@@ -2696,8 +2696,9 @@ static bool nvme_validate_cntlid(struct nvme_subsystem *subsys,
 
 		if (tmp->cntlid == ctrl->cntlid) {
 			dev_err(ctrl->device,
-				"Duplicate cntlid %u with %s, rejecting\n",
-				ctrl->cntlid, dev_name(tmp->device));
+				"Duplicate cntlid %u with %s, subsys %s, rejecting\n",
+				ctrl->cntlid, dev_name(tmp->device),
+				subsys->subnqn);
 			return false;
 		}