nvme: Removed unused 'regs' variable

The private struct has a 'regs' member that's only written to
and otherwise unused. This change removes it.

Fixes:			b3d9e5013f3e5 (Don't active memory space)
Requested by:		jhb
Reviewed by:		imp, jhb, jrtc27
Differential Revision:	https://reviews.freebsd.org/D55817

3 files changed, 0 insertions, 4 deletions

diff --git a/sys/dev/nvme/nvme_ahci.c b/sys/dev/nvme/nvme_ahci.c
index c50971f83975..8b3b6855bb62 100644
--- a/sys/dev/nvme/nvme_ahci.c
+++ b/sys/dev/nvme/nvme_ahci.c
@@ -79,7 +79,6 @@ nvme_ahci_attach(device_t dev)
 	}
 	ctrlr->bus_tag = rman_get_bustag(ctrlr->resource);
 	ctrlr->bus_handle = rman_get_bushandle(ctrlr->resource);
-	ctrlr->regs = (struct nvme_registers *)ctrlr->bus_handle;
 
 	/* Allocate and setup IRQ */
 	ctrlr->rid = 0;
diff --git a/sys/dev/nvme/nvme_pci.c b/sys/dev/nvme/nvme_pci.c
index 74191df52058..fa5a88844f92 100644
--- a/sys/dev/nvme/nvme_pci.c
+++ b/sys/dev/nvme/nvme_pci.c
@@ -225,7 +225,6 @@ nvme_ctrlr_allocate_bar(struct nvme_controller *ctrlr)
 
 	ctrlr->bus_tag = rman_get_bustag(ctrlr->resource);
 	ctrlr->bus_handle = rman_get_bushandle(ctrlr->resource);
-	ctrlr->regs = (struct nvme_registers *)ctrlr->bus_handle;
 
 	return (0);
 }
diff --git a/sys/dev/nvme/nvme_private.h b/sys/dev/nvme/nvme_private.h
index 3dc62bc11384..95c38fe2e39e 100644
--- a/sys/dev/nvme/nvme_private.h
+++ b/sys/dev/nvme/nvme_private.h
@@ -286,8 +286,6 @@ struct nvme_controller {
 	struct nvme_qpair	adminq;
 	struct nvme_qpair	*ioq;
 
-	struct nvme_registers		*regs;
-
 	struct nvme_controller_data	cdata;
 	struct nvme_namespace		ns[NVME_MAX_NAMESPACES];