nvme: consolidate common code from ->reset_work

No change in behavior except that the FC code cancels two work items a
little later now.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: James Smart <james.smart@broadcom.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>

drivers/nvme/host/core.c

@@ -102,7 +102,11 @@ static void nvme_delete_ctrl_work(struct work_struct *work)
 	struct nvme_ctrl *ctrl =
 		container_of(work, struct nvme_ctrl, delete_work);
 
+	nvme_stop_ctrl(ctrl);
+	nvme_remove_namespaces(ctrl);
 	ctrl->ops->delete_ctrl(ctrl);
+	nvme_uninit_ctrl(ctrl);
+	nvme_put_ctrl(ctrl);
 }
 
 int nvme_delete_ctrl(struct nvme_ctrl *ctrl)

drivers/nvme/host/fc.c

@@ -2640,24 +2640,11 @@ nvme_fc_delete_ctrl(struct nvme_ctrl *nctrl)
 
 	cancel_work_sync(&ctrl->ctrl.reset_work);
 	cancel_delayed_work_sync(&ctrl->connect_work);
-	nvme_stop_ctrl(&ctrl->ctrl);
-	nvme_remove_namespaces(&ctrl->ctrl);
 	/*
 	 * kill the association on the link side.  this will block
 	 * waiting for io to terminate
 	 */
 	nvme_fc_delete_association(ctrl);
-
-	/*
-	 * tear down the controller
-	 * After the last reference on the nvme ctrl is removed,
-	 * the transport nvme_fc_nvme_ctrl_freed() callback will be
-	 * invoked. From there, the transport will tear down it's
-	 * logical queues and association.
-	 */
-	nvme_uninit_ctrl(&ctrl->ctrl);
-
-	nvme_put_ctrl(&ctrl->ctrl);
 }
 
 static void

drivers/nvme/host/rdma.c

@@ -1757,11 +1757,7 @@ static void nvme_rdma_shutdown_ctrl(struct nvme_rdma_ctrl *ctrl, bool shutdown)
 
 static void nvme_rdma_delete_ctrl(struct nvme_ctrl *ctrl)
 {
-	nvme_stop_ctrl(ctrl);
-	nvme_remove_namespaces(ctrl);
 	nvme_rdma_shutdown_ctrl(to_rdma_ctrl(ctrl), true);
-	nvme_uninit_ctrl(ctrl);
-	nvme_put_ctrl(ctrl);
 }
 
 static void nvme_rdma_reset_ctrl_work(struct work_struct *work)

drivers/nvme/target/loop.c

@@ -440,11 +440,7 @@ static void nvme_loop_shutdown_ctrl(struct nvme_loop_ctrl *ctrl)
 
 static void nvme_loop_delete_ctrl_host(struct nvme_ctrl *ctrl)
 {
-	nvme_stop_ctrl(ctrl);
-	nvme_remove_namespaces(ctrl);
 	nvme_loop_shutdown_ctrl(to_loop_ctrl(ctrl));
-	nvme_uninit_ctrl(ctrl);
-	nvme_put_ctrl(ctrl);
 }
 
 static void nvme_loop_delete_ctrl(struct nvmet_ctrl *nctrl)