nvme-fc: return non-zero status code when fails to create association

Return non-zero status code(-EIO) when needed, so re-connecting or
deleting controller will be triggered properly.

Signed-off-by: Michael Liang <mliang@purestorage.com>
Reviewed-by: Caleb Sander <csander@purestorage.com>
Reviewed-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Keith Busch <kbusch@kernel.org>

Author: mliang-pure

drivers/nvme/host/fc.c

@@ -2551,6 +2551,9 @@ nvme_fc_error_recovery(struct nvme_fc_ctrl *ctrl, char *errmsg)
 	if (ctrl->ctrl.state == NVME_CTRL_CONNECTING) {
 		__nvme_fc_abort_outstanding_ios(ctrl, true);
 		set_bit(ASSOC_FAILED, &ctrl->flags);
+		dev_warn(ctrl->ctrl.device,
+			"NVME-FC{%d}: transport error during (re)connect\n",
+			ctrl->cnum);
 		return;
 	}
 
@@ -3110,7 +3113,9 @@ nvme_fc_create_association(struct nvme_fc_ctrl *ctrl)
 	 */
 
 	ret = nvme_enable_ctrl(&ctrl->ctrl);
-	if (ret || test_bit(ASSOC_FAILED, &ctrl->flags))
+	if (!ret && test_bit(ASSOC_FAILED, &ctrl->flags))
+		ret = -EIO;
+	if (ret)
 		goto out_disconnect_admin_queue;
 
 	ctrl->ctrl.max_segments = ctrl->lport->ops->max_sgl_segments;
@@ -3120,7 +3125,9 @@ nvme_fc_create_association(struct nvme_fc_ctrl *ctrl)
 	nvme_unquiesce_admin_queue(&ctrl->ctrl);
 
 	ret = nvme_init_ctrl_finish(&ctrl->ctrl, false);
-	if (ret || test_bit(ASSOC_FAILED, &ctrl->flags))
+	if (!ret && test_bit(ASSOC_FAILED, &ctrl->flags))
+		ret = -EIO;
+	if (ret)
 		goto out_disconnect_admin_queue;
 
 	/* sanity checks */
@@ -3165,7 +3172,9 @@ nvme_fc_create_association(struct nvme_fc_ctrl *ctrl)
 		else
 			ret = nvme_fc_recreate_io_queues(ctrl);
 	}
-	if (ret || test_bit(ASSOC_FAILED, &ctrl->flags))
+	if (!ret && test_bit(ASSOC_FAILED, &ctrl->flags))
+		ret = -EIO;
+	if (ret)
 		goto out_term_aen_ops;
 
 	changed = nvme_change_ctrl_state(&ctrl->ctrl, NVME_CTRL_LIVE);
@@ -3180,6 +3189,9 @@ nvme_fc_create_association(struct nvme_fc_ctrl *ctrl)
 out_term_aen_ops:
 	nvme_fc_term_aen_ops(ctrl);
 out_disconnect_admin_queue:
+	dev_warn(ctrl->ctrl.device,
+		"NVME-FC{%d}: create_assoc failed, assoc_id %llx ret %d\n",
+		ctrl->cnum, ctrl->association_id, ret);
 	/* send a Disconnect(association) LS to fc-nvme target */
 	nvme_fc_xmt_disconnect_assoc(ctrl);
 	spin_lock_irqsave(&ctrl->lock, flags);