Re: [PATCH 07/22] RDMA/irdma: Register an auxiliary driver and implement private channel OPs

+/**
+ * irdma_init_dev - GEN_2 device init
+ * @aux_dev: auxiliary device
+ *
+ * Create device resources, set up queues, pble and hmc objects.
+ * Return 0 if successful, otherwise return error
+ */
+int irdma_init_dev(struct auxiliary_device *aux_dev)
+{
+	struct iidc_auxiliary_object *vo = container_of(aux_dev,
+							struct iidc_auxiliary_object,
+							adev);
+	struct iidc_peer_obj *peer_info = vo->peer_obj;
+	struct irdma_handler *hdl;
+	struct irdma_pci_f *rf;
+	struct irdma_sc_dev *dev;
+	struct irdma_priv_peer_info *priv_peer_info;
+	int err;
+
+	hdl = irdma_find_handler(peer_info->pdev);
+	if (hdl)
+		return -EBUSY;
+
+	hdl = kzalloc(sizeof(*hdl), GFP_KERNEL);
+	if (!hdl)
+		return -ENOMEM;
+
+	rf = &hdl->rf;
+	priv_peer_info = &rf->priv_peer_info;
+	rf->aux_dev = aux_dev;
+	rf->hdl = hdl;
+	dev = &rf->sc_dev;
+	dev->back_dev = rf;
+	rf->gen_ops.init_hw = icrdma_init_hw;
+	rf->gen_ops.request_reset = icrdma_request_reset;
+	rf->gen_ops.register_qset = irdma_lan_register_qset;
+	rf->gen_ops.unregister_qset = irdma_lan_unregister_qset;
+	priv_peer_info->peer_info = peer_info;
+	rf->rdma_ver = IRDMA_GEN_2;
+	irdma_set_config_params(rf);
+	dev->pci_rev = peer_info->pdev->revision;
+	rf->default_vsi.vsi_idx = peer_info->pf_vsi_num;
+	/* save information from peer_info to priv_peer_info*/
+	priv_peer_info->fn_num = PCI_FUNC(peer_info->pdev->devfn);
+	rf->hw.hw_addr = peer_info->hw_addr;
+	rf->pcidev = peer_info->pdev;
+	rf->netdev = peer_info->netdev;
+	priv_peer_info->ftype = peer_info->ftype;
+	priv_peer_info->msix_count = peer_info->msix_count;
+	priv_peer_info->msix_entries = peer_info->msix_entries;
+	irdma_add_handler(hdl);
+	if (irdma_ctrl_init_hw(rf)) {
+		err = -EIO;
+		goto err_ctrl_init;
+	}
+	peer_info->peer_ops = &irdma_peer_ops;
+	peer_info->peer_drv = &irdma_peer_drv;
+	err = peer_info->ops->peer_register(peer_info);
+	if (err)
+		goto err_peer_reg;