int num_slots;                  /* Number of slots on ctlr */
        int slot_num_inc;               /* 1 or -1 */
        struct pci_dev *pci_dev;
-       struct pci_bus *pci_bus;
        struct list_head slot_list;
        struct event_info event_queue[MAX_EVENTS];
        struct slot *slot;
 
 
        pci_set_drvdata(pdev, ctrl);
 
-       ctrl->pci_bus = kmalloc(sizeof(*ctrl->pci_bus), GFP_KERNEL);
-       if (!ctrl->pci_bus) {
-               err("%s: out of memory\n", __FUNCTION__);
-               rc = -ENOMEM;
-               goto err_out_unmap_mmio_region;
-       }
-       memcpy (ctrl->pci_bus, pdev->bus, sizeof (*ctrl->pci_bus));
        ctrl->bus = pdev->bus->number;  /* ctrl bus */
        ctrl->slot_bus = pdev->subordinate->number;  /* bus controlled by this HPC */
 
        rc = init_slots(ctrl);
        if (rc) {
                err(msg_initialization_err, 6);
-               goto err_out_free_ctrl_slot;
+               goto err_out_release_ctlr;
        }
 
        t_slot = pciehp_find_slot(ctrl, ctrl->slot_device_offset);
 
 err_out_free_ctrl_slot:
        cleanup_slots(ctrl);
-       kfree(ctrl->pci_bus);
-err_out_unmap_mmio_region:
+err_out_release_ctlr:
        ctrl->hpc_ops->release_ctlr(ctrl);
 err_out_free_ctrl:
        kfree(ctrl);
        while (ctrl) {
                cleanup_slots(ctrl);
 
-               kfree (ctrl->pci_bus);
-
                ctrl->hpc_ops->release_ctlr(ctrl);
 
                tctrl = ctrl;