diff --git a/drivers/pci/hotplug/sgi_hotplug.c b/drivers/pci/hotplug/sgi_hotplug.c
index de573113c102519e9851e70fc20c62fea5517683..b0bb3b537bb0facd406bc99381116d25b8668e31 100644
--- a/drivers/pci/hotplug/sgi_hotplug.c
+++ b/drivers/pci/hotplug/sgi_hotplug.c
@@ -398,11 +398,13 @@ static int enable_slot(struct hotplug_slot *bss_hotplug_slot)
 				sn_io_slot_fixup(dev);
 			if (dev->hdr_type == PCI_HEADER_TYPE_BRIDGE) {
 				unsigned char sec_bus;
+				int max;
 				pci_read_config_byte(dev, PCI_SECONDARY_BUS,
 						     &sec_bus);
 				new_bus = pci_add_new_bus(dev->bus, dev,
 							  sec_bus);
-				pci_scan_child_bus(new_bus);
+				max = pci_scan_child_bus(new_bus);
+				pci_bus_update_busn_res_end(new_bus, max);
 				new_ppb = 1;
 			}
 			pci_dev_put(dev);