diff --git a/drivers/pci/setup-bus.c b/drivers/pci/setup-bus.c
index 784da9d..b478c7b 100644
--- a/drivers/pci/setup-bus.c
+++ b/drivers/pci/setup-bus.c
@@ -849,14 +849,12 @@ void __ref __pci_bus_size_bridges(struct pci_bus *bus,
 		break;
 
 	case PCI_CLASS_BRIDGE_PCI:
+		/* don't size subtractive decoding (transparent)
+		 * PCI-to-PCI bridges */
+		if (bus->self->transparent)
+			break;
 		pci_bridge_check_ranges(bus);
-		if (bus->self->is_hotplug_bridge) {
-			additional_io_size  = pci_hotplug_io_size;
-			additional_mem_size = pci_hotplug_mem_size;
-		}
-		/*
-		 * Follow thru
-		 */
+		/* fall through */
 	default:
 		pbus_size_io(bus, 0, additional_io_size, realloc_head);
 		/* If the bridge supports prefetchable range, size it