diff --git a/arch/mips/pci/pci.c b/arch/mips/pci/pci.c
index 6c5c684..589b745 100644
--- a/arch/mips/pci/pci.c
+++ b/arch/mips/pci/pci.c
@@ -141,6 +141,7 @@
 
 		bus = pci_scan_bus(next_busno, hose->pci_ops, hose);
 		hose->bus = bus;
+		need_domain_info = need_domain_info || hose->index;
 		hose->need_domain_info = need_domain_info;
 		if (bus) {
 			next_busno = bus->subordinate + 1;