Subject: [PATCH] PCI: check pci bus address for unassigned res We should compare res->start with root bus window offset. Otherwise will have problem with arch that support hostbridge resource offset. BenH pointed out that during reviewing patchset that separate assign unassigned to per root buses. According to Bjorn, have it in separated patch. Use pcibios_resource_to_bus to get region at first, and check region.start instead. Suggested-by: Benjamin Herrenschmidt Signed-off-by: Yinghai Lu --- drivers/pci/setup-bus.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) Index: linux-2.6/drivers/pci/setup-bus.c =================================================================== --- linux-2.6.orig/drivers/pci/setup-bus.c +++ linux-2.6/drivers/pci/setup-bus.c @@ -1420,9 +1420,14 @@ static int check_unassigned_resources(st for (i = PCI_IOV_RESOURCES; i <= PCI_IOV_RESOURCE_END; i++) { struct resource *r = &dev->resource[i]; + struct pci_bus_region region; /* Not assigned, or rejected by kernel ? */ - if (r->flags && !r->start) { + if (!r->flags) + continue; + + pcibios_resource_to_bus(dev, ®ion, r); + if (!region.start) { (*unassigned)++; return 1; /* return early from pci_walk_bus */ }