x86/PCI: get root CRS before scanning children
This allows us to remove adjust_transparent_bridge_resources and give
x86_pci_root_bus_res_quirks a chance when _CRS is not used or not there.
Acked-by: Gary Hade <garyhade@us.ibm.com>
Tested-by: Gary Hade <garyhade@us.ibm.com>
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
diff --git a/arch/x86/pci/acpi.c b/arch/x86/pci/acpi.c
index 8bf1529..1014eb4 100644
--- a/arch/x86/pci/acpi.c
+++ b/arch/x86/pci/acpi.c
@@ -118,23 +118,6 @@
}
static void
-adjust_transparent_bridge_resources(struct pci_bus *bus)
-{
- struct pci_dev *dev;
-
- list_for_each_entry(dev, &bus->devices, bus_list) {
- int i;
- u16 class = dev->class >> 8;
-
- if (class == PCI_CLASS_BRIDGE_PCI && dev->transparent) {
- for(i = 3; i < PCI_BUS_NUM_RESOURCES; i++)
- dev->subordinate->resource[i] =
- dev->bus->resource[i - 3];
- }
- }
-}
-
-static void
get_current_resources(struct acpi_device *device, int busnum,
int domain, struct pci_bus *bus)
{
@@ -161,8 +144,6 @@
info.res_num = 0;
acpi_walk_resources(device->handle, METHOD_NAME__CRS, setup_resource,
&info);
- if (info.res_num)
- adjust_transparent_bridge_resources(bus);
return;
@@ -225,8 +206,15 @@
*/
memcpy(bus->sysdata, sd, sizeof(*sd));
kfree(sd);
- } else
- bus = pci_scan_bus_parented(NULL, busnum, &pci_root_ops, sd);
+ } else {
+ bus = pci_create_bus(NULL, busnum, &pci_root_ops, sd);
+ if (bus) {
+ if (pci_probe & PCI_USE__CRS)
+ get_current_resources(device, busnum, domain,
+ bus);
+ bus->subordinate = pci_scan_child_bus(bus);
+ }
+ }
if (!bus)
kfree(sd);
@@ -241,8 +229,6 @@
#endif
}
- if (bus && (pci_probe & PCI_USE__CRS))
- get_current_resources(device, busnum, domain, bus);
return bus;
}