[POWERPC] Add "parent" struct device for PCI host bridges

Add a "parent" struct device to our PCI host bridge data structure so that
PCI can be rooted off another device in sysfs.

Note that arch/ppc doesn't use it, only arch/powerpc, though it's available
for both 32 and 64 bits.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>

1 files changed, 4 insertions, 1 deletions

diff --git a/arch/powerpc/kernel/pci_32.c b/arch/powerpc/kernel/pci_32.c
index d32cd500d8b8..0ad101a5fc5e 100644
--- a/arch/powerpc/kernel/pci_32.c
+++ b/arch/powerpc/kernel/pci_32.c
@@ -1269,7 +1269,10 @@ pcibios_init(void)
                 if (pci_assign_all_buses)
                         hose->first_busno = next_busno;
                 hose->last_busno = 0xff;
-                bus = pci_scan_bus(hose->first_busno, hose->ops, hose);
+                bus = pci_scan_bus_parented(hose->parent, hose->first_busno,
+                                            hose->ops, hose);
+                if (bus)
+                        pci_bus_add_devices(bus);
                 hose->last_busno = bus->subordinate;
                 if (pci_assign_all_buses || next_busno <= hose->last_busno)
                         next_busno = hose->last_busno + pcibios_assign_bus_offset;