powerpc/pci: Update bridge windows on PCI plug
On the PCI plugging event, PCI slot's subordinate devices are
scanned and their (IO and MMIO) resources are assigned. Platform
dependent resources (PE#, IO/MMIO/DMA windows) are allocated or
created on updating windows of the slot's upstream bridge.
This updates the windows of the hot plugged slot's upstream bridge
in pcibios_finish_adding_to_bus() so that the platform resources
(PE#, IO/MMIO/DMA segments) are allocated or created accordingly.
Signed-off-by: Gavin Shan <gwshan@linux.vnet.ibm.com>
Reviewed-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
diff --git a/arch/powerpc/kernel/pci-common.c b/arch/powerpc/kernel/pci-common.c
index 40df3a5..be9e515 100644
--- a/arch/powerpc/kernel/pci-common.c
+++ b/arch/powerpc/kernel/pci-common.c
@@ -1444,8 +1444,12 @@
/* Allocate bus and devices resources */
pcibios_allocate_bus_resources(bus);
pcibios_claim_one_bus(bus);
- if (!pci_has_flag(PCI_PROBE_ONLY))
- pci_assign_unassigned_bus_resources(bus);
+ if (!pci_has_flag(PCI_PROBE_ONLY)) {
+ if (bus->self)
+ pci_assign_unassigned_bridge_resources(bus->self);
+ else
+ pci_assign_unassigned_bus_resources(bus);
+ }
/* Fixup EEH */
eeh_add_device_tree_late(bus);