Commit 7415c14c authored May 20, 2016 by Gavin Shan Committed by Michael Ellerman Jun 21, 2016

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>

parent c5f7700b

arch/powerpc/kernel/pci-common.c

+6 −2

Original line number	Diff line number	Diff line
		@@ -1444,8 +1444,12 @@ void pcibios_finish_adding_to_bus(struct pci_bus *bus)
		/* Allocate bus and devices resources */
		pcibios_allocate_bus_resources(bus);
		pcibios_claim_one_bus(bus);
		if (!pci_has_flag(PCI_PROBE_ONLY))
		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);