@@ -125,8 +125,13 @@ static int versatile_pci_probe(struct platform_device *pdev)
u32 val;
void __iomem *local_pci_cfg_base;
struct pci_bus *bus, *child;
+ struct pci_host_bridge *bridge;
LIST_HEAD(pci_res);
+ bridge = devm_pci_alloc_host_bridge(dev, 0);
+ if (!bridge)
+ return -ENOMEM;
+
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
versatile_pci_base = devm_ioremap_resource(&pdev->dev, res);
if (IS_ERR(versatile_pci_base))
@@ -199,11 +204,20 @@ static int versatile_pci_probe(struct platform_device *pdev)
pci_add_flags(PCI_ENABLE_PROC_DOMAINS);
pci_add_flags(PCI_REASSIGN_ALL_BUS | PCI_REASSIGN_ALL_RSRC);
- bus = pci_scan_root_bus(&pdev->dev, 0, &pci_versatile_ops, NULL, &pci_res);
- if (!bus)
- return -ENOMEM;
+ list_splice_init(&pci_res, &bridge->windows);
+ bridge->dev.parent = &pdev->dev;
+ bridge->sysdata = NULL;
+ bridge->busnr = 0;
+ bridge->ops = &pci_versatile_ops;
+
+ ret = pci_scan_root_bus_bridge(bridge);
+ if (ret < 0)
+ return ret;
+
+ bus = bridge->bus;
pci_fixup_irqs(pci_common_swizzle, of_irq_parse_and_map_pci);
+
pci_assign_unassigned_bus_resources(bus);
list_for_each_entry(child, &bus->children, node)
pcie_bus_configure_settings(child);
The introduction of pci_scan_root_bus_bridge() provides a PCI core API to scan a PCI root bus backed by an already initialized struct pci_host_bridge object, which simplifies the bus scan interface and makes the PCI scan root bus interface easier to generalize as members are added to the struct pci_host_bridge. Convert PCI versatile host code to pci_scan_root_bus_bridge() to improve the PCI root bus scanning interface. Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Rob Herring <robh@kernel.org> --- drivers/pci/host/pci-versatile.c | 20 +++++++++++++++++--- 1 file changed, 17 insertions(+), 3 deletions(-)