PCI: xgene: Use pci_host_probe() to register host

The xgene host driver does the same host registration and bus scanning
calls as pci_host_probe, so let's use it instead.

Link: https://lore.kernel.org/r/20200522234832.954484-10-robh@kernel.org
Signed-off-by: Rob Herring <robh@kernel.org>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: Toan Le <toan@os.amperecomputing.com>

diff --git a/drivers/pci/controller/pci-xgene.c b/drivers/pci/controller/pci-xgene.c
index d1efa8f..5aee802 100644 (file)
--- a/drivers/pci/controller/pci-xgene.c
+++ b/drivers/pci/controller/pci-xgene.c
@@ -591,7 +591,6 @@ static int xgene_pcie_probe(struct platform_device *pdev)
        struct device *dev = &pdev->dev;
        struct device_node *dn = dev->of_node;
        struct xgene_pcie_port *port;
-       struct pci_bus *bus, *child;
        struct pci_host_bridge *bridge;
        int ret;
 
@@ -632,17 +631,7 @@ static int xgene_pcie_probe(struct platform_device *pdev)
        bridge->map_irq = of_irq_parse_and_map_pci;
        bridge->swizzle_irq = pci_common_swizzle;
 
-       ret = pci_scan_root_bus_bridge(bridge);
-       if (ret < 0)
-               return ret;
-
-       bus = bridge->bus;
-
-       pci_assign_unassigned_bus_resources(bus);
-       list_for_each_entry(child, &bus->children, node)
-               pcie_bus_configure_settings(child);
-       pci_bus_add_devices(bus);
-       return 0;
+       return pci_host_probe(bridge);
 }
 
 static const struct of_device_id xgene_pcie_match_table[] = {