From: Rob Herring <robh@kernel.org>
Date: Thu, 20 Aug 2020 21:53:56 -0600
Subject: PCI: dwc: Convert to use pci_host_probe()

Git-commit: 1df793054859eaa69d878f7daffc9f1cf9253a5d
Patch-mainline: v5.10-rc1
References: bsc#1179344

Now that there are no more .scan_bus() callbacks, we can remove it and just
use pci_host_probe().

Link: https://lore.kernel.org/r/20200821035420.380495-17-robh@kernel.org
Signed-off-by: Rob Herring <robh@kernel.org>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: Jingoo Han <jingoohan1@gmail.com>
Cc: Gustavo Pimentel <gustavo.pimentel@synopsys.com>
Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Mian Yousaf Kaukab <yousaf.kaukab@suse.com>
---
 .../pci/controller/dwc/pcie-designware-host.c | 21 +++----------------
 drivers/pci/controller/dwc/pcie-designware.h  |  1 -
 2 files changed, 3 insertions(+), 19 deletions(-)

diff --git a/drivers/pci/controller/dwc/pcie-designware-host.c b/drivers/pci/controller/dwc/pcie-designware-host.c
index 14ffc2cd88be..940edb3e2d3f 100644
--- a/drivers/pci/controller/dwc/pcie-designware-host.c
+++ b/drivers/pci/controller/dwc/pcie-designware-host.c
@@ -300,7 +300,6 @@ int dw_pcie_host_init(struct pcie_port *pp)
 	struct device_node *np = dev->of_node;
 	struct platform_device *pdev = to_platform_device(dev);
 	struct resource_entry *win;
-	struct pci_bus *child;
 	struct pci_host_bridge *bridge;
 	struct resource *cfg_res;
 	int ret;
@@ -436,23 +435,9 @@ int dw_pcie_host_init(struct pcie_port *pp)
 
 	bridge->sysdata = pp;
 
-	ret = pci_scan_root_bus_bridge(bridge);
-	if (ret)
-		goto err_free_msi;
-
-	pp->root_bus = bridge->bus;
-
-	if (pp->ops->scan_bus)
-		pp->ops->scan_bus(pp);
-
-	pci_bus_size_bridges(pp->root_bus);
-	pci_bus_assign_resources(pp->root_bus);
-
-	list_for_each_entry(child, &pp->root_bus->children, node)
-		pcie_bus_configure_settings(child);
-
-	pci_bus_add_devices(pp->root_bus);
-	return 0;
+	ret = pci_host_probe(bridge);
+	if (!ret)
+		return 0;
 
 err_free_msi:
 	if (pci_msi_enabled() && !pp->ops->msi_host_init)
diff --git a/drivers/pci/controller/dwc/pcie-designware.h b/drivers/pci/controller/dwc/pcie-designware.h
index ebcd2aefb6b1..c018f199ca44 100644
--- a/drivers/pci/controller/dwc/pcie-designware.h
+++ b/drivers/pci/controller/dwc/pcie-designware.h
@@ -161,7 +161,6 @@ enum dw_pcie_device_mode {
 
 struct dw_pcie_host_ops {
 	int (*host_init)(struct pcie_port *pp);
-	void (*scan_bus)(struct pcie_port *pp);
 	void (*set_num_vectors)(struct pcie_port *pp);
 	int (*msi_host_init)(struct pcie_port *pp);
 };
-- 
2.26.2