From: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Date: Wed, 28 Jun 2017 15:14:00 -0500
Subject: PCI: rockchip: Convert PCI scan API to pci_scan_root_bus_bridge()
Git-commit: ae13cb9b1926e821ab8b5f00995f829f10d9fa20
Patch-mainline: v4.13-rc1
References: fate#326572
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 rockchip 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>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Cc: Wenrui Li <wenrui.li@rock-chips.com>
Cc: Shawn Lin <shawn.lin@rock-chips.com>
Signed-off-by: Mian Yousaf Kaukab <yousaf.kaukab@suse.com>
---
drivers/pci/host/pcie-rockchip.c | 22 ++++++++++++++++------
1 file changed, 16 insertions(+), 6 deletions(-)
diff --git a/drivers/pci/host/pcie-rockchip.c b/drivers/pci/host/pcie-rockchip.c
index 0e020b6e0943..cae5a6dec8b0 100644
--- a/drivers/pci/host/pcie-rockchip.c
+++ b/drivers/pci/host/pcie-rockchip.c
@@ -1284,6 +1284,7 @@ static int rockchip_pcie_probe(struct platform_device *pdev)
struct rockchip_pcie *rockchip;
struct device *dev = &pdev->dev;
struct pci_bus *bus, *child;
+ struct pci_host_bridge *bridge;
struct resource_entry *win;
resource_size_t io_base;
struct resource *mem;
@@ -1295,10 +1296,12 @@ static int rockchip_pcie_probe(struct platform_device *pdev)
if (!dev->of_node)
return -ENODEV;
- rockchip = devm_kzalloc(dev, sizeof(*rockchip), GFP_KERNEL);
- if (!rockchip)
+ bridge = devm_pci_alloc_host_bridge(dev, sizeof(*rockchip));
+ if (!bridge)
return -ENOMEM;
+ rockchip = pci_host_bridge_priv(bridge);
+
platform_set_drvdata(pdev, rockchip);
rockchip->dev = dev;
@@ -1396,11 +1399,18 @@ static int rockchip_pcie_probe(struct platform_device *pdev)
goto err_free_res;
}
- bus = pci_scan_root_bus(&pdev->dev, 0, &rockchip_pcie_ops, rockchip, &res);
- if (!bus) {
- err = -ENOMEM;
+ list_splice_init(&res, &bridge->windows);
+ bridge->dev.parent = &pdev->dev;
+ bridge->sysdata = rockchip;
+ bridge->busnr = 0;
+ bridge->ops = &rockchip_pcie_ops;
+
+ err = pci_scan_root_bus_bridge(bridge);
+ if (!err)
goto err_free_res;
- }
+
+ bus = bridge->bus;
+
rockchip->root_bus = bus;
pci_bus_size_bridges(bus);
--
2.11.0