[RFT PATCH v2 21/42] PCI: rockchip: Convert PCI scan API to pci_scan_root_bus_bridge()
From: Lorenzo Pieralisi <hidden>
Date: 2017-06-08 14:13:21
Also in:
linux-pci
Subsystem:
arm/rockchip soc support, pci subsystem, the rest · Maintainers:
Heiko Stuebner, Bjorn Helgaas, Linus Torvalds
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 <redacted> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Wenrui Li <redacted> Cc: Shawn Lin <shawn.lin@rock-chips.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 0e020b6..cae5a6d 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);
--
2.10.0