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| author | Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> | 2017-06-28 22:14:00 +0200 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2017-07-02 23:14:26 +0200 |
| commit | ae13cb9b1926e821ab8b5f00995f829f10d9fa20 (patch) | |
| tree | 7005f61fe522f6d542c1b75b61ce28ec1b2cd584 /drivers | |
| parent | PCI: generic: Convert PCI scan API to pci_scan_root_bus_bridge() (diff) | |
| download | linux-ae13cb9b1926e821ab8b5f00995f829f10d9fa20.tar.xz linux-ae13cb9b1926e821ab8b5f00995f829f10d9fa20.zip | |
PCI: rockchip: Convert PCI scan API to pci_scan_root_bus_bridge()
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>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/pci/host/pcie-rockchip.c | 22 |
1 files 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); |