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| author | Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> | 2017-06-28 23:13:59 +0300 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2017-07-03 00:14:25 +0300 |
| commit | 8c790a82add469a5e901bf612e2c30bf5085564d (patch) | |
| tree | 20b26c51fd001668fb964e160ad7190395c9367c /drivers/pci/host/pcie-xilinx.c | |
| parent | 9815791319a01be1ceca8b0b716219073b29a42d (diff) | |
| download | linux-8c790a82add469a5e901bf612e2c30bf5085564d.tar.xz | |
PCI: xilinx: 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 xilinx 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: Michal Simek <michal.simek@xilinx.com>
Diffstat (limited to 'drivers/pci/host/pcie-xilinx.c')
| -rw-r--r-- | drivers/pci/host/pcie-xilinx.c | 29 |
1 files changed, 19 insertions, 10 deletions
diff --git a/drivers/pci/host/pcie-xilinx.c b/drivers/pci/host/pcie-xilinx.c index 2fe2df51f9f8..761f048480e9 100644 --- a/drivers/pci/host/pcie-xilinx.c +++ b/drivers/pci/host/pcie-xilinx.c @@ -633,6 +633,7 @@ static int xilinx_pcie_probe(struct platform_device *pdev) struct device *dev = &pdev->dev; struct xilinx_pcie_port *port; struct pci_bus *bus, *child; + struct pci_host_bridge *bridge; int err; resource_size_t iobase = 0; LIST_HEAD(res); @@ -640,9 +641,11 @@ static int xilinx_pcie_probe(struct platform_device *pdev) if (!dev->of_node) return -ENODEV; - port = devm_kzalloc(dev, sizeof(*port), GFP_KERNEL); - if (!port) - return -ENOMEM; + bridge = devm_pci_alloc_host_bridge(dev, sizeof(*port)); + if (!bridge) + return -ENODEV; + + port = pci_host_bridge_priv(bridge); port->dev = dev; @@ -671,17 +674,23 @@ static int xilinx_pcie_probe(struct platform_device *pdev) if (err) goto error; - bus = pci_create_root_bus(dev, 0, &xilinx_pcie_ops, port, &res); - if (!bus) { - err = -ENOMEM; - goto error; - } + + list_splice_init(&res, &bridge->windows); + bridge->dev.parent = dev; + bridge->sysdata = port; + bridge->busnr = 0; + bridge->ops = &xilinx_pcie_ops; #ifdef CONFIG_PCI_MSI xilinx_pcie_msi_chip.dev = dev; - bus->msi = &xilinx_pcie_msi_chip; + bridge->msi = &xilinx_pcie_msi_chip; #endif - pci_scan_child_bus(bus); + err = pci_scan_root_bus_bridge(bridge); + if (err < 0) + goto error; + + bus = bridge->bus; + pci_assign_unassigned_bus_resources(bus); #ifndef CONFIG_MICROBLAZE pci_fixup_irqs(pci_common_swizzle, of_irq_parse_and_map_pci); |