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| author | Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> | 2017-06-28 15:13:59 -0500 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2017-07-02 16:14:25 -0500 |
| commit | 9af275be15f75bf6a2b48fda21719ea861a42455 (patch) | |
| tree | 5c7b9dc3689f7eaa64c192476efd04ead69c1d34 /drivers/pci | |
| parent | 8c790a82add469a5e901bf612e2c30bf5085564d (diff) | |
| download | linux-9af275be15f75bf6a2b48fda21719ea861a42455.tar.bz2 | |
PCI: xgene: 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 xgene host code to pci_scan_root_bus_bridge() to improve the
PCI root bus scanning interface.
Tested-by: Khuong Dinh <kdinh@apm.com> # with e1000e
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Cc: Tanmay Inamdar <tinamdar@apm.com>
Diffstat (limited to 'drivers/pci')
| -rw-r--r-- | drivers/pci/host/pci-xgene.c | 21 |
1 files changed, 15 insertions, 6 deletions
diff --git a/drivers/pci/host/pci-xgene.c b/drivers/pci/host/pci-xgene.c index 8cae013e7188..262bedf026c1 100644 --- a/drivers/pci/host/pci-xgene.c +++ b/drivers/pci/host/pci-xgene.c @@ -636,13 +636,16 @@ static int xgene_pcie_probe_bridge(struct platform_device *pdev) struct xgene_pcie_port *port; resource_size_t iobase = 0; struct pci_bus *bus, *child; + struct pci_host_bridge *bridge; int ret; LIST_HEAD(res); - port = devm_kzalloc(dev, sizeof(*port), GFP_KERNEL); - if (!port) + bridge = devm_pci_alloc_host_bridge(dev, sizeof(*port)); + if (!bridge) return -ENOMEM; + port = pci_host_bridge_priv(bridge); + port->node = of_node_get(dn); port->dev = dev; @@ -670,11 +673,17 @@ static int xgene_pcie_probe_bridge(struct platform_device *pdev) if (ret) goto error; - bus = pci_create_root_bus(dev, 0, &xgene_pcie_ops, port, &res); - if (!bus) { - ret = -ENOMEM; + list_splice_init(&res, &bridge->windows); + bridge->dev.parent = dev; + bridge->sysdata = port; + bridge->busnr = 0; + bridge->ops = &xgene_pcie_ops; + + ret = pci_scan_root_bus_bridge(bridge); + if (ret < 0) goto error; - } + + bus = bridge->bus; pci_scan_child_bus(bus); pci_assign_unassigned_bus_resources(bus); |