diff options
| author | Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> | 2017-06-28 23:13:58 +0300 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2017-07-03 00:14:25 +0300 |
| commit | 9815791319a01be1ceca8b0b716219073b29a42d (patch) | |
| tree | 3c838d6eabd0b86643f8e262c3c75bdf04b70424 /drivers/pci | |
| parent | 4b380678f5a7d926ebe3ae163f0aff2faa925329 (diff) | |
| download | linux-9815791319a01be1ceca8b0b716219073b29a42d.tar.xz | |
PCI: altera: 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 altera 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: Ley Foon Tan <lftan@altera.com>
Diffstat (limited to 'drivers/pci')
| -rw-r--r-- | drivers/pci/host/pcie-altera.c | 22 |
1 files changed, 16 insertions, 6 deletions
diff --git a/drivers/pci/host/pcie-altera.c b/drivers/pci/host/pcie-altera.c index 75ec5cea26f6..7f023b286aaf 100644 --- a/drivers/pci/host/pcie-altera.c +++ b/drivers/pci/host/pcie-altera.c @@ -579,12 +579,14 @@ static int altera_pcie_probe(struct platform_device *pdev) struct altera_pcie *pcie; struct pci_bus *bus; struct pci_bus *child; + struct pci_host_bridge *bridge; int ret; - pcie = devm_kzalloc(dev, sizeof(*pcie), GFP_KERNEL); - if (!pcie) + bridge = devm_pci_alloc_host_bridge(dev, sizeof(*pcie)); + if (!bridge) return -ENOMEM; + pcie = pci_host_bridge_priv(bridge); pcie->pdev = pdev; ret = altera_pcie_parse_dt(pcie); @@ -613,12 +615,20 @@ static int altera_pcie_probe(struct platform_device *pdev) cra_writel(pcie, P2A_INT_ENA_ALL, P2A_INT_ENABLE); altera_pcie_host_init(pcie); - bus = pci_scan_root_bus(dev, pcie->root_bus_nr, &altera_pcie_ops, - pcie, &pcie->resources); - if (!bus) - return -ENOMEM; + list_splice_init(&pcie->resources, &bridge->windows); + bridge->dev.parent = dev; + bridge->sysdata = pcie; + bridge->busnr = pcie->root_bus_nr; + bridge->ops = &altera_pcie_ops; + + ret = pci_scan_root_bus_bridge(bridge); + if (ret < 0) + return ret; + + bus = bridge->bus; pci_fixup_irqs(pci_common_swizzle, of_irq_parse_and_map_pci); + pci_assign_unassigned_bus_resources(bus); /* Configure PCI Express setting. */ |