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authorLorenzo Pieralisi <lorenzo.pieralisi@arm.com>2017-06-28 15:13:56 -0500
committerBjorn Helgaas <bhelgaas@google.com>2017-07-02 16:14:23 -0500
commit6b6de6af324857c2190c309fd01c3de81cab1bbd (patch)
tree414eb6ab9705730a66105e5b8f4c9fdfd5d4e692
parent295aeb98a3220fe09c81fd4c8ad6e7884e05193d (diff)
PCI: aardvark: 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 aardvark 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: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
-rw-r--r--drivers/pci/host/pci-aardvark.c21
1 files changed, 15 insertions, 6 deletions
diff --git a/drivers/pci/host/pci-aardvark.c b/drivers/pci/host/pci-aardvark.c
index 37d0bcd31f8a..5fb9b620ac78 100644
--- a/drivers/pci/host/pci-aardvark.c
+++ b/drivers/pci/host/pci-aardvark.c
@@ -886,12 +886,14 @@ static int advk_pcie_probe(struct platform_device *pdev)
struct advk_pcie *pcie;
struct resource *res;
struct pci_bus *bus, *child;
+ struct pci_host_bridge *bridge;
int ret, irq;
- pcie = devm_kzalloc(dev, sizeof(struct advk_pcie), GFP_KERNEL);
- if (!pcie)
+ bridge = devm_pci_alloc_host_bridge(dev, sizeof(struct advk_pcie));
+ if (!bridge)
return -ENOMEM;
+ pcie = pci_host_bridge_priv(bridge);
pcie->pdev = pdev;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
@@ -929,14 +931,21 @@ static int advk_pcie_probe(struct platform_device *pdev)
return ret;
}
- bus = pci_scan_root_bus(dev, 0, &advk_pcie_ops,
- pcie, &pcie->resources);
- if (!bus) {
+ list_splice_init(&pcie->resources, &bridge->windows);
+ bridge->dev.parent = dev;
+ bridge->sysdata = pcie;
+ bridge->busnr = 0;
+ bridge->ops = &advk_pcie_ops;
+
+ ret = pci_scan_root_bus_bridge(bridge);
+ if (ret < 0) {
advk_pcie_remove_msi_irq_domain(pcie);
advk_pcie_remove_irq_domain(pcie);
- return -ENOMEM;
+ return ret;
}
+ bus = bridge->bus;
+
pci_bus_assign_resources(bus);
list_for_each_entry(child, &bus->children, node)