diff options
author | Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> | 2017-06-28 15:13:57 -0500 |
---|---|---|
committer | Bjorn Helgaas <bhelgaas@google.com> | 2017-07-02 16:14:24 -0500 |
commit | 90634e8540790461a55450595d5b49cc1854f616 (patch) | |
tree | 0416c95c90dfa9520ab84bf45a937c6f9334bc6f /drivers/pci/host/pcie-rcar.c | |
parent | 6b6de6af324857c2190c309fd01c3de81cab1bbd (diff) | |
download | linux-stable-90634e8540790461a55450595d5b49cc1854f616.tar.gz linux-stable-90634e8540790461a55450595d5b49cc1854f616.tar.bz2 linux-stable-90634e8540790461a55450595d5b49cc1854f616.zip |
PCI: rcar: 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 rcar 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: Simon Horman <horms@verge.net.au>
Diffstat (limited to 'drivers/pci/host/pcie-rcar.c')
-rw-r--r-- | drivers/pci/host/pcie-rcar.c | 38 |
1 files changed, 24 insertions, 14 deletions
diff --git a/drivers/pci/host/pcie-rcar.c b/drivers/pci/host/pcie-rcar.c index cb07c45c1858..8380274d61c1 100644 --- a/drivers/pci/host/pcie-rcar.c +++ b/drivers/pci/host/pcie-rcar.c @@ -450,28 +450,32 @@ done: static int rcar_pcie_enable(struct rcar_pcie *pcie) { struct device *dev = pcie->dev; + struct pci_host_bridge *bridge = pci_host_bridge_from_priv(pcie); struct pci_bus *bus, *child; - LIST_HEAD(res); + int ret; /* Try setting 5 GT/s link speed */ rcar_pcie_force_speedup(pcie); - rcar_pcie_setup(&res, pcie); + rcar_pcie_setup(&bridge->windows, pcie); pci_add_flags(PCI_REASSIGN_ALL_RSRC | PCI_REASSIGN_ALL_BUS); + bridge->dev.parent = dev; + bridge->sysdata = pcie; + bridge->busnr = pcie->root_bus_nr; + bridge->ops = &rcar_pcie_ops; if (IS_ENABLED(CONFIG_PCI_MSI)) - bus = pci_scan_root_bus_msi(dev, pcie->root_bus_nr, - &rcar_pcie_ops, pcie, &res, &pcie->msi.chip); - else - bus = pci_scan_root_bus(dev, pcie->root_bus_nr, - &rcar_pcie_ops, pcie, &res); + bridge->msi = &pcie->msi.chip; - if (!bus) { - dev_err(dev, "Scanning rootbus failed"); - return -ENODEV; + ret = pci_scan_root_bus_bridge(bridge); + if (ret < 0) { + kfree(bridge); + return ret; } + bus = bridge->bus; + pci_fixup_irqs(pci_common_swizzle, of_irq_parse_and_map_pci); pci_bus_size_bridges(bus); @@ -1127,11 +1131,14 @@ static int rcar_pcie_probe(struct platform_device *pdev) unsigned int data; int err; int (*hw_init_fn)(struct rcar_pcie *); + struct pci_host_bridge *bridge; - pcie = devm_kzalloc(dev, sizeof(*pcie), GFP_KERNEL); - if (!pcie) + bridge = pci_alloc_host_bridge(sizeof(*pcie)); + if (!bridge) return -ENOMEM; + pcie = pci_host_bridge_priv(bridge); + pcie->dev = dev; INIT_LIST_HEAD(&pcie->resources); @@ -1141,12 +1148,12 @@ static int rcar_pcie_probe(struct platform_device *pdev) err = rcar_pcie_get_resources(pcie); if (err < 0) { dev_err(dev, "failed to request resources: %d\n", err); - return err; + goto err_free_bridge; } err = rcar_pcie_parse_map_dma_ranges(pcie, dev->of_node); if (err) - return err; + goto err_free_bridge; pm_runtime_enable(dev); err = pm_runtime_get_sync(dev); @@ -1183,6 +1190,9 @@ static int rcar_pcie_probe(struct platform_device *pdev) return 0; +err_free_bridge: + pci_free_host_bridge(bridge); + err_pm_put: pm_runtime_put(dev); |