diff options
Diffstat (limited to 'drivers/pci/host/pci-xgene.c')
| -rw-r--r-- | drivers/pci/host/pci-xgene.c | 22 |
1 files changed, 21 insertions, 1 deletions
diff --git a/drivers/pci/host/pci-xgene.c b/drivers/pci/host/pci-xgene.c index 2988fe136c1e..9d2fd461e9c7 100644 --- a/drivers/pci/host/pci-xgene.c +++ b/drivers/pci/host/pci-xgene.c @@ -600,6 +600,23 @@ static int xgene_pcie_setup(struct xgene_pcie_port *port, return 0; } +static int xgene_pcie_msi_enable(struct pci_bus *bus) +{ + struct device_node *msi_node; + + msi_node = of_parse_phandle(bus->dev.of_node, + "msi-parent", 0); + if (!msi_node) + return -ENODEV; + + bus->msi = of_pci_find_msi_chip_by_node(msi_node); + if (!bus->msi) + return -ENODEV; + + bus->msi->dev = &bus->dev; + return 0; +} + static int xgene_pcie_probe_bridge(struct platform_device *pdev) { struct device_node *dn = pdev->dev.of_node; @@ -636,6 +653,10 @@ static int xgene_pcie_probe_bridge(struct platform_device *pdev) if (!bus) return -ENOMEM; + if (IS_ENABLED(CONFIG_PCI_MSI)) + if (xgene_pcie_msi_enable(bus)) + dev_info(port->dev, "failed to enable MSI\n"); + pci_scan_child_bus(bus); pci_assign_unassigned_bus_resources(bus); pci_bus_add_devices(bus); @@ -652,7 +673,6 @@ static const struct of_device_id xgene_pcie_match_table[] = { static struct platform_driver xgene_pcie_driver = { .driver = { .name = "xgene-pcie", - .owner = THIS_MODULE, .of_match_table = of_match_ptr(xgene_pcie_match_table), }, .probe = xgene_pcie_probe_bridge, |