A lookup of a host bridge's corresponding acpi device (struct acpi_device) is not possible, for example: adev = ACPI_COMPANION(&host_bridge->dev); This could be useful to find a host bridge's fwnode handle and to determine and call additional host bridge ACPI parameters and methods such as HID/CID or _UID. Make this work by linking the host bridge to its ACPI fw node. Signed-off-by: Robert Richter <rrichter@xxxxxxx> --- drivers/acpi/pci_root.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/acpi/pci_root.c b/drivers/acpi/pci_root.c index d57cf8454b93..846c979e4c29 100644 --- a/drivers/acpi/pci_root.c +++ b/drivers/acpi/pci_root.c @@ -1083,6 +1083,7 @@ struct pci_bus *acpi_pci_root_create(struct acpi_pci_root *root, goto out_release_info; host_bridge = to_pci_host_bridge(bus->bridge); + host_bridge->dev.fwnode = acpi_fwnode_handle(device); if (!(root->osc_control_set & OSC_PCI_EXPRESS_NATIVE_HP_CONTROL)) host_bridge->native_pcie_hotplug = 0; if (!(root->osc_control_set & OSC_PCI_SHPC_NATIVE_HP_CONTROL)) -- 2.30.2
