[PATCH 06/15] PCI/ACPI: Link host bridge to its ACPI fw node

[Robert Richter <rrichter@amd.com>]

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@amd.com>
---
 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