lkml.org 
[lkml]   [2022]   [Aug]   [31]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    Patch in this message
    /
    From
    Subject[PATCH 06/15] PCI/ACPI: Link host bridge to its ACPI fw node
    Date
    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
    \
     
     \ /
      Last update: 2022-08-31 10:18    [W:4.038 / U:0.428 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site