ACPI: property: Allow direct graph endpoint references

By using device and further data node references, allow direct references
to endpoints. These are of form

	Package() { \DEV, "portX", "endpointY" }

where X is the number of the port and Y is the number of the endpoint.

Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

diff --git a/drivers/acpi/property.c b/drivers/acpi/property.c
index 19bdada644351e0b3c55ece144d62576c2948453..10af340eedd230d6b3aeb6367d3d0432117c9bb3 100644 (file)
--- a/drivers/acpi/property.c
+++ b/drivers/acpi/property.c
@@ -1122,9 +1122,9 @@ acpi_graph_get_remote_endpoint(const struct fwnode_handle *__fwnode)
        if (ret)
                return NULL;
 
-       /* Ensure this is a device node. */
+       /* Direct endpoint reference? */
        if (!is_acpi_device_node(args.fwnode))
-               return NULL;
+               return args.nargs ? NULL : args.fwnode;
 
        /*
         * Always require two arguments with the reference: port and