static ACPI_STATUS AcpiNsSearchParentTree	(	UINT32	TargetName,
		ACPI_NAMESPACE_NODE *	Node,
		ACPI_OBJECT_TYPE	Type,
		ACPI_NAMESPACE_NODE **	ReturnNode
	)		`[static]`

Definition at line 275 of file nssearch.c.

Referenced by AcpiNsSearchAndEnter().

{
    ACPI_STATUS             Status;
    ACPI_NAMESPACE_NODE     *ParentNode;


    ACPI_FUNCTION_TRACE (NsSearchParentTree);


    ParentNode = Node->Parent;

    /*
     * If there is no parent (i.e., we are at the root) or type is "local",
     * we won't be searching the parent tree.
     */
    if (!ParentNode)
    {
        ACPI_DEBUG_PRINT ((ACPI_DB_NAMES, "[%4.4s] has no parent\n",
            ACPI_CAST_PTR (char, &TargetName)));
        return_ACPI_STATUS (AE_NOT_FOUND);
    }

    if (AcpiNsLocal (Type))
    {
        ACPI_DEBUG_PRINT ((ACPI_DB_NAMES,
            "[%4.4s] type [%s] must be local to this scope (no parent search)\n",
            ACPI_CAST_PTR (char, &TargetName), AcpiUtGetTypeName (Type)));
        return_ACPI_STATUS (AE_NOT_FOUND);
    }

    /* Search the parent tree */

    ACPI_DEBUG_PRINT ((ACPI_DB_NAMES,
        "Searching parent [%4.4s] for [%4.4s]\n",
        AcpiUtGetNodeName (ParentNode), ACPI_CAST_PTR (char, &TargetName)));

    /* Search parents until target is found or we have backed up to the root */

    while (ParentNode)
    {
        /*
         * Search parent scope. Use TYPE_ANY because we don't care about the
         * object type at this point, we only care about the existence of
         * the actual name we are searching for. Typechecking comes later.
         */
        Status = AcpiNsSearchOneScope (
                    TargetName, ParentNode, ACPI_TYPE_ANY, ReturnNode);
        if (ACPI_SUCCESS (Status))
        {
            return_ACPI_STATUS (Status);
        }

        /* Not found here, go up another level (until we reach the root) */

        ParentNode = ParentNode->Parent;
    }

    /* Not found in parent tree */

    return_ACPI_STATUS (AE_NOT_FOUND);
}

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