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// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0/******************************************************************************* * * Module Name: nseval - Object evaluation, includes control method execution * ******************************************************************************/ACPI_MODULE_NAME("nseval")/* Local prototypes */static voidacpi_ns_exec_module_code(union acpi_operand_object *method_obj, struct acpi_evaluate_info *info);/******************************************************************************* * * FUNCTION: acpi_ns_evaluate * * PARAMETERS: info - Evaluation info block, contains these fields * and more: * prefix_node - Prefix or Method/Object Node to execute * relative_path - Name of method to execute, If NULL, the * Node is the object to execute * parameters - List of parameters to pass to the method, * terminated by NULL. Params itself may be * NULL if no parameters are being passed. * parameter_type - Type of Parameter list * return_object - Where to put method's return value (if * any). If NULL, no value is returned. * flags - ACPI_IGNORE_RETURN_VALUE to delete return * * RETURN: Status * * DESCRIPTION: Execute a control method or return the current value of an * ACPI namespace object. * * MUTEX: Locks interpreter * ******************************************************************************/acpi_status acpi_ns_evaluate(struct acpi_evaluate_info *info){ acpi_status status; ACPI_FUNCTION_TRACE(ns_evaluate); if (!info) { return_ACPI_STATUS(AE_BAD_PARAMETER); } if (!info->node) { /* * Get the actual namespace node for the target object if we * need to. Handles these cases: * * 1) Null node, valid pathname from root (absolute path) * 2) Node and valid pathname (path relative to Node) * 3) Node, Null pathname */ status = acpi_ns_get_node(info->prefix_node, info->relative_pathname, ACPI_NS_NO_UPSEARCH, &info->node); if (ACPI_FAILURE(status)) { return_ACPI_STATUS(status); } } /* * For a method alias, we must grab the actual method node so that * proper scoping context will be established before execution. */ if (acpi_ns_get_type(info->node) == ACPI_TYPE_LOCAL_METHOD_ALIAS) { info->node = ACPI_CAST_PTR(struct acpi_namespace_node, info->node->object); } /* Complete the info block initialization */ info->return_object = NULL; info->node_flags = info->node->flags; info->obj_desc = acpi_ns_get_attached_object(info->node); ACPI_DEBUG_PRINT((ACPI_DB_NAMES, "%s [%p] Value %p\n", info->relative_pathname, info->node,