[mirror_ubuntu-hirsute-kernel.git] / drivers / acpi / acpica / nspredef.c

// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/******************************************************************************
 *
 * Module Name: nspredef - Validation of ACPI predefined methods and objects
 *
 * Copyright (C) 2000 - 2018, Intel Corp.
 *
 *****************************************************************************/

#define ACPI_CREATE_PREDEFINED_TABLE

#include <acpi/acpi.h>
#include "accommon.h"
#include "acnamesp.h"
#include "acpredef.h"

#define _COMPONENT          ACPI_NAMESPACE
ACPI_MODULE_NAME("nspredef")

/*******************************************************************************
 *
 * This module validates predefined ACPI objects that appear in the namespace,
 * at the time they are evaluated (via acpi_evaluate_object). The purpose of this
 * validation is to detect problems with BIOS-exposed predefined ACPI objects
 * before the results are returned to the ACPI-related drivers.
 *
 * There are several areas that are validated:
 *
 *  1) The number of input arguments as defined by the method/object in the
 *     ASL is validated against the ACPI specification.
 *  2) The type of the return object (if any) is validated against the ACPI
 *     specification.
 *  3) For returned package objects, the count of package elements is
 *     validated, as well as the type of each package element. Nested
 *     packages are supported.
 *
 * For any problems found, a warning message is issued.
 *
 ******************************************************************************/
/* Local prototypes */
static acpi_status
acpi_ns_check_reference(struct acpi_evaluate_info *info,
			union acpi_operand_object *return_object);

static u32 acpi_ns_get_bitmapped_type(union acpi_operand_object *return_object);

/*******************************************************************************
 *
 * FUNCTION:    acpi_ns_check_return_value
 *
 * PARAMETERS:  node            - Namespace node for the method/object
 *              info            - Method execution information block
 *              user_param_count - Number of parameters actually passed
 *              return_status   - Status from the object evaluation
 *              return_object_ptr - Pointer to the object returned from the
 *                                evaluation of a method or object
 *
 * RETURN:      Status
 *
 * DESCRIPTION: Check the value returned from a predefined name.
 *
 ******************************************************************************/

acpi_status
acpi_ns_check_return_value(struct acpi_namespace_node *node,
			   struct acpi_evaluate_info *info,
			   u32 user_param_count,
			   acpi_status return_status,
			   union acpi_operand_object **return_object_ptr)
{
	acpi_status status;
	const union acpi_predefined_info *predefined;

	/* If not a predefined name, we cannot validate the return object */

	predefined = info->predefined;
	if (!predefined) {
		return (AE_OK);
	}

	/*
	 * If the method failed or did not actually return an object, we cannot
	 * validate the return object
	 */
	if ((return_status != AE_OK) && (return_status != AE_CTRL_RETURN_VALUE)) {
		return (AE_OK);
	}

	/*
	 * Return value validation and possible repair.
	 *
	 * 1) Don't perform return value validation/repair if this feature
	 * has been disabled via a global option.
	 *
	 * 2) We have a return value, but if one wasn't expected, just exit,
	 * this is not a problem. For example, if the "Implicit Return"
	 * feature is enabled, methods will always return a value.
	 *
	 * 3) If the return value can be of any type, then we cannot perform
	 * any validation, just exit.
	 */
	if (acpi_gbl_disable_auto_repair ||
	    (!predefined->info.expected_btypes) ||
	    (predefined->info.expected_btypes == ACPI_RTYPE_ALL)) {
		return (AE_OK);
	}

	/*
	 * Check that the type of the main return object is what is expected
	 * for this predefined name
	 */
	status = acpi_ns_check_object_type(info, return_object_ptr,
					   predefined->info.expected_btypes,
					   ACPI_NOT_PACKAGE_ELEMENT);
	if (ACPI_FAILURE(status)) {
		goto exit;
	}

	/*
	 *
	 * 4) If there is no return value and it is optional, just return
	 * AE_OK (_WAK).
	 */
	if (!(*return_object_ptr)) {
		goto exit;
	}

	/*
	 * For returned Package objects, check the type of all sub-objects.
	 * Note: Package may have been newly created by call above.
	 */
	if ((*return_object_ptr)->common.type == ACPI_TYPE_PACKAGE) {
		info->parent_package = *return_object_ptr;
		status = acpi_ns_check_package(info, return_object_ptr);
		if (ACPI_FAILURE(status)) {

			/* We might be able to fix some errors */

			if ((status != AE_AML_OPERAND_TYPE) &&
			    (status != AE_AML_OPERAND_VALUE)) {
				goto exit;
			}
		}
	}

	/*
	 * The return object was OK, or it was successfully repaired above.
	 * Now make some additional checks such as verifying that package
	 * objects are sorted correctly (if required) or buffer objects have
	 * the correct data width (bytes vs. dwords). These repairs are
	 * performed on a per-name basis, i.e., the code is specific to
	 * particular predefined names.
	 */
	status = acpi_ns_complex_repairs(info, node, status, return_object_ptr);

exit:
	/*
	 * If the object validation failed or if we successfully repaired one
	 * or more objects, mark the parent node to suppress further warning
	 * messages during the next evaluation of the same method/object.
	 */
	if (ACPI_FAILURE(status) || (info->return_flags & ACPI_OBJECT_REPAIRED)) {
		node->flags |= ANOBJ_EVALUATED;
	}

	return (status);
}

/*******************************************************************************
 *
 * FUNCTION:    acpi_ns_check_object_type
 *
 * PARAMETERS:  info            - Method execution information block
 *              return_object_ptr - Pointer to the object returned from the
 *                                evaluation of a method or object
 *              expected_btypes - Bitmap of expected return type(s)
 *              package_index   - Index of object within parent package (if
 *                                applicable - ACPI_NOT_PACKAGE_ELEMENT
 *                                otherwise)
 *
 * RETURN:      Status
 *
 * DESCRIPTION: Check the type of the return object against the expected object
 *              type(s). Use of Btype allows multiple expected object types.
 *
 ******************************************************************************/

acpi_status
acpi_ns_check_object_type(struct acpi_evaluate_info *info,
			  union acpi_operand_object **return_object_ptr,
			  u32 expected_btypes, u32 package_index)
{
	union acpi_operand_object *return_object = *return_object_ptr;
	acpi_status status = AE_OK;
	char type_buffer[96];	/* Room for 10 types */

	/* A Namespace node should not get here, but make sure */

	if (return_object &&
	    ACPI_GET_DESCRIPTOR_TYPE(return_object) == ACPI_DESC_TYPE_NAMED) {
		ACPI_WARN_PREDEFINED((AE_INFO, info->full_pathname,
				      info->node_flags,
				      "Invalid return type - Found a Namespace node [%4.4s] type %s",
				      return_object->node.name.ascii,
				      acpi_ut_get_type_name(return_object->node.
							    type)));
		return (AE_AML_OPERAND_TYPE);
	}

	/*
	 * Convert the object type (ACPI_TYPE_xxx) to a bitmapped object type.
	 * The bitmapped type allows multiple possible return types.
	 *
	 * Note, the cases below must handle all of the possible types returned
	 * from all of the predefined names (including elements of returned
	 * packages)
	 */
	info->return_btype = acpi_ns_get_bitmapped_type(return_object);
	if (info->return_btype == ACPI_RTYPE_ANY) {

		/* Not one of the supported objects, must be incorrect */
		goto type_error_exit;
	}

	/* For reference objects, check that the reference type is correct */

	if ((info->return_btype & expected_btypes) == ACPI_RTYPE_REFERENCE) {
		status = acpi_ns_check_reference(info, return_object);
		return (status);
	}

	/* Attempt simple repair of the returned object if necessary */

	status = acpi_ns_simple_repair(info, expected_btypes,
				       package_index, return_object_ptr);
	if (ACPI_SUCCESS(status)) {
		return (AE_OK);	/* Successful repair */
	}

type_error_exit:

	/* Create a string with all expected types for this predefined object */

	acpi_ut_get_expected_return_types(type_buffer, expected_btypes);

	if (!return_object) {
		ACPI_WARN_PREDEFINED((AE_INFO, info->full_pathname,
				      info->node_flags,
				      "Expected return object of type %s",
				      type_buffer));
	} else if (package_index == ACPI_NOT_PACKAGE_ELEMENT) {
		ACPI_WARN_PREDEFINED((AE_INFO, info->full_pathname,
				      info->node_flags,
				      "Return type mismatch - found %s, expected %s",
				      acpi_ut_get_object_type_name
				      (return_object), type_buffer));
	} else {
		ACPI_WARN_PREDEFINED((AE_INFO, info->full_pathname,
				      info->node_flags,
				      "Return Package type mismatch at index %u - "
				      "found %s, expected %s", package_index,
				      acpi_ut_get_object_type_name
				      (return_object), type_buffer));
	}

	return (AE_AML_OPERAND_TYPE);
}

/*******************************************************************************
 *
 * FUNCTION:    acpi_ns_check_reference
 *
 * PARAMETERS:  info            - Method execution information block
 *              return_object   - Object returned from the evaluation of a
 *                                method or object
 *
 * RETURN:      Status
 *
 * DESCRIPTION: Check a returned reference object for the correct reference
 *              type. The only reference type that can be returned from a
 *              predefined method is a named reference. All others are invalid.
 *
 ******************************************************************************/

static acpi_status
acpi_ns_check_reference(struct acpi_evaluate_info *info,
			union acpi_operand_object *return_object)
{

	/*
	 * Check the reference object for the correct reference type (opcode).
	 * The only type of reference that can be converted to a union acpi_object is
	 * a reference to a named object (reference class: NAME)
	 */
	if (return_object->reference.class == ACPI_REFCLASS_NAME) {
		return (AE_OK);
	}

	ACPI_WARN_PREDEFINED((AE_INFO, info->full_pathname, info->node_flags,
			      "Return type mismatch - unexpected reference object type [%s] %2.2X",
			      acpi_ut_get_reference_name(return_object),
			      return_object->reference.class));

	return (AE_AML_OPERAND_TYPE);
}

/*******************************************************************************
 *
 * FUNCTION:    acpi_ns_get_bitmapped_type
 *
 * PARAMETERS:  return_object   - Object returned from method/obj evaluation
 *
 * RETURN:      Object return type. ACPI_RTYPE_ANY indicates that the object
 *              type is not supported. ACPI_RTYPE_NONE indicates that no
 *              object was returned (return_object is NULL).
 *
 * DESCRIPTION: Convert object type into a bitmapped object return type.
 *
 ******************************************************************************/

static u32 acpi_ns_get_bitmapped_type(union acpi_operand_object *return_object)
{
	u32 return_btype;

	if (!return_object) {
		return (ACPI_RTYPE_NONE);
	}

	/* Map acpi_object_type to internal bitmapped type */

	switch (return_object->common.type) {
	case ACPI_TYPE_INTEGER:

		return_btype = ACPI_RTYPE_INTEGER;
		break;

	case ACPI_TYPE_BUFFER:

		return_btype = ACPI_RTYPE_BUFFER;
		break;

	case ACPI_TYPE_STRING:

		return_btype = ACPI_RTYPE_STRING;
		break;

	case ACPI_TYPE_PACKAGE:

		return_btype = ACPI_RTYPE_PACKAGE;
		break;

	case ACPI_TYPE_LOCAL_REFERENCE:

		return_btype = ACPI_RTYPE_REFERENCE;
		break;

	default:

		/* Not one of the supported objects, must be incorrect */

		return_btype = ACPI_RTYPE_ANY;
		break;
	}

	return (return_btype);
}
Commit	Line	Data
95857638	1	// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
e8707b34 BM	2	/******************************************************************************
	3	*
	4	* Module Name: nspredef - Validation of ACPI predefined methods and objects
e8707b34	5	*
da6f8320	6	* Copyright (C) 2000 - 2018, Intel Corp.
e8707b34	7	*
95857638	8	*****************************************************************************/
e8707b34	9
999e08f9 BM	10	#define ACPI_CREATE_PREDEFINED_TABLE
999e08f9 BM	11
e8707b34	12	#include <acpi/acpi.h>
e2f7a777 LB	13	#include "accommon.h"
	14	#include "acnamesp.h"
	15	#include "acpredef.h"
e8707b34 BM	16
	17	#define _COMPONENT ACPI_NAMESPACE
	18	ACPI_MODULE_NAME("nspredef")
	19
	20	/*******************************************************************************
	21	*
	22	* This module validates predefined ACPI objects that appear in the namespace,
	23	* at the time they are evaluated (via acpi_evaluate_object). The purpose of this
	24	* validation is to detect problems with BIOS-exposed predefined ACPI objects
	25	* before the results are returned to the ACPI-related drivers.
	26	*
	27	* There are several areas that are validated:
	28	*
	29	* 1) The number of input arguments as defined by the method/object in the
29a241cc	30	* ASL is validated against the ACPI specification.
e8707b34	31	* 2) The type of the return object (if any) is validated against the ACPI
29a241cc	32	* specification.
e8707b34	33	* 3) For returned package objects, the count of package elements is
29a241cc BM	34	* validated, as well as the type of each package element. Nested
29a241cc BM	35	* packages are supported.
e8707b34 BM	36	*
	37	* For any problems found, a warning message is issued.
	38	*
	39	******************************************************************************/
	40	/* Local prototypes */
e8707b34	41	static acpi_status
29a241cc	42	acpi_ns_check_reference(struct acpi_evaluate_info *info,
e8707b34 BM	43	union acpi_operand_object *return_object);
e8707b34 BM	44
d5a36100 BM	45	static u32 acpi_ns_get_bitmapped_type(union acpi_operand_object *return_object);
d5a36100 BM	46
e8707b34 BM	47	/*******************************************************************************
e8707b34 BM	48	*
29a241cc	49	* FUNCTION: acpi_ns_check_return_value
e8707b34	50	*
ba494bee	51	* PARAMETERS: node - Namespace node for the method/object
29a241cc	52	* info - Method execution information block
0444e8f6 BM	53	* user_param_count - Number of parameters actually passed
0444e8f6 BM	54	* return_status - Status from the object evaluation
a647b5c3 BM	55	* return_object_ptr - Pointer to the object returned from the
a647b5c3 BM	56	* evaluation of a method or object
e8707b34 BM	57	*
	58	* RETURN: Status
	59	*
29a241cc	60	* DESCRIPTION: Check the value returned from a predefined name.
e8707b34 BM	61	*
	62	******************************************************************************/
	63
	64	acpi_status
29a241cc BM	65	acpi_ns_check_return_value(struct acpi_namespace_node *node,
	66	struct acpi_evaluate_info *info,
	67	u32 user_param_count,
	68	acpi_status return_status,
	69	union acpi_operand_object **return_object_ptr)
e8707b34	70	{
29a241cc	71	acpi_status status;
e8707b34	72	const union acpi_predefined_info *predefined;
eeb4437e BM	73
	74	/* If not a predefined name, we cannot validate the return object */
	75
43e5318f	76	predefined = info->predefined;
eeb4437e	77	if (!predefined) {
29a241cc	78	return (AE_OK);
eeb4437e BM	79	}
	80
	81	/*
0444e8f6 BM	82	* If the method failed or did not actually return an object, we cannot
0444e8f6 BM	83	* validate the return object
e8707b34	84	*/
0444e8f6	85	if ((return_status != AE_OK) && (return_status != AE_CTRL_RETURN_VALUE)) {
29a241cc	86	return (AE_OK);
eeb4437e BM	87	}
eeb4437e BM	88
e8707b34	89	/*
d57b23ad	90	* Return value validation and possible repair.
307a0424	91	*
d57b23ad BM	92	* 1) Don't perform return value validation/repair if this feature
	93	* has been disabled via a global option.
	94	*
	95	* 2) We have a return value, but if one wasn't expected, just exit,
	96	* this is not a problem. For example, if the "Implicit Return"
	97	* feature is enabled, methods will always return a value.
	98	*
	99	* 3) If the return value can be of any type, then we cannot perform
	100	* any validation, just exit.
e8707b34	101	*/
d57b23ad BM	102	if (acpi_gbl_disable_auto_repair \|\|
d57b23ad BM	103	(!predefined->info.expected_btypes) \|\|
307a0424	104	(predefined->info.expected_btypes == ACPI_RTYPE_ALL)) {
29a241cc	105	return (AE_OK);
e8707b34 BM	106	}
	107
	108	/*
465da9eb BM	109	* Check that the type of the main return object is what is expected
465da9eb BM	110	* for this predefined name
e8707b34	111	*/
29a241cc	112	status = acpi_ns_check_object_type(info, return_object_ptr,
e8707b34	113	predefined->info.expected_btypes,
0444e8f6	114	ACPI_NOT_PACKAGE_ELEMENT);
465da9eb BM	115	if (ACPI_FAILURE(status)) {
	116	goto exit;
	117	}
	118
bf0dd264 BM	119	/*
	120	*
	121	* 4) If there is no return value and it is optional, just return
	122	* AE_OK (_WAK).
	123	*/
	124	if (!(*return_object_ptr)) {
	125	goto exit;
	126	}
	127
465da9eb BM	128	/*
	129	* For returned Package objects, check the type of all sub-objects.
	130	* Note: Package may have been newly created by call above.
	131	*/
	132	if ((*return_object_ptr)->common.type == ACPI_TYPE_PACKAGE) {
29a241cc BM	133	info->parent_package = *return_object_ptr;
29a241cc BM	134	status = acpi_ns_check_package(info, return_object_ptr);
465da9eb	135	if (ACPI_FAILURE(status)) {
aa6329c4	136
5a9792f3	137	/* We might be able to fix some errors */
aa6329c4	138
5a9792f3 LZ	139	if ((status != AE_AML_OPERAND_TYPE) &&
5a9792f3 LZ	140	(status != AE_AML_OPERAND_VALUE)) {
aa6329c4 LZ	141	goto exit;
aa6329c4 LZ	142	}
34c39c75	143	}
e8707b34 BM	144	}
e8707b34 BM	145
ad5babee	146	/*
465da9eb BM	147	* The return object was OK, or it was successfully repaired above.
	148	* Now make some additional checks such as verifying that package
	149	* objects are sorted correctly (if required) or buffer objects have
	150	* the correct data width (bytes vs. dwords). These repairs are
	151	* performed on a per-name basis, i.e., the code is specific to
	152	* particular predefined names.
ad5babee	153	*/
29a241cc	154	status = acpi_ns_complex_repairs(info, node, status, return_object_ptr);
ad5babee	155
465da9eb	156	exit:
0444e8f6 BM	157	/*
	158	* If the object validation failed or if we successfully repaired one
	159	* or more objects, mark the parent node to suppress further warning
	160	* messages during the next evaluation of the same method/object.
	161	*/
29a241cc	162	if (ACPI_FAILURE(status) \|\| (info->return_flags & ACPI_OBJECT_REPAIRED)) {
0444e8f6 BM	163	node->flags \|= ANOBJ_EVALUATED;
0444e8f6 BM	164	}
0444e8f6	165
e8707b34 BM	166	return (status);
	167	}
	168
e8707b34 BM	169	/*******************************************************************************
	170	*
	171	* FUNCTION: acpi_ns_check_object_type
	172	*
29a241cc	173	* PARAMETERS: info - Method execution information block
a647b5c3 BM	174	* return_object_ptr - Pointer to the object returned from the
a647b5c3 BM	175	* evaluation of a method or object
e8707b34 BM	176	* expected_btypes - Bitmap of expected return type(s)
e8707b34 BM	177	* package_index - Index of object within parent package (if
0444e8f6 BM	178	* applicable - ACPI_NOT_PACKAGE_ELEMENT
0444e8f6 BM	179	* otherwise)
e8707b34 BM	180	*
	181	* RETURN: Status
	182	*
	183	* DESCRIPTION: Check the type of the return object against the expected object
	184	* type(s). Use of Btype allows multiple expected object types.
	185	*
	186	******************************************************************************/
	187
42f8fb75	188	acpi_status
29a241cc	189	acpi_ns_check_object_type(struct acpi_evaluate_info *info,
a647b5c3	190	union acpi_operand_object **return_object_ptr,
e8707b34 BM	191	u32 expected_btypes, u32 package_index)
e8707b34 BM	192	{
a647b5c3	193	union acpi_operand_object return_object = return_object_ptr;
e8707b34	194	acpi_status status = AE_OK;
a5922a1f	195	char type_buffer[96]; /* Room for 10 types */
e8707b34	196
e8707b34 BM	197	/* A Namespace node should not get here, but make sure */
e8707b34 BM	198
d5a36100 BM	199	if (return_object &&
d5a36100 BM	200	ACPI_GET_DESCRIPTOR_TYPE(return_object) == ACPI_DESC_TYPE_NAMED) {
29a241cc BM	201	ACPI_WARN_PREDEFINED((AE_INFO, info->full_pathname,
29a241cc BM	202	info->node_flags,
0444e8f6 BM	203	"Invalid return type - Found a Namespace node [%4.4s] type %s",
	204	return_object->node.name.ascii,
	205	acpi_ut_get_type_name(return_object->node.
	206	type)));
e8707b34 BM	207	return (AE_AML_OPERAND_TYPE);
	208	}
	209
	210	/*
	211	* Convert the object type (ACPI_TYPE_xxx) to a bitmapped object type.
	212	* The bitmapped type allows multiple possible return types.
	213	*
	214	* Note, the cases below must handle all of the possible types returned
	215	* from all of the predefined names (including elements of returned
	216	* packages)
	217	*/
29a241cc BM	218	info->return_btype = acpi_ns_get_bitmapped_type(return_object);
29a241cc BM	219	if (info->return_btype == ACPI_RTYPE_ANY) {
e8707b34	220
e8707b34	221	/* Not one of the supported objects, must be incorrect */
e8707b34 BM	222	goto type_error_exit;
	223	}
	224
d5a36100	225	/* For reference objects, check that the reference type is correct */
2147d3f0	226
29a241cc BM	227	if ((info->return_btype & expected_btypes) == ACPI_RTYPE_REFERENCE) {
29a241cc BM	228	status = acpi_ns_check_reference(info, return_object);
2147d3f0	229	return (status);
e8707b34 BM	230	}
e8707b34 BM	231
d5a36100	232	/* Attempt simple repair of the returned object if necessary */
e8707b34	233
29a241cc	234	status = acpi_ns_simple_repair(info, expected_btypes,
2147d3f0	235	package_index, return_object_ptr);
29a241cc BM	236	if (ACPI_SUCCESS(status)) {
	237	return (AE_OK); /* Successful repair */
	238	}
e8707b34	239
10622bf8	240	type_error_exit:
e8707b34 BM	241
	242	/* Create a string with all expected types for this predefined object */
	243
c34c82bc	244	acpi_ut_get_expected_return_types(type_buffer, expected_btypes);
e8707b34	245
bf0dd264 BM	246	if (!return_object) {
	247	ACPI_WARN_PREDEFINED((AE_INFO, info->full_pathname,
	248	info->node_flags,
	249	"Expected return object of type %s",
	250	type_buffer));
	251	} else if (package_index == ACPI_NOT_PACKAGE_ELEMENT) {
29a241cc BM	252	ACPI_WARN_PREDEFINED((AE_INFO, info->full_pathname,
29a241cc BM	253	info->node_flags,
0444e8f6 BM	254	"Return type mismatch - found %s, expected %s",
	255	acpi_ut_get_object_type_name
	256	(return_object), type_buffer));
e8707b34	257	} else {
29a241cc BM	258	ACPI_WARN_PREDEFINED((AE_INFO, info->full_pathname,
29a241cc BM	259	info->node_flags,
0444e8f6 BM	260	"Return Package type mismatch at index %u - "
	261	"found %s, expected %s", package_index,
	262	acpi_ut_get_object_type_name
	263	(return_object), type_buffer));
e8707b34 BM	264	}
	265
	266	return (AE_AML_OPERAND_TYPE);
	267	}
	268
	269	/*******************************************************************************
	270	*
	271	* FUNCTION: acpi_ns_check_reference
	272	*
29a241cc	273	* PARAMETERS: info - Method execution information block
e8707b34 BM	274	* return_object - Object returned from the evaluation of a
	275	* method or object
	276	*
	277	* RETURN: Status
	278	*
	279	* DESCRIPTION: Check a returned reference object for the correct reference
	280	* type. The only reference type that can be returned from a
	281	* predefined method is a named reference. All others are invalid.
	282	*
	283	******************************************************************************/
	284
	285	static acpi_status
29a241cc	286	acpi_ns_check_reference(struct acpi_evaluate_info *info,
e8707b34 BM	287	union acpi_operand_object *return_object)
	288	{
	289
	290	/*
	291	* Check the reference object for the correct reference type (opcode).
03440c4e	292	* The only type of reference that can be converted to a union acpi_object is
e8707b34 BM	293	* a reference to a named object (reference class: NAME)
	294	*/
	295	if (return_object->reference.class == ACPI_REFCLASS_NAME) {
	296	return (AE_OK);
	297	}
	298
29a241cc	299	ACPI_WARN_PREDEFINED((AE_INFO, info->full_pathname, info->node_flags,
0444e8f6 BM	300	"Return type mismatch - unexpected reference object type [%s] %2.2X",
	301	acpi_ut_get_reference_name(return_object),
	302	return_object->reference.class));
e8707b34 BM	303
	304	return (AE_AML_OPERAND_TYPE);
	305	}
a647b5c3	306
d5a36100 BM	307	/*******************************************************************************
	308	*
	309	* FUNCTION: acpi_ns_get_bitmapped_type
	310	*
	311	* PARAMETERS: return_object - Object returned from method/obj evaluation
	312	*
	313	* RETURN: Object return type. ACPI_RTYPE_ANY indicates that the object
	314	* type is not supported. ACPI_RTYPE_NONE indicates that no
	315	* object was returned (return_object is NULL).
	316	*
	317	* DESCRIPTION: Convert object type into a bitmapped object return type.
	318	*
	319	******************************************************************************/
	320
	321	static u32 acpi_ns_get_bitmapped_type(union acpi_operand_object *return_object)
	322	{
	323	u32 return_btype;
	324
	325	if (!return_object) {
	326	return (ACPI_RTYPE_NONE);
	327	}
	328
	329	/* Map acpi_object_type to internal bitmapped type */
	330
	331	switch (return_object->common.type) {
	332	case ACPI_TYPE_INTEGER:
1d1ea1b7	333
d5a36100 BM	334	return_btype = ACPI_RTYPE_INTEGER;
	335	break;
	336
	337	case ACPI_TYPE_BUFFER:
1d1ea1b7	338
d5a36100 BM	339	return_btype = ACPI_RTYPE_BUFFER;
	340	break;
	341
	342	case ACPI_TYPE_STRING:
1d1ea1b7	343
d5a36100 BM	344	return_btype = ACPI_RTYPE_STRING;
	345	break;
	346
	347	case ACPI_TYPE_PACKAGE:
1d1ea1b7	348
d5a36100 BM	349	return_btype = ACPI_RTYPE_PACKAGE;
	350	break;
	351
	352	case ACPI_TYPE_LOCAL_REFERENCE:
1d1ea1b7	353
d5a36100 BM	354	return_btype = ACPI_RTYPE_REFERENCE;
	355	break;
	356
	357	default:
1d1ea1b7	358
d5a36100 BM	359	/* Not one of the supported objects, must be incorrect */
	360
	361	return_btype = ACPI_RTYPE_ANY;
	362	break;
	363	}
	364
	365	return (return_btype);
	366	}