[mirror_ubuntu-artful-kernel.git] / drivers / acpi / resources / rsutils.c

/*******************************************************************************
 *
 * Module Name: rsutils - Utilities for the resource manager
 *
 ******************************************************************************/

/*
 * Copyright (C) 2000 - 2005, R. Byron Moore
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions, and the following disclaimer,
 *    without modification.
 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
 *    substantially similar to the "NO WARRANTY" disclaimer below
 *    ("Disclaimer") and any redistribution must be conditioned upon
 *    including a substantially similar Disclaimer requirement for further
 *    binary redistribution.
 * 3. Neither the names of the above-listed copyright holders nor the names
 *    of any contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 * Alternatively, this software may be distributed under the terms of the
 * GNU General Public License ("GPL") version 2 as published by the Free
 * Software Foundation.
 *
 * NO WARRANTY
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGES.
 */

#include <acpi/acpi.h>
#include <acpi/acnamesp.h>
#include <acpi/acresrc.h>

#define _COMPONENT          ACPI_RESOURCES
ACPI_MODULE_NAME("rsutils")

/*******************************************************************************
 *
 * FUNCTION:    acpi_rs_get_prt_method_data
 *
 * PARAMETERS:  Handle          - a handle to the containing object
 *              ret_buffer      - a pointer to a buffer structure for the
 *                                  results
 *
 * RETURN:      Status
 *
 * DESCRIPTION: This function is called to get the _PRT value of an object
 *              contained in an object specified by the handle passed in
 *
 *              If the function fails an appropriate status will be returned
 *              and the contents of the callers buffer is undefined.
 *
 ******************************************************************************/
acpi_status
acpi_rs_get_prt_method_data(acpi_handle handle, struct acpi_buffer *ret_buffer)
{
	union acpi_operand_object *obj_desc;
	acpi_status status;

	ACPI_FUNCTION_TRACE("rs_get_prt_method_data");

	/* Parameters guaranteed valid by caller */

	/* Execute the method, no parameters */

	status = acpi_ut_evaluate_object(handle, METHOD_NAME__PRT,
					 ACPI_BTYPE_PACKAGE, &obj_desc);
	if (ACPI_FAILURE(status)) {
		return_ACPI_STATUS(status);
	}

	/*
	 * Create a resource linked list from the byte stream buffer that comes
	 * back from the _CRS method execution.
	 */
	status = acpi_rs_create_pci_routing_table(obj_desc, ret_buffer);

	/* On exit, we must delete the object returned by evaluate_object */

	acpi_ut_remove_reference(obj_desc);
	return_ACPI_STATUS(status);
}

/*******************************************************************************
 *
 * FUNCTION:    acpi_rs_get_crs_method_data
 *
 * PARAMETERS:  Handle          - a handle to the containing object
 *              ret_buffer      - a pointer to a buffer structure for the
 *                                  results
 *
 * RETURN:      Status
 *
 * DESCRIPTION: This function is called to get the _CRS value of an object
 *              contained in an object specified by the handle passed in
 *
 *              If the function fails an appropriate status will be returned
 *              and the contents of the callers buffer is undefined.
 *
 ******************************************************************************/

acpi_status
acpi_rs_get_crs_method_data(acpi_handle handle, struct acpi_buffer *ret_buffer)
{
	union acpi_operand_object *obj_desc;
	acpi_status status;

	ACPI_FUNCTION_TRACE("rs_get_crs_method_data");

	/* Parameters guaranteed valid by caller */

	/* Execute the method, no parameters */

	status = acpi_ut_evaluate_object(handle, METHOD_NAME__CRS,
					 ACPI_BTYPE_BUFFER, &obj_desc);
	if (ACPI_FAILURE(status)) {
		return_ACPI_STATUS(status);
	}

	/*
	 * Make the call to create a resource linked list from the
	 * byte stream buffer that comes back from the _CRS method
	 * execution.
	 */
	status = acpi_rs_create_resource_list(obj_desc, ret_buffer);

	/* on exit, we must delete the object returned by evaluate_object */

	acpi_ut_remove_reference(obj_desc);
	return_ACPI_STATUS(status);
}

/*******************************************************************************
 *
 * FUNCTION:    acpi_rs_get_prs_method_data
 *
 * PARAMETERS:  Handle          - a handle to the containing object
 *              ret_buffer      - a pointer to a buffer structure for the
 *                                  results
 *
 * RETURN:      Status
 *
 * DESCRIPTION: This function is called to get the _PRS value of an object
 *              contained in an object specified by the handle passed in
 *
 *              If the function fails an appropriate status will be returned
 *              and the contents of the callers buffer is undefined.
 *
 ******************************************************************************/

#ifdef ACPI_FUTURE_USAGE
acpi_status
acpi_rs_get_prs_method_data(acpi_handle handle, struct acpi_buffer *ret_buffer)
{
	union acpi_operand_object *obj_desc;
	acpi_status status;

	ACPI_FUNCTION_TRACE("rs_get_prs_method_data");

	/* Parameters guaranteed valid by caller */

	/* Execute the method, no parameters */

	status = acpi_ut_evaluate_object(handle, METHOD_NAME__PRS,
					 ACPI_BTYPE_BUFFER, &obj_desc);
	if (ACPI_FAILURE(status)) {
		return_ACPI_STATUS(status);
	}

	/*
	 * Make the call to create a resource linked list from the
	 * byte stream buffer that comes back from the _CRS method
	 * execution.
	 */
	status = acpi_rs_create_resource_list(obj_desc, ret_buffer);

	/* on exit, we must delete the object returned by evaluate_object */

	acpi_ut_remove_reference(obj_desc);
	return_ACPI_STATUS(status);
}
#endif				/*  ACPI_FUTURE_USAGE  */

/*******************************************************************************
 *
 * FUNCTION:    acpi_rs_get_method_data
 *
 * PARAMETERS:  Handle          - a handle to the containing object
 *              Path            - Path to method, relative to Handle
 *              ret_buffer      - a pointer to a buffer structure for the
 *                                  results
 *
 * RETURN:      Status
 *
 * DESCRIPTION: This function is called to get the _CRS or _PRS value of an
 *              object contained in an object specified by the handle passed in
 *
 *              If the function fails an appropriate status will be returned
 *              and the contents of the callers buffer is undefined.
 *
 ******************************************************************************/

acpi_status
acpi_rs_get_method_data(acpi_handle handle,
			char *path, struct acpi_buffer *ret_buffer)
{
	union acpi_operand_object *obj_desc;
	acpi_status status;

	ACPI_FUNCTION_TRACE("rs_get_method_data");

	/* Parameters guaranteed valid by caller */

	/* Execute the method, no parameters */

	status =
	    acpi_ut_evaluate_object(handle, path, ACPI_BTYPE_BUFFER, &obj_desc);
	if (ACPI_FAILURE(status)) {
		return_ACPI_STATUS(status);
	}

	/*
	 * Make the call to create a resource linked list from the
	 * byte stream buffer that comes back from the method
	 * execution.
	 */
	status = acpi_rs_create_resource_list(obj_desc, ret_buffer);

	/* On exit, we must delete the object returned by evaluate_object */

	acpi_ut_remove_reference(obj_desc);
	return_ACPI_STATUS(status);
}

/*******************************************************************************
 *
 * FUNCTION:    acpi_rs_set_srs_method_data
 *
 * PARAMETERS:  Handle          - a handle to the containing object
 *              in_buffer       - a pointer to a buffer structure of the
 *                                  parameter
 *
 * RETURN:      Status
 *
 * DESCRIPTION: This function is called to set the _SRS of an object contained
 *              in an object specified by the handle passed in
 *
 *              If the function fails an appropriate status will be returned
 *              and the contents of the callers buffer is undefined.
 *
 ******************************************************************************/

acpi_status
acpi_rs_set_srs_method_data(acpi_handle handle, struct acpi_buffer *in_buffer)
{
	struct acpi_parameter_info info;
	union acpi_operand_object *params[2];
	acpi_status status;
	struct acpi_buffer buffer;

	ACPI_FUNCTION_TRACE("rs_set_srs_method_data");

	/* Parameters guaranteed valid by caller */

	/*
	 * The in_buffer parameter will point to a linked list of
	 * resource parameters.  It needs to be formatted into a
	 * byte stream to be sent in as an input parameter to _SRS
	 *
	 * Convert the linked list into a byte stream
	 */
	buffer.length = ACPI_ALLOCATE_LOCAL_BUFFER;
	status = acpi_rs_create_byte_stream(in_buffer->pointer, &buffer);
	if (ACPI_FAILURE(status)) {
		return_ACPI_STATUS(status);
	}

	/* Init the param object */

	params[0] = acpi_ut_create_internal_object(ACPI_TYPE_BUFFER);
	if (!params[0]) {
		acpi_os_free(buffer.pointer);
		return_ACPI_STATUS(AE_NO_MEMORY);
	}

	/* Set up the parameter object */

	params[0]->buffer.length = (u32) buffer.length;
	params[0]->buffer.pointer = buffer.pointer;
	params[0]->common.flags = AOPOBJ_DATA_VALID;
	params[1] = NULL;

	info.node = handle;
	info.parameters = params;
	info.parameter_type = ACPI_PARAM_ARGS;

	/* Execute the method, no return value */

	status = acpi_ns_evaluate_relative(METHOD_NAME__SRS, &info);
	if (ACPI_SUCCESS(status)) {
		/* Delete any return object (especially if implicit_return is enabled) */

		if (info.return_object) {
			acpi_ut_remove_reference(info.return_object);
		}
	}

	/* Clean up and return the status from acpi_ns_evaluate_relative */

	acpi_ut_remove_reference(params[0]);
	return_ACPI_STATUS(status);
}
Commit	Line	Data
1da177e4 LT	1	/*******************************************************************************
	2	*
	3	* Module Name: rsutils - Utilities for the resource manager
	4	*
	5	******************************************************************************/
	6
	7	/*
	8	* Copyright (C) 2000 - 2005, R. Byron Moore
	9	* All rights reserved.
	10	*
	11	* Redistribution and use in source and binary forms, with or without
	12	* modification, are permitted provided that the following conditions
	13	* are met:
	14	* 1. Redistributions of source code must retain the above copyright
	15	* notice, this list of conditions, and the following disclaimer,
	16	* without modification.
	17	* 2. Redistributions in binary form must reproduce at minimum a disclaimer
	18	* substantially similar to the "NO WARRANTY" disclaimer below
	19	* ("Disclaimer") and any redistribution must be conditioned upon
	20	* including a substantially similar Disclaimer requirement for further
	21	* binary redistribution.
	22	* 3. Neither the names of the above-listed copyright holders nor the names
	23	* of any contributors may be used to endorse or promote products derived
	24	* from this software without specific prior written permission.
	25	*
	26	* Alternatively, this software may be distributed under the terms of the
	27	* GNU General Public License ("GPL") version 2 as published by the Free
	28	* Software Foundation.
	29	*
	30	* NO WARRANTY
	31	* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
	32	* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
	33	* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
	34	* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
	35	* HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	36	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	37	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	38	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
	39	* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
	40	* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
	41	* POSSIBILITY OF SUCH DAMAGES.
	42	*/
	43
1da177e4 LT	44	#include <acpi/acpi.h>
	45	#include <acpi/acnamesp.h>
	46	#include <acpi/acresrc.h>
	47
1da177e4	48	#define _COMPONENT ACPI_RESOURCES
4be44fcd	49	ACPI_MODULE_NAME("rsutils")
1da177e4 LT	50
	51	/*******************************************************************************
	52	*
	53	* FUNCTION: acpi_rs_get_prt_method_data
	54	*
	55	* PARAMETERS: Handle - a handle to the containing object
	56	* ret_buffer - a pointer to a buffer structure for the
	57	* results
	58	*
	59	* RETURN: Status
	60	*
	61	* DESCRIPTION: This function is called to get the _PRT value of an object
	62	* contained in an object specified by the handle passed in
	63	*
	64	* If the function fails an appropriate status will be returned
	65	* and the contents of the callers buffer is undefined.
	66	*
	67	******************************************************************************/
1da177e4	68	acpi_status
4be44fcd	69	acpi_rs_get_prt_method_data(acpi_handle handle, struct acpi_buffer *ret_buffer)
1da177e4	70	{
4be44fcd LB	71	union acpi_operand_object *obj_desc;
4be44fcd LB	72	acpi_status status;
1da177e4	73
4be44fcd	74	ACPI_FUNCTION_TRACE("rs_get_prt_method_data");
1da177e4 LT	75
	76	/* Parameters guaranteed valid by caller */
	77
44f6c012 RM	78	/* Execute the method, no parameters */
44f6c012 RM	79
4be44fcd LB	80	status = acpi_ut_evaluate_object(handle, METHOD_NAME__PRT,
	81	ACPI_BTYPE_PACKAGE, &obj_desc);
	82	if (ACPI_FAILURE(status)) {
	83	return_ACPI_STATUS(status);
1da177e4 LT	84	}
	85
	86	/*
	87	* Create a resource linked list from the byte stream buffer that comes
	88	* back from the _CRS method execution.
	89	*/
4be44fcd	90	status = acpi_rs_create_pci_routing_table(obj_desc, ret_buffer);
1da177e4 LT	91
	92	/* On exit, we must delete the object returned by evaluate_object */
	93
4be44fcd LB	94	acpi_ut_remove_reference(obj_desc);
4be44fcd LB	95	return_ACPI_STATUS(status);
1da177e4 LT	96	}
1da177e4 LT	97
1da177e4 LT	98	/*******************************************************************************
	99	*
	100	* FUNCTION: acpi_rs_get_crs_method_data
	101	*
	102	* PARAMETERS: Handle - a handle to the containing object
	103	* ret_buffer - a pointer to a buffer structure for the
	104	* results
	105	*
	106	* RETURN: Status
	107	*
	108	* DESCRIPTION: This function is called to get the _CRS value of an object
	109	* contained in an object specified by the handle passed in
	110	*
	111	* If the function fails an appropriate status will be returned
	112	* and the contents of the callers buffer is undefined.
	113	*
	114	******************************************************************************/
	115
	116	acpi_status
4be44fcd	117	acpi_rs_get_crs_method_data(acpi_handle handle, struct acpi_buffer *ret_buffer)
1da177e4	118	{
4be44fcd LB	119	union acpi_operand_object *obj_desc;
4be44fcd LB	120	acpi_status status;
1da177e4	121
4be44fcd	122	ACPI_FUNCTION_TRACE("rs_get_crs_method_data");
1da177e4 LT	123
	124	/* Parameters guaranteed valid by caller */
	125
44f6c012 RM	126	/* Execute the method, no parameters */
44f6c012 RM	127
4be44fcd LB	128	status = acpi_ut_evaluate_object(handle, METHOD_NAME__CRS,
	129	ACPI_BTYPE_BUFFER, &obj_desc);
	130	if (ACPI_FAILURE(status)) {
	131	return_ACPI_STATUS(status);
1da177e4 LT	132	}
	133
	134	/*
	135	* Make the call to create a resource linked list from the
	136	* byte stream buffer that comes back from the _CRS method
	137	* execution.
	138	*/
4be44fcd	139	status = acpi_rs_create_resource_list(obj_desc, ret_buffer);
1da177e4 LT	140
	141	/* on exit, we must delete the object returned by evaluate_object */
	142
4be44fcd LB	143	acpi_ut_remove_reference(obj_desc);
4be44fcd LB	144	return_ACPI_STATUS(status);
1da177e4 LT	145	}
1da177e4 LT	146
1da177e4 LT	147	/*******************************************************************************
	148	*
	149	* FUNCTION: acpi_rs_get_prs_method_data
	150	*
	151	* PARAMETERS: Handle - a handle to the containing object
	152	* ret_buffer - a pointer to a buffer structure for the
	153	* results
	154	*
	155	* RETURN: Status
	156	*
	157	* DESCRIPTION: This function is called to get the _PRS value of an object
	158	* contained in an object specified by the handle passed in
	159	*
	160	* If the function fails an appropriate status will be returned
	161	* and the contents of the callers buffer is undefined.
	162	*
	163	******************************************************************************/
44f6c012	164
1da177e4 LT	165	#ifdef ACPI_FUTURE_USAGE
1da177e4 LT	166	acpi_status
4be44fcd	167	acpi_rs_get_prs_method_data(acpi_handle handle, struct acpi_buffer *ret_buffer)
1da177e4	168	{
4be44fcd LB	169	union acpi_operand_object *obj_desc;
4be44fcd LB	170	acpi_status status;
1da177e4	171
4be44fcd	172	ACPI_FUNCTION_TRACE("rs_get_prs_method_data");
1da177e4 LT	173
	174	/* Parameters guaranteed valid by caller */
	175
44f6c012 RM	176	/* Execute the method, no parameters */
44f6c012 RM	177
4be44fcd LB	178	status = acpi_ut_evaluate_object(handle, METHOD_NAME__PRS,
	179	ACPI_BTYPE_BUFFER, &obj_desc);
	180	if (ACPI_FAILURE(status)) {
	181	return_ACPI_STATUS(status);
1da177e4 LT	182	}
	183
	184	/*
	185	* Make the call to create a resource linked list from the
	186	* byte stream buffer that comes back from the _CRS method
	187	* execution.
	188	*/
4be44fcd	189	status = acpi_rs_create_resource_list(obj_desc, ret_buffer);
1da177e4 LT	190
	191	/* on exit, we must delete the object returned by evaluate_object */
	192
4be44fcd LB	193	acpi_ut_remove_reference(obj_desc);
4be44fcd LB	194	return_ACPI_STATUS(status);
1da177e4	195	}
4be44fcd	196	#endif /* ACPI_FUTURE_USAGE */
1da177e4 LT	197
	198	/*******************************************************************************
	199	*
	200	* FUNCTION: acpi_rs_get_method_data
	201	*
	202	* PARAMETERS: Handle - a handle to the containing object
44f6c012	203	* Path - Path to method, relative to Handle
1da177e4 LT	204	* ret_buffer - a pointer to a buffer structure for the
	205	* results
	206	*
	207	* RETURN: Status
	208	*
	209	* DESCRIPTION: This function is called to get the _CRS or _PRS value of an
	210	* object contained in an object specified by the handle passed in
	211	*
	212	* If the function fails an appropriate status will be returned
	213	* and the contents of the callers buffer is undefined.
	214	*
	215	******************************************************************************/
	216
	217	acpi_status
4be44fcd LB	218	acpi_rs_get_method_data(acpi_handle handle,
4be44fcd LB	219	char path, struct acpi_buffer ret_buffer)
1da177e4	220	{
4be44fcd LB	221	union acpi_operand_object *obj_desc;
4be44fcd LB	222	acpi_status status;
1da177e4	223
4be44fcd	224	ACPI_FUNCTION_TRACE("rs_get_method_data");
1da177e4 LT	225
	226	/* Parameters guaranteed valid by caller */
	227
44f6c012 RM	228	/* Execute the method, no parameters */
44f6c012 RM	229
4be44fcd LB	230	status =
	231	acpi_ut_evaluate_object(handle, path, ACPI_BTYPE_BUFFER, &obj_desc);
	232	if (ACPI_FAILURE(status)) {
	233	return_ACPI_STATUS(status);
1da177e4 LT	234	}
	235
	236	/*
	237	* Make the call to create a resource linked list from the
	238	* byte stream buffer that comes back from the method
	239	* execution.
	240	*/
4be44fcd	241	status = acpi_rs_create_resource_list(obj_desc, ret_buffer);
1da177e4 LT	242
	243	/* On exit, we must delete the object returned by evaluate_object */
	244
4be44fcd LB	245	acpi_ut_remove_reference(obj_desc);
4be44fcd LB	246	return_ACPI_STATUS(status);
1da177e4 LT	247	}
	248
	249	/*******************************************************************************
	250	*
	251	* FUNCTION: acpi_rs_set_srs_method_data
	252	*
	253	* PARAMETERS: Handle - a handle to the containing object
	254	* in_buffer - a pointer to a buffer structure of the
	255	* parameter
	256	*
	257	* RETURN: Status
	258	*
	259	* DESCRIPTION: This function is called to set the _SRS of an object contained
	260	* in an object specified by the handle passed in
	261	*
	262	* If the function fails an appropriate status will be returned
	263	* and the contents of the callers buffer is undefined.
	264	*
	265	******************************************************************************/
	266
	267	acpi_status
4be44fcd	268	acpi_rs_set_srs_method_data(acpi_handle handle, struct acpi_buffer *in_buffer)
1da177e4	269	{
4be44fcd LB	270	struct acpi_parameter_info info;
	271	union acpi_operand_object *params[2];
	272	acpi_status status;
	273	struct acpi_buffer buffer;
1da177e4	274
4be44fcd	275	ACPI_FUNCTION_TRACE("rs_set_srs_method_data");
1da177e4 LT	276
	277	/* Parameters guaranteed valid by caller */
	278
	279	/*
	280	* The in_buffer parameter will point to a linked list of
	281	* resource parameters. It needs to be formatted into a
	282	* byte stream to be sent in as an input parameter to _SRS
	283	*
	284	* Convert the linked list into a byte stream
	285	*/
	286	buffer.length = ACPI_ALLOCATE_LOCAL_BUFFER;
4be44fcd LB	287	status = acpi_rs_create_byte_stream(in_buffer->pointer, &buffer);
	288	if (ACPI_FAILURE(status)) {
	289	return_ACPI_STATUS(status);
1da177e4 LT	290	}
1da177e4 LT	291
44f6c012 RM	292	/* Init the param object */
44f6c012 RM	293
4be44fcd	294	params[0] = acpi_ut_create_internal_object(ACPI_TYPE_BUFFER);
1da177e4	295	if (!params[0]) {
4be44fcd LB	296	acpi_os_free(buffer.pointer);
4be44fcd LB	297	return_ACPI_STATUS(AE_NO_MEMORY);
1da177e4 LT	298	}
1da177e4 LT	299
44f6c012 RM	300	/* Set up the parameter object */
44f6c012 RM	301
4be44fcd	302	params[0]->buffer.length = (u32) buffer.length;
1da177e4	303	params[0]->buffer.pointer = buffer.pointer;
4be44fcd	304	params[0]->common.flags = AOPOBJ_DATA_VALID;
1da177e4 LT	305	params[1] = NULL;
	306
	307	info.node = handle;
	308	info.parameters = params;
	309	info.parameter_type = ACPI_PARAM_ARGS;
	310
44f6c012 RM	311	/* Execute the method, no return value */
44f6c012 RM	312
4be44fcd LB	313	status = acpi_ns_evaluate_relative(METHOD_NAME__SRS, &info);
4be44fcd LB	314	if (ACPI_SUCCESS(status)) {
1da177e4 LT	315	/* Delete any return object (especially if implicit_return is enabled) */
	316
	317	if (info.return_object) {
4be44fcd	318	acpi_ut_remove_reference(info.return_object);
1da177e4 LT	319	}
	320	}
	321
44f6c012 RM	322	/* Clean up and return the status from acpi_ns_evaluate_relative */
44f6c012 RM	323
4be44fcd LB	324	acpi_ut_remove_reference(params[0]);
4be44fcd LB	325	return_ACPI_STATUS(status);
1da177e4	326	}