[deliverable/linux.git] / drivers / acpi / parser / psxface.c

/******************************************************************************
 *
 * Module Name: psxface - Parser external interfaces
 *
 *****************************************************************************/

/*
 * Copyright (C) 2000 - 2008, Intel Corp.
 * 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/acparser.h>
#include <acpi/acdispat.h>
#include <acpi/acinterp.h>

#define _COMPONENT          ACPI_PARSER
ACPI_MODULE_NAME("psxface")

/* Local Prototypes */
static void acpi_ps_start_trace(struct acpi_evaluate_info *info);

static void acpi_ps_stop_trace(struct acpi_evaluate_info *info);

static void
acpi_ps_update_parameter_list(struct acpi_evaluate_info *info, u16 action);

/*******************************************************************************
 *
 * FUNCTION:    acpi_debug_trace
 *
 * PARAMETERS:  method_name     - Valid ACPI name string
 *              debug_level     - Optional level mask. 0 to use default
 *              debug_layer     - Optional layer mask. 0 to use default
 *              Flags           - bit 1: one shot(1) or persistent(0)
 *
 * RETURN:      Status
 *
 * DESCRIPTION: External interface to enable debug tracing during control
 *              method execution
 *
 ******************************************************************************/

acpi_status
acpi_debug_trace(char *name, u32 debug_level, u32 debug_layer, u32 flags)
{
	acpi_status status;

	status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
	if (ACPI_FAILURE(status)) {
		return (status);
	}

	/* TBDs: Validate name, allow full path or just nameseg */

	acpi_gbl_trace_method_name = *ACPI_CAST_PTR(u32, name);
	acpi_gbl_trace_flags = flags;

	if (debug_level) {
		acpi_gbl_trace_dbg_level = debug_level;
	}
	if (debug_layer) {
		acpi_gbl_trace_dbg_layer = debug_layer;
	}

	(void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
	return (AE_OK);
}

/*******************************************************************************
 *
 * FUNCTION:    acpi_ps_start_trace
 *
 * PARAMETERS:  Info        - Method info struct
 *
 * RETURN:      None
 *
 * DESCRIPTION: Start control method execution trace
 *
 ******************************************************************************/

static void acpi_ps_start_trace(struct acpi_evaluate_info *info)
{
	acpi_status status;

	ACPI_FUNCTION_ENTRY();

	status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
	if (ACPI_FAILURE(status)) {
		return;
	}

	if ((!acpi_gbl_trace_method_name) ||
	    (acpi_gbl_trace_method_name != info->resolved_node->name.integer)) {
		goto exit;
	}

	acpi_gbl_original_dbg_level = acpi_dbg_level;
	acpi_gbl_original_dbg_layer = acpi_dbg_layer;

	acpi_dbg_level = 0x00FFFFFF;
	acpi_dbg_layer = ACPI_UINT32_MAX;

	if (acpi_gbl_trace_dbg_level) {
		acpi_dbg_level = acpi_gbl_trace_dbg_level;
	}
	if (acpi_gbl_trace_dbg_layer) {
		acpi_dbg_layer = acpi_gbl_trace_dbg_layer;
	}

      exit:
	(void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
}

/*******************************************************************************
 *
 * FUNCTION:    acpi_ps_stop_trace
 *
 * PARAMETERS:  Info        - Method info struct
 *
 * RETURN:      None
 *
 * DESCRIPTION: Stop control method execution trace
 *
 ******************************************************************************/

static void acpi_ps_stop_trace(struct acpi_evaluate_info *info)
{
	acpi_status status;

	ACPI_FUNCTION_ENTRY();

	status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
	if (ACPI_FAILURE(status)) {
		return;
	}

	if ((!acpi_gbl_trace_method_name) ||
	    (acpi_gbl_trace_method_name != info->resolved_node->name.integer)) {
		goto exit;
	}

	/* Disable further tracing if type is one-shot */

	if (acpi_gbl_trace_flags & 1) {
		acpi_gbl_trace_method_name = 0;
		acpi_gbl_trace_dbg_level = 0;
		acpi_gbl_trace_dbg_layer = 0;
	}

	acpi_dbg_level = acpi_gbl_original_dbg_level;
	acpi_dbg_layer = acpi_gbl_original_dbg_layer;

      exit:
	(void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
}

/*******************************************************************************
 *
 * FUNCTION:    acpi_ps_execute_method
 *
 * PARAMETERS:  Info            - Method info block, contains:
 *                  Node            - Method Node to execute
 *                  obj_desc        - Method object
 *                  Parameters      - List of parameters to pass to the method,
 *                                    terminated by NULL. Params itself may be
 *                                    NULL if no parameters are being passed.
 *                  return_object   - Where to put method's return value (if
 *                                    any). If NULL, no value is returned.
 *                  parameter_type  - Type of Parameter list
 *                  return_object   - Where to put method's return value (if
 *                                    any). If NULL, no value is returned.
 *                  pass_number     - Parse or execute pass
 *
 * RETURN:      Status
 *
 * DESCRIPTION: Execute a control method
 *
 ******************************************************************************/

acpi_status acpi_ps_execute_method(struct acpi_evaluate_info *info)
{
	acpi_status status;
	union acpi_parse_object *op;
	struct acpi_walk_state *walk_state;

	ACPI_FUNCTION_TRACE(ps_execute_method);

	/* Validate the Info and method Node */

	if (!info || !info->resolved_node) {
		return_ACPI_STATUS(AE_NULL_ENTRY);
	}

	/* Init for new method, wait on concurrency semaphore */

	status =
	    acpi_ds_begin_method_execution(info->resolved_node, info->obj_desc,
					   NULL);
	if (ACPI_FAILURE(status)) {
		return_ACPI_STATUS(status);
	}

	/*
	 * The caller "owns" the parameters, so give each one an extra reference
	 */
	acpi_ps_update_parameter_list(info, REF_INCREMENT);

	/* Begin tracing if requested */

	acpi_ps_start_trace(info);

	/*
	 * Execute the method. Performs parse simultaneously
	 */
	ACPI_DEBUG_PRINT((ACPI_DB_PARSE,
			  "**** Begin Method Parse/Execute [%4.4s] **** Node=%p Obj=%p\n",
			  info->resolved_node->name.ascii, info->resolved_node,
			  info->obj_desc));

	/* Create and init a Root Node */

	op = acpi_ps_create_scope_op();
	if (!op) {
		status = AE_NO_MEMORY;
		goto cleanup;
	}

	/* Create and initialize a new walk state */

	info->pass_number = ACPI_IMODE_EXECUTE;
	walk_state =
	    acpi_ds_create_walk_state(info->obj_desc->method.owner_id, NULL,
				      NULL, NULL);
	if (!walk_state) {
		status = AE_NO_MEMORY;
		goto cleanup;
	}

	status = acpi_ds_init_aml_walk(walk_state, op, info->resolved_node,
				       info->obj_desc->method.aml_start,
				       info->obj_desc->method.aml_length, info,
				       info->pass_number);
	if (ACPI_FAILURE(status)) {
		acpi_ds_delete_walk_state(walk_state);
		goto cleanup;
	}

	/* Parse the AML */

	status = acpi_ps_parse_aml(walk_state);

	/* walk_state was deleted by parse_aml */

      cleanup:
	acpi_ps_delete_parse_tree(op);

	/* End optional tracing */

	acpi_ps_stop_trace(info);

	/* Take away the extra reference that we gave the parameters above */

	acpi_ps_update_parameter_list(info, REF_DECREMENT);

	/* Exit now if error above */

	if (ACPI_FAILURE(status)) {
		return_ACPI_STATUS(status);
	}

	/*
	 * If the method has returned an object, signal this to the caller with
	 * a control exception code
	 */
	if (info->return_object) {
		ACPI_DEBUG_PRINT((ACPI_DB_PARSE, "Method returned ObjDesc=%p\n",
				  info->return_object));
		ACPI_DUMP_STACK_ENTRY(info->return_object);

		status = AE_CTRL_RETURN_VALUE;
	}

	return_ACPI_STATUS(status);
}

/*******************************************************************************
 *
 * FUNCTION:    acpi_ps_update_parameter_list
 *
 * PARAMETERS:  Info            - See struct acpi_evaluate_info
 *                                (Used: parameter_type and Parameters)
 *              Action          - Add or Remove reference
 *
 * RETURN:      Status
 *
 * DESCRIPTION: Update reference count on all method parameter objects
 *
 ******************************************************************************/

static void
acpi_ps_update_parameter_list(struct acpi_evaluate_info *info, u16 action)
{
	acpi_native_uint i;

	if ((info->parameter_type == ACPI_PARAM_ARGS) && (info->parameters)) {

		/* Update reference count for each parameter */

		for (i = 0; info->parameters[i]; i++) {

			/* Ignore errors, just do them all */

			(void)acpi_ut_update_object_reference(info->
							      parameters[i],
							      action);
		}
	}
}
Commit	Line	Data
1da177e4 LT	1	/******************************************************************************
	2	*
	3	* Module Name: psxface - Parser external interfaces
	4	*
	5	*****************************************************************************/
	6
	7	/*
75a44ce0	8	* Copyright (C) 2000 - 2008, Intel Corp.
1da177e4 LT	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/acparser.h>
	46	#include <acpi/acdispat.h>
	47	#include <acpi/acinterp.h>
1da177e4	48
1da177e4	49	#define _COMPONENT ACPI_PARSER
4be44fcd	50	ACPI_MODULE_NAME("psxface")
1da177e4	51
0c9938cc	52	/* Local Prototypes */
4119532c	53	static void acpi_ps_start_trace(struct acpi_evaluate_info *info);
50eca3eb	54
4119532c	55	static void acpi_ps_stop_trace(struct acpi_evaluate_info *info);
50eca3eb	56
0c9938cc	57	static void
4119532c	58	acpi_ps_update_parameter_list(struct acpi_evaluate_info *info, u16 action);
1da177e4	59
50eca3eb BM	60	/*******************************************************************************
	61	*
	62	* FUNCTION: acpi_debug_trace
	63	*
	64	* PARAMETERS: method_name - Valid ACPI name string
	65	* debug_level - Optional level mask. 0 to use default
	66	* debug_layer - Optional layer mask. 0 to use default
	67	* Flags - bit 1: one shot(1) or persistent(0)
	68	*
	69	* RETURN: Status
	70	*
	71	* DESCRIPTION: External interface to enable debug tracing during control
	72	* method execution
	73	*
	74	******************************************************************************/
	75
	76	acpi_status
	77	acpi_debug_trace(char *name, u32 debug_level, u32 debug_layer, u32 flags)
	78	{
	79	acpi_status status;
	80
	81	status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
	82	if (ACPI_FAILURE(status)) {
	83	return (status);
	84	}
	85
	86	/* TBDs: Validate name, allow full path or just nameseg */
	87
c51a4de8	88	acpi_gbl_trace_method_name = *ACPI_CAST_PTR(u32, name);
50eca3eb BM	89	acpi_gbl_trace_flags = flags;
	90
	91	if (debug_level) {
	92	acpi_gbl_trace_dbg_level = debug_level;
	93	}
	94	if (debug_layer) {
	95	acpi_gbl_trace_dbg_layer = debug_layer;
	96	}
	97
	98	(void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
	99	return (AE_OK);
	100	}
	101
	102	/*******************************************************************************
	103	*
	104	* FUNCTION: acpi_ps_start_trace
	105	*
	106	* PARAMETERS: Info - Method info struct
	107	*
	108	* RETURN: None
	109	*
	110	* DESCRIPTION: Start control method execution trace
	111	*
	112	******************************************************************************/
	113
4119532c	114	static void acpi_ps_start_trace(struct acpi_evaluate_info *info)
50eca3eb BM	115	{
	116	acpi_status status;
	117
	118	ACPI_FUNCTION_ENTRY();
	119
	120	status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
	121	if (ACPI_FAILURE(status)) {
	122	return;
	123	}
	124
	125	if ((!acpi_gbl_trace_method_name) \|\|
4119532c	126	(acpi_gbl_trace_method_name != info->resolved_node->name.integer)) {
50eca3eb BM	127	goto exit;
	128	}
	129
	130	acpi_gbl_original_dbg_level = acpi_dbg_level;
	131	acpi_gbl_original_dbg_layer = acpi_dbg_layer;
	132
	133	acpi_dbg_level = 0x00FFFFFF;
	134	acpi_dbg_layer = ACPI_UINT32_MAX;
	135
	136	if (acpi_gbl_trace_dbg_level) {
	137	acpi_dbg_level = acpi_gbl_trace_dbg_level;
	138	}
	139	if (acpi_gbl_trace_dbg_layer) {
	140	acpi_dbg_layer = acpi_gbl_trace_dbg_layer;
	141	}
	142
	143	exit:
	144	(void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
	145	}
	146
	147	/*******************************************************************************
	148	*
	149	* FUNCTION: acpi_ps_stop_trace
	150	*
	151	* PARAMETERS: Info - Method info struct
	152	*
	153	* RETURN: None
	154	*
	155	* DESCRIPTION: Stop control method execution trace
	156	*
	157	******************************************************************************/
	158
4119532c	159	static void acpi_ps_stop_trace(struct acpi_evaluate_info *info)
50eca3eb BM	160	{
	161	acpi_status status;
	162
	163	ACPI_FUNCTION_ENTRY();
	164
	165	status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
	166	if (ACPI_FAILURE(status)) {
	167	return;
	168	}
	169
	170	if ((!acpi_gbl_trace_method_name) \|\|
4119532c	171	(acpi_gbl_trace_method_name != info->resolved_node->name.integer)) {
50eca3eb BM	172	goto exit;
	173	}
	174
	175	/* Disable further tracing if type is one-shot */
	176
	177	if (acpi_gbl_trace_flags & 1) {
	178	acpi_gbl_trace_method_name = 0;
	179	acpi_gbl_trace_dbg_level = 0;
	180	acpi_gbl_trace_dbg_layer = 0;
	181	}
	182
	183	acpi_dbg_level = acpi_gbl_original_dbg_level;
	184	acpi_dbg_layer = acpi_gbl_original_dbg_layer;
	185
	186	exit:
	187	(void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
	188	}
	189
1da177e4 LT	190	/*******************************************************************************
1da177e4 LT	191	*
0c9938cc	192	* FUNCTION: acpi_ps_execute_method
1da177e4	193	*
44f6c012 RM	194	* PARAMETERS: Info - Method info block, contains:
44f6c012 RM	195	* Node - Method Node to execute
0c9938cc	196	* obj_desc - Method object
44f6c012	197	* Parameters - List of parameters to pass to the method,
1da177e4 LT	198	* terminated by NULL. Params itself may be
1da177e4 LT	199	* NULL if no parameters are being passed.
44f6c012 RM	200	* return_object - Where to put method's return value (if
	201	* any). If NULL, no value is returned.
	202	* parameter_type - Type of Parameter list
	203	* return_object - Where to put method's return value (if
	204	* any). If NULL, no value is returned.
0c9938cc	205	* pass_number - Parse or execute pass
1da177e4 LT	206	*
	207	* RETURN: Status
	208	*
	209	* DESCRIPTION: Execute a control method
	210	*
	211	******************************************************************************/
	212
4119532c	213	acpi_status acpi_ps_execute_method(struct acpi_evaluate_info *info)
1da177e4	214	{
4be44fcd	215	acpi_status status;
9bc75cff VP	216	union acpi_parse_object *op;
9bc75cff VP	217	struct acpi_walk_state *walk_state;
1da177e4	218
b229cf92	219	ACPI_FUNCTION_TRACE(ps_execute_method);
1da177e4	220
0c9938cc	221	/* Validate the Info and method Node */
1da177e4	222
4119532c	223	if (!info \|\| !info->resolved_node) {
4be44fcd	224	return_ACPI_STATUS(AE_NULL_ENTRY);
1da177e4 LT	225	}
1da177e4 LT	226
1da177e4 LT	227	/* Init for new method, wait on concurrency semaphore */
1da177e4 LT	228
4be44fcd	229	status =
4119532c BM	230	acpi_ds_begin_method_execution(info->resolved_node, info->obj_desc,
4119532c BM	231	NULL);
4be44fcd LB	232	if (ACPI_FAILURE(status)) {
4be44fcd LB	233	return_ACPI_STATUS(status);
1da177e4 LT	234	}
1da177e4 LT	235
0c9938cc	236	/*
9bc75cff	237	* The caller "owns" the parameters, so give each one an extra reference
0c9938cc	238	*/
4be44fcd	239	acpi_ps_update_parameter_list(info, REF_INCREMENT);
1da177e4	240
50eca3eb BM	241	/* Begin tracing if requested */
	242
	243	acpi_ps_start_trace(info);
	244
0c9938cc	245	/*
9bc75cff	246	* Execute the method. Performs parse simultaneously
0c9938cc	247	*/
4be44fcd	248	ACPI_DEBUG_PRINT((ACPI_DB_PARSE,
9bc75cff VP	249	"** Begin Method Parse/Execute [%4.4s] ** Node=%p Obj=%p\n",
	250	info->resolved_node->name.ascii, info->resolved_node,
	251	info->obj_desc));
1da177e4	252
9bc75cff VP	253	/* Create and init a Root Node */
	254
	255	op = acpi_ps_create_scope_op();
	256	if (!op) {
	257	status = AE_NO_MEMORY;
0c9938cc	258	goto cleanup;
1da177e4 LT	259	}
1da177e4 LT	260
9bc75cff	261	/* Create and initialize a new walk state */
1da177e4	262
ec3153fb	263	info->pass_number = ACPI_IMODE_EXECUTE;
9bc75cff VP	264	walk_state =
	265	acpi_ds_create_walk_state(info->obj_desc->method.owner_id, NULL,
	266	NULL, NULL);
	267	if (!walk_state) {
	268	status = AE_NO_MEMORY;
	269	goto cleanup;
	270	}
	271
	272	status = acpi_ds_init_aml_walk(walk_state, op, info->resolved_node,
	273	info->obj_desc->method.aml_start,
	274	info->obj_desc->method.aml_length, info,
	275	info->pass_number);
	276	if (ACPI_FAILURE(status)) {
	277	acpi_ds_delete_walk_state(walk_state);
	278	goto cleanup;
	279	}
	280
	281	/* Parse the AML */
	282
	283	status = acpi_ps_parse_aml(walk_state);
	284
	285	/* walk_state was deleted by parse_aml */
0c9938cc	286
4be44fcd	287	cleanup:
9bc75cff VP	288	acpi_ps_delete_parse_tree(op);
9bc75cff VP	289
50eca3eb BM	290	/* End optional tracing */
	291
	292	acpi_ps_stop_trace(info);
	293
0c9938cc	294	/* Take away the extra reference that we gave the parameters above */
1da177e4	295
4be44fcd	296	acpi_ps_update_parameter_list(info, REF_DECREMENT);
1da177e4	297
0c9938cc	298	/* Exit now if error above */
1da177e4	299
4be44fcd LB	300	if (ACPI_FAILURE(status)) {
4be44fcd LB	301	return_ACPI_STATUS(status);
1da177e4 LT	302	}
1da177e4 LT	303
0c9938cc RM	304	/*
	305	* If the method has returned an object, signal this to the caller with
	306	* a control exception code
	307	*/
	308	if (info->return_object) {
b229cf92	309	ACPI_DEBUG_PRINT((ACPI_DB_PARSE, "Method returned ObjDesc=%p\n",
4be44fcd LB	310	info->return_object));
4be44fcd LB	311	ACPI_DUMP_STACK_ENTRY(info->return_object);
0c9938cc RM	312
0c9938cc RM	313	status = AE_CTRL_RETURN_VALUE;
1da177e4 LT	314	}
1da177e4 LT	315
4be44fcd	316	return_ACPI_STATUS(status);
0c9938cc	317	}
44f6c012	318
0c9938cc RM	319	/*******************************************************************************
	320	*
	321	* FUNCTION: acpi_ps_update_parameter_list
	322	*
4119532c	323	* PARAMETERS: Info - See struct acpi_evaluate_info
0c9938cc RM	324	* (Used: parameter_type and Parameters)
	325	* Action - Add or Remove reference
	326	*
	327	* RETURN: Status
	328	*
	329	* DESCRIPTION: Update reference count on all method parameter objects
	330	*
	331	******************************************************************************/
1da177e4	332
0c9938cc	333	static void
4119532c	334	acpi_ps_update_parameter_list(struct acpi_evaluate_info *info, u16 action)
0c9938cc	335	{
4be44fcd	336	acpi_native_uint i;
1da177e4	337
4be44fcd	338	if ((info->parameter_type == ACPI_PARAM_ARGS) && (info->parameters)) {
52fc0b02	339
0c9938cc	340	/* Update reference count for each parameter */
1da177e4 LT	341
1da177e4 LT	342	for (i = 0; info->parameters[i]; i++) {
52fc0b02	343
1da177e4 LT	344	/* Ignore errors, just do them all */
1da177e4 LT	345
4be44fcd LB	346	(void)acpi_ut_update_object_reference(info->
	347	parameters[i],
	348	action);
1da177e4 LT	349	}
1da177e4 LT	350	}
0c9938cc	351	}