[mirror_ubuntu-artful-kernel.git] / drivers / acpi / acpica / nsparse.c

/******************************************************************************
 *
 * Module Name: nsparse - namespace interface to AML parser
 *
 *****************************************************************************/

/*
 * Copyright (C) 2000 - 2017, 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 "accommon.h"
#include "acnamesp.h"
#include "acparser.h"
#include "acdispat.h"
#include "actables.h"
#include "acinterp.h"

#define _COMPONENT          ACPI_NAMESPACE
ACPI_MODULE_NAME("nsparse")

/*******************************************************************************
 *
 * FUNCTION:    ns_execute_table
 *
 * PARAMETERS:  table_desc      - An ACPI table descriptor for table to parse
 *              start_node      - Where to enter the table into the namespace
 *
 * RETURN:      Status
 *
 * DESCRIPTION: Load ACPI/AML table by executing the entire table as a
 *              term_list.
 *
 ******************************************************************************/
acpi_status
acpi_ns_execute_table(u32 table_index, struct acpi_namespace_node *start_node)
{
	acpi_status status;
	struct acpi_table_header *table;
	acpi_owner_id owner_id;
	struct acpi_evaluate_info *info = NULL;
	u32 aml_length;
	u8 *aml_start;
	union acpi_operand_object *method_obj = NULL;

	ACPI_FUNCTION_TRACE(ns_execute_table);

	status = acpi_get_table_by_index(table_index, &table);
	if (ACPI_FAILURE(status)) {
		return_ACPI_STATUS(status);
	}

	/* Table must consist of at least a complete header */

	if (table->length < sizeof(struct acpi_table_header)) {
		return_ACPI_STATUS(AE_BAD_HEADER);
	}

	aml_start = (u8 *)table + sizeof(struct acpi_table_header);
	aml_length = table->length - sizeof(struct acpi_table_header);

	status = acpi_tb_get_owner_id(table_index, &owner_id);
	if (ACPI_FAILURE(status)) {
		return_ACPI_STATUS(status);
	}

	/* Create, initialize, and link a new temporary method object */

	method_obj = acpi_ut_create_internal_object(ACPI_TYPE_METHOD);
	if (!method_obj) {
		return_ACPI_STATUS(AE_NO_MEMORY);
	}

	/* Allocate the evaluation information block */

	info = ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_evaluate_info));
	if (!info) {
		status = AE_NO_MEMORY;
		goto cleanup;
	}

	ACPI_DEBUG_PRINT((ACPI_DB_PARSE,
			  "Create table code block: %p\n", method_obj));

	method_obj->method.aml_start = aml_start;
	method_obj->method.aml_length = aml_length;
	method_obj->method.owner_id = owner_id;
	method_obj->method.info_flags |= ACPI_METHOD_MODULE_LEVEL;

	info->pass_number = ACPI_IMODE_EXECUTE;
	info->node = start_node;
	info->obj_desc = method_obj;
	info->node_flags = info->node->flags;
	info->full_pathname = acpi_ns_get_normalized_pathname(info->node, TRUE);
	if (!info->full_pathname) {
		status = AE_NO_MEMORY;
		goto cleanup;
	}

	status = acpi_ps_execute_table(info);

cleanup:
	if (info) {
		ACPI_FREE(info->full_pathname);
		info->full_pathname = NULL;
	}
	ACPI_FREE(info);
	acpi_ut_remove_reference(method_obj);
	return_ACPI_STATUS(status);
}

/*******************************************************************************
 *
 * FUNCTION:    ns_one_complete_parse
 *
 * PARAMETERS:  pass_number             - 1 or 2
 *              table_desc              - The table to be parsed.
 *
 * RETURN:      Status
 *
 * DESCRIPTION: Perform one complete parse of an ACPI/AML table.
 *
 ******************************************************************************/

acpi_status
acpi_ns_one_complete_parse(u32 pass_number,
			   u32 table_index,
			   struct acpi_namespace_node *start_node)
{
	union acpi_parse_object *parse_root;
	acpi_status status;
	u32 aml_length;
	u8 *aml_start;
	struct acpi_walk_state *walk_state;
	struct acpi_table_header *table;
	acpi_owner_id owner_id;

	ACPI_FUNCTION_TRACE(ns_one_complete_parse);

	status = acpi_get_table_by_index(table_index, &table);
	if (ACPI_FAILURE(status)) {
		return_ACPI_STATUS(status);
	}

	/* Table must consist of at least a complete header */

	if (table->length < sizeof(struct acpi_table_header)) {
		return_ACPI_STATUS(AE_BAD_HEADER);
	}

	aml_start = (u8 *)table + sizeof(struct acpi_table_header);
	aml_length = table->length - sizeof(struct acpi_table_header);

	status = acpi_tb_get_owner_id(table_index, &owner_id);
	if (ACPI_FAILURE(status)) {
		return_ACPI_STATUS(status);
	}

	/* Create and init a Root Node */

	parse_root = acpi_ps_create_scope_op(aml_start);
	if (!parse_root) {
		return_ACPI_STATUS(AE_NO_MEMORY);
	}

	/* Create and initialize a new walk state */

	walk_state = acpi_ds_create_walk_state(owner_id, NULL, NULL, NULL);
	if (!walk_state) {
		acpi_ps_free_op(parse_root);
		return_ACPI_STATUS(AE_NO_MEMORY);
	}

	status = acpi_ds_init_aml_walk(walk_state, parse_root, NULL,
				       aml_start, aml_length, NULL,
				       (u8)pass_number);
	if (ACPI_FAILURE(status)) {
		acpi_ds_delete_walk_state(walk_state);
		goto cleanup;
	}

	/* Found OSDT table, enable the namespace override feature */

	if (ACPI_COMPARE_NAME(table->signature, ACPI_SIG_OSDT) &&
	    pass_number == ACPI_IMODE_LOAD_PASS1) {
		walk_state->namespace_override = TRUE;
	}

	/* start_node is the default location to load the table */

	if (start_node && start_node != acpi_gbl_root_node) {
		status =
		    acpi_ds_scope_stack_push(start_node, ACPI_TYPE_METHOD,
					     walk_state);
		if (ACPI_FAILURE(status)) {
			acpi_ds_delete_walk_state(walk_state);
			goto cleanup;
		}
	}

	/* Parse the AML */

	ACPI_DEBUG_PRINT((ACPI_DB_PARSE,
			  "*PARSE* pass %u parse\n", pass_number));
	acpi_ex_enter_interpreter();
	status = acpi_ps_parse_aml(walk_state);
	acpi_ex_exit_interpreter();

cleanup:
	acpi_ps_delete_parse_tree(parse_root);
	return_ACPI_STATUS(status);
}

/*******************************************************************************
 *
 * FUNCTION:    acpi_ns_parse_table
 *
 * PARAMETERS:  table_desc      - An ACPI table descriptor for table to parse
 *              start_node      - Where to enter the table into the namespace
 *
 * RETURN:      Status
 *
 * DESCRIPTION: Parse AML within an ACPI table and return a tree of ops
 *
 ******************************************************************************/

acpi_status
acpi_ns_parse_table(u32 table_index, struct acpi_namespace_node *start_node)
{
	acpi_status status;

	ACPI_FUNCTION_TRACE(ns_parse_table);

	if (acpi_gbl_parse_table_as_term_list) {
		ACPI_DEBUG_PRINT((ACPI_DB_PARSE, "**** Start load pass\n"));

		status = acpi_ns_execute_table(table_index, start_node);
		if (ACPI_FAILURE(status)) {
			return_ACPI_STATUS(status);
		}
	} else {
		/*
		 * AML Parse, pass 1
		 *
		 * In this pass, we load most of the namespace. Control methods
		 * are not parsed until later. A parse tree is not created.
		 * Instead, each Parser Op subtree is deleted when it is finished.
		 * This saves a great deal of memory, and allows a small cache of
		 * parse objects to service the entire parse. The second pass of
		 * the parse then performs another complete parse of the AML.
		 */
		ACPI_DEBUG_PRINT((ACPI_DB_PARSE, "**** Start pass 1\n"));

		status = acpi_ns_one_complete_parse(ACPI_IMODE_LOAD_PASS1,
						    table_index, start_node);
		if (ACPI_FAILURE(status)) {
			return_ACPI_STATUS(status);
		}

		/*
		 * AML Parse, pass 2
		 *
		 * In this pass, we resolve forward references and other things
		 * that could not be completed during the first pass.
		 * Another complete parse of the AML is performed, but the
		 * overhead of this is compensated for by the fact that the
		 * parse objects are all cached.
		 */
		ACPI_DEBUG_PRINT((ACPI_DB_PARSE, "**** Start pass 2\n"));
		status = acpi_ns_one_complete_parse(ACPI_IMODE_LOAD_PASS2,
						    table_index, start_node);
		if (ACPI_FAILURE(status)) {
			return_ACPI_STATUS(status);
		}
	}

	return_ACPI_STATUS(status);
}
Commit	Line	Data
1da177e4 LT	1	/******************************************************************************
	2	*
	3	* Module Name: nsparse - namespace interface to AML parser
	4	*
	5	*****************************************************************************/
	6
	7	/*
7735ca0e	8	* Copyright (C) 2000 - 2017, 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	44	#include <acpi/acpi.h>
e2f7a777 LB	45	#include "accommon.h"
	46	#include "acnamesp.h"
	47	#include "acparser.h"
	48	#include "acdispat.h"
	49	#include "actables.h"
74f51b80	50	#include "acinterp.h"
1da177e4	51
1da177e4	52	#define _COMPONENT ACPI_NAMESPACE
4be44fcd	53	ACPI_MODULE_NAME("nsparse")
1da177e4	54
de56ba95 LZ	55	/*******************************************************************************
	56	*
	57	* FUNCTION: ns_execute_table
	58	*
	59	* PARAMETERS: table_desc - An ACPI table descriptor for table to parse
	60	* start_node - Where to enter the table into the namespace
	61	*
	62	* RETURN: Status
	63	*
	64	* DESCRIPTION: Load ACPI/AML table by executing the entire table as a
	65	* term_list.
	66	*
	67	******************************************************************************/
	68	acpi_status
	69	acpi_ns_execute_table(u32 table_index, struct acpi_namespace_node *start_node)
	70	{
	71	acpi_status status;
	72	struct acpi_table_header *table;
	73	acpi_owner_id owner_id;
	74	struct acpi_evaluate_info *info = NULL;
	75	u32 aml_length;
	76	u8 *aml_start;
	77	union acpi_operand_object *method_obj = NULL;
	78
	79	ACPI_FUNCTION_TRACE(ns_execute_table);
	80
	81	status = acpi_get_table_by_index(table_index, &table);
	82	if (ACPI_FAILURE(status)) {
	83	return_ACPI_STATUS(status);
	84	}
	85
	86	/* Table must consist of at least a complete header */
	87
	88	if (table->length < sizeof(struct acpi_table_header)) {
	89	return_ACPI_STATUS(AE_BAD_HEADER);
	90	}
	91
	92	aml_start = (u8 *)table + sizeof(struct acpi_table_header);
	93	aml_length = table->length - sizeof(struct acpi_table_header);
	94
	95	status = acpi_tb_get_owner_id(table_index, &owner_id);
	96	if (ACPI_FAILURE(status)) {
	97	return_ACPI_STATUS(status);
	98	}
	99
	100	/* Create, initialize, and link a new temporary method object */
	101
	102	method_obj = acpi_ut_create_internal_object(ACPI_TYPE_METHOD);
	103	if (!method_obj) {
	104	return_ACPI_STATUS(AE_NO_MEMORY);
	105	}
	106
	107	/* Allocate the evaluation information block */
	108
	109	info = ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_evaluate_info));
	110	if (!info) {
	111	status = AE_NO_MEMORY;
	112	goto cleanup;
	113	}
	114
	115	ACPI_DEBUG_PRINT((ACPI_DB_PARSE,
	116	"Create table code block: %p\n", method_obj));
	117
	118	method_obj->method.aml_start = aml_start;
119	method_obj->method.aml_length = aml_length;
120	method_obj->method.owner_id = owner_id;
121	method_obj->method.info_flags \|= ACPI_METHOD_MODULE_LEVEL;
122
123	info->pass_number = ACPI_IMODE_EXECUTE;
124	info->node = start_node;
125	info->obj_desc = method_obj;
126	info->node_flags = info->node->flags;
127	info->full_pathname = acpi_ns_get_normalized_pathname(info->node, TRUE);
128	if (!info->full_pathname) {
129	status = AE_NO_MEMORY;
130	goto cleanup;
131	}
132
133	status = acpi_ps_execute_table(info);
134
135	cleanup:
136	if (info) {
137	ACPI_FREE(info->full_pathname);
138	info->full_pathname = NULL;
139	}
140	ACPI_FREE(info);
141	acpi_ut_remove_reference(method_obj);
142	return_ACPI_STATUS(status);
143	}
144
1da177e4 LT	145	/*******************************************************************************
	146	*
	147	* FUNCTION: ns_one_complete_parse
	148	*
	149	* PARAMETERS: pass_number - 1 or 2
	150	* table_desc - The table to be parsed.
	151	*
	152	* RETURN: Status
	153	*
	154	* DESCRIPTION: Perform one complete parse of an ACPI/AML table.
	155	*
	156	******************************************************************************/
de56ba95	157
1da177e4	158	acpi_status
67a119f9 BM	159	acpi_ns_one_complete_parse(u32 pass_number,
	160	u32 table_index,
	161	struct acpi_namespace_node *start_node)
1da177e4	162	{
4be44fcd LB	163	union acpi_parse_object *parse_root;
4be44fcd LB	164	acpi_status status;
eb87a052	165	u32 aml_length;
f3d2e786	166	u8 *aml_start;
4be44fcd	167	struct acpi_walk_state *walk_state;
f3d2e786 BM	168	struct acpi_table_header *table;
f3d2e786 BM	169	acpi_owner_id owner_id;
1da177e4	170
b229cf92	171	ACPI_FUNCTION_TRACE(ns_one_complete_parse);
1da177e4	172
62eb935b LZ	173	status = acpi_get_table_by_index(table_index, &table);
	174	if (ACPI_FAILURE(status)) {
	175	return_ACPI_STATUS(status);
	176	}
	177
	178	/* Table must consist of at least a complete header */
	179
	180	if (table->length < sizeof(struct acpi_table_header)) {
	181	return_ACPI_STATUS(AE_BAD_HEADER);
	182	}
	183
	184	aml_start = (u8 *)table + sizeof(struct acpi_table_header);
	185	aml_length = table->length - sizeof(struct acpi_table_header);
	186
f3d2e786 BM	187	status = acpi_tb_get_owner_id(table_index, &owner_id);
	188	if (ACPI_FAILURE(status)) {
	189	return_ACPI_STATUS(status);
	190	}
	191
1da177e4 LT	192	/* Create and init a Root Node */
1da177e4 LT	193
62eb935b	194	parse_root = acpi_ps_create_scope_op(aml_start);
1da177e4	195	if (!parse_root) {
4be44fcd	196	return_ACPI_STATUS(AE_NO_MEMORY);
1da177e4 LT	197	}
	198
	199	/* Create and initialize a new walk state */
	200
f3d2e786	201	walk_state = acpi_ds_create_walk_state(owner_id, NULL, NULL, NULL);
1da177e4	202	if (!walk_state) {
4be44fcd LB	203	acpi_ps_free_op(parse_root);
4be44fcd LB	204	return_ACPI_STATUS(AE_NO_MEMORY);
1da177e4 LT	205	}
1da177e4 LT	206
62eb935b LZ	207	status = acpi_ds_init_aml_walk(walk_state, parse_root, NULL,
	208	aml_start, aml_length, NULL,
	209	(u8)pass_number);
f3d2e786 BM	210	if (ACPI_FAILURE(status)) {
f3d2e786 BM	211	acpi_ds_delete_walk_state(walk_state);
62eb935b	212	goto cleanup;
f3d2e786 BM	213	}
f3d2e786 BM	214
fe536995 BM	215	/* Found OSDT table, enable the namespace override feature */
	216
	217	if (ACPI_COMPARE_NAME(table->signature, ACPI_SIG_OSDT) &&
	218	pass_number == ACPI_IMODE_LOAD_PASS1) {
	219	walk_state->namespace_override = TRUE;
	220	}
	221
7f4ac9f9 BM	222	/* start_node is the default location to load the table */
	223
	224	if (start_node && start_node != acpi_gbl_root_node) {
1d18c058 BM	225	status =
	226	acpi_ds_scope_stack_push(start_node, ACPI_TYPE_METHOD,
	227	walk_state);
	228	if (ACPI_FAILURE(status)) {
	229	acpi_ds_delete_walk_state(walk_state);
	230	goto cleanup;
	231	}
7f4ac9f9 BM	232	}
7f4ac9f9 BM	233
1da177e4 LT	234	/* Parse the AML */
1da177e4 LT	235
1fad8738 BM	236	ACPI_DEBUG_PRINT((ACPI_DB_PARSE,
1fad8738 BM	237	"PARSE pass %u parse\n", pass_number));
74f51b80	238	acpi_ex_enter_interpreter();
4be44fcd	239	status = acpi_ps_parse_aml(walk_state);
74f51b80	240	acpi_ex_exit_interpreter();
1da177e4	241
10622bf8	242	cleanup:
4be44fcd LB	243	acpi_ps_delete_parse_tree(parse_root);
4be44fcd LB	244	return_ACPI_STATUS(status);
1da177e4 LT	245	}
1da177e4 LT	246
1da177e4 LT	247	/*******************************************************************************
	248	*
	249	* FUNCTION: acpi_ns_parse_table
	250	*
	251	* PARAMETERS: table_desc - An ACPI table descriptor for table to parse
	252	* start_node - Where to enter the table into the namespace
	253	*
	254	* RETURN: Status
	255	*
	256	* DESCRIPTION: Parse AML within an ACPI table and return a tree of ops
	257	*
	258	******************************************************************************/
	259
	260	acpi_status
67a119f9	261	acpi_ns_parse_table(u32 table_index, struct acpi_namespace_node *start_node)
1da177e4	262	{
4be44fcd	263	acpi_status status;
1da177e4	264
b229cf92	265	ACPI_FUNCTION_TRACE(ns_parse_table);
1da177e4	266
de56ba95 LZ	267	if (acpi_gbl_parse_table_as_term_list) {
de56ba95 LZ	268	ACPI_DEBUG_PRINT((ACPI_DB_PARSE, "**** Start load pass\n"));
1da177e4	269
de56ba95 LZ	270	status = acpi_ns_execute_table(table_index, start_node);
	271	if (ACPI_FAILURE(status)) {
	272	return_ACPI_STATUS(status);
	273	}
	274	} else {
	275	/*
	276	* AML Parse, pass 1
	277	*
	278	* In this pass, we load most of the namespace. Control methods
	279	* are not parsed until later. A parse tree is not created.
	280	* Instead, each Parser Op subtree is deleted when it is finished.
	281	* This saves a great deal of memory, and allows a small cache of
	282	* parse objects to service the entire parse. The second pass of
	283	* the parse then performs another complete parse of the AML.
	284	*/
	285	ACPI_DEBUG_PRINT((ACPI_DB_PARSE, "**** Start pass 1\n"));
	286
	287	status = acpi_ns_one_complete_parse(ACPI_IMODE_LOAD_PASS1,
	288	table_index, start_node);
	289	if (ACPI_FAILURE(status)) {
	290	return_ACPI_STATUS(status);
	291	}
	292
	293	/*
	294	* AML Parse, pass 2
	295	*
	296	* In this pass, we resolve forward references and other things
	297	* that could not be completed during the first pass.
	298	* Another complete parse of the AML is performed, but the
	299	* overhead of this is compensated for by the fact that the
	300	* parse objects are all cached.
	301	*/
	302	ACPI_DEBUG_PRINT((ACPI_DB_PARSE, "**** Start pass 2\n"));
	303	status = acpi_ns_one_complete_parse(ACPI_IMODE_LOAD_PASS2,
	304	table_index, start_node);
	305	if (ACPI_FAILURE(status)) {
	306	return_ACPI_STATUS(status);
	307	}
1da177e4 LT	308	}
1da177e4 LT	309
4be44fcd	310	return_ACPI_STATUS(status);
1da177e4	311	}