summaryrefslogtreecommitdiffstats
path: root/drivers/acpi/acpica/utxface.c
blob: 644e8c8ebc4b30c6ea3ca607708e3478c806c4bc (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
/******************************************************************************
 *
 * Module Name: utxface - External interfaces for "global" ACPI functions
 *
 *****************************************************************************/

/*
 * Copyright (C) 2000 - 2012, 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 <linux/export.h>
#include <acpi/acpi.h>
#include "accommon.h"
#include "acevents.h"
#include "acnamesp.h"
#include "acdebug.h"
#include "actables.h"
#include "acinterp.h"

#define _COMPONENT          ACPI_UTILITIES
ACPI_MODULE_NAME("utxface")

#ifndef ACPI_ASL_COMPILER
/*******************************************************************************
 *
 * FUNCTION:    acpi_initialize_subsystem
 *
 * PARAMETERS:  None
 *
 * RETURN:      Status
 *
 * DESCRIPTION: Initializes all global variables.  This is the first function
 *              called, so any early initialization belongs here.
 *
 ******************************************************************************/
acpi_status __init acpi_initialize_subsystem(void)
{
	acpi_status status;

	ACPI_FUNCTION_TRACE(acpi_initialize_subsystem);

	acpi_gbl_startup_flags = ACPI_SUBSYSTEM_INITIALIZE;
	ACPI_DEBUG_EXEC(acpi_ut_init_stack_ptr_trace());

	/* Initialize the OS-Dependent layer */

	status = acpi_os_initialize();
	if (ACPI_FAILURE(status)) {
		ACPI_EXCEPTION((AE_INFO, status, "During OSL initialization"));
		return_ACPI_STATUS(status);
	}

	/* Initialize all globals used by the subsystem */

	status = acpi_ut_init_globals();
	if (ACPI_FAILURE(status)) {
		ACPI_EXCEPTION((AE_INFO, status,
				"During initialization of globals"));
		return_ACPI_STATUS(status);
	}

	/* Create the default mutex objects */

	status = acpi_ut_mutex_initialize();
	if (ACPI_FAILURE(status)) {
		ACPI_EXCEPTION((AE_INFO, status,
				"During Global Mutex creation"));
		return_ACPI_STATUS(status);
	}

	/*
	 * Initialize the namespace manager and
	 * the root of the namespace tree
	 */
	status = acpi_ns_root_initialize();
	if (ACPI_FAILURE(status)) {
		ACPI_EXCEPTION((AE_INFO, status,
				"During Namespace initialization"));
		return_ACPI_STATUS(status);
	}

	/* Initialize the global OSI interfaces list with the static names */

	status = acpi_ut_initialize_interfaces();
	if (ACPI_FAILURE(status)) {
		ACPI_EXCEPTION((AE_INFO, status,
				"During OSI interfaces initialization"));
		return_ACPI_STATUS(status);
	}

	/* If configured, initialize the AML debugger */

	ACPI_DEBUGGER_EXEC(status = acpi_db_initialize());
	return_ACPI_STATUS(status);
}

/*******************************************************************************
 *
 * FUNCTION:    acpi_enable_subsystem
 *
 * PARAMETERS:  Flags           - Init/enable Options
 *
 * RETURN:      Status
 *
 * DESCRIPTION: Completes the subsystem initialization including hardware.
 *              Puts system into ACPI mode if it isn't already.
 *
 ******************************************************************************/
acpi_status acpi_enable_subsystem(u32 flags)
{
	acpi_status status = AE_OK;

	ACPI_FUNCTION_TRACE(acpi_enable_subsystem);

	/* Enable ACPI mode */

	if (!(flags & ACPI_NO_ACPI_ENABLE)) {
		ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
				  "[Init] Going into ACPI mode\n"));

		acpi_gbl_original_mode = acpi_hw_get_mode();

		status = acpi_enable();
		if (ACPI_FAILURE(status)) {
			ACPI_WARNING((AE_INFO, "AcpiEnable failed"));
			return_ACPI_STATUS(status);
		}
	}

	/*
	 * Obtain a permanent mapping for the FACS. This is required for the
	 * Global Lock and the Firmware Waking Vector
	 */
	status = acpi_tb_initialize_facs();
	if (ACPI_FAILURE(status)) {
		ACPI_WARNING((AE_INFO, "Could not map the FACS table"));
		return_ACPI_STATUS(status);
	}

	/*
	 * Install the default op_region handlers. These are installed unless
	 * other handlers have already been installed via the
	 * install_address_space_handler interface.
	 */
	if (!(flags & ACPI_NO_ADDRESS_SPACE_INIT)) {
		ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
				  "[Init] Installing default address space handlers\n"));

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

	/*
	 * Initialize ACPI Event handling (Fixed and General Purpose)
	 *
	 * Note1: We must have the hardware and events initialized before we can
	 * execute any control methods safely. Any control method can require
	 * ACPI hardware support, so the hardware must be fully initialized before
	 * any method execution!
	 *
	 * Note2: Fixed events are initialized and enabled here. GPEs are
	 * initialized, but cannot be enabled until after the hardware is
	 * completely initialized (SCI and global_lock activated)
	 */
	if (!(flags & ACPI_NO_EVENT_INIT)) {
		ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
				  "[Init] Initializing ACPI events\n"));

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

	/*
	 * Install the SCI handler and Global Lock handler. This completes the
	 * hardware initialization.
	 */
	if (!(flags & ACPI_NO_HANDLER_INIT)) {
		ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
				  "[Init] Installing SCI/GL handlers\n"));

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

	return_ACPI_STATUS(status);
}

ACPI_EXPORT_SYMBOL(acpi_enable_subsystem)

/*******************************************************************************
 *
 * FUNCTION:    acpi_initialize_objects
 *
 * PARAMETERS:  Flags           - Init/enable Options
 *
 * RETURN:      Status
 *
 * DESCRIPTION: Completes namespace initialization by initializing device
 *              objects and executing AML code for Regions, buffers, etc.
 *
 ******************************************************************************/
acpi_status acpi_initialize_objects(u32 flags)
{
	acpi_status status = AE_OK;

	ACPI_FUNCTION_TRACE(acpi_initialize_objects);

	/*
	 * Run all _REG methods
	 *
	 * Note: Any objects accessed by the _REG methods will be automatically
	 * initialized, even if they contain executable AML (see the call to
	 * acpi_ns_initialize_objects below).
	 */
	if (!(flags & ACPI_NO_ADDRESS_SPACE_INIT)) {
		ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
				  "[Init] Executing _REG OpRegion methods\n"));

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

	/*
	 * Execute any module-level code that was detected during the table load
	 * phase. Although illegal since ACPI 2.0, there are many machines that
	 * contain this type of code. Each block of detected executable AML code
	 * outside of any control method is wrapped with a temporary control
	 * method object and placed on a global list. The methods on this list
	 * are executed below.
	 */
	acpi_ns_exec_module_code_list();

	/*
	 * Initialize the objects that remain uninitialized. This runs the
	 * executable AML that may be part of the declaration of these objects:
	 * operation_regions, buffer_fields, Buffers, and Packages.
	 */
	if (!(flags & ACPI_NO_OBJECT_INIT)) {
		ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
				  "[Init] Completing Initialization of ACPI Objects\n"));

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

	/*
	 * Initialize all device objects in the namespace. This runs the device
	 * _STA and _INI methods.
	 */
	if (!(flags & ACPI_NO_DEVICE_INIT)) {
		ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
				  "[Init] Initializing ACPI Devices\n"));

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

	/*
	 * Empty the caches (delete the cached objects) on the assumption that
	 * the table load filled them up more than they will be at runtime --
	 * thus wasting non-paged memory.
	 */
	status = acpi_purge_cached_objects();

	acpi_gbl_startup_flags |= ACPI_INITIALIZED_OK;
	return_ACPI_STATUS(status);
}

ACPI_EXPORT_SYMBOL(acpi_initialize_objects)

#endif
/*******************************************************************************
 *
 * FUNCTION:    acpi_terminate
 *
 * PARAMETERS:  None
 *
 * RETURN:      Status
 *
 * DESCRIPTION: Shutdown the ACPICA subsystem and release all resources.
 *
 ******************************************************************************/
acpi_status acpi_terminate(void)
{
	acpi_status status;

	ACPI_FUNCTION_TRACE(acpi_terminate);

	/* Just exit if subsystem is already shutdown */

	if (acpi_gbl_shutdown) {
		ACPI_ERROR((AE_INFO, "ACPI Subsystem is already terminated"));
		return_ACPI_STATUS(AE_OK);
	}

	/* Subsystem appears active, go ahead and shut it down */

	acpi_gbl_shutdown = TRUE;
	acpi_gbl_startup_flags = 0;
	ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Shutting down ACPI Subsystem\n"));

	/* Terminate the AML Debugger if present */

	ACPI_DEBUGGER_EXEC(acpi_gbl_db_terminate_threads = TRUE);

	/* Shutdown and free all resources */

	acpi_ut_subsystem_shutdown();

	/* Free the mutex objects */

	acpi_ut_mutex_terminate();

#ifdef ACPI_DEBUGGER

	/* Shut down the debugger */

	acpi_db_terminate();
#endif

	/* Now we can shutdown the OS-dependent layer */

	status = acpi_os_terminate();
	return_ACPI_STATUS(status);
}

ACPI_EXPORT_SYMBOL(acpi_terminate)

#ifndef ACPI_ASL_COMPILER
#ifdef ACPI_FUTURE_USAGE
/*******************************************************************************
 *
 * FUNCTION:    acpi_subsystem_status
 *
 * PARAMETERS:  None
 *
 * RETURN:      Status of the ACPI subsystem
 *
 * DESCRIPTION: Other drivers that use the ACPI subsystem should call this
 *              before making any other calls, to ensure the subsystem
 *              initialized successfully.
 *
 ******************************************************************************/
acpi_status acpi_subsystem_status(void)
{

	if (acpi_gbl_startup_flags & ACPI_INITIALIZED_OK) {
		return (AE_OK);
	} else {
		return (AE_ERROR);
	}
}

ACPI_EXPORT_SYMBOL(acpi_subsystem_status)

/*******************************************************************************
 *
 * FUNCTION:    acpi_get_system_info
 *
 * PARAMETERS:  out_buffer      - A buffer to receive the resources for the
 *                                device
 *
 * RETURN:      Status          - the status of the call
 *
 * DESCRIPTION: This function is called to get information about the current
 *              state of the ACPI subsystem.  It will return system information
 *              in the out_buffer.
 *
 *              If the function fails an appropriate status will be returned
 *              and the value of out_buffer is undefined.
 *
 ******************************************************************************/
acpi_status acpi_get_system_info(struct acpi_buffer * out_buffer)
{
	struct acpi_system_info *info_ptr;
	acpi_status status;

	ACPI_FUNCTION_TRACE(acpi_get_system_info);

	/* Parameter validation */

	status = acpi_ut_validate_buffer(out_buffer);
	if (ACPI_FAILURE(status)) {
		return_ACPI_STATUS(status);
	}

	/* Validate/Allocate/Clear caller buffer */

	status =
	    acpi_ut_initialize_buffer(out_buffer,
				      sizeof(struct acpi_system_info));
	if (ACPI_FAILURE(status)) {
		return_ACPI_STATUS(status);
	}

	/*
	 * Populate the return buffer
	 */
	info_ptr = (struct acpi_system_info *)out_buffer->pointer;

	info_ptr->acpi_ca_version = ACPI_CA_VERSION;

	/* System flags (ACPI capabilities) */

	info_ptr->flags = ACPI_SYS_MODE_ACPI;

	/* Timer resolution - 24 or 32 bits  */

	if (acpi_gbl_FADT.flags & ACPI_FADT_32BIT_TIMER) {
		info_ptr->timer_resolution = 24;
	} else {
		info_ptr->timer_resolution = 32;
	}

	/* Clear the reserved fields */

	info_ptr->reserved1 = 0;
	info_ptr->reserved2 = 0;

	/* Current debug levels */

	info_ptr->debug_layer = acpi_dbg_layer;
	info_ptr->debug_level = acpi_dbg_level;

	return_ACPI_STATUS(AE_OK);
}

ACPI_EXPORT_SYMBOL(acpi_get_system_info)

/*****************************************************************************
 *
 * FUNCTION:    acpi_install_initialization_handler
 *
 * PARAMETERS:  Handler             - Callback procedure
 *              Function            - Not (currently) used, see below
 *
 * RETURN:      Status
 *
 * DESCRIPTION: Install an initialization handler
 *
 * TBD: When a second function is added, must save the Function also.
 *
 ****************************************************************************/
acpi_status
acpi_install_initialization_handler(acpi_init_handler handler, u32 function)
{

	if (!handler) {
		return (AE_BAD_PARAMETER);
	}

	if (acpi_gbl_init_handler) {
		return (AE_ALREADY_EXISTS);
	}

	acpi_gbl_init_handler = handler;
	return AE_OK;
}

ACPI_EXPORT_SYMBOL(acpi_install_initialization_handler)
#endif				/*  ACPI_FUTURE_USAGE  */

/*****************************************************************************
 *
 * FUNCTION:    acpi_purge_cached_objects
 *
 * PARAMETERS:  None
 *
 * RETURN:      Status
 *
 * DESCRIPTION: Empty all caches (delete the cached objects)
 *
 ****************************************************************************/
acpi_status acpi_purge_cached_objects(void)
{
	ACPI_FUNCTION_TRACE(acpi_purge_cached_objects);

	(void)acpi_os_purge_cache(acpi_gbl_state_cache);
	(void)acpi_os_purge_cache(acpi_gbl_operand_cache);
	(void)acpi_os_purge_cache(acpi_gbl_ps_node_cache);
	(void)acpi_os_purge_cache(acpi_gbl_ps_node_ext_cache);
	return_ACPI_STATUS(AE_OK);
}

ACPI_EXPORT_SYMBOL(acpi_purge_cached_objects)

/*****************************************************************************
 *
 * FUNCTION:    acpi_install_interface
 *
 * PARAMETERS:  interface_name      - The interface to install
 *
 * RETURN:      Status
 *
 * DESCRIPTION: Install an _OSI interface to the global list
 *
 ****************************************************************************/
acpi_status acpi_install_interface(acpi_string interface_name)
{
	acpi_status status;
	struct acpi_interface_info *interface_info;

	/* Parameter validation */

	if (!interface_name || (ACPI_STRLEN(interface_name) == 0)) {
		return (AE_BAD_PARAMETER);
	}

	(void)acpi_os_acquire_mutex(acpi_gbl_osi_mutex, ACPI_WAIT_FOREVER);

	/* Check if the interface name is already in the global list */

	interface_info = acpi_ut_get_interface(interface_name);
	if (interface_info) {
		/*
		 * The interface already exists in the list. This is OK if the
		 * interface has been marked invalid -- just clear the bit.
		 */
		if (interface_info->flags & ACPI_OSI_INVALID) {
			interface_info->flags &= ~ACPI_OSI_INVALID;
			status = AE_OK;
		} else {
			status = AE_ALREADY_EXISTS;
		}
	} else {
		/* New interface name, install into the global list */

		status = acpi_ut_install_interface(interface_name);
	}

	acpi_os_release_mutex(acpi_gbl_osi_mutex);
	return (status);
}

ACPI_EXPORT_SYMBOL(acpi_install_interface)

/*****************************************************************************
 *
 * FUNCTION:    acpi_remove_interface
 *
 * PARAMETERS:  interface_name      - The interface to remove
 *
 * RETURN:      Status
 *
 * DESCRIPTION: Remove an _OSI interface from the global list
 *
 ****************************************************************************/
acpi_status acpi_remove_interface(acpi_string interface_name)
{
	acpi_status status;

	/* Parameter validation */

	if (!interface_name || (ACPI_STRLEN(interface_name) == 0)) {
		return (AE_BAD_PARAMETER);
	}

	(void)acpi_os_acquire_mutex(acpi_gbl_osi_mutex, ACPI_WAIT_FOREVER);

	status = acpi_ut_remove_interface(interface_name);

	acpi_os_release_mutex(acpi_gbl_osi_mutex);
	return (status);
}

ACPI_EXPORT_SYMBOL(acpi_remove_interface)

/*****************************************************************************
 *
 * FUNCTION:    acpi_install_interface_handler
 *
 * PARAMETERS:  Handler             - The _OSI interface handler to install
 *                                    NULL means "remove existing handler"
 *
 * RETURN:      Status
 *
 * DESCRIPTION: Install a handler for the predefined _OSI ACPI method.
 *              invoked during execution of the internal implementation of
 *              _OSI. A NULL handler simply removes any existing handler.
 *
 ****************************************************************************/
acpi_status acpi_install_interface_handler(acpi_interface_handler handler)
{
	acpi_status status = AE_OK;

	(void)acpi_os_acquire_mutex(acpi_gbl_osi_mutex, ACPI_WAIT_FOREVER);

	if (handler && acpi_gbl_interface_handler) {
		status = AE_ALREADY_EXISTS;
	} else {
		acpi_gbl_interface_handler = handler;
	}

	acpi_os_release_mutex(acpi_gbl_osi_mutex);
	return (status);
}

ACPI_EXPORT_SYMBOL(acpi_install_interface_handler)

/*****************************************************************************
 *
 * FUNCTION:    acpi_check_address_range
 *
 * PARAMETERS:  space_id            - Address space ID
 *              Address             - Start address
 *              Length              - Length
 *              Warn                - TRUE if warning on overlap desired
 *
 * RETURN:      Count of the number of conflicts detected.
 *
 * DESCRIPTION: Check if the input address range overlaps any of the
 *              ASL operation region address ranges.
 *
 ****************************************************************************/
u32
acpi_check_address_range(acpi_adr_space_type space_id,
			 acpi_physical_address address,
			 acpi_size length, u8 warn)
{
	u32 overlaps;
	acpi_status status;

	status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
	if (ACPI_FAILURE(status)) {
		return (0);
	}

	overlaps = acpi_ut_check_address_range(space_id, address,
					       (u32)length, warn);

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

ACPI_EXPORT_SYMBOL(acpi_check_address_range)
#endif				/* !ACPI_ASL_COMPILER */
OpenPOWER on IntegriCloud