drivers/acpi/acpica/hwsleep.c

   1
   2 /******************************************************************************
   3  *
   4  * Name: hwsleep.c - ACPI Hardware Sleep/Wake Interface
   5  *
   6  *****************************************************************************/
   7
   8 /*
   9  * Copyright (C) 2000 - 2008, Intel Corp.
  10  * All rights reserved.
  11  *
  12  * Redistribution and use in source and binary forms, with or without
  13  * modification, are permitted provided that the following conditions
  14  * are met:
  15  * 1. Redistributions of source code must retain the above copyright
  16  *    notice, this list of conditions, and the following disclaimer,
  17  *    without modification.
  18  * 2. Redistributions in binary form must reproduce at minimum a disclaimer
  19  *    substantially similar to the "NO WARRANTY" disclaimer below
  20  *    ("Disclaimer") and any redistribution must be conditioned upon
  21  *    including a substantially similar Disclaimer requirement for further
  22  *    binary redistribution.
  23  * 3. Neither the names of the above-listed copyright holders nor the names
  24  *    of any contributors may be used to endorse or promote products derived
  25  *    from this software without specific prior written permission.
  26  *
  27  * Alternatively, this software may be distributed under the terms of the
  28  * GNU General Public License ("GPL") version 2 as published by the Free
  29  * Software Foundation.
  30  *
  31  * NO WARRANTY
  32  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  33  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  34  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
  35  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  36  * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  37  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  38  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  39  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  40  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
  41  * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  42  * POSSIBILITY OF SUCH DAMAGES.
  43  */
  44
  45 #include <acpi/acpi.h>
  46 #include "accommon.h"
  47 #include "actables.h"
  48
  49 #define _COMPONENT          ACPI_HARDWARE
  50 ACPI_MODULE_NAME("hwsleep")
  51
  52 /*******************************************************************************
  53  *
  54  * FUNCTION:    acpi_set_firmware_waking_vector
  55  *
  56  * PARAMETERS:  physical_address    - 32-bit physical address of ACPI real mode
  57  *                                    entry point.
  58  *
  59  * RETURN:      Status
  60  *
  61  * DESCRIPTION: Sets the 32-bit firmware_waking_vector field of the FACS
  62  *
  63  ******************************************************************************/
  64 acpi_status
  65 acpi_set_firmware_waking_vector(u32 physical_address)
  66 {
  67         ACPI_FUNCTION_TRACE(acpi_set_firmware_waking_vector);
  68
  69
  70         /*
  71          * According to the ACPI specification 2.0c and later, the 64-bit
  72          * waking vector should be cleared and the 32-bit waking vector should
  73          * be used, unless we want the wake-up code to be called by the BIOS in
  74          * Protected Mode.  Some systems (for example HP dv5-1004nr) are known
  75          * to fail to resume if the 64-bit vector is used.
  76          */
  77
  78         /* Set the 32-bit vector */
  79
  80         acpi_gbl_FACS->firmware_waking_vector = physical_address;
  81
  82         /* Clear the 64-bit vector if it exists */
  83
  84         if ((acpi_gbl_FACS->length > 32) && (acpi_gbl_FACS->version >= 1)) {
  85                 acpi_gbl_FACS->xfirmware_waking_vector = 0;
  86         }
  87
  88         return_ACPI_STATUS(AE_OK);
  89 }
  90
  91 ACPI_EXPORT_SYMBOL(acpi_set_firmware_waking_vector)
  92
  93 /*******************************************************************************
  94  *
  95  * FUNCTION:    acpi_set_firmware_waking_vector64
  96  *
  97  * PARAMETERS:  physical_address    - 64-bit physical address of ACPI protected
  98  *                                    mode entry point.
  99  *
 100  * RETURN:      Status
 101  *
 102  * DESCRIPTION: Sets the 64-bit X_firmware_waking_vector field of the FACS, if
 103  *              it exists in the table.
 104  *
 105  ******************************************************************************/
 106 acpi_status
 107 acpi_set_firmware_waking_vector64(u64 physical_address)
 108 {
 109         ACPI_FUNCTION_TRACE(acpi_set_firmware_waking_vector64);
 110
 111
 112         /* Determine if the 64-bit vector actually exists */
 113
 114         if ((acpi_gbl_FACS->length <= 32) || (acpi_gbl_FACS->version < 1)) {
 115                 return_ACPI_STATUS(AE_NOT_EXIST);
 116         }
 117
 118         /* Clear 32-bit vector, set the 64-bit X_ vector */
 119
 120         acpi_gbl_FACS->firmware_waking_vector = 0;
 121         acpi_gbl_FACS->xfirmware_waking_vector = physical_address;
 122
 123         return_ACPI_STATUS(AE_OK);
 124 }
 125
 126 ACPI_EXPORT_SYMBOL(acpi_set_firmware_waking_vector64)
 127
 128 /*******************************************************************************
 129  *
 130  * FUNCTION:    acpi_enter_sleep_state_prep
 131  *
 132  * PARAMETERS:  sleep_state         - Which sleep state to enter
 133  *
 134  * RETURN:      Status
 135  *
 136  * DESCRIPTION: Prepare to enter a system sleep state (see ACPI 2.0 spec p 231)
 137  *              This function must execute with interrupts enabled.
 138  *              We break sleeping into 2 stages so that OSPM can handle
 139  *              various OS-specific tasks between the two steps.
 140  *
 141  ******************************************************************************/
 142 acpi_status acpi_enter_sleep_state_prep(u8 sleep_state)
 143 {
 144         acpi_status status;
 145         struct acpi_object_list arg_list;
 146         union acpi_object arg;
 147
 148         ACPI_FUNCTION_TRACE(acpi_enter_sleep_state_prep);
 149
 150         /* _PSW methods could be run here to enable wake-on keyboard, LAN, etc. */
 151
 152         status = acpi_get_sleep_type_data(sleep_state,
 153                                           &acpi_gbl_sleep_type_a,
 154                                           &acpi_gbl_sleep_type_b);
 155         if (ACPI_FAILURE(status)) {
 156                 return_ACPI_STATUS(status);
 157         }
 158
 159         /* Setup parameter object */
 160
 161         arg_list.count = 1;
 162         arg_list.pointer = &arg;
 163
 164         arg.type = ACPI_TYPE_INTEGER;
 165         arg.integer.value = sleep_state;
 166
 167         /* Run the _PTS method */
 168
 169         status = acpi_evaluate_object(NULL, METHOD_NAME__PTS, &arg_list, NULL);
 170         if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) {
 171                 return_ACPI_STATUS(status);
 172         }
 173
 174         /* Setup the argument to _SST */
 175
 176         switch (sleep_state) {
 177         case ACPI_STATE_S0:
 178                 arg.integer.value = ACPI_SST_WORKING;
 179                 break;
 180
 181         case ACPI_STATE_S1:
 182         case ACPI_STATE_S2:
 183         case ACPI_STATE_S3:
 184                 arg.integer.value = ACPI_SST_SLEEPING;
 185                 break;
 186
 187         case ACPI_STATE_S4:
 188                 arg.integer.value = ACPI_SST_SLEEP_CONTEXT;
 189                 break;
 190
 191         default:
 192                 arg.integer.value = ACPI_SST_INDICATOR_OFF;     /* Default is off */
 193                 break;
 194         }
 195
 196         /*
 197          * Set the system indicators to show the desired sleep state.
 198          * _SST is an optional method (return no error if not found)
 199          */
 200         status = acpi_evaluate_object(NULL, METHOD_NAME__SST, &arg_list, NULL);
 201         if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) {
 202                 ACPI_EXCEPTION((AE_INFO, status,
 203                                 "While executing method _SST"));
 204         }
 205
 206         return_ACPI_STATUS(AE_OK);
 207 }
 208
 209 ACPI_EXPORT_SYMBOL(acpi_enter_sleep_state_prep)
 210
 211 /*******************************************************************************
 212  *
 213  * FUNCTION:    acpi_enter_sleep_state
 214  *
 215  * PARAMETERS:  sleep_state         - Which sleep state to enter
 216  *
 217  * RETURN:      Status
 218  *
 219  * DESCRIPTION: Enter a system sleep state (see ACPI 2.0 spec p 231)
 220  *              THIS FUNCTION MUST BE CALLED WITH INTERRUPTS DISABLED
 221  *
 222  ******************************************************************************/
 223 acpi_status asmlinkage acpi_enter_sleep_state(u8 sleep_state)
 224 {
 225         u32 pm1a_control;
 226         u32 pm1b_control;
 227         struct acpi_bit_register_info *sleep_type_reg_info;
 228         struct acpi_bit_register_info *sleep_enable_reg_info;
 229         u32 in_value;
 230         struct acpi_object_list arg_list;
 231         union acpi_object arg;
 232         acpi_status status;
 233
 234         ACPI_FUNCTION_TRACE(acpi_enter_sleep_state);
 235
 236         if ((acpi_gbl_sleep_type_a > ACPI_SLEEP_TYPE_MAX) ||
 237             (acpi_gbl_sleep_type_b > ACPI_SLEEP_TYPE_MAX)) {
 238                 ACPI_ERROR((AE_INFO, "Sleep values out of range: A=%X B=%X",
 239                             acpi_gbl_sleep_type_a, acpi_gbl_sleep_type_b));
 240                 return_ACPI_STATUS(AE_AML_OPERAND_VALUE);
 241         }
 242
 243         sleep_type_reg_info =
 244             acpi_hw_get_bit_register_info(ACPI_BITREG_SLEEP_TYPE);
 245         sleep_enable_reg_info =
 246             acpi_hw_get_bit_register_info(ACPI_BITREG_SLEEP_ENABLE);
 247
 248         /* Clear wake status */
 249
 250         status = acpi_set_register(ACPI_BITREG_WAKE_STATUS, 1);
 251         if (ACPI_FAILURE(status)) {
 252                 return_ACPI_STATUS(status);
 253         }
 254
 255         /* Clear all fixed and general purpose status bits */
 256
 257         status = acpi_hw_clear_acpi_status();
 258         if (ACPI_FAILURE(status)) {
 259                 return_ACPI_STATUS(status);
 260         }
 261
 262         /*
 263          * 1) Disable/Clear all GPEs
 264          * 2) Enable all wakeup GPEs
 265          */
 266         status = acpi_hw_disable_all_gpes();
 267         if (ACPI_FAILURE(status)) {
 268                 return_ACPI_STATUS(status);
 269         }
 270         acpi_gbl_system_awake_and_running = FALSE;
 271
 272         status = acpi_hw_enable_all_wakeup_gpes();
 273         if (ACPI_FAILURE(status)) {
 274                 return_ACPI_STATUS(status);
 275         }
 276
 277         /* Execute the _GTS method */
 278
 279         arg_list.count = 1;
 280         arg_list.pointer = &arg;
 281         arg.type = ACPI_TYPE_INTEGER;
 282         arg.integer.value = sleep_state;
 283
 284         status = acpi_evaluate_object(NULL, METHOD_NAME__GTS, &arg_list, NULL);
 285         if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) {
 286                 return_ACPI_STATUS(status);
 287         }
 288
 289         /* Get current value of PM1A control */
 290
 291         status = acpi_hw_register_read(ACPI_REGISTER_PM1_CONTROL,
 292                                        &pm1a_control);
 293         if (ACPI_FAILURE(status)) {
 294                 return_ACPI_STATUS(status);
 295         }
 296         ACPI_DEBUG_PRINT((ACPI_DB_INIT,
 297                           "Entering sleep state [S%d]\n", sleep_state));
 298
 299         /* Clear the SLP_EN and SLP_TYP fields */
 300
 301         pm1a_control &= ~(sleep_type_reg_info->access_bit_mask |
 302                           sleep_enable_reg_info->access_bit_mask);
 303         pm1b_control = pm1a_control;
 304
 305         /* Insert the SLP_TYP bits */
 306
 307         pm1a_control |=
 308             (acpi_gbl_sleep_type_a << sleep_type_reg_info->bit_position);
 309         pm1b_control |=
 310             (acpi_gbl_sleep_type_b << sleep_type_reg_info->bit_position);
 311
 312         /*
 313          * We split the writes of SLP_TYP and SLP_EN to workaround
 314          * poorly implemented hardware.
 315          */
 316
 317         /* Write #1: write the SLP_TYP data to the PM1 Control registers */
 318
 319         status = acpi_hw_write_pm1_control(pm1a_control, pm1b_control);
 320         if (ACPI_FAILURE(status)) {
 321                 return_ACPI_STATUS(status);
 322         }
 323
 324         /* Insert the sleep enable (SLP_EN) bit */
 325
 326         pm1a_control |= sleep_enable_reg_info->access_bit_mask;
 327         pm1b_control |= sleep_enable_reg_info->access_bit_mask;
 328
 329         /* Flush caches, as per ACPI specification */
 330
 331         ACPI_FLUSH_CPU_CACHE();
 332
 333         /* Write #2: Write both SLP_TYP + SLP_EN */
 334
 335         status = acpi_hw_write_pm1_control(pm1a_control, pm1b_control);
 336         if (ACPI_FAILURE(status)) {
 337                 return_ACPI_STATUS(status);
 338         }
 339
 340         if (sleep_state > ACPI_STATE_S3) {
 341                 /*
 342                  * We wanted to sleep > S3, but it didn't happen (by virtue of the
 343                  * fact that we are still executing!)
 344                  *
 345                  * Wait ten seconds, then try again. This is to get S4/S5 to work on
 346                  * all machines.
 347                  *
 348                  * We wait so long to allow chipsets that poll this reg very slowly to
 349                  * still read the right value. Ideally, this block would go
 350                  * away entirely.
 351                  */
 352                 acpi_os_stall(10000000);
 353
 354                 status = acpi_hw_register_write(ACPI_REGISTER_PM1_CONTROL,
 355                                                 sleep_enable_reg_info->
 356                                                 access_bit_mask);
 357                 if (ACPI_FAILURE(status)) {
 358                         return_ACPI_STATUS(status);
 359                 }
 360         }
 361
 362         /* Wait until we enter sleep state */
 363
 364         do {
 365                 status = acpi_get_register_unlocked(ACPI_BITREG_WAKE_STATUS,
 366                                                     &in_value);
 367                 if (ACPI_FAILURE(status)) {
 368                         return_ACPI_STATUS(status);
 369                 }
 370
 371                 /* Spin until we wake */
 372
 373         } while (!in_value);
 374
 375         return_ACPI_STATUS(AE_OK);
 376 }
 377
 378 ACPI_EXPORT_SYMBOL(acpi_enter_sleep_state)
 379
 380 /*******************************************************************************
 381  *
 382  * FUNCTION:    acpi_enter_sleep_state_s4bios
 383  *
 384  * PARAMETERS:  None
 385  *
 386  * RETURN:      Status
 387  *
 388  * DESCRIPTION: Perform a S4 bios request.
 389  *              THIS FUNCTION MUST BE CALLED WITH INTERRUPTS DISABLED
 390  *
 391  ******************************************************************************/
 392 acpi_status asmlinkage acpi_enter_sleep_state_s4bios(void)
 393 {
 394         u32 in_value;
 395         acpi_status status;
 396
 397         ACPI_FUNCTION_TRACE(acpi_enter_sleep_state_s4bios);
 398
 399         status = acpi_set_register(ACPI_BITREG_WAKE_STATUS, 1);
 400         if (ACPI_FAILURE(status)) {
 401                 return_ACPI_STATUS(status);
 402         }
 403
 404         status = acpi_hw_clear_acpi_status();
 405         if (ACPI_FAILURE(status)) {
 406                 return_ACPI_STATUS(status);
 407         }
 408
 409         /*
 410          * 1) Disable/Clear all GPEs
 411          * 2) Enable all wakeup GPEs
 412          */
 413         status = acpi_hw_disable_all_gpes();
 414         if (ACPI_FAILURE(status)) {
 415                 return_ACPI_STATUS(status);
 416         }
 417         acpi_gbl_system_awake_and_running = FALSE;
 418
 419         status = acpi_hw_enable_all_wakeup_gpes();
 420         if (ACPI_FAILURE(status)) {
 421                 return_ACPI_STATUS(status);
 422         }
 423
 424         ACPI_FLUSH_CPU_CACHE();
 425
 426         status = acpi_os_write_port(acpi_gbl_FADT.smi_command,
 427                                     (u32) acpi_gbl_FADT.S4bios_request, 8);
 428
 429         do {
 430                 acpi_os_stall(1000);
 431                 status = acpi_get_register(ACPI_BITREG_WAKE_STATUS, &in_value);
 432                 if (ACPI_FAILURE(status)) {
 433                         return_ACPI_STATUS(status);
 434                 }
 435         } while (!in_value);
 436
 437         return_ACPI_STATUS(AE_OK);
 438 }
 439
 440 ACPI_EXPORT_SYMBOL(acpi_enter_sleep_state_s4bios)
 441
 442 /*******************************************************************************
 443  *
 444  * FUNCTION:    acpi_leave_sleep_state_prep
 445  *
 446  * PARAMETERS:  sleep_state         - Which sleep state we are exiting
 447  *
 448  * RETURN:      Status
 449  *
 450  * DESCRIPTION: Perform the first state of OS-independent ACPI cleanup after a
 451  *              sleep.
 452  *              Called with interrupts DISABLED.
 453  *
 454  ******************************************************************************/
 455 acpi_status acpi_leave_sleep_state_prep(u8 sleep_state)
 456 {
 457         struct acpi_object_list arg_list;
 458         union acpi_object arg;
 459         acpi_status status;
 460         struct acpi_bit_register_info *sleep_type_reg_info;
 461         struct acpi_bit_register_info *sleep_enable_reg_info;
 462         u32 pm1a_control;
 463         u32 pm1b_control;
 464
 465         ACPI_FUNCTION_TRACE(acpi_leave_sleep_state_prep);
 466
 467         /*
 468          * Set SLP_TYPE and SLP_EN to state S0.
 469          * This is unclear from the ACPI Spec, but it is required
 470          * by some machines.
 471          */
 472         status = acpi_get_sleep_type_data(ACPI_STATE_S0,
 473                                           &acpi_gbl_sleep_type_a,
 474                                           &acpi_gbl_sleep_type_b);
 475         if (ACPI_SUCCESS(status)) {
 476                 sleep_type_reg_info =
 477                     acpi_hw_get_bit_register_info(ACPI_BITREG_SLEEP_TYPE);
 478                 sleep_enable_reg_info =
 479                     acpi_hw_get_bit_register_info(ACPI_BITREG_SLEEP_ENABLE);
 480
 481                 /* Get current value of PM1A control */
 482
 483                 status = acpi_hw_register_read(ACPI_REGISTER_PM1_CONTROL,
 484                                                &pm1a_control);
 485                 if (ACPI_SUCCESS(status)) {
 486
 487                         /* Clear the SLP_EN and SLP_TYP fields */
 488
 489                         pm1a_control &= ~(sleep_type_reg_info->access_bit_mask |
 490                                           sleep_enable_reg_info->
 491                                           access_bit_mask);
 492                         pm1b_control = pm1a_control;
 493
 494                         /* Insert the SLP_TYP bits */
 495
 496                         pm1a_control |=
 497                             (acpi_gbl_sleep_type_a << sleep_type_reg_info->
 498                              bit_position);
 499                         pm1b_control |=
 500                             (acpi_gbl_sleep_type_b << sleep_type_reg_info->
 501                              bit_position);
 502
 503                         /* Write the control registers and ignore any errors */
 504
 505                         (void)acpi_hw_write_pm1_control(pm1a_control,
 506                                                         pm1b_control);
 507                 }
 508         }
 509
 510         /* Execute the _BFS method */
 511
 512         arg_list.count = 1;
 513         arg_list.pointer = &arg;
 514         arg.type = ACPI_TYPE_INTEGER;
 515         arg.integer.value = sleep_state;
 516
 517         status = acpi_evaluate_object(NULL, METHOD_NAME__BFS, &arg_list, NULL);
 518         if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) {
 519                 ACPI_EXCEPTION((AE_INFO, status, "During Method _BFS"));
 520         }
 521
 522         return_ACPI_STATUS(status);
 523 }
 524
 525 /*******************************************************************************
 526  *
 527  * FUNCTION:    acpi_leave_sleep_state
 528  *
 529  * PARAMETERS:  sleep_state         - Which sleep state we just exited
 530  *
 531  * RETURN:      Status
 532  *
 533  * DESCRIPTION: Perform OS-independent ACPI cleanup after a sleep
 534  *              Called with interrupts ENABLED.
 535  *
 536  ******************************************************************************/
 537 acpi_status acpi_leave_sleep_state(u8 sleep_state)
 538 {
 539         struct acpi_object_list arg_list;
 540         union acpi_object arg;
 541         acpi_status status;
 542
 543         ACPI_FUNCTION_TRACE(acpi_leave_sleep_state);
 544
 545         /* Ensure enter_sleep_state_prep -> enter_sleep_state ordering */
 546
 547         acpi_gbl_sleep_type_a = ACPI_SLEEP_TYPE_INVALID;
 548
 549         /* Setup parameter object */
 550
 551         arg_list.count = 1;
 552         arg_list.pointer = &arg;
 553         arg.type = ACPI_TYPE_INTEGER;
 554
 555         /* Ignore any errors from these methods */
 556
 557         arg.integer.value = ACPI_SST_WAKING;
 558         status = acpi_evaluate_object(NULL, METHOD_NAME__SST, &arg_list, NULL);
 559         if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) {
 560                 ACPI_EXCEPTION((AE_INFO, status, "During Method _SST"));
 561         }
 562
 563         /*
 564          * GPEs must be enabled before _WAK is called as GPEs
 565          * might get fired there
 566          *
 567          * Restore the GPEs:
 568          * 1) Disable/Clear all GPEs
 569          * 2) Enable all runtime GPEs
 570          */
 571         status = acpi_hw_disable_all_gpes();
 572         if (ACPI_FAILURE(status)) {
 573                 return_ACPI_STATUS(status);
 574         }
 575         status = acpi_hw_enable_all_runtime_gpes();
 576         if (ACPI_FAILURE(status)) {
 577                 return_ACPI_STATUS(status);
 578         }
 579
 580         arg.integer.value = sleep_state;
 581         status = acpi_evaluate_object(NULL, METHOD_NAME__WAK, &arg_list, NULL);
 582         if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) {
 583                 ACPI_EXCEPTION((AE_INFO, status, "During Method _WAK"));
 584         }
 585         /* TBD: _WAK "sometimes" returns stuff - do we want to look at it? */
 586
 587         /*
 588          * Some BIOSes assume that WAK_STS will be cleared on resume and use
 589          * it to determine whether the system is rebooting or resuming. Clear
 590          * it for compatibility.
 591          */
 592         acpi_set_register(ACPI_BITREG_WAKE_STATUS, 1);
 593
 594         acpi_gbl_system_awake_and_running = TRUE;
 595
 596         /* Enable power button */
 597
 598         (void)
 599             acpi_set_register(acpi_gbl_fixed_event_info
 600                               [ACPI_EVENT_POWER_BUTTON].enable_register_id, 1);
 601
 602         (void)
 603             acpi_set_register(acpi_gbl_fixed_event_info
 604                               [ACPI_EVENT_POWER_BUTTON].status_register_id, 1);
 605
 606         arg.integer.value = ACPI_SST_WORKING;
 607         status = acpi_evaluate_object(NULL, METHOD_NAME__SST, &arg_list, NULL);
 608         if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) {
 609                 ACPI_EXCEPTION((AE_INFO, status, "During Method _SST"));
 610         }
 611
 612         return_ACPI_STATUS(status);
 613 }
 614
 615 ACPI_EXPORT_SYMBOL(acpi_leave_sleep_state)