nsaccess.c revision 80062
1/******************************************************************************* 2 * 3 * Module Name: nsaccess - Top-level functions for accessing ACPI namespace 4 * $Revision: 128 $ 5 * 6 ******************************************************************************/ 7 8/****************************************************************************** 9 * 10 * 1. Copyright Notice 11 * 12 * Some or all of this work - Copyright (c) 1999, 2000, 2001, Intel Corp. 13 * All rights reserved. 14 * 15 * 2. License 16 * 17 * 2.1. This is your license from Intel Corp. under its intellectual property 18 * rights. You may have additional license terms from the party that provided 19 * you this software, covering your right to use that party's intellectual 20 * property rights. 21 * 22 * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a 23 * copy of the source code appearing in this file ("Covered Code") an 24 * irrevocable, perpetual, worldwide license under Intel's copyrights in the 25 * base code distributed originally by Intel ("Original Intel Code") to copy, 26 * make derivatives, distribute, use and display any portion of the Covered 27 * Code in any form, with the right to sublicense such rights; and 28 * 29 * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent 30 * license (with the right to sublicense), under only those claims of Intel 31 * patents that are infringed by the Original Intel Code, to make, use, sell, 32 * offer to sell, and import the Covered Code and derivative works thereof 33 * solely to the minimum extent necessary to exercise the above copyright 34 * license, and in no event shall the patent license extend to any additions 35 * to or modifications of the Original Intel Code. No other license or right 36 * is granted directly or by implication, estoppel or otherwise; 37 * 38 * The above copyright and patent license is granted only if the following 39 * conditions are met: 40 * 41 * 3. Conditions 42 * 43 * 3.1. Redistribution of Source with Rights to Further Distribute Source. 44 * Redistribution of source code of any substantial portion of the Covered 45 * Code or modification with rights to further distribute source must include 46 * the above Copyright Notice, the above License, this list of Conditions, 47 * and the following Disclaimer and Export Compliance provision. In addition, 48 * Licensee must cause all Covered Code to which Licensee contributes to 49 * contain a file documenting the changes Licensee made to create that Covered 50 * Code and the date of any change. Licensee must include in that file the 51 * documentation of any changes made by any predecessor Licensee. Licensee 52 * must include a prominent statement that the modification is derived, 53 * directly or indirectly, from Original Intel Code. 54 * 55 * 3.2. Redistribution of Source with no Rights to Further Distribute Source. 56 * Redistribution of source code of any substantial portion of the Covered 57 * Code or modification without rights to further distribute source must 58 * include the following Disclaimer and Export Compliance provision in the 59 * documentation and/or other materials provided with distribution. In 60 * addition, Licensee may not authorize further sublicense of source of any 61 * portion of the Covered Code, and must include terms to the effect that the 62 * license from Licensee to its licensee is limited to the intellectual 63 * property embodied in the software Licensee provides to its licensee, and 64 * not to intellectual property embodied in modifications its licensee may 65 * make. 66 * 67 * 3.3. Redistribution of Executable. Redistribution in executable form of any 68 * substantial portion of the Covered Code or modification must reproduce the 69 * above Copyright Notice, and the following Disclaimer and Export Compliance 70 * provision in the documentation and/or other materials provided with the 71 * distribution. 72 * 73 * 3.4. Intel retains all right, title, and interest in and to the Original 74 * Intel Code. 75 * 76 * 3.5. Neither the name Intel nor any other trademark owned or controlled by 77 * Intel shall be used in advertising or otherwise to promote the sale, use or 78 * other dealings in products derived from or relating to the Covered Code 79 * without prior written authorization from Intel. 80 * 81 * 4. Disclaimer and Export Compliance 82 * 83 * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED 84 * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE 85 * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE, 86 * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY 87 * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY 88 * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A 89 * PARTICULAR PURPOSE. 90 * 91 * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES 92 * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR 93 * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT, 94 * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY 95 * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL 96 * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS 97 * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY 98 * LIMITED REMEDY. 99 * 100 * 4.3. Licensee shall not export, either directly or indirectly, any of this 101 * software or system incorporating such software without first obtaining any 102 * required license or other approval from the U. S. Department of Commerce or 103 * any other agency or department of the United States Government. In the 104 * event Licensee exports any such software from the United States or 105 * re-exports any such software from a foreign destination, Licensee shall 106 * ensure that the distribution and export/re-export of the software is in 107 * compliance with all laws, regulations, orders, or other restrictions of the 108 * U.S. Export Administration Regulations. Licensee agrees that neither it nor 109 * any of its subsidiaries will export/re-export any technical data, process, 110 * software, or service, directly or indirectly, to any country for which the 111 * United States government or any agency thereof requires an export license, 112 * other governmental approval, or letter of assurance, without first obtaining 113 * such license, approval or letter. 114 * 115 *****************************************************************************/ 116 117#define __NSACCESS_C__ 118 119#include "acpi.h" 120#include "amlcode.h" 121#include "acinterp.h" 122#include "acnamesp.h" 123#include "acdispat.h" 124 125 126#define _COMPONENT ACPI_NAMESPACE 127 MODULE_NAME ("nsaccess") 128 129 130/******************************************************************************* 131 * 132 * FUNCTION: AcpiNsRootInitialize 133 * 134 * PARAMETERS: None 135 * 136 * RETURN: Status 137 * 138 * DESCRIPTION: Allocate and initialize the default root named objects 139 * 140 * MUTEX: Locks namespace for entire execution 141 * 142 ******************************************************************************/ 143 144ACPI_STATUS 145AcpiNsRootInitialize (void) 146{ 147 ACPI_STATUS Status = AE_OK; 148 PREDEFINED_NAMES *InitVal = NULL; 149 ACPI_NAMESPACE_NODE *NewNode; 150 ACPI_OPERAND_OBJECT *ObjDesc; 151 152 153 FUNCTION_TRACE ("NsRootInitialize"); 154 155 156 AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE); 157 158 /* 159 * The global root ptr is initially NULL, so a non-NULL value indicates 160 * that AcpiNsRootInitialize() has already been called; just return. 161 */ 162 163 if (AcpiGbl_RootNode) 164 { 165 Status = AE_OK; 166 goto UnlockAndExit; 167 } 168 169 170 /* 171 * Tell the rest of the subsystem that the root is initialized 172 * (This is OK because the namespace is locked) 173 */ 174 175 AcpiGbl_RootNode = &AcpiGbl_RootNodeStruct; 176 177 178 /* Enter the pre-defined names in the name table */ 179 180 DEBUG_PRINTP (ACPI_INFO, ("Entering predefined entries into namespace\n")); 181 182 for (InitVal = AcpiGbl_PreDefinedNames; InitVal->Name; InitVal++) 183 { 184 Status = AcpiNsLookup (NULL, InitVal->Name, InitVal->Type, 185 IMODE_LOAD_PASS2, NS_NO_UPSEARCH, 186 NULL, &NewNode); 187 188 if (ACPI_FAILURE (Status) || (!NewNode)) /* Must be on same line for code converter */ 189 { 190 DEBUG_PRINTP (ACPI_ERROR, 191 ("Could not create predefined name %s, %s\n", 192 InitVal->Name, AcpiFormatException (Status))); 193 } 194 195 /* 196 * Name entered successfully. 197 * If entry in PreDefinedNames[] specifies an 198 * initial value, create the initial value. 199 */ 200 201 if (InitVal->Val) 202 { 203 /* 204 * Entry requests an initial value, allocate a 205 * descriptor for it. 206 */ 207 208 ObjDesc = AcpiUtCreateInternalObject (InitVal->Type); 209 if (!ObjDesc) 210 { 211 Status = AE_NO_MEMORY; 212 goto UnlockAndExit; 213 } 214 215 /* 216 * Convert value string from table entry to 217 * internal representation. Only types actually 218 * used for initial values are implemented here. 219 */ 220 221 switch (InitVal->Type) 222 { 223 224 case ACPI_TYPE_INTEGER: 225 226 ObjDesc->Integer.Value = 227 (ACPI_INTEGER) STRTOUL (InitVal->Val, NULL, 10); 228 break; 229 230 231 case ACPI_TYPE_STRING: 232 233 ObjDesc->String.Length = STRLEN (InitVal->Val); 234 235 /* 236 * Allocate a buffer for the string. All 237 * String.Pointers must be allocated buffers! 238 * (makes deletion simpler) 239 */ 240 ObjDesc->String.Pointer = ACPI_MEM_ALLOCATE ( 241 (ObjDesc->String.Length + 1)); 242 if (!ObjDesc->String.Pointer) 243 { 244 AcpiUtRemoveReference (ObjDesc); 245 Status = AE_NO_MEMORY; 246 goto UnlockAndExit; 247 } 248 249 STRCPY (ObjDesc->String.Pointer, InitVal->Val); 250 break; 251 252 253 case ACPI_TYPE_MUTEX: 254 255 ObjDesc->Mutex.SyncLevel = 256 (UINT16) STRTOUL (InitVal->Val, NULL, 10); 257 258 if (STRCMP (InitVal->Name, "_GL_") == 0) 259 { 260 /* 261 * Create a counting semaphore for the 262 * global lock 263 */ 264 Status = AcpiOsCreateSemaphore (ACPI_NO_UNIT_LIMIT, 265 1, &ObjDesc->Mutex.Semaphore); 266 267 if (ACPI_FAILURE (Status)) 268 { 269 goto UnlockAndExit; 270 } 271 /* 272 * We just created the mutex for the 273 * global lock, save it 274 */ 275 276 AcpiGbl_GlobalLockSemaphore = ObjDesc->Mutex.Semaphore; 277 } 278 279 else 280 { 281 /* Create a mutex */ 282 283 Status = AcpiOsCreateSemaphore (1, 1, 284 &ObjDesc->Mutex.Semaphore); 285 286 if (ACPI_FAILURE (Status)) 287 { 288 goto UnlockAndExit; 289 } 290 } 291 break; 292 293 294 default: 295 REPORT_ERROR (("Unsupported initial type value %X\n", 296 InitVal->Type)); 297 AcpiUtRemoveReference (ObjDesc); 298 ObjDesc = NULL; 299 continue; 300 } 301 302 /* Store pointer to value descriptor in the Node */ 303 304 AcpiNsAttachObject (NewNode, ObjDesc, ObjDesc->Common.Type); 305 } 306 } 307 308 309UnlockAndExit: 310 AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE); 311 return_ACPI_STATUS (Status); 312} 313 314 315/******************************************************************************* 316 * 317 * FUNCTION: AcpiNsLookup 318 * 319 * PARAMETERS: PrefixNode - Search scope if name is not fully qualified 320 * Pathname - Search pathname, in internal format 321 * (as represented in the AML stream) 322 * Type - Type associated with name 323 * InterpreterMode - IMODE_LOAD_PASS2 => add name if not found 324 * Flags - Flags describing the search restrictions 325 * WalkState - Current state of the walk 326 * ReturnNode - Where the Node is placed (if found 327 * or created successfully) 328 * 329 * RETURN: Status 330 * 331 * DESCRIPTION: Find or enter the passed name in the name space. 332 * Log an error if name not found in Exec mode. 333 * 334 * MUTEX: Assumes namespace is locked. 335 * 336 ******************************************************************************/ 337 338ACPI_STATUS 339AcpiNsLookup ( 340 ACPI_GENERIC_STATE *ScopeInfo, 341 NATIVE_CHAR *Pathname, 342 ACPI_OBJECT_TYPE8 Type, 343 OPERATING_MODE InterpreterMode, 344 UINT32 Flags, 345 ACPI_WALK_STATE *WalkState, 346 ACPI_NAMESPACE_NODE **ReturnNode) 347{ 348 ACPI_STATUS Status; 349 ACPI_NAMESPACE_NODE *PrefixNode; 350 ACPI_NAMESPACE_NODE *CurrentNode = NULL; 351 ACPI_NAMESPACE_NODE *ScopeToPush = NULL; 352 ACPI_NAMESPACE_NODE *ThisNode = NULL; 353 UINT32 NumSegments; 354 ACPI_NAME SimpleName; 355 BOOLEAN NullNamePath = FALSE; 356 ACPI_OBJECT_TYPE8 TypeToCheckFor; 357 ACPI_OBJECT_TYPE8 ThisSearchType; 358 UINT32 LocalFlags = Flags & ~NS_ERROR_IF_FOUND; 359 360 DEBUG_EXEC (UINT32 i;) 361 362 363 FUNCTION_TRACE ("NsLookup"); 364 365 366 if (!ReturnNode) 367 { 368 return_ACPI_STATUS (AE_BAD_PARAMETER); 369 } 370 371 372 AcpiGbl_NsLookupCount++; 373 374 *ReturnNode = ENTRY_NOT_FOUND; 375 376 377 if (!AcpiGbl_RootNode) 378 { 379 return (AE_NO_NAMESPACE); 380 } 381 382 /* 383 * Get the prefix scope. 384 * A null scope means use the root scope 385 */ 386 387 if ((!ScopeInfo) || 388 (!ScopeInfo->Scope.Node)) 389 { 390 DEBUG_PRINTP (TRACE_NAMES, ("Null scope prefix, using root node (%p)\n", 391 AcpiGbl_RootNode)); 392 393 PrefixNode = AcpiGbl_RootNode; 394 } 395 else 396 { 397 PrefixNode = ScopeInfo->Scope.Node; 398 } 399 400 401 /* 402 * This check is explicitly split to relax the TypeToCheckFor 403 * conditions for BankFieldDefn. Originally, both BankFieldDefn and 404 * DefFieldDefn caused TypeToCheckFor to be set to ACPI_TYPE_REGION, 405 * but the BankFieldDefn may also check for a Field definition as well 406 * as an OperationRegion. 407 */ 408 409 if (INTERNAL_TYPE_FIELD_DEFN == Type) 410 { 411 /* DefFieldDefn defines fields in a Region */ 412 413 TypeToCheckFor = ACPI_TYPE_REGION; 414 } 415 416 else if (INTERNAL_TYPE_BANK_FIELD_DEFN == Type) 417 { 418 /* BankFieldDefn defines data fields in a Field Object */ 419 420 TypeToCheckFor = ACPI_TYPE_ANY; 421 } 422 423 else 424 { 425 TypeToCheckFor = Type; 426 } 427 428 429 /* TBD: [Restructure] - Move the pathname stuff into a new procedure */ 430 431 /* Examine the name pointer */ 432 433 if (!Pathname) 434 { 435 /* 8-12-98 ASL Grammar Update supports null NamePath */ 436 437 NullNamePath = TRUE; 438 NumSegments = 0; 439 ThisNode = AcpiGbl_RootNode; 440 441 DEBUG_PRINTP (TRACE_NAMES, 442 ("Null Pathname (Zero segments), Flags=%x\n", Flags)); 443 } 444 445 else 446 { 447 /* 448 * Valid name pointer (Internal name format) 449 * 450 * Check for prefixes. As represented in the AML stream, a 451 * Pathname consists of an optional scope prefix followed by 452 * a segment part. 453 * 454 * If present, the scope prefix is either a RootPrefix (in 455 * which case the name is fully qualified), or zero or more 456 * ParentPrefixes (in which case the name's scope is relative 457 * to the current scope). 458 * 459 * The segment part consists of either: 460 * - A single 4-byte name segment, or 461 * - A DualNamePrefix followed by two 4-byte name segments, or 462 * - A MultiNamePrefixOp, followed by a byte indicating the 463 * number of segments and the segments themselves. 464 */ 465 466 if (*Pathname == AML_ROOT_PREFIX) 467 { 468 /* Pathname is fully qualified, look in root name table */ 469 470 CurrentNode = AcpiGbl_RootNode; 471 472 /* point to segment part */ 473 474 Pathname++; 475 476 DEBUG_PRINTP (TRACE_NAMES, ("Searching from root [%p]\n", 477 CurrentNode)); 478 479 /* Direct reference to root, "\" */ 480 481 if (!(*Pathname)) 482 { 483 ThisNode = AcpiGbl_RootNode; 484 goto CheckForNewScopeAndExit; 485 } 486 } 487 488 else 489 { 490 /* Pathname is relative to current scope, start there */ 491 492 CurrentNode = PrefixNode; 493 494 DEBUG_PRINTP (TRACE_NAMES, ("Searching relative to pfx scope [%p]\n", 495 PrefixNode)); 496 497 /* 498 * Handle up-prefix (carat). More than one prefix 499 * is supported 500 */ 501 502 while (*Pathname == AML_PARENT_PREFIX) 503 { 504 /* Point to segment part or next ParentPrefix */ 505 506 Pathname++; 507 508 /* Backup to the parent's scope */ 509 510 ThisNode = AcpiNsGetParentObject (CurrentNode); 511 if (!ThisNode) 512 { 513 /* Current scope has no parent scope */ 514 515 REPORT_ERROR ( 516 ("Too many parent prefixes (^) - reached root\n")); 517 return_ACPI_STATUS (AE_NOT_FOUND); 518 } 519 520 CurrentNode = ThisNode; 521 } 522 } 523 524 525 /* 526 * Examine the name prefix opcode, if any, 527 * to determine the number of segments 528 */ 529 530 if (*Pathname == AML_DUAL_NAME_PREFIX) 531 { 532 NumSegments = 2; 533 534 /* point to first segment */ 535 536 Pathname++; 537 538 DEBUG_PRINTP (TRACE_NAMES, 539 ("Dual Pathname (2 segments, Flags=%X)\n", Flags)); 540 } 541 542 else if (*Pathname == AML_MULTI_NAME_PREFIX_OP) 543 { 544 NumSegments = (UINT32)* (UINT8 *) ++Pathname; 545 546 /* point to first segment */ 547 548 Pathname++; 549 550 DEBUG_PRINTP (TRACE_NAMES, 551 ("Multi Pathname (%d Segments, Flags=%X) \n", 552 NumSegments, Flags)); 553 } 554 555 else 556 { 557 /* 558 * No Dual or Multi prefix, hence there is only one 559 * segment and Pathname is already pointing to it. 560 */ 561 NumSegments = 1; 562 563 DEBUG_PRINTP (TRACE_NAMES, 564 ("Simple Pathname (1 segment, Flags=%X)\n", Flags)); 565 } 566 567#ifdef ACPI_DEBUG 568 569 /* TBD: [Restructure] Make this a procedure */ 570 571 /* Debug only: print the entire name that we are about to lookup */ 572 573 DEBUG_PRINTP (TRACE_NAMES, ("[")); 574 575 for (i = 0; i < NumSegments; i++) 576 { 577 DEBUG_PRINT_RAW (TRACE_NAMES, ("%4.4s/", &Pathname[i * 4])); 578 } 579 DEBUG_PRINT_RAW (TRACE_NAMES, ("]\n")); 580#endif 581 } 582 583 584 /* 585 * Search namespace for each segment of the name. 586 * Loop through and verify/add each name segment. 587 */ 588 589 590 while (NumSegments-- && CurrentNode) 591 { 592 /* 593 * Search for the current name segment under the current 594 * named object. The Type is significant only at the last (topmost) 595 * level. (We don't care about the types along the path, only 596 * the type of the final target object.) 597 */ 598 ThisSearchType = ACPI_TYPE_ANY; 599 if (!NumSegments) 600 { 601 ThisSearchType = Type; 602 LocalFlags = Flags; 603 } 604 605 /* Pluck one ACPI name from the front of the pathname */ 606 607 MOVE_UNALIGNED32_TO_32 (&SimpleName, Pathname); 608 609 /* Try to find the ACPI name */ 610 611 Status = AcpiNsSearchAndEnter (SimpleName, WalkState, 612 CurrentNode, InterpreterMode, 613 ThisSearchType, LocalFlags, 614 &ThisNode); 615 616 if (ACPI_FAILURE (Status)) 617 { 618 if (Status == AE_NOT_FOUND) 619 { 620 /* Name not found in ACPI namespace */ 621 622 DEBUG_PRINTP (TRACE_NAMES, 623 ("Name [%4.4s] not found in scope %X\n", 624 &SimpleName, CurrentNode)); 625 } 626 627 return_ACPI_STATUS (Status); 628 } 629 630 631 /* 632 * If 1) This is the last segment (NumSegments == 0) 633 * 2) and looking for a specific type 634 * (Not checking for TYPE_ANY) 635 * 3) Which is not an alias 636 * 4) which is not a local type (TYPE_DEF_ANY) 637 * 5) which is not a local type (TYPE_SCOPE) 638 * 6) which is not a local type (TYPE_INDEX_FIELD_DEFN) 639 * 7) and type of object is known (not TYPE_ANY) 640 * 8) and object does not match request 641 * 642 * Then we have a type mismatch. Just warn and ignore it. 643 */ 644 if ((NumSegments == 0) && 645 (TypeToCheckFor != ACPI_TYPE_ANY) && 646 (TypeToCheckFor != INTERNAL_TYPE_ALIAS) && 647 (TypeToCheckFor != INTERNAL_TYPE_DEF_ANY) && 648 (TypeToCheckFor != INTERNAL_TYPE_SCOPE) && 649 (TypeToCheckFor != INTERNAL_TYPE_INDEX_FIELD_DEFN) && 650 (ThisNode->Type != ACPI_TYPE_ANY) && 651 (ThisNode->Type != TypeToCheckFor)) 652 { 653 /* Complain about a type mismatch */ 654 655 REPORT_WARNING ( 656 ("NsLookup: %4.4s, type %X, checking for type %X\n", 657 &SimpleName, ThisNode->Type, TypeToCheckFor)); 658 } 659 660 /* 661 * If this is the last name segment and we are not looking for a 662 * specific type, but the type of found object is known, use that type 663 * to see if it opens a scope. 664 */ 665 666 if ((0 == NumSegments) && (ACPI_TYPE_ANY == Type)) 667 { 668 Type = ThisNode->Type; 669 } 670 671 if ((NumSegments || AcpiNsOpensScope (Type)) && 672 (ThisNode->Child == NULL)) 673 { 674 /* 675 * More segments or the type implies enclosed scope, 676 * and the next scope has not been allocated. 677 */ 678 679 DEBUG_PRINTP (ACPI_INFO, ("Load mode=%X ThisNode=%X\n", 680 InterpreterMode, ThisNode)); 681 } 682 683 CurrentNode = ThisNode; 684 685 /* point to next name segment */ 686 687 Pathname += ACPI_NAME_SIZE; 688 } 689 690 691 /* 692 * Always check if we need to open a new scope 693 */ 694 695CheckForNewScopeAndExit: 696 697 if (!(Flags & NS_DONT_OPEN_SCOPE) && (WalkState)) 698 { 699 /* 700 * If entry is a type which opens a scope, 701 * push the new scope on the scope stack. 702 */ 703 704 if (AcpiNsOpensScope (TypeToCheckFor)) 705 { 706 /* 8-12-98 ASL Grammar Update supports null NamePath */ 707 708 if (NullNamePath) 709 { 710 /* TBD: [Investigate] - is this the correct thing to do? */ 711 712 ScopeToPush = NULL; 713 } 714 else 715 { 716 ScopeToPush = ThisNode; 717 } 718 719 Status = AcpiDsScopeStackPush (ScopeToPush, Type, 720 WalkState); 721 if (ACPI_FAILURE (Status)) 722 { 723 return_ACPI_STATUS (Status); 724 } 725 726 DEBUG_PRINTP (ACPI_INFO, ("Set global scope to %p\n", ScopeToPush)); 727 } 728 } 729 730 *ReturnNode = ThisNode; 731 return_ACPI_STATUS (AE_OK); 732} 733 734