b8d06746a169983eea47e242d314144b8fa4c1eb
[reactos.git] / drivers / bus / acpi / acpica / dispatcher / dswload2.c
1 /******************************************************************************
2 *
3 * Module Name: dswload2 - Dispatcher second pass namespace load callbacks
4 *
5 *****************************************************************************/
6
7 /*
8 * Copyright (C) 2000 - 2017, Intel Corp.
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
44 #include "acpi.h"
45 #include "accommon.h"
46 #include "acparser.h"
47 #include "amlcode.h"
48 #include "acdispat.h"
49 #include "acinterp.h"
50 #include "acnamesp.h"
51 #include "acevents.h"
52
53 #define _COMPONENT ACPI_DISPATCHER
54 ACPI_MODULE_NAME ("dswload2")
55
56
57 /*******************************************************************************
58 *
59 * FUNCTION: AcpiDsLoad2BeginOp
60 *
61 * PARAMETERS: WalkState - Current state of the parse tree walk
62 * OutOp - Wher to return op if a new one is created
63 *
64 * RETURN: Status
65 *
66 * DESCRIPTION: Descending callback used during the loading of ACPI tables.
67 *
68 ******************************************************************************/
69
70 ACPI_STATUS
71 AcpiDsLoad2BeginOp (
72 ACPI_WALK_STATE *WalkState,
73 ACPI_PARSE_OBJECT **OutOp)
74 {
75 ACPI_PARSE_OBJECT *Op;
76 ACPI_NAMESPACE_NODE *Node;
77 ACPI_STATUS Status;
78 ACPI_OBJECT_TYPE ObjectType;
79 char *BufferPtr;
80 UINT32 Flags;
81
82
83 ACPI_FUNCTION_TRACE (DsLoad2BeginOp);
84
85
86 Op = WalkState->Op;
87 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "Op=%p State=%p\n", Op, WalkState));
88
89 if (Op)
90 {
91 if ((WalkState->ControlState) &&
92 (WalkState->ControlState->Common.State ==
93 ACPI_CONTROL_CONDITIONAL_EXECUTING))
94 {
95 /* We are executing a while loop outside of a method */
96
97 Status = AcpiDsExecBeginOp (WalkState, OutOp);
98 return_ACPI_STATUS (Status);
99 }
100
101 /* We only care about Namespace opcodes here */
102
103 if ((!(WalkState->OpInfo->Flags & AML_NSOPCODE) &&
104 (WalkState->Opcode != AML_INT_NAMEPATH_OP)) ||
105 (!(WalkState->OpInfo->Flags & AML_NAMED)))
106 {
107 return_ACPI_STATUS (AE_OK);
108 }
109
110 /* Get the name we are going to enter or lookup in the namespace */
111
112 if (WalkState->Opcode == AML_INT_NAMEPATH_OP)
113 {
114 /* For Namepath op, get the path string */
115
116 BufferPtr = Op->Common.Value.String;
117 if (!BufferPtr)
118 {
119 /* No name, just exit */
120
121 return_ACPI_STATUS (AE_OK);
122 }
123 }
124 else
125 {
126 /* Get name from the op */
127
128 BufferPtr = ACPI_CAST_PTR (char, &Op->Named.Name);
129 }
130 }
131 else
132 {
133 /* Get the namestring from the raw AML */
134
135 BufferPtr = AcpiPsGetNextNamestring (&WalkState->ParserState);
136 }
137
138 /* Map the opcode into an internal object type */
139
140 ObjectType = WalkState->OpInfo->ObjectType;
141
142 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
143 "State=%p Op=%p Type=%X\n", WalkState, Op, ObjectType));
144
145 switch (WalkState->Opcode)
146 {
147 case AML_FIELD_OP:
148 case AML_BANK_FIELD_OP:
149 case AML_INDEX_FIELD_OP:
150
151 Node = NULL;
152 Status = AE_OK;
153 break;
154
155 case AML_INT_NAMEPATH_OP:
156 /*
157 * The NamePath is an object reference to an existing object.
158 * Don't enter the name into the namespace, but look it up
159 * for use later.
160 */
161 Status = AcpiNsLookup (WalkState->ScopeInfo, BufferPtr, ObjectType,
162 ACPI_IMODE_EXECUTE, ACPI_NS_SEARCH_PARENT,
163 WalkState, &(Node));
164 break;
165
166 case AML_SCOPE_OP:
167
168 /* Special case for Scope(\) -> refers to the Root node */
169
170 if (Op && (Op->Named.Node == AcpiGbl_RootNode))
171 {
172 Node = Op->Named.Node;
173
174 Status = AcpiDsScopeStackPush (Node, ObjectType, WalkState);
175 if (ACPI_FAILURE (Status))
176 {
177 return_ACPI_STATUS (Status);
178 }
179 }
180 else
181 {
182 /*
183 * The Path is an object reference to an existing object.
184 * Don't enter the name into the namespace, but look it up
185 * for use later.
186 */
187 Status = AcpiNsLookup (WalkState->ScopeInfo, BufferPtr, ObjectType,
188 ACPI_IMODE_EXECUTE, ACPI_NS_SEARCH_PARENT,
189 WalkState, &(Node));
190 if (ACPI_FAILURE (Status))
191 {
192 #ifdef ACPI_ASL_COMPILER
193 if (Status == AE_NOT_FOUND)
194 {
195 Status = AE_OK;
196 }
197 else
198 {
199 ACPI_ERROR_NAMESPACE (WalkState->ScopeInfo,
200 BufferPtr, Status);
201 }
202 #else
203 ACPI_ERROR_NAMESPACE (WalkState->ScopeInfo,
204 BufferPtr, Status);
205 #endif
206 return_ACPI_STATUS (Status);
207 }
208 }
209
210 /*
211 * We must check to make sure that the target is
212 * one of the opcodes that actually opens a scope
213 */
214 switch (Node->Type)
215 {
216 case ACPI_TYPE_ANY:
217 case ACPI_TYPE_LOCAL_SCOPE: /* Scope */
218 case ACPI_TYPE_DEVICE:
219 case ACPI_TYPE_POWER:
220 case ACPI_TYPE_PROCESSOR:
221 case ACPI_TYPE_THERMAL:
222
223 /* These are acceptable types */
224 break;
225
226 case ACPI_TYPE_INTEGER:
227 case ACPI_TYPE_STRING:
228 case ACPI_TYPE_BUFFER:
229
230 /*
231 * These types we will allow, but we will change the type.
232 * This enables some existing code of the form:
233 *
234 * Name (DEB, 0)
235 * Scope (DEB) { ... }
236 */
237 ACPI_WARNING ((AE_INFO,
238 "Type override - [%4.4s] had invalid type (%s) "
239 "for Scope operator, changed to type ANY",
240 AcpiUtGetNodeName (Node), AcpiUtGetTypeName (Node->Type)));
241
242 Node->Type = ACPI_TYPE_ANY;
243 WalkState->ScopeInfo->Common.Value = ACPI_TYPE_ANY;
244 break;
245
246 case ACPI_TYPE_METHOD:
247
248 /*
249 * Allow scope change to root during execution of module-level
250 * code. Root is typed METHOD during this time.
251 */
252 if ((Node == AcpiGbl_RootNode) &&
253 (WalkState->ParseFlags & ACPI_PARSE_MODULE_LEVEL))
254 {
255 break;
256 }
257
258 /*lint -fallthrough */
259
260 default:
261
262 /* All other types are an error */
263
264 ACPI_ERROR ((AE_INFO,
265 "Invalid type (%s) for target of "
266 "Scope operator [%4.4s] (Cannot override)",
267 AcpiUtGetTypeName (Node->Type), AcpiUtGetNodeName (Node)));
268
269 return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
270 }
271 break;
272
273 default:
274
275 /* All other opcodes */
276
277 if (Op && Op->Common.Node)
278 {
279 /* This op/node was previously entered into the namespace */
280
281 Node = Op->Common.Node;
282
283 if (AcpiNsOpensScope (ObjectType))
284 {
285 Status = AcpiDsScopeStackPush (Node, ObjectType, WalkState);
286 if (ACPI_FAILURE (Status))
287 {
288 return_ACPI_STATUS (Status);
289 }
290 }
291
292 return_ACPI_STATUS (AE_OK);
293 }
294
295 /*
296 * Enter the named type into the internal namespace. We enter the name
297 * as we go downward in the parse tree. Any necessary subobjects that
298 * involve arguments to the opcode must be created as we go back up the
299 * parse tree later.
300 *
301 * Note: Name may already exist if we are executing a deferred opcode.
302 */
303 if (WalkState->DeferredNode)
304 {
305 /* This name is already in the namespace, get the node */
306
307 Node = WalkState->DeferredNode;
308 Status = AE_OK;
309 break;
310 }
311
312 Flags = ACPI_NS_NO_UPSEARCH;
313 if (WalkState->PassNumber == ACPI_IMODE_EXECUTE)
314 {
315 /* Execution mode, node cannot already exist, node is temporary */
316
317 Flags |= ACPI_NS_ERROR_IF_FOUND;
318
319 if (!(WalkState->ParseFlags & ACPI_PARSE_MODULE_LEVEL))
320 {
321 Flags |= ACPI_NS_TEMPORARY;
322 }
323 }
324
325 #ifdef ACPI_ASL_COMPILER
326
327 /*
328 * Do not open a scope for AML_EXTERNAL_OP
329 * AcpiNsLookup can open a new scope based on the object type
330 * of this op. AML_EXTERNAL_OP is a declaration rather than a
331 * definition. In the case that this external is a method object,
332 * AcpiNsLookup will open a new scope. However, an AML_EXTERNAL_OP
333 * associated with the ACPI_TYPE_METHOD is a declaration, rather than
334 * a definition. Flags is set to avoid opening a scope for any
335 * AML_EXTERNAL_OP.
336 */
337 if (WalkState->Opcode == AML_EXTERNAL_OP)
338 {
339 Flags |= ACPI_NS_DONT_OPEN_SCOPE;
340 }
341 #endif
342
343 /* Add new entry or lookup existing entry */
344
345 Status = AcpiNsLookup (WalkState->ScopeInfo, BufferPtr, ObjectType,
346 ACPI_IMODE_LOAD_PASS2, Flags, WalkState, &Node);
347
348 if (ACPI_SUCCESS (Status) && (Flags & ACPI_NS_TEMPORARY))
349 {
350 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
351 "***New Node [%4.4s] %p is temporary\n",
352 AcpiUtGetNodeName (Node), Node));
353 }
354 break;
355 }
356
357 if (ACPI_FAILURE (Status))
358 {
359 ACPI_ERROR_NAMESPACE (WalkState->ScopeInfo,
360 BufferPtr, Status);
361 return_ACPI_STATUS (Status);
362 }
363
364 if (!Op)
365 {
366 /* Create a new op */
367
368 Op = AcpiPsAllocOp (WalkState->Opcode, WalkState->Aml);
369 if (!Op)
370 {
371 return_ACPI_STATUS (AE_NO_MEMORY);
372 }
373
374 /* Initialize the new op */
375
376 if (Node)
377 {
378 Op->Named.Name = Node->Name.Integer;
379 }
380 *OutOp = Op;
381 }
382
383 /*
384 * Put the Node in the "op" object that the parser uses, so we
385 * can get it again quickly when this scope is closed
386 */
387 Op->Common.Node = Node;
388 return_ACPI_STATUS (Status);
389 }
390
391
392 /*******************************************************************************
393 *
394 * FUNCTION: AcpiDsLoad2EndOp
395 *
396 * PARAMETERS: WalkState - Current state of the parse tree walk
397 *
398 * RETURN: Status
399 *
400 * DESCRIPTION: Ascending callback used during the loading of the namespace,
401 * both control methods and everything else.
402 *
403 ******************************************************************************/
404
405 ACPI_STATUS
406 AcpiDsLoad2EndOp (
407 ACPI_WALK_STATE *WalkState)
408 {
409 ACPI_PARSE_OBJECT *Op;
410 ACPI_STATUS Status = AE_OK;
411 ACPI_OBJECT_TYPE ObjectType;
412 ACPI_NAMESPACE_NODE *Node;
413 ACPI_PARSE_OBJECT *Arg;
414 ACPI_NAMESPACE_NODE *NewNode;
415 #ifndef ACPI_NO_METHOD_EXECUTION
416 UINT32 i;
417 UINT8 RegionSpace;
418 #endif
419
420
421 ACPI_FUNCTION_TRACE (DsLoad2EndOp);
422
423 Op = WalkState->Op;
424 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "Opcode [%s] Op %p State %p\n",
425 WalkState->OpInfo->Name, Op, WalkState));
426
427 /* Check if opcode had an associated namespace object */
428
429 if (!(WalkState->OpInfo->Flags & AML_NSOBJECT))
430 {
431 return_ACPI_STATUS (AE_OK);
432 }
433
434 if (Op->Common.AmlOpcode == AML_SCOPE_OP)
435 {
436 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
437 "Ending scope Op=%p State=%p\n", Op, WalkState));
438 }
439
440 ObjectType = WalkState->OpInfo->ObjectType;
441
442 /*
443 * Get the Node/name from the earlier lookup
444 * (It was saved in the *op structure)
445 */
446 Node = Op->Common.Node;
447
448 /*
449 * Put the Node on the object stack (Contains the ACPI Name of
450 * this object)
451 */
452 WalkState->Operands[0] = (void *) Node;
453 WalkState->NumOperands = 1;
454
455 /* Pop the scope stack */
456
457 if (AcpiNsOpensScope (ObjectType) &&
458 (Op->Common.AmlOpcode != AML_INT_METHODCALL_OP))
459 {
460 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "(%s) Popping scope for Op %p\n",
461 AcpiUtGetTypeName (ObjectType), Op));
462
463 Status = AcpiDsScopeStackPop (WalkState);
464 if (ACPI_FAILURE (Status))
465 {
466 goto Cleanup;
467 }
468 }
469
470 /*
471 * Named operations are as follows:
472 *
473 * AML_ALIAS
474 * AML_BANKFIELD
475 * AML_CREATEBITFIELD
476 * AML_CREATEBYTEFIELD
477 * AML_CREATEDWORDFIELD
478 * AML_CREATEFIELD
479 * AML_CREATEQWORDFIELD
480 * AML_CREATEWORDFIELD
481 * AML_DATA_REGION
482 * AML_DEVICE
483 * AML_EVENT
484 * AML_FIELD
485 * AML_INDEXFIELD
486 * AML_METHOD
487 * AML_METHODCALL
488 * AML_MUTEX
489 * AML_NAME
490 * AML_NAMEDFIELD
491 * AML_OPREGION
492 * AML_POWERRES
493 * AML_PROCESSOR
494 * AML_SCOPE
495 * AML_THERMALZONE
496 */
497
498 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
499 "Create-Load [%s] State=%p Op=%p NamedObj=%p\n",
500 AcpiPsGetOpcodeName (Op->Common.AmlOpcode), WalkState, Op, Node));
501
502 /* Decode the opcode */
503
504 Arg = Op->Common.Value.Arg;
505
506 switch (WalkState->OpInfo->Type)
507 {
508 #ifndef ACPI_NO_METHOD_EXECUTION
509
510 case AML_TYPE_CREATE_FIELD:
511 /*
512 * Create the field object, but the field buffer and index must
513 * be evaluated later during the execution phase
514 */
515 Status = AcpiDsCreateBufferField (Op, WalkState);
516 break;
517
518 case AML_TYPE_NAMED_FIELD:
519 /*
520 * If we are executing a method, initialize the field
521 */
522 if (WalkState->MethodNode)
523 {
524 Status = AcpiDsInitFieldObjects (Op, WalkState);
525 }
526
527 switch (Op->Common.AmlOpcode)
528 {
529 case AML_INDEX_FIELD_OP:
530
531 Status = AcpiDsCreateIndexField (
532 Op, (ACPI_HANDLE) Arg->Common.Node, WalkState);
533 break;
534
535 case AML_BANK_FIELD_OP:
536
537 Status = AcpiDsCreateBankField (Op, Arg->Common.Node, WalkState);
538 break;
539
540 case AML_FIELD_OP:
541
542 Status = AcpiDsCreateField (Op, Arg->Common.Node, WalkState);
543 break;
544
545 default:
546
547 /* All NAMED_FIELD opcodes must be handled above */
548 break;
549 }
550 break;
551
552 case AML_TYPE_NAMED_SIMPLE:
553
554 Status = AcpiDsCreateOperands (WalkState, Arg);
555 if (ACPI_FAILURE (Status))
556 {
557 goto Cleanup;
558 }
559
560 switch (Op->Common.AmlOpcode)
561 {
562 case AML_PROCESSOR_OP:
563
564 Status = AcpiExCreateProcessor (WalkState);
565 break;
566
567 case AML_POWER_RESOURCE_OP:
568
569 Status = AcpiExCreatePowerResource (WalkState);
570 break;
571
572 case AML_MUTEX_OP:
573
574 Status = AcpiExCreateMutex (WalkState);
575 break;
576
577 case AML_EVENT_OP:
578
579 Status = AcpiExCreateEvent (WalkState);
580 break;
581
582 case AML_ALIAS_OP:
583
584 Status = AcpiExCreateAlias (WalkState);
585 break;
586
587 default:
588
589 /* Unknown opcode */
590
591 Status = AE_OK;
592 goto Cleanup;
593 }
594
595 /* Delete operands */
596
597 for (i = 1; i < WalkState->NumOperands; i++)
598 {
599 AcpiUtRemoveReference (WalkState->Operands[i]);
600 WalkState->Operands[i] = NULL;
601 }
602
603 break;
604 #endif /* ACPI_NO_METHOD_EXECUTION */
605
606 case AML_TYPE_NAMED_COMPLEX:
607
608 switch (Op->Common.AmlOpcode)
609 {
610 #ifndef ACPI_NO_METHOD_EXECUTION
611 case AML_REGION_OP:
612 case AML_DATA_REGION_OP:
613
614 if (Op->Common.AmlOpcode == AML_REGION_OP)
615 {
616 RegionSpace = (ACPI_ADR_SPACE_TYPE)
617 ((Op->Common.Value.Arg)->Common.Value.Integer);
618 }
619 else
620 {
621 RegionSpace = ACPI_ADR_SPACE_DATA_TABLE;
622 }
623
624 /*
625 * The OpRegion is not fully parsed at this time. The only valid
626 * argument is the SpaceId. (We must save the address of the
627 * AML of the address and length operands)
628 *
629 * If we have a valid region, initialize it. The namespace is
630 * unlocked at this point.
631 *
632 * Need to unlock interpreter if it is locked (if we are running
633 * a control method), in order to allow _REG methods to be run
634 * during AcpiEvInitializeRegion.
635 */
636 if (WalkState->MethodNode)
637 {
638 /*
639 * Executing a method: initialize the region and unlock
640 * the interpreter
641 */
642 Status = AcpiExCreateRegion (Op->Named.Data,
643 Op->Named.Length, RegionSpace, WalkState);
644 if (ACPI_FAILURE (Status))
645 {
646 return_ACPI_STATUS (Status);
647 }
648 }
649
650 Status = AcpiEvInitializeRegion (
651 AcpiNsGetAttachedObject (Node));
652 break;
653
654 case AML_NAME_OP:
655
656 Status = AcpiDsCreateNode (WalkState, Node, Op);
657 break;
658
659 case AML_METHOD_OP:
660 /*
661 * MethodOp PkgLength NameString MethodFlags TermList
662 *
663 * Note: We must create the method node/object pair as soon as we
664 * see the method declaration. This allows later pass1 parsing
665 * of invocations of the method (need to know the number of
666 * arguments.)
667 */
668 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
669 "LOADING-Method: State=%p Op=%p NamedObj=%p\n",
670 WalkState, Op, Op->Named.Node));
671
672 if (!AcpiNsGetAttachedObject (Op->Named.Node))
673 {
674 WalkState->Operands[0] = ACPI_CAST_PTR (void, Op->Named.Node);
675 WalkState->NumOperands = 1;
676
677 Status = AcpiDsCreateOperands (
678 WalkState, Op->Common.Value.Arg);
679 if (ACPI_SUCCESS (Status))
680 {
681 Status = AcpiExCreateMethod (
682 Op->Named.Data, Op->Named.Length, WalkState);
683 }
684
685 WalkState->Operands[0] = NULL;
686 WalkState->NumOperands = 0;
687
688 if (ACPI_FAILURE (Status))
689 {
690 return_ACPI_STATUS (Status);
691 }
692 }
693 break;
694
695 #endif /* ACPI_NO_METHOD_EXECUTION */
696
697 default:
698
699 /* All NAMED_COMPLEX opcodes must be handled above */
700 break;
701 }
702 break;
703
704 case AML_CLASS_INTERNAL:
705
706 /* case AML_INT_NAMEPATH_OP: */
707 break;
708
709 case AML_CLASS_METHOD_CALL:
710
711 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
712 "RESOLVING-MethodCall: State=%p Op=%p NamedObj=%p\n",
713 WalkState, Op, Node));
714
715 /*
716 * Lookup the method name and save the Node
717 */
718 Status = AcpiNsLookup (WalkState->ScopeInfo, Arg->Common.Value.String,
719 ACPI_TYPE_ANY, ACPI_IMODE_LOAD_PASS2,
720 ACPI_NS_SEARCH_PARENT | ACPI_NS_DONT_OPEN_SCOPE,
721 WalkState, &(NewNode));
722 if (ACPI_SUCCESS (Status))
723 {
724 /*
725 * Make sure that what we found is indeed a method
726 * We didn't search for a method on purpose, to see if the name
727 * would resolve
728 */
729 if (NewNode->Type != ACPI_TYPE_METHOD)
730 {
731 Status = AE_AML_OPERAND_TYPE;
732 }
733
734 /* We could put the returned object (Node) on the object stack for
735 * later, but for now, we will put it in the "op" object that the
736 * parser uses, so we can get it again at the end of this scope
737 */
738 Op->Common.Node = NewNode;
739 }
740 else
741 {
742 ACPI_ERROR_NAMESPACE (WalkState->ScopeInfo,
743 Arg->Common.Value.String, Status);
744 }
745 break;
746
747
748 default:
749
750 break;
751 }
752
753 Cleanup:
754
755 /* Remove the Node pushed at the very beginning */
756
757 WalkState->Operands[0] = NULL;
758 WalkState->NumOperands = 0;
759 return_ACPI_STATUS (Status);
760 }