1 /****************************************************************************** 2 * 3 * Module Name: nsrepair - Repair for objects returned by predefined methods 4 * 5 *****************************************************************************/ 6 7 /****************************************************************************** 8 * 9 * 1. Copyright Notice 10 * 11 * Some or all of this work - Copyright (c) 1999 - 2014, Intel Corp. 12 * All rights reserved. 13 * 14 * 2. License 15 * 16 * 2.1. This is your license from Intel Corp. under its intellectual property 17 * rights. You may have additional license terms from the party that provided 18 * you this software, covering your right to use that party's intellectual 19 * property rights. 20 * 21 * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a 22 * copy of the source code appearing in this file ("Covered Code") an 23 * irrevocable, perpetual, worldwide license under Intel's copyrights in the 24 * base code distributed originally by Intel ("Original Intel Code") to copy, 25 * make derivatives, distribute, use and display any portion of the Covered 26 * Code in any form, with the right to sublicense such rights; and 27 * 28 * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent 29 * license (with the right to sublicense), under only those claims of Intel 30 * patents that are infringed by the Original Intel Code, to make, use, sell, 31 * offer to sell, and import the Covered Code and derivative works thereof 32 * solely to the minimum extent necessary to exercise the above copyright 33 * license, and in no event shall the patent license extend to any additions 34 * to or modifications of the Original Intel Code. No other license or right 35 * is granted directly or by implication, estoppel or otherwise; 36 * 37 * The above copyright and patent license is granted only if the following 38 * conditions are met: 39 * 40 * 3. Conditions 41 * 42 * 3.1. Redistribution of Source with Rights to Further Distribute Source. 43 * Redistribution of source code of any substantial portion of the Covered 44 * Code or modification with rights to further distribute source must include 45 * the above Copyright Notice, the above License, this list of Conditions, 46 * and the following Disclaimer and Export Compliance provision. In addition, 47 * Licensee must cause all Covered Code to which Licensee contributes to 48 * contain a file documenting the changes Licensee made to create that Covered 49 * Code and the date of any change. Licensee must include in that file the 50 * documentation of any changes made by any predecessor Licensee. Licensee 51 * must include a prominent statement that the modification is derived, 52 * directly or indirectly, from Original Intel Code. 53 * 54 * 3.2. Redistribution of Source with no Rights to Further Distribute Source. 55 * Redistribution of source code of any substantial portion of the Covered 56 * Code or modification without rights to further distribute source must 57 * include the following Disclaimer and Export Compliance provision in the 58 * documentation and/or other materials provided with distribution. In 59 * addition, Licensee may not authorize further sublicense of source of any 60 * portion of the Covered Code, and must include terms to the effect that the 61 * license from Licensee to its licensee is limited to the intellectual 62 * property embodied in the software Licensee provides to its licensee, and 63 * not to intellectual property embodied in modifications its licensee may 64 * make. 65 * 66 * 3.3. Redistribution of Executable. Redistribution in executable form of any 67 * substantial portion of the Covered Code or modification must reproduce the 68 * above Copyright Notice, and the following Disclaimer and Export Compliance 69 * provision in the documentation and/or other materials provided with the 70 * distribution. 71 * 72 * 3.4. Intel retains all right, title, and interest in and to the Original 73 * Intel Code. 74 * 75 * 3.5. Neither the name Intel nor any other trademark owned or controlled by 76 * Intel shall be used in advertising or otherwise to promote the sale, use or 77 * other dealings in products derived from or relating to the Covered Code 78 * without prior written authorization from Intel. 79 * 80 * 4. Disclaimer and Export Compliance 81 * 82 * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED 83 * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE 84 * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE, 85 * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY 86 * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY 87 * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A 88 * PARTICULAR PURPOSE. 89 * 90 * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES 91 * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR 92 * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT, 93 * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY 94 * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL 95 * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS 96 * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY 97 * LIMITED REMEDY. 98 * 99 * 4.3. Licensee shall not export, either directly or indirectly, any of this 100 * software or system incorporating such software without first obtaining any 101 * required license or other approval from the U. S. Department of Commerce or 102 * any other agency or department of the United States Government. In the 103 * event Licensee exports any such software from the United States or 104 * re-exports any such software from a foreign destination, Licensee shall 105 * ensure that the distribution and export/re-export of the software is in 106 * compliance with all laws, regulations, orders, or other restrictions of the 107 * U.S. Export Administration Regulations. Licensee agrees that neither it nor 108 * any of its subsidiaries will export/re-export any technical data, process, 109 * software, or service, directly or indirectly, to any country for which the 110 * United States government or any agency thereof requires an export license, 111 * other governmental approval, or letter of assurance, without first obtaining 112 * such license, approval or letter. 113 * 114 *****************************************************************************/ 115 116 #define __NSREPAIR_C__ 117 118 #include "acpi.h" 119 #include "accommon.h" 120 #include "acnamesp.h" 121 #include "acinterp.h" 122 #include "acpredef.h" 123 #include "amlresrc.h" 124 125 #define _COMPONENT ACPI_NAMESPACE 126 ACPI_MODULE_NAME ("nsrepair") 127 128 129 /******************************************************************************* 130 * 131 * This module attempts to repair or convert objects returned by the 132 * predefined methods to an object type that is expected, as per the ACPI 133 * specification. The need for this code is dictated by the many machines that 134 * return incorrect types for the standard predefined methods. Performing these 135 * conversions here, in one place, eliminates the need for individual ACPI 136 * device drivers to do the same. Note: Most of these conversions are different 137 * than the internal object conversion routines used for implicit object 138 * conversion. 139 * 140 * The following conversions can be performed as necessary: 141 * 142 * Integer -> String 143 * Integer -> Buffer 144 * String -> Integer 145 * String -> Buffer 146 * Buffer -> Integer 147 * Buffer -> String 148 * Buffer -> Package of Integers 149 * Package -> Package of one Package 150 * 151 * Additional conversions that are available: 152 * Convert a null return or zero return value to an EndTag descriptor 153 * Convert an ASCII string to a Unicode buffer 154 * 155 * An incorrect standalone object is wrapped with required outer package 156 * 157 * Additional possible repairs: 158 * Required package elements that are NULL replaced by Integer/String/Buffer 159 * 160 ******************************************************************************/ 161 162 163 /* Local prototypes */ 164 165 static const ACPI_SIMPLE_REPAIR_INFO * 166 AcpiNsMatchSimpleRepair ( 167 ACPI_NAMESPACE_NODE *Node, 168 UINT32 ReturnBtype, 169 UINT32 PackageIndex); 170 171 172 /* 173 * Special but simple repairs for some names. 174 * 175 * 2nd argument: Unexpected types that can be repaired 176 */ 177 static const ACPI_SIMPLE_REPAIR_INFO AcpiObjectRepairInfo[] = 178 { 179 /* Resource descriptor conversions */ 180 181 { "_CRS", ACPI_RTYPE_INTEGER | ACPI_RTYPE_STRING | ACPI_RTYPE_BUFFER | ACPI_RTYPE_NONE, 182 ACPI_NOT_PACKAGE_ELEMENT, 183 AcpiNsConvertToResource }, 184 { "_DMA", ACPI_RTYPE_INTEGER | ACPI_RTYPE_STRING | ACPI_RTYPE_BUFFER | ACPI_RTYPE_NONE, 185 ACPI_NOT_PACKAGE_ELEMENT, 186 AcpiNsConvertToResource }, 187 { "_PRS", ACPI_RTYPE_INTEGER | ACPI_RTYPE_STRING | ACPI_RTYPE_BUFFER | ACPI_RTYPE_NONE, 188 ACPI_NOT_PACKAGE_ELEMENT, 189 AcpiNsConvertToResource }, 190 191 /* Unicode conversions */ 192 193 { "_MLS", ACPI_RTYPE_STRING, 1, 194 AcpiNsConvertToUnicode }, 195 { "_STR", ACPI_RTYPE_STRING | ACPI_RTYPE_BUFFER, 196 ACPI_NOT_PACKAGE_ELEMENT, 197 AcpiNsConvertToUnicode }, 198 { {0,0,0,0}, 0, 0, NULL } /* Table terminator */ 199 }; 200 201 202 /******************************************************************************* 203 * 204 * FUNCTION: AcpiNsSimpleRepair 205 * 206 * PARAMETERS: Info - Method execution information block 207 * ExpectedBtypes - Object types expected 208 * PackageIndex - Index of object within parent package (if 209 * applicable - ACPI_NOT_PACKAGE_ELEMENT 210 * otherwise) 211 * ReturnObjectPtr - Pointer to the object returned from the 212 * evaluation of a method or object 213 * 214 * RETURN: Status. AE_OK if repair was successful. 215 * 216 * DESCRIPTION: Attempt to repair/convert a return object of a type that was 217 * not expected. 218 * 219 ******************************************************************************/ 220 221 ACPI_STATUS 222 AcpiNsSimpleRepair ( 223 ACPI_EVALUATE_INFO *Info, 224 UINT32 ExpectedBtypes, 225 UINT32 PackageIndex, 226 ACPI_OPERAND_OBJECT **ReturnObjectPtr) 227 { 228 ACPI_OPERAND_OBJECT *ReturnObject = *ReturnObjectPtr; 229 ACPI_OPERAND_OBJECT *NewObject = NULL; 230 ACPI_STATUS Status; 231 const ACPI_SIMPLE_REPAIR_INFO *Predefined; 232 233 234 ACPI_FUNCTION_NAME (NsSimpleRepair); 235 236 237 /* 238 * Special repairs for certain names that are in the repair table. 239 * Check if this name is in the list of repairable names. 240 */ 241 Predefined = AcpiNsMatchSimpleRepair (Info->Node, 242 Info->ReturnBtype, PackageIndex); 243 if (Predefined) 244 { 245 if (!ReturnObject) 246 { 247 ACPI_WARN_PREDEFINED ((AE_INFO, Info->FullPathname, 248 ACPI_WARN_ALWAYS, "Missing expected return value")); 249 } 250 251 Status = Predefined->ObjectConverter (ReturnObject, &NewObject); 252 if (ACPI_FAILURE (Status)) 253 { 254 /* A fatal error occurred during a conversion */ 255 256 ACPI_EXCEPTION ((AE_INFO, Status, 257 "During return object analysis")); 258 return (Status); 259 } 260 if (NewObject) 261 { 262 goto ObjectRepaired; 263 } 264 } 265 266 /* 267 * Do not perform simple object repair unless the return type is not 268 * expected. 269 */ 270 if (Info->ReturnBtype & ExpectedBtypes) 271 { 272 return (AE_OK); 273 } 274 275 /* 276 * At this point, we know that the type of the returned object was not 277 * one of the expected types for this predefined name. Attempt to 278 * repair the object by converting it to one of the expected object 279 * types for this predefined name. 280 */ 281 282 /* 283 * If there is no return value, check if we require a return value for 284 * this predefined name. Either one return value is expected, or none, 285 * for both methods and other objects. 286 * 287 * Try to fix if there was no return object. Warning if failed to fix. 288 */ 289 if (!ReturnObject) 290 { 291 if (ExpectedBtypes && (!(ExpectedBtypes & ACPI_RTYPE_NONE))) 292 { 293 if (PackageIndex != ACPI_NOT_PACKAGE_ELEMENT) 294 { 295 ACPI_WARN_PREDEFINED ((AE_INFO, Info->FullPathname, 296 ACPI_WARN_ALWAYS, "Found unexpected NULL package element")); 297 298 Status = AcpiNsRepairNullElement (Info, ExpectedBtypes, 299 PackageIndex, ReturnObjectPtr); 300 if (ACPI_SUCCESS (Status)) 301 { 302 return (AE_OK); /* Repair was successful */ 303 } 304 } 305 else 306 { 307 ACPI_WARN_PREDEFINED ((AE_INFO, Info->FullPathname, 308 ACPI_WARN_ALWAYS, "Missing expected return value")); 309 } 310 311 return (AE_AML_NO_RETURN_VALUE); 312 } 313 } 314 315 if (ExpectedBtypes & ACPI_RTYPE_INTEGER) 316 { 317 Status = AcpiNsConvertToInteger (ReturnObject, &NewObject); 318 if (ACPI_SUCCESS (Status)) 319 { 320 goto ObjectRepaired; 321 } 322 } 323 if (ExpectedBtypes & ACPI_RTYPE_STRING) 324 { 325 Status = AcpiNsConvertToString (ReturnObject, &NewObject); 326 if (ACPI_SUCCESS (Status)) 327 { 328 goto ObjectRepaired; 329 } 330 } 331 if (ExpectedBtypes & ACPI_RTYPE_BUFFER) 332 { 333 Status = AcpiNsConvertToBuffer (ReturnObject, &NewObject); 334 if (ACPI_SUCCESS (Status)) 335 { 336 goto ObjectRepaired; 337 } 338 } 339 if (ExpectedBtypes & ACPI_RTYPE_PACKAGE) 340 { 341 /* 342 * A package is expected. We will wrap the existing object with a 343 * new package object. It is often the case that if a variable-length 344 * package is required, but there is only a single object needed, the 345 * BIOS will return that object instead of wrapping it with a Package 346 * object. Note: after the wrapping, the package will be validated 347 * for correct contents (expected object type or types). 348 */ 349 Status = AcpiNsWrapWithPackage (Info, ReturnObject, &NewObject); 350 if (ACPI_SUCCESS (Status)) 351 { 352 /* 353 * The original object just had its reference count 354 * incremented for being inserted into the new package. 355 */ 356 *ReturnObjectPtr = NewObject; /* New Package object */ 357 Info->ReturnFlags |= ACPI_OBJECT_REPAIRED; 358 return (AE_OK); 359 } 360 } 361 362 /* We cannot repair this object */ 363 364 return (AE_AML_OPERAND_TYPE); 365 366 367 ObjectRepaired: 368 369 /* Object was successfully repaired */ 370 371 if (PackageIndex != ACPI_NOT_PACKAGE_ELEMENT) 372 { 373 /* 374 * The original object is a package element. We need to 375 * decrement the reference count of the original object, 376 * for removing it from the package. 377 * 378 * However, if the original object was just wrapped with a 379 * package object as part of the repair, we don't need to 380 * change the reference count. 381 */ 382 if (!(Info->ReturnFlags & ACPI_OBJECT_WRAPPED)) 383 { 384 NewObject->Common.ReferenceCount = 385 ReturnObject->Common.ReferenceCount; 386 387 if (ReturnObject->Common.ReferenceCount > 1) 388 { 389 ReturnObject->Common.ReferenceCount--; 390 } 391 } 392 393 ACPI_DEBUG_PRINT ((ACPI_DB_REPAIR, 394 "%s: Converted %s to expected %s at Package index %u\n", 395 Info->FullPathname, AcpiUtGetObjectTypeName (ReturnObject), 396 AcpiUtGetObjectTypeName (NewObject), PackageIndex)); 397 } 398 else 399 { 400 ACPI_DEBUG_PRINT ((ACPI_DB_REPAIR, 401 "%s: Converted %s to expected %s\n", 402 Info->FullPathname, AcpiUtGetObjectTypeName (ReturnObject), 403 AcpiUtGetObjectTypeName (NewObject))); 404 } 405 406 /* Delete old object, install the new return object */ 407 408 AcpiUtRemoveReference (ReturnObject); 409 *ReturnObjectPtr = NewObject; 410 Info->ReturnFlags |= ACPI_OBJECT_REPAIRED; 411 return (AE_OK); 412 } 413 414 415 /****************************************************************************** 416 * 417 * FUNCTION: AcpiNsMatchSimpleRepair 418 * 419 * PARAMETERS: Node - Namespace node for the method/object 420 * ReturnBtype - Object type that was returned 421 * PackageIndex - Index of object within parent package (if 422 * applicable - ACPI_NOT_PACKAGE_ELEMENT 423 * otherwise) 424 * 425 * RETURN: Pointer to entry in repair table. NULL indicates not found. 426 * 427 * DESCRIPTION: Check an object name against the repairable object list. 428 * 429 *****************************************************************************/ 430 431 static const ACPI_SIMPLE_REPAIR_INFO * 432 AcpiNsMatchSimpleRepair ( 433 ACPI_NAMESPACE_NODE *Node, 434 UINT32 ReturnBtype, 435 UINT32 PackageIndex) 436 { 437 const ACPI_SIMPLE_REPAIR_INFO *ThisName; 438 439 440 /* Search info table for a repairable predefined method/object name */ 441 442 ThisName = AcpiObjectRepairInfo; 443 while (ThisName->ObjectConverter) 444 { 445 if (ACPI_COMPARE_NAME (Node->Name.Ascii, ThisName->Name)) 446 { 447 /* Check if we can actually repair this name/type combination */ 448 449 if ((ReturnBtype & ThisName->UnexpectedBtypes) && 450 (PackageIndex == ThisName->PackageIndex)) 451 { 452 return (ThisName); 453 } 454 455 return (NULL); 456 } 457 ThisName++; 458 } 459 460 return (NULL); /* Name was not found in the repair table */ 461 } 462 463 464 /******************************************************************************* 465 * 466 * FUNCTION: AcpiNsRepairNullElement 467 * 468 * PARAMETERS: Info - Method execution information block 469 * ExpectedBtypes - Object types expected 470 * PackageIndex - Index of object within parent package (if 471 * applicable - ACPI_NOT_PACKAGE_ELEMENT 472 * otherwise) 473 * ReturnObjectPtr - Pointer to the object returned from the 474 * evaluation of a method or object 475 * 476 * RETURN: Status. AE_OK if repair was successful. 477 * 478 * DESCRIPTION: Attempt to repair a NULL element of a returned Package object. 479 * 480 ******************************************************************************/ 481 482 ACPI_STATUS 483 AcpiNsRepairNullElement ( 484 ACPI_EVALUATE_INFO *Info, 485 UINT32 ExpectedBtypes, 486 UINT32 PackageIndex, 487 ACPI_OPERAND_OBJECT **ReturnObjectPtr) 488 { 489 ACPI_OPERAND_OBJECT *ReturnObject = *ReturnObjectPtr; 490 ACPI_OPERAND_OBJECT *NewObject; 491 492 493 ACPI_FUNCTION_NAME (NsRepairNullElement); 494 495 496 /* No repair needed if return object is non-NULL */ 497 498 if (ReturnObject) 499 { 500 return (AE_OK); 501 } 502 503 /* 504 * Attempt to repair a NULL element of a Package object. This applies to 505 * predefined names that return a fixed-length package and each element 506 * is required. It does not apply to variable-length packages where NULL 507 * elements are allowed, especially at the end of the package. 508 */ 509 if (ExpectedBtypes & ACPI_RTYPE_INTEGER) 510 { 511 /* Need an Integer - create a zero-value integer */ 512 513 NewObject = AcpiUtCreateIntegerObject ((UINT64) 0); 514 } 515 else if (ExpectedBtypes & ACPI_RTYPE_STRING) 516 { 517 /* Need a String - create a NULL string */ 518 519 NewObject = AcpiUtCreateStringObject (0); 520 } 521 else if (ExpectedBtypes & ACPI_RTYPE_BUFFER) 522 { 523 /* Need a Buffer - create a zero-length buffer */ 524 525 NewObject = AcpiUtCreateBufferObject (0); 526 } 527 else 528 { 529 /* Error for all other expected types */ 530 531 return (AE_AML_OPERAND_TYPE); 532 } 533 534 if (!NewObject) 535 { 536 return (AE_NO_MEMORY); 537 } 538 539 /* Set the reference count according to the parent Package object */ 540 541 NewObject->Common.ReferenceCount = Info->ParentPackage->Common.ReferenceCount; 542 543 ACPI_DEBUG_PRINT ((ACPI_DB_REPAIR, 544 "%s: Converted NULL package element to expected %s at index %u\n", 545 Info->FullPathname, AcpiUtGetObjectTypeName (NewObject), PackageIndex)); 546 547 *ReturnObjectPtr = NewObject; 548 Info->ReturnFlags |= ACPI_OBJECT_REPAIRED; 549 return (AE_OK); 550 } 551 552 553 /****************************************************************************** 554 * 555 * FUNCTION: AcpiNsRemoveNullElements 556 * 557 * PARAMETERS: Info - Method execution information block 558 * PackageType - An AcpiReturnPackageTypes value 559 * ObjDesc - A Package object 560 * 561 * RETURN: None. 562 * 563 * DESCRIPTION: Remove all NULL package elements from packages that contain 564 * a variable number of subpackages. For these types of 565 * packages, NULL elements can be safely removed. 566 * 567 *****************************************************************************/ 568 569 void 570 AcpiNsRemoveNullElements ( 571 ACPI_EVALUATE_INFO *Info, 572 UINT8 PackageType, 573 ACPI_OPERAND_OBJECT *ObjDesc) 574 { 575 ACPI_OPERAND_OBJECT **Source; 576 ACPI_OPERAND_OBJECT **Dest; 577 UINT32 Count; 578 UINT32 NewCount; 579 UINT32 i; 580 581 582 ACPI_FUNCTION_NAME (NsRemoveNullElements); 583 584 585 /* 586 * We can safely remove all NULL elements from these package types: 587 * PTYPE1_VAR packages contain a variable number of simple data types. 588 * PTYPE2 packages contain a variable number of subpackages. 589 */ 590 switch (PackageType) 591 { 592 case ACPI_PTYPE1_VAR: 593 case ACPI_PTYPE2: 594 case ACPI_PTYPE2_COUNT: 595 case ACPI_PTYPE2_PKG_COUNT: 596 case ACPI_PTYPE2_FIXED: 597 case ACPI_PTYPE2_MIN: 598 case ACPI_PTYPE2_REV_FIXED: 599 case ACPI_PTYPE2_FIX_VAR: 600 601 break; 602 603 default: 604 case ACPI_PTYPE1_FIXED: 605 case ACPI_PTYPE1_OPTION: 606 return; 607 } 608 609 Count = ObjDesc->Package.Count; 610 NewCount = Count; 611 612 Source = ObjDesc->Package.Elements; 613 Dest = Source; 614 615 /* Examine all elements of the package object, remove nulls */ 616 617 for (i = 0; i < Count; i++) 618 { 619 if (!*Source) 620 { 621 NewCount--; 622 } 623 else 624 { 625 *Dest = *Source; 626 Dest++; 627 } 628 Source++; 629 } 630 631 /* Update parent package if any null elements were removed */ 632 633 if (NewCount < Count) 634 { 635 ACPI_DEBUG_PRINT ((ACPI_DB_REPAIR, 636 "%s: Found and removed %u NULL elements\n", 637 Info->FullPathname, (Count - NewCount))); 638 639 /* NULL terminate list and update the package count */ 640 641 *Dest = NULL; 642 ObjDesc->Package.Count = NewCount; 643 } 644 } 645 646 647 /******************************************************************************* 648 * 649 * FUNCTION: AcpiNsWrapWithPackage 650 * 651 * PARAMETERS: Info - Method execution information block 652 * OriginalObject - Pointer to the object to repair. 653 * ObjDescPtr - The new package object is returned here 654 * 655 * RETURN: Status, new object in *ObjDescPtr 656 * 657 * DESCRIPTION: Repair a common problem with objects that are defined to 658 * return a variable-length Package of sub-objects. If there is 659 * only one sub-object, some BIOS code mistakenly simply declares 660 * the single object instead of a Package with one sub-object. 661 * This function attempts to repair this error by wrapping a 662 * Package object around the original object, creating the 663 * correct and expected Package with one sub-object. 664 * 665 * Names that can be repaired in this manner include: 666 * _ALR, _CSD, _HPX, _MLS, _PLD, _PRT, _PSS, _TRT, _TSS, 667 * _BCL, _DOD, _FIX, _Sx 668 * 669 ******************************************************************************/ 670 671 ACPI_STATUS 672 AcpiNsWrapWithPackage ( 673 ACPI_EVALUATE_INFO *Info, 674 ACPI_OPERAND_OBJECT *OriginalObject, 675 ACPI_OPERAND_OBJECT **ObjDescPtr) 676 { 677 ACPI_OPERAND_OBJECT *PkgObjDesc; 678 679 680 ACPI_FUNCTION_NAME (NsWrapWithPackage); 681 682 683 /* 684 * Create the new outer package and populate it. The new package will 685 * have a single element, the lone sub-object. 686 */ 687 PkgObjDesc = AcpiUtCreatePackageObject (1); 688 if (!PkgObjDesc) 689 { 690 return (AE_NO_MEMORY); 691 } 692 693 PkgObjDesc->Package.Elements[0] = OriginalObject; 694 695 ACPI_DEBUG_PRINT ((ACPI_DB_REPAIR, 696 "%s: Wrapped %s with expected Package object\n", 697 Info->FullPathname, AcpiUtGetObjectTypeName (OriginalObject))); 698 699 /* Return the new object in the object pointer */ 700 701 *ObjDescPtr = PkgObjDesc; 702 Info->ReturnFlags |= ACPI_OBJECT_REPAIRED | ACPI_OBJECT_WRAPPED; 703 return (AE_OK); 704 } 705