| nsxfeval.c (197104) | nsxfeval.c (199337) |
|---|---|
| 1/******************************************************************************* 2 * 3 * Module Name: nsxfeval - Public interfaces to the ACPI subsystem 4 * ACPI Object evaluation interfaces 5 * 6 ******************************************************************************/ 7 8/****************************************************************************** --- 530 unchanged lines hidden (view full) --- 539 540/******************************************************************************* 541 * 542 * FUNCTION: AcpiWalkNamespace 543 * 544 * PARAMETERS: Type - ACPI_OBJECT_TYPE to search for 545 * StartObject - Handle in namespace where search begins 546 * MaxDepth - Depth to which search is to reach | 1/******************************************************************************* 2 * 3 * Module Name: nsxfeval - Public interfaces to the ACPI subsystem 4 * ACPI Object evaluation interfaces 5 * 6 ******************************************************************************/ 7 8/****************************************************************************** --- 530 unchanged lines hidden (view full) --- 539 540/******************************************************************************* 541 * 542 * FUNCTION: AcpiWalkNamespace 543 * 544 * PARAMETERS: Type - ACPI_OBJECT_TYPE to search for 545 * StartObject - Handle in namespace where search begins 546 * MaxDepth - Depth to which search is to reach |
| 547 * UserFunction - Called when an object of "Type" is found 548 * Context - Passed to user function | 547 * PreOrderVisit - Called during tree pre-order visit 548 * when an object of "Type" is found 549 * PostOrderVisit - Called during tree post-order visit 550 * when an object of "Type" is found 551 * Context - Passed to user function(s) above |
| 549 * ReturnValue - Location where return value of 550 * UserFunction is put if terminated early 551 * 552 * RETURNS Return value from the UserFunction if terminated early. 553 * Otherwise, returns NULL. 554 * 555 * DESCRIPTION: Performs a modified depth-first walk of the namespace tree, 556 * starting (and ending) at the object specified by StartHandle. | 552 * ReturnValue - Location where return value of 553 * UserFunction is put if terminated early 554 * 555 * RETURNS Return value from the UserFunction if terminated early. 556 * Otherwise, returns NULL. 557 * 558 * DESCRIPTION: Performs a modified depth-first walk of the namespace tree, 559 * starting (and ending) at the object specified by StartHandle. |
| 557 * The UserFunction is called whenever an object that matches 558 * the type parameter is found. If the user function returns | 560 * The callback function is called whenever an object that matches 561 * the type parameter is found. If the callback function returns |
| 559 * a non-zero value, the search is terminated immediately and this 560 * value is returned to the caller. 561 * 562 * The point of this procedure is to provide a generic namespace 563 * walk routine that can be called from multiple places to | 562 * a non-zero value, the search is terminated immediately and this 563 * value is returned to the caller. 564 * 565 * The point of this procedure is to provide a generic namespace 566 * walk routine that can be called from multiple places to |
| 564 * provide multiple services; the User Function can be tailored 565 * to each task, whether it is a print function, a compare 566 * function, etc. | 567 * provide multiple services; the callback function(s) can be 568 * tailored to each task, whether it is a print function, 569 * a compare function, etc. |
| 567 * 568 ******************************************************************************/ 569 570ACPI_STATUS 571AcpiWalkNamespace ( 572 ACPI_OBJECT_TYPE Type, 573 ACPI_HANDLE StartObject, 574 UINT32 MaxDepth, | 570 * 571 ******************************************************************************/ 572 573ACPI_STATUS 574AcpiWalkNamespace ( 575 ACPI_OBJECT_TYPE Type, 576 ACPI_HANDLE StartObject, 577 UINT32 MaxDepth, |
| 575 ACPI_WALK_CALLBACK UserFunction, | 578 ACPI_WALK_CALLBACK PreOrderVisit, 579 ACPI_WALK_CALLBACK PostOrderVisit, |
| 576 void *Context, 577 void **ReturnValue) 578{ 579 ACPI_STATUS Status; 580 581 582 ACPI_FUNCTION_TRACE (AcpiWalkNamespace); 583 584 585 /* Parameter validation */ 586 587 if ((Type > ACPI_TYPE_LOCAL_MAX) || 588 (!MaxDepth) || | 580 void *Context, 581 void **ReturnValue) 582{ 583 ACPI_STATUS Status; 584 585 586 ACPI_FUNCTION_TRACE (AcpiWalkNamespace); 587 588 589 /* Parameter validation */ 590 591 if ((Type > ACPI_TYPE_LOCAL_MAX) || 592 (!MaxDepth) || |
| 589 (!UserFunction)) | 593 (!PreOrderVisit && !PostOrderVisit)) |
| 590 { 591 return_ACPI_STATUS (AE_BAD_PARAMETER); 592 } 593 594 /* 595 * Need to acquire the namespace reader lock to prevent interference 596 * with any concurrent table unloads (which causes the deletion of 597 * namespace objects). We cannot allow the deletion of a namespace node --- 18 unchanged lines hidden (view full) --- 616 */ 617 Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE); 618 if (ACPI_FAILURE (Status)) 619 { 620 goto UnlockAndExit; 621 } 622 623 Status = AcpiNsWalkNamespace (Type, StartObject, MaxDepth, | 594 { 595 return_ACPI_STATUS (AE_BAD_PARAMETER); 596 } 597 598 /* 599 * Need to acquire the namespace reader lock to prevent interference 600 * with any concurrent table unloads (which causes the deletion of 601 * namespace objects). We cannot allow the deletion of a namespace node --- 18 unchanged lines hidden (view full) --- 620 */ 621 Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE); 622 if (ACPI_FAILURE (Status)) 623 { 624 goto UnlockAndExit; 625 } 626 627 Status = AcpiNsWalkNamespace (Type, StartObject, MaxDepth, |
| 624 ACPI_NS_WALK_UNLOCK, UserFunction, Context, ReturnValue); | 628 ACPI_NS_WALK_UNLOCK, PreOrderVisit, 629 PostOrderVisit, Context, ReturnValue); |
| 625 626 (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE); 627 628UnlockAndExit: 629 (void) AcpiUtReleaseReadLock (&AcpiGbl_NamespaceRwLock); 630 return_ACPI_STATUS (Status); 631} 632 --- 195 unchanged lines hidden (view full) --- 828 Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE); 829 if (ACPI_FAILURE (Status)) 830 { 831 return_ACPI_STATUS (Status); 832 } 833 834 Status = AcpiNsWalkNamespace (ACPI_TYPE_DEVICE, ACPI_ROOT_OBJECT, 835 ACPI_UINT32_MAX, ACPI_NS_WALK_UNLOCK, | 630 631 (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE); 632 633UnlockAndExit: 634 (void) AcpiUtReleaseReadLock (&AcpiGbl_NamespaceRwLock); 635 return_ACPI_STATUS (Status); 636} 637 --- 195 unchanged lines hidden (view full) --- 833 Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE); 834 if (ACPI_FAILURE (Status)) 835 { 836 return_ACPI_STATUS (Status); 837 } 838 839 Status = AcpiNsWalkNamespace (ACPI_TYPE_DEVICE, ACPI_ROOT_OBJECT, 840 ACPI_UINT32_MAX, ACPI_NS_WALK_UNLOCK, |
| 836 AcpiNsGetDeviceCallback, &Info, ReturnValue); | 841 AcpiNsGetDeviceCallback, NULL, &Info, ReturnValue); |
| 837 838 (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE); 839 return_ACPI_STATUS (Status); 840} 841 842ACPI_EXPORT_SYMBOL (AcpiGetDevices) 843 844 --- 171 unchanged lines hidden --- | 842 843 (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE); 844 return_ACPI_STATUS (Status); 845} 846 847ACPI_EXPORT_SYMBOL (AcpiGetDevices) 848 849 --- 171 unchanged lines hidden --- |