diff options
Diffstat (limited to 'sys/contrib/dev/acpica/components/executer/exoparg1.c')
| -rw-r--r-- | sys/contrib/dev/acpica/components/executer/exoparg1.c | 50 |
1 files changed, 43 insertions, 7 deletions
diff --git a/sys/contrib/dev/acpica/components/executer/exoparg1.c b/sys/contrib/dev/acpica/components/executer/exoparg1.c index 44f06a4..cd917ef 100644 --- a/sys/contrib/dev/acpica/components/executer/exoparg1.c +++ b/sys/contrib/dev/acpica/components/executer/exoparg1.c @@ -1009,10 +1009,17 @@ AcpiExOpcode_1A_0T_1R ( * add another reference to the referenced object, however. */ ReturnDesc = *(Operand[0]->Reference.Where); - if (ReturnDesc) + if (!ReturnDesc) { - AcpiUtAddReference (ReturnDesc); + /* + * Element is NULL, do not allow the dereference. + * This provides compatibility with other ACPI + * implementations. + */ + return_ACPI_STATUS (AE_AML_UNINITIALIZED_ELEMENT); } + + AcpiUtAddReference (ReturnDesc); break; default: @@ -1030,15 +1037,44 @@ AcpiExOpcode_1A_0T_1R ( ReturnDesc = Operand[0]->Reference.Object; if (ACPI_GET_DESCRIPTOR_TYPE (ReturnDesc) == - ACPI_DESC_TYPE_NAMED) + ACPI_DESC_TYPE_NAMED) { ReturnDesc = AcpiNsGetAttachedObject ( - (ACPI_NAMESPACE_NODE *) ReturnDesc); - } + (ACPI_NAMESPACE_NODE *) ReturnDesc); + if (!ReturnDesc) + { + break; + } - /* Add another reference to the object! */ + /* + * June 2013: + * BufferFields/FieldUnits require additional resolution + */ + switch (ReturnDesc->Common.Type) + { + case ACPI_TYPE_BUFFER_FIELD: + case ACPI_TYPE_LOCAL_REGION_FIELD: + case ACPI_TYPE_LOCAL_BANK_FIELD: + case ACPI_TYPE_LOCAL_INDEX_FIELD: - AcpiUtAddReference (ReturnDesc); + Status = AcpiExReadDataFromField (WalkState, + ReturnDesc, &TempDesc); + if (ACPI_FAILURE (Status)) + { + goto Cleanup; + } + + ReturnDesc = TempDesc; + break; + + default: + + /* Add another reference to the object */ + + AcpiUtAddReference (ReturnDesc); + break; + } + } break; default: |
