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DeRefOf operator: Update to fully resolve FieldUnit and BufferField refs.

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Previously, references to these objects were resolved only to the actual
FieldUnit or BufferField object. The correct behavior is to resolve these
references to an actual value.

NOTE: It appears that this issues is present in Windows7 but not
Windows8.
This commit is contained in:
Robert Moore 2013-07-17 13:06:12 -07:00
parent 2d680bf6e4
commit 87c98c18d6
1 changed files with 35 additions and 6 deletions
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41
source/components/executer/exoparg1.c
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@ -1102,15 +1102,44 @@ 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;
}
/*
* 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:
Status = AcpiExReadDataFromField (WalkState,
ReturnDesc, &TempDesc);
if (ACPI_FAILURE (Status))
{
goto Cleanup;
}
ReturnDesc = TempDesc;
break;
default:
/* Add another reference to the object */
AcpiUtAddReference (ReturnDesc);
break;
}
}
/* Add another reference to the object! */
AcpiUtAddReference (ReturnDesc);
break;
default: