ACPICA: Fixes for external Reference Objects

All Reference Objects returned via the AcpiEvaluteObject interface
are now marked as type "REFERENCE" instead of "ANY". The type ANY
is now reservered for NULL objects - either NULL package elements
or unresolved named references.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
Bob Moore 2008-04-10 19:06:43 +04:00 committed by Len Brown
parent 7a5bb99645
commit cd0b224824
3 changed files with 26 additions and 11 deletions

View File

@ -677,9 +677,8 @@ acpi_bus_extract_wakeup_device_power_package(struct acpi_device *device,
device->wakeup.resources.count = package->package.count - 2;
for (i = 0; i < device->wakeup.resources.count; i++) {
element = &(package->package.elements[i + 2]);
if (element->type != ACPI_TYPE_ANY) {
if (element->type != ACPI_TYPE_LOCAL_REFERENCE)
return AE_BAD_DATA;
}
device->wakeup.resources.handles[i] = element->reference.handle;
}

View File

@ -43,6 +43,8 @@
#include <acpi/acpi.h>
#include <acpi/amlcode.h>
#include <acpi/acnamesp.h>
#define _COMPONENT ACPI_UTILITIES
ACPI_MODULE_NAME("utcopy")
@ -172,22 +174,21 @@ acpi_ut_copy_isimple_to_esimple(union acpi_operand_object *internal_object,
case ACPI_TYPE_LOCAL_REFERENCE:
/*
* This is an object reference. Attempt to dereference it.
*/
/* This is an object reference. */
switch (internal_object->reference.opcode) {
case AML_INT_NAMEPATH_OP:
/* For namepath, return the object handle ("reference") */
default:
/*
* Use the object type of "Any" to indicate a reference
* to object containing a handle to an ACPI named object.
*/
external_object->type = ACPI_TYPE_ANY;
/* We are referring to the namespace node */
external_object->reference.handle =
internal_object->reference.node;
external_object->reference.actual_type =
acpi_ns_get_type(internal_object->reference.node);
break;
}
break;
@ -460,6 +461,7 @@ acpi_ut_copy_esimple_to_isimple(union acpi_object *external_object,
case ACPI_TYPE_STRING:
case ACPI_TYPE_BUFFER:
case ACPI_TYPE_INTEGER:
case ACPI_TYPE_LOCAL_REFERENCE:
internal_object = acpi_ut_create_internal_object((u8)
external_object->
@ -469,6 +471,11 @@ acpi_ut_copy_esimple_to_isimple(union acpi_object *external_object,
}
break;
case ACPI_TYPE_ANY: /* This is the case for a NULL object */
*ret_internal_object = NULL;
return_ACPI_STATUS(AE_OK);
default:
/* All other types are not supported */
@ -522,6 +529,15 @@ acpi_ut_copy_esimple_to_isimple(union acpi_object *external_object,
internal_object->integer.value = external_object->integer.value;
break;
case ACPI_TYPE_LOCAL_REFERENCE:
/* TBD: should validate incoming handle */
internal_object->reference.opcode = AML_INT_NAMEPATH_OP;
internal_object->reference.node =
external_object->reference.handle;
break;
default:
/* Other types can't get here */
break;

View File

@ -398,7 +398,7 @@ acpi_evaluate_reference(acpi_handle handle,
element = &(package->package.elements[i]);
if (element->type != ACPI_TYPE_ANY) {
if (element->type != ACPI_TYPE_LOCAL_REFERENCE) {
status = AE_BAD_DATA;
printk(KERN_ERR PREFIX
"Expecting a [Reference] package element, found type %X\n",