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ACPICA: Fixes for external Reference Objects

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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
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3
drivers/acpi/scan.c
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;
}

32
drivers/acpi/utilities/utcopy.c
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;

2
drivers/acpi/utils.c
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",