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ACPICA: Disallow evaluation of named object types with no value

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Return AE_TYPE for objects that have no value and therefore
evaluation is undefined: Device, Event, Mutex, Region, Thermal,
and Scope.

Signed-off-by: Bob Moore <robert.moore@intel.com>
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 2008-09-27 10:29:31 +08:00 committed by Len Brown
parent 65f4692c52
commit b68bacf225
1 changed files with 21 additions and 0 deletions
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21
drivers/acpi/namespace/nseval.c
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@ -195,7 +195,28 @@ acpi_status acpi_ns_evaluate(struct acpi_evaluate_info * info)
} else {
/*
* 2) Object is not a method, return its current value
*
* Disallow certain object types. For these, "evaluation" is undefined.
*/
switch (info->resolved_node->type) {
case ACPI_TYPE_DEVICE:
case ACPI_TYPE_EVENT:
case ACPI_TYPE_MUTEX:
case ACPI_TYPE_REGION:
case ACPI_TYPE_THERMAL:
case ACPI_TYPE_LOCAL_SCOPE:
ACPI_ERROR((AE_INFO,
"[%4.4s] Evaluation of object type [%s] is not supported",
info->resolved_node->name.ascii,
acpi_ut_get_type_name(info->resolved_node->
type)));
return_ACPI_STATUS(AE_TYPE);
default:
break;
}
/*
* Objects require additional resolution steps (e.g., the Node may be