From cd0b2248241f4146152fb04a6bf4bccb6ce0478a Mon Sep 17 00:00:00 2001 From: Bob Moore Date: Thu, 10 Apr 2008 19:06:43 +0400 Subject: 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 Signed-off-by: Alexey Starikovskiy Signed-off-by: Lin Ming Signed-off-by: Len Brown --- drivers/acpi/scan.c | 3 +-- drivers/acpi/utilities/utcopy.c | 32 ++++++++++++++++++++++++-------- drivers/acpi/utils.c | 2 +- 3 files changed, 26 insertions(+), 11 deletions(-) (limited to 'drivers/acpi') diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c index e6ce262b5d44..464ee6ea8c61 100644 --- a/drivers/acpi/scan.c +++ b/drivers/acpi/scan.c @@ -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; } diff --git a/drivers/acpi/utilities/utcopy.c b/drivers/acpi/utilities/utcopy.c index 4e9a62b34aef..2a57c2c2c782 100644 --- a/drivers/acpi/utilities/utcopy.c +++ b/drivers/acpi/utilities/utcopy.c @@ -43,6 +43,8 @@ #include #include +#include + #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; diff --git a/drivers/acpi/utils.c b/drivers/acpi/utils.c index 44ea60cf21c0..100926143818 100644 --- a/drivers/acpi/utils.c +++ b/drivers/acpi/utils.c @@ -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", -- cgit v1.2.3