acpi_status
acpi_ns_simple_repair(struct acpi_evaluate_info *info,
u32 expected_btypes,
u32 package_index,
union acpi_operand_object **return_object_ptr)
{
union acpi_operand_object *return_object = *return_object_ptr;
union acpi_operand_object *new_object = NULL;
acpi_status status;
const struct acpi_simple_repair_info *predefined;
ACPI_FUNCTION_NAME(ns_simple_repair);
/*
* Special repairs for certain names that are in the repair table.
* Check if this name is in the list of repairable names.
*/
predefined = acpi_ns_match_simple_repair(info->node,
info->return_btype,
package_index);
if (predefined) {
if (!return_object) {
ACPI_WARN_PREDEFINED((AE_INFO, info->full_pathname,
ACPI_WARN_ALWAYS,
"Missing expected return value"));
}
status = predefined->object_converter(info->node, return_object,
&new_object);
if (ACPI_FAILURE(status)) {
/* A fatal error occurred during a conversion */
ACPI_EXCEPTION((AE_INFO, status,
"During return object analysis"));
return (status);
}
if (new_object) {
goto object_repaired;
}
}
/*
* Do not perform simple object repair unless the return type is not
* expected.
*/
if (info->return_btype & expected_btypes) {
return (AE_OK);
}
/*
* At this point, we know that the type of the returned object was not
* one of the expected types for this predefined name. Attempt to
* repair the object by converting it to one of the expected object
* types for this predefined name.
*/
/*
* If there is no return value, check if we require a return value for
* this predefined name. Either one return value is expected, or none,
* for both methods and other objects.
*
* Try to fix if there was no return object. Warning if failed to fix.
*/
if (!return_object) {
if (expected_btypes && (!(expected_btypes & ACPI_RTYPE_NONE))) {
if (package_index != ACPI_NOT_PACKAGE_ELEMENT) {
ACPI_WARN_PREDEFINED((AE_INFO,
info->full_pathname,
ACPI_WARN_ALWAYS,
"Found unexpected NULL package element"));
status =
acpi_ns_repair_null_element(info,
expected_btypes,
package_index,
return_object_ptr);
if (ACPI_SUCCESS(status)) {
return (AE_OK); /* Repair was successful */
}
} else {
ACPI_WARN_PREDEFINED((AE_INFO,
info->full_pathname,
ACPI_WARN_ALWAYS,
"Missing expected return value"));
}
return (AE_AML_NO_RETURN_VALUE);
}
}
if (expected_btypes & ACPI_RTYPE_INTEGER) {
status = acpi_ns_convert_to_integer(return_object, &new_object);
if (ACPI_SUCCESS(status)) {
goto object_repaired;
}
}
if (expected_btypes & ACPI_RTYPE_STRING) {
status = acpi_ns_convert_to_string(return_object, &new_object);
if (ACPI_SUCCESS(status)) {
goto object_repaired;
}
}
if (expected_btypes & ACPI_RTYPE_BUFFER) {
status = acpi_ns_convert_to_buffer(return_object, &new_object);
if (ACPI_SUCCESS(status)) {
goto object_repaired;
}
}
if (expected_btypes & ACPI_RTYPE_PACKAGE) {
/*
* A package is expected. We will wrap the existing object with a
* new package object. It is often the case that if a variable-length
* package is required, but there is only a single object needed, the
* BIOS will return that object instead of wrapping it with a Package
* object. Note: after the wrapping, the package will be validated
* for correct contents (expected object type or types).
*/
status =
acpi_ns_wrap_with_package(info, return_object, &new_object);
if (ACPI_SUCCESS(status)) {
/*
* The original object just had its reference count
* incremented for being inserted into the new package.
*/
*return_object_ptr = new_object; /* New Package object */
info->return_flags |= ACPI_OBJECT_REPAIRED;
return (AE_OK);
}
}
/* We cannot repair this object */
return (AE_AML_OPERAND_TYPE);
object_repaired:
/* Object was successfully repaired */
if (package_index != ACPI_NOT_PACKAGE_ELEMENT) {
/*
* The original object is a package element. We need to
* decrement the reference count of the original object,
* for removing it from the package.
*
* However, if the original object was just wrapped with a
* package object as part of the repair, we don't need to
* change the reference count.
*/
if (!(info->return_flags & ACPI_OBJECT_WRAPPED)) {
new_object->common.reference_count =
return_object->common.reference_count;
if (return_object->common.reference_count > 1) {
return_object->common.reference_count--;
}
}
ACPI_DEBUG_PRINT((ACPI_DB_REPAIR,
"%s: Converted %s to expected %s at Package index %u\n",
info->full_pathname,
acpi_ut_get_object_type_name(return_object),
acpi_ut_get_object_type_name(new_object),
package_index));
} else {
ACPI_DEBUG_PRINT((ACPI_DB_REPAIR,
"%s: Converted %s to expected %s\n",
info->full_pathname,
acpi_ut_get_object_type_name(return_object),
acpi_ut_get_object_type_name(new_object)));
}
/* Delete old object, install the new return object */
acpi_ut_remove_reference(return_object);
*return_object_ptr = new_object;
info->return_flags |= ACPI_OBJECT_REPAIRED;
return (AE_OK);
}
acpi_status
acpi_ns_repair_object(struct acpi_predefined_data *data,
u32 expected_btypes,
u32 package_index,
union acpi_operand_object **return_object_ptr)
{
union acpi_operand_object *return_object = *return_object_ptr;
union acpi_operand_object *new_object;
acpi_status status;
ACPI_FUNCTION_NAME(ns_repair_object);
/*
* At this point, we know that the type of the returned object was not
* one of the expected types for this predefined name. Attempt to
* repair the object by converting it to one of the expected object
* types for this predefined name.
*/
if (expected_btypes & ACPI_RTYPE_INTEGER) {
status = acpi_ns_convert_to_integer(return_object, &new_object);
if (ACPI_SUCCESS(status)) {
goto object_repaired;
}
}
if (expected_btypes & ACPI_RTYPE_STRING) {
status = acpi_ns_convert_to_string(return_object, &new_object);
if (ACPI_SUCCESS(status)) {
goto object_repaired;
}
}
if (expected_btypes & ACPI_RTYPE_BUFFER) {
status = acpi_ns_convert_to_buffer(return_object, &new_object);
if (ACPI_SUCCESS(status)) {
goto object_repaired;
}
}
if (expected_btypes & ACPI_RTYPE_PACKAGE) {
status = acpi_ns_convert_to_package(return_object, &new_object);
if (ACPI_SUCCESS(status)) {
goto object_repaired;
}
}
/* We cannot repair this object */
return (AE_AML_OPERAND_TYPE);
object_repaired:
/* Object was successfully repaired */
/*
* If the original object is a package element, we need to:
* 1. Set the reference count of the new object to match the
* reference count of the old object.
* 2. Decrement the reference count of the original object.
*/
if (package_index != ACPI_NOT_PACKAGE_ELEMENT) {
new_object->common.reference_count =
return_object->common.reference_count;
if (return_object->common.reference_count > 1) {
return_object->common.reference_count--;
}
ACPI_DEBUG_PRINT((ACPI_DB_REPAIR,
"%s: Converted %s to expected %s at index %u\n",
data->pathname,
acpi_ut_get_object_type_name(return_object),
acpi_ut_get_object_type_name(new_object),
package_index));
} else {
ACPI_DEBUG_PRINT((ACPI_DB_REPAIR,
"%s: Converted %s to expected %s\n",
data->pathname,
acpi_ut_get_object_type_name(return_object),
acpi_ut_get_object_type_name(new_object)));
}
/* Delete old object, install the new return object */
acpi_ut_remove_reference(return_object);
*return_object_ptr = new_object;
data->flags |= ACPI_OBJECT_REPAIRED;
return (AE_OK);
}
