/* Local prototypes */
static acpi_status
acpi_ns_check_package(char *pathname,
- union acpi_operand_object *return_object,
+ union acpi_operand_object **return_object_ptr,
const union acpi_predefined_info *predefined);
static acpi_status
static acpi_status
acpi_ns_check_object_type(char *pathname,
- union acpi_operand_object *return_object,
+ union acpi_operand_object **return_object_ptr,
u32 expected_btypes, u32 package_index);
static acpi_status
acpi_ns_check_reference(char *pathname,
union acpi_operand_object *return_object);
+static acpi_status
+acpi_ns_repair_object(u32 expected_btypes,
+ u32 package_index,
+ union acpi_operand_object **return_object_ptr);
+
/*
* Names for the types that can be returned by the predefined objects.
* Used for warning messages. Must be in the same order as the ACPI_RTYPEs
* FUNCTION: acpi_ns_check_predefined_names
*
* PARAMETERS: Node - Namespace node for the method/object
- * return_object - Object returned from the evaluation of this
- * method/object
+ * return_object_ptr - Pointer to the object returned from the
+ * evaluation of a method or object
*
* RETURN: Status
*
acpi_status
acpi_ns_check_predefined_names(struct acpi_namespace_node *node,
- union acpi_operand_object *return_object)
+ union acpi_operand_object **return_object_ptr)
{
+ union acpi_operand_object *return_object = *return_object_ptr;
acpi_status status = AE_OK;
const union acpi_predefined_info *predefined;
char *pathname;
* Check that the type of the return object is what is expected for
* this predefined name
*/
- status = acpi_ns_check_object_type(pathname, return_object,
+ status = acpi_ns_check_object_type(pathname, return_object_ptr,
predefined->info.expected_btypes,
ACPI_NOT_PACKAGE);
if (ACPI_FAILURE(status)) {
if (ACPI_GET_OBJECT_TYPE(return_object) == ACPI_TYPE_PACKAGE) {
status =
- acpi_ns_check_package(pathname, return_object, predefined);
+ acpi_ns_check_package(pathname, return_object_ptr,
+ predefined);
}
exit:
* FUNCTION: acpi_ns_check_package
*
* PARAMETERS: Pathname - Full pathname to the node (for error msgs)
- * return_object - Object returned from the evaluation of a
- * method or object
+ * return_object_ptr - Pointer to the object returned from the
+ * evaluation of a method or object
* Predefined - Pointer to entry in predefined name table
*
* RETURN: Status
static acpi_status
acpi_ns_check_package(char *pathname,
- union acpi_operand_object *return_object,
+ union acpi_operand_object **return_object_ptr,
const union acpi_predefined_info *predefined)
{
+ union acpi_operand_object *return_object = *return_object_ptr;
const union acpi_predefined_info *package;
union acpi_operand_object *sub_package;
union acpi_operand_object **elements;
* elements must be of the same type
*/
for (i = 0; i < count; i++) {
- status = acpi_ns_check_object_type(pathname, *elements,
+ status = acpi_ns_check_object_type(pathname, elements,
package->ret_info.
object_type1, i);
if (ACPI_FAILURE(status)) {
status =
acpi_ns_check_object_type(pathname,
- *elements,
+ elements,
package->
ret_info3.
object_type[i],
status =
acpi_ns_check_object_type(pathname,
- *elements,
+ elements,
package->
ret_info3.
tail_object_type,
/* First element is the (Integer) count of sub-packages to follow */
- status = acpi_ns_check_object_type(pathname, *elements,
+ status = acpi_ns_check_object_type(pathname, elements,
ACPI_RTYPE_INTEGER, 0);
if (ACPI_FAILURE(status)) {
return (status);
/* Each sub-object must be of type Package */
status =
- acpi_ns_check_object_type(pathname, sub_package,
+ acpi_ns_check_object_type(pathname, &sub_package,
ACPI_RTYPE_PACKAGE, i);
if (ACPI_FAILURE(status)) {
return (status);
for (j = 0; j < expected_count; j++) {
status =
acpi_ns_check_object_type(pathname,
- sub_elements
- [j],
- package->
- ret_info2.
- object_type
- [j], j);
+ &sub_elements[j],
+ package->ret_info2.object_type[j], j);
if (ACPI_FAILURE(status)) {
return (status);
}
status =
acpi_ns_check_object_type(pathname,
- *sub_elements,
+ sub_elements,
ACPI_RTYPE_INTEGER,
0);
if (ACPI_FAILURE(status)) {
* The second group can have a count of zero.
*/
for (i = 0; i < count1; i++) {
- status = acpi_ns_check_object_type(pathname, *this_element,
+ status = acpi_ns_check_object_type(pathname, this_element,
type1, i);
if (ACPI_FAILURE(status)) {
return (status);
}
for (i = 0; i < count2; i++) {
- status = acpi_ns_check_object_type(pathname, *this_element,
+ status = acpi_ns_check_object_type(pathname, this_element,
type2, (i + count1));
if (ACPI_FAILURE(status)) {
return (status);
* FUNCTION: acpi_ns_check_object_type
*
* PARAMETERS: Pathname - Full pathname to the node (for error msgs)
- * return_object - Object return from the execution of this
- * method/object
+ * return_object_ptr - Pointer to the object returned from the
+ * evaluation of a method or object
* expected_btypes - Bitmap of expected return type(s)
* package_index - Index of object within parent package (if
* applicable - ACPI_NOT_PACKAGE otherwise)
static acpi_status
acpi_ns_check_object_type(char *pathname,
- union acpi_operand_object *return_object,
+ union acpi_operand_object **return_object_ptr,
u32 expected_btypes, u32 package_index)
{
+ union acpi_operand_object *return_object = *return_object_ptr;
acpi_status status = AE_OK;
u32 return_btype;
char type_buffer[48]; /* Room for 5 types */
/* Is the object one of the expected types? */
if (!(return_btype & expected_btypes)) {
+
+ /* Type mismatch -- attempt repair of the returned object */
+
+ status = acpi_ns_repair_object(expected_btypes, package_index,
+ return_object_ptr);
+ if (ACPI_SUCCESS(status)) {
+ return (status);
+ }
goto type_error_exit;
}
return (AE_AML_OPERAND_TYPE);
}
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ns_repair_object
+ *
+ * PARAMETERS: Pathname - Full pathname to the node (for error msgs)
+ * package_index - Used to determine if target is in a package
+ * return_object_ptr - Pointer to the object returned from the
+ * evaluation of a method or object
+ *
+ * RETURN: Status. AE_OK if repair was successful.
+ *
+ * DESCRIPTION: Attempt to repair/convert a return object of a type that was
+ * not expected.
+ *
+ ******************************************************************************/
+
+static acpi_status
+acpi_ns_repair_object(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_size length;
+
+ switch (ACPI_GET_OBJECT_TYPE(return_object)) {
+ case ACPI_TYPE_BUFFER:
+
+ if (!(expected_btypes & ACPI_RTYPE_STRING)) {
+ return (AE_AML_OPERAND_TYPE);
+ }
+
+ /*
+ * Have a Buffer, expected a String, convert. Use a to_string
+ * conversion, no transform performed on the buffer data. The best
+ * example of this is the _BIF method, where the string data from
+ * the battery is often (incorrectly) returned as buffer object(s).
+ */
+ length = 0;
+ while ((length < return_object->buffer.length) &&
+ (return_object->buffer.pointer[length])) {
+ length++;
+ }
+
+ /* Allocate a new string object */
+
+ new_object = acpi_ut_create_string_object(length);
+ if (!new_object) {
+ return (AE_NO_MEMORY);
+ }
+
+ /*
+ * Copy the raw buffer data with no transform. String is already NULL
+ * terminated at Length+1.
+ */
+ ACPI_MEMCPY(new_object->string.pointer,
+ return_object->buffer.pointer, length);
+
+ /* Install the new return object */
+
+ acpi_ut_remove_reference(return_object);
+ *return_object_ptr = new_object;
+
+ /*
+ * If the object is a package element, we need to:
+ * 1. Decrement the reference count of the orignal object, it was
+ * incremented when building the package
+ * 2. Increment the reference count of the new object, it will be
+ * decremented when releasing the package
+ */
+ if (package_index != ACPI_NOT_PACKAGE) {
+ acpi_ut_remove_reference(return_object);
+ acpi_ut_add_reference(new_object);
+ }
+ return (AE_OK);
+
+ default:
+ break;
+ }
+
+ return (AE_AML_OPERAND_TYPE);
+}
projects / linux-2.6-omap-h63xx.git / commitdiff