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path: root/drivers/acpi/acpica/nspredef.c
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Diffstat (limited to 'drivers/acpi/acpica/nspredef.c')
-rw-r--r--drivers/acpi/acpica/nspredef.c53
1 files changed, 36 insertions, 17 deletions
diff --git a/drivers/acpi/acpica/nspredef.c b/drivers/acpi/acpica/nspredef.c
index d34fa59548f7..7096bcda0c72 100644
--- a/drivers/acpi/acpica/nspredef.c
+++ b/drivers/acpi/acpica/nspredef.c
@@ -6,7 +6,7 @@
*****************************************************************************/
/*
- * Copyright (C) 2000 - 2008, Intel Corp.
+ * Copyright (C) 2000 - 2010, Intel Corp.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
@@ -231,6 +231,7 @@ acpi_ns_check_predefined_names(struct acpi_namespace_node *node,
* Note: Package may have been newly created by call above.
*/
if ((*return_object_ptr)->common.type == ACPI_TYPE_PACKAGE) {
+ data->parent_package = *return_object_ptr;
status = acpi_ns_check_package(data, return_object_ptr);
if (ACPI_FAILURE(status)) {
goto exit;
@@ -710,6 +711,7 @@ acpi_ns_check_package_list(struct acpi_predefined_data *data,
for (i = 0; i < count; i++) {
sub_package = *elements;
sub_elements = sub_package->package.elements;
+ data->parent_package = sub_package;
/* Each sub-object must be of type Package */
@@ -721,6 +723,7 @@ acpi_ns_check_package_list(struct acpi_predefined_data *data,
/* Examine the different types of expected sub-packages */
+ data->parent_package = sub_package;
switch (package->ret_info.type) {
case ACPI_PTYPE2:
case ACPI_PTYPE2_PKG_COUNT:
@@ -800,7 +803,7 @@ acpi_ns_check_package_list(struct acpi_predefined_data *data,
/*
* First element is the (Integer) count of elements, including
- * the count field.
+ * the count field (the ACPI name is num_elements)
*/
status = acpi_ns_check_object_type(data, sub_elements,
ACPI_RTYPE_INTEGER,
@@ -822,6 +825,16 @@ acpi_ns_check_package_list(struct acpi_predefined_data *data,
expected_count = package->ret_info.count1;
goto package_too_small;
}
+ if (expected_count == 0) {
+ /*
+ * Either the num_entries element was originally zero or it was
+ * a NULL element and repaired to an Integer of value zero.
+ * In either case, repair it by setting num_entries to be the
+ * actual size of the subpackage.
+ */
+ expected_count = sub_package->package.count;
+ (*sub_elements)->integer.value = expected_count;
+ }
/* Check the type of each sub-package element */
@@ -945,10 +958,18 @@ acpi_ns_check_object_type(struct acpi_predefined_data *data,
char type_buffer[48]; /* Room for 5 types */
/*
- * If we get a NULL return_object here, it is a NULL package element,
- * and this is always an error.
+ * If we get a NULL return_object here, it is a NULL package element.
+ * Since all extraneous NULL package elements were removed earlier by a
+ * call to acpi_ns_remove_null_elements, this is an unexpected NULL element.
+ * We will attempt to repair it.
*/
if (!return_object) {
+ status = acpi_ns_repair_null_element(data, expected_btypes,
+ package_index,
+ return_object_ptr);
+ if (ACPI_SUCCESS(status)) {
+ return (AE_OK); /* Repair was successful */
+ }
goto type_error_exit;
}
@@ -1000,27 +1021,25 @@ acpi_ns_check_object_type(struct acpi_predefined_data *data,
/* Is the object one of the expected types? */
- if (!(return_btype & expected_btypes)) {
+ if (return_btype & expected_btypes) {
- /* Type mismatch -- attempt repair of the returned object */
+ /* For reference objects, check that the reference type is correct */
- status = acpi_ns_repair_object(data, expected_btypes,
- package_index,
- return_object_ptr);
- if (ACPI_SUCCESS(status)) {
- return (AE_OK); /* Repair was successful */
+ if (return_object->common.type == ACPI_TYPE_LOCAL_REFERENCE) {
+ status = acpi_ns_check_reference(data, return_object);
}
- goto type_error_exit;
+
+ return (status);
}
- /* For reference objects, check that the reference type is correct */
+ /* Type mismatch -- attempt repair of the returned object */
- if (return_object->common.type == ACPI_TYPE_LOCAL_REFERENCE) {
- status = acpi_ns_check_reference(data, return_object);
+ status = acpi_ns_repair_object(data, expected_btypes,
+ package_index, return_object_ptr);
+ if (ACPI_SUCCESS(status)) {
+ return (AE_OK); /* Repair was successful */
}
- return (status);
-
type_error_exit:
/* Create a string with all expected types for this predefined object */