diff options
Diffstat (limited to 'drivers/acpi/acpica/utobject.c')
| -rw-r--r-- | drivers/acpi/acpica/utobject.c | 57 |
1 files changed, 29 insertions, 28 deletions
diff --git a/drivers/acpi/acpica/utobject.c b/drivers/acpi/acpica/utobject.c index fd1fa2749ea..dfa9009bfc8 100644 --- a/drivers/acpi/acpica/utobject.c +++ b/drivers/acpi/acpica/utobject.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2010, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without @@ -69,7 +69,7 @@ acpi_ut_get_element_length(u8 object_type, * PARAMETERS: module_name - Source file name of caller * line_number - Line number of caller * component_id - Component type of caller - * Type - ACPI Type of the new object + * type - ACPI Type of the new object * * RETURN: A new internal object, null on failure * @@ -77,7 +77,7 @@ acpi_ut_get_element_length(u8 object_type, * * NOTE: We always allocate the worst-case object descriptor because * these objects are cached, and we want them to be - * one-size-satisifies-any-request. This in itself may not be + * one-size-satisifies-any-request. This in itself may not be * the most memory efficient, but the efficiency of the object * cache should more than make up for this! * @@ -129,6 +129,7 @@ union acpi_operand_object *acpi_ut_create_internal_object_dbg(const char break; default: + /* All others have no secondary object */ break; } @@ -150,7 +151,7 @@ union acpi_operand_object *acpi_ut_create_internal_object_dbg(const char * * FUNCTION: acpi_ut_create_package_object * - * PARAMETERS: Count - Number of package elements + * PARAMETERS: count - Number of package elements * * RETURN: Pointer to a new Package object, null on failure * @@ -179,7 +180,7 @@ union acpi_operand_object *acpi_ut_create_package_object(u32 count) package_elements = ACPI_ALLOCATE_ZEROED(((acpi_size) count + 1) * sizeof(void *)); if (!package_elements) { - acpi_ut_remove_reference(package_desc); + ACPI_FREE(package_desc); return_PTR(NULL); } @@ -323,11 +324,11 @@ union acpi_operand_object *acpi_ut_create_string_object(acpi_size string_size) * * FUNCTION: acpi_ut_valid_internal_object * - * PARAMETERS: Object - Object to be validated + * PARAMETERS: object - Object to be validated * * RETURN: TRUE if object is valid, FALSE otherwise * - * DESCRIPTION: Validate a pointer to be a union acpi_operand_object + * DESCRIPTION: Validate a pointer to be of type union acpi_operand_object * ******************************************************************************/ @@ -348,13 +349,14 @@ u8 acpi_ut_valid_internal_object(void *object) switch (ACPI_GET_DESCRIPTOR_TYPE(object)) { case ACPI_DESC_TYPE_OPERAND: - /* The object appears to be a valid union acpi_operand_object */ + /* The object appears to be a valid union acpi_operand_object */ return (TRUE); default: + ACPI_DEBUG_PRINT((ACPI_DB_EXEC, - "%p is not not an ACPI operand obj [%s]\n", + "%p is not an ACPI operand obj [%s]\n", object, acpi_ut_get_descriptor_name(object))); break; } @@ -370,9 +372,9 @@ u8 acpi_ut_valid_internal_object(void *object) * line_number - Caller's line number (for error output) * component_id - Caller's component ID (for error output) * - * RETURN: Pointer to newly allocated object descriptor. Null on error + * RETURN: Pointer to newly allocated object descriptor. Null on error * - * DESCRIPTION: Allocate a new object descriptor. Gracefully handle + * DESCRIPTION: Allocate a new object descriptor. Gracefully handle * error conditions. * ******************************************************************************/ @@ -394,7 +396,6 @@ void *acpi_ut_allocate_object_desc_dbg(const char *module_name, /* Mark the descriptor type */ - memset(object, 0, sizeof(union acpi_operand_object)); ACPI_SET_DESCRIPTOR_TYPE(object, ACPI_DESC_TYPE_OPERAND); ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS, "%p Size %X\n", @@ -407,7 +408,7 @@ void *acpi_ut_allocate_object_desc_dbg(const char *module_name, * * FUNCTION: acpi_ut_delete_object_desc * - * PARAMETERS: Object - An Acpi internal object to be deleted + * PARAMETERS: object - An Acpi internal object to be deleted * * RETURN: None. * @@ -419,7 +420,7 @@ void acpi_ut_delete_object_desc(union acpi_operand_object *object) { ACPI_FUNCTION_TRACE_PTR(ut_delete_object_desc, object); - /* Object must be a union acpi_operand_object */ + /* Object must be of type union acpi_operand_object */ if (ACPI_GET_DESCRIPTOR_TYPE(object) != ACPI_DESC_TYPE_OPERAND) { ACPI_ERROR((AE_INFO, @@ -459,25 +460,28 @@ acpi_ut_get_simple_object_size(union acpi_operand_object *internal_object, ACPI_FUNCTION_TRACE_PTR(ut_get_simple_object_size, internal_object); + /* Start with the length of the (external) Acpi object */ + + length = sizeof(union acpi_object); + + /* A NULL object is allowed, can be a legal uninitialized package element */ + + if (!internal_object) { /* - * Handle a null object (Could be a uninitialized package - * element -- which is legal) + * Object is NULL, just return the length of union acpi_object + * (A NULL union acpi_object is an object of all zeroes.) */ - if (!internal_object) { - *obj_length = sizeof(union acpi_object); + *obj_length = ACPI_ROUND_UP_TO_NATIVE_WORD(length); return_ACPI_STATUS(AE_OK); } - /* Start with the length of the Acpi object */ - - length = sizeof(union acpi_object); + /* A Namespace Node should never appear here */ if (ACPI_GET_DESCRIPTOR_TYPE(internal_object) == ACPI_DESC_TYPE_NAMED) { - /* Object is a named object (reference), just return the length */ + /* A namespace node should never get here */ - *obj_length = ACPI_ROUND_UP_TO_NATIVE_WORD(length); - return_ACPI_STATUS(status); + return_ACPI_STATUS(AE_AML_INTERNAL); } /* @@ -509,7 +513,6 @@ acpi_ut_get_simple_object_size(union acpi_operand_object *internal_object, switch (internal_object->reference.class) { case ACPI_REFCLASS_NAME: - /* * Get the actual length of the full pathname to this object. * The reference will be converted to the pathname to the object @@ -525,7 +528,6 @@ acpi_ut_get_simple_object_size(union acpi_operand_object *internal_object, break; default: - /* * No other reference opcodes are supported. * Notably, Locals and Args are not supported, but this may be @@ -554,7 +556,7 @@ acpi_ut_get_simple_object_size(union acpi_operand_object *internal_object, /* * Account for the space required by the object rounded up to the next - * multiple of the machine word size. This keeps each object aligned + * multiple of the machine word size. This keeps each object aligned * on a machine word boundary. (preventing alignment faults on some * machines.) */ @@ -585,7 +587,6 @@ acpi_ut_get_element_length(u8 object_type, switch (object_type) { case ACPI_COPY_TYPE_SIMPLE: - /* * Simple object - just get the size (Null object/entry is handled * here also) and sum it into the running package length |