mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-12-06 02:24:14 +08:00
1fad87385e
ACPICA commit dfa394471f6c01b2ee9433dbc143ec70cb9bca72 Mostly indentation inconsistencies across the code. Split some long lines, etc. Link: https://github.com/acpica/acpica/commit/dfa39447 Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
760 lines
20 KiB
C
760 lines
20 KiB
C
/*******************************************************************************
|
|
*
|
|
* Module Name: utdelete - object deletion and reference count utilities
|
|
*
|
|
******************************************************************************/
|
|
|
|
/*
|
|
* Copyright (C) 2000 - 2015, Intel Corp.
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions, and the following disclaimer,
|
|
* without modification.
|
|
* 2. Redistributions in binary form must reproduce at minimum a disclaimer
|
|
* substantially similar to the "NO WARRANTY" disclaimer below
|
|
* ("Disclaimer") and any redistribution must be conditioned upon
|
|
* including a substantially similar Disclaimer requirement for further
|
|
* binary redistribution.
|
|
* 3. Neither the names of the above-listed copyright holders nor the names
|
|
* of any contributors may be used to endorse or promote products derived
|
|
* from this software without specific prior written permission.
|
|
*
|
|
* Alternatively, this software may be distributed under the terms of the
|
|
* GNU General Public License ("GPL") version 2 as published by the Free
|
|
* Software Foundation.
|
|
*
|
|
* NO WARRANTY
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
|
|
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
|
* HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
|
|
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
|
|
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
* POSSIBILITY OF SUCH DAMAGES.
|
|
*/
|
|
|
|
#include <acpi/acpi.h>
|
|
#include "accommon.h"
|
|
#include "acinterp.h"
|
|
#include "acnamesp.h"
|
|
#include "acevents.h"
|
|
|
|
#define _COMPONENT ACPI_UTILITIES
|
|
ACPI_MODULE_NAME("utdelete")
|
|
|
|
/* Local prototypes */
|
|
static void acpi_ut_delete_internal_obj(union acpi_operand_object *object);
|
|
|
|
static void
|
|
acpi_ut_update_ref_count(union acpi_operand_object *object, u32 action);
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_ut_delete_internal_obj
|
|
*
|
|
* PARAMETERS: object - Object to be deleted
|
|
*
|
|
* RETURN: None
|
|
*
|
|
* DESCRIPTION: Low level object deletion, after reference counts have been
|
|
* updated (All reference counts, including sub-objects!)
|
|
*
|
|
******************************************************************************/
|
|
|
|
static void acpi_ut_delete_internal_obj(union acpi_operand_object *object)
|
|
{
|
|
void *obj_pointer = NULL;
|
|
union acpi_operand_object *handler_desc;
|
|
union acpi_operand_object *second_desc;
|
|
union acpi_operand_object *next_desc;
|
|
union acpi_operand_object *start_desc;
|
|
union acpi_operand_object **last_obj_ptr;
|
|
|
|
ACPI_FUNCTION_TRACE_PTR(ut_delete_internal_obj, object);
|
|
|
|
if (!object) {
|
|
return_VOID;
|
|
}
|
|
|
|
/*
|
|
* Must delete or free any pointers within the object that are not
|
|
* actual ACPI objects (for example, a raw buffer pointer).
|
|
*/
|
|
switch (object->common.type) {
|
|
case ACPI_TYPE_STRING:
|
|
|
|
ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS,
|
|
"**** String %p, ptr %p\n", object,
|
|
object->string.pointer));
|
|
|
|
/* Free the actual string buffer */
|
|
|
|
if (!(object->common.flags & AOPOBJ_STATIC_POINTER)) {
|
|
|
|
/* But only if it is NOT a pointer into an ACPI table */
|
|
|
|
obj_pointer = object->string.pointer;
|
|
}
|
|
break;
|
|
|
|
case ACPI_TYPE_BUFFER:
|
|
|
|
ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS,
|
|
"**** Buffer %p, ptr %p\n", object,
|
|
object->buffer.pointer));
|
|
|
|
/* Free the actual buffer */
|
|
|
|
if (!(object->common.flags & AOPOBJ_STATIC_POINTER)) {
|
|
|
|
/* But only if it is NOT a pointer into an ACPI table */
|
|
|
|
obj_pointer = object->buffer.pointer;
|
|
}
|
|
break;
|
|
|
|
case ACPI_TYPE_PACKAGE:
|
|
|
|
ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS,
|
|
" **** Package of count %X\n",
|
|
object->package.count));
|
|
|
|
/*
|
|
* Elements of the package are not handled here, they are deleted
|
|
* separately
|
|
*/
|
|
|
|
/* Free the (variable length) element pointer array */
|
|
|
|
obj_pointer = object->package.elements;
|
|
break;
|
|
|
|
/*
|
|
* These objects have a possible list of notify handlers.
|
|
* Device object also may have a GPE block.
|
|
*/
|
|
case ACPI_TYPE_DEVICE:
|
|
|
|
if (object->device.gpe_block) {
|
|
(void)acpi_ev_delete_gpe_block(object->device.
|
|
gpe_block);
|
|
}
|
|
|
|
/*lint -fallthrough */
|
|
|
|
case ACPI_TYPE_PROCESSOR:
|
|
case ACPI_TYPE_THERMAL:
|
|
|
|
/* Walk the address handler list for this object */
|
|
|
|
handler_desc = object->common_notify.handler;
|
|
while (handler_desc) {
|
|
next_desc = handler_desc->address_space.next;
|
|
acpi_ut_remove_reference(handler_desc);
|
|
handler_desc = next_desc;
|
|
}
|
|
break;
|
|
|
|
case ACPI_TYPE_MUTEX:
|
|
|
|
ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS,
|
|
"***** Mutex %p, OS Mutex %p\n",
|
|
object, object->mutex.os_mutex));
|
|
|
|
if (object == acpi_gbl_global_lock_mutex) {
|
|
|
|
/* Global Lock has extra semaphore */
|
|
|
|
(void)
|
|
acpi_os_delete_semaphore
|
|
(acpi_gbl_global_lock_semaphore);
|
|
acpi_gbl_global_lock_semaphore = NULL;
|
|
|
|
acpi_os_delete_mutex(object->mutex.os_mutex);
|
|
acpi_gbl_global_lock_mutex = NULL;
|
|
} else {
|
|
acpi_ex_unlink_mutex(object);
|
|
acpi_os_delete_mutex(object->mutex.os_mutex);
|
|
}
|
|
break;
|
|
|
|
case ACPI_TYPE_EVENT:
|
|
|
|
ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS,
|
|
"***** Event %p, OS Semaphore %p\n",
|
|
object, object->event.os_semaphore));
|
|
|
|
(void)acpi_os_delete_semaphore(object->event.os_semaphore);
|
|
object->event.os_semaphore = NULL;
|
|
break;
|
|
|
|
case ACPI_TYPE_METHOD:
|
|
|
|
ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS,
|
|
"***** Method %p\n", object));
|
|
|
|
/* Delete the method mutex if it exists */
|
|
|
|
if (object->method.mutex) {
|
|
acpi_os_delete_mutex(object->method.mutex->mutex.
|
|
os_mutex);
|
|
acpi_ut_delete_object_desc(object->method.mutex);
|
|
object->method.mutex = NULL;
|
|
}
|
|
|
|
if (object->method.node) {
|
|
object->method.node = NULL;
|
|
}
|
|
break;
|
|
|
|
case ACPI_TYPE_REGION:
|
|
|
|
ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS,
|
|
"***** Region %p\n", object));
|
|
|
|
/*
|
|
* Update address_range list. However, only permanent regions
|
|
* are installed in this list. (Not created within a method)
|
|
*/
|
|
if (!(object->region.node->flags & ANOBJ_TEMPORARY)) {
|
|
acpi_ut_remove_address_range(object->region.space_id,
|
|
object->region.node);
|
|
}
|
|
|
|
second_desc = acpi_ns_get_secondary_object(object);
|
|
if (second_desc) {
|
|
/*
|
|
* Free the region_context if and only if the handler is one of the
|
|
* default handlers -- and therefore, we created the context object
|
|
* locally, it was not created by an external caller.
|
|
*/
|
|
handler_desc = object->region.handler;
|
|
if (handler_desc) {
|
|
next_desc =
|
|
handler_desc->address_space.region_list;
|
|
start_desc = next_desc;
|
|
last_obj_ptr =
|
|
&handler_desc->address_space.region_list;
|
|
|
|
/* Remove the region object from the handler list */
|
|
|
|
while (next_desc) {
|
|
if (next_desc == object) {
|
|
*last_obj_ptr =
|
|
next_desc->region.next;
|
|
break;
|
|
}
|
|
|
|
/* Walk the linked list of handlers */
|
|
|
|
last_obj_ptr = &next_desc->region.next;
|
|
next_desc = next_desc->region.next;
|
|
|
|
/* Prevent infinite loop if list is corrupted */
|
|
|
|
if (next_desc == start_desc) {
|
|
ACPI_ERROR((AE_INFO,
|
|
"Circular region list in address handler object %p",
|
|
handler_desc));
|
|
return_VOID;
|
|
}
|
|
}
|
|
|
|
if (handler_desc->address_space.handler_flags &
|
|
ACPI_ADDR_HANDLER_DEFAULT_INSTALLED) {
|
|
|
|
/* Deactivate region and free region context */
|
|
|
|
if (handler_desc->address_space.setup) {
|
|
(void)handler_desc->
|
|
address_space.setup(object,
|
|
ACPI_REGION_DEACTIVATE,
|
|
handler_desc->
|
|
address_space.
|
|
context,
|
|
&second_desc->
|
|
extra.
|
|
region_context);
|
|
}
|
|
}
|
|
|
|
acpi_ut_remove_reference(handler_desc);
|
|
}
|
|
|
|
/* Now we can free the Extra object */
|
|
|
|
acpi_ut_delete_object_desc(second_desc);
|
|
}
|
|
break;
|
|
|
|
case ACPI_TYPE_BUFFER_FIELD:
|
|
|
|
ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS,
|
|
"***** Buffer Field %p\n", object));
|
|
|
|
second_desc = acpi_ns_get_secondary_object(object);
|
|
if (second_desc) {
|
|
acpi_ut_delete_object_desc(second_desc);
|
|
}
|
|
break;
|
|
|
|
case ACPI_TYPE_LOCAL_BANK_FIELD:
|
|
|
|
ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS,
|
|
"***** Bank Field %p\n", object));
|
|
|
|
second_desc = acpi_ns_get_secondary_object(object);
|
|
if (second_desc) {
|
|
acpi_ut_delete_object_desc(second_desc);
|
|
}
|
|
break;
|
|
|
|
default:
|
|
|
|
break;
|
|
}
|
|
|
|
/* Free any allocated memory (pointer within the object) found above */
|
|
|
|
if (obj_pointer) {
|
|
ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS,
|
|
"Deleting Object Subptr %p\n", obj_pointer));
|
|
ACPI_FREE(obj_pointer);
|
|
}
|
|
|
|
/* Now the object can be safely deleted */
|
|
|
|
ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS, "Deleting Object %p [%s]\n",
|
|
object, acpi_ut_get_object_type_name(object)));
|
|
|
|
acpi_ut_delete_object_desc(object);
|
|
return_VOID;
|
|
}
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_ut_delete_internal_object_list
|
|
*
|
|
* PARAMETERS: obj_list - Pointer to the list to be deleted
|
|
*
|
|
* RETURN: None
|
|
*
|
|
* DESCRIPTION: This function deletes an internal object list, including both
|
|
* simple objects and package objects
|
|
*
|
|
******************************************************************************/
|
|
|
|
void acpi_ut_delete_internal_object_list(union acpi_operand_object **obj_list)
|
|
{
|
|
union acpi_operand_object **internal_obj;
|
|
|
|
ACPI_FUNCTION_ENTRY();
|
|
|
|
/* Walk the null-terminated internal list */
|
|
|
|
for (internal_obj = obj_list; *internal_obj; internal_obj++) {
|
|
acpi_ut_remove_reference(*internal_obj);
|
|
}
|
|
|
|
/* Free the combined parameter pointer list and object array */
|
|
|
|
ACPI_FREE(obj_list);
|
|
return;
|
|
}
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_ut_update_ref_count
|
|
*
|
|
* PARAMETERS: object - Object whose ref count is to be updated
|
|
* action - What to do (REF_INCREMENT or REF_DECREMENT)
|
|
*
|
|
* RETURN: None. Sets new reference count within the object
|
|
*
|
|
* DESCRIPTION: Modify the reference count for an internal acpi object
|
|
*
|
|
******************************************************************************/
|
|
|
|
static void
|
|
acpi_ut_update_ref_count(union acpi_operand_object *object, u32 action)
|
|
{
|
|
u16 original_count;
|
|
u16 new_count = 0;
|
|
acpi_cpu_flags lock_flags;
|
|
|
|
ACPI_FUNCTION_NAME(ut_update_ref_count);
|
|
|
|
if (!object) {
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* Always get the reference count lock. Note: Interpreter and/or
|
|
* Namespace is not always locked when this function is called.
|
|
*/
|
|
lock_flags = acpi_os_acquire_lock(acpi_gbl_reference_count_lock);
|
|
original_count = object->common.reference_count;
|
|
|
|
/* Perform the reference count action (increment, decrement) */
|
|
|
|
switch (action) {
|
|
case REF_INCREMENT:
|
|
|
|
new_count = original_count + 1;
|
|
object->common.reference_count = new_count;
|
|
acpi_os_release_lock(acpi_gbl_reference_count_lock, lock_flags);
|
|
|
|
/* The current reference count should never be zero here */
|
|
|
|
if (!original_count) {
|
|
ACPI_WARNING((AE_INFO,
|
|
"Obj %p, Reference Count was zero before increment\n",
|
|
object));
|
|
}
|
|
|
|
ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS,
|
|
"Obj %p Type %.2X Refs %.2X [Incremented]\n",
|
|
object, object->common.type, new_count));
|
|
break;
|
|
|
|
case REF_DECREMENT:
|
|
|
|
/* The current reference count must be non-zero */
|
|
|
|
if (original_count) {
|
|
new_count = original_count - 1;
|
|
object->common.reference_count = new_count;
|
|
}
|
|
|
|
acpi_os_release_lock(acpi_gbl_reference_count_lock, lock_flags);
|
|
|
|
if (!original_count) {
|
|
ACPI_WARNING((AE_INFO,
|
|
"Obj %p, Reference Count is already zero, cannot decrement\n",
|
|
object));
|
|
}
|
|
|
|
ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS,
|
|
"Obj %p Type %.2X Refs %.2X [Decremented]\n",
|
|
object, object->common.type, new_count));
|
|
|
|
/* Actually delete the object on a reference count of zero */
|
|
|
|
if (new_count == 0) {
|
|
acpi_ut_delete_internal_obj(object);
|
|
}
|
|
break;
|
|
|
|
default:
|
|
|
|
acpi_os_release_lock(acpi_gbl_reference_count_lock, lock_flags);
|
|
ACPI_ERROR((AE_INFO, "Unknown Reference Count action (0x%X)",
|
|
action));
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* Sanity check the reference count, for debug purposes only.
|
|
* (A deleted object will have a huge reference count)
|
|
*/
|
|
if (new_count > ACPI_MAX_REFERENCE_COUNT) {
|
|
ACPI_WARNING((AE_INFO,
|
|
"Large Reference Count (0x%X) in object %p, Type=0x%.2X",
|
|
new_count, object, object->common.type));
|
|
}
|
|
}
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_ut_update_object_reference
|
|
*
|
|
* PARAMETERS: object - Increment ref count for this object
|
|
* and all sub-objects
|
|
* action - Either REF_INCREMENT or REF_DECREMENT
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Increment the object reference count
|
|
*
|
|
* Object references are incremented when:
|
|
* 1) An object is attached to a Node (namespace object)
|
|
* 2) An object is copied (all subobjects must be incremented)
|
|
*
|
|
* Object references are decremented when:
|
|
* 1) An object is detached from an Node
|
|
*
|
|
******************************************************************************/
|
|
|
|
acpi_status
|
|
acpi_ut_update_object_reference(union acpi_operand_object *object, u16 action)
|
|
{
|
|
acpi_status status = AE_OK;
|
|
union acpi_generic_state *state_list = NULL;
|
|
union acpi_operand_object *next_object = NULL;
|
|
union acpi_operand_object *prev_object;
|
|
union acpi_generic_state *state;
|
|
u32 i;
|
|
|
|
ACPI_FUNCTION_NAME(ut_update_object_reference);
|
|
|
|
while (object) {
|
|
|
|
/* Make sure that this isn't a namespace handle */
|
|
|
|
if (ACPI_GET_DESCRIPTOR_TYPE(object) == ACPI_DESC_TYPE_NAMED) {
|
|
ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS,
|
|
"Object %p is NS handle\n", object));
|
|
return (AE_OK);
|
|
}
|
|
|
|
/*
|
|
* All sub-objects must have their reference count incremented
|
|
* also. Different object types have different subobjects.
|
|
*/
|
|
switch (object->common.type) {
|
|
case ACPI_TYPE_DEVICE:
|
|
case ACPI_TYPE_PROCESSOR:
|
|
case ACPI_TYPE_POWER:
|
|
case ACPI_TYPE_THERMAL:
|
|
/*
|
|
* Update the notify objects for these types (if present)
|
|
* Two lists, system and device notify handlers.
|
|
*/
|
|
for (i = 0; i < ACPI_NUM_NOTIFY_TYPES; i++) {
|
|
prev_object =
|
|
object->common_notify.notify_list[i];
|
|
while (prev_object) {
|
|
next_object =
|
|
prev_object->notify.next[i];
|
|
acpi_ut_update_ref_count(prev_object,
|
|
action);
|
|
prev_object = next_object;
|
|
}
|
|
}
|
|
break;
|
|
|
|
case ACPI_TYPE_PACKAGE:
|
|
/*
|
|
* We must update all the sub-objects of the package,
|
|
* each of whom may have their own sub-objects.
|
|
*/
|
|
for (i = 0; i < object->package.count; i++) {
|
|
/*
|
|
* Null package elements are legal and can be simply
|
|
* ignored.
|
|
*/
|
|
next_object = object->package.elements[i];
|
|
if (!next_object) {
|
|
continue;
|
|
}
|
|
|
|
switch (next_object->common.type) {
|
|
case ACPI_TYPE_INTEGER:
|
|
case ACPI_TYPE_STRING:
|
|
case ACPI_TYPE_BUFFER:
|
|
/*
|
|
* For these very simple sub-objects, we can just
|
|
* update the reference count here and continue.
|
|
* Greatly increases performance of this operation.
|
|
*/
|
|
acpi_ut_update_ref_count(next_object,
|
|
action);
|
|
break;
|
|
|
|
default:
|
|
/*
|
|
* For complex sub-objects, push them onto the stack
|
|
* for later processing (this eliminates recursion.)
|
|
*/
|
|
status =
|
|
acpi_ut_create_update_state_and_push
|
|
(next_object, action, &state_list);
|
|
if (ACPI_FAILURE(status)) {
|
|
goto error_exit;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
next_object = NULL;
|
|
break;
|
|
|
|
case ACPI_TYPE_BUFFER_FIELD:
|
|
|
|
next_object = object->buffer_field.buffer_obj;
|
|
break;
|
|
|
|
case ACPI_TYPE_LOCAL_REGION_FIELD:
|
|
|
|
next_object = object->field.region_obj;
|
|
break;
|
|
|
|
case ACPI_TYPE_LOCAL_BANK_FIELD:
|
|
|
|
next_object = object->bank_field.bank_obj;
|
|
status =
|
|
acpi_ut_create_update_state_and_push(object->
|
|
bank_field.
|
|
region_obj,
|
|
action,
|
|
&state_list);
|
|
if (ACPI_FAILURE(status)) {
|
|
goto error_exit;
|
|
}
|
|
break;
|
|
|
|
case ACPI_TYPE_LOCAL_INDEX_FIELD:
|
|
|
|
next_object = object->index_field.index_obj;
|
|
status =
|
|
acpi_ut_create_update_state_and_push(object->
|
|
index_field.
|
|
data_obj,
|
|
action,
|
|
&state_list);
|
|
if (ACPI_FAILURE(status)) {
|
|
goto error_exit;
|
|
}
|
|
break;
|
|
|
|
case ACPI_TYPE_LOCAL_REFERENCE:
|
|
/*
|
|
* The target of an Index (a package, string, or buffer) or a named
|
|
* reference must track changes to the ref count of the index or
|
|
* target object.
|
|
*/
|
|
if ((object->reference.class == ACPI_REFCLASS_INDEX) ||
|
|
(object->reference.class == ACPI_REFCLASS_NAME)) {
|
|
next_object = object->reference.object;
|
|
}
|
|
break;
|
|
|
|
case ACPI_TYPE_REGION:
|
|
default:
|
|
|
|
break; /* No subobjects for all other types */
|
|
}
|
|
|
|
/*
|
|
* Now we can update the count in the main object. This can only
|
|
* happen after we update the sub-objects in case this causes the
|
|
* main object to be deleted.
|
|
*/
|
|
acpi_ut_update_ref_count(object, action);
|
|
object = NULL;
|
|
|
|
/* Move on to the next object to be updated */
|
|
|
|
if (next_object) {
|
|
object = next_object;
|
|
next_object = NULL;
|
|
} else if (state_list) {
|
|
state = acpi_ut_pop_generic_state(&state_list);
|
|
object = state->update.object;
|
|
acpi_ut_delete_generic_state(state);
|
|
}
|
|
}
|
|
|
|
return (AE_OK);
|
|
|
|
error_exit:
|
|
|
|
ACPI_EXCEPTION((AE_INFO, status,
|
|
"Could not update object reference count"));
|
|
|
|
/* Free any stacked Update State objects */
|
|
|
|
while (state_list) {
|
|
state = acpi_ut_pop_generic_state(&state_list);
|
|
acpi_ut_delete_generic_state(state);
|
|
}
|
|
|
|
return (status);
|
|
}
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_ut_add_reference
|
|
*
|
|
* PARAMETERS: object - Object whose reference count is to be
|
|
* incremented
|
|
*
|
|
* RETURN: None
|
|
*
|
|
* DESCRIPTION: Add one reference to an ACPI object
|
|
*
|
|
******************************************************************************/
|
|
|
|
void acpi_ut_add_reference(union acpi_operand_object *object)
|
|
{
|
|
|
|
ACPI_FUNCTION_NAME(ut_add_reference);
|
|
|
|
/* Ensure that we have a valid object */
|
|
|
|
if (!acpi_ut_valid_internal_object(object)) {
|
|
return;
|
|
}
|
|
|
|
ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS,
|
|
"Obj %p Current Refs=%X [To Be Incremented]\n",
|
|
object, object->common.reference_count));
|
|
|
|
/* Increment the reference count */
|
|
|
|
(void)acpi_ut_update_object_reference(object, REF_INCREMENT);
|
|
return;
|
|
}
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_ut_remove_reference
|
|
*
|
|
* PARAMETERS: object - Object whose ref count will be decremented
|
|
*
|
|
* RETURN: None
|
|
*
|
|
* DESCRIPTION: Decrement the reference count of an ACPI internal object
|
|
*
|
|
******************************************************************************/
|
|
|
|
void acpi_ut_remove_reference(union acpi_operand_object *object)
|
|
{
|
|
|
|
ACPI_FUNCTION_NAME(ut_remove_reference);
|
|
|
|
/*
|
|
* Allow a NULL pointer to be passed in, just ignore it. This saves
|
|
* each caller from having to check. Also, ignore NS nodes.
|
|
*/
|
|
if (!object ||
|
|
(ACPI_GET_DESCRIPTOR_TYPE(object) == ACPI_DESC_TYPE_NAMED)) {
|
|
return;
|
|
}
|
|
|
|
/* Ensure that we have a valid object */
|
|
|
|
if (!acpi_ut_valid_internal_object(object)) {
|
|
return;
|
|
}
|
|
|
|
ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS,
|
|
"Obj %p Current Refs=%X [To Be Decremented]\n",
|
|
object, object->common.reference_count));
|
|
|
|
/*
|
|
* Decrement the reference count, and only actually delete the object
|
|
* if the reference count becomes 0. (Must also decrement the ref count
|
|
* of all subobjects!)
|
|
*/
|
|
(void)acpi_ut_update_object_reference(object, REF_DECREMENT);
|
|
return;
|
|
}
|