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ACPICA: Fix a long-standing bug in local cache 

Since 20060317, the pointer to next object is the first element in
 its common header.  Remove bogus LinkOffset from ACPI_MEMORY_LIST
 and directly use NextObject.

Signed-off-by: Jung-uk Kim <jkim@FreeBSD.org>
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>
This commit is contained in:
Jung-uk Kim 2013-03-08 09:21:02 +00:00 committed by Rafael J. Wysocki
parent 98b5c9934c
commit 3cf24497f4
2 changed files with 7 additions and 14 deletions
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20
drivers/acpi/acpica/utcache.c
View File

@ -85,7 +85,6 @@ acpi_os_create_cache(char *cache_name,
/* Populate the cache object and return it */
ACPI_MEMSET(cache, 0, sizeof(struct acpi_memory_list));
cache->link_offset = 8;
cache->list_name = cache_name;
cache->object_size = object_size;
cache->max_depth = max_depth;
@ -108,7 +107,7 @@ acpi_os_create_cache(char *cache_name,
acpi_status acpi_os_purge_cache(struct acpi_memory_list * cache)
{
char *next;
void *next;
acpi_status status;
ACPI_FUNCTION_ENTRY();
@ -128,10 +127,9 @@ acpi_status acpi_os_purge_cache(struct acpi_memory_list * cache)
/* Delete and unlink one cached state object */
next = *(ACPI_CAST_INDIRECT_PTR(char,
&(((char *)cache->
list_head)[cache->
link_offset])));
next =
((struct acpi_object_common *)cache->list_head)->
next_object;
ACPI_FREE(cache->list_head);
cache->list_head = next;
@ -221,9 +219,7 @@ acpi_os_release_object(struct acpi_memory_list * cache, void *object)
/* Put the object at the head of the cache list */
*(ACPI_CAST_INDIRECT_PTR(char,
&(((char *)object)[cache->
link_offset]))) =
((struct acpi_object_common *)object)->next_object =
cache->list_head;
cache->list_head = object;
cache->current_depth++;
@ -272,10 +268,8 @@ void *acpi_os_acquire_object(struct acpi_memory_list *cache)
/* There is an object available, use it */
object = cache->list_head;
cache->list_head = *(ACPI_CAST_INDIRECT_PTR(char,
&(((char *)
object)[cache->
link_offset])));
cache->list_head =
((struct acpi_object_common *)object)->next_object;
cache->current_depth--;

1
include/acpi/actypes.h
View File

@ -1128,7 +1128,6 @@ struct acpi_memory_list {
u16 object_size;
u16 max_depth;
u16 current_depth;
u16 link_offset;
#ifdef ACPI_DBG_TRACK_ALLOCATIONS