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ACPICA: Change behavior of object copy for mutex/event objects 

When copying these internal objects, cannot simply copy the
underlying OS object. A new OS object must be created.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
Bob Moore 2009-04-22 10:48:57 +08:00 committed by Len Brown
parent 8eb7b2477c
commit 33a1d461d2
1 changed files with 23 additions and 0 deletions
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23
drivers/acpi/acpica/utcopy.c
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@ -676,6 +676,7 @@ acpi_ut_copy_simple_object(union acpi_operand_object *source_desc,
{
u16 reference_count;
union acpi_operand_object *next_object;
acpi_status status;
/* Save fields from destination that we don't want to overwrite */
@ -768,6 +769,28 @@ acpi_ut_copy_simple_object(union acpi_operand_object *source_desc,
}
break;
/*
* For Mutex and Event objects, we cannot simply copy the underlying
* OS object. We must create a new one.
*/
case ACPI_TYPE_MUTEX:
status = acpi_os_create_mutex(&dest_desc->mutex.os_mutex);
if (ACPI_FAILURE(status)) {
return status;
}
break;
case ACPI_TYPE_EVENT:
status = acpi_os_create_semaphore(ACPI_NO_UNIT_LIMIT, 0,
&dest_desc->event.
os_semaphore);
if (ACPI_FAILURE(status)) {
return status;
}
break;
default:
/* Nothing to do for other simple objects */
break;