*****************************************************************************/
/*
- * Copyright (C) 2000 - 2006, R. Byron Moore
+ * Copyright (C) 2000 - 2007, R. Byron Moore
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
*
* DESCRIPTION: Implements a semaphore wait with a check to see if the
* semaphore is available immediately. If it is not, the
- * interpreter is released.
+ * interpreter is released before waiting.
*
******************************************************************************/
acpi_status acpi_ex_system_wait_semaphore(acpi_semaphore semaphore, u16 timeout)
*
* RETURN: Status
*
- * DESCRIPTION: Implements a semaphore wait with a check to see if the
- * semaphore is available immediately. If it is not, the
- * interpreter is released.
+ * DESCRIPTION: Implements a mutex wait with a check to see if the
+ * mutex is available immediately. If it is not, the
+ * interpreter is released before waiting.
*
******************************************************************************/
return (status);
}
-/*******************************************************************************
- *
- * FUNCTION: acpi_ex_system_acquire_mutex
- *
- * PARAMETERS: time_desc - Maximum time to wait for the mutex
- * obj_desc - The object descriptor for this op
- *
- * RETURN: Status
- *
- * DESCRIPTION: Provides an access point to perform synchronization operations
- * within the AML. This function will cause a lock to be generated
- * for the Mutex pointed to by obj_desc.
- *
- ******************************************************************************/
-
-acpi_status
-acpi_ex_system_acquire_mutex(union acpi_operand_object * time_desc,
- union acpi_operand_object * obj_desc)
-{
- acpi_status status = AE_OK;
-
- ACPI_FUNCTION_TRACE_PTR(ex_system_acquire_mutex, obj_desc);
-
- if (!obj_desc) {
- return_ACPI_STATUS(AE_BAD_PARAMETER);
- }
-
- /* Support for the _GL_ Mutex object -- go get the global lock */
-
- if (obj_desc->mutex.os_mutex == ACPI_GLOBAL_LOCK) {
- status =
- acpi_ev_acquire_global_lock((u16) time_desc->integer.value);
- return_ACPI_STATUS(status);
- }
-
- status = acpi_ex_system_wait_mutex(obj_desc->mutex.os_mutex,
- (u16) time_desc->integer.value);
- return_ACPI_STATUS(status);
-}
-
-/*******************************************************************************
- *
- * FUNCTION: acpi_ex_system_release_mutex
- *
- * PARAMETERS: obj_desc - The object descriptor for this op
- *
- * RETURN: Status
- *
- * DESCRIPTION: Provides an access point to perform synchronization operations
- * within the AML. This operation is a request to release a
- * previously acquired Mutex. If the Mutex variable is set then
- * it will be decremented.
- *
- ******************************************************************************/
-
-acpi_status acpi_ex_system_release_mutex(union acpi_operand_object *obj_desc)
-{
- acpi_status status = AE_OK;
-
- ACPI_FUNCTION_TRACE(ex_system_release_mutex);
-
- if (!obj_desc) {
- return_ACPI_STATUS(AE_BAD_PARAMETER);
- }
-
- /* Support for the _GL_ Mutex object -- release the global lock */
-
- if (obj_desc->mutex.os_mutex == ACPI_GLOBAL_LOCK) {
- status = acpi_ev_release_global_lock();
- return_ACPI_STATUS(status);
- }
-
- acpi_os_release_mutex(obj_desc->mutex.os_mutex);
- return_ACPI_STATUS(AE_OK);
-}
-
/*******************************************************************************
*
* FUNCTION: acpi_ex_system_signal_event
*
******************************************************************************/
-acpi_status acpi_ex_system_signal_event(union acpi_operand_object *obj_desc)
+acpi_status acpi_ex_system_signal_event(union acpi_operand_object * obj_desc)
{
acpi_status status = AE_OK;