560     OSMutex *prev = thread->mutexQueueTail;  in OSi_EnqueueTail()  local
564     if (!prev)  in OSi_EnqueueTail()
570         prev->next = mutex;  in OSi_EnqueueTail()
573     mutex->prev = prev;  in OSi_EnqueueTail()
577     OSMutex *prev = thread->mutexQueue.tail;  in OSi_EnqueueTail()
581     if (!prev)  in OSi_EnqueueTail()
587         prev->link.next = mutex;  in OSi_EnqueueTail()
590     mutex->link.prev = prev;  in OSi_EnqueueTail()
611     OSMutex *prev = mutex->prev;  in OSi_DequeueItem()  local
617         thread->mutexQueueTail = prev;  in OSi_DequeueItem()
621         next->prev = prev;  in OSi_DequeueItem()
624     if (!prev)  in OSi_DequeueItem()
630         prev->next = next;  in OSi_DequeueItem()
634     OSMutex *prev = mutex->link.prev;  in OSi_DequeueItem()
640         thread->mutexQueue.tail = prev;  in OSi_DequeueItem()
644         next->link.prev = prev;  in OSi_DequeueItem()
647     if (!prev)  in OSi_DequeueItem()
653         prev->link.next = next;  in OSi_DequeueItem()
681         next->prev = NULL;  in OSi_DequeueHead()
697         next->link.prev = NULL;  in OSi_DequeueHead()