AFAICS mptctl_lock() and mptctl_unlock() are just buggy implementations of down() and up(). At least the 'current->state = TASK_UNINTERRUPTIBLE' must be moved into the while(1) loop, or both function could be replaced with a semaphore. -- Manfred - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] Please read the FAQ at http://www.tux.org/lkml/