EMLXS_QUE_LOCK
if (mutex_tryenter(&EMLXS_QUE_LOCK(channelno)) == 0) {
mutex_enter(&EMLXS_QUE_LOCK(channelno));
mutex_exit(&EMLXS_QUE_LOCK(channelno));
mutex_exit(&EMLXS_QUE_LOCK(channelno));
mutex_init(&EMLXS_QUE_LOCK(i), NULL, MUTEX_DRIVER,
mutex_destroy(&EMLXS_QUE_LOCK(i));