* The returned pointer to the message frame is not in I/O memory, it is
* allocated from a mempool. But because a MFA is allocated from the
* controller too it is guaranteed that i2o_msg_post() will never fail.
* The returned pointer to the message frame is not in I/O memory, it is
* allocated from a mempool. But because a MFA is allocated from the
* controller too it is guaranteed that i2o_msg_post() will never fail.