NO_PAYLOAD_REPLY_LEN
error = xchg_msg(pu, opc, pm, NO_PAYLOAD_REPLY_LEN, wait_reply);
NO_PAYLOAD_REPLY_LEN, wait_reply)) != 0)
NO_PAYLOAD_REPLY_LEN, wait_reply)) != 0)
NO_PAYLOAD_REPLY_LEN, wait_reply)) != 0)
error = xchg_msg(pu, opc, pm, NO_PAYLOAD_REPLY_LEN, wait_reply);
error = xchg_msg(pu, opc, pm, NO_PAYLOAD_REPLY_LEN, wait_reply);