MS_TPC_WRITE_REG
memstick_init_req(req, MS_TPC_WRITE_REG, buf, len);
case MS_TPC_WRITE_REG:
memstick_init_req(&card->current_mrq, MS_TPC_WRITE_REG,
memstick_init_req(&card->current_mrq, MS_TPC_WRITE_REG, ¶m,