M_TX_RX_FIFO_SIZE
.max_comb_1st_msg_len = M_TX_RX_FIFO_SIZE,
#define M_RX_FIFO_MAX_THLD_VALUE (M_TX_RX_FIFO_SIZE - 1)
tx_bytes = min_t(unsigned int, tx_bytes, M_TX_RX_FIFO_SIZE);
tx_bytes = min_t(unsigned int, msg->len, M_TX_RX_FIFO_SIZE - 1);