ZXI2C_FIFO_SIZE
priv->xfer_len = min_t(u16, msg->len - i2c->xfered_len, ZXI2C_FIFO_SIZE);
if (num == 1 && msgs->len >= 2 && (priv->hrv || msgs->len <= ZXI2C_FIFO_SIZE)) {
priv->xfer_len = min_t(u16, msg->len - i2c->xfered_len, ZXI2C_FIFO_SIZE);