TRF7970A_FIFO_SIZE 722 drivers/nfc/trf7970a.c len = TRF7970A_FIFO_SIZE - fifo_bytes; TRF7970A_FIFO_SIZE 1545 drivers/nfc/trf7970a.c len = min_t(int, skb->len, TRF7970A_FIFO_SIZE);