ATMEL_SERIAL_RX_SIZE
ATMEL_SERIAL_RX_SIZE, DMA_FROM_DEVICE);
ATMEL_SERIAL_RX_SIZE, DMA_FROM_DEVICE);
ring->head = ATMEL_SERIAL_RX_SIZE - state.residue;
BUG_ON(ring->head > ATMEL_SERIAL_RX_SIZE);
count = ATMEL_SERIAL_RX_SIZE - ring->tail;
if (ring->head >= ATMEL_SERIAL_RX_SIZE)
ATMEL_SERIAL_RX_SIZE, DMA_FROM_DEVICE);
ATMEL_SERIAL_RX_SIZE,
ATMEL_SERIAL_RX_SIZE, ring->buf, &atmel_port->rx_phys);
ATMEL_SERIAL_RX_SIZE,
ATMEL_SERIAL_RX_SIZE / 2,
data = kmalloc(ATMEL_SERIAL_RX_SIZE, GFP_KERNEL);