PDC_BUFFER_SIZE
pdc->buf = kmalloc(PDC_BUFFER_SIZE, GFP_KERNEL);
PDC_BUFFER_SIZE,
PDC_BUFFER_SIZE,
pdc->dma_size = PDC_BUFFER_SIZE;
atmel_uart_writel(port, ATMEL_PDC_RCR, PDC_BUFFER_SIZE);
atmel_uart_writel(port, ATMEL_PDC_RNCR, PDC_BUFFER_SIZE);
port->fifosize = PDC_BUFFER_SIZE;