sci_request_dma_chan 1592 drivers/tty/serial/sh-sci.c 	chan = sci_request_dma_chan(port, DMA_MEM_TO_DEV);
sci_request_dma_chan 1613 drivers/tty/serial/sh-sci.c 	chan = sci_request_dma_chan(port, DMA_DEV_TO_MEM);