atmel_use_dma_tx 595 drivers/tty/serial/atmel_serial.c if (atmel_use_pdc_tx(port) || atmel_use_dma_tx(port)) atmel_use_dma_tx 1796 drivers/tty/serial/atmel_serial.c if (atmel_use_dma_tx(port)) { atmel_use_dma_tx 1948 drivers/tty/serial/atmel_serial.c if (atmel_use_dma_tx(port))