Symbol: AT91PDC_RESET_FIFO
sys/arch/arm/at91/at91usart.c
615
AT91PDC_RESET_FIFO(sc->sc_iot, sc->sc_ioh, sc->sc_dmat, US_PDC, &sc->sc_rx_fifo, 0);
sys/arch/arm/at91/at91usart.c
616
AT91PDC_RESET_FIFO(sc->sc_iot, sc->sc_ioh, sc->sc_dmat, US_PDC, &sc->sc_tx_fifo, 1);