VFF_STOP          414 drivers/dma/mediatek/mtk-uart-apdma.c 	mtk_uart_apdma_write(c, VFF_STOP, VFF_STOP_B);
VFF_STOP          421 drivers/dma/mediatek/mtk-uart-apdma.c 	mtk_uart_apdma_write(c, VFF_STOP, VFF_STOP_CLR_B);