mtk_hsdma_prep_dma_memcpy  944 drivers/dma/mediatek/mtk-hsdma.c 	dd->device_prep_dma_memcpy = mtk_hsdma_prep_dma_memcpy;
mtk_hsdma_prep_dma_memcpy  693 drivers/staging/mt7621-dma/mtk-hsdma.c 	dd->device_prep_dma_memcpy = mtk_hsdma_prep_dma_memcpy;