HSDMA_DESCS_MASK   46 drivers/staging/mt7621-dma/mtk-hsdma.c #define HSDMA_NEXT_DESC(x)		(((x) + 1) & HSDMA_DESCS_MASK)
HSDMA_DESCS_MASK  523 drivers/staging/mt7621-dma/mtk-hsdma.c 	cnt = (drx_idx - next_idx) & HSDMA_DESCS_MASK;
HSDMA_DESCS_MASK  528 drivers/staging/mt7621-dma/mtk-hsdma.c 	chan->rx_idx = (chan->rx_idx + cnt) & HSDMA_DESCS_MASK;