SCO_RX_PACKET_MASK 390 sound/soc/mediatek/common/mtk-btcvsd.c packet_buf_ofs = (bt->rx->packet_w & SCO_RX_PACKET_MASK) * SCO_RX_PACKET_MASK 713 sound/soc/mediatek/common/mtk-btcvsd.c cur_read_idx = (bt->rx->packet_r & SCO_RX_PACKET_MASK) *