LTQ_SPI_ID_TXFS_S 64 drivers/spi/spi-lantiq-ssc.c #define LTQ_SPI_ID_TXFS_M (0x3F << LTQ_SPI_ID_TXFS_S) LTQ_SPI_ID_TXFS_S 918 drivers/spi/spi-lantiq-ssc.c spi->tx_fifo_size = (id & LTQ_SPI_ID_TXFS_M) >> LTQ_SPI_ID_TXFS_S;