SPI_TX_FIFO_UNF 115 drivers/spi/spi-tegra114.c SPI_RX_FIFO_OVF | SPI_TX_FIFO_UNF | SPI_TX_FIFO_OVF) SPI_TX_FIFO_UNF 1262 drivers/spi/spi-tegra114.c (SPI_TX_FIFO_UNF | SPI_TX_FIFO_OVF);