rspi_dma_transfer 681 drivers/spi/spi-rspi.c return rspi_dma_transfer(rspi, &xfer->tx_sg, rspi_dma_transfer 787 drivers/spi/spi-rspi.c ret = rspi_dma_transfer(rspi, &xfer->tx_sg, NULL); rspi_dma_transfer 819 drivers/spi/spi-rspi.c int ret = rspi_dma_transfer(rspi, NULL, &xfer->rx_sg);