at91_usart_spi_can_dma 415 drivers/spi/spi-at91-usart.c if (at91_usart_spi_can_dma(ctlr, spi, xfer) && at91_usart_spi_can_dma 551 drivers/spi/spi-at91-usart.c controller->can_dma = at91_usart_spi_can_dma;