-static size_t spi_dma_read(struct KFile *fd, void *_buf, size_t size)
+static size_t spi_dma_read(UNUSED_ARG(struct KFile *, fd), void *_buf, size_t size)
{
size_t count, total_rx = 0;
uint8_t *buf = (uint8_t *)_buf;
{
size_t count, total_rx = 0;
uint8_t *buf = (uint8_t *)_buf;
spi->fd.write = spi_dma_write;
spi->fd.read = spi_dma_read;
spi->fd.flush = spi_dma_flush;
spi->fd.write = spi_dma_write;
spi->fd.read = spi_dma_read;
spi->fd.flush = spi_dma_flush;