439 	struct sg_table *sgt;  in ep93xx_spi_dma_prepare()  local
456 		sgt = &espi->rx_sgt;  in ep93xx_spi_dma_prepare()
463 		sgt = &espi->tx_sgt;  in ep93xx_spi_dma_prepare()
484 	if (nents != sgt->nents) {  in ep93xx_spi_dma_prepare()
485 		sg_free_table(sgt);  in ep93xx_spi_dma_prepare()
487 		ret = sg_alloc_table(sgt, nents, GFP_KERNEL);  in ep93xx_spi_dma_prepare()
493 	for_each_sg(sgt->sgl, sg, sgt->nents, i) {  in ep93xx_spi_dma_prepare()
513 	nents = dma_map_sg(chan->device->dev, sgt->sgl, sgt->nents, dir);  in ep93xx_spi_dma_prepare()
517 	txd = dmaengine_prep_slave_sg(chan, sgt->sgl, nents, dir, DMA_CTRL_ACK);  in ep93xx_spi_dma_prepare()
519 		dma_unmap_sg(chan->device->dev, sgt->sgl, sgt->nents, dir);  in ep93xx_spi_dma_prepare()
537 	struct sg_table *sgt;  in ep93xx_spi_dma_finish()  local
541 		sgt = &espi->rx_sgt;  in ep93xx_spi_dma_finish()
544 		sgt = &espi->tx_sgt;  in ep93xx_spi_dma_finish()
547 	dma_unmap_sg(chan->device->dev, sgt->sgl, sgt->nents, dir);  in ep93xx_spi_dma_finish()