i2c/busses/i2c-qup.c

276 	struct			qup_i2c_bam brx;
642 	if (qup->brx.dma)
643 		dma_release_channel(qup->brx.dma);
645 	qup->brx.dma = NULL;
662 	if (!qup->brx.dma) {
663 		qup->brx.dma = dma_request_chan(qup->dev, "rx");
664 		if (IS_ERR(qup->brx.dma)) {
666 			err = PTR_ERR(qup->brx.dma);
667 			qup->brx.dma = NULL;
696 			ret = qup_sg_set_buf(&qup->brx.sg[qup->brx.sg_cnt++],
697 					     &qup->brx.tag.start[0],
703 			ret = qup_sg_set_buf(&qup->brx.sg[qup->brx.sg_cnt++],
755 	u32 tx_cnt = qup->btx.sg_cnt, rx_cnt = qup->brx.sg_cnt;
764 		ret = qup_sg_set_buf(&qup->brx.sg[rx_cnt++],
765 				     &qup->brx.tag.start[0],
800 		rxd = dmaengine_prep_slave_sg(qup->brx.dma, qup->brx.sg,
820 		dma_async_issue_pending(qup->brx.dma);
848 		dma_unmap_sg(qup->dev, qup->brx.sg, rx_cnt,
857 	qup->brx.sg_cnt = 0;
911 		    qup->brx.sg_cnt > qup->max_xfer_sg_len ||
1747 		qup->brx.sg = devm_kcalloc(&pdev->dev,
1748 					   blocks, sizeof(*qup->brx.sg),
1750 		if (!qup->brx.sg) {
1754 		sg_init_table(qup->brx.sg, blocks);
1766 		qup->brx.tag.start = devm_kzalloc(&pdev->dev, 2, GFP_KERNEL);
1767 		if (!qup->brx.tag.start) {
1945 	if (qup->brx.dma)
1946 		dma_release_channel(qup->brx.dma);
1956 		dma_release_channel(qup->brx.dma);