173 	if (dma && dma->tx_chan && ourport->tx_in_progress == S3C24XX_TX_DMA) {  in s3c24xx_serial_stop_tx()
174 		dmaengine_pause(dma->tx_chan);  in s3c24xx_serial_stop_tx()
175 		dmaengine_tx_status(dma->tx_chan, dma->tx_cookie, &state);  in s3c24xx_serial_stop_tx()
176 		dmaengine_terminate_all(dma->tx_chan);  in s3c24xx_serial_stop_tx()
207 	dmaengine_tx_status(dma->tx_chan, dma->tx_cookie, &state);  in s3c24xx_serial_tx_dma_complete()
298 	dma->tx_desc = dmaengine_prep_slave_single(dma->tx_chan,  in s3c24xx_serial_start_tx_dma()
312 	dma_async_issue_pending(dma->tx_chan);  in s3c24xx_serial_start_tx_dma()
330 	if (!ourport->dma || !ourport->dma->tx_chan ||  in s3c24xx_serial_start_next_tx()
348 		if (!ourport->dma || !ourport->dma->tx_chan)  in s3c24xx_serial_start_tx()
352 	if (ourport->dma && ourport->dma->tx_chan) {  in s3c24xx_serial_start_tx()
402 		dmaengine_pause(dma->tx_chan);  in s3c24xx_serial_stop_rx()
716 	if (ourport->dma && ourport->dma->tx_chan &&  in s3c24xx_serial_tx_chars()
892 	dma->tx_chan = dma_request_chan(p->port.dev, "tx");  in s3c24xx_serial_request_dma()
893 	if (IS_ERR(dma->tx_chan)) {  in s3c24xx_serial_request_dma()
895 		ret = PTR_ERR(dma->tx_chan);  in s3c24xx_serial_request_dma()
899 	ret = dma_get_slave_caps(dma->tx_chan, &dma_caps);  in s3c24xx_serial_request_dma()
907 	dmaengine_slave_config(dma->tx_chan, &dma->tx_conf);  in s3c24xx_serial_request_dma()
943 	dma_release_channel(dma->tx_chan);  in s3c24xx_serial_request_dma()
965 	if (dma->tx_chan) {  in s3c24xx_serial_release_dma()
966 		dmaengine_terminate_all(dma->tx_chan);  in s3c24xx_serial_release_dma()
969 		dma_release_channel(dma->tx_chan);  in s3c24xx_serial_release_dma()
970 		dma->tx_chan = NULL;  in s3c24xx_serial_release_dma()