124 	struct dma_chan				*rx_dma_chan;
125 	struct dma_chan				*tx_dma_chan;
911 	struct dma_chan *dma_chan;  in tegra_uart_dma_channel_allocate()  local
917 	dma_chan = dma_request_slave_channel_reason(tup->uport.dev,  in tegra_uart_dma_channel_allocate()
919 	if (IS_ERR(dma_chan)) {  in tegra_uart_dma_channel_allocate()
920 		ret = PTR_ERR(dma_chan);  in tegra_uart_dma_channel_allocate()
933 			dma_release_channel(dma_chan);  in tegra_uart_dma_channel_allocate()
953 	ret = dmaengine_slave_config(dma_chan, &dma_sconfig);  in tegra_uart_dma_channel_allocate()
961 		tup->rx_dma_chan = dma_chan;  in tegra_uart_dma_channel_allocate()
965 		tup->tx_dma_chan = dma_chan;  in tegra_uart_dma_channel_allocate()
972 	dma_release_channel(dma_chan);  in tegra_uart_dma_channel_allocate()
979 	struct dma_chan *dma_chan;  in tegra_uart_dma_channel_free()  local
984 		dma_chan = tup->rx_dma_chan;  in tegra_uart_dma_channel_free()
991 		dma_chan = tup->tx_dma_chan;  in tegra_uart_dma_channel_free()
996 	dma_release_channel(dma_chan);  in tegra_uart_dma_channel_free()