180 	if (threaded && stm32_port->rx_ch) {  in stm32_pending_rx()
181 		status = dmaengine_tx_status(stm32_port->rx_ch,  in stm32_pending_rx()
182 					     stm32_port->rx_ch->cookie,  in stm32_pending_rx()
202 	if (stm32_port->rx_ch) {  in stm32_get_char()
471 	if ((sr & USART_SR_RXNE) && !(stm32_port->rx_ch))  in stm32_interrupt()
479 	if (stm32_port->rx_ch)  in stm32_interrupt()
492 	if (stm32_port->rx_ch)  in stm32_threaded_interrupt()
743 	if (ofs->rtor != UNDEF_REG && (stm32_port->rx_ch ||  in stm32_set_termios()
755 		if (!stm32_port->rx_ch)  in stm32_set_termios()
819 	if (stm32_port->rx_ch)  in stm32_set_termios()
1022 	stm32port->rx_ch = dma_request_slave_channel(dev, "rx");  in stm32_of_dma_rx_probe()
1023 	if (!stm32port->rx_ch) {  in stm32_of_dma_rx_probe()
1040 	ret = dmaengine_slave_config(stm32port->rx_ch, &config);  in stm32_of_dma_rx_probe()
1048 	desc = dmaengine_prep_dma_cyclic(stm32port->rx_ch,  in stm32_of_dma_rx_probe()
1066 	dma_async_issue_pending(stm32port->rx_ch);  in stm32_of_dma_rx_probe()
1076 	dma_release_channel(stm32port->rx_ch);  in stm32_of_dma_rx_probe()
1077 	stm32port->rx_ch = NULL;  in stm32_of_dma_rx_probe()
1212 	if (stm32_port->rx_ch)  in stm32_serial_remove()
1213 		dma_release_channel(stm32_port->rx_ch);  in stm32_serial_remove()