diff --git a/drivers/tty/serial/imx.c b/drivers/tty/serial/imx.c
index 20a83712329b2478c3668b6cb30cc22d12ddb673..a42f386e71099ff947d4b1c05f66433020e19e63 100644
--- a/drivers/tty/serial/imx.c
+++ b/drivers/tty/serial/imx.c
@@ -716,8 +716,6 @@ static void imx_disable_rx_int(struct imx_port *sport)
 {
 	unsigned long temp;
 
-	sport->dma_is_rxing = 1;
-
 	/* disable the receiver ready and aging timer interrupts */
 	temp = readl(sport->port.membase + UCR1);
 	temp &= ~(UCR1_RRDYEN);
@@ -1076,6 +1074,7 @@ static int start_rx_dma(struct imx_port *sport)
 	desc->callback_param = sport;
 
 	dev_dbg(dev, "RX: prepare for the DMA.\n");
+	sport->dma_is_rxing = 1;
 	sport->rx_cookie = dmaengine_submit(desc);
 	dma_async_issue_pending(chan);
 	return 0;