diff --git a/drivers/tty/serial/serial-tegra.c b/drivers/tty/serial/serial-tegra.c
index a53899c..17d8a08 100644
--- a/drivers/tty/serial/serial-tegra.c
+++ b/drivers/tty/serial/serial-tegra.c
@@ -583,9 +583,19 @@
 	struct tty_struct *tty = tty_port_tty_get(&tup->uport.state->port);
 	struct tty_port *port = &u->state->port;
 	unsigned long flags;
+	struct dma_tx_state state;
+	enum dma_status status;
+
+	spin_lock_irqsave(&u->lock, flags);
+
+	status = dmaengine_tx_status(tup->rx_dma_chan, tup->rx_cookie, &state);
+
+	if (status == DMA_IN_PROGRESS) {
+		dev_dbg(tup->uport.dev, "RX DMA is in progress\n");
+		goto done;
+	}
 
 	async_tx_ack(tup->rx_dma_desc);
-	spin_lock_irqsave(&u->lock, flags);
 
 	/* Deactivate flow control to stop sender */
 	if (tup->rts_active)
@@ -607,6 +617,7 @@
 	if (tup->rts_active)
 		set_rts(tup, true);
 
+done:
 	spin_unlock_irqrestore(&u->lock, flags);
 }