diff --git a/drivers/tty/serial/amba-pl011.c b/drivers/tty/serial/amba-pl011.c
index 500232ad38f32c1a1b4ee358078a3ae4ee247689..3f169275f9fa60665379686bfe14ac58852f5a83 100644
--- a/drivers/tty/serial/amba-pl011.c
+++ b/drivers/tty/serial/amba-pl011.c
@@ -420,7 +420,7 @@ static void pl011_dma_probe(struct uart_amba_port *uap)
 	/* Optionally make use of an RX channel as well */
 	chan = dma_request_slave_channel(dev, "rx");
 
-	if (!chan && plat->dma_rx_param) {
+	if (!chan && plat && plat->dma_rx_param) {
 		chan = dma_request_channel(mask, plat->dma_filter, plat->dma_rx_param);
 
 		if (!chan) {