diff --git a/drivers/tty/serial/imx.c b/drivers/tty/serial/imx.c
index 689a117943a0..78bacd020221 100644
--- a/drivers/tty/serial/imx.c
+++ b/drivers/tty/serial/imx.c
@@ -2069,6 +2069,12 @@ static int serial_imx_probe(struct platform_device *pdev)
 	else if (ret < 0)
 		return ret;
 
+	if (sport->port.line >= ARRAY_SIZE(imx_ports)) {
+		dev_err(&pdev->dev, "serial%d out of range\n",
+			sport->port.line);
+		return -EINVAL;
+	}
+
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	base = devm_ioremap_resource(&pdev->dev, res);
 	if (IS_ERR(base))