diff --git a/drivers/usb/serial/ftdi_sio.c b/drivers/usb/serial/ftdi_sio.c
index 2d04585..e4c248c 100644
--- a/drivers/usb/serial/ftdi_sio.c
+++ b/drivers/usb/serial/ftdi_sio.c
@@ -1169,7 +1169,9 @@
 	/* XXX see create_sysfs_attrs */
 	if (priv->chip_type != SIO) {
 		device_remove_file(&port->dev, &dev_attr_event_char);
-		if (priv->chip_type == FT232BM || priv->chip_type == FT2232C) {
+		if (priv->chip_type == FT232BM ||
+		    priv->chip_type == FT2232C ||
+		    priv->chip_type == FT232RL) {
 			device_remove_file(&port->dev, &dev_attr_latency_timer);
 		}
 	}
@@ -2102,6 +2104,7 @@
 	case FT8U232AM:
 	case FT232BM:
 	case FT2232C:
+	case FT232RL:
 		/* the 8U232AM returns a two byte value (the sio is a 1 byte value) - in the same
 		   format as the data returned from the in point */
 		if ((ret = usb_control_msg(port->serial->dev,