diff --git a/drivers/usb/serial/keyspan.c b/drivers/usb/serial/keyspan.c
index 5a979729f8ec4695a1fa4e4395b86a430184e1c9..58c17fdc85eb77ea40718e7791475d341d34d0d8 100644
--- a/drivers/usb/serial/keyspan.c
+++ b/drivers/usb/serial/keyspan.c
@@ -2303,7 +2303,7 @@ static int keyspan_startup(struct usb_serial *serial)
 	if (d_details == NULL) {
 		dev_err(&serial->dev->dev, "%s - unknown product id %x\n",
 		    __func__, le16_to_cpu(serial->dev->descriptor.idProduct));
-		return 1;
+		return -ENODEV;
 	}
 
 	/* Setup private data for serial driver */