From: Valentin Longchamp <valentin@xxxxxxxxxxxx> Date: Wed, 3 Jun 2020 23:15:27 +0200 > @@ -464,6 +464,7 @@ void __netdev_watchdog_up(struct net_device *dev) > dev_hold(dev); > } > } > +EXPORT_SYMBOL(__netdev_watchdog_up); Please use EXPORT_SYMBOL_GPL(), thank you.