diff --git a/net/core/dev.c b/net/core/dev.c index ca7f4844cc40..db765cb5811e 100644 --- a/net/core/dev.c +++ b/net/core/dev.c @@ -11462,6 +11462,11 @@ static int netdev_check_ops(struct net_device *dev) return -EINVAL; } + if (!ops->ndo_hwtstamp_get != !ops->ndo_hwtstamp_set) { + netdev_WARN(dev, "driver implements only one hwtstamp NDO\n"); + return -EINVAL; + } + if (netdev_need_ops_lock(dev) && ops->ndo_set_rx_mode && !ops->ndo_set_rx_mode_async) { netdev_WARN(dev, "ops-locked drivers should use ndo_set_rx_mode_async\n");