diff --git a/net/ethtool/common.c b/net/ethtool/common.c
index 07032babd1b6..5f714bbbef19 100644
--- a/net/ethtool/common.c
+++ b/net/ethtool/common.c
@@ -654,6 +654,8 @@ int ethtool_check_ops(const struct ethtool_ops *ops)
 {
 	if (WARN_ON(ops->set_coalesce && !ops->supported_coalesce_params))
 		return -EINVAL;
+	if (WARN_ON(ops->rxfh_max_num_contexts == 1))
+		return -EINVAL;
 	/* NOTE: sufficiently insane drivers may swap ethtool_ops at runtime,
 	 * the fact that ops are checked at registration time does not
 	 * mean the ops attached to a netdev later on are sane.