diff --git a/net/core/ethtool.c b/net/core/ethtool.c
index 31b1edd..e376e8c 100644
--- a/net/core/ethtool.c
+++ b/net/core/ethtool.c
@@ -212,6 +212,9 @@ static noinline int ethtool_get_drvinfo(struct net_device *dev, void __user *use
 	info.cmd = ETHTOOL_GDRVINFO;
 	ops->get_drvinfo(dev, &info);
 
+	/* this method of obtaining string set info is deprecated;
+	 * consider using ETHTOOL_GSSET_INFO instead
+	 */
 	if (ops->get_sset_count) {
 		int rc;