--- zzzz-none-000/linux-3.10.107/drivers/of/of_net.c	2017-06-27 09:49:32.000000000 +0000
+++ vr9-7490-729/linux-3.10.107/drivers/of/of_net.c	2021-11-10 11:53:55.000000000 +0000
@@ -29,6 +29,7 @@
 	[PHY_INTERFACE_MODE_RGMII_TXID] = "rgmii-txid",
 	[PHY_INTERFACE_MODE_RTBI]	= "rtbi",
 	[PHY_INTERFACE_MODE_SMII]	= "smii",
+	[PHY_INTERFACE_MODE_QSGMII]	= "qsgmii",
 };
 
 /**
@@ -38,7 +39,7 @@
  * The function gets phy interface string from property 'phy-mode',
  * and return its index in phy_modes table, or errno in error case.
  */
-const int of_get_phy_mode(struct device_node *np)
+int of_get_phy_mode(struct device_node *np)
 {
 	const char *pm;
 	int err, i;