diff --git a/drivers/phy/rockchip/phy-rockchip-naneng-usb2.c b/drivers/phy/rockchip/phy-rockchip-naneng-usb2.c
index f66054602c0d..80083609e442 100644
--- a/drivers/phy/rockchip/phy-rockchip-naneng-usb2.c
+++ b/drivers/phy/rockchip/phy-rockchip-naneng-usb2.c
@@ -354,7 +354,7 @@ rockchip_usb2phy_clk480m_register(struct rockchip_usb2phy *rphy)
 	/* optional override of the clockname */
 	of_property_read_string(node, "clock-output-names", &init.name);
 
-	if (refclk) {
+	if (!IS_ERR(refclk)) {
 		clk_name = __clk_get_name(refclk);
 		init.parent_names = &clk_name;
 		init.num_parents = 1;