net: stmmac: dwmac-rk: fix error handling in rk_gmac_powerup()

If phy_power_on() fails in rk_gmac_powerup(), clocks are left enabled.

Found by Linux Driver Verification project (linuxtesting.org).

Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c
index 7b92336..3b174ea 100644 (file)
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c
@@ -1342,8 +1342,10 @@ static int rk_gmac_powerup(struct rk_priv_data *bsp_priv)
        }
 
        ret = phy_power_on(bsp_priv, true);
-       if (ret)
+       if (ret) {
+               gmac_clk_enable(bsp_priv, false);
                return ret;
+       }
 
        pm_runtime_enable(dev);
        pm_runtime_get_sync(dev);