From: Chen-Yu Tsai <w...@csie.org>

The devicetree binding lists the phy phy as optional. As such, the
driver should not bail out if it can't find a regulator. Instead it
should just skip the remaining regulator related code and continue
on normally.

Skip the remainder of phy_power_on() if a regulator supply isn't
available. This also gets rid of the bogus return code.

Fixes: 2e12f536635f ("net: stmmac: dwmac-rk: Use standard devicetree property 
for phy regulator")
Signed-off-by: Chen-Yu Tsai <w...@csie.org>
---

On a separate note, maybe we should add this file to the Rockchip
entry in MAINTAINERS?

---
 drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c 
b/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c
index 4644b2aeeba1..e2e469c37a4d 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c
@@ -1194,10 +1194,8 @@ static int phy_power_on(struct rk_priv_data *bsp_priv, 
bool enable)
        int ret;
        struct device *dev = &bsp_priv->pdev->dev;
 
-       if (!ldo) {
-               dev_err(dev, "no regulator found\n");
-               return -1;
-       }
+       if (!ldo)
+               return 0;
 
        if (enable) {
                ret = regulator_enable(ldo);
-- 
2.20.1

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