Messages in this thread Patch in this message | | | From | Greg Kroah-Hartman <> | Subject | [PATCH 4.4 23/23] net: stmmac: dwmac-rk: Dont fail if phy regulator is absent | Date | Sun, 8 Sep 2019 13:41:58 +0100 |
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From: Chen-Yu Tsai <wens@csie.org>
[ Upstream commit 3b25528e1e355c803e73aa326ce657b5606cda73 ]
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 <wens@csie.org> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> --- drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-)
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c @@ -429,10 +429,8 @@ static int phy_power_on(struct rk_priv_d 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);
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