net: stmmac: dwmac-rk: Don't fail if phy regulator is absent
authorChen-Yu Tsai <wens@csie.org>
Thu, 29 Aug 2019 03:17:24 +0000 (11:17 +0800)
committerDavid S. Miller <davem@davemloft.net>
Fri, 30 Aug 2019 21:16:26 +0000 (14:16 -0700)
commit3b25528e1e355c803e73aa326ce657b5606cda73
tree86a9730082fb4c30a82db46b924fad4ced3c36ee
parentb6b4dc4c1fa7f1c99398e7dc85758049645e9588
net: stmmac: dwmac-rk: Don't fail if phy regulator is absent

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>
drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c