On 01/10/2017 03:13 PM, Russell King wrote: > When an Marvell 88E1512 PHY is connected to a nic in SGMII mode, the > fiber page is used for the SGMII host-side connection. The PHY driver > notices that SUPPORTED_FIBRE is set, so it tries reading the fiber page > for the link status, and ends up reading the MAC-side status instead of > the outgoing (copper) link. This leads to incorrect results reported > via ethtool. > > If the PHY is connected via SGMII to the host, ignore the fiber page. > However, continue to allow the existing power management code to > suspend and resume the fiber page. > > Signed-off-by: Russell King <rmk+ker...@armlinux.org.uk>
Fixes: 6cfb3bcc0641 ("Marvell phy: check link status in case of fiber link.") -- Florian