Following commit:
commit 52c956003a9d5bcae1f445f9dfd42b624adb6e87
Author: Russell King <[email protected]>
Date: Wed Dec 11 10:56:45 2019 +0000
net: phylink: delay MAC configuration for copper SFP modules
In function phylink_sfp_connect_phy, phylink_sfp_config is called before
phylink_attach_phy.
In the case of a genphy, the "supported" field of the phy_device is
filled by:
phylink_attach_phy->phy_attach_direct->phy_probe->genphy_read_abilities.
It means that:
ret = phylink_sfp_config(pl, mode, phy->supported, phy->advertising);
will have phy->supported with no bits set, and then the first call to
phylink_validate in phylink_sfp_config will return an error:
return phylink_is_empty_linkmode(supported) ? -EINVAL : 0;
this results in putting the sfp driver in "failed" state.
Thanks,
Julien Beraud
