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net: phy: phylink: fix SFP interface autodetection

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When connecting SFP PHY to phylink use the detected interface.
Otherwise, the link fails to come up when the configured 'phy-mode'
differs from the SFP detected mode.

Move most of phylink_connect_phy() into __phylink_connect_phy(), and
leave phylink_connect_phy() as a wrapper. phylink_sfp_connect_phy() can
now pass the SFP detected PHY interface to __phylink_connect_phy().

This fixes 1GB SFP module link up on eth3 of the Macchiatobin board that
is configured in the DT to "2500base-x" phy-mode.

Fixes: 9525ae8395 ("phylink: add phylink infrastructure")
Suggested-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Baruch Siach 2018-10-03 19:04:49 +03:00 committed by David S. Miller
parent 2d52527e80
commit 7e41837527
1 changed files with 28 additions and 20 deletions
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48
drivers/net/phy/phylink.c
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@ -717,6 +717,30 @@ static int phylink_bringup_phy(struct phylink *pl, struct phy_device *phy)
return 0;
}
static int __phylink_connect_phy(struct phylink *pl, struct phy_device *phy,
phy_interface_t interface)
{
int ret;
if (WARN_ON(pl->link_an_mode == MLO_AN_FIXED ||
(pl->link_an_mode == MLO_AN_INBAND &&
phy_interface_mode_is_8023z(interface))))
return -EINVAL;
if (pl->phydev)
return -EBUSY;
ret = phy_attach_direct(pl->netdev, phy, 0, interface);
if (ret)
return ret;
ret = phylink_bringup_phy(pl, phy);
if (ret)
phy_detach(phy);
return ret;
}
/**
* phylink_connect_phy() - connect a PHY to the phylink instance
* @pl: a pointer to a &struct phylink returned from phylink_create()
@ -734,31 +758,13 @@ static int phylink_bringup_phy(struct phylink *pl, struct phy_device *phy)
*/
int phylink_connect_phy(struct phylink *pl, struct phy_device *phy)
{
int ret;
if (WARN_ON(pl->link_an_mode == MLO_AN_FIXED ||
(pl->link_an_mode == MLO_AN_INBAND &&
phy_interface_mode_is_8023z(pl->link_interface))))
return -EINVAL;
if (pl->phydev)
return -EBUSY;
/* Use PHY device/driver interface */
if (pl->link_interface == PHY_INTERFACE_MODE_NA) {
pl->link_interface = phy->interface;
pl->link_config.interface = pl->link_interface;
}
ret = phy_attach_direct(pl->netdev, phy, 0, pl->link_interface);
if (ret)
return ret;
ret = phylink_bringup_phy(pl, phy);
if (ret)
phy_detach(phy);
return ret;
return __phylink_connect_phy(pl, phy, pl->link_interface);
}
EXPORT_SYMBOL_GPL(phylink_connect_phy);
@ -1672,7 +1678,9 @@ static void phylink_sfp_link_up(void *upstream)
static int phylink_sfp_connect_phy(void *upstream, struct phy_device *phy)
{
return phylink_connect_phy(upstream, phy);
struct phylink *pl = upstream;
return __phylink_connect_phy(upstream, phy, pl->link_config.interface);
}
static void phylink_sfp_disconnect_phy(void *upstream)