[PATCH] net: phy: phylink: fix SFP interface autodetection

[Baruch Siach]

When the switching to the SFP detected link mode update the main
link_interface field as well. Otherwise, the link fails to come up when
the configured 'phy-mode' defers from the SFP detected mode.

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

Signed-off-by: Baruch Siach <bar...@tkos.co.il>
---
 drivers/net/phy/phylink.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/phy/phylink.c b/drivers/net/phy/phylink.c
index 3ba5cf2a8a5f..3ece48c86841 100644
--- a/drivers/net/phy/phylink.c
+++ b/drivers/net/phy/phylink.c
@@ -1631,6 +1631,7 @@ static int phylink_sfp_module_insert(void *upstream,
        if (pl->link_an_mode != MLO_AN_INBAND ||
            pl->link_config.interface != config.interface) {
                pl->link_config.interface = config.interface;
+               pl->link_interface = config.interface;
                pl->link_an_mode = MLO_AN_INBAND;
 
                changed = true;
-- 
2.18.0