net: sfp-bus: fix SFP mode detect from bitrate

The referenced commit moved the setting of the Autoneg and pause bits
early in sfp_parse_support(). However, we check whether the modes are
empty before using the bitrate to set some modes. Setting these bits
so early causes that test to always be false, preventing this working,
and thus some modules that used to work no longer do.

Move them just before the call to the quirk.

Fixes: 8110633db49d ("net: sfp-bus: allow SFP quirks to override Autoneg and pause bits")
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Reviewed-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
Link: https://lore.kernel.org/r/E1rPMJW-001Ahf-L0@rmk-PC.armlinux.org.uk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

diff --git a/drivers/net/phy/sfp-bus.c b/drivers/net/phy/sfp-bus.c
index 6fa679b..db39dec 100644 (file)
--- a/drivers/net/phy/sfp-bus.c
+++ b/drivers/net/phy/sfp-bus.c
@@ -151,10 +151,6 @@ void sfp_parse_support(struct sfp_bus *bus, const struct sfp_eeprom_id *id,
        unsigned int br_min, br_nom, br_max;
        __ETHTOOL_DECLARE_LINK_MODE_MASK(modes) = { 0, };
 
-       phylink_set(modes, Autoneg);
-       phylink_set(modes, Pause);
-       phylink_set(modes, Asym_Pause);
-
        /* Decode the bitrate information to MBd */
        br_min = br_nom = br_max = 0;
        if (id->base.br_nominal) {
@@ -339,6 +335,10 @@ void sfp_parse_support(struct sfp_bus *bus, const struct sfp_eeprom_id *id,
                }
        }
 
+       phylink_set(modes, Autoneg);
+       phylink_set(modes, Pause);
+       phylink_set(modes, Asym_Pause);
+
        if (bus->sfp_quirk && bus->sfp_quirk->modes)
                bus->sfp_quirk->modes(id, modes, interfaces);