[PATCH v2] net: phy: Prevent reporting advertised modes when autoneg is off

[Łukasz Stelmach]

Do not report advertised link modes (local and remote) when
autonegotiation is turned off. mii_ethtool_get_link_ksettings() exhibits
the same behaviour and this patch aims at unifying the behavior of both
functions.

Signed-off-by: Łukasz Stelmach <l.stelm...@samsung.com>
---
Changes in v2:
  - clear lp_advertising
  - set ETHTOOL_LINK_MODE_TP_BIT and ETHTOOL_LINK_MODE_MII_BIT in advertising

 drivers/net/phy/phy.c | 13 +++++++++++--
 1 file changed, 11 insertions(+), 2 deletions(-)

diff --git a/drivers/net/phy/phy.c b/drivers/net/phy/phy.c
index 35525a671400..6ede9c1c138c 100644
--- a/drivers/net/phy/phy.c
+++ b/drivers/net/phy/phy.c
@@ -315,8 +315,17 @@ void phy_ethtool_ksettings_get(struct phy_device *phydev,
                               struct ethtool_link_ksettings *cmd)
 {
        linkmode_copy(cmd->link_modes.supported, phydev->supported);
-       linkmode_copy(cmd->link_modes.advertising, phydev->advertising);
-       linkmode_copy(cmd->link_modes.lp_advertising, phydev->lp_advertising);
+       if (phydev->autoneg) {
+               linkmode_copy(cmd->link_modes.advertising, phydev->advertising);
+               linkmode_copy(cmd->link_modes.lp_advertising, 
phydev->lp_advertising);
+       } else {
+               linkmode_zero(cmd->link_modes.lp_advertising);
+               linkmode_zero(cmd->link_modes.advertising);
+               linkmode_set_bit(ETHTOOL_LINK_MODE_TP_BIT,
+                                cmd->link_modes.advertising);
+               linkmode_set_bit(ETHTOOL_LINK_MODE_MII_BIT,
+                                cmd->link_modes.advertising);
+       }
 
        cmd->base.speed = phydev->speed;
        cmd->base.duplex = phydev->duplex;
-- 
2.26.2