target/linux/mvebu/patches-4.9/408-net-phy-hook-up-clause-45-autonegotiation-restart.patch

   1 From: Russell King <rmk+kernel@armlinux.org.uk>
   2 Date: Fri, 13 Jan 2017 11:17:30 +0000
   3 Subject: [PATCH] net: phy: hook up clause 45 autonegotiation restart
   4
   5 genphy_restart_aneg() can only restart autonegotiation on clause 22
   6 PHYs.  Add a phy_restart_aneg() function which selects between the
   7 clause 22 and clause 45 restart functionality depending on the PHY
   8 type.
   9
  10 Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
  11 ---
  12
  13 --- a/drivers/net/phy/phy.c
  14 +++ b/drivers/net/phy/phy.c
  15 @@ -134,6 +134,24 @@ static int phy_config_interrupt(struct p
  16         return 0;
  17  }
  18
  19 +/**
  20 + * phy_restart_aneg - restart auto-negotiation
  21 + * @phydev: target phy_device struct
  22 + *
  23 + * Restart the autonegotiation on @phydev.  Returns >= 0 on success or
  24 + * negative errno on error.
  25 + */
  26 +static int phy_restart_aneg(struct phy_device *phydev)
  27 +{
  28 +       int ret;
  29 +
  30 +       if (phydev->is_c45)
  31 +               ret = genphy_c45_restart_aneg(phydev);
  32 +       else
  33 +               ret = genphy_restart_aneg(phydev);
  34 +
  35 +       return ret;
  36 +}
  37
  38  /**
  39   * phy_aneg_done - return auto-negotiation status
  40 @@ -1442,3 +1460,14 @@ int phy_ethtool_set_link_ksettings(struc
  41         return phy_ethtool_ksettings_set(phydev, cmd);
  42  }
  43  EXPORT_SYMBOL(phy_ethtool_set_link_ksettings);
  44 +
  45 +int phy_ethtool_nway_reset(struct net_device *ndev)
  46 +{
  47 +       struct phy_device *phydev = ndev->phydev;
  48 +
  49 +       if (!phydev)
  50 +               return -ENODEV;
  51 +
  52 +       return phy_restart_aneg(phydev);
  53 +}
  54 +EXPORT_SYMBOL(phy_ethtool_nway_reset);