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From: Russell King <rmk+kernel@armlinux.org.uk>
Date: Fri, 13 Jan 2017 11:17:30 +0000
Subject: [PATCH] net: phy: hook up clause 45 autonegotiation restart
genphy_restart_aneg() can only restart autonegotiation on clause 22
PHYs. Add a phy_restart_aneg() function which selects between the
clause 22 and clause 45 restart functionality depending on the PHY
type.
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
---
--- a/drivers/net/phy/phy.c
+++ b/drivers/net/phy/phy.c
@@ -134,6 +134,24 @@ static int phy_config_interrupt(struct p
return 0;
}
+/**
+ * phy_restart_aneg - restart auto-negotiation
+ * @phydev: target phy_device struct
+ *
+ * Restart the autonegotiation on @phydev. Returns >= 0 on success or
+ * negative errno on error.
+ */
+static int phy_restart_aneg(struct phy_device *phydev)
+{
+ int ret;
+
+ if (phydev->is_c45)
+ ret = genphy_c45_restart_aneg(phydev);
+ else
+ ret = genphy_restart_aneg(phydev);
+
+ return ret;
+}
/**
* phy_aneg_done - return auto-negotiation status
@@ -1454,3 +1472,14 @@ int phy_ethtool_set_link_ksettings(struc
return phy_ethtool_ksettings_set(phydev, cmd);
}
EXPORT_SYMBOL(phy_ethtool_set_link_ksettings);
+
+int phy_ethtool_nway_reset(struct net_device *ndev)
+{
+ struct phy_device *phydev = ndev->phydev;
+
+ if (!phydev)
+ return -ENODEV;
+
+ return phy_restart_aneg(phydev);
+}
+EXPORT_SYMBOL(phy_ethtool_nway_reset);
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