diff options
Diffstat (limited to 'target/linux/mvebu/patches-4.9/404-net-phy-restart-phy-autonegotiation-after-EEE-advert.patch')
| -rw-r--r-- | target/linux/mvebu/patches-4.9/404-net-phy-restart-phy-autonegotiation-after-EEE-advert.patch | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/target/linux/mvebu/patches-4.9/404-net-phy-restart-phy-autonegotiation-after-EEE-advert.patch b/target/linux/mvebu/patches-4.9/404-net-phy-restart-phy-autonegotiation-after-EEE-advert.patch new file mode 100644 index 0000000000..5290e71408 --- /dev/null +++ b/target/linux/mvebu/patches-4.9/404-net-phy-restart-phy-autonegotiation-after-EEE-advert.patch @@ -0,0 +1,50 @@ +From: Russell King <rmk+kernel@armlinux.org.uk> +Date: Thu, 5 Jan 2017 12:21:09 +0000 +Subject: [PATCH] net: phy: restart phy autonegotiation after EEE + advertisment change + +When the EEE advertisment is changed, we should restart autonegotiation +to update the link partner with the new EEE settings. Add this trigger +but only if the advertisment has changed. + +Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> +--- + +--- a/drivers/net/phy/phy.c ++++ b/drivers/net/phy/phy.c +@@ -1307,16 +1307,33 @@ EXPORT_SYMBOL(phy_ethtool_get_eee); + */ + int phy_ethtool_set_eee(struct phy_device *phydev, struct ethtool_eee *data) + { +- int cap, adv; ++ int cap, old_adv, adv, ret; + + /* Get Supported EEE */ + cap = phy_read_mmd(phydev, MDIO_MMD_PCS, MDIO_PCS_EEE_ABLE); + if (cap < 0) + return cap; + ++ old_adv = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_AN_EEE_ADV); ++ if (old_adv < 0) ++ return old_adv; ++ + adv = ethtool_adv_to_mmd_eee_adv_t(data->advertised) & cap; + +- return phy_write_mmd(phydev, MDIO_MMD_AN, MDIO_AN_EEE_ADV, adv); ++ if (old_adv != adv) { ++ ret = phy_write_mmd(phydev, MDIO_MMD_AN, MDIO_AN_EEE_ADV, adv); ++ if (ret < 0) ++ return ret; ++ ++ /* Restart autonegotiation so the new modes get sent to the ++ * link partner. ++ */ ++ ret = phy_restart_aneg(phydev); ++ if (ret < 0) ++ return ret; ++ } ++ ++ return 0; + } + EXPORT_SYMBOL(phy_ethtool_set_eee); + |