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authorYangbo Lu <yangbo.lu@nxp.com>2019-12-06 12:53:35 +0300
committerDavid S. Miller <davem@davemloft.net>2019-12-06 22:47:26 +0300
commita6a10d45d1eaf3fe20dd73ff4ef07e6dc40ec6d9 (patch)
tree0902ba2c9f35908f6089157847fa771d51be197e /drivers
parentae72555b410410568b493f8735324f8e9bd7c051 (diff)
downloadlinux-a6a10d45d1eaf3fe20dd73ff4ef07e6dc40ec6d9.tar.xz
enetc: disable EEE autoneg by default
The EEE support has not been enabled on ENETC, but it may connect to a PHY which supports EEE and advertises EEE by default, while its link partner also advertises EEE. If this happens, the PHY enters low power mode when the traffic rate is low and causes packet loss. This patch disables EEE advertisement by default for any PHY that ENETC connects to, to prevent the above unwanted outcome. Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com> Reviewed-by: Claudiu Manoil <claudiu.manoil@nxp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/net/ethernet/freescale/enetc/enetc.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/net/ethernet/freescale/enetc/enetc.c b/drivers/net/ethernet/freescale/enetc/enetc.c
index 9db1b96ed9b9..17739906c966 100644
--- a/drivers/net/ethernet/freescale/enetc/enetc.c
+++ b/drivers/net/ethernet/freescale/enetc/enetc.c
@@ -1332,6 +1332,7 @@ static int enetc_phy_connect(struct net_device *ndev)
{
struct enetc_ndev_priv *priv = netdev_priv(ndev);
struct phy_device *phydev;
+ struct ethtool_eee edata;
if (!priv->phy_node)
return 0; /* phy-less mode */
@@ -1345,6 +1346,10 @@ static int enetc_phy_connect(struct net_device *ndev)
phy_attached_info(phydev);
+ /* disable EEE autoneg, until ENETC driver supports it */
+ memset(&edata, 0, sizeof(struct ethtool_eee));
+ phy_ethtool_set_eee(phydev, &edata);
+
return 0;
}