From: Magnus Damm <damm+rene...@opensource.se>

According to the data sheet the Ethernet-AVB hardware in R-Car Gen3
and R-Car Gen2 SoCs do not support half duplex operation. So update
the driver to mark 100Mbit HDX as unsupported.

Not-Yet-Signed-off-by: Magnus Damm <damm+rene...@opensource.se>
---

 Written on top of renesas-drivers-2018-07-17-v4.18-rc5

 drivers/net/ethernet/renesas/ravb_main.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- 0001/drivers/net/ethernet/renesas/ravb_main.c
+++ work/drivers/net/ethernet/renesas/ravb_main.c       2018-07-19 
19:18:38.210607110 +0900
@@ -1066,8 +1066,8 @@ static int ravb_phy_init(struct net_devi
                netdev_info(ndev, "limited PHY to 100Mbit/s\n");
        }
 
-       /* 10BASE is not supported */
-       phydev->supported &= ~PHY_10BT_FEATURES;
+       /* Nether 10BASE nor half duplex is supported */
+       phydev->supported &= ~(PHY_10BT_FEATURES | SUPPORTED_100baseT_Half);
 
        phy_attached_info(phydev);
 

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