net: fec: iMX6 FEC does not support half-duplex gigabit

The iMX6 gigabit FEC does not support half-duplex gigabit operation.
Phys attacked to the FEC may support this, and we currently do nothing
to disable this feature.  This may result in an invalid configuration.
Mask out phy support for gigabit half-duplex operation.

Acked-by: Fugang Duan <B38611@freescale.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/freescale/fec_main.c b/drivers/net/ethernet/freescale/fec_main.c
index 77037fd377b85dcda23bddc3c043b8d11e9d8cb3..a91fe68030e6dc3410fed51451159db35306e9d0 100644 (file)
--- a/drivers/net/ethernet/freescale/fec_main.c
+++ b/drivers/net/ethernet/freescale/fec_main.c
@@ -1667,6 +1667,7 @@ static int fec_enet_mii_probe(struct net_device *ndev)
        /* mask with MAC supported features */
        if (id_entry->driver_data & FEC_QUIRK_HAS_GBIT) {
                phy_dev->supported &= PHY_GBIT_FEATURES;
+               phy_dev->supported &= ~SUPPORTED_1000baseT_Half;
 #if !defined(CONFIG_M5272)
                phy_dev->supported |= SUPPORTED_Pause;
 #endif