gianfar: Check if phydev present on ethtool -A
This fixes a seg fault on 'ethtool -A' entry if the
interface is down. Obviously we need to have the
phy device initialized / "connected" (see of_phy_connect())
to be able to advertise pause frame capabilities.
Fixes: 23402bddf9
Signed-off-by: Claudiu Manoil <claudiu.manoil@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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@ -533,6 +533,9 @@ static int gfar_spauseparam(struct net_device *dev,
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struct gfar __iomem *regs = priv->gfargrp[0].regs;
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u32 oldadv, newadv;
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if (!phydev)
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return -ENODEV;
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if (!(phydev->supported & SUPPORTED_Pause) ||
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(!(phydev->supported & SUPPORTED_Asym_Pause) &&
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(epause->rx_pause != epause->tx_pause)))
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