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net: fec: ensure that a disconnected phy isn't configured

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When we disconnect from a phy, we should forget our pointer to it so we
don't accidentally try to configure it.  We handle a NULL phy pointer
correctly in most places, except fec_enet_set_pauseparam().  Fix this
too.

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>
This commit is contained in:
Russell King 2014-07-08 00:22:59 +01:00 committed by David S. Miller
parent 635cf17ce2
commit 0b146ca8d4
1 changed files with 4 additions and 0 deletions
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4
drivers/net/ethernet/freescale/fec_main.c
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@ -1875,6 +1875,9 @@ static int fec_enet_set_pauseparam(struct net_device *ndev,
{
struct fec_enet_private *fep = netdev_priv(ndev);
if (!fep->phy_dev)
return -ENODEV;
if (pause->tx_pause != pause->rx_pause) {
netdev_info(ndev,
"hardware only support enable/disable both tx and rx");
@ -2186,6 +2189,7 @@ fec_enet_close(struct net_device *ndev)
phy_stop(fep->phy_dev);
phy_disconnect(fep->phy_dev);
fep->phy_dev = NULL;
fec_enet_clk_enable(ndev, false);
pinctrl_pm_select_sleep_state(&fep->pdev->dev);