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smsc911x: fix BUG if module is removed while interface is up 

If the module is removed while its interface is up, smsc911x_stop is not
called until after smsc911x_drv_remove has disposed of phy_dev.  This
patch changes the stop method to handle this situation.

This is a different problem to the one reported by dfoley@telus.net.

Signed-off-by: Steve Glendinning <steve.glendinning@smsc.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Steve Glendinning 2008-12-25 16:40:19 -08:00 committed by David S. Miller
parent 6332178d91
commit dd04519388
1 changed files with 2 additions and 3 deletions
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5
drivers/net/smsc911x.c
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@ -1267,8 +1267,6 @@ static int smsc911x_stop(struct net_device *dev)
struct smsc911x_data *pdata = netdev_priv(dev);
unsigned int temp;
BUG_ON(!pdata->phy_dev);
/* Disable all device interrupts */
temp = smsc911x_reg_read(pdata, INT_CFG);
temp &= ~INT_CFG_IRQ_EN_;
@ -1283,7 +1281,8 @@ static int smsc911x_stop(struct net_device *dev)
smsc911x_tx_update_txcounters(dev);
/* Bring the PHY down */
phy_stop(pdata->phy_dev);
if (pdata->phy_dev)
phy_stop(pdata->phy_dev);
SMSC_TRACE(IFDOWN, "Interface stopped");
return 0;