Re: orinoco potentially dereferencing before check

From: Jeff Garzik
Date: Mon Apr 19 2004 - 11:23:58 EST


David Gibson wrote:
On Fri, Apr 16, 2004 at 10:18:26PM +0100, Dave Jones wrote:

+++ linux-2.6.5/drivers/net/wireless/orinoco_pci.c 2004-04-16 22:17:30.000000000 +0100
@@ -275,14 +275,16 @@
static void __devexit orinoco_pci_remove_one(struct pci_dev *pdev)
{
struct net_device *dev = pci_get_drvdata(pdev);
- struct orinoco_private *priv = dev->priv;
+ struct orinoco_private *priv;

if (! dev)
BUG();

+ priv = dev->priv;
+
unregister_netdev(dev);

- if (dev->irq)
+ if (dev->irq)
free_irq(dev->irq, dev);

if (priv->hw.iobase)
-


Better to just remove the if (! dev) BUG(). I don't believe we've
ever hit that particular BUG() in debugging, so there's probably not
much point having it.


done.

Jeff



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