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Staging: altpciechdma: Null deref in altpciechdma.c remove()

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If dev is NULL it prints an error message.  The error message dereferences
dev.

Compile tested only.

Signed-off-by: Dan Carpenter <error27@gmail.com>
Cc: Leon Woestenberg <leon.woestenberg@axon.tv>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Dan Carpenter 2009-01-20 15:07:36 +03:00 • committed by Greg Kroah-Hartman
parent 451084d2e0
commit 2c77cb3e05
1 changed files with 2 additions and 1 deletions
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3
drivers/staging/altpciechdma/altpciechdma.c
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@ -946,7 +946,8 @@ static void __devexit remove(struct pci_dev *dev)
struct ape_dev *ape;
printk(KERN_DEBUG "remove(0x%p)\n", dev);
if ((dev == 0) || (dev->dev.driver_data == 0)) {
printk(KERN_DEBUG "remove(dev = 0x%p) dev->dev.driver_data = 0x%p\n", dev, dev->dev.driver_data);
printk(KERN_DEBUG "remove(dev = 0x%p) dev->dev.driver_data = 0x%p\n",
dev, (dev? dev->dev.driver_data: NULL));
return;
}
ape = (struct ape_dev *)dev->dev.driver_data;