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authorJesper Juhl <jesper.juhl@gmail.com>2007-09-29 09:42:09 +0400
committerDavid S. Miller <davem@sunset.davemloft.net>2007-10-11 03:53:51 +0400
commitbcfef8c3681fa59b653871682956a8fdf5c27c5a (patch)
tree7fa3c9df43063f00474c1ca00066728cd3136c6a /drivers/net/tokenring
parent0da18e3883d18ac716ad8cc07df9bd30933807ac (diff)
downloadlinux-bcfef8c3681fa59b653871682956a8fdf5c27c5a.tar.xz
Avoid possible NULL pointer deref in 3c359 driver
In xl_freemem(), if dev_if is NULL, the line struct xl_private *xl_priv =(struct xl_private *)dev->priv; will cause a NULL pointer dereference. (akpm: don't try to fix it: just delete the pointless test-for-null) Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Jeff Garzik <jeff@garzik.org>
Diffstat (limited to 'drivers/net/tokenring')
-rw-r--r--drivers/net/tokenring/3c359.c5
1 files changed, 0 insertions, 5 deletions
diff --git a/drivers/net/tokenring/3c359.c b/drivers/net/tokenring/3c359.c
index 88d03c085d54..7224d368b2a7 100644
--- a/drivers/net/tokenring/3c359.c
+++ b/drivers/net/tokenring/3c359.c
@@ -1045,11 +1045,6 @@ static irqreturn_t xl_interrupt(int irq, void *dev_id)
u8 __iomem * xl_mmio = xl_priv->xl_mmio ;
u16 intstatus, macstatus ;
- if (!dev) {
- printk(KERN_WARNING "Device structure dead, aaahhhh !\n") ;
- return IRQ_NONE;
- }
-
intstatus = readw(xl_mmio + MMIO_INTSTATUS) ;
if (!(intstatus & 1)) /* We didn't generate the interrupt */