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| author | Micah Gruber <micah.gruber@gmail.com> | 2007-07-24 04:44:56 +0200 |
|---|---|---|
| committer | Jeff Garzik <jeff@garzik.org> | 2007-07-30 21:58:54 +0200 |
| commit | c196d80f994ef4ffefd5a7c62e3f42bd75d538bc (patch) | |
| tree | 324724a86e675d468c625e419aa99fb60d09c155 /drivers | |
| parent | PATCH kernel 2.6.22] PCMCIA-NETDEV : modify smc91c92_cs.c to become SMP safe (diff) | |
| download | linux-c196d80f994ef4ffefd5a7c62e3f42bd75d538bc.tar.xz linux-c196d80f994ef4ffefd5a7c62e3f42bd75d538bc.zip | |
Fix a potential NULL pointer dereference in mace_interrupt() in drivers/net/pcmcia/nmclan_cs.c
This patch fixes a potential null dereference bug where we dereference
DEV before a null check. This patch simply moves the dereferencing after
the null check.
Signed-off-by: Micah Gruber <micah.gruber@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/pcmcia/nmclan_cs.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/net/pcmcia/nmclan_cs.c b/drivers/net/pcmcia/nmclan_cs.c index 73da611fd536..997c2d0c83bb 100644 --- a/drivers/net/pcmcia/nmclan_cs.c +++ b/drivers/net/pcmcia/nmclan_cs.c @@ -996,7 +996,7 @@ static irqreturn_t mace_interrupt(int irq, void *dev_id) { struct net_device *dev = (struct net_device *) dev_id; mace_private *lp = netdev_priv(dev); - kio_addr_t ioaddr = dev->base_addr; + kio_addr_t ioaddr; int status; int IntrCnt = MACE_MAX_IR_ITERATIONS; @@ -1006,6 +1006,8 @@ static irqreturn_t mace_interrupt(int irq, void *dev_id) return IRQ_NONE; } + ioaddr = dev->base_addr; + if (lp->tx_irq_disabled) { printk( (lp->tx_irq_disabled? |