drivers/net: eliminate irq handler impossible checks, needless casts

- Eliminate check for irq handler 'dev_id==NULL' where the
  condition never occurs.

- Eliminate needless casts to/from void*

Signed-off-by: Jeff Garzik <jeff@garzik.org>

1 files changed, 1 insertions, 7 deletions

diff --git a/drivers/net/pcmcia/axnet_cs.c b/drivers/net/pcmcia/axnet_cs.c
index e5f366910914..5ddd5742f779 100644
--- a/drivers/net/pcmcia/axnet_cs.c
+++ b/drivers/net/pcmcia/axnet_cs.c
@@ -1201,14 +1201,8 @@ static irqreturn_t ax_interrupt(int irq, void *dev_id)
         struct ei_device *ei_local;
         int handled = 0;
 
-        if (dev == NULL) 
-        {
-                printk ("net_interrupt(): irq %d for unknown device.\n", irq);
-                return IRQ_NONE;
-        }
-    
         e8390_base = dev->base_addr;
-        ei_local = (struct ei_device *) netdev_priv(dev);
+        ei_local = netdev_priv(dev);
 
         /*
          *      Protect the irq test too.