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/eepro.c b/drivers/net/eepro.c
index aae454aaa1c6..fd6e97891e73 100644
--- a/drivers/net/eepro.c
+++ b/drivers/net/eepro.c
@@ -1198,17 +1198,11 @@ static int eepro_send_packet(struct sk_buff *skb, struct net_device *dev)
 static irqreturn_t
 eepro_interrupt(int irq, void *dev_id)
 {
-        struct net_device *dev =  (struct net_device *)dev_id;
-                              /* (struct net_device *)(irq2dev_map[irq]);*/
+        struct net_device *dev = dev_id;
         struct eepro_local *lp;
         int ioaddr, status, boguscount = 20;
         int handled = 0;
 
-        if (dev == NULL) {
-                printk (KERN_ERR "eepro_interrupt(): irq %d for unknown device.\\n", irq);
-                return IRQ_NONE;
-        }
-
         lp = netdev_priv(dev);
 
         spin_lock(&lp->lock);