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, 0 insertions, 7 deletions

diff --git a/drivers/net/pcnet32.c b/drivers/net/pcnet32.c
index c73e2f21077..36f9d988278 100644
--- a/drivers/net/pcnet32.c
+++ b/drivers/net/pcnet32.c
@@ -2569,13 +2569,6 @@ pcnet32_interrupt(int irq, void *dev_id)
         u16 csr0;
         int boguscnt = max_interrupt_work;
 
-        if (!dev) {
-                if (pcnet32_debug & NETIF_MSG_INTR)
-                        printk(KERN_DEBUG "%s(): irq %d for unknown device\n",
-                               __FUNCTION__, irq);
-                return IRQ_NONE;
-        }
-
         ioaddr = dev->base_addr;
         lp = dev->priv;