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>
diff --git a/drivers/net/atp.c b/drivers/net/atp.c
index 062f80e..2d306fc 100644
--- a/drivers/net/atp.c
+++ b/drivers/net/atp.c
@@ -598,17 +598,13 @@
Handle the network interface interrupts. */
static irqreturn_t atp_interrupt(int irq, void *dev_instance)
{
- struct net_device *dev = (struct net_device *)dev_instance;
+ struct net_device *dev = dev_instance;
struct net_local *lp;
long ioaddr;
static int num_tx_since_rx;
int boguscount = max_interrupt_work;
int handled = 0;
- if (dev == NULL) {
- printk(KERN_ERR "ATP_interrupt(): irq %d for unknown device.\n", irq);
- return IRQ_NONE;
- }
ioaddr = dev->base_addr;
lp = netdev_priv(dev);