Remove always-false tests in irq handler.

Also a few other minor cleanups.
Signed-off-by: NJeff Garzik <jgarzik@redhat.com>

This is nicer than the MAC_FMT stuff.
Signed-off-by: NJoe Perches <joe@perches.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

We now have struct net_device_stats embedded in struct net_device,
and the default ->get_stats() hook does the obvious thing for us.

Run through drivers/net/* and remove the driver-local storage of
statistics, and driver-local ->get_stats() hook where applicable.

This was just the low-hanging fruit in drivers/net; plenty more drivers
remain to be updated.

[ Resolved conflicts with napi_struct changes and fix sunqe build
  regression... -DaveM ]
Signed-off-by: NJeff Garzik <jeff@garzik.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Changes to last version:
- use netdev_alloc_skb
- make init_rx_bufs just fail and not panic, if skb alloc fails
- don/t free_irq, if request_irq failed

Thomas.

Extracted chip specific code out of lasi_82596.c and placed into a lib82596.c
to make it usable for other 82596 drivers
Signed-off-by: NThomas Bogendoerfer <tsbogend@alpha.franken.de>
Signed-off-by: NJeff Garzik <jeff@garzik.org>