- Added check to return from the traffic handling function, if the card status
  is DOWN.
- Implemented Jeff's comments on incorrect return value in s2io_poll function.
Signed-off-by: NSivakumar Subramani <sivakumar.subramani@neterion.com>
Signed-off-by: NSantosh Rastapur <santosh.rastapur@neterion.com>
Signed-off-by: NRamkrishna Vepa <ram.vepa@neterion.com>
Signed-off-by: NJeff Garzik <jeff@garzik.org>