Some cards don't support changing vlan offloading settings.  Make
Ethtool set_flags return -EINVAL in those cases.
Reported-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: Jesse Gross <jesse@nicira.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
 
        if (!(bp->flags & BNX2_FLAG_CAN_KEEP_VLAN) &&
            !(data & ETH_FLAG_RXVLAN))
-               return -EOPNOTSUPP;
+               return -EINVAL;
 
        rc = ethtool_op_set_flags(dev, data, ETH_FLAG_RXHASH | ETH_FLAG_RXVLAN |
                                  ETH_FLAG_TXVLAN);
 
        }
 
        if (!(data & ETH_FLAG_RXVLAN))
-               return -EOPNOTSUPP;
+               return -EINVAL;
 
        if ((data & ETH_FLAG_LRO) && bp->rx_csum && bp->disable_tpa)
                return -EINVAL;