net: greth: convert to hw_features

Note: Driver modifies its struct net_device_ops. This will break if used for
multiple devices that are not all the same (if that HW config is possible).

Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Signed-off-by: David S. Miller <davem@davemloft.net>

2 files changed, 4 insertions, 46 deletions

diff --git a/drivers/net/greth.c b/drivers/net/greth.c
index 396ff7d785d1..f181304a7ab6 100644
--- a/drivers/net/greth.c
+++ b/drivers/net/greth.c
@@ -901,7 +901,7 @@ static int greth_rx_gbit(struct net_device *dev, int limit)
 
                                 skb_put(skb, pkt_len);
 
-                                if (greth->flags & GRETH_FLAG_RX_CSUM && hw_checksummed(status))
+                                if (dev->features & NETIF_F_RXCSUM && hw_checksummed(status))
                                         skb->ip_summed = CHECKSUM_UNNECESSARY;
                                 else
                                         skb_checksum_none_assert(skb);
@@ -1142,41 +1142,6 @@ static void greth_get_regs(struct net_device *dev, struct ethtool_regs *regs, vo
                 buff[i] = greth_read_bd(&greth_regs[i]);
 }
 
-static u32 greth_get_rx_csum(struct net_device *dev)
-{
-        struct greth_private *greth = netdev_priv(dev);
-        return (greth->flags & GRETH_FLAG_RX_CSUM) != 0;
-}
-
-static int greth_set_rx_csum(struct net_device *dev, u32 data)
-{
-        struct greth_private *greth = netdev_priv(dev);
-
-        spin_lock_bh(&greth->devlock);
-
-        if (data)
-                greth->flags |= GRETH_FLAG_RX_CSUM;
-        else
-                greth->flags &= ~GRETH_FLAG_RX_CSUM;
-
-        spin_unlock_bh(&greth->devlock);
-
-        return 0;
-}
-
-static u32 greth_get_tx_csum(struct net_device *dev)
-{
-        return (dev->features & NETIF_F_IP_CSUM) != 0;
-}
-
-static int greth_set_tx_csum(struct net_device *dev, u32 data)
-{
-        netif_tx_lock_bh(dev);
-        ethtool_op_set_tx_csum(dev, data);
-        netif_tx_unlock_bh(dev);
-        return 0;
-}
-
 static const struct ethtool_ops greth_ethtool_ops = {
         .get_msglevel           = greth_get_msglevel,
         .set_msglevel           = greth_set_msglevel,
@@ -1185,10 +1150,6 @@ static const struct ethtool_ops greth_ethtool_ops = {
         .get_drvinfo            = greth_get_drvinfo,
         .get_regs_len           = greth_get_regs_len,
         .get_regs               = greth_get_regs,
-        .get_rx_csum            = greth_get_rx_csum,
-        .set_rx_csum            = greth_set_rx_csum,
-        .get_tx_csum            = greth_get_tx_csum,
-        .set_tx_csum            = greth_set_tx_csum,
         .get_link               = ethtool_op_get_link,
 };
 
@@ -1570,9 +1531,10 @@ static int __devinit greth_of_probe(struct platform_device *ofdev)
         GRETH_REGSAVE(regs->status, 0xFF);
 
         if (greth->gbit_mac) {
-                dev->features = NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_HIGHDMA;
+                dev->hw_features = NETIF_F_SG | NETIF_F_IP_CSUM |
+                        NETIF_F_RXCSUM;
+                dev->features = dev->hw_features | NETIF_F_HIGHDMA;
                 greth_netdev_ops.ndo_start_xmit = greth_start_xmit_gbit;
-                greth->flags = GRETH_FLAG_RX_CSUM;
         }
 
         if (greth->multicast) {
diff --git a/drivers/net/greth.h b/drivers/net/greth.h
index be0f2062bd14..9a0040dee4da 100644
--- a/drivers/net/greth.h
+++ b/drivers/net/greth.h
@@ -77,9 +77,6 @@
  */
 #define MAX_FRAME_SIZE          1520
 
-/* Flags */
-#define GRETH_FLAG_RX_CSUM 0x1
-
 /* GRETH APB registers */
 struct greth_regs {
         u32 control;
@@ -133,7 +130,6 @@ struct greth_private {
         unsigned int duplex;
 
         u32 msg_enable;
-        u32 flags;
 
         u8 phyaddr;
         u8 multicast;