This reverts the following commit in linux mainline for kernel < 2.6.39: 

commit 782d640afd15af7a1faf01cfe566ca4ac511319d
Author: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Date:   Thu Apr 7 07:32:18 2011 +0000

    net: atl*: convert to hw_features
    
    Things left as they were:
     - atl1: is RX checksum really enabled?
     - atl2: copy-paste from atl1, with-errors-on-modify I presume
     - atl1c: there's a bug: MTU can't be changed if device is not up
    
    Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
    Signed-off-by: David S. Miller <davem@davemloft.net>

--- a/drivers/net/wireless/ath/ath6kl/main.c
+++ b/drivers/net/wireless/ath/ath6kl/main.c
@@ -1270,6 +1270,7 @@ static struct net_device_stats *ath6kl_get_stats(struct net_device *dev)
	return &vif->net_stats;
 }

+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,39))
 static int ath6kl_set_features(struct net_device *dev, u32 features)
 {
	struct ath6kl_vif *vif = netdev_priv(dev);
@@ -1301,6 +1302,7 @@ static int ath6kl_set_features(struct net_device *dev, u32 features)

	return err;
 }
+#endif /* (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,39)) */

 static void ath6kl_set_multicast_list(struct net_device *ndev)
 {
@@ -1713,7 +1715,9 @@ static struct net_device_ops ath6kl_netdev_ops = {
	.ndo_stop               = ath6kl_close,
	.ndo_start_xmit         = ath6kl_data_tx,
	.ndo_get_stats          = ath6kl_get_stats,
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,39))
	.ndo_set_features       = ath6kl_set_features,
+#endif /* (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,39)) */
	.ndo_set_rx_mode	= ath6kl_set_multicast_list,
 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,4,0))
	.ndo_do_ioctl           = ath6kl_ioctl,
@@ -1731,7 +1735,9 @@ void init_netdev(struct net_device *dev)
				sizeof(struct wmi_data_hdr) + HTC_HDR_LENGTH
				+ WMI_MAX_TX_META_SZ + ATH6KL_HTC_ALIGN_BYTES;

+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,39))
	dev->hw_features |= NETIF_F_IP_CSUM | NETIF_F_RXCSUM;
+#endif

	return;
 }

--- a/drivers/net/ethernet/atheros/atl1c/atl1c_ethtool.c
+++ b/drivers/net/ethernet/atheros/atl1c/atl1c_ethtool.c
@@ -114,6 +114,13 @@ static int atl1c_set_settings(struct net
 	return 0;
 }
 
+#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,39))
+static u32 atl1c_get_tx_csum(struct net_device *netdev)
+{
+	return (netdev->features & NETIF_F_HW_CSUM) != 0;
+}
+#endif /* (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,39)) */
+
 static u32 atl1c_get_msglevel(struct net_device *netdev)
 {
 	struct atl1c_adapter *adapter = netdev_priv(netdev);
@@ -303,6 +310,11 @@ static const struct ethtool_ops atl1c_et
 	.get_link               = ethtool_op_get_link,
 	.get_eeprom_len         = atl1c_get_eeprom_len,
 	.get_eeprom             = atl1c_get_eeprom,
+#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,39))
+	.get_tx_csum            = atl1c_get_tx_csum,
+	.get_sg                 = ethtool_op_get_sg,
+	.set_sg                 = ethtool_op_set_sg,
+#endif /* (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,39)) */
 };
 
 void atl1c_set_ethtool_ops(struct net_device *netdev)
--- a/drivers/net/ethernet/atheros/atl1c/atl1c_main.c
+++ b/drivers/net/ethernet/atheros/atl1c/atl1c_main.c
@@ -486,6 +486,7 @@ static void atl1c_set_rxbufsize(struct a
 		roundup(mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN, 8) : AT_RX_BUF_SIZE;
 }
 
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,39))
 static u32 atl1c_fix_features(struct net_device *netdev, u32 features)
 {
 	/*
@@ -512,6 +513,7 @@ static int atl1c_set_features(struct net
 
 	return 0;
 }
+#endif /* (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,39)) */
 
 /*
  * atl1c_change_mtu - Change the Maximum Transfer Unit
@@ -539,8 +541,19 @@ static int atl1c_change_mtu(struct net_d
 		netdev->mtu = new_mtu;
 		adapter->hw.max_frame_size = new_mtu;
 		atl1c_set_rxbufsize(adapter, netdev);
+#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,39))
+		if (new_mtu > MAX_TSO_FRAME_SIZE) {
+			adapter->netdev->features &= ~NETIF_F_TSO;
+			adapter->netdev->features &= ~NETIF_F_TSO6;
+		} else {
+			adapter->netdev->features |= NETIF_F_TSO;
+			adapter->netdev->features |= NETIF_F_TSO6;
+		}
+#endif /* (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,39)) */
 		atl1c_down(adapter);
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,39))
 		netdev_update_features(netdev);
+#endif /* (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,39)) */
 		atl1c_up(adapter);
 		clear_bit(__AT_RESETTING, &adapter->flags);
 		if (adapter->hw.ctrl_flags & ATL1C_FPGA_VERSION) {
@@ -2605,8 +2618,10 @@ static const struct net_device_ops atl1c
 	.ndo_set_mac_address	= atl1c_set_mac_addr,
 	.ndo_set_rx_mode	= atl1c_set_multi,
 	.ndo_change_mtu		= atl1c_change_mtu,
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,39))
 	.ndo_fix_features	= atl1c_fix_features,
 	.ndo_set_features	= atl1c_set_features,
+#endif /* (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,39)) */
 	.ndo_do_ioctl		= atl1c_ioctl,
 	.ndo_tx_timeout		= atl1c_tx_timeout,
 	.ndo_get_stats		= atl1c_get_stats,
@@ -2626,6 +2641,7 @@ static int atl1c_init_netdev(struct net_
 	atl1c_set_ethtool_ops(netdev);
 
 	/* TODO: add when ready */
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,39))
 	netdev->hw_features =	NETIF_F_SG	   |
 				NETIF_F_HW_CSUM	   |
 				NETIF_F_HW_VLAN_RX |
@@ -2633,6 +2649,14 @@ static int atl1c_init_netdev(struct net_
 				NETIF_F_TSO6;
 	netdev->features =	netdev->hw_features |
 				NETIF_F_HW_VLAN_TX;
+#else
+	netdev->features =	NETIF_F_SG	   |
+				NETIF_F_HW_CSUM	   |
+				NETIF_F_HW_VLAN_TX |
+				NETIF_F_HW_VLAN_RX |
+				NETIF_F_TSO	   |
+				NETIF_F_TSO6;
+#endif /* (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,39)) */
 	return 0;
 }
 
--- a/drivers/net/ethernet/atheros/atl1e/atl1e_ethtool.c
+++ b/drivers/net/ethernet/atheros/atl1e/atl1e_ethtool.c
@@ -382,6 +382,11 @@ static const struct ethtool_ops atl1e_et
 	.get_eeprom_len         = atl1e_get_eeprom_len,
 	.get_eeprom             = atl1e_get_eeprom,
 	.set_eeprom             = atl1e_set_eeprom,
+#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,39))
+	.set_tx_csum            = ethtool_op_set_tx_hw_csum,
+	.set_sg                 = ethtool_op_set_sg,
+	.set_tso                = ethtool_op_set_tso,
+#endif /* (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,39)) */
 };
 
 void atl1e_set_ethtool_ops(struct net_device *netdev)
--- a/drivers/net/ethernet/atheros/atl1e/atl1e_main.c
+++ b/drivers/net/ethernet/atheros/atl1e/atl1e_main.c
@@ -397,6 +397,7 @@ static int atl1e_set_features(struct net
 
 	return 0;
 }
+#endif /* (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,39)) */
 
 /*
  * atl1e_change_mtu - Change the Maximum Transfer Unit
@@ -1948,7 +1949,11 @@ void atl1e_down(struct atl1e_adapter *ad
 	 * reschedule our watchdog timer */
 	set_bit(__AT_DOWN, &adapter->flags);
 
+#if defined(NETIF_F_LLTX) || (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,39))
 	netif_stop_queue(netdev);
+#else
+	netif_tx_disable(netdev);
+#endif
 
 	/* reset MAC to disable all RX/TX */
 	atl1e_reset_hw(&adapter->hw);
@@ -2218,8 +2223,10 @@ static const struct net_device_ops atl1e
 	.ndo_set_rx_mode	= atl1e_set_multi,
 	.ndo_validate_addr	= eth_validate_addr,
 	.ndo_set_mac_address	= atl1e_set_mac_addr,
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,39))
 	.ndo_fix_features	= atl1e_fix_features,
 	.ndo_set_features	= atl1e_set_features,
+#endif /* (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,39)) */
 	.ndo_change_mtu		= atl1e_change_mtu,
 	.ndo_do_ioctl		= atl1e_ioctl,
 	.ndo_tx_timeout		= atl1e_tx_timeout,
@@ -2240,10 +2247,15 @@ static int atl1e_init_netdev(struct net_
 	netdev->watchdog_timeo = AT_TX_WATCHDOG;
 	atl1e_set_ethtool_ops(netdev);
 
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,39))
 	netdev->hw_features = NETIF_F_SG | NETIF_F_HW_CSUM | NETIF_F_TSO |
 			      NETIF_F_HW_VLAN_RX;
 	netdev->features = netdev->hw_features | NETIF_F_LLTX |
 			   NETIF_F_HW_VLAN_TX;
+#else
+	netdev->features = NETIF_F_SG | NETIF_F_HW_CSUM | NETIF_F_TSO |
+			   NETIF_F_HW_VLAN_RX | NETIF_F_LLTX | NETIF_F_HW_VLAN_TX;
+#endif /* (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,39)) */
 
 	return 0;
 }
--- a/drivers/net/ethernet/atheros/atlx/atl1.c
+++ b/drivers/net/ethernet/atheros/atlx/atl1.c
@@ -2873,8 +2873,10 @@ static const struct net_device_ops atl1_
 	.ndo_validate_addr	= eth_validate_addr,
 	.ndo_set_mac_address	= atl1_set_mac,
 	.ndo_change_mtu		= atl1_change_mtu,
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,39))
 	.ndo_fix_features	= atlx_fix_features,
 	.ndo_set_features	= atlx_set_features,
+#endif /* (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,39)) */
 	.ndo_do_ioctl		= atlx_ioctl,
 	.ndo_tx_timeout		= atlx_tx_timeout,
 #ifdef CONFIG_NET_POLL_CONTROLLER
@@ -2984,11 +2986,13 @@ static int __devinit atl1_probe(struct p
 	netdev->features |= NETIF_F_SG;
 	netdev->features |= (NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX);
 
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,39))
 	netdev->hw_features = NETIF_F_HW_CSUM | NETIF_F_SG | NETIF_F_TSO |
 			      NETIF_F_HW_VLAN_RX;
 
 	/* is this valid? see atl1_setup_mac_ctrl() */
 	netdev->features |= NETIF_F_RXCSUM;
+#endif /* (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,39)) */
 
 	/*
 	 * patch for some L1 of old version,
@@ -3601,6 +3605,14 @@ static int atl1_set_pauseparam(struct ne
 	return 0;
 }
 
+#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,39))
+/* FIXME: is this right? -- CHS */
+static u32 atl1_get_rx_csum(struct net_device *netdev)
+{
+	return 1;
+}
+#endif /* (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,39)) */
+
 static void atl1_get_strings(struct net_device *netdev, u32 stringset,
 	u8 *data)
 {
@@ -3673,4 +3685,10 @@ static const struct ethtool_ops atl1_eth
 	.nway_reset		= atl1_nway_reset,
 	.get_ethtool_stats	= atl1_get_ethtool_stats,
 	.get_sset_count		= atl1_get_sset_count,
+#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,39))
+	.get_rx_csum		= atl1_get_rx_csum,
+	.set_tx_csum		= ethtool_op_set_tx_hw_csum,
+	.set_sg			= ethtool_op_set_sg,
+	.set_tso		= ethtool_op_set_tso,
+#endif /* (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,39)) */
 };
--- a/drivers/net/ethernet/atheros/atlx/atl2.c
+++ b/drivers/net/ethernet/atheros/atlx/atl2.c
@@ -418,6 +418,7 @@ static int atl2_set_features(struct net_
 
 	return 0;
 }
+#endif /* (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,39)) */
 
 static void atl2_intr_rx(struct atl2_adapter *adapter)
 {
@@ -1333,8 +1334,10 @@ static const struct net_device_ops atl2_
 	.ndo_validate_addr	= eth_validate_addr,
 	.ndo_set_mac_address	= atl2_set_mac,
 	.ndo_change_mtu		= atl2_change_mtu,
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,39))
 	.ndo_fix_features	= atl2_fix_features,
 	.ndo_set_features	= atl2_set_features,
+#endif /* (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,39)) */
 	.ndo_do_ioctl		= atl2_ioctl,
 	.ndo_tx_timeout		= atl2_tx_timeout,
 #ifdef CONFIG_NET_POLL_CONTROLLER
@@ -1432,8 +1435,12 @@ static int __devinit atl2_probe(struct p
 
 	err = -EIO;
 
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,39))
 	netdev->hw_features = NETIF_F_SG | NETIF_F_HW_VLAN_RX;
+#endif
+#if defined(NETIF_F_HW_VLAN_TX) || (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,39))
 	netdev->features |= (NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX);
+#endif
 
 	/* Init PHY as early as possible due to power saving issue  */
 	atl2_phy_init(&adapter->hw);
@@ -1860,6 +1867,13 @@ static int atl2_set_settings(struct net_
 	return 0;
 }
 
+#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,39))
+static u32 atl2_get_tx_csum(struct net_device *netdev)
+{
+	return (netdev->features & NETIF_F_HW_CSUM) != 0;
+}
+#endif /* (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,39)) */
+
 static u32 atl2_get_msglevel(struct net_device *netdev)
 {
 	return 0;
@@ -2127,6 +2141,14 @@ static const struct ethtool_ops atl2_eth
 	.get_eeprom_len		= atl2_get_eeprom_len,
 	.get_eeprom		= atl2_get_eeprom,
 	.set_eeprom		= atl2_set_eeprom,
+#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,39))
+	.get_tx_csum		= atl2_get_tx_csum,
+	.get_sg			= ethtool_op_get_sg,
+	.set_sg			= ethtool_op_set_sg,
+#ifdef NETIF_F_TSO
+	.get_tso		= ethtool_op_get_tso,
+#endif
+#endif /* (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,39)) */
 };
 
 static void atl2_set_ethtool_ops(struct net_device *netdev)
--- a/drivers/net/ethernet/atheros/atlx/atlx.c
+++ b/drivers/net/ethernet/atheros/atlx/atlx.c
@@ -269,5 +269,6 @@ static int atlx_set_features(struct net_
 
 	return 0;
 }
+#endif /* (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,39)) */
 
 #endif /* ATLX_C */