#define REG_INT_RETRIG_TIMER           0x1608
 #define INT_RETRIG_TIMER_MASK          0xFFFF
 
-#define REG_HDS_CTRL                   0x160C
-#define HDS_CTRL_EN                    0x0001
-#define HDS_CTRL_BACKFILLSIZE_SHIFT    8
-#define HDS_CTRL_BACKFILLSIZE_MASK     0x0FFF
-#define HDS_CTRL_MAX_HDRSIZE_SHIFT     20
-#define HDS_CTRL_MAC_HDRSIZE_MASK      0x0FFF
-
 #define REG_MAC_RX_STATUS_BIN          0x1700
 #define REG_MAC_RX_STATUS_END          0x175c
 #define REG_MAC_TX_STATUS_BIN          0x1760
 
        /* set MTU */
        AT_WRITE_REG(hw, REG_MTU, hw->max_frame_size + ETH_HLEN +
                        VLAN_HLEN + ETH_FCS_LEN);
-       /* HDS, disable */
-       AT_WRITE_REG(hw, REG_HDS_CTRL, 0);
 
        atl1c_configure_tx(adapter);
        atl1c_configure_rx(adapter);