//byFreqType: 0=>5GHZ 1=>2.4GHZ
 static
-unsigned int
+__le16
 s_uGetRTSCTSDuration(
        struct vnt_private *pDevice,
        unsigned char byDurType,
                break;
        }
 
-       return uDurTime;
+       return cpu_to_le16((u16)uDurTime);
 }
 
 static
                                          byPktType, &buf->a);
                        /* Get Duration */
                        buf->duration_bb =
-                               cpu_to_le16((u16)s_uGetRTSCTSDuration(pDevice, RTSDUR_BB, cbFrameLength,
-                                                                     PK_TYPE_11B, pDevice->byTopCCKBasicRate,
-                                                                     bNeedAck, byFBOption));
+                               s_uGetRTSCTSDuration(pDevice, RTSDUR_BB,
+                                                    cbFrameLength, PK_TYPE_11B,
+                                                    pDevice->byTopCCKBasicRate,
+                                                    bNeedAck, byFBOption);
                        buf->duration_aa =
-                               cpu_to_le16((u16)s_uGetRTSCTSDuration(pDevice, RTSDUR_AA, cbFrameLength,
-                                                                     byPktType, wCurrentRate, bNeedAck,
-                                                                     byFBOption));
+                               s_uGetRTSCTSDuration(pDevice, RTSDUR_AA,
+                                                    cbFrameLength, byPktType,
+                                                    wCurrentRate, bNeedAck,
+                                                    byFBOption);
                        buf->duration_ba =
-                               cpu_to_le16((u16)s_uGetRTSCTSDuration(pDevice, RTSDUR_BA, cbFrameLength,
-                                                                     byPktType, wCurrentRate, bNeedAck,
-                                                                     byFBOption));
+                               s_uGetRTSCTSDuration(pDevice, RTSDUR_BA,
+                                                    cbFrameLength, byPktType,
+                                                    wCurrentRate, bNeedAck,
+                                                    byFBOption);
 
                        buf->data.duration = buf->duration_aa;
                        /* Get RTS Frame body */
                                          byPktType, &buf->a);
                        /* Get Duration */
                        buf->duration_bb =
-                               cpu_to_le16((u16)s_uGetRTSCTSDuration(pDevice, RTSDUR_BB, cbFrameLength,
-                                                                     PK_TYPE_11B, pDevice->byTopCCKBasicRate,
-                                                                     bNeedAck, byFBOption));
+                               s_uGetRTSCTSDuration(pDevice, RTSDUR_BB,
+                                                    cbFrameLength, PK_TYPE_11B,
+                                                    pDevice->byTopCCKBasicRate,
+                                                    bNeedAck, byFBOption);
                        buf->duration_aa =
-                               cpu_to_le16((u16)s_uGetRTSCTSDuration(pDevice, RTSDUR_AA, cbFrameLength,
-                                                                     byPktType, wCurrentRate, bNeedAck,
-                                                                     byFBOption));
+                               s_uGetRTSCTSDuration(pDevice, RTSDUR_AA,
+                                                    cbFrameLength, byPktType,
+                                                    wCurrentRate, bNeedAck,
+                                                    byFBOption);
                        buf->duration_ba =
-                               cpu_to_le16((u16)s_uGetRTSCTSDuration(pDevice, RTSDUR_BA, cbFrameLength,
-                                                                     byPktType, wCurrentRate, bNeedAck,
-                                                                     byFBOption));
+                               s_uGetRTSCTSDuration(pDevice, RTSDUR_BA,
+                                                    cbFrameLength, byPktType,
+                                                    wCurrentRate, bNeedAck,
+                                                    byFBOption);
                        buf->rts_duration_ba_f0 =
-                               cpu_to_le16((u16)s_uGetRTSCTSDuration(pDevice, RTSDUR_BA_F0, cbFrameLength,
-                                                                     byPktType, wCurrentRate, bNeedAck,
-                                                                     byFBOption));
+                               s_uGetRTSCTSDuration(pDevice, RTSDUR_BA_F0,
+                                                    cbFrameLength, byPktType,
+                                                    wCurrentRate, bNeedAck,
+                                                    byFBOption);
                        buf->rts_duration_aa_f0 =
-                               cpu_to_le16((u16)s_uGetRTSCTSDuration(pDevice, RTSDUR_AA_F0, cbFrameLength,
-                                                                     byPktType, wCurrentRate, bNeedAck,
-                                                                     byFBOption));
+                               s_uGetRTSCTSDuration(pDevice, RTSDUR_AA_F0,
+                                                    cbFrameLength, byPktType,
+                                                    wCurrentRate, bNeedAck,
+                                                    byFBOption);
                        buf->rts_duration_ba_f1 =
-                               cpu_to_le16((u16)s_uGetRTSCTSDuration(pDevice, RTSDUR_BA_F1, cbFrameLength,
-                                                                     byPktType, wCurrentRate, bNeedAck,
-                                                                     byFBOption));
+                               s_uGetRTSCTSDuration(pDevice, RTSDUR_BA_F1,
+                                                    cbFrameLength, byPktType,
+                                                    wCurrentRate, bNeedAck,
+                                                    byFBOption);
                        buf->rts_duration_aa_f1 =
-                               cpu_to_le16((u16)s_uGetRTSCTSDuration(pDevice, RTSDUR_AA_F1, cbFrameLength,
-                                                                     byPktType, wCurrentRate, bNeedAck,
-                                                                     byFBOption));
+                               s_uGetRTSCTSDuration(pDevice, RTSDUR_AA_F1,
+                                                    cbFrameLength, byPktType,
+                                                    wCurrentRate, bNeedAck,
+                                                    byFBOption);
                        buf->data.duration = buf->duration_aa;
                        /* Get RTS Frame body */
                        buf->data.frame_control =
                                          byPktType, &buf->ab);
                        /* Get Duration */
                        buf->duration =
-                               cpu_to_le16((u16)s_uGetRTSCTSDuration(pDevice, RTSDUR_AA, cbFrameLength,
-                                                                     byPktType, wCurrentRate, bNeedAck,
-                                                                     byFBOption));
+                               s_uGetRTSCTSDuration(pDevice, RTSDUR_AA,
+                                                    cbFrameLength, byPktType,
+                                                    wCurrentRate, bNeedAck,
+                                                    byFBOption);
                        buf->data.duration = buf->duration;
                        /* Get RTS Frame body */
                        buf->data.frame_control =
                                          byPktType, &buf->a);
                        /* Get Duration */
                        buf->duration =
-                               cpu_to_le16((u16)s_uGetRTSCTSDuration(pDevice, RTSDUR_AA, cbFrameLength,
-                                                                     byPktType, wCurrentRate,
-                                                                     bNeedAck, byFBOption));
+                               s_uGetRTSCTSDuration(pDevice, RTSDUR_AA,
+                                                    cbFrameLength, byPktType,
+                                                    wCurrentRate, bNeedAck,
+                                                    byFBOption);
                        buf->rts_duration_f0 =
-                               cpu_to_le16((u16)s_uGetRTSCTSDuration(pDevice, RTSDUR_AA_F0, cbFrameLength,
-                                                                     byPktType, wCurrentRate,
-                                                                     bNeedAck, byFBOption));
+                               s_uGetRTSCTSDuration(pDevice, RTSDUR_AA_F0,
+                                                    cbFrameLength, byPktType,
+                                                    wCurrentRate, bNeedAck,
+                                                    byFBOption);
                        buf->rts_duration_f1 =
-                               cpu_to_le16((u16)s_uGetRTSCTSDuration(pDevice, RTSDUR_AA_F1, cbFrameLength,
-                                                                     byPktType, wCurrentRate,
-                                                                     bNeedAck, byFBOption));
+                               s_uGetRTSCTSDuration(pDevice, RTSDUR_AA_F1,
+                                                    cbFrameLength, byPktType,
+                                                    wCurrentRate, bNeedAck,
+                                                    byFBOption);
                        buf->data.duration = buf->duration;
                        /* Get RTS Frame body */
                        buf->data.frame_control =
                                  PK_TYPE_11B, &buf->ab);
                /* Get Duration */
                buf->duration =
-                       cpu_to_le16((u16)s_uGetRTSCTSDuration(pDevice, RTSDUR_BB, cbFrameLength,
-                                                             byPktType, wCurrentRate, bNeedAck,
-                                                             byFBOption));
+                       s_uGetRTSCTSDuration(pDevice, RTSDUR_BB, cbFrameLength,
+                                            byPktType, wCurrentRate, bNeedAck,
+                                            byFBOption);
+
                buf->data.duration = buf->duration;
                /* Get RTS Frame body */
                buf->data.frame_control =
                                          pDevice->byTopCCKBasicRate,
                                          PK_TYPE_11B, &buf->b);
 
-                       buf->duration_ba = (u16)s_uGetRTSCTSDuration(pDevice, CTSDUR_BA, cbFrameLength,
-                                                                    byPktType, wCurrentRate, bNeedAck, byFBOption);
-                       buf->duration_ba = cpu_to_le16(buf->duration_ba);
-                       /* Get CTSDuration_ba_f0 */
-                       buf->cts_duration_ba_f0 = (u16)s_uGetRTSCTSDuration(pDevice, CTSDUR_BA_F0, cbFrameLength,
-                                                                           byPktType, wCurrentRate,
-                                                                           bNeedAck, byFBOption);
+                       buf->duration_ba =
+                               s_uGetRTSCTSDuration(pDevice, CTSDUR_BA,
+                                                    cbFrameLength, byPktType,
+                                                    wCurrentRate, bNeedAck,
+                                                    byFBOption);
 
-                       buf->cts_duration_ba_f0 = cpu_to_le16(buf->cts_duration_ba_f0);
-                       //Get CTSDuration_ba_f1
-                       buf->cts_duration_ba_f1 = (u16)s_uGetRTSCTSDuration(pDevice, CTSDUR_BA_F1, cbFrameLength,
-                                                                           byPktType, wCurrentRate,
-                                                                           bNeedAck, byFBOption);
+                       /* Get CTSDuration_ba_f0 */
+                       buf->cts_duration_ba_f0 =
+                               s_uGetRTSCTSDuration(pDevice, CTSDUR_BA_F0,
+                                                    cbFrameLength, byPktType,
+                                                    wCurrentRate, bNeedAck,
+                                                    byFBOption);
+
+                       /* Get CTSDuration_ba_f1 */
+                       buf->cts_duration_ba_f1 =
+                               s_uGetRTSCTSDuration(pDevice, CTSDUR_BA_F1,
+                                                    cbFrameLength, byPktType,
+                                                    wCurrentRate, bNeedAck,
+                                                    byFBOption);
 
-                       buf->cts_duration_ba_f1 = cpu_to_le16(buf->cts_duration_ba_f1);
                        /* Get CTS Frame body */
                        buf->data.duration = buf->duration_ba;
 
 
                        /* Get CTSDuration_ba */
                        buf->duration_ba =
-                               cpu_to_le16((u16)s_uGetRTSCTSDuration(pDevice, CTSDUR_BA, cbFrameLength,
-                                                                     byPktType, wCurrentRate, bNeedAck,
-                                                                     byFBOption));
-
-                       buf->duration_ba = cpu_to_le16(buf->duration_ba);
+                               s_uGetRTSCTSDuration(pDevice, CTSDUR_BA,
+                                                    cbFrameLength, byPktType,
+                                                    wCurrentRate, bNeedAck,
+                                                    byFBOption);
 
                        /* Get CTS Frame body */
                        buf->data.duration = buf->duration_ba;