edca[XMIT_BE_QUEUE] = acParm;
                        break;
                case 0x1:
-                       SetHwReg8188EU(padapter, HW_VAR_AC_PARAM_BK, (u8 *)(&acParm));
+                       rtw_write32(padapter, REG_EDCA_BK_PARAM, acParm);
                        edca[XMIT_BK_QUEUE] = acParm;
                        break;
                case 0x2:
 
                haldata->AcParam_BE = ((u32 *)(val))[0];
                rtw_write32(Adapter, REG_EDCA_BE_PARAM, ((u32 *)(val))[0]);
                break;
-       case HW_VAR_AC_PARAM_BK:
-               rtw_write32(Adapter, REG_EDCA_BK_PARAM, ((u32 *)(val))[0]);
-               break;
        case HW_VAR_ACM_CTRL:
                {
                        u8 acm_ctrl = *((u8 *)val);
 
        HW_VAR_CAM_WRITE,
        HW_VAR_CAM_READ,
        HW_VAR_AC_PARAM_BE,
-       HW_VAR_AC_PARAM_BK,
        HW_VAR_ACM_CTRL,
        HW_VAR_AMPDU_MIN_SPACE,
        HW_VAR_AMPDU_FACTOR,