val |= MASK_ADC_DC_CAL_STR;
        hw_set_dxx_reg(phw_data, REG_MODE_CTRL, val);
-       pa_stall_execution(US); // *MUST* wait for a while
 
        // e. The result are shown in "adc_dc_cal_i[8:0] and adc_dc_cal_q[8:0]"
 #ifdef _DEBUG
        reg_mode_ctrl |= (MASK_CALIB_START|2|(2<<2));
        hw_set_dxx_reg(phw_data, REG_MODE_CTRL, reg_mode_ctrl);
        PHY_DEBUG(("[CAL]    MODE_CTRL (write) = 0x%08X\n", reg_mode_ctrl));
-       pa_stall_execution(US);
 
        hw_get_dxx_reg(phw_data, 0x5C, ®_dc_cancel);
        PHY_DEBUG(("[CAL]    DC_CANCEL (read) = 0x%08X\n", reg_dc_cancel));
                reg_dc_cancel &= ~(0x03FF);
                PHY_DEBUG(("[CAL]    DC_CANCEL (write) = 0x%08X\n", reg_dc_cancel));
                hw_set_dxx_reg(phw_data, 0x5C, reg_dc_cancel);
-               pa_stall_execution(US);
 
                hw_get_dxx_reg(phw_data, REG_CALIB_READ2, &val);
                PHY_DEBUG(("[CAL]    CALIB_READ2 = 0x%08X\n", val));
                reg_dc_cancel |= (1 << CANCEL_DC_I_SHIFT);
                PHY_DEBUG(("[CAL]    DC_CANCEL (write) = 0x%08X\n", reg_dc_cancel));
                hw_set_dxx_reg(phw_data, 0x5C, reg_dc_cancel);
-               pa_stall_execution(US);
 
                hw_get_dxx_reg(phw_data, REG_CALIB_READ2, &val);
                PHY_DEBUG(("[CAL]    CALIB_READ2 = 0x%08X\n", val));
        reg_mode_ctrl &= ~MASK_CALIB_START;
        hw_set_dxx_reg(phw_data, REG_MODE_CTRL, reg_mode_ctrl);
        PHY_DEBUG(("[CAL]    MODE_CTRL (write) = 0x%08X\n", reg_mode_ctrl));
-       pa_stall_execution(US);
 }
 
 ///////////////////////////////////////////////////////
        reg_mode_ctrl |= (MASK_CALIB_START|3);
        hw_set_dxx_reg(phw_data, REG_MODE_CTRL, reg_mode_ctrl);
        PHY_DEBUG(("[CAL]    MODE_CTRL (write) = 0x%08X\n", reg_mode_ctrl));
-       pa_stall_execution(US);
 
        hw_get_dxx_reg(phw_data, 0x5C, ®_dc_cancel);
        PHY_DEBUG(("[CAL]    DC_CANCEL (read) = 0x%08X\n", reg_dc_cancel));
                reg_dc_cancel &= ~(0x001F);
                PHY_DEBUG(("[CAL]    DC_CANCEL (write) = 0x%08X\n", reg_dc_cancel));
                hw_set_dxx_reg(phw_data, 0x5C, reg_dc_cancel);
-               pa_stall_execution(US);
 
                hw_get_dxx_reg(phw_data, REG_CALIB_READ2, &val);
                PHY_DEBUG(("[CAL]    CALIB_READ2 = 0x%08X\n", val));
-               pa_stall_execution(US);
 
                iqcal_image_i = _s13_to_s32(val & 0x00001FFF);
                iqcal_image_q = _s13_to_s32((val & 0x03FFE000) >> 13);
                reg_dc_cancel |= (1 << CANCEL_DC_Q_SHIFT);
                PHY_DEBUG(("[CAL]    DC_CANCEL (write) = 0x%08X\n", reg_dc_cancel));
                hw_set_dxx_reg(phw_data, 0x5C, reg_dc_cancel);
-               pa_stall_execution(US);
 
                hw_get_dxx_reg(phw_data, REG_CALIB_READ2, &val);
                PHY_DEBUG(("[CAL]    CALIB_READ2 = 0x%08X\n", val));
-               pa_stall_execution(US);
 
                iqcal_image_i = _s13_to_s32(val & 0x00001FFF);
                iqcal_image_q = _s13_to_s32((val & 0x03FFE000) >> 13);
        reg_mode_ctrl &= ~MASK_CALIB_START;
        hw_set_dxx_reg(phw_data, REG_MODE_CTRL, reg_mode_ctrl);
        PHY_DEBUG(("[CAL]    MODE_CTRL (write) = 0x%08X\n", reg_mode_ctrl));
-       pa_stall_execution(US);
 }
 
 //20060612.1.a 20060718.1 Modify
                        reg_mode_ctrl |= (MASK_CALIB_START|0x02|2<<2);
                        hw_set_dxx_reg(phw_data, REG_MODE_CTRL, reg_mode_ctrl);
                        PHY_DEBUG(("[CAL]    MODE_CTRL (write) = 0x%08X\n", reg_mode_ctrl));
-                       pa_stall_execution(US);
 
                        // b.
                        hw_get_dxx_reg(phw_data, REG_CALIB_READ1, &val);
                        PHY_DEBUG(("[CAL]    CALIB_READ1 = 0x%08X\n", val));
-                       pa_stall_execution(US);
 
                        iqcal_tone_i0 = _s13_to_s32(val & 0x00001FFF);
                        iqcal_tone_q0 = _s13_to_s32((val & 0x03FFE000) >> 13);
                        reg_mode_ctrl &= ~MASK_CALIB_START;
                        hw_set_dxx_reg(phw_data, REG_MODE_CTRL, reg_mode_ctrl);
                        PHY_DEBUG(("[CAL]    MODE_CTRL (write) = 0x%08X\n", reg_mode_ctrl));
-                       pa_stall_execution(US);
 
                        // d. Set iqcal_mode[1:0] to 0x3 and set "calib_start" to 0x1 to
                        //    enable "IQ alibration Mode II"
                        reg_mode_ctrl |= (MASK_CALIB_START|0x03);
                        hw_set_dxx_reg(phw_data, REG_MODE_CTRL, reg_mode_ctrl);
                        PHY_DEBUG(("[CAL]    MODE_CTRL (write) = 0x%08X\n", reg_mode_ctrl));
-                       pa_stall_execution(US);
 
                        // e.
                        hw_get_dxx_reg(phw_data, REG_CALIB_READ1, &val);
                        PHY_DEBUG(("[CAL]    CALIB_READ1 = 0x%08X\n", val));
-                       pa_stall_execution(US);
 
                        iqcal_tone_i = _s13_to_s32(val & 0x00001FFF);
                        iqcal_tone_q = _s13_to_s32((val & 0x03FFE000) >> 13);
                if( !hw_set_dxx_reg(phw_data, REG_MODE_CTRL, reg_mode_ctrl) )//20060718.1 modify
                        return 0;
                PHY_DEBUG(("[CAL]    MODE_CTRL (write) = 0x%08X\n", reg_mode_ctrl));
-               pa_stall_execution(US);
 
                reg_mode_ctrl &= ~MASK_IQCAL_MODE;
                reg_mode_ctrl |= (MASK_CALIB_START|0x1);
                hw_set_dxx_reg(phw_data, REG_MODE_CTRL, reg_mode_ctrl);
                PHY_DEBUG(("[CAL]    MODE_CTRL (write) = 0x%08X\n", reg_mode_ctrl));
-               pa_stall_execution(US);  //Should be read out after 450us
 
                // c.
                hw_get_dxx_reg(phw_data, REG_CALIB_READ1, &val);
                phy_set_rf_data(phw_data, 5, ((5<<24)|current_txvga) );
                phw_data->txvga_setting_for_cal = current_txvga;
 
-               //pa_stall_execution(30000);//Sleep(30);
                msleep(30); // 20060612.1.a
 
                if( !hw_get_dxx_reg(phw_data, REG_MODE_CTRL, ®_mode_ctrl) ) // 20060718.1 modify
                hw_set_dxx_reg(phw_data, REG_MODE_CTRL, reg_mode_ctrl);
                PHY_DEBUG(("[CAL]    MODE_CTRL (write) = 0x%08X\n", reg_mode_ctrl));
 
-               //pa_stall_execution(US);
                udelay(1); // 20060612.1.a
 
-               //pa_stall_execution(300);//Sleep(30);
                udelay(300); // 20060612.1.a
 
                // b.
                hw_get_dxx_reg(phw_data, REG_CALIB_READ1, &val);
 
                PHY_DEBUG(("[CAL]    CALIB_READ1 = 0x%08X\n", val));
-               //pa_stall_execution(US);
-               //pa_stall_execution(300);//Sleep(30);
                udelay(300); // 20060612.1.a
 
                iqcal_tone_i0 = _s13_to_s32(val & 0x00001FFF);