"read from offset 0x%x error %d", reg, err);
                return err;
        }
-       
+
        *val = 0;
        /* high byte comes first */
        if (data_length == OV2680_8BIT)
 
 static int ov2680_g_fnumber_range(struct v4l2_subdev *sd, s32 *val)
 {
-       
        *val = (OV2680_F_NUMBER_DEFAULT_NUM << 24) |
                (OV2680_F_NUMBER_DEM << 16) |
                (OV2680_F_NUMBER_DEFAULT_NUM << 8) | OV2680_F_NUMBER_DEM;
 {
        struct ov2680_device *dev = to_ov2680_sensor(sd);
        struct i2c_client *client = v4l2_get_subdevdata(sd);
-       
+
        *val = ov2680_res[dev->fmt_idx].bin_factor_y;
        dev_dbg(&client->dev,  "++++ov2680_g_bin_factor_y\n");
        return 0;
        struct ov2680_device *dev = to_ov2680_sensor(sd);
        u16 vts,hts;
        int ret,exp_val;
-       
+
        dev_dbg(&client->dev, "+++++++__ov2680_set_exposure coarse_itg %d, gain %d, digitgain %d++\n",coarse_itg, gain, digitgain);
 
        hts = ov2680_res[dev->fmt_idx].pixels_per_line;
        switch (cmd) {
        case ATOMISP_IOC_S_EXPOSURE:
                return ov2680_s_exposure(sd, arg);
-       
+
        default:
                return -EINVAL;
        }
        if (on == 0){
                ret = power_down(sd);
        } else {
-               ret = power_up(sd);     
+               ret = power_up(sd);
                if (!ret)
                        return ov2680_init(sd);
        }
                dev_dbg(&client->dev, "ov2680_s_stream one \n");
        else
                dev_dbg(&client->dev, "ov2680_s_stream off \n");
-       
+
        ret = ov2680_write_reg(client, OV2680_8BIT, OV2680_SW_STREAM,
                                enable ? OV2680_START_STREAMING :
                                OV2680_STOP_STREAMING);
                dev_err(&client->dev, "ov2680_detect err s_config.\n");
                goto fail_csi_cfg;
        }
-       
+
        /* turn off sensor, after probed */
        ret = power_down(sd);
        if (ret) {
 static int ov2680_g_skip_frames(struct v4l2_subdev *sd, u32 *frames)
 {
        struct ov2680_device *dev = to_ov2680_sensor(sd);
-       
+
        mutex_lock(&dev->input_lock);
        *frames = ov2680_res[dev->fmt_idx].skip_frames;
        mutex_unlock(&dev->input_lock);