kfifo_to_user
err = kfifo_to_user(&counter->events, buf, len, &copied);
ret = kfifo_to_user(&gdev->read_fifo, buf, count, &copied);
ret = kfifo_to_user(&list->hid_debug_fifo, buffer, count, &copied);
ret = kfifo_to_user(&sensor_inst->data_fifo, buf, count,
ret = kfifo_to_user(&kf->kf, buf, n, &copied);
ret = kfifo_to_user(&ev_int->det_events, buf, count, &copied);
if (kfifo_to_user(&radio->core->rds_fifo, buf,
ret = kfifo_to_user(&fh->rawir, buffer, length, &copied);
ret = kfifo_to_user(&fh->scancodes, buffer, length, &copied);
status = kfifo_to_user(&client->buffer, buf, count, &copied);
status = kfifo_to_user(&client->buffer, buf, count, &copied);
if (kfifo_to_user(&priv->event_fifo, buf,
ret = kfifo_to_user(&chan->fifo, buffer, count, &copied);
ret = kfifo_to_user(&test, buf, count, &copied);
ret = kfifo_to_user(&test, buf, count, &copied);
ret = kfifo_to_user(&test, buf, count, &copied);
if (kfifo_to_user(fifo, to, count, &copied))
rv = kfifo_to_user(&line6->messages.fifo, buf, count, &out_count);