#include <media/v4l2-device.h>
 #include <media/v4l2-ioctl.h>
 #include <media/v4l2-ctrls.h>
+#include <media/v4l2-fh.h>
+#include <media/v4l2-event.h>
 #include <sound/aci.h>
 
 static int radio_nr = -1;
 
 static const struct v4l2_file_operations pcm20_fops = {
        .owner          = THIS_MODULE,
+       .open           = v4l2_fh_open,
+       .poll           = v4l2_ctrl_poll,
+       .release        = v4l2_fh_release,
        .unlocked_ioctl = video_ioctl2,
 };
 
        .vidioc_s_tuner     = vidioc_s_tuner,
        .vidioc_g_frequency = vidioc_g_frequency,
        .vidioc_s_frequency = vidioc_s_frequency,
+       .vidioc_log_status  = v4l2_ctrl_log_status,
+       .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
+       .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
 };
 
 static const struct v4l2_ctrl_ops pcm20_ctrl_ops = {
        dev->vdev.ioctl_ops = &pcm20_ioctl_ops;
        dev->vdev.release = video_device_release_empty;
        dev->vdev.lock = &dev->lock;
+       set_bit(V4L2_FL_USE_FH_PRIO, &dev->vdev.flags);
        video_set_drvdata(&dev->vdev, dev);
 
        if (video_register_device(&dev->vdev, VFL_TYPE_RADIO, radio_nr) < 0)