[16037.958545] radio_usb_si470x: Unknown symbol video_ioctl2
[16037.958778] radio_usb_si470x: Unknown symbol v4l2_ctrl_query_fill
[16037.958882] radio_usb_si470x: Unknown symbol video_devdata
[16037.959144] radio_usb_si470x: Unknown symbol video_unregister_device
[16037.959270] radio_usb_si470x: Unknown symbol video_device_alloc
[16037.959339] radio_usb_si470x: Unknown symbol video_register_device
[16037.959533] radio_usb_si470x: Unknown symbol video_device_release