Symbol: _snd_ctl_unregister_ioctl
sound/core/control.c
2128
return _snd_ctl_unregister_ioctl(fcn, &snd_control_ioctls);
sound/core/control.c
2142
return _snd_ctl_unregister_ioctl(fcn, &snd_control_compat_ioctls);