snd_ctl_unregister_ioctl_compat  130 include/sound/control.h #define snd_ctl_unregister_ioctl_compat(fcn)
snd_ctl_unregister_ioctl_compat 1743 sound/core/control.c int snd_ctl_unregister_ioctl_compat(snd_kctl_ioctl_func_t fcn)