oss_ioctl_mixer
return oss_ioctl_mixer(l, &ap, retval);
error = oss_ioctl_mixer(l, LINUX_TO_OSS(uap), retval);
error = oss_ioctl_mixer(l, &ossuap, retval);
int oss_ioctl_mixer(struct lwp *, const struct oss_sys_ioctl_args *,
__weak_alias(oss_ioctl_mixer,rumplinux__stub);