static int oss_ctl_in (HWVoiceIn *hw, int cmd, ...) { OSSVoiceIn *oss = (OSSVoiceIn *) hw; switch (cmd) { case VOICE_ENABLE: { va_list ap; int poll_mode; va_start (ap, cmd); poll_mode = va_arg (ap, int); va_end (ap); if (poll_mode && oss_poll_in (hw)) { poll_mode = 0; } hw->poll_mode = poll_mode; } break; case VOICE_DISABLE: if (hw->poll_mode) { hw->poll_mode = 0; qemu_set_fd_handler (oss->fd, NULL, NULL, NULL); } break; } return 0; }