snd_hwdep_dsp_status 49 include/sound/hwdep.h struct snd_hwdep_dsp_status *status); snd_hwdep_dsp_status 133 include/uapi/sound/asound.h #define SNDRV_HWDEP_IOCTL_DSP_STATUS _IOR('H', 0x02, struct snd_hwdep_dsp_status)