snd_pcm_status_x32 255 sound/core/pcm_compat.c struct snd_pcm_status_x32 __user *src, snd_pcm_status_x32 632 sound/core/pcm_compat.c SNDRV_PCM_IOCTL_STATUS_X32 = _IOR('A', 0x20, struct snd_pcm_status_x32), snd_pcm_status_x32 633 sound/core/pcm_compat.c SNDRV_PCM_IOCTL_STATUS_EXT_X32 = _IOWR('A', 0x24, struct snd_pcm_status_x32),