SNDRV_HWDEP_IOCTL_PVERSION 234 sound/core/hwdep.c case SNDRV_HWDEP_IOCTL_PVERSION: SNDRV_HWDEP_IOCTL_PVERSION 54 sound/core/hwdep_compat.c case SNDRV_HWDEP_IOCTL_PVERSION: