SNDRV_CTL_IOCTL_PCM_NEXT_DEVICE 985 include/uapi/sound/asound.h #define SNDRV_CTL_IOCTL_PCM_NEXT_DEVICE _IOR('U', 0x30, int) SNDRV_CTL_IOCTL_PCM_NEXT_DEVICE 985 tools/include/uapi/sound/asound.h #define SNDRV_CTL_IOCTL_PCM_NEXT_DEVICE _IOR('U', 0x30, int)