SNDRV_CTL_ELEM_IFACE_CARD 850 include/uapi/sound/asound.h #define SNDRV_CTL_ELEM_IFACE_CARD ((__force snd_ctl_elem_iface_t) 0) /* global control */ SNDRV_CTL_ELEM_IFACE_CARD 850 tools/include/uapi/sound/asound.h #define SNDRV_CTL_ELEM_IFACE_CARD ((__force snd_ctl_elem_iface_t) 0) /* global control */