SNDRV_PCM_IOCTL_RESET 591 include/uapi/sound/asound.h #define SNDRV_PCM_IOCTL_RESET _IO('A', 0x41) SNDRV_PCM_IOCTL_RESET 591 tools/include/uapi/sound/asound.h #define SNDRV_PCM_IOCTL_RESET _IO('A', 0x41)