SNDRV_CTL_IOCTL_TLV_READ 1548 sound/core/control.c case SNDRV_CTL_IOCTL_TLV_READ: SNDRV_CTL_IOCTL_TLV_READ 452 sound/core/control_compat.c case SNDRV_CTL_IOCTL_TLV_READ: