SNDRV_PCM_IOCTL_DRAIN 1203 sound/core/oss/pcm_oss.c ret = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DRAIN, NULL); SNDRV_PCM_IOCTL_DRAIN 1285 sound/core/oss/pcm_oss.c ret = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DRAIN, NULL); SNDRV_PCM_IOCTL_DRAIN 1654 sound/core/oss/pcm_oss.c err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DRAIN, NULL); SNDRV_PCM_IOCTL_DRAIN 494 sound/core/pcm_compat.c case SNDRV_PCM_IOCTL_DRAIN: SNDRV_PCM_IOCTL_DRAIN 2548 sound/core/pcm_native.c case SNDRV_PCM_IOCTL_DRAIN: