static int snd_pcm_xferi_frames_ioctl(struct snd_pcm_substream *substream,
				      struct snd_xferi __user *_xferi)
{
	struct snd_xferi xferi;
	struct snd_pcm_runtime *runtime = substream->runtime;
	snd_pcm_sframes_t result;

	if (runtime->status->state == SNDRV_PCM_STATE_OPEN)
		return -EBADFD;
	if (put_user(0, &_xferi->result))
		return -EFAULT;
	if (copy_from_user(&xferi, _xferi, sizeof(xferi)))
		return -EFAULT;
	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
		result = snd_pcm_lib_write(substream, xferi.buf, xferi.frames);
	else
		result = snd_pcm_lib_read(substream, xferi.buf, xferi.frames);
	if (put_user(result, &_xferi->result))
		return -EFAULT;
	return result < 0 ? result : 0;
}
static int snd_pcm_xferi_frames_ioctl(struct snd_pcm_substream *substream,
				      struct snd_xferi __user *_xferi)
{
	struct snd_xferi xferi;
	struct snd_pcm_runtime *runtime = substream->runtime;
	snd_pcm_sframes_t result;

	if (runtime->status->state == SNDRV_PCM_STATE_OPEN)
		return -EBADFD;
	if (put_user(0, &_xferi->result))
		return -EFAULT;
	if (copy_from_user(&xferi, _xferi, sizeof(xferi)))
		return -EFAULT;
	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
		result = snd_pcm_lib_write(substream, xferi.buf, xferi.frames);
	else
		result = snd_pcm_lib_read(substream, xferi.buf, xferi.frames);
	if (put_user(result, &_xferi->result))
		return -EFAULT;
	return result < 0 ? result : 0;
}