snd_hda_intel: Woke up but no data

[GitHub issues - opened]

alsa-project/alsa-lib issue #262 was opened from shmohawk:

```
Aug 17 01:11:23 hellokitty pulseaudio[12938]: [alsa-sink-CX20590 Analog] alsa-sink.c: ALSA woke us up to write new data to the device, but there was actually nothing to write.
Aug 17 01:11:23 hellokitty pulseaudio[12938]: [alsa-sink-CX20590 Analog] alsa-sink.c: Most likely this is a bug in the ALSA driver 'snd_hda_intel'. Please report this issue to the ALSA developers.
Aug 17 01:11:23 hellokitty pulseaudio[12938]: [alsa-sink-CX20590 Analog] alsa-sink.c: We were woken up with POLLOUT set -- however a subsequent snd_pcm_avail() returned 0 or another value < min_avail.
```

It is symptomous with a crackling sound for ~5 seconds after any playback starts.

Issue URL     : https://github.com/alsa-project/alsa-lib/issues/262
Repository URL: https://github.com/alsa-project/alsa-lib