pcm: snd_pcm_readi - plugin type multi, the overun appears when read

alsa-project/alsa-lib pull request #102 was opened from ouwenchen:

After type route use type multi, merge the two input streams.There was PCM error due to insufficient readable data.Cause the underlying read pointer cannot be updated, and then it will be overrun.

Request URL : https://github.com/alsa-project/alsa-lib/pull/102 Patch URL : https://github.com/alsa-project/alsa-lib/pull/102.patch Repository URL: https://github.com/alsa-project/alsa-lib