[alsa-devel] poll blocked after prepare state

Hi I have a problem when I got an underrun that my playback path is not working correctly any longer. I debugged the problem and see that the snd_pcm_direct_prepare function is called and than the snd_pcm_dshare_start function. After this the snd_pcm_write_areas is called and the snd_pcm_wait_nocheck never returns. He is blocked in the poll function. Is there any solution for this problem?! best regards Harald