[alsa-devel] poll blocked after prepare state

I found out that an underrun occours and so the pcm_prepare function for pcm_direct is called and then pcm_start_dshare is called. Both functions returns without any error but the playback path is blocked in the snd_pcm_wait_nocheck function. I read that there was an similar problem before in the group but i didn't found any solution. Is this a problem in the driver and how can i go forward to fix it. The codec is a tlv320aic3x-audio. Thanks for your help.

best regards Harald