Hi Brian

...

It is a littlle bit strange for me.

Yes, and honestly I'm a little confused by the inheritance in this framework.

Yes, I agree :) This is 1st prepare for future ALSA SoC framework cleanup It is Lars-Peter's idea

I have a feeling you're checking the wrong thing below for this case.

If so, we should fix this "wrong thing" ?

All I know is that I'm definitely hitting a NULL platform->driver->pcm_new callback, and that either reverting your patch or applying the patch I just sent fixes it.

I want to know why this happen. Can you show me which driver is calling snd_soc_add_platform() in your case ?