Re: [PATCH 0/1] reviving ack callback for 5.7(latest)

Hi

Thank you for the patch

ACK callback is useful to notify application pointer in DMA buffer to DSP, because it is called after application pointer is updated in ALSA. DSP can use the pointer to control preprocessing, detect underrun and so on. I'd like to revive it from 5.4 if it is possible. This patch is created in for-linus branch.

If you want to revive ACK, post with user driver patch is nice idea IMO. Otherwise, it will/might be removed again because of "there is no user driver".

Thank you for your help !!

Best regards --- Kuninori Morimoto