On Fri, Nov 27, 2020 at 09:42:03AM +0530, Srinivasa Rao Mandadapu wrote:
> To support playback continuation after resume problem in chrome
> audio server:
> Prepare device in  platform trigger callback.
> Make I2s and DMA control registers as non volatile.

What is the actual issue this is fixing?

As I have previously said please submit patches using subject lines
reflecting the style for the subsystem, this makes it easier for people
to identify relevant patches.  Look at what existing commits in the area
you're changing are doing and make sure your subject lines visually
resemble what they're doing.  There's no need to resubmit to fix this
alone.