Hi Heikki,
I will let Bryan to comment, I am using the driver to support the pdphy in SMB2352 and there is no external regulator required, so I am just using a dummy regulator device and I saw this unbalanced regulator disabling warnings, so my intention for this change is just fixing the warning message. However, I am fine with whatever suggestion you have, since the logic is straightforward, and I can make the changes once you have the agreement.
Thanks,
Hui