Linkit Smart 7688 - open wi-fi driver - FCC

We've been evaluating the latest openwrt with the open wi-fi driver for linkit smart 7688,
as distinct from the closed wi-fi driver from mediatek, mainly because the closed driver is vulnerable to krack.

Just wondering if anyone has validated the open driver against FCC limits?

e.g. the potential for a change that breaks power levels or affects side band constraints presumably exists with changing the driver. So has anyone tested this?