> > > More on that, the whole purpose of proposed interface is to debug and > > not intended to be used by any user space code. > > The purpose is to provide raw access to the Surface Serial Hub protocol, > just like we provide raw access to USB devices and have hidraw devices. > > So this goes a litle beyond just debugging; and eventually the choice > may be made to implement some functionality with userspace drivers, > just like we do for some HID and USB devices. > > Still I agree with you that adding new userspace API is something which > needs to be considered carefully. So I will look at this closely when > reviewing this set. To add to that: this was previously a debugfs interface but was moved to misc after review on the initial RFC: https://lkml.org/lkml/2020/9/24/96
