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SubjectRe: [PATCH v2 0/9] Add support for Microsoft Surface System Ag gregator Module
> 
> > 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

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