Maxim Devaev [off-list ref] writes:

The USB HID standard declares mandatory support for GET_IDLE and SET_IDLE
requests for Boot Keyboard. Most hosts can handle their absence, but others
like some old/strange UEFIs and BIOSes consider this a critical error
and refuse to work with f_hid.

This primitive implementation of saving and returning idle is sufficient
to meet the requirements of the standard and these devices.

Signed-off-by: Maxim Devaev <redacted>

yeah, I don't see any issues with this. If you have access to the tool,
mind running USBCV on the f_hid gadget? Would be cool to get some
confirmation that we're within spec.

That shouldn't gate $subject though.

Acked-by: Felipe Balbi <balbi@kernel.org>

-- 
balbi