On Thu, 26 Nov 2020, Dean Camera wrote:

Currently the maximum HID report size which can be buffered by the
kernel is 8KB. This is sufficient for the vast majority of HID
devices on the market, as most HID reports are fairly small.

However, some unusual devices such as the Elgate Stream Deck exist
which use a report size slightly over 8KB for the image data that
is sent to the device. Reports these large cannot be buffered by
the regular HID subsystem currently, thus the only way to use such
device is to bypass the HID subsystem entirely.

This increases the maximum HID report size to 16KB, which should
cover all sanely designed HID devices.

Seeing the evolution of this constant over the course of years really 
reminds me of "640KB should be enough for everybody" :)

Applied, thanks Dean.

-- 
Jiri Kosina
SUSE Labs