It turns out that the implementation of the high resolution support of Logitech wheels is rather incompatible with the mice from Microsoft. We had a lengthy discussion off-list and the summary is quoted in 7/7. The TL;DR, we need to revert the current series before it gets out in a released kernel and work on a better approach for 4.21. This patch series has informally been acked by Dmitry, Harry, Jiri, Nestor and Peter, but I wouldn't mind a public ack before I push this to the for-linus branch. Dmitry, I chose to also revert "Input: Add the `REL_WHEEL_HI_RES` event code" as the documentation needs to be updated. I would understand if you rather keep the patch that way and we just update the doc. This would help synchronizing the trees. So please tell me if you want 7/7 in the series or not (I'll reshuffle the commit message to have the summary from Peter). Cheers, Benjamin Benjamin Tissoires (7): Revert "HID: input: simplify/fix high-res scroll event handling" Revert "HID: logitech: fix a used uninitialized GCC warning" Revert "HID: logitech: Use LDJ_DEVICE macro for existing Logitech mice" Revert "HID: logitech: Enable high-resolution scrolling on Logitech mice" Revert "HID: logitech: Add function to enable HID++ 1.0 "scrolling acceleration"" Revert "HID: input: Create a utility class for counting scroll events" Revert "Input: Add the `REL_WHEEL_HI_RES` event code" Documentation/input/event-codes.rst | 11 +- drivers/hid/hid-input.c | 44 ---- drivers/hid/hid-logitech-hidpp.c | 309 +++---------------------- include/linux/hid.h | 28 --- include/uapi/linux/input-event-codes.h | 10 - 5 files changed, 28 insertions(+), 374 deletions(-) -- 2.19.1