Comment 25 for bug 1771431

Kai-Heng: I just tested your kernel, but it didn't solve the keyboard issue. However, it seemed to screw up the mouse, which of course has the same vendor and device id, since they operate through the same usb connector. With this kernel the mouse was making large erratic jumps and generating click events when I was just moving the mouse.

Is it possible that the fix was somehow modifying the report data coming from the mouse instead of the report data coming from the keyboard?