On Sat, 14 Jun 2008, Dan Nicholson wrote:

Some Logitech mice have a tilt wheel which register as HWHEEL buttons.
The events are positive for a click to the right and negative for a
click to the left. Applications expect the opposite, though.
I suspect this affects a lot more Logitech mice, but these are the only
two I have. I tested this using evtest and a GTK application. A similar
Microsoft Intellimouse I have works correctly.

Thanks Dan, applied.

-- 
Jiri Kosina
SUSE Labs