On Tue, 11 Mar 2008, Dmitry Torokhov wrote:

I think that if EV_ABS for a device is the one that really makes sense 
and the device sends EV_REL in error we should just adjust the type of 
events right in USBHID driver so incorrect events don't propagate any 
further. If hovewer preference of EV_ABS vs EV_REL is just something 
xf86-evdev wants just because of its internal architecture then the 
quirk belongs to xf86-evdev itself.
Jiri, apparently some 3Dconnexion devices send EV_REL which makes
xf86-evdev not too happy. What do you think?

Exactly, I fully agree with Dmitry here.

We can easily fix up the device report descriptor in the kernel code, so 
that it would send EV_ABS instead of EV_REL events. We do similar fixups 
(not this particular one) for quite a few devices already.

The real question here is whether it is really buggy device, or just 
EV_REL interpretation makes more sense so X input driver, but the device 
itself doesn't send buggy data. Could you please elaborate a little bit 
more?

Thanks,

-- 
Jiri Kosina
SUSE Labs