[PATCH libinput 0/4] touchpad: don't auto-enable the hysteresis

[Peter Hutterer]

The hysteresis code is a pendulum between people complaining that the
hysteresis switched on, followed by people complaining that it didn't switch
on.

So this is the next attempt - using the kernel fuzz for
what it was theoretically intended. Except we can't (see 0/3 and commit
1523d8bb2e06) but we can still store the fuzz in the hwdb so it applies to
each series of devices.

This removes the need for any heuristic in libinput beyond what we need to
point the user to the documentation. It makes the fuzz adjustible per series
and lets users override it locally if for some reason the generic value
doesn't work.

Cheers,
  Peter