How to clear buffer before call libevdev_next_event

[Knoppix]

Hi,

I set some calibration/settings on input device (*turn device wheel to
left. I did this with write() function*) while this happens input system
gathers data. So when I first call libevdev_next_event it gives me old
garbage data. But I dont want those.

How can I flush/clear buffered data with libevdev? Is there any way?

(*Execuse me for my english I am not native*)

Yours Sincerely..