thp/psmoveapi — pull request #111 by whitingjp (2014-06-10 09:31:15+00:00)
Title: Prevent crashes when calibration hid_get_feature_report fails.

Prevent the two crashes I've found when running on a kernel that suffers from issue #108.
Added a warning if a #108 style issue is detected, to (hopefully) make it easier for others suffering this issue to diagnose.