From: Antonio Ospite <ao2@ao2.it>
Date: Tue, 5 Jan 2016 22:41:07 +0000 (+0100)
Subject: kinect_upload_fw: make libusb initialization more robust
X-Git-Tag: v0.4~2
X-Git-Url: https://git.ao2.it/kinect-audio-setup.git/commitdiff_plain/c264133a0b6589d30b5f3e4b65a09d3c5b9bafaf?hp=c264133a0b6589d30b5f3e4b65a09d3c5b9bafaf

kinect_upload_fw: make libusb initialization more robust

Check the return values of all the libusb functions.

Also return more sensible values when ret is not immediately useful.
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