From f7eea5548a6e0cd88f0a0fcc12cdbd67ec25cc20 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Marek=20Marczykowski-G=C3=B3recki?=
 <marmarek@invisiblethingslab.com>
Date: Fri, 8 Jul 2016 10:40:12 +0200
Subject: [PATCH] udev: make USB device version detection more generic

Apparently some devices do not comply with standards (there is no such
thing as USB version 2.01), but other than that works fine. So take into
account only the major number of bcdUSB field.

Fixes QubesOS/qubes-issues#2158
---
 udev/udev-usb-add-change | 12 +-----------
 1 file changed, 1 insertion(+), 11 deletions(-)

diff --git a/udev/udev-usb-add-change b/udev/udev-usb-add-change
index 3e9da35..1903674 100755
--- a/udev/udev-usb-add-change
+++ b/udev/udev-usb-add-change
@@ -21,17 +21,7 @@ XSNAME=`basename ${DEVPATH} | tr . _`
 #DESC=`python -c "dev='%d-%d' % (int('${BUSNUM}'.lstrip('0')), (int('${DEVNUM}'.lstrip('0'))-1)); from xen.util import vusb_util; print vusb_util.get_usbdevice_info(dev);"`
 DESC="${ID_VENDOR_ID}:${ID_MODEL_ID} ${ID_SERIAL}"
 
-VERSION=`cat /sys/$DEVPATH/version`
-if [ "${VERSION}" = " 1.00" -o "${VERSION}" = " 1.10" ] ; then
-	VERSION=1
-elif [ "${VERSION}" = " 2.00" -o "${VERSION}" = " 2.10" ] ; then
-	VERSION=2
-elif [ "${VERSION}" = " 3.00" -o "${VERSION}" = " 3.10" ] ; then
-	VERSION=3
-else
-	# FIXME: silently ignoring devices with unexpected USB version
-	exit 0
-fi
+VERSION=`cat /sys/$DEVPATH/version | tr -d ' '|cut -f 1 -d .`
 
 # ignore usbip-connected devices, as most likely already passed through from
 # another VM