commit d33e6b1a4951e6492afd56f30c98d8e3f2f45a6c
Author: Marc-André Lureau <marcandre.lureau>
Date:   Wed Mar 12 22:35:25 2014 +0100

    Use a USB icon in the fullscreen toolbar

I can reproduce with package: virt-viewer-0.5.7-7.el7.x86_64
and verified with latest build: virt-viewer-0.6.0-1.el7.x86_64
steps:

1. Prepare a guest with usbredirection support.

1.1 Prepare a .cfg file in /etc/qemu:

# cat ich9-ehci-uhci.cfg

###########################################################################
#
# You can pass this file directly to qemu using the -readconfig
# command line switch.
#
# This config file creates a EHCI adapter with companion UHCI
# controllers as multifunction device in PCI slot "1d".
#
# Specify "bus=ehci.0" when creating usb devices to hook them up
# there.
#

[device "ehci"]
  driver = "ich9-usb-ehci1"
  addr = "1d.7"
  multifunction = "on"

[device "uhci-1"]
  driver = "ich9-usb-uhci1"
  addr = "1d.0"
  multifunction = "on"
  masterbus = "ehci.0"
  firstport = "0"

[device "uhci-2"]
  driver = "ich9-usb-uhci2"
  addr = "1d.1"
  multifunction = "on"
  masterbus = "ehci.0"
  firstport = "2"

[device "uhci-3"]
  driver = "ich9-usb-uhci3"
  addr = "1d.2"
  multifunction = "on"
  masterbus = "ehci.0"
  firstport = "4"


1.2 Create a new spice-enabled vm using virt-manager, select spice as display type and qxl as video card model, when asked if you want to enable the agent channel, say yes.

1.3 When done, close virt-manager and edit the relevant /etc/libvirt/qemu/rhel7.xml file. Change the first line to:

<domain type='kvm' xmlns:qemu='http://libvirt.org/schemas/domain/qemu/1.0'>
And add the following lines at the end, above the "</domain>" line: 

  <qemu:commandline>
     <qemu:arg value='-readconfig'/>
     <qemu:arg value='/etc/qemu/ich9-ehci-uhci.cfg'/>
     <qemu:arg value='-chardev'/>
     <qemu:arg value='spicevmc,name=usbredir,id=usbredirchardev1'/>
     <qemu:arg value='-device'/>
     <qemu:arg value='usb-redir,chardev=usbredirchardev1,id=usbredirdev1,bus=ehci.0,debug=3'/>
     <qemu:arg value='-chardev'/>
     <qemu:arg value='spicevmc,name=usbredir,id=usbredirchardev2'/>
     <qemu:arg value='-device'/>
     <qemu:arg value='usb-redir,chardev=usbredirchardev2,id=usbredirdev2,bus=ehci.0,debug=3'/>
     <qemu:arg value='-chardev'/>
     <qemu:arg value='spicevmc,name=usbredir,id=usbredirchardev3'/>
     <qemu:arg value='-device'/>
     <qemu:arg value='usb-redir,chardev=usbredirchardev3,id=usbredirdev3,bus=ehci.0,debug=3'/>
  </qemu:commandline>

1.4 close down any virtual machines you may have open , and restart libvirtd
 # service libvirtd restart

2. use virt-viewer to open an existing guest.
# virt-viewer sound
or
# remote-viewer spice://ip:port

3. click view->full screen
we can see USB icon for USB device redirection "USB device selection".

so changed from "ON_QA" to "VERIFIED".

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://rhn.redhat.com/errata/RHBA-2015-0295.html