[Bug 1626207] Re: -device usb-host failing with usbip_vudc-vhdi_hcd gadget

[Thomas Huth]

The QEMU project is currently considering to move its bug tracking to another 
system. For this we need to know which bugs are still valid and which could be 
closed already. Thus we are setting older bugs to "Incomplete" now.
If you still think this bug report here is valid, then please switch the state 
back to "New" within the next 60 days, otherwise this report will be marked as 
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** Changed in: qemu
       Status: New => Incomplete

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Title:
  -device usb-host failing with usbip_vudc-vhdi_hcd gadget

Status in QEMU:
  Incomplete

Bug description:
  I must admit that I do not know if this is a Qemu or a Kernel issue,
  but I try reporting here:

  When I try to forward a copy of my USB mouse that I made with the new virtual 
USB device controller in kernel 4.7 I get the following in my log:
  [  +0.703256] usb 1-4: reset full-speed USB device number 3 using xhci_hcd
  [  +1.020776] usb usb7-port3: Cannot enable. Maybe the USB cable is bad?
  [  +0.855013] usb usb7-port3: Cannot enable. Maybe the USB cable is bad?
  [  +0.859052] usb usb7-port3: Cannot enable. Maybe the USB cable is bad?
  [  +0.857000] usb usb7-port3: Cannot enable. Maybe the USB cable is bad?
  [  +0.000141] usb 7-3: USB disconnect, device number 10
  [  +0.153056] usb 1-4: reset full-speed USB device number 3 using xhci_hcd
  [  +0.703746] usb usb7-port3: Cannot enable. Maybe the USB cable is bad?
  [  +0.855001] usb usb7-port3: Cannot enable. Maybe the USB cable is bad?
  [  +0.855006] usb usb7-port3: Cannot enable. Maybe the USB cable is bad?
  [  +0.855005] usb usb7-port3: Cannot enable. Maybe the USB cable is bad?
  [  +0.000009] usb usb7-port3: unable to enumerate USB device

  the commands I use for makeing the virtual device are(after making a copy of 
the report description of my real mouse in /root/usb/kingston_report_desc):
          mkdir /sys/kernel/config/usb_gadget/winmouse
          cd /sys/kernel/config/usb_gadget/winmouse
          echo "0x047d" > idVendor
          echo "0x1020" > idProduct
          mkdir strings/0x409
          echo 2016 > strings/0x409/serialnumber
          echo Kensington > strings/0x409/manufacturer
          echo "Kensington Expert Mouse" > strings/0x409/product
          mkdir configs/c.1
          mkdir configs/c.1/strings/0x409
          mkdir functions/hid.usb2
          echo 2 > functions/hid.usb2/protocol
          echo 1 > functions/hid.usb2/subclass
          echo 4 > functions/hid.usb2/report_length
          cat /root/usb/kingston_report_desc > functions/hid.usb2/report_desc
          echo 0xa0 > configs/c.1/bmAttributes
          echo 100 > configs/c.1/MaxPower

          ln -s functions/hid.usb2 configs/c.1
          echo usbip-vudc.2 > UDC

          usbip attach -r localhost -d usbip-vudc.2

  The virtual mouse then shows up as Bus7,Dev10 and I use the option
  -device usb-host,hostbus=7,hostaddr=10,id=hostdev6,bus=usb.0,port=2 in
  Qemu to attach it.

  This is Qemu 2.7.0 on kernel 4.7.4

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