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-device usb-host failing with usbip_vudc-vhdi_hcd gadget
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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