Comment 7 for bug 787451

Ludovic Rousseau,

Hello. I am a VMware USb developer and I am trying to deal with this issue. What we when an user wants to connect a physical device to the guest aka passthrogh is to knock off the current driver loaded for the device and claim the interfaces. While this approach works if a kernel driver is loaded against the device, it does not if pcscd/libccid is the driver.

I do not get an error from usbfs but my demsg buffer is filled with vmx-tried to use interface 0 before claiming.

Any suggestions how else we could address this problem?

I do not have examples of knocking off other user space drivers working well., since other USB device (mass storage, audio, video) use kernel drivers.