Customer request the following upstream commit to fix a usb pass through issue. Please see the detailed descrition in the following link: https://github.com/qemu/qemu/commit/896b6757f9c4d176ce4439238efea223a2952411 its accepted by QEMU upstream and committed to upstream source. Customer see this issue when they passing a Sierra modem as USB pass through to VM. Please intergrate this commit ASAP
