Re: [libvirt] [v5 PATCH] qemu: call usb search function for hostdev initialization and hotplug

src/qemu/qemu_hostdev.c: refactor qemuPrepareHostdevUSBDevices function, make it focus on adding usb device to activeUsbHostdevs after check. After that, the usb hotplug function qemuDomainAttachHostDevice also could use it. expand qemuPrepareHostUSBDevices to perform the usb search, rollback on failure. src/qemu/qemu_hotplug.c: If there are multiple usb devices available with same vendorID and productID, but with different value of "bus, device", we give an error to let user use <address> to specify the desired one. --- src/qemu/qemu_hostdev.c | 120 ++++++++++++++++++++++++++++------------------- src/qemu/qemu_hostdev.h | 3 +- src/qemu/qemu_hotplug.c | 69 +++++++++++++++++++-------- 3 files changed, 122 insertions(+), 70 deletions(-)