After add a USB device by "usb_add", I can view it by "info usb". It shows the bus number and address.
As shown in vl.c, it seems that usb_info() is called when issue "info usb", and usb_device_add() is called when issue "usb_add". But if I add call to usb_info() in the end of usb_device_add(), it always show the bus number and address as "0.0", which can be different from the output of "usb_add". So it seems like the bus number and address of a USB device changed some time after "usb_add". Does anyone know why it changes? Thanks in advance! Thanks Xiaoyang
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