Interchanging the positions of wPortChange and wPortStatus as you did is clearly wrong, likewise for wHubChange and wHubStatus. Their order is fixed by the USB specification, and the controller can't change it -- if it did then it would corrupt _every_ byte stream sent to/from a USB device.
Alan Stern
Because our board is big endian,so if we want exchange data with usb devices(little endian),we must do cpu_to_le(swapping is done by our ohci
controller).When we get wPortChange and wPortStatus of port,ohci controller
transform little endian to big endian.So the stucture usb_port_status have reversed order compared to standard port_status.So we must Interchanging the positions of wPortChange and wPortStatus.
Regards yfw
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