This solves some USB2.0 initialisation problems.
CONFIG_USB_DEVICEFS=y
CONFIG_USB_DEVICE_CLASS=y
CONFIG_USB_DYNAMIC_MINORS=y
CONFIG_USB_DEVICEFS=y
CONFIG_USB_DEVICE_CLASS=y
CONFIG_USB_DYNAMIC_MINORS=y
+# CONFIG_USB_SUSPEND is not set
# CONFIG_USB_OTG is not set
# CONFIG_USB_MON is not set
CONFIG_USB_WUSB=m
# CONFIG_USB_OTG is not set
# CONFIG_USB_MON is not set
CONFIG_USB_WUSB=m
CONFIG_USB_DEVICEFS=y
CONFIG_USB_DEVICE_CLASS=y
CONFIG_USB_DYNAMIC_MINORS=y
CONFIG_USB_DEVICEFS=y
CONFIG_USB_DEVICE_CLASS=y
CONFIG_USB_DYNAMIC_MINORS=y
+# CONFIG_USB_SUSPEND is not set
# CONFIG_USB_OTG is not set
# CONFIG_USB_MON is not set
CONFIG_USB_WUSB=m
# CONFIG_USB_OTG is not set
# CONFIG_USB_MON is not set
CONFIG_USB_WUSB=m