RT-Thread/rt-thread — pull request #100 by grissiom (2013-06-06 07:25:17+00:00)
Title: usb: add USB_MSG_PLUG_OUT event

When the core received an USB_MSG_PLUG_OUT event, it will stop all the
classes. This make a chance that the classes could get rid off doing
useless stuff while the USB cable is plugged out.