Name

usb_root_hub_lost_power — called by HCD if the root hub lost Vbus power

Synopsis

void usb_root_hub_lost_power (struct usb_device *  rhdev);

Arguments

rhdev

struct usb_device for the root hub

Description

The USB host controller driver calls this function when its root hub is resumed and Vbus power has been interrupted or the controller has been reset. The routine marks rhdev as having lost power. When the hub driver is resumed it will take notice; if CONFIG_USB_PERSIST is enabled then it will carry out power-session recovery, otherwise it will disconnect all the child devices.