USB_ROOT_HUB_LOST_PO(9) USB Core APIs USB_ROOT_HUB_LOST_PO(9)NAMEusb_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 and carry out power-session
recovery for all the “USB-PERSIST”-enabled child devices; the others
will be disconnected.
COPYRIGHTKernel Hackers Manual 2.6. November 2013 USB_ROOT_HUB_LOST_PO(9)