USB_ROOT_HUB_LOST_PO(9) USB Core APIs USB_ROOT_HUB_LOST_PO(9)
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 and carry out power-session
recovery for all the "USB-PERSIST"-enabled child devices; the others will be disconnected.
COPYRIGHT
Kernel Hackers Manual 2.6. July 2010 USB_ROOT_HUB_LOST_PO(9)
