usb_bus_start_enum (9) Linux Manual Page
usb_bus_start_enum – start immediate enumeration (for OTG)
Synopsis
int usb_bus_start_enum(struct usb_bus *bus, unsigned port_num);Arguments
bus
-
- the bus (must use hcd framework)
port_num
- 1-based number of port; usually bus->otg_port
Context
in_interrupt
Description
Starts enumeration, with an immediate reset followed later by hub_wq identifying and possibly configuring the device. This is needed by OTG controller drivers, where it helps meet HNP protocol timing requirements for starting a port reset.
Return
0 if successful.