centos man page for usb_gadget_wakeup

USB_GADGET_WAKEUP(9)					      Kernel Mode Gadget API					      USB_GADGET_WAKEUP(9)

NAME
       usb_gadget_wakeup - tries to wake up the host connected to this gadget

SYNOPSIS
       int usb_gadget_wakeup(struct usb_gadget * gadget);

ARGUMENTS
       gadget
	   controller used to wake up the host

DESCRIPTION
       Returns zero on success, else negative error code if the hardware doesn't support such attempts, or its support has not been enabled by the
       usb host. Drivers must return device descriptors that report their ability to support this, or hosts won't enable it.

       This may also try to use SRP to wake the host and start enumeration, even if OTG isn't otherwise in use. OTG devices may also start remote
       wakeup even when hosts don't explicitly enable it.

AUTHOR
       David Brownell <dbrownell@users.sourceforge.net>
	   Author.

COPYRIGHT
Kernel Hackers Manual 3.10					     June 2014						      USB_GADGET_WAKEUP(9)