centos man page for usb_sg_cancel

USB_SG_CANCEL(9)						   USB Core APIs						  USB_SG_CANCEL(9)

NAME
       usb_sg_cancel - stop scatter/gather i/o issued by usb_sg_wait

SYNOPSIS
       void usb_sg_cancel(struct usb_sg_request * io);

ARGUMENTS
       io
	   request block, initialized with usb_sg_init

DESCRIPTION
       This stops a request after it has been started by usb_sg_wait. It can also prevents one initialized by usb_sg_init from starting, so that
       call just frees resources allocated to the request.

COPYRIGHT
Kernel Hackers Manual 3.10					     June 2014							  USB_SG_CANCEL(9)