centos man page for usb_get_urb

USB_GET_URB(9)							   USB Core APIs						    USB_GET_URB(9)

NAME
       usb_get_urb - increments the reference count of the urb

SYNOPSIS
       struct urb * usb_get_urb(struct urb * urb);

ARGUMENTS
       urb
	   pointer to the urb to modify, may be NULL

DESCRIPTION
       This must be called whenever a urb is transferred from a device driver to a host controller driver. This allows proper reference counting
       to happen for urbs.

RETURN
       A pointer to the urb with the incremented reference counter.

COPYRIGHT
Kernel Hackers Manual 3.10					     June 2014							    USB_GET_URB(9)