suse man page for usb_free_urb

USB_FREE_URB(9) 						   USB Core APIs						   USB_FREE_URB(9)

NAME
       usb_free_urb - frees the memory used by a urb when all users of it are finished

SYNOPSIS
       void usb_free_urb(struct urb * urb);

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

DESCRIPTION
       Must be called when a user of a urb is finished with it. When the last user of the urb calls this function, the memory of the urb is freed.

NOTE
       The transfer buffer associated with the urb is not freed unless the URB_FREE_BUFFER transfer flag is set.

COPYRIGHT
Kernel Hackers Manual 2.6.					     July 2010							   USB_FREE_URB(9)