centos man page for parport_release

PARPORT_RELEASE(9)					       Parallel Port Devices						PARPORT_RELEASE(9)

NAME
       parport_release - give up access to a parallel port device

SYNOPSIS
       void parport_release(struct pardevice * dev);

ARGUMENTS
       dev
	   pointer to structure representing parallel port device

DESCRIPTION
       This function cannot fail, but it should not be called without the port claimed. Similarly, if the port is already claimed you should not
       try claiming it again.

COPYRIGHT
Kernel Hackers Manual 3.10					     June 2014							PARPORT_RELEASE(9)