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PARPORT_REGISTER_DRI(9)	     Parallel Port Devices     PARPORT_REGISTER_DRI(9)

NAME
       parport_register_driver - register a parallel port device driver

SYNOPSIS
       int parport_register_driver(struct parport_driver * drv);

ARGUMENTS
       drv
	   structure describing the driver

DESCRIPTION
       This can be called by a parallel port device driver in order to receive
       notifications about ports being found in the system, as well as ports
       no longer available.

       The drv structure is allocated by the caller and must not be
       deallocated until after calling parport_unregister_driver.

       The driver´s attach function may block. The port that attach is given
       will be valid for the duration of the callback, but if the driver wants
       to take a copy of the pointer it must call parport_get_port to do so.
       Calling parport_register_device on that port will do this for you.

       The driver´s detach function may block. The port that detach is given
       will be valid for the duration of the callback, but if the driver wants
       to take a copy of the pointer it must call parport_get_port to do so.

       Returns 0 on success. Currently it always succeeds.

COPYRIGHT
Kernel Hackers Manual 2.6.	 November 2013	       PARPORT_REGISTER_DRI(9)

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