1PARPORT_REGISTER_DRI(9) Parallel Port Devices PARPORT_REGISTER_DRI(9)
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6 parport_register_driver - register a parallel port device driver
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9 int parport_register_driver(struct parport_driver * drv);
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12 drv
13 structure describing the driver
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16 This can be called by a parallel port device driver in order to receive
17 notifications about ports being found in the system, as well as ports
18 no longer available.
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20 The drv structure is allocated by the caller and must not be
21 deallocated until after calling parport_unregister_driver.
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23 The driver's attach function may block. The port that attach is given
24 will be valid for the duration of the callback, but if the driver wants
25 to take a copy of the pointer it must call parport_get_port to do so.
26 Calling parport_register_device on that port will do this for you.
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28 The driver's detach function may block. The port that detach is given
29 will be valid for the duration of the callback, but if the driver wants
30 to take a copy of the pointer it must call parport_get_port to do so.
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32 Returns 0 on success. Currently it always succeeds.
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35Kernel Hackers Manual 2.6. November 2011 PARPORT_REGISTER_DRI(9)