Re: [PATCH 06/11] pps: serial clients support.

[Alan Cox]

> > void n_tty_init_ops(struct tty_ldisc_ops *ops)
> > {
> > 	*ops = tty_ldisc_N_TTY;
> > 	ops->owner = NULL:
> > 	ops->refcount = ops->flags = 0;
> > }
> > EXPORT_SYMBOL_GPL(n_tty_inherit_ops);
> 
> The problem is that I have to do some operations into ldisc's open and
> close methods (see linux/drivers/pps/clients/pps-ldisc.c).
> 
> By using your solution I inherit such methods but I cannot modify
> their behaviour in a manner suitable for register/deregister PPS
> support at runtime.

You can

	n_tty_init_ops(&my_ops);
	my_ops.num = whatever;
	old_open = my_ops.open;
	my_ops.open = pps_ntty_open;

etc

While not as pretty in C as C++ it works fine.
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