Re: dvb_tuner_ops is not a pointer

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Tuesday 09 May 2006 07:58, Patrick Boettcher wrote:
> On Mon, 8 May 2006, Andrew de Quincey wrote:
> > On Saturday 06 May 2006 19:44, Andrew de Quincey wrote:
> > > On Saturday 06 May 2006 18:55, Patrick Boettcher wrote:
> > > > Hi list,
> > > >
> > > > I'm about to write the mt2060-driver using dvb_tuner and
> > > > dvb_tuner_ops and I stumbled over something:
> > > >
> > > > dvb_tuner_ops inside dvb_frontend_ops is not a pointer but a real
> > > > field. That's why the static dvb_tuner_ops of a tuner have to be
> > > > copied directly into dvb_frontend_ops.tuner_ops .
> > > >
> > > > This mechanism is different to dvb_frontend_ops which is (and has
> > > > been for a long time) a pointer in dvb_frontend. That's why every
> > > > demod-driver is having a field of dvb_frontend_ops in its
> > > > private-state-struct and using the reference for filling the
> > > > pointer-field in dvb_frontend.
> > > >
> > > > Is there a specific reason for having the same "mechanism"
> > > > implemented in different ways I maybe missed during the discussion?
> > > > If not, would it be useful to change the dvb_frontend_ops* into
> > > > dvb_frontend_ops and be coherent with the new dvb_tuner_ops:
> > > >
> > > > - It would save at least two lines of code per demod-driver,
> > > > - would make it a little bit easier for newbies to understand how it
> > > > works and
> > > > - would avoid stupid mistakes because you would have to copy the
> > > >   dvb_frontend_ops always, currently you can assign the static
> > > > pointer directly, which is dangerous.
> > >
> > > yeah I see what you mean - the last reason is a _really_ good reason
> > > for doing this (the others are more cosmetic, but still valid).
> >
> > Patrick - are you working on this, or should I investigate it?
>
> I hate to put work on someone's list especially on your list, but I will
> probably not be able to do anything before the weekend... Sorry.
>
> OTOH it is not so urgent, is it? So it could wait.
>
> Yes I will do it.

cool - was just wanting to know.. and yeah non-urgent as you say :)

_______________________________________________

linux-dvb@xxxxxxxxxxx
http://www.linuxtv.org/cgi-bin/mailman/listinfo/linux-dvb

[Index of Archives]     [Linux Media]     [Video 4 Linux]     [Asterisk]     [Samba]     [Xorg]     [Xfree86]     [Linux USB]

  Powered by Linux