Re: [PATCH] PnP MODULE_DEVICE_TABLE Update - 2.5.46 (3/6)

From: Jaroslav Kysela (perex@suse.cz)
Date: Tue Nov 12 2002 - 07:46:43 EST


On Mon, 11 Nov 2002, Greg KH wrote:

> On Thu, Nov 07, 2002 at 12:29:52PM +0100, Jaroslav Kysela wrote:
> > On Wed, 6 Nov 2002, Greg KH wrote:
> >
> > > On Wed, Nov 06, 2002 at 09:02:00PM +0000, Adam Belay wrote:
> > > >
> > > > diff -ur --new-file a/include/linux/module.h b/include/linux/module.h
> > > > --- a/include/linux/module.h Wed Oct 30 17:45:58 2002
> > > > +++ b/include/linux/module.h Wed Oct 30 17:45:24 2002
> > > > @@ -239,6 +239,8 @@
> > > > * The following is a list of known device types (arg 1),
> > > > * and the C types which are to be passed as arg 2.
> > > > * pci - struct pci_device_id - List of PCI ids supported by this module
> > > > + * pnpc - struct pnpc_device_id - List of PnP card ids (PNPBIOS, ISA PnP) supported by this module
> > > > + * pnp - struct pnp_device_id - List of PnP ids (PNPBIOS, ISA PnP) supported by this module
> > >
> > > I must have missed this last time, but to refresh my memory, why do you
> > > need two different device types? What's the difference between a card
> > > id and a device id?
> >
> > The card id represents a group of logical devices (device ids). It's good
> > to know how are devices connected, especially for soundcards where are
> > several logical devices working together (codec, synth, midi uart).
> > Addressing these devices separately (as the OSS sound driver does for
> > example) causes a lot of confusion for users when more cards are in one
> > system.
>
> But I don't see any code using this functionality in the kernel right
> now (or in the patches just sent out.) Is it really needed if there is
> no users?

All ALSA modules will use it after this patch is merged.

                                                Jaroslav

-----
Jaroslav Kysela <perex@suse.cz>
Linux Kernel Sound Maintainer
ALSA Project, SuSE Labs

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