linux-kernel - Re: [PATCH] PCI: Move prototypes for EXPORT_SYMBOL functions to include/linux/pci.h

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Message-ID: <20070713062756.GG24317@kroah.com>
Date:	Thu, 12 Jul 2007 23:27:56 -0700
From:	Greg KH <greg@...ah.com>
To:	Kumar Gala <galak@...nel.crashing.org>
Cc:	linux-pci@...ey.karlin.mff.cuni.cz, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] PCI: Move prototypes for EXPORT_SYMBOL functions to
	include/linux/pci.h

On Fri, Jul 13, 2007 at 01:10:46AM -0500, Kumar Gala wrote:
> On Thu, 12 Jul 2007, Greg KH wrote:
> 
> > On Fri, Jul 13, 2007 at 12:55:39AM -0500, Kumar Gala wrote:
> > >
> > >  On Jul 13, 2007, at 12:33 AM, Greg KH wrote:
> > >
> > > > On Fri, Jul 13, 2007 at 12:16:29AM -0500, Kumar Gala wrote:
> > > >> pci_do_scan_bus() and pci_bus_find_capability() are marked EXPORT_SYMBOL
> > > >> and thus usable outside of the PCI drive core itself.  Make the prototypes
> > > >> for these functions accessible to everyone.
> > > >
> > > > Well, no, I'd like to only have the pci hotplug drivers use them if
> > > > possible.  So until we have proper namespaces on the exported symbols,
> > > > I'd really like to keep these as-is if possible.
> > > >
> > > > Or are you needing these symbols for some code outside of the
> > > > drivers/pci/ directory tree?
> > >
> > >  I need pci_bus_find_capability() in arch/powerpc pci code.
> > >
> > >  I'm using it as a way to tell if we are a PCIe PHB.
> >
> > Ok, care to export only that function then?
> 
> that's fine, will do.
> 
> I assume we want to kill the prototype pci_bus_alloc_resource() in
> drivers/pci/pci.h since its duplicated in include/linux/pci.h

Yes.

> Also, I wasn't sure 'extern int pci_bus_find_capability'.. or just 'int
> pci_bus_find_capability'?

Whatever matches the surrounding code, I don't have a preference but I
think others might.

thanks,

greg k-h
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