From: Maarten Bressers <mbres@gentoo.org>
To: greg@kroah.com
Cc: linux-kernel@vger.kernel.org
Subject: Re: [PATCH] Fix compiler warnings for 2.6.23-rc8 on x86_64
Message-Id: <20070929000447.ACC7A65737@smtp.gentoo.org>
Date: Sat, 29 Sep 2007 00:04:47 +0000 (UTC)
Sender: linux-kernel-owner@vger.kernel.org
Content-Length: 2095
Lines: 56

On Fri, 28 Sep 2007 15:49:26 -0700
Greg KH <greg@kroah.com> wrote:

> On Fri, Sep 28, 2007 at 08:56:30PM +0000, Maarten Bressers wrote:
> > This (trivial) patch fixes two compiler warnings for 2.6.23-rc8 on x86_64,
> > use of deprecated function pci_find_device() and a section mismatch.
> > Build log and .config file included.
> > 
> > Signed-off by: Maarten Bressers <mbres@gentoo.org>
> > 
> > 
> > diff --git a/drivers/pci/search.c b/drivers/pci/search.c
> > index c6e79d0..0eb7e9e 100644
> > --- a/drivers/pci/search.c
> > +++ b/drivers/pci/search.c
> > @@ -96,7 +96,7 @@ pci_find_slot(unsigned int bus, unsigned int devfn)
> >  {
> >  	struct pci_dev *dev = NULL;
> >  
> > -	while ((dev = pci_find_device(PCI_ANY_ID, PCI_ANY_ID, dev)) != NULL) {
> > +	while ((dev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, dev)) != NULL) {
> >  		if (dev->bus->number == bus && dev->devfn == devfn)
> >  			return dev;
> >  	}
> 
> This is not a trivial patch, it changes the behavior of the code and is
> buggy.
> 
> Please read the documentationfor pci_get_device() on how to use it
> properly.  It can not be used in pci_find_slot() as the reference
> counting will be all wrong.  You need to just work to get rid of
> pci_find_slot() and then remove the whole function to get rid of the
> warning :)
> 
> > -EXPORT_SYMBOL(pci_find_device);
> > -EXPORT_SYMBOL(pci_find_slot);
> 
> What about the modules that want to use these functions?  Are they all
> now gone?  If so, just drop the whole function.
> 
> thanks,
> 
> greg k-h

Greg, thank you for your reply. It seems I'm out of my league here, I 
just thought I could quickly fix two compiler warnings, obviously this 
is not the case. I've read the documentation, but I don't think I'll be 
able to fix this. Sorry for the noise.

Randy, please ignore the other patch I sent you, it's obviously wrong.

-
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