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Date:	Mon, 7 Apr 2014 15:20:45 +0100
From:	Liviu Dudau <Liviu.Dudau@....com>
To:	Bjorn Helgaas <bhelgaas@...gle.com>
Cc:	linux-pci <linux-pci@...r.kernel.org>,
	Catalin Marinas <Catalin.Marinas@....com>,
	Will Deacon <Will.Deacon@....com>,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	linaro-kernel <linaro-kernel@...ts.linaro.org>,
	Arnd Bergmann <arnd@...db.de>,
	LKML <linux-kernel@...r.kernel.org>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	LAKML <linux-arm-kernel@...ts.infradead.org>,
	Tanmay Inamdar <tinamdar@....com>,
	Grant Likely <grant.likely@...retlab.ca>
Subject: Re: [PATCH v7 5/6] pci: Export find_pci_host_bridge() function.

On Sat, Apr 05, 2014 at 12:39:48AM +0100, Bjorn Helgaas wrote:
> On Fri, Mar 14, 2014 at 03:34:31PM +0000, Liviu Dudau wrote:
> > This is a useful function and we should make it visible outside the
> > generic PCI code. Export it as a GPL symbol.
> > 
> > Signed-off-by: Liviu Dudau <Liviu.Dudau@....com>
> > Tested-by: Tanmay Inamdar <tinamdar@....com>
> > ---
> >  drivers/pci/host-bridge.c | 3 ++-
> >  1 file changed, 2 insertions(+), 1 deletion(-)
> > 
> > diff --git a/drivers/pci/host-bridge.c b/drivers/pci/host-bridge.c
> > index 06ace62..8708b652 100644
> > --- a/drivers/pci/host-bridge.c
> > +++ b/drivers/pci/host-bridge.c
> > @@ -17,12 +17,13 @@ static struct pci_bus *find_pci_root_bus(struct pci_bus *bus)
> >  	return bus;
> >  }
> >  
> > -static struct pci_host_bridge *find_pci_host_bridge(struct pci_bus *bus)
> > +struct pci_host_bridge *find_pci_host_bridge(struct pci_bus *bus)
> >  {
> >  	struct pci_bus *root_bus = find_pci_root_bus(bus);
> >  
> >  	return to_pci_host_bridge(root_bus->bridge);
> >  }
> > +EXPORT_SYMBOL_GPL(find_pci_host_bridge);
> 
> Do you have a place where you actually need to use find_pci_host_bridge()?
> I'd rather not export it, even as _GPL, unless we have a user.

The code in arm64 series is using it to implement pci_domain_nr().

> 
> If we *do* export it, I'd like it to have a more conventional name, e.g.,
> something starting with "pci_".

Understood. pci_find_host_bridge() ?

Best regards,
Liviu

> 
> >  
> >  void pci_set_host_bridge_release(struct pci_host_bridge *bridge,
> >  				 void (*release_fn)(struct pci_host_bridge *),
> > -- 
> > 1.9.0
> > 
> --
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> 

-- 
====================
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| but they're not |
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