linux-kernel - Re: [PATCH v2 1/4] pci: OF: Fix the conversion of IO ranges into IO resources.

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Message-ID: <20140227134555.GJ1692@e106497-lin.cambridge.arm.com>
Date:	Thu, 27 Feb 2014 13:45:55 +0000
From:	Liviu Dudau <Liviu.Dudau@....com>
To:	linux-pci <linux-pci@...r.kernel.org>,
	linaro-kernel <linaro-kernel@...ts.linaro.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2 1/4] pci: OF: Fix the conversion of IO ranges into IO
 resources.

On Thu, Feb 27, 2014 at 01:20:54PM +0000, Arnd Bergmann wrote:
> On Thursday 27 February 2014 13:06:39 Liviu Dudau wrote:
> > +       res->flags = range->flags;
> > +       if (res->flags & IORESOURCE_IO) {
> > +               unsigned long port;
> > +               port = pci_address_to_pio(range->pci_addr);
> > +               if (port == (unsigned long)-1) {
> > +                       res->start = (resource_size_t)OF_BAD_ADDR;
> > +                       res->end = (resource_size_t)OF_BAD_ADDR;
> > +                       return;
> > +               }
> > 
> 
> I think this conflicts with the way that pci_address_to_pio() is
> defined on powerpc, where it expects a CPU address as the input,
> not a PCI i/o address.

And you are right, maybe what I need is to fix weak version of the
function, as that one cannot cope with cpu addresses. But I think
the idea still stands.

Thanks for reviewing this version as well!

Liviu

> 
> 	Arnd
> 
> 

-- 
====================
| I would like to |
| fix the world,  |
| but they're not |
| giving me the   |
 \ source code!  /
  ---------------
    ¯\_(ツ)_/¯

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