linux-kernel - Re: [PATCH v3] of: fix build failure

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Date:	Mon, 7 Dec 2015 19:12:30 +0100
From:	Geert Uytterhoeven <geert@...ux-m68k.org>
To:	Sudip Mukherjee <sudipm.mukherjee@...il.com>
Cc:	Rob Herring <robh+dt@...nel.org>,
	Frank Rowand <frowand.list@...il.com>,
	Grant Likely <grant.likely@...aro.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>
Subject: Re: [PATCH v3] of: fix build failure

On Mon, Dec 7, 2015 at 5:30 PM, Sudip Mukherjee
<sudipm.mukherjee@...il.com> wrote:
>> > --- a/include/linux/of_address.h
>> > +++ b/include/linux/of_address.h
>> > @@ -112,8 +112,6 @@ static inline bool of_dma_is_coherent(struct device_node *np)
>> >  extern int of_address_to_resource(struct device_node *dev, int index,
>> >                                   struct resource *r);
>> >  void __iomem *of_iomap(struct device_node *node, int index);
>> > -void __iomem *of_io_request_and_map(struct device_node *device,
>> > -                                       int index, const char *name);
>>
>> Upon closer look, both of_address_to_resource() and of_iomap() are
>> provided by drivers/of/address.c, so they should also be protected by
>> #ifdef CONFIG_OF_ADDRESS instead of CONFIG_OF.
>> Then the whole #ifdef CONFIG_OF section becomes empty.
>>
>> >  #else
> <snip>
>> >
>> >  #if defined(CONFIG_OF_ADDRESS) && defined(CONFIG_PCI)
>> >  extern const __be32 *of_get_pci_address(struct device_node *dev, int bar_no,
>>
>> Hence can you please move all of them to the existing
>> #ifdef CONFIG_OF_ADDRESS section, and move the #include <linux/io.h>
>> to the top?
>
> oops, no. I think you have missed seeing few more places.
> of_address_to_resource() of_iomap() are both defined in
> arch/sparc/kernel/of_device_common.c
> So if it is moved under #ifdef CONFIG_OF_ADDRESS then we again
> get a build failure for duplicate definition of them.

Oops, you're right.

Sorry, I never noticed before sparc provides its own definitions.

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds
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