Hi Sudip,
On Mon, Dec 7, 2015 at 1:20 PM, Sudip Mukherjee
<sudipm.mukherjee@xxxxxxxxx> wrote:
> We are having build failure with linux-next for sparc allmodconfig with
> the error messages:
>
> undefined reference to 'of_io_request_and_map'
>
> CONFIG_OF is defined for sparc so it is expected that we have a
> definition of of_io_request_and_map() but of/address.c is only compiled
> if it is !SPARC. In other words, CONFIG_OF_ADDRESS is not defined for
> sparc so we get the build failure.
>
> Signed-off-by: Sudip Mukherjee <sudip@xxxxxxxxxxxxxxx>
> ---
>
> v1: had a complicated set of #ifdefs
> v2: i messed up and resulted in build failure of some other arch where
> CONFIG_OF is not defined.
> v3: tested with allmodconfig of x86_64, defconfig of alpha and mips.
>
> include/linux/of_address.h | 13 +++++++++----
> 1 file changed, 9 insertions(+), 4 deletions(-)
>
> diff --git a/include/linux/of_address.h b/include/linux/of_address.h
> index 507daad..02b1265 100644
> --- 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
>
> #include <linux/io.h>
> @@ -128,13 +126,20 @@ static inline void __iomem *of_iomap(struct device_node *device, int index)
> {
> return NULL;
> }
> +#endif
> +
> +#ifdef CONFIG_OF_ADDRESS
> +void __iomem *of_io_request_and_map(struct device_node *device,
> + int index, const char *name);
> +#else
> +#include <linux/io.h>
>
> static inline void __iomem *of_io_request_and_map(struct device_node *device,
> - int index, const char *name)
> + int index, const char *name)
> {
> return IOMEM_ERR_PTR(-EINVAL);
> }
> -#endif
> +#endif /* CONFIG_OF_ADDRESS */
>
> #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?
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx
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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