On 11/05/2012 04:53 AM, Andreas Larsson wrote:
> This bug-fix makes sure that of_address_to_resource is defined extern for
> sparc
> so that the sparc-specific implementation of of_address_to_resource() is once
> again used when including include/linux/of_address.h in a sparc context. A
> number of drivers in mainline relies on this function working for sparc.
>
> The bug was introduced in a850a7554442f08d3e910c6eeb4ee216868dda1e,
> "of/address:
> add empty static inlines for !CONFIG_OF". Contrary to that commit title, the
> static inlines are added for !CONFIG_OF_ADRESS, and CONFIG_OF_ADRESS is never
s/ADRESS/ADDRESS/
> defined for sparc. This is good behavior for the other functions in
> include/linux/of_address.h, as the extern functions defined in
> drivers/of/address.c only gets linked when OF_ADDRESS is configured. However,
> for of_address_to_resource is that there exists a sparc-specific
> implementation
> in arch/sparc/arch/sparc/kernel/of_device_common.c
>
> Signed-off-by: Andreas Larsson <andr...@gaisler.com>
Otherwise,
Acked-by: Rob Herring <rob.herr...@calxeda.com>
> ---
> arch/sparc/include/asm/prom.h | 5 +++++
> include/linux/of_address.h | 2 ++
> 2 files changed, 7 insertions(+), 0 deletions(-)
>
> diff --git a/arch/sparc/include/asm/prom.h b/arch/sparc/include/asm/prom.h
> index c287651..f930031 100644
> --- a/arch/sparc/include/asm/prom.h
> +++ b/arch/sparc/include/asm/prom.h
> @@ -63,5 +63,10 @@ extern char *of_console_options;
> extern void irq_trans_init(struct device_node *dp);
> extern char *build_path_component(struct device_node *dp);
>
> +/* SPARC has a local implementation */
> +extern int of_address_to_resource(struct device_node *dev, int index,
> + struct resource *r);
> +#define of_address_to_resource of_address_to_resource
> +
> #endif /* __KERNEL__ */
> #endif /* _SPARC_PROM_H */
> diff --git a/include/linux/of_address.h b/include/linux/of_address.h
> index a1984dd..e20e3af 100644
> --- a/include/linux/of_address.h
> +++ b/include/linux/of_address.h
> @@ -28,11 +28,13 @@ static inline unsigned long
> pci_address_to_pio(phys_addr_t addr) { return -1; }
> #endif
>
> #else /* CONFIG_OF_ADDRESS */
> +#ifndef of_address_to_resource
> static inline int of_address_to_resource(struct device_node *dev, int index,
> struct resource *r)
> {
> return -EINVAL;
> }
> +#endif
> static inline struct device_node *of_find_matching_node_by_address(
> struct device_node *from,
> const struct of_device_id *matches,
>
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