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of/address: sparc: Declare of_address_to_resource() as an extern function for sparc again 

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 a850a75544, "of/address:
add empty static inlines for !CONFIG_OF". Contrary to that commit title, the
static inlines are added for !CONFIG_OF_ADDRESS, and CONFIG_OF_ADDRESS is never
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 there exists a sparc-specific implementation in
arch/sparc/arch/sparc/kernel/of_device_common.c

Solution suggested by: Sam Ravnborg <sam@ravnborg.org>

Signed-off-by: Andreas Larsson <andreas@gaisler.com>
Acked-by: Rob Herring <rob.herring@calxeda.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Andreas Larsson 2012-11-06 00:12:03 +00:00 committed by David S. Miller
parent 20424d85f8
commit 0bce04be44
2 changed files with 7 additions and 0 deletions
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5
arch/sparc/include/asm/prom.h
View File

@ -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 */

2
include/linux/of_address.h
View File

@ -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,