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of: provide inline helper for of_find_device_by_node

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The ipmmu-vmsa driver fails in compile-testing on non-OF platforms:

drivers/iommu/ipmmu-vmsa.o: In function `ipmmu_of_xlate':
ipmmu-vmsa.c:(.text+0x740): undefined reference to `of_find_device_by_node'

It would be reasonable to assume that this interface works but
returns failure on non-OF builds, like it does on machines that
have been booted in another way, so this adds another inline
function helper.

Fixes: 7b2d59611f ("iommu/ipmmu-vmsa: Replace local utlb code with fwspec ids")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Rob Herring <robh@kernel.org>
This commit is contained in:
Arnd Bergmann 2017-09-11 22:07:50 +02:00 committed by Rob Herring
parent 2bd6bf03f4
commit aa767cfb75
1 changed files with 7 additions and 0 deletions
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7
include/linux/of_platform.h
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@ -57,7 +57,14 @@ extern const struct of_device_id of_default_bus_match_table[];
extern struct platform_device *of_device_alloc(struct device_node *np,
const char *bus_id,
struct device *parent);
#ifdef CONFIG_OF
extern struct platform_device *of_find_device_by_node(struct device_node *np);
#else
static inline struct platform_device *of_find_device_by_node(struct device_node *np)
{
return NULL;
}
#endif
/* Platform devices and busses creation */
extern struct platform_device *of_platform_device_create(struct device_node *np,