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of/address: introduce of_address_count() helper

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Introduce of_address_count() helper to count the IO resources
instead of open-coding it.

Signed-off-by: Yang Yingliang <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Rob Herring <[email protected]>
This commit is contained in:
Yang Yingliang authored and Rob Herring committed 2022-10-16 17:58:54 -05:00
1 parent 9abf2313ad
commit 16988c7429
1 file changed
+11
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include/linux/of_address.h
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@@ -154,4 +154,15 @@ static inline const __be32 *of_get_pci_address(struct device_node *dev, int bar_
return __of_get_address(dev, -1, bar_no, size, flags);
}
static inline int of_address_count(struct device_node *np)
{
struct resource res;
int count = 0;
while (of_address_to_resource(np, count, &res) == 0)
count++;
return count;
}
#endif /* __OF_ADDRESS_H */