Introduce of_address_count() helper to count the IO resources
instead of open-coding it.
Signed-off-by: Yang Yingliang <yangyingliang@xxxxxxxxxx>
---
include/linux/of_address.h | 11 +++++++++++
1 file changed, 11 insertions(+)
diff --git a/include/linux/of_address.h b/include/linux/of_address.h
index 45598dbec269..265f26eeaf6b 100644
--- a/include/linux/of_address.h
+++ b/include/linux/of_address.h
@@ -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 */
--
2.25.1
