From 16988c742968d5ceb2e832a57bd277f51f0a59d7 Mon Sep 17 00:00:00 2001 From: Yang Yingliang Date: Sat, 8 Oct 2022 19:56:16 +0800 Subject: [PATCH] of/address: introduce of_address_count() helper Introduce of_address_count() helper to count the IO resources instead of open-coding it. Signed-off-by: Yang Yingliang Link: https://lore.kernel.org/r/20221008115617.3583890-2-yangyingliang@huawei.com Signed-off-by: Rob Herring --- 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 */