From 862ab5578f754117742c8b8c8e5ddf98bdb190ba Mon Sep 17 00:00:00 2001 From: Robin Murphy Date: Wed, 3 Jul 2019 18:23:01 +0100 Subject: of/address: Introduce of_get_next_dma_parent() helper Add of_get_next_dma_parent() helper which is similar to __of_get_dma_parent(), but can be used in iterators and decrements the ref count on the prior parent. Signed-off-by: Robin Murphy Reviewed-by: Geert Uytterhoeven Tested-by: Nicolas Saenz Julienne Reviewed-by: Nicolas Saenz Julienne Signed-off-by: Rob Herring --- drivers/of/address.c | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'drivers/of/address.c') diff --git a/drivers/of/address.c b/drivers/of/address.c index 53d2656c2269..e9188c82fdae 100644 --- a/drivers/of/address.c +++ b/drivers/of/address.c @@ -695,6 +695,16 @@ static struct device_node *__of_get_dma_parent(const struct device_node *np) return of_node_get(args.np); } +static struct device_node *of_get_next_dma_parent(struct device_node *np) +{ + struct device_node *parent; + + parent = __of_get_dma_parent(np); + of_node_put(np); + + return parent; +} + u64 of_translate_dma_address(struct device_node *dev, const __be32 *in_addr) { struct device_node *host; -- cgit