diff mbox series

[06/11] of/address: Introduce of_get_next_dma_parent() helper

Message ID 20190927002455.13169-7-robh@kernel.org
State Accepted
Commit 862ab5578f754117742c8b8c8e5ddf98bdb190ba
Headers show
Series of: dma-ranges fixes and improvements | expand

Commit Message

Rob Herring (Arm) Sept. 27, 2019, 12:24 a.m. UTC 
From: Robin Murphy <robin.murphy@arm.com>


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 <robin.murphy@arm.com>

Signed-off-by: Rob Herring <robh@kernel.org>

---
 drivers/of/address.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

-- 
2.20.1
diff mbox series

Patch

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;