1 files changed, 39 insertions, 0 deletions
diff --git a/target/linux/bcm27xx/patches-5.4/950-0429-of-address-Introduce-of_get_next_dma_parent-helper.patch b/target/linux/bcm27xx/patches-5.4/950-0429-of-address-Introduce-of_get_next_dma_parent-helper.patch
new file mode 100644
index 0000000000..1056cfc60d
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.4/950-0429-of-address-Introduce-of_get_next_dma_parent-helper.patch
@@ -0,0 +1,39 @@
+From 25ab98ceb9844642c994b5766de1033552d1aef2 Mon Sep 17 00:00:00 2001
+From: Robin Murphy <robin.murphy@arm.com>
+Date: Wed, 3 Jul 2019 18:23:01 +0100
+Subject: [PATCH] of/address: Introduce of_get_next_dma_parent() helper
+
+commit 862ab5578f754117742c8b8c8e5ddf98bdb190ba upstream.
+
+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>
+Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
+Tested-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
+Reviewed-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
+Signed-off-by: Rob Herring <robh@kernel.org>
+---
+ drivers/of/address.c | 10 ++++++++++
+ 1 file changed, 10 insertions(+)
+
+--- a/drivers/of/address.c
++++ b/drivers/of/address.c
+@@ -695,6 +695,16 @@ static struct device_node *__of_get_dma_
+ 	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;