Commit b85b00a9 authored Jul 03, 2019 by Robin Murphy Committed by John Stultz Feb 24, 2020

UPSTREAM: 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 <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>
(cherry picked from commit 862ab5578f754117742c8b8c8e5ddf98bdb190ba)
Signed-off-by: John Stultz <john.stultz@linaro.org>
Change-Id: I928766d6c3da03e21faefb4ed50cfb76e5d4fbf9

parent 344b512d

drivers/of/address.c

+10 −0

Original line number	Diff line number	Diff line
		@@ -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;