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Commit 8ae7041d authored by Robin Murphy's avatar Robin Murphy Committed by John Stultz
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UPSTREAM: of: address: Follow DMA parent for "dma-coherent" 



Much like for address translation, when checking for DMA coherence we
should be sure to walk up the DMA hierarchy, rather than the MMIO one,
now that we can accommodate them being different.

Signed-off-by: default avatarRobin Murphy <robin.murphy@arm.com>
Tested-by: default avatarNicolas Saenz Julienne <nsaenzjulienne@suse.de>
Reviewed-by: default avatarNicolas Saenz Julienne <nsaenzjulienne@suse.de>
Signed-off-by: default avatarRob Herring <robh@kernel.org>
(cherry picked from commit c60bf3eb888a362100aa1bdbea351dab681e262a)
Signed-off-by: default avatarJohn Stultz <john.stultz@linaro.org>
Change-Id: Ib28a7baf7f2fd40603b5e89d256fd8a476fc89a8
parent b85b00a9

drivers/of/address.c

+1 −1
Original line number Diff line number Diff line
@@ -1022,7 +1022,7 @@ bool of_dma_is_coherent(struct device_node *np) 
			of_node_put(node);

			return true;

		}

		node = of_get_next_parent(node);

		node = of_get_next_dma_parent(node);

	}

	of_node_put(node);

	return false;