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of: address: Follow DMA parent for "dma-coherent"

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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: Robin Murphy <robin.murphy@arm.com>
Tested-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
Reviewed-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
Signed-off-by: Rob Herring <robh@kernel.org>
This commit is contained in:
Robin Murphy 2019-07-03 14:47:31 +01:00 committed by Rob Herring
parent 862ab5578f
commit c60bf3eb88
1 changed files with 1 additions and 1 deletions
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drivers/of/address.c
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@ -999,7 +999,7 @@ 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;