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UPSTREAM: 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>
(cherry picked from commit c60bf3eb888a362100aa1bdbea351dab681e262a)
Signed-off-by: John Stultz <john.stultz@linaro.org>
Change-Id: Ib28a7baf7f2fd40603b5e89d256fd8a476fc89a8
This commit is contained in:
Robin Murphy 2019-07-03 14:47:31 +01:00 • committed by John Stultz
commit 8ae7041d78
1 changed files with 1 additions and 1 deletions
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drivers/of/address.c
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@ -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;