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31 lines
1.0 KiB
Diff
31 lines
1.0 KiB
Diff
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From e4a649779ff6857240fe691cdf147a3b4896e71b Mon Sep 17 00:00:00 2001
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From: Robin Murphy <robin.murphy@arm.com>
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Date: Wed, 3 Jul 2019 14:47:31 +0100
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Subject: [PATCH] of: address: Follow DMA parent for "dma-coherent"
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commit c60bf3eb888a362100aa1bdbea351dab681e262a upstream.
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Much like for address translation, when checking for DMA coherence we
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should be sure to walk up the DMA hierarchy, rather than the MMIO one,
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now that we can accommodate them being different.
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Signed-off-by: Robin Murphy <robin.murphy@arm.com>
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Tested-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
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Reviewed-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
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Signed-off-by: Rob Herring <robh@kernel.org>
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---
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drivers/of/address.c | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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--- a/drivers/of/address.c
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+++ b/drivers/of/address.c
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@@ -1023,7 +1023,7 @@ bool of_dma_is_coherent(struct device_no
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of_node_put(node);
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return true;
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}
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- node = of_get_next_parent(node);
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+ node = of_get_next_dma_parent(node);
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}
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of_node_put(node);
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return false;
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