[07/11] of: address: Follow DMA parent for "dma-coherent"

Message ID 20190927002455.13169-8-robh@kernel.org
State New
Headers show
Series
  • Untitled series #23654
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Commit Message

Rob Herring Sept. 27, 2019, 12:24 a.m.
From: Robin Murphy <robin.murphy@arm.com>


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>

Signed-off-by: Rob Herring <robh@kernel.org>

---
 drivers/of/address.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

-- 
2.20.1

Patch

diff --git a/drivers/of/address.c b/drivers/of/address.c
index e9188c82fdae..3fd34f7ad772 100644
--- a/drivers/of/address.c
+++ b/drivers/of/address.c
@@ -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;