linux-next: missing merge fix patch for the merge of the xen-tip tree with the arm-soc tree

Stephen Rothwell sfr at
Mon Dec 22 18:26:05 PST 2014

Hi Linus,

I have been carrying this merge fix patch for some time that is now
needed in your tree:

From: Stephen Rothwell <sfr at>
Date: Mon, 8 Dec 2014 18:46:59 +1100
Subject: [PATCH] arm: introduce is_device_dma_coherent merge fix

The merge of the (linux-next) xen-tip tree got a conflict in
arch/arm/include/asm/dma-mapping.h between commits a3a60f81ee6f
("dma-mapping: replace set_arch_dma_coherent_ops with
arch_setup_dma_ops") and 4bb25789ed28 ("arm: dma-mapping: plumb our
iommu mapping ops into arch_setup_dma_ops") from the arm-soc tree and
commit 3d5391ac6f5e ("arm: introduce is_device_dma_coherent") from the
xen-tip tree.  It was fixed up, but also required this additional fix.

"Looks good to me"-by: Will Deacon <will.deacon at>
Signed-off-by: Stephen Rothwell <sfr at>
 arch/arm/mm/dma-mapping.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm/mm/dma-mapping.c b/arch/arm/mm/dma-mapping.c
index 09645f00bd17..43064cbe58f9 100644
--- a/arch/arm/mm/dma-mapping.c
+++ b/arch/arm/mm/dma-mapping.c
@@ -2058,6 +2058,7 @@ void arch_setup_dma_ops(struct device *dev, u64 dma_base, u64 size,
 		dma_ops = arm_get_dma_map_ops(coherent);
+	dev->archdata.dma_coherent = coherent;
 	set_dma_ops(dev, dma_ops);

Stephen Rothwell                    sfr at
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