arm64: Make default dma_ops to be noncoherent

Currently arm64 dma_ops is by default made coherent which makes it
opposite in default policy from arm.

Make default dma_ops to be noncoherent (same as arm), as currently there
aren't any dma-capable drivers which assumes coherent ops

Signed-off-by: Ritesh Harjani <ritesh.harjani@gmail.com>
Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
(cherry picked from commit c7a4a7658d689f664050c45493d79adf053f226e)

Signed-off-by: Jon Medhurst <tixy@linaro.org>
Signed-off-by: Mark Brown <broonie@linaro.org>

diff --git a/arch/arm64/mm/dma-mapping.c b/arch/arm64/mm/dma-mapping.c
index a48f1da828f6dc733463b7f6f80f05d4b4a0d198..d3d9bf5884f84862a50d17f474d54454953db54d 100644 (file)
--- a/arch/arm64/mm/dma-mapping.c
+++ b/arch/arm64/mm/dma-mapping.c
@@ -254,7 +254,7 @@ static int __init swiotlb_late_init(void)
 {
        size_t swiotlb_size = min(SZ_64M, MAX_ORDER_NR_PAGES << PAGE_SHIFT);
 
-       dma_ops = &coherent_swiotlb_dma_ops;
+       dma_ops = &noncoherent_swiotlb_dma_ops;
 
        return swiotlb_late_init_with_default_size(swiotlb_size);
 }