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    Subject[PATCH 04/28] x86: Add flush_write_buffers in nommu functions
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    This patch adds flush_write_buffers() in some functions of pci-nommu_64.c
    They are added anywhere i386 would also have it. This is not a problem
    for x86_64, since flush_rite_buffers() an nop for it.

    Signed-off-by: Glauber Costa <gcosta@redhat.com>
    ---
    arch/x86/kernel/pci-nommu_64.c | 2 ++
    1 files changed, 2 insertions(+), 0 deletions(-)

    diff --git a/arch/x86/kernel/pci-nommu_64.c b/arch/x86/kernel/pci-nommu_64.c
    index a4e8ccf..1da9cf9 100644
    --- a/arch/x86/kernel/pci-nommu_64.c
    +++ b/arch/x86/kernel/pci-nommu_64.c
    @@ -32,6 +32,7 @@ nommu_map_single(struct device *hwdev, phys_addr_t paddr, size_t size,
    dma_addr_t bus = paddr;
    if (!check_addr("map_single", hwdev, bus, size))
    return bad_dma_address;
    + flush_write_buffers();
    return bus;
    }

    @@ -64,6 +65,7 @@ static int nommu_map_sg(struct device *hwdev, struct scatterlist *sg,
    return 0;
    s->dma_length = s->length;
    }
    + flush_write_buffers();
    return nents;
    }

    --
    1.5.0.6


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