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    Subject[07/89] intel-iommu: Use coherent DMA mask when requested
    2.6.39-stable review patch.  If anyone has any objections, please let us know.

    ------------------

    From: Mike Travis <travis@sgi.com>

    commit c681d0ba1252954208220ad32248a3e8e2fc98e4 upstream.

    The __intel_map_single function is not honoring the passed in DMA mask.
    This results in not using the coherent DMA mask when called from
    intel_alloc_coherent().

    Signed-off-by: Mike Travis <travis@sgi.com>
    Acked-by: Chris Wright <chrisw@sous-sol.org>
    Reviewed-by: Mike Habeck <habeck@sgi.com>
    Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
    Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

    ---
    drivers/pci/intel-iommu.c | 3 +--
    1 file changed, 1 insertion(+), 2 deletions(-)

    --- a/drivers/pci/intel-iommu.c
    +++ b/drivers/pci/intel-iommu.c
    @@ -2606,8 +2606,7 @@ static dma_addr_t __intel_map_single(str
    iommu = domain_get_iommu(domain);
    size = aligned_nrpages(paddr, size);

    - iova = intel_alloc_iova(hwdev, domain, dma_to_mm_pfn(size),
    - pdev->dma_mask);
    + iova = intel_alloc_iova(hwdev, domain, dma_to_mm_pfn(size), dma_mask);
    if (!iova)
    goto error;




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