intel-iommu: Use coherent DMA mask when requested

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>

diff --git a/drivers/pci/intel-iommu.c b/drivers/pci/intel-iommu.c
index fc30b0f9ce654675d5f1413c01a1b79701dbd77c..006a169d28d3ca7ebf1876c1508dd7eda7411230 100644 (file)
--- a/drivers/pci/intel-iommu.c
+++ b/drivers/pci/intel-iommu.c
@@ -2606,8 +2606,7 @@ static dma_addr_t __intel_map_single(struct device *hwdev, phys_addr_t paddr,
        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;