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| author | FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> | 2009-01-28 13:53:17 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-01-29 14:39:29 +0100 |
| commit | dfb805e831cc5306b14eacd64e0b36d0d973ee0d (patch) | |
| tree | 2190228a1541cb99cccd444e0e24280d24b70f7d /arch/ia64/kernel/pci-dma.c | |
| parent | IA64: fix swiotlb alloc_coherent for non DMA_64BIT_MASK devices (diff) | |
| download | linux-dfb805e831cc5306b14eacd64e0b36d0d973ee0d.tar.xz linux-dfb805e831cc5306b14eacd64e0b36d0d973ee0d.zip | |
IA64: fix VT-d dma_mapping_error
dma_mapping_error is used to see if dma_map_single and dma_map_page
succeed. IA64 VT-d dma_mapping_error always says that dma_map_single
is successful even though it could fail. Note that X86 VT-d works
properly in this regard.
This patch fixes IA64 VT-d dma_mapping_error by adding VT-d's own
dma_mapping_error() that works for both X86_64 and IA64. VT-d uses
zero as an error dma address so VT-d's dma_mapping_error returns 1 if
a passed dma address is zero (as x86's VT-d dma_mapping_error does
now).
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/ia64/kernel/pci-dma.c')
| -rw-r--r-- | arch/ia64/kernel/pci-dma.c | 6 |
1 files changed, 0 insertions, 6 deletions
diff --git a/arch/ia64/kernel/pci-dma.c b/arch/ia64/kernel/pci-dma.c index a647f116a155..e4cb443bb988 100644 --- a/arch/ia64/kernel/pci-dma.c +++ b/arch/ia64/kernel/pci-dma.c @@ -99,11 +99,6 @@ int iommu_dma_supported(struct device *dev, u64 mask) } EXPORT_SYMBOL(iommu_dma_supported); -static int vtd_dma_mapping_error(struct device *dev, dma_addr_t dma_addr) -{ - return 0; -} - void __init pci_iommu_alloc(void) { dma_ops = &intel_dma_ops; @@ -113,7 +108,6 @@ void __init pci_iommu_alloc(void) dma_ops->sync_single_for_device = machvec_dma_sync_single; dma_ops->sync_sg_for_device = machvec_dma_sync_sg; dma_ops->dma_supported = iommu_dma_supported; - dma_ops->mapping_error = vtd_dma_mapping_error; /* * The order of these functions is important for |