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ia64: remove iommu_dma_supported

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The generic dma_direct_supported helper already used by intel-iommu on
x86 does a better job than the ia64 reimplementation.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Tony Luck <tony.luck@intel.com>
This commit is contained in:
Christoph Hellwig
2018-09-17 19:10:25 +02:00
committed by Tony Luck
parent 77308e27a0
commit beec903f71
2 changed files with 0 additions and 15 deletions
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13
arch/ia64/kernel/pci-dma.c
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@@ -51,18 +51,6 @@ iommu_dma_init(void)
return;
}
int iommu_dma_supported(struct device *dev, u64 mask)
{
/* Copied from i386. Doesn't make much sense, because it will
only work for pci_alloc_coherent.
The caller just has to use GFP_DMA in this case. */
if (mask < DMA_BIT_MASK(24))
return 0;
return 1;
}
EXPORT_SYMBOL(iommu_dma_supported);
void __init pci_iommu_alloc(void)
{
dma_ops = &intel_dma_ops;
@@ -71,7 +59,6 @@ void __init pci_iommu_alloc(void)
intel_dma_ops.sync_sg_for_cpu = machvec_dma_sync_sg;
intel_dma_ops.sync_single_for_device = machvec_dma_sync_single;
intel_dma_ops.sync_sg_for_device = machvec_dma_sync_sg;
intel_dma_ops.dma_supported = iommu_dma_supported;
/*
* The order of these functions is important for