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xen-swiotlb: remove xen_swiotlb_set_dma_mask 

This just duplicates the generic implementation.

Signed-off-by: Christoph Hellwig <hch@lst.de>
hifive-unleashed-5.1
Christoph Hellwig 2017-05-22 11:52:17 +02:00
parent 64273a61b2
commit a88f540101
1 changed files with 0 additions and 12 deletions
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12
drivers/xen/swiotlb-xen.c
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@ -661,17 +661,6 @@ xen_swiotlb_dma_supported(struct device *hwdev, u64 mask)
return xen_virt_to_bus(xen_io_tlb_end - 1) <= mask;
}
static int
xen_swiotlb_set_dma_mask(struct device *dev, u64 dma_mask)
{
if (!dev->dma_mask || !xen_swiotlb_dma_supported(dev, dma_mask))
return -EIO;
*dev->dma_mask = dma_mask;
return 0;
}
/*
* Create userspace mapping for the DMA-coherent memory.
* This function should be called with the pages from the current domain only,
@ -734,7 +723,6 @@ const struct dma_map_ops xen_swiotlb_dma_ops = {
.map_page = xen_swiotlb_map_page,
.unmap_page = xen_swiotlb_unmap_page,
.dma_supported = xen_swiotlb_dma_supported,
.set_dma_mask = xen_swiotlb_set_dma_mask,
.mmap = xen_swiotlb_dma_mmap,
.get_sgtable = xen_swiotlb_get_sgtable,
.mapping_error = xen_swiotlb_mapping_error,