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Commit 922659ea authored by Christoph Hellwig's avatar Christoph Hellwig
Browse files

swiotlb-xen: remove xen_swiotlb_dma_mmap and xen_swiotlb_dma_get_sgtable 



There is no need to wrap the common version, just wire them up directly.

Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
Reviewed-by: default avatarStefano Stabellini <sstabellini@kernel.org>
parent 7b7a5776

drivers/xen/swiotlb-xen.c

+2 −27
Original line number Diff line number Diff line
@@ -547,31 +547,6 @@ xen_swiotlb_dma_supported(struct device *hwdev, u64 mask) 
	return xen_virt_to_bus(xen_io_tlb_end - 1) <= mask;

}



/*

 * Create userspace mapping for the DMA-coherent memory.

 * This function should be called with the pages from the current domain only,

 * passing pages mapped from other domains would lead to memory corruption.

 */

static int

xen_swiotlb_dma_mmap(struct device *dev, struct vm_area_struct *vma,

		     void *cpu_addr, dma_addr_t dma_addr, size_t size,

		     unsigned long attrs)

{

	return dma_common_mmap(dev, vma, cpu_addr, dma_addr, size, attrs);

}



/*

 * This function should be called with the pages from the current domain only,

 * passing pages mapped from other domains would lead to memory corruption.

 */

static int

xen_swiotlb_get_sgtable(struct device *dev, struct sg_table *sgt,

			void *cpu_addr, dma_addr_t handle, size_t size,

			unsigned long attrs)

{

	return dma_common_get_sgtable(dev, sgt, cpu_addr, handle, size, attrs);

}



const struct dma_map_ops xen_swiotlb_dma_ops = {

	.alloc = xen_swiotlb_alloc_coherent,

	.free = xen_swiotlb_free_coherent,
@@ -584,6 +559,6 @@ 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,

	.mmap = xen_swiotlb_dma_mmap,

	.get_sgtable = xen_swiotlb_get_sgtable,

	.mmap = dma_common_mmap,

	.get_sgtable = dma_common_get_sgtable,

};