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: Christoph Hellwig <hch@lst.de>
Reviewed-by: Stefano Stabellini <sstabellini@kernel.org>

diff --git a/drivers/xen/swiotlb-xen.c b/drivers/xen/swiotlb-xen.c
index eee86cc7046b7983999c0b36f81d6206c8e3e199..b8808677ae1d78b383cc73cfc18e0ead7c17f493 100644 (file)
--- a/drivers/xen/swiotlb-xen.c
+++ b/drivers/xen/swiotlb-xen.c
@@ -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,
 };