xen-swiotlb: remove xen_swiotlb_set_dma_mask

This just duplicates the generic implementation.

Signed-off-by: Christoph Hellwig <hch@lst.de>

diff --git a/drivers/xen/swiotlb-xen.c b/drivers/xen/swiotlb-xen.c
index c3a04b2d7532402d7ed5fc5e163b74a5a3e0c2be..82fc54f8eb77234253dae40572a817231bdd57b0 100644 (file)
--- a/drivers/xen/swiotlb-xen.c
+++ b/drivers/xen/swiotlb-xen.c
@@ -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,