openrisc: remove the no-op unmap_page and unmap_sg DMA operations

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Stafford Horne <shorne@gmail.com>

diff --git a/arch/openrisc/kernel/dma.c b/arch/openrisc/kernel/dma.c
index 47601274abf75ddd8d48f66e227c91921627e3fb..7cadff93d179c2ba227702ef72c2237da79ff8a7 100644 (file)
--- a/arch/openrisc/kernel/dma.c
+++ b/arch/openrisc/kernel/dma.c
@@ -171,14 +171,6 @@ or1k_map_page(struct device *dev, struct page *page,
        return addr;
 }
 
-static void
-or1k_unmap_page(struct device *dev, dma_addr_t dma_handle,
-               size_t size, enum dma_data_direction dir,
-               unsigned long attrs)
-{
-       /* Nothing special to do here... */
-}
-
 static int
 or1k_map_sg(struct device *dev, struct scatterlist *sg,
            int nents, enum dma_data_direction dir,
@@ -195,19 +187,6 @@ or1k_map_sg(struct device *dev, struct scatterlist *sg,
        return nents;
 }
 
-static void
-or1k_unmap_sg(struct device *dev, struct scatterlist *sg,
-             int nents, enum dma_data_direction dir,
-             unsigned long attrs)
-{
-       struct scatterlist *s;
-       int i;
-
-       for_each_sg(sg, s, nents, i) {
-               or1k_unmap_page(dev, sg_dma_address(s), sg_dma_len(s), dir, 0);
-       }
-}
-
 static void
 or1k_sync_single_for_device(struct device *dev,
                            dma_addr_t dma_handle, size_t size,
@@ -226,9 +205,7 @@ const struct dma_map_ops or1k_dma_map_ops = {
        .alloc = or1k_dma_alloc,
        .free = or1k_dma_free,
        .map_page = or1k_map_page,
-       .unmap_page = or1k_unmap_page,
        .map_sg = or1k_map_sg,
-       .unmap_sg = or1k_unmap_sg,
        .sync_single_for_device = or1k_sync_single_for_device,
 };
 EXPORT_SYMBOL(or1k_dma_map_ops);