dma-mapping: remove the mapping_error dma_map_ops method

No users left except for vmd which just forwards it.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Linus Torvalds <torvalds@linux-foundation.org>

2 files changed, 0 insertions, 11 deletions

diff --git a/drivers/pci/controller/vmd.c b/drivers/pci/controller/vmd.c
index e50b0b5815ff..98ce79eac128 100644
--- a/drivers/pci/controller/vmd.c
+++ b/drivers/pci/controller/vmd.c
@@ -394,11 +394,6 @@ static void vmd_sync_sg_for_device(struct device *dev, struct scatterlist *sg,
         vmd_dma_ops(dev)->sync_sg_for_device(to_vmd_dev(dev), sg, nents, dir);
 }
 
-static int vmd_mapping_error(struct device *dev, dma_addr_t addr)
-{
-        return vmd_dma_ops(dev)->mapping_error(to_vmd_dev(dev), addr);
-}
-
 static int vmd_dma_supported(struct device *dev, u64 mask)
 {
         return vmd_dma_ops(dev)->dma_supported(to_vmd_dev(dev), mask);
@@ -446,7 +441,6 @@ static void vmd_setup_dma_ops(struct vmd_dev *vmd)
         ASSIGN_VMD_DMA_OPS(source, dest, sync_single_for_device);
         ASSIGN_VMD_DMA_OPS(source, dest, sync_sg_for_cpu);
         ASSIGN_VMD_DMA_OPS(source, dest, sync_sg_for_device);
-        ASSIGN_VMD_DMA_OPS(source, dest, mapping_error);
         ASSIGN_VMD_DMA_OPS(source, dest, dma_supported);
         ASSIGN_VMD_DMA_OPS(source, dest, get_required_mask);
         add_dma_domain(domain);
diff --git a/include/linux/dma-mapping.h b/include/linux/dma-mapping.h
index f89d277cc8ed..f4ac26d5294a 100644
--- a/include/linux/dma-mapping.h
+++ b/include/linux/dma-mapping.h
@@ -128,7 +128,6 @@ struct dma_map_ops {
                                    enum dma_data_direction dir);
         void (*cache_sync)(struct device *dev, void *vaddr, size_t size,
                         enum dma_data_direction direction);
-        int (*mapping_error)(struct device *dev, dma_addr_t dma_addr);
         int (*dma_supported)(struct device *dev, u64 mask);
         u64 (*get_required_mask)(struct device *dev);
 };
@@ -580,12 +579,8 @@ static inline void dma_free_coherent(struct device *dev, size_t size,
 
 static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
 {
-        const struct dma_map_ops *ops = get_dma_ops(dev);
-
         debug_dma_mapping_error(dev, dma_addr);
 
-        if (ops->mapping_error)
-                return ops->mapping_error(dev, dma_addr);
         if (dma_addr == DMA_MAPPING_ERROR)
                 return 1;
         return 0;