dma-mapping: mark dma_supported static

Now that the remaining users in drivers are gone, this function can be
marked static.

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

diff --git a/include/linux/dma-mapping.h b/include/linux/dma-mapping.h
index 25a30906289d987e9fc0936132bb526e3bf7a4d0..0ee20b764000cb705a238a3483689be5d4b468fd 100644 (file)
--- a/include/linux/dma-mapping.h
+++ b/include/linux/dma-mapping.h
@@ -139,7 +139,6 @@ int dma_mmap_attrs(struct device *dev, struct vm_area_struct *vma,
                void *cpu_addr, dma_addr_t dma_addr, size_t size,
                unsigned long attrs);
 bool dma_can_mmap(struct device *dev);
-int dma_supported(struct device *dev, u64 mask);
 bool dma_pci_p2pdma_supported(struct device *dev);
 int dma_set_mask(struct device *dev, u64 mask);
 int dma_set_coherent_mask(struct device *dev, u64 mask);
@@ -248,10 +247,6 @@ static inline bool dma_can_mmap(struct device *dev)
 {
        return false;
 }
-static inline int dma_supported(struct device *dev, u64 mask)
-{
-       return 0;
-}
 static inline bool dma_pci_p2pdma_supported(struct device *dev)
 {
        return false;

diff --git a/kernel/dma/mapping.c b/kernel/dma/mapping.c
index 49cbf3e33de71cb8fbff2d67fc4b23e1e7b4c4f5..27f272381cf27e88888e489a63048712636882f5 100644 (file)
--- a/kernel/dma/mapping.c
+++ b/kernel/dma/mapping.c
@@ -707,7 +707,7 @@ int dma_mmap_noncontiguous(struct device *dev, struct vm_area_struct *vma,
 }
 EXPORT_SYMBOL_GPL(dma_mmap_noncontiguous);
 
-int dma_supported(struct device *dev, u64 mask)
+static int dma_supported(struct device *dev, u64 mask)
 {
        const struct dma_map_ops *ops = get_dma_ops(dev);
 
@@ -721,7 +721,6 @@ int dma_supported(struct device *dev, u64 mask)
                return 1;
        return ops->dma_supported(dev, mask);
 }
-EXPORT_SYMBOL(dma_supported);
 
 bool dma_pci_p2pdma_supported(struct device *dev)
 {