swiotlb: do not export map_single function

[firefly-linux-kernel-4.4.55.git] / lib / swiotlb.c

diff --git a/lib/swiotlb.c b/lib/swiotlb.c
index 4abda074ea458947390b84c36f3eaad7095a2ceb..3c365ab6cf5f47711cf45ab65a593a6738713491 100644 (file)
--- a/lib/swiotlb.c
+++ b/lib/swiotlb.c
@@ -537,8 +537,9 @@ EXPORT_SYMBOL_GPL(swiotlb_tbl_map_single);
  * Allocates bounce buffer and returns its kernel virtual address.
  */
 
-phys_addr_t map_single(struct device *hwdev, phys_addr_t phys, size_t size,
-                      enum dma_data_direction dir)
+static phys_addr_t
+map_single(struct device *hwdev, phys_addr_t phys, size_t size,
+          enum dma_data_direction dir)
 {
        dma_addr_t start_dma_addr = phys_to_dma(hwdev, io_tlb_start);