The map_single() function is not defined as static, even though it
doesn't seem to be used anywhere else in the kernel. Make it static to
avoid namespace pollution since this is a rather generic symbol.
Signed-off-by: Alexandre Courbot <[email protected]>
---
Tried building both arm64 and x64-64 kernels with this patch. No
issue noticed.
lib/swiotlb.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/lib/swiotlb.c b/lib/swiotlb.c
index 341268841b31..9f85a7e22bc4 100644
--- 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);
--
2.4.1