swiotlb: mark is_swiotlb_buffer static

Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Robin Murphy <robin.murphy@arm.com> Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
mariux64 · Oct 19, 2018 · b65125c · b65125c
1 parent 21bb9d6
commit b65125c
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Showing 2 changed files with 1 addition and 2 deletions.
diff --git a/include/linux/swiotlb.h b/include/linux/swiotlb.h
@@ -121,7 +121,6 @@ static inline unsigned int swiotlb_max_segment(void) { return 0; }
 #endif
 
 extern void swiotlb_print_info(void);
-extern int is_swiotlb_buffer(phys_addr_t paddr);
 extern void swiotlb_set_max_segment(unsigned int);
 
 extern const struct dma_map_ops swiotlb_dma_ops;

diff --git a/kernel/dma/swiotlb.c b/kernel/dma/swiotlb.c
@@ -429,7 +429,7 @@ void __init swiotlb_exit(void)
 	max_segment = 0;
 }
 
-int is_swiotlb_buffer(phys_addr_t paddr)
+static int is_swiotlb_buffer(phys_addr_t paddr)
 {
 	return paddr >= io_tlb_start && paddr < io_tlb_end;
 }