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-rw-r--r--include/linux/swiotlb.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/include/linux/swiotlb.h b/include/linux/swiotlb.h
index 73b1f1cec42..59bafa69029 100644
--- a/include/linux/swiotlb.h
+++ b/include/linux/swiotlb.h
@@ -88,4 +88,10 @@ swiotlb_dma_mapping_error(struct device *hwdev, dma_addr_t dma_addr);
extern int
swiotlb_dma_supported(struct device *hwdev, u64 mask);
+#ifdef CONFIG_SWIOTLB
+extern void __init swiotlb_free(void);
+#else
+static inline void swiotlb_free(void) { }
+#endif
+
#endif /* __LINUX_SWIOTLB_H */