diff --git a/include/linux/dma-mapping.h b/include/linux/dma-mapping.h
index 7bf3b99e6fbb..9aee5f345e29 100644
--- a/include/linux/dma-mapping.h
+++ b/include/linux/dma-mapping.h
@@ -650,8 +650,7 @@ static inline unsigned int dma_get_max_seg_size(struct device *dev)
 	return SZ_64K;
 }
 
-static inline unsigned int dma_set_max_seg_size(struct device *dev,
-						unsigned int size)
+static inline int dma_set_max_seg_size(struct device *dev, unsigned int size)
 {
 	if (dev->dma_parms) {
 		dev->dma_parms->max_segment_size = size;