diff --git a/drivers/dma/fsl-edma-common.c b/drivers/dma/fsl-edma-common.c
index 6d6d8a4e8e389a9688f3f7a052330a9b90c4e534..264c448de40964d9ef2d763beab9d9c07a77ad74 100644
--- a/drivers/dma/fsl-edma-common.c
+++ b/drivers/dma/fsl-edma-common.c
@@ -90,7 +90,7 @@ static void mux_configure8(struct fsl_edma_chan *fsl_chan, void __iomem *addr,
 	iowrite8(val8, addr + off);
 }
 
-void mux_configure32(struct fsl_edma_chan *fsl_chan, void __iomem *addr,
+static void mux_configure32(struct fsl_edma_chan *fsl_chan, void __iomem *addr,
 		     u32 off, u32 slot, bool enable)
 {
 	u32 val;