diff --git a/drivers/staging/vt6655/mac.c b/drivers/staging/vt6655/mac.c
index 688f7c685c97..902034a28c6c 100644
--- a/drivers/staging/vt6655/mac.c
+++ b/drivers/staging/vt6655/mac.c
@@ -38,6 +38,14 @@
 
 #include "mac.h"
 
+void vt6655_mac_reg_bits_on(void __iomem *iobase, const u8 reg_offset, const u8 bit_mask)
+{
+	unsigned char reg_value;
+
+	reg_value = ioread8(iobase + reg_offset);
+	iowrite8(reg_value | bit_mask, iobase + reg_offset);
+}
+
 /*
  * Description:
  *      Test if all test bits off
diff --git a/drivers/staging/vt6655/mac.h b/drivers/staging/vt6655/mac.h
index 4d328b724559..031316d42dba 100644
--- a/drivers/staging/vt6655/mac.h
+++ b/drivers/staging/vt6655/mac.h
@@ -537,13 +537,6 @@
 
 /*---------------------  Export Macros ------------------------------*/
 
-#define vt6655_mac_reg_bits_on(iobase, reg_offset, bit_mask)		\
-do {									\
-	unsigned char reg_value;					\
-	reg_value = ioread8(iobase + reg_offset);			\
-	iowrite8(reg_value | (bit_mask), iobase + reg_offset);		\
-} while (0)
-
 #define vt6655_mac_word_reg_bits_on(iobase, reg_offset, bit_mask)	\
 do {									\
 	unsigned short reg_value;					\
@@ -666,6 +659,7 @@ do {									\
 #define MAKEWORD(lb, hb) \
 	((unsigned short)(((unsigned char)(lb)) | (((unsigned short)((unsigned char)(hb))) << 8)))
 
+void vt6655_mac_reg_bits_on(void __iomem *iobase, const u8 reg_offset, const u8 bit_mask);
 bool MACbIsRegBitsOff(struct vnt_private *priv, unsigned char byRegOfs,
 		      unsigned char byTestBits);