diff --git a/drivers/staging/rtl8712/wifi.h b/drivers/staging/rtl8712/wifi.h
index 556367bfbe8a..0ed2f44ab4e9 100644
--- a/drivers/staging/rtl8712/wifi.h
+++ b/drivers/staging/rtl8712/wifi.h
@@ -170,8 +170,10 @@ enum WIFI_REG_DOMAIN {
 	*(__le16 *)(pbuf) &= (~cpu_to_le16(_FROM_DS_)); \
 })
 
-#define get_tofr_ds(pframe)	((GetToDs(pframe) << 1) | GetFrDs(pframe))
-
+static inline unsigned char get_tofr_ds(unsigned char *pframe)
+{
+	return ((GetToDs(pframe) << 1) | GetFrDs(pframe));
+}
 
 #define SetMFrag(pbuf) ({ \
 	*(__le16 *)(pbuf) |= cpu_to_le16(_MORE_FRAG_); \