diff --git a/drivers/staging/vt6655/device_main.c b/drivers/staging/vt6655/device_main.c
index 46bd88ee4668..8e2a976aaaad 100644
--- a/drivers/staging/vt6655/device_main.c
+++ b/drivers/staging/vt6655/device_main.c
@@ -248,6 +248,12 @@ static void vt6655_mac_en_barker_preamble_md(void __iomem *iobase)
 {
 	vt6655_mac_set_bits(iobase, ENCFG_BARKERPREAM);
 }
+
+static void vt6655_mac_dis_barker_preamble_md(void __iomem *iobase)
+{
+	vt6655_mac_clear_bits(iobase, ENCFG_BARKERPREAM);
+}
+
 /*
  * Initialisation of MAC & BBP registers
  */
@@ -1486,7 +1492,7 @@ static void vnt_bss_info_changed(struct ieee80211_hw *hw,
 			vt6655_mac_en_barker_preamble_md(priv->port_offset);
 			priv->preamble_type = true;
 		} else {
-			MACvDisableBarkerPreambleMd(priv->port_offset);
+			vt6655_mac_dis_barker_preamble_md(priv->port_offset);
 			priv->preamble_type = false;
 		}
 	}
diff --git a/drivers/staging/vt6655/mac.h b/drivers/staging/vt6655/mac.h
index 3400ea15b673..a75cd318ee25 100644
--- a/drivers/staging/vt6655/mac.h
+++ b/drivers/staging/vt6655/mac.h
@@ -543,14 +543,6 @@
 #define MACvSelectPage1(iobase)				\
 	iowrite8(1, iobase + MAC_REG_PAGE1SEL)
 
-#define MACvDisableBarkerPreambleMd(iobase)				\
-do {									\
-	unsigned long dwOrgValue;					\
-	dwOrgValue = ioread32(iobase + MAC_REG_ENCFG);			\
-	dwOrgValue = dwOrgValue & ~ENCFG_BARKERPREAM;			\
-	iowrite32((u32)dwOrgValue, iobase + MAC_REG_ENCFG);		\
-} while (0)
-
 #define MACvSetBBType(iobase, byTyp)					\
 do {									\
 	unsigned long dwOrgValue;					\