diff --git a/drivers/staging/vt6655/device_main.c b/drivers/staging/vt6655/device_main.c
index 96945fb8d536..46bd88ee4668 100644
--- a/drivers/staging/vt6655/device_main.c
+++ b/drivers/staging/vt6655/device_main.c
@@ -244,6 +244,10 @@ static void vt6655_mac_dis_protect_md(void __iomem *iobase)
 	vt6655_mac_clear_bits(iobase, ENCFG_PROTECTMD);
 }
 
+static void vt6655_mac_en_barker_preamble_md(void __iomem *iobase)
+{
+	vt6655_mac_set_bits(iobase, ENCFG_BARKERPREAM);
+}
 /*
  * Initialisation of MAC & BBP registers
  */
@@ -1479,7 +1483,7 @@ static void vnt_bss_info_changed(struct ieee80211_hw *hw,
 
 	if (changed & BSS_CHANGED_ERP_PREAMBLE) {
 		if (conf->use_short_preamble) {
-			MACvEnableBarkerPreambleMd(priv->port_offset);
+			vt6655_mac_en_barker_preamble_md(priv->port_offset);
 			priv->preamble_type = true;
 		} else {
 			MACvDisableBarkerPreambleMd(priv->port_offset);
diff --git a/drivers/staging/vt6655/mac.h b/drivers/staging/vt6655/mac.h
index a7d6254fded0..3400ea15b673 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 MACvEnableBarkerPreambleMd(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 MACvDisableBarkerPreambleMd(iobase)				\
 do {									\
 	unsigned long dwOrgValue;					\