diff --git a/drivers/staging/vt6656/control.c b/drivers/staging/vt6656/control.c
index 14346a6b928e..b6e31f3cf962 100644
--- a/drivers/staging/vt6656/control.c
+++ b/drivers/staging/vt6656/control.c
@@ -50,17 +50,3 @@ void ControlvReadByte(struct vnt_private *pDevice, u8 reg, u8 reg_off,
 			reg_off, reg, sizeof(u8), data);
 	return;
 }
-
-void ControlvMaskByte(struct vnt_private *pDevice, u8 reg_type, u8 reg_off,
-			u8 reg_mask, u8 data)
-{
-	u8 reg_data[2];
-
-	reg_data[0] = data;
-	reg_data[1] = reg_mask;
-
-	vnt_control_out(pDevice, MESSAGE_TYPE_WRITE_MASK, reg_off,
-			reg_type, ARRAY_SIZE(reg_data), reg_data);
-
-	return;
-}
diff --git a/drivers/staging/vt6656/control.h b/drivers/staging/vt6656/control.h
index e4e252ecbc28..48f4836a5146 100644
--- a/drivers/staging/vt6656/control.h
+++ b/drivers/staging/vt6656/control.h
@@ -36,7 +36,4 @@
 void ControlvReadByte(struct vnt_private *pDevice, u8 reg, u8 reg_off,
 			u8 *data);
 
-void ControlvMaskByte(struct vnt_private *pDevice, u8 reg_type, u8 reg_off,
-			u8 reg_mask, u8 data);
-
 #endif /* __CONTROL_H__ */