diff --git a/hal/hal_hci/hal_usb.c b/hal/hal_hci/hal_usb.c
index 543af0f..a082532 100644
--- a/hal/hal_hci/hal_usb.c
+++ b/hal/hal_hci/hal_usb.c
@@ -262,15 +262,13 @@ int usb_write_async(struct usb_device *udev, u32 addr, void *pdata, u16 len)
 {
 	u8 request;
 	u16 wvalue;
-	u16 index;
 	int ret;
 
 	request = REALTEK_USB_VENQT_CMD_REQ;
-	index = REALTEK_USB_VENQT_CMD_IDX;/* n/a */
 
 	wvalue = (u16)(addr & 0x0000ffff);
 
-	ret = _usbctrl_vendorreq_async_write(udev, request, wvalue, index, pdata, len, REALTEK_USB_VENQT_WRITE);
+	ret = _usbctrl_vendorreq_async_write(udev, request, wvalue, pdata, len, REALTEK_USB_VENQT_WRITE);
 
 	return ret;
 }
@@ -327,7 +325,7 @@ u8 usb_read8(struct intf_hdl *pintfhdl, u32 addr)
 		wvalue |= 0x8000;
 #endif
 
-	usbctrl_vendorreq(pintfhdl, wvalue, 0, &data, 1, REALTEK_USB_VENQT_READ);
+	usbctrl_vendorreq(pintfhdl, wvalue, &data, 1, REALTEK_USB_VENQT_READ);
 
 
 	return data;
@@ -344,7 +342,7 @@ u16 usb_read16(struct intf_hdl *pintfhdl, u32 addr)
 		wvalue |= 0x8000;
 #endif
 
-	usbctrl_vendorreq(pintfhdl, wvalue, 0, &data, 2, REALTEK_USB_VENQT_READ);
+	usbctrl_vendorreq(pintfhdl, wvalue, &data, 2, REALTEK_USB_VENQT_READ);
 
 
 	return data;
@@ -362,7 +360,7 @@ u32 usb_read32(struct intf_hdl *pintfhdl, u32 addr)
 		wvalue |= 0x8000;
 #endif
 
-	usbctrl_vendorreq(pintfhdl, wvalue, 0, &data, 4, REALTEK_USB_VENQT_READ);
+	usbctrl_vendorreq(pintfhdl, wvalue, &data, 4, REALTEK_USB_VENQT_READ);
 
 
 	return data;
@@ -378,7 +376,7 @@ int usb_write8(struct intf_hdl *pintfhdl, u32 addr, u8 val)
 		wvalue |= 0x8000;
 #endif
 
-	return usbctrl_vendorreq(pintfhdl, wvalue, 0, &val, 1, REALTEK_USB_VENQT_WRITE);
+	return usbctrl_vendorreq(pintfhdl, wvalue, &val, 1, REALTEK_USB_VENQT_WRITE);
 
 }
 
@@ -392,7 +390,7 @@ int usb_write16(struct intf_hdl *pintfhdl, u32 addr, u16 val)
 		wvalue |= 0x8000;
 #endif
 
-	return usbctrl_vendorreq(pintfhdl, wvalue, 0, &val, 2, REALTEK_USB_VENQT_WRITE);
+	return usbctrl_vendorreq(pintfhdl, wvalue, &val, 2, REALTEK_USB_VENQT_WRITE);
 
 }
 
@@ -406,7 +404,7 @@ int usb_write32(struct intf_hdl *pintfhdl, u32 addr, u32 val)
 		wvalue |= 0x8000;
 #endif
 
-	return usbctrl_vendorreq(pintfhdl, wvalue, 0, &val, 4, REALTEK_USB_VENQT_WRITE);
+	return usbctrl_vendorreq(pintfhdl, wvalue, &val, 4, REALTEK_USB_VENQT_WRITE);
 
 }
 
@@ -419,7 +417,7 @@ int usb_writeN(struct intf_hdl *pintfhdl, u32 addr, u32 length, u8 *pdata)
 		return -EINVAL;
 
 	memcpy(buf, pdata, length);
-	return usbctrl_vendorreq(pintfhdl, wvalue, 0, buf, (length & 0xffff), REALTEK_USB_VENQT_WRITE);
+	return usbctrl_vendorreq(pintfhdl, wvalue, buf, (length & 0xffff), REALTEK_USB_VENQT_WRITE);
 
 }
 
diff --git a/include/osdep_service_bsd.h b/include/osdep_service_bsd.h
index 9f0c1e2..7d5beb5 100644
--- a/include/osdep_service_bsd.h
+++ b/include/osdep_service_bsd.h
@@ -522,10 +522,6 @@ usb_put_dev(struct usb_device *dev)
 int rtw_usb_submit_urb(struct urb *urb, uint16_t mem_flags);
 int rtw_usb_unlink_urb(struct urb *urb);
 int rtw_usb_clear_halt(struct usb_device *dev, struct usb_host_endpoint *uhe);
-int rtw_usb_control_msg(struct usb_device *dev, struct usb_host_endpoint *uhe,
-    uint8_t request, uint8_t requesttype,
-    uint16_t value, uint16_t index, void *data,
-    uint16_t size, usb_timeout_t timeout);
 int rtw_usb_set_interface(struct usb_device *dev, uint8_t iface_no, uint8_t alt_index);
 int rtw_usb_setup_endpoint(struct usb_device *dev,
     struct usb_host_endpoint *uhe, usb_size_t bufsize);
diff --git a/include/usb_ops_linux.h b/include/usb_ops_linux.h
index 9c1aabc..f7bb5be 100644
--- a/include/usb_ops_linux.h
+++ b/include/usb_ops_linux.h
@@ -59,10 +59,10 @@ void usb_read_port_cancel(struct intf_hdl *pintfhdl);
 u32 usb_write_port(struct intf_hdl *pintfhdl, u32 addr, u32 cnt, u8 *wmem);
 void usb_write_port_cancel(struct intf_hdl *pintfhdl);
 
-int usbctrl_vendorreq(struct intf_hdl *pintfhdl, u16 value, u16 index, void *pdata, u16 len, u8 requesttype);
+int usbctrl_vendorreq(struct intf_hdl *pintfhdl, u16 value, void *pdata, u16 len, u8 requesttype);
 #ifdef CONFIG_USB_SUPPORT_ASYNC_VDN_REQ
 int _usbctrl_vendorreq_async_write(struct usb_device *udev, u8 request,
-		u16 value, u16 index, void *pdata, u16 len, u8 requesttype);
+		u16 value, void *pdata, u16 len, u8 requesttype);
 #endif /* CONFIG_USB_SUPPORT_ASYNC_VDN_REQ */
 
 u8 usb_read8(struct intf_hdl *pintfhdl, u32 addr);
diff --git a/os_dep/linux/usb_ops_linux.c b/os_dep/linux/usb_ops_linux.c
index 088da29..8b0bdd7 100644
--- a/os_dep/linux/usb_ops_linux.c
+++ b/os_dep/linux/usb_ops_linux.c
@@ -23,7 +23,7 @@ struct rtw_async_write_data {
 	struct usb_ctrlrequest dr;
 };
 
-int usbctrl_vendorreq(struct intf_hdl *pintfhdl, u16 value, u16 index, void *pdata, u16 len, u8 requesttype)
+int usbctrl_vendorreq(struct intf_hdl *pintfhdl, u16 value, void *pdata, u16 len, u8 requesttype)
 {
 	_adapter	*padapter = pintfhdl->padapter;
 	struct dvobj_priv  *pdvobjpriv = adapter_to_dvobj(padapter);
@@ -106,7 +106,7 @@ int usbctrl_vendorreq(struct intf_hdl *pintfhdl, u16 value, u16 index, void *pda
 			memcpy(pIo_buf, pdata, len);
 		}
 
-		status = usb_control_msg(udev, pipe, REALTEK_USB_VENQT_CMD_REQ, requesttype, value, index, pIo_buf, len, RTW_USB_CONTROL_MSG_TIMEOUT);
+		status = usb_control_msg(udev, pipe, REALTEK_USB_VENQT_CMD_REQ, requesttype, value, REALTEK_USB_VENQT_CMD_IDX, pIo_buf, len, RTW_USB_CONTROL_MSG_TIMEOUT);
 
 		if (status == len) {  /* Success this control transfer. */
 			rtw_reset_continual_io_error(pdvobjpriv);
@@ -166,13 +166,10 @@ int usbctrl_vendorreq(struct intf_hdl *pintfhdl, u16 value, u16 index, void *pda
 	if (current_reg_sec == REG_ON_SEC) {
 		unsigned int t_pipe = usb_sndctrlpipe(udev, 0);/* write_out */
 		u8 t_len = 1;
-		u8 t_req = 0x05;
 		u16 t_reg = 0;
-		u16 t_index = 0;
-
 		t_reg = 0x4e0;
 
-		status = usb_control_msg(udev, t_pipe, t_req, REALTEK_USB_VENQT_WRITE, t_reg, t_index, pIo_buf, t_len, RTW_USB_CONTROL_MSG_TIMEOUT);
+		status = usb_control_msg(udev, t_pipe, REALTEK_USB_VENQT_CMD_REQ, REALTEK_USB_VENQT_WRITE, t_reg, REALTEK_USB_VENQT_CMD_IDX, pIo_buf, t_len, RTW_USB_CONTROL_MSG_TIMEOUT);
 
 		if (status == t_len)
 			rtw_reset_continual_io_error(pdvobjpriv);
@@ -207,7 +204,7 @@ static void _usbctrl_vendorreq_async_callback(struct urb *urb, struct pt_regs *r
 }
 
 int _usbctrl_vendorreq_async_write(struct usb_device *udev, u8 request,
-	u16 value, u16 index, void *pdata, u16 len, u8 requesttype)
+	u16 value, void *pdata, u16 len, u8 requesttype)
 {
 	int rc;
 	unsigned int pipe;
@@ -240,7 +237,7 @@ int _usbctrl_vendorreq_async_write(struct usb_device *udev, u8 request,
 	dr->bRequestType = requesttype;
 	dr->bRequest = request;
 	dr->wValue = cpu_to_le16(value);
-	dr->wIndex = cpu_to_le16(index);
+	dr->wIndex = cpu_to_le16(REALTEK_USB_VENQT_CMD_IDX);
 	dr->wLength = cpu_to_le16(len);
 
 	memcpy(buf, pdata, len);