diff --git a/hal/usb_ops_linux.c b/hal/usb_ops_linux.c
index d04e5e3..955348e 100755
--- a/hal/usb_ops_linux.c
+++ b/hal/usb_ops_linux.c
@@ -59,10 +59,7 @@ static int usbctrl_vendorreq(struct intf_hdl *pintfhdl, u8 request, u16 value, u
 		goto exit;
 	}
 
-	#ifdef CONFIG_USB_VENDOR_REQ_MUTEX
 	_enter_critical_mutex(&pdvobjpriv->usb_vendor_req_mutex, NULL);
-	#endif
-
 
 	/*  Acquire IO memory for vendorreq */
 #ifdef CONFIG_USB_VENDOR_REQ_BUFFER_PREALLOC
@@ -159,9 +156,7 @@ static int usbctrl_vendorreq(struct intf_hdl *pintfhdl, u8 request, u16 value, u
 	#endif
 
 release_mutex:
-	#ifdef CONFIG_USB_VENDOR_REQ_MUTEX
 	_exit_critical_mutex(&pdvobjpriv->usb_vendor_req_mutex, NULL);
-	#endif
 exit:
 	return status;
 
diff --git a/include/autoconf.h b/include/autoconf.h
index fafcff9..8429a25 100755
--- a/include/autoconf.h
+++ b/include/autoconf.h
@@ -105,7 +105,6 @@
  */
 #define CONFIG_USB_VENDOR_REQ_BUFFER_PREALLOC
 
-#define CONFIG_USB_VENDOR_REQ_MUTEX
 #define CONFIG_VENDOR_REQ_RETRY
 
 /*
diff --git a/include/drv_conf.h b/include/drv_conf.h
index d8aa8c5..116970a 100755
--- a/include/drv_conf.h
+++ b/include/drv_conf.h
@@ -55,17 +55,4 @@
 	#endif
 #endif
 
-//About USB VENDOR REQ
-#if defined(CONFIG_USB_VENDOR_REQ_BUFFER_PREALLOC) && !defined(CONFIG_USB_VENDOR_REQ_MUTEX)
-	#warning "define CONFIG_USB_VENDOR_REQ_MUTEX for CONFIG_USB_VENDOR_REQ_BUFFER_PREALLOC automatically"
-	#define CONFIG_USB_VENDOR_REQ_MUTEX
-#endif
-#if defined(CONFIG_VENDOR_REQ_RETRY) &&  !defined(CONFIG_USB_VENDOR_REQ_MUTEX)
-	#warning "define CONFIG_USB_VENDOR_REQ_MUTEX for CONFIG_VENDOR_REQ_RETRY automatically"
-	#define CONFIG_USB_VENDOR_REQ_MUTEX
-#endif
-
-
-//#include <rtl871x_byteorder.h>
-
 #endif // __DRV_CONF_H__
diff --git a/include/drv_types.h b/include/drv_types.h
index a25d22d..d99cc43 100755
--- a/include/drv_types.h
+++ b/include/drv_types.h
@@ -274,9 +274,7 @@ struct dvobj_priv
 
 	_sema	usb_suspend_sema;
 
-#ifdef CONFIG_USB_VENDOR_REQ_MUTEX
 	_mutex  usb_vendor_req_mutex;
-#endif
 
 #ifdef CONFIG_USB_VENDOR_REQ_BUFFER_PREALLOC
 	u8 * usb_alloc_vendor_req_buf;
diff --git a/include/usb_ops_linux.h b/include/usb_ops_linux.h
index d3a5507..b2dd4f0 100755
--- a/include/usb_ops_linux.h
+++ b/include/usb_ops_linux.h
@@ -25,7 +25,7 @@
 #define RTW_USB_CONTROL_MSG_TIMEOUT_TEST	10//ms
 #define RTW_USB_CONTROL_MSG_TIMEOUT	500//ms
 
-#if defined(CONFIG_VENDOR_REQ_RETRY) && defined(CONFIG_USB_VENDOR_REQ_MUTEX)
+#if defined(CONFIG_VENDOR_REQ_RETRY)
 /* vendor req retry should be in the situation when each vendor req is atomically submitted from others */
 #define MAX_USBCTRL_VENDORREQ_TIMES	10
 #else
diff --git a/os_dep/usb_intf.c b/os_dep/usb_intf.c
index c8b7e16..2af16c9 100755
--- a/os_dep/usb_intf.c
+++ b/os_dep/usb_intf.c
@@ -226,10 +226,7 @@ static u8 rtw_init_intf_priv(struct dvobj_priv *dvobj)
 {
 	u8 rst = _SUCCESS;
 
-	#ifdef CONFIG_USB_VENDOR_REQ_MUTEX
 	_rtw_mutex_init(&dvobj->usb_vendor_req_mutex);
-	#endif
-
 
 	#ifdef CONFIG_USB_VENDOR_REQ_BUFFER_PREALLOC
 	dvobj->usb_alloc_vendor_req_buf = rtw_zmalloc(MAX_USB_IO_CTL_SIZE);
@@ -256,9 +253,7 @@ static u8 rtw_deinit_intf_priv(struct dvobj_priv *dvobj)
 		rtw_mfree(dvobj->usb_alloc_vendor_req_buf, MAX_USB_IO_CTL_SIZE);
 	#endif
 
-	#ifdef CONFIG_USB_VENDOR_REQ_MUTEX
 	_rtw_mutex_free(&dvobj->usb_vendor_req_mutex);
-	#endif
 
 	return rst;
 }