diff --git a/Makefile b/Makefile
index 00a9382..ca2e2af 100755
--- a/Makefile
+++ b/Makefile
@@ -25,6 +25,8 @@ CONFIG_RTL8821A = y
 CONFIG_RTL8814A = y
 ######################### Interface ###########################
 CONFIG_USB_HCI = y
+########################### Android ###########################
+CONFIG_SIGNAL_DISPLAY_DBM = y
 ########################## Features ###########################
 CONFIG_NET_NS = y
 CONFIG_MP_INCLUDED = y
diff --git a/core/rtw_io.c b/core/rtw_io.c
index 159894a..5751c07 100644
--- a/core/rtw_io.c
+++ b/core/rtw_io.c
@@ -47,10 +47,6 @@ jackson@realtek.com.tw
 #include <drv_types.h>
 #include <hal_data.h>
 
-#if defined(PLATFORM_LINUX) && defined (PLATFORM_WINDOWS)
-	#error "Shall be Linux or Windows, but not both!\n"
-#endif
-
 #if defined(CONFIG_SDIO_HCI) || defined(CONFIG_PLATFORM_RTL8197D)
 	#define rtw_le16_to_cpu(val)		val
 	#define rtw_le32_to_cpu(val)		val
diff --git a/core/rtw_mp.c b/core/rtw_mp.c
index 5cf9f25..c15ce94 100644
--- a/core/rtw_mp.c
+++ b/core/rtw_mp.c
@@ -164,41 +164,7 @@ static void _init_mp_priv_(struct mp_priv *pmp_priv)
 
 }
 
-#ifdef PLATFORM_WINDOWS
 #if 0
-void mp_wi_callback(
-	IN NDIS_WORK_ITEM	*pwk_item,
-	IN PVOID			cntx
-)
-{
-	_adapter *padapter = (_adapter *)cntx;
-	struct mp_priv *pmppriv = &padapter->mppriv;
-	struct mp_wi_cntx	*pmp_wi_cntx = &pmppriv->wi_cntx;
-
-	/*  Execute specified action. */
-	if (pmp_wi_cntx->curractfunc != NULL) {
-		LARGE_INTEGER	cur_time;
-		ULONGLONG start_time, end_time;
-		NdisGetCurrentSystemTime(&cur_time);	/*  driver version */
-		start_time = cur_time.QuadPart / 10; /*  The return value is in microsecond */
-
-		pmp_wi_cntx->curractfunc(padapter);
-
-		NdisGetCurrentSystemTime(&cur_time);	/*  driver version */
-		end_time = cur_time.QuadPart / 10; /*  The return value is in microsecond */
-
-	}
-
-	NdisAcquireSpinLock(&(pmp_wi_cntx->mp_wi_lock));
-	pmp_wi_cntx->bmp_wi_progress = _FALSE;
-	NdisReleaseSpinLock(&(pmp_wi_cntx->mp_wi_lock));
-
-	if (pmp_wi_cntx->bmpdrv_unload)
-		NdisSetEvent(&(pmp_wi_cntx->mp_wi_evt));
-
-}
-#endif
-
 static int init_mp_priv_by_os(struct mp_priv *pmp_priv)
 {
 	struct mp_wi_cntx *pmp_wi_cntx;
@@ -741,15 +707,6 @@ MPT_DeInitAdapter(
 #if	defined(CONFIG_RTL8723B)
 	phy_set_bb_reg(pAdapter, 0xA01, BIT0, 1); /* /suggestion  by jerry for MP Rx. */
 #endif
-#if 0 /* for Windows */
-	PlatformFreeWorkItem(&(pMptCtx->MptWorkItem));
-
-	while (pMptCtx->bMptWorkItemInProgress) {
-		if (NdisWaitEvent(&(pMptCtx->MptWorkItemEvent), 50))
-			break;
-	}
-	NdisFreeSpinLock(&(pMptCtx->MptWorkItemSpinLock));
-#endif
 }
 
 static u8 mpt_ProStartTest(PADAPTER padapter)
diff --git a/os_dep/linux/usb_intf.c b/os_dep/linux/usb_intf.c
index 82cdafb..0179ef5 100644
--- a/os_dep/linux/usb_intf.c
+++ b/os_dep/linux/usb_intf.c
@@ -23,10 +23,6 @@
 #error "CONFIG_USB_HCI shall be on!\n"
 #endif
 
-#if defined(PLATFORM_LINUX) && defined (PLATFORM_WINDOWS)
-#error "Shall be Linux or Windows, but not both!\n"
-#endif
-
 #ifdef CONFIG_80211N_HT
 extern int rtw_ht_enable;
 extern int rtw_bw_mode;