diff --git a/drivers/staging/rt2860/common/dfs.c b/drivers/staging/rt2860/common/dfs.c
index b09bba5cb206..87289627e9e7 100644
--- a/drivers/staging/rt2860/common/dfs.c
+++ b/drivers/staging/rt2860/common/dfs.c
@@ -314,15 +314,6 @@ ULONG RTMPReadRadarDuration(
 {
 	ULONG result = 0;
 
-#ifdef DFS_SUPPORT
-	UINT8 duration1 = 0, duration2 = 0, duration3 = 0;
-
-	BBP_IO_READ8_BY_REG_ID(pAd, BBP_R116, &duration1);
-	BBP_IO_READ8_BY_REG_ID(pAd, BBP_R117, &duration2);
-	BBP_IO_READ8_BY_REG_ID(pAd, BBP_R118, &duration3);
-	result = (duration1 << 16) + (duration2 << 8) + duration3;
-#endif // DFS_SUPPORT //
-
 	return result;
 
 }
diff --git a/drivers/staging/rt2860/sta/connect.c b/drivers/staging/rt2860/sta/connect.c
index e259a995a4b9..b7fb3a07c6ac 100644
--- a/drivers/staging/rt2860/sta/connect.c
+++ b/drivers/staging/rt2860/sta/connect.c
@@ -954,9 +954,6 @@ VOID CntlWaitStartProc(
 			{
 				pAd->CommonCfg.RadarDetect.RDMode = RD_SILENCE_MODE;
 				pAd->CommonCfg.RadarDetect.RDCount = 0;
-#ifdef DFS_SUPPORT
-				BbpRadarDetectionStart(pAd);
-#endif // DFS_SUPPORT //
 			}
 
 			DBGPRINT(RT_DEBUG_TRACE, ("CNTL - start a new IBSS = %02x:%02x:%02x:%02x:%02x:%02x ...\n",
@@ -1447,9 +1444,6 @@ VOID LinkUp(
 
 	if (pAd->CommonCfg.RadarDetect.RDMode == RD_SILENCE_MODE)
 	{
-#ifdef DFS_SUPPORT
-		RadarDetectionStop(pAd);
-#endif // DFS_SUPPORT //
 	}
 	pAd->CommonCfg.RadarDetect.RDMode = RD_NORMAL_MODE;