diff --git a/ipacm/Android.bp b/ipacm/Android.bp
index a237e7c..fbb69e3 100644
--- a/ipacm/Android.bp
+++ b/ipacm/Android.bp
@@ -57,7 +57,6 @@
         "libhardware",
         "android.hardware.tetheroffload.config@1.0",
         "android.hardware.tetheroffload.control@1.0",
-        "android.hardware.tetheroffload.control@1.1",
     ],
 }
 
diff --git a/ipacm/inc/IPACM_OffloadManager.h b/ipacm/inc/IPACM_OffloadManager.h
index 146fde8..8ac904f 100644
--- a/ipacm/inc/IPACM_OffloadManager.h
+++ b/ipacm/inc/IPACM_OffloadManager.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017-2021, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2017-2018, The Linux Foundation. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
@@ -83,10 +83,8 @@
 
     /* ------------------------- STATS/POLICY --------------------------- */
     virtual RET setQuota(const char * /* upstream */, uint64_t /* limit */);
-    virtual RET setQuotaWarning(const char * /* upstream */,
-	uint64_t /* quota limit */, uint64_t /* warning limit */);
     virtual RET getStats(const char * /* upstream */, bool /* reset */,
-	OffloadStatistics& /* ret */);
+		OffloadStatistics& /* ret */);
 
 	static IPACM_OffloadManager *pInstance;
 
diff --git a/ipacm/src/IPACM_Main.cpp b/ipacm/src/IPACM_Main.cpp
index 8166329..e29289d 100644
--- a/ipacm/src/IPACM_Main.cpp
+++ b/ipacm/src/IPACM_Main.cpp
@@ -1,5 +1,5 @@
 /*
-Copyright (c) 2013-2021, The Linux Foundation. All rights reserved.
+Copyright (c) 2013-2019, The Linux Foundation. All rights reserved.
 
 Redistribution and use in source and binary forms, with or without
 modification, are permitted provided that the following conditions are
@@ -783,18 +783,6 @@
 				OffloadMng->elrInstance->onLimitReached();
 			}
 			continue;
-#ifdef IPA_WARNING_LIMIT_EVENT_MAX
-		case IPA_WARNING_LIMIT_REACHED:
-			IPACMDBG_H("Received IPA_WARNING_LIMIT_REACHED\n");
-			OffloadMng = IPACM_OffloadManager::GetInstance();
-			if (OffloadMng->elrInstance == NULL) {
-				IPACMERR("OffloadMng->elrInstance is NULL, can't forward to framework!\n");
-			} else {
-				IPACMERR("calling OffloadMng->elrInstance->onWarningReached \n");
-				OffloadMng->elrInstance->onWarningReached();
-			}
-			continue;
-#endif
 		case IPA_SSR_BEFORE_SHUTDOWN:
 			IPACMDBG_H("Received IPA_SSR_BEFORE_SHUTDOWN\n");
 			IPACM_Wan::clearExtProp();
diff --git a/ipacm/src/IPACM_OffloadManager.cpp b/ipacm/src/IPACM_OffloadManager.cpp
index 2b8012d..708725b 100644
--- a/ipacm/src/IPACM_OffloadManager.cpp
+++ b/ipacm/src/IPACM_OffloadManager.cpp
@@ -1,5 +1,5 @@
 /*
-Copyright (c) 2017-2021, The Linux Foundation. All rights reserved.
+Copyright (c) 2017-2019, The Linux Foundation. All rights reserved.
 
 Redistribution and use in source and binary forms, with or without
 modification, are permitted provided that the following conditions are
@@ -651,63 +651,6 @@
 	return SUCCESS;
 }
 
-RET IPACM_OffloadManager::setQuotaWarning(const char * upstream_name /* upstream */,
-uint64_t quota_mb/* quota limit */, uint64_t warning_mb/* warning limit */)
-{
-#ifdef WAN_IOC_SET_DATA_QUOTA_WARNING
-	wan_ioctl_set_data_quota_warning ioctl_data;
-	int fd = -1, rc = 0, err_type = 0;
-
-	if ((fd = open(DEVICE_NAME, O_RDWR)) < 0)
-	{
-		IPACMERR("Failed opening %s.\n", DEVICE_NAME);
-		return FAIL_HARDWARE;
-	}
-
-	memset(&ioctl_data, 0, sizeof(ioctl_data));
-
-	if (quota_mb != 0)
-	{
-		ioctl_data.quota_mbytes = quota_mb;
-		ioctl_data.set_quota = true;
-	}
-
-	if (warning_mb != 0)
-	{
-		ioctl_data.warning_mbytes = warning_mb;
-		ioctl_data.set_warning = true;
-	}
-
-
-	if (strlcpy(ioctl_data.interface_name, upstream_name, IFNAMSIZ) >= IFNAMSIZ) {
-		IPACMERR("String truncation occurred on upstream");
-		close(fd);
-		return FAIL_INPUT_CHECK;
-	}
-
-	IPACMDBG_H("SET_DATA_QUOTA_WARNING: Dev: %s, Quota: %llu, Warning: %llu\n",
-		ioctl_data.interface_name, (long long)quota_mb,
-		(long long)warning_mb);
-
-	rc = ioctl(fd, WAN_IOC_SET_DATA_QUOTA_WARNING, &ioctl_data);
-	close(fd);
-	if(rc != 0)
-	{
-		err_type = errno;
-		IPACMERR("IOCTL WAN_IOC_SET_DATA_QUOTA_WARNING call failed: %s err_type: %d\n", strerror(err_type), err_type);
-		if (err_type == ENODEV) {
-			IPACMDBG_H("Invalid argument.\n");
-			return FAIL_UNSUPPORTED;
-		}
-		else {
-			return FAIL_TRY_AGAIN;
-		}
-	}
-#endif
-	return SUCCESS;
-}
-
-
 RET IPACM_OffloadManager::getStats(const char * upstream_name /* upstream */,
 		bool reset /* reset */, OffloadStatistics& offload_stats/* ret */)
 {