diff --git a/.travis.yml b/.travis.yml
index ed74586..354e384 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -30,7 +30,7 @@ matrix:
             - gcc-5
             - libelf-dev
             - libssl1.1
-      env: COMPILER=gcc-5 KVER=4.20-rc1
+      env: COMPILER=gcc-5 KVER=5.1-rc4
     - compiler: gcc
       addons:
         apt:
@@ -41,7 +41,7 @@ matrix:
             - gcc-6
             - libelf-dev
             - libssl1.1
-      env: COMPILER=gcc-6 KVER=4.19.1
+      env: COMPILER=gcc-6 KVER=5.1-rc4
     - compiler: gcc
       addons:
         apt:
@@ -52,23 +52,40 @@ matrix:
             - gcc-7
             - libelf-dev
             - libssl1.1
-      env: COMPILER=gcc-7 KVER=4.19.1
+      env: COMPILER=gcc-7 KVER=5.1-rc4
     - compiler: gcc
       addons:
         apt:
           sources:
             - ubuntu-toolchain-r-test
+            - sourceline: 'ppa:ondrej/nginx-mainline'
           packages:
             - gcc-5
-      env: COMPILER=gcc-5 KVER=4.4.97
+            - libelf-dev
+            - libssl1.1
+      env: COMPILER=gcc-5 KVER=4.19.34
     - compiler: gcc
       addons:
         apt:
           sources:
             - ubuntu-toolchain-r-test
+            - sourceline: 'ppa:ondrej/nginx-mainline'
           packages:
-            - gcc-4.9
-      env: COMPILER=gcc-4.9 KVER=3.16.50
+            - gcc-6
+            - libelf-dev
+            - libssl1.1
+      env: COMPILER=gcc-6 KVER=4.19.34
+    - compiler: gcc
+      addons:
+        apt:
+          sources:
+            - ubuntu-toolchain-r-test
+            - sourceline: 'ppa:ondrej/nginx-mainline'
+          packages:
+            - gcc-7
+            - libelf-dev
+            - libssl1.1
+      env: COMPILER=gcc-7 KVER=4.19.34
     - compiler: gcc
       addons:
         apt:
@@ -77,3 +94,4 @@ matrix:
           packages:
             - gcc-5
       env: COMPILER=gcc-5 KVER=3.14.79
+
diff --git a/os_dep/linux/ioctl_cfg80211.c b/os_dep/linux/ioctl_cfg80211.c
index 6eb8b9c..36c278a 100644
--- a/os_dep/linux/ioctl_cfg80211.c
+++ b/os_dep/linux/ioctl_cfg80211.c
@@ -1996,7 +1996,8 @@ static int cfg80211_rtw_get_station(struct wiphy *wiphy,
         sinfo->tx_failed = psta->sta_stats.tx_fail_cnt;
 
 	sinfo->filled |= STATION_INFO_BSS_PARAM;
-
+	
+#if defined (LINUX_VERSION_CODE) && (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 20, 0))
 	if (!psta->no_short_preamble_set)
 	sinfo->bss_param.flags |= STATION_INFO_BSS_PARAM_SHORT_PREAMBLE;
 
@@ -2012,7 +2013,7 @@ static int cfg80211_rtw_get_station(struct wiphy *wiphy,
 	sinfo->bss_param.dtim_period = pwrctl->dtim;
 
 	sinfo->bss_param.beacon_interval = get_beacon_interval(&cur_network->network);
-
+#endif
 	}
 
 	/* for Ad-Hoc/AP mode */
@@ -4662,7 +4663,15 @@ exit:
 	return ret;
 }
 
-static int	cfg80211_rtw_del_station(struct wiphy *wiphy, struct net_device *ndev, struct station_del_parameters *params)
+static int	cfg80211_rtw_del_station(struct wiphy *wiphy, struct net_device *ndev,
+#if (LINUX_VERSION_CODE < KERNEL_VERSION(3, 16, 0))
+	u8 *mac
+#elif (LINUX_VERSION_CODE < KERNEL_VERSION(3, 19, 0))
+	const u8 *mac
+#else
+	struct station_del_parameters *params
+#endif
+)
 {
 	int ret = 0;
 	_irqL irqL;
@@ -4676,7 +4685,11 @@ static int	cfg80211_rtw_del_station(struct wiphy *wiphy, struct net_device *ndev
 
 	RTW_INFO("+"FUNC_NDEV_FMT"\n", FUNC_NDEV_ARG(ndev));
 
+#if (LINUX_VERSION_CODE < KERNEL_VERSION(3, 19, 0))
+	target_mac = mac;
+#else
 	target_mac = params->mac;
+#endif
 
 	if (check_fwstate(pmlmepriv, (_FW_LINKED | WIFI_AP_STATE | WIFI_MESH_STATE)) != _TRUE) {
 		RTW_INFO("%s, fw_state != FW_LINKED|WIFI_AP_STATE|WIFI_MESH_STATE\n", __func__);
diff --git a/os_dep/linux/ioctl_cfg80211.h b/os_dep/linux/ioctl_cfg80211.h
index 8fe38f0..5dda257 100644
--- a/os_dep/linux/ioctl_cfg80211.h
+++ b/os_dep/linux/ioctl_cfg80211.h
@@ -336,7 +336,11 @@ void rtw_cfg80211_deinit_rfkill(struct wiphy *wiphy);
 
 #define rtw_cfg80211_connect_result(wdev, bssid, req_ie, req_ie_len, resp_ie, resp_ie_len, status, gfp) cfg80211_connect_result(wdev_to_ndev(wdev), bssid, req_ie, req_ie_len, resp_ie, resp_ie_len, status, gfp)
 
+#if (LINUX_VERSION_CODE < KERNEL_VERSION(4, 2, 0))
+#define rtw_cfg80211_disconnected(wdev, reason, ie, ie_len, locally_generated, gfp) cfg80211_disconnected(wdev_to_ndev(wdev), reason, ie, ie_len, gfp)
+#else
 #define rtw_cfg80211_disconnected(wdev, reason, ie, ie_len, locally_generated, gfp) cfg80211_disconnected(wdev_to_ndev(wdev), reason, ie, ie_len, locally_generated, gfp)
+#endif
 
 #ifdef CONFIG_RTW_80211R
 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 10, 0))
diff --git a/os_dep/linux/rtw_cfgvendor.c b/os_dep/linux/rtw_cfgvendor.c
index 2b677ff..5f1c234 100644
--- a/os_dep/linux/rtw_cfgvendor.c
+++ b/os_dep/linux/rtw_cfgvendor.c
@@ -45,9 +45,11 @@ struct sk_buff *dbg_rtw_cfg80211_vendor_event_alloc(struct wiphy *wiphy, struct
 {
 	struct sk_buff *skb;
 	unsigned int truesize = 0;
-
+#if (LINUX_VERSION_CODE < KERNEL_VERSION(4, 1, 0))
+	skb = cfg80211_vendor_event_alloc(wiphy, len, event_id, gfp);
+#else
 	skb = cfg80211_vendor_event_alloc(wiphy, wdev, len, event_id, gfp);
-
+#endif
 	if (skb)
 		truesize = skb->truesize;
 
@@ -140,9 +142,11 @@ struct sk_buff *rtw_cfg80211_vendor_event_alloc(
 	struct wiphy *wiphy, struct wireless_dev *wdev, int len, int event_id, gfp_t gfp)
 {
 	struct sk_buff *skb;
-
+#if (LINUX_VERSION_CODE < KERNEL_VERSION(4, 1, 0))
+	skb = cfg80211_vendor_event_alloc(wiphy, len, event_id, gfp);
+#else
 	skb = cfg80211_vendor_event_alloc(wiphy, wdev, len, event_id, gfp);
-
+#endif
 	return skb;
 }