--- a/main.c
+++ b/main.c
-@@ -414,11 +414,7 @@ static void mwl_set_ht_caps(struct mwl_p
+@@ -418,11 +418,7 @@ static void mwl_set_ht_caps(struct mwl_p
band->ht_cap.cap |= IEEE80211_HT_CAP_SGI_20;
band->ht_cap.cap |= IEEE80211_HT_CAP_SGI_40;
band->ht_cap.ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K;
band->ht_cap.ampdu_density = IEEE80211_HT_MPDU_DENSITY_4;
-@@ -520,21 +516,13 @@ static int mwl_wl_init(struct mwl_priv *
+@@ -524,29 +520,16 @@ static int mwl_wl_init(struct mwl_priv *
hw->queues = SYSADPT_TX_WMM_QUEUES;
/* Set rssi values to dBm */
ieee80211_hw_set(hw, AP_LINK_PS);
-#endif
- hw->vif_data_size = sizeof(struct mwl_vif);
- hw->sta_data_size = sizeof(struct mwl_sta);
+-#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 2, 0)
+- hw->flags |= IEEE80211_HW_SUPPORTS_PER_STA_GTK |
+- IEEE80211_HW_MFP_CAPABLE;
+-#else
+ ieee80211_hw_set(hw, SUPPORTS_PER_STA_GTK);
+ ieee80211_hw_set(hw, MFP_CAPABLE);
+-#endif
+
+ hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
+
+--- a/dev.h
++++ b/dev.h
+@@ -484,10 +484,6 @@ static inline struct mwl_sta *mwl_dev_ge
+ return (struct mwl_sta *)&sta->drv_priv;
+ }
+
+-#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 14, 0)
+-#define ether_addr_copy(dst, src) memcpy(dst, src, ETH_ALEN)
+-#endif
+-
+ /* Defined in mac80211.c. */
+ extern const struct ieee80211_ops mwl_mac80211_ops;
+
+--- a/mac80211.c
++++ b/mac80211.c
+@@ -572,19 +572,11 @@ static int mwl_mac80211_get_survey(struc
+ return 0;
+ }
+
+-#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 3, 0)
+-static int mwl_mac80211_ampdu_action(struct ieee80211_hw *hw,
+- struct ieee80211_vif *vif,
+- enum ieee80211_ampdu_mlme_action action,
+- struct ieee80211_sta *sta,
+- u16 tid, u16 *ssn, u8 buf_size)
+-#else
+ static int mwl_mac80211_ampdu_action(struct ieee80211_hw *hw,
+ struct ieee80211_vif *vif,
+ enum ieee80211_ampdu_mlme_action action,
+ struct ieee80211_sta *sta,
+ u16 tid, u16 *ssn, u8 buf_size, bool amsdu)
+-#endif
+ {
+ int rc = 0;
+ struct mwl_priv *priv = hw->priv;
+--- a/rx.c
++++ b/rx.c
+@@ -232,10 +232,8 @@ static inline void mwl_rx_prepare_status
+ status->flag |= RX_FLAG_VHT;
+ if (bw == RX_RATE_INFO_HT40)
+ status->flag |= RX_FLAG_40MHZ;
+-#if LINUX_VERSION_CODE > KERNEL_VERSION(3, 18, 0)
+ if (bw == RX_RATE_INFO_HT80)
+ status->vht_flag |= RX_VHT_FLAG_80MHZ;
+-#endif
+ if (gi == RX_RATE_INFO_SHORT_INTERVAL)
+ status->flag |= RX_FLAG_SHORT_GI;
+ status->vht_nss = (nss + 1);