diff --git a/include/net/mac80211.h b/include/net/mac80211.h
index 00a50a3..9bca2ab 100644
--- a/include/net/mac80211.h
+++ b/include/net/mac80211.h
@@ -865,6 +865,9 @@
  *
  * @IEEE80211_HW_SUPPORTS_DYNAMIC_PS:
  *	Hardware has support for dynamic PS.
+ *
+ * @IEEE80211_HW_MFP_CAPABLE:
+ *	Hardware supports management frame protection (MFP, IEEE 802.11w).
  */
 enum ieee80211_hw_flags {
 	IEEE80211_HW_RX_INCLUDES_FCS			= 1<<1,
@@ -880,6 +883,7 @@
 	IEEE80211_HW_SUPPORTS_PS			= 1<<11,
 	IEEE80211_HW_PS_NULLFUNC_STACK			= 1<<12,
 	IEEE80211_HW_SUPPORTS_DYNAMIC_PS		= 1<<13,
+	IEEE80211_HW_MFP_CAPABLE			= 1<<14,
 };
 
 /**
diff --git a/net/mac80211/wext.c b/net/mac80211/wext.c
index 2dd3874..70a29b6 100644
--- a/net/mac80211/wext.c
+++ b/net/mac80211/wext.c
@@ -976,6 +976,10 @@
 			ret = -EOPNOTSUPP;
 		break;
 	case IW_AUTH_MFP:
+		if (!(sdata->local->hw.flags & IEEE80211_HW_MFP_CAPABLE)) {
+			ret = -EOPNOTSUPP;
+			break;
+		}
 		if (sdata->vif.type == NL80211_IFTYPE_STATION ||
 		    sdata->vif.type == NL80211_IFTYPE_ADHOC)
 			sdata->u.sta.mfp = data->value;