diff --git a/include/net/mac80211.h b/include/net/mac80211.h
index 7a27e00..398b6ca4 100644
--- a/include/net/mac80211.h
+++ b/include/net/mac80211.h
@@ -208,6 +208,8 @@
  * @BSS_CHANGED_TXPOWER: TX power setting changed for this interface
  * @BSS_CHANGED_P2P_PS: P2P powersave settings (CTWindow, opportunistic PS)
  *	changed (currently only in P2P client mode, GO mode will be later)
+ * @BSS_CHANGED_DTIM_PERIOD: the DTIM period value was changed (set when
+ *	it becomes valid, managed mode only)
  */
 enum ieee80211_bss_change {
 	BSS_CHANGED_ASSOC		= 1<<0,
@@ -230,6 +232,7 @@
 	BSS_CHANGED_PS			= 1<<17,
 	BSS_CHANGED_TXPOWER		= 1<<18,
 	BSS_CHANGED_P2P_PS		= 1<<19,
+	BSS_CHANGED_DTIM_PERIOD		= 1<<20,
 
 	/* when adding here, make sure to change ieee80211_reconfig */
 };
@@ -271,9 +274,8 @@
  *	if the hardware cannot handle this it must set the
  *	IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE hardware flag
  * @dtim_period: num of beacons before the next DTIM, for beaconing,
- *	valid in station mode only while @assoc is true and if also
- *	requested by %IEEE80211_HW_NEED_DTIM_PERIOD (cf. also hw conf
- *	@ps_dtim_period)
+ *	valid in station mode only if after the driver was notified
+ *	with the %BSS_CHANGED_DTIM_PERIOD flag, will be non-zero then.
  * @sync_tsf: last beacon's/probe response's TSF timestamp (could be old
  *	as it may have been received during scanning long ago)
  * @sync_device_ts: the device timestamp corresponding to the sync_tsf,
@@ -1328,9 +1330,9 @@
  *      When this flag is set, signaling beacon-loss will cause an immediate
  *      change to disassociated state.
  *
- * @IEEE80211_HW_NEED_DTIM_PERIOD:
- *	This device needs to know the DTIM period for the BSS before
- *	associating.
+ * @IEEE80211_HW_NEED_DTIM_BEFORE_ASSOC:
+ *	This device needs to get data from beacon before association (i.e.
+ *	dtim_period).
  *
  * @IEEE80211_HW_SUPPORTS_PER_STA_GTK: The device's crypto engine supports
  *	per-station GTKs as used by IBSS RSN or during fast transition. If
@@ -1375,7 +1377,7 @@
 	IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE	= 1<<4,
 	IEEE80211_HW_SIGNAL_UNSPEC			= 1<<5,
 	IEEE80211_HW_SIGNAL_DBM				= 1<<6,
-	IEEE80211_HW_NEED_DTIM_PERIOD			= 1<<7,
+	IEEE80211_HW_NEED_DTIM_BEFORE_ASSOC		= 1<<7,
 	IEEE80211_HW_SPECTRUM_MGMT			= 1<<8,
 	IEEE80211_HW_AMPDU_AGGREGATION			= 1<<9,
 	IEEE80211_HW_SUPPORTS_PS			= 1<<10,