diff --git a/include/net/mac80211.h b/include/net/mac80211.h
index b4bef1152c05c52b87dc877e9d4e8b09050842f7..8e3668b44c2984aeb3531d14927dd2bf6b9f88a3 100644
--- a/include/net/mac80211.h
+++ b/include/net/mac80211.h
@@ -1666,6 +1666,8 @@ struct ieee80211_tx_control {
  * @sta: station table entry, %NULL for per-vif queue
  * @tid: the TID for this queue (unused for per-vif queue)
  * @ac: the AC for this queue
+ * @drv_priv: data area for driver use, will always be aligned to
+ *	sizeof(void *).
  *
  * The driver can obtain packets from this queue by calling
  * ieee80211_tx_dequeue().