3 files changed, 18 insertions, 2 deletions

diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h
index 31d823a3092..34b8f269976 100644
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -424,6 +424,17 @@ enum plink_actions {
 };
 
 /**
+ * enum station_parameters_apply_mask - station parameter values to apply
+ * @STATION_PARAM_APPLY_UAPSD: apply new uAPSD parameters (uapsd_queues, max_sp)
+ *
+ * Not all station parameters have in-band "no change" signalling,
+ * for those that don't these flags will are used.
+ */
+enum station_parameters_apply_mask {
+        STATION_PARAM_APPLY_UAPSD = BIT(0),
+};
+
+/**
  * struct station_parameters - station parameters
  *
  * Used to change and create a new station.
@@ -450,6 +461,7 @@ struct station_parameters {
         u8 *supported_rates;
         struct net_device *vlan;
         u32 sta_flags_mask, sta_flags_set;
+        u32 sta_modify_mask;
         int listen_interval;
         u16 aid;
         u8 supported_rates_len;
diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c
index 8fef3cddbc4..13061ebc93e 100644
--- a/net/mac80211/cfg.c
+++ b/net/mac80211/cfg.c
@@ -714,8 +714,10 @@ static void sta_apply_parameters(struct ieee80211_local *local,
         }
         spin_unlock_irqrestore(&sta->flaglock, flags);
 
-        sta->sta.uapsd_queues = params->uapsd_queues;
-        sta->sta.max_sp = params->max_sp;
+        if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) {
+                sta->sta.uapsd_queues = params->uapsd_queues;
+                sta->sta.max_sp = params->max_sp;
+        }
 
         /*
          * cfg80211 validates this (1-2007) and allows setting the AID
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index b85075761e2..3799623e7f4 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -2643,6 +2643,8 @@ static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
 
                 if (params.max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
                         return -EINVAL;
+
+                params.sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
         }
 
         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&