mac80211: uAPSD - fix IEEE80211_FCTL_MOREDATA bit setting

Set IEEE80211_FCTL_MOREDATA bit also in case we have buffered
frames (more than one) only for one AC.

Signed-off-by: Janusz Dziedzic <janusz.dziedzic@tieto.com>
Reviewed-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

diff --git a/net/mac80211/sta_info.c b/net/mac80211/sta_info.c
index ce962d2..8eaa746 100644 (file)
--- a/net/mac80211/sta_info.c
+++ b/net/mac80211/sta_info.c
@@ -1354,12 +1354,12 @@ ieee80211_sta_ps_deliver_response(struct sta_info *sta,
                         * Use MoreData flag to indicate whether there are
                         * more buffered frames for this STA
                         */
-                       if (!more_data)
-                               hdr->frame_control &=
-                                       cpu_to_le16(~IEEE80211_FCTL_MOREDATA);
-                       else
+                       if (more_data || !skb_queue_empty(&frames))
                                hdr->frame_control |=
                                        cpu_to_le16(IEEE80211_FCTL_MOREDATA);
+                       else
+                               hdr->frame_control &=
+                                       cpu_to_le16(~IEEE80211_FCTL_MOREDATA);
 
                        if (ieee80211_is_data_qos(hdr->frame_control) ||
                            ieee80211_is_qos_nullfunc(hdr->frame_control))