[PATCH 3.13 012/163] Revert "mac80211: disable uAPSD if all ACs are under ACM"

Kamal Mostafa kamal at canonical.com
Thu Oct 9 21:00:37 UTC 2014 -stable review patch.  If anyone has any objections, please let me know.


From: Johannes Berg <johannes.berg at intel.com>

commit bb512ad0732232f1d2693bb68f31a76bed8f22ae upstream.

This reverts commit 24aa11ab8ae03292d38ec0dbd9bc2ac49fe8a6dd.

That commit was wrong since it uses data that hasn't even been set
up yet, but might be a hold-over from a previous connection.

Additionally, it seems like a driver-specific workaround that
shouldn't have been in mac80211 to start with.

Fixes: 24aa11ab8ae0 ("mac80211: disable uAPSD if all ACs are under ACM")
Reviewed-by: Luciano Coelho <luciano.coelho at intel.com>
Signed-off-by: Johannes Berg <johannes.berg at intel.com>
Signed-off-by: Kamal Mostafa <kamal at canonical.com>
 net/mac80211/mlme.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
index fcdd5de..6c126fc 100644
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -4219,8 +4219,7 @@ int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
 	if (bss->wmm_used && bss->uapsd_supported &&
-	    (sdata->local->hw.flags & IEEE80211_HW_SUPPORTS_UAPSD) &&
-	    sdata->wmm_acm != 0xff) {
+	    (sdata->local->hw.flags & IEEE80211_HW_SUPPORTS_UAPSD)) {
 		assoc_data->uapsd = true;
 		ifmgd->flags |= IEEE80211_STA_UAPSD_ENABLED;
 	} else {

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