From: Dmitry Tarnyagin <dmitry.tarnyagin@xxxxxxxxxxxxxx>
Date: Wed, 5 Oct 2011 13:20:04 +0200
A new .release_buffered_frames callback was introduced recently.
Check for the callback presence was missing in the mac80211 code,
and PM state could get broken in some cases.
Signed-off-by: Dmitry Tarnyagin <dmitry.tarnyagin@xxxxxxxxxxxxxx>
---
net/mac80211/sta_info.c | 4 +++-
1 files changed, 3 insertions(+), 1 deletions(-)
diff --git a/net/mac80211/sta_info.c b/net/mac80211/sta_info.c
index 58b1c2b..ff30fe3 100644
--- a/net/mac80211/sta_info.c
+++ b/net/mac80211/sta_info.c
@@ -1262,7 +1262,9 @@ ieee80211_sta_ps_deliver_response(struct sta_info
*sta,
tids = ieee80211_tids_for_ac(ac);
if (!found) {
- driver_release_tids = sta->driver_buffered_tids & tids;
+ if (local->ops->release_buffered_frames)
+ driver_release_tids =
+ sta->driver_buffered_tids & tids;
if (driver_release_tids) {
found = true;
} else {
--
1.7.1
--
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