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authorJohn W. Linville <linville@tuxdriver.com>2013-04-10 09:31:39 -0400
committerJohn W. Linville <linville@tuxdriver.com>2013-04-10 09:31:39 -0400
commit6fe5468f452c0c40348ebd4e737758a842286ca8 (patch)
treebefe5ab33c457a9e695b65be72600f383266e611 /net/mac80211/offchannel.c
parentdeb09280cd72ceb8b0679490f076d0e9f30dd456 (diff)
parent69a2bac8984c4e6dba78b330ed183fd580c65e99 (diff)
downloadop-kernel-dev-6fe5468f452c0c40348ebd4e737758a842286ca8.zip
op-kernel-dev-6fe5468f452c0c40348ebd4e737758a842286ca8.tar.gz
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless
Conflicts: drivers/net/wireless/rt2x00/rt2x00pci.c
Diffstat (limited to 'net/mac80211/offchannel.c')
-rw-r--r--net/mac80211/offchannel.c23
1 files changed, 17 insertions, 6 deletions
diff --git a/net/mac80211/offchannel.c b/net/mac80211/offchannel.c
index b01eb73..cce7958 100644
--- a/net/mac80211/offchannel.c
+++ b/net/mac80211/offchannel.c
@@ -297,10 +297,13 @@ void ieee80211_start_next_roc(struct ieee80211_local *local)
}
}
-void ieee80211_roc_notify_destroy(struct ieee80211_roc_work *roc)
+void ieee80211_roc_notify_destroy(struct ieee80211_roc_work *roc, bool free)
{
struct ieee80211_roc_work *dep, *tmp;
+ if (WARN_ON(roc->to_be_freed))
+ return;
+
/* was never transmitted */
if (roc->frame) {
cfg80211_mgmt_tx_status(&roc->sdata->wdev,
@@ -316,9 +319,12 @@ void ieee80211_roc_notify_destroy(struct ieee80211_roc_work *roc)
GFP_KERNEL);
list_for_each_entry_safe(dep, tmp, &roc->dependents, list)
- ieee80211_roc_notify_destroy(dep);
+ ieee80211_roc_notify_destroy(dep, true);
- kfree(roc);
+ if (free)
+ kfree(roc);
+ else
+ roc->to_be_freed = true;
}
void ieee80211_sw_roc_work(struct work_struct *work)
@@ -331,6 +337,9 @@ void ieee80211_sw_roc_work(struct work_struct *work)
mutex_lock(&local->mtx);
+ if (roc->to_be_freed)
+ goto out_unlock;
+
if (roc->abort)
goto finish;
@@ -370,7 +379,7 @@ void ieee80211_sw_roc_work(struct work_struct *work)
finish:
list_del(&roc->list);
started = roc->started;
- ieee80211_roc_notify_destroy(roc);
+ ieee80211_roc_notify_destroy(roc, !roc->abort);
if (started) {
ieee80211_flush_queues(local, NULL);
@@ -410,7 +419,7 @@ static void ieee80211_hw_roc_done(struct work_struct *work)
list_del(&roc->list);
- ieee80211_roc_notify_destroy(roc);
+ ieee80211_roc_notify_destroy(roc, true);
/* if there's another roc, start it now */
ieee80211_start_next_roc(local);
@@ -460,12 +469,14 @@ void ieee80211_roc_purge(struct ieee80211_sub_if_data *sdata)
list_for_each_entry_safe(roc, tmp, &tmp_list, list) {
if (local->ops->remain_on_channel) {
list_del(&roc->list);
- ieee80211_roc_notify_destroy(roc);
+ ieee80211_roc_notify_destroy(roc, true);
} else {
ieee80211_queue_delayed_work(&local->hw, &roc->work, 0);
/* work will clean up etc */
flush_delayed_work(&roc->work);
+ WARN_ON(!roc->to_be_freed);
+ kfree(roc);
}
}
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