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authorJohannes Berg <johannes.berg@intel.com>2012-12-05 09:49:14 +0100
committerJohannes Berg <johannes.berg@intel.com>2012-12-06 14:05:05 +0100
commit0b7dff4faed07f55be2a98dd0eafc02623174236 (patch)
tree632417e2b6302076b3ef5781a5da98506cbff097 /net
parent01331040e6442ad09181bfaacd8bb9687dce2389 (diff)
downloadop-kernel-dev-0b7dff4faed07f55be2a98dd0eafc02623174236.zip
op-kernel-dev-0b7dff4faed07f55be2a98dd0eafc02623174236.tar.gz
mac80211: cancel work instead of waiting for it to do nothing
If the sdata work is pending while the interface is stopped, we currently flush it. If it's not running this means waiting for it to run, which could take a while if the workqueue is backlogged. However, the work exits right away if it starts to run while the interface is already stopping. There's no point in waiting for that, so use cancel_work_sync() instead. Reported-by: Ben Greear <greearb@candelatech.com> Tested-by: Ben Greear <greearb@candelatech.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net')
-rw-r--r--net/mac80211/iface.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/net/mac80211/iface.c b/net/mac80211/iface.c
index 40c36d5..09a80b5 100644
--- a/net/mac80211/iface.c
+++ b/net/mac80211/iface.c
@@ -862,7 +862,7 @@ static void ieee80211_do_stop(struct ieee80211_sub_if_data *sdata,
rcu_assign_pointer(local->p2p_sdata, NULL);
/* fall through */
default:
- flush_work(&sdata->work);
+ cancel_work_sync(&sdata->work);
/*
* When we get here, the interface is marked down.
* Call rcu_barrier() to wait both for the RX path
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