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authorJouni Malinen <j@w1.fi>2013-09-30 12:36:05 +0300
committerJohannes Berg <johannes.berg@intel.com>2013-09-30 12:36:56 +0200
commit22c4ceed0184318ec5a6182c6d75d398452c2e39 (patch)
tree061bbe36e029fa9b6ee40ebd5b4f129bfbd92bfb /net/mac80211
parent0c5b93290b2f3c7a376567c03ae8d385b0e99851 (diff)
downloadlinux-22c4ceed0184318ec5a6182c6d75d398452c2e39.tar.bz2
mac80211: Run deferred scan if last roc_list item is not started
mac80211 scan processing could get stuck if roc work for pending, but not started when a scan request was deferred due to such roc item. Normally the deferred scan would be started from ieee80211_start_next_roc(), but ieee80211_sw_roc_work() calls that only if the finished ROC was started. Fix this by calling ieee80211_run_deferred_scan() in the case the last ROC was not actually started. This issue was hit relatively easily in P2P find operations where Listen state (remain-on-channel) and Search state (scan) are repeated in a loop. Signed-off-by: Jouni Malinen <j@w1.fi> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net/mac80211')
-rw-r--r--net/mac80211/offchannel.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/net/mac80211/offchannel.c b/net/mac80211/offchannel.c
index acd1f71adc03..0c2a29484c07 100644
--- a/net/mac80211/offchannel.c
+++ b/net/mac80211/offchannel.c
@@ -394,6 +394,8 @@ void ieee80211_sw_roc_work(struct work_struct *work)
if (started)
ieee80211_start_next_roc(local);
+ else if (list_empty(&local->roc_list))
+ ieee80211_run_deferred_scan(local);
}
out_unlock: