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author | Johannes Berg <johannes.berg@intel.com> | 2011-11-09 12:14:16 +0100 |
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committer | John W. Linville <linville@tuxdriver.com> | 2011-11-09 14:35:56 -0500 |
commit | 0ecfe806f146e0cb10c2c5abbb3bb4e91959e41a (patch) | |
tree | e70bd8430b61545e91aacc298718634ac217491f /net/xfrm/xfrm_ipcomp.c | |
parent | d929bbc63069396e723a180cde9cb71adc9f76ac (diff) | |
download | blackbird-op-linux-0ecfe806f146e0cb10c2c5abbb3bb4e91959e41a.tar.gz blackbird-op-linux-0ecfe806f146e0cb10c2c5abbb3bb4e91959e41a.zip |
mac80211: fix race between connection monitor & suspend
When the connection monitor timer fires right before
suspend, the following will happen:
timer fires -> monitor_work gets queued
suspend calls ieee80211_sta_quiesce
ieee80211_sta_quiesce:
- deletes timer
- cancels monitor_work synchronously, running it
[note wrong order of these steps]
monitor_work runs, re-arming the timer
later, timer fires while system should be quiesced
This causes a warning:
WARNING: at net/mac80211/util.c:540 ieee80211_can_queue_work+0x35/0x40 [mac80211]()
but is otherwise harmless. I'm not completely sure
this is the scenario Thomas stumbled across, but it
is the only way I can right now see the warning in
a scenario like the one he reported.
Reported-by: Thomas Meyer <thomas@m3y3r.de>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'net/xfrm/xfrm_ipcomp.c')
0 files changed, 0 insertions, 0 deletions