mac80211: flush delayed work when entering suspend
authorMatt Chen <matt.chen@intel.com>
Sat, 21 Jan 2017 18:16:58 +0000 (02:16 +0800)
committerJohannes Berg <johannes.berg@intel.com>
Mon, 27 Feb 2017 13:00:26 +0000 (14:00 +0100)
commita9e9200d8661c1a0be8c39f93deb383dc940de35
tree67263b807e7dfbae1a4e9aa28721720a95a987cc
parent0328edc77d4f35014b35f32b46be0a7e16aae74f
mac80211: flush delayed work when entering suspend

The issue was found when entering suspend and resume.
It triggers a warning in:
mac80211/key.c: ieee80211_enable_keys()
...
WARN_ON_ONCE(sdata->crypto_tx_tailroom_needed_cnt ||
             sdata->crypto_tx_tailroom_pending_dec);
...

It points out sdata->crypto_tx_tailroom_pending_dec isn't cleaned up successfully
in a delayed_work during suspend. Add a flush_delayed_work to fix it.

Cc: stable@vger.kernel.org
Signed-off-by: Matt Chen <matt.chen@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
net/mac80211/pm.c