diff options
| author | Johannes Berg <johannes@sipsolutions.net> | 2009-05-17 09:40:42 (GMT) |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2009-05-20 18:46:25 (GMT) |
| commit | 5bb644a0fd25a5e083ecbfaa92a211db99aa6ef7 (patch) | |
| tree | d2a6d5ff2323db0c475be15c63bb8fc55482a1e2 /net/mac80211/scan.c | |
| parent | cc32abd494c0a8f76f2638e3f3a76e01c68bc9ea (diff) | |
| download | linux-5bb644a0fd25a5e083ecbfaa92a211db99aa6ef7.tar.xz | |
mac80211: cancel/restart all timers across suspend/resume
We forgot to cancel all timers in mac80211 when suspending.
In particular we forgot to deal with some things that can
cause hardware reconfiguration -- while it is down.
While at it we go ahead and add a warning in ieee80211_sta_work()
if its run while the suspend->resume cycle is in effect. This
should not happen and if it does it would indicate there is
a bug lurking in either mac80211 or mac80211 drivers.
With this now wpa_supplicant doesn't blink when I go to suspend
and resume where as before there where issues with some timers
running during the suspend->resume cycle. This caused a lot of
incorrect assumptions and would at times bring back the device
in an incoherent, but mostly recoverable, state.
Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'net/mac80211/scan.c')
| -rw-r--r-- | net/mac80211/scan.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/net/mac80211/scan.c b/net/mac80211/scan.c index e65d74b..2a8d09a 100644 --- a/net/mac80211/scan.c +++ b/net/mac80211/scan.c @@ -631,3 +631,21 @@ int ieee80211_request_internal_scan(struct ieee80211_sub_if_data *sdata, mutex_unlock(&local->scan_mtx); return ret; } + +void ieee80211_scan_cancel(struct ieee80211_local *local) +{ + bool swscan; + + cancel_delayed_work_sync(&local->scan_work); + + /* + * Only call this function when a scan can't be + * queued -- mostly at suspend under RTNL. + */ + mutex_lock(&local->scan_mtx); + swscan = local->sw_scanning; + mutex_unlock(&local->scan_mtx); + + if (swscan) + ieee80211_scan_completed(&local->hw, true); +} |