diff options
| author | Johannes Berg <johannes.berg@intel.com> | 2011-07-02 00:02:01 +0200 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2011-07-05 15:26:56 -0400 |
| commit | 2b4562dfd6ad3579951de21168cb9d266ed3f1bd (patch) | |
| tree | 38b43f58644fc02ffeb0930009b979542362ea88 | |
| parent | 304e21bbeab0d208dc7e6142fb75db8a466d5217 (diff) | |
| download | lwn-2b4562dfd6ad3579951de21168cb9d266ed3f1bd.tar.gz lwn-2b4562dfd6ad3579951de21168cb9d266ed3f1bd.zip | |
mac80211: allow driver to impose WoWLAN restrictions
If the driver can't support WoWLAN in the current
state, this patch allows it to return 1 from the
suspend callback to do the normal deconfiguration
instead of using suspend/resume calls. Note that
if it does this, resume won't be called.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
| -rw-r--r-- | include/net/mac80211.h | 4 | ||||
| -rw-r--r-- | net/mac80211/pm.c | 16 |
2 files changed, 14 insertions, 6 deletions
diff --git a/include/net/mac80211.h b/include/net/mac80211.h index c9def42c1286..2858b4d02f5f 100644 --- a/include/net/mac80211.h +++ b/include/net/mac80211.h @@ -1628,6 +1628,10 @@ enum ieee80211_ampdu_mlme_action { * ask the device to suspend. This is only invoked when WoWLAN is * configured, otherwise the device is deconfigured completely and * reconfigured at resume time. + * The driver may also impose special conditions under which it + * wants to use the "normal" suspend (deconfigure), say if it only + * supports WoWLAN when the device is associated. In this case, it + * must return 1 from this function. * * @resume: If WoWLAN was configured, this indicates that mac80211 is * now resuming its operation, after this the device must be fully diff --git a/net/mac80211/pm.c b/net/mac80211/pm.c index 67839eb90cc1..f87e993e713b 100644 --- a/net/mac80211/pm.c +++ b/net/mac80211/pm.c @@ -72,15 +72,19 @@ int __ieee80211_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan) local->wowlan = wowlan && local->open_count; if (local->wowlan) { int err = drv_suspend(local, wowlan); - if (err) { + if (err < 0) { local->quiescing = false; return err; + } else if (err > 0) { + WARN_ON(err != 1); + local->wowlan = false; + } else { + list_for_each_entry(sdata, &local->interfaces, list) { + cancel_work_sync(&sdata->work); + ieee80211_quiesce(sdata); + } + goto suspend; } - list_for_each_entry(sdata, &local->interfaces, list) { - cancel_work_sync(&sdata->work); - ieee80211_quiesce(sdata); - } - goto suspend; } /* disable keys */ |