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iwlwifi: optimize power saving 

In hostap AP mode, every time the client sends the AP
a packet the STA_NOTIFY_AWAKE code is sent from mac80211.
This results in a command being sent to the uCode even if
the client was not asleep.

The following simple patch has fixed the issue for me without any
degradation that I can find.

Signed-off-by: Daniel Halperin <dhalperi@cs.washington.edu>
Acked-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
This commit is contained in:
Daniel Halperin 2010-01-19 10:22:19 -08:00 committed by Reinette Chatre
parent 1dbfd9d46a
commit 49dcc819b0
1 changed files with 2 additions and 0 deletions
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2
drivers/net/wireless/iwlwifi/iwl-agn.c
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@ -3007,6 +3007,8 @@ static void iwl_mac_sta_notify(struct ieee80211_hw *hw,
break;
case STA_NOTIFY_AWAKE:
WARN_ON(!sta_priv->client);
if (!sta_priv->asleep)
break;
sta_priv->asleep = false;
sta_id = iwl_find_station(priv, sta->addr);
if (sta_id != IWL_INVALID_STATION)