diff options
author | John W. Linville <linville@tuxdriver.com> | 2009-12-28 20:09:11 (GMT) |
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committer | John W. Linville <linville@tuxdriver.com> | 2009-12-28 20:09:11 (GMT) |
commit | ea1e4b842049fcc4741096538114871a74859314 (patch) | |
tree | c2336ab480ac0fd62e0dc41b391d99c97158dc9c /net/mac80211/scan.c | |
parent | b6ce5c33001b1dc83e6a1a6f30c5dccccea651b6 (diff) | |
parent | 92c6f8d849178582fc527aaf1e51dd37a74767d3 (diff) | |
download | linux-fsl-qoriq-ea1e4b842049fcc4741096538114871a74859314.tar.xz |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-2.6
Diffstat (limited to 'net/mac80211/scan.c')
-rw-r--r-- | net/mac80211/scan.c | 20 |
1 files changed, 16 insertions, 4 deletions
diff --git a/net/mac80211/scan.c b/net/mac80211/scan.c index d3381ba..66da0ab 100644 --- a/net/mac80211/scan.c +++ b/net/mac80211/scan.c @@ -227,7 +227,8 @@ static bool ieee80211_prep_hw_scan(struct ieee80211_local *local) static void ieee80211_scan_ps_enable(struct ieee80211_sub_if_data *sdata) { struct ieee80211_local *local = sdata->local; - bool ps = false; + + local->scan_ps_enabled = false; /* FIXME: what to do when local->pspolling is true? */ @@ -235,12 +236,13 @@ static void ieee80211_scan_ps_enable(struct ieee80211_sub_if_data *sdata) cancel_work_sync(&local->dynamic_ps_enable_work); if (local->hw.conf.flags & IEEE80211_CONF_PS) { - ps = true; + local->scan_ps_enabled = true; local->hw.conf.flags &= ~IEEE80211_CONF_PS; ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS); } - if (!ps || !(local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK)) + if (!(local->scan_ps_enabled) || + !(local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK)) /* * If power save was enabled, no need to send a nullfunc * frame because AP knows that we are sleeping. But if the @@ -261,7 +263,7 @@ static void ieee80211_scan_ps_disable(struct ieee80211_sub_if_data *sdata) if (!local->ps_sdata) ieee80211_send_nullfunc(local, sdata, 0); - else { + else if (local->scan_ps_enabled) { /* * In !IEEE80211_HW_PS_NULLFUNC_STACK case the hardware * will send a nullfunc frame with the powersave bit set @@ -277,6 +279,16 @@ static void ieee80211_scan_ps_disable(struct ieee80211_sub_if_data *sdata) */ local->hw.conf.flags |= IEEE80211_CONF_PS; ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS); + } else if (local->hw.conf.dynamic_ps_timeout > 0) { + /* + * If IEEE80211_CONF_PS was not set and the dynamic_ps_timer + * had been running before leaving the operating channel, + * restart the timer now and send a nullfunc frame to inform + * the AP that we are awake. + */ + ieee80211_send_nullfunc(local, sdata, 0); + mod_timer(&local->dynamic_ps_timer, jiffies + + msecs_to_jiffies(local->hw.conf.dynamic_ps_timeout)); } } |