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ath9k: fix cycle counter tracking

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git-svn-id: svn://svn.openwrt.org/openwrt/trunk@23824 3c298f89-4303-0410-b956-a3cf2f4a3e73
This commit is contained in:
nbd 2010-11-03 14:56:05 +00:00
parent 857768e848
commit 30a7395e39
1 changed files with 33 additions and 0 deletions
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33
package/mac80211/patches/590-ath9k_fix_cycle_counter_ps.patch Normal file
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@ -0,0 +1,33 @@
--- a/drivers/net/wireless/ath/ath9k/main.c
+++ b/drivers/net/wireless/ath/ath9k/main.c
@@ -94,11 +94,13 @@ void ath9k_ps_wakeup(struct ath_softc *s
{
struct ath_common *common = ath9k_hw_common(sc->sc_ah);
unsigned long flags;
+ enum ath9k_power_mode power_mode;
spin_lock_irqsave(&sc->sc_pm_lock, flags);
if (++sc->ps_usecount != 1)
goto unlock;
+ power_mode = sc->sc_ah->power_mode;
ath9k_hw_setpower(sc->sc_ah, ATH9K_PM_AWAKE);
/*
@@ -106,10 +108,12 @@ void ath9k_ps_wakeup(struct ath_softc *s
* useful data. Better clear them now so that they don't mess up
* survey data results.
*/
- spin_lock(&common->cc_lock);
- ath_hw_cycle_counters_update(common);
- memset(&common->cc_survey, 0, sizeof(common->cc_survey));
- spin_unlock(&common->cc_lock);
+ if (power_mode != ATH9K_PM_AWAKE) {
+ spin_lock(&common->cc_lock);
+ ath_hw_cycle_counters_update(common);
+ memset(&common->cc_survey, 0, sizeof(common->cc_survey));
+ spin_unlock(&common->cc_lock);
+ }
unlock:
spin_unlock_irqrestore(&sc->sc_pm_lock, flags);