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ath9k: get rid of unnecessary setpower calls

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We are using setpower routines regardless of the current power mode.
Don't bother the hardware, if it is not necessary.

Changes-licensed-under: ISC
Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Gabor Juhos 2009-07-24 17:27:22 +02:00 committed by John W. Linville
parent 96148326c4
commit cbdec97587
1 changed files with 6 additions and 2 deletions
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8
drivers/net/wireless/ath/ath9k/hw.c
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@ -478,6 +478,8 @@ static struct ath_hw *ath9k_hw_newstate(u16 devid, struct ath_softc *sc,
ah->gbeacon_rate = 0;
ah->power_mode = ATH9K_PM_UNDEFINED;
return ah;
}
@ -2819,6 +2821,9 @@ static bool ath9k_hw_setpower_nolock(struct ath_hw *ah,
"UNDEFINED"
};
if (ah->power_mode == mode)
return status;
DPRINTF(ah->ah_sc, ATH_DBG_RESET, "%s -> %s\n",
modes[ah->power_mode], modes[mode]);
@ -2863,8 +2868,7 @@ void ath9k_ps_wakeup(struct ath_softc *sc)
if (++sc->ps_usecount != 1)
goto unlock;
if (sc->sc_ah->power_mode != ATH9K_PM_AWAKE)
ath9k_hw_setpower_nolock(sc->sc_ah, ATH9K_PM_AWAKE);
ath9k_hw_setpower_nolock(sc->sc_ah, ATH9K_PM_AWAKE);
unlock:
spin_unlock_irqrestore(&sc->sc_pm_lock, flags);