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From 349626c9a263b41822a0c5a29061964b4a71ec3f Mon Sep 17 00:00:00 2001
From: Gabor Juhos <juhosg@openwrt.org>
Date: Thu, 23 Jul 2009 09:55:52 +0200
Subject: [PATCH 2/2] ath9k: get rid of unnecessary setpower calls
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>
---
drivers/net/wireless/ath/ath9k/hw.c | 8 ++++++--
1 files changed, 6 insertions(+), 2 deletions(-)
--- a/drivers/net/wireless/ath/ath9k/hw.c
+++ b/drivers/net/wireless/ath/ath9k/hw.c
@@ -475,6 +475,8 @@ static struct ath_hw *ath9k_hw_newstate(
ah->gbeacon_rate = 0;
+ ah->power_mode = ATH9K_PM_UNDEFINED;
+
return ah;
}
@@ -2749,6 +2751,9 @@ static bool ath9k_hw_setpower_nolock(str
"UNDEFINED"
};
+ if (ah->power_mode == mode)
+ return status;
+
DPRINTF(ah->ah_sc, ATH_DBG_RESET, "%s -> %s\n",
modes[ah->power_mode], modes[mode]);
@@ -2793,8 +2798,7 @@ void ath9k_ps_wakeup(struct ath_softc *s
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);
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