From 1ffc1c61bdbe31105d99d65043bbf7ae6d24dbc7 Mon Sep 17 00:00:00 2001 From: Jouni Malinen Date: Tue, 19 May 2009 17:01:39 +0300 Subject: [PATCH] ath9k: Do not try to calibrate radio when in sleep mode When the chip is in sleep mode, there is no point trying to calibrate the radio since it will just results in incorrect values being read from registers and other potential issues. In addition, if we actually start processing calibrate, do not allow the chip to be put into sleep until we have completed the calibration step. Signed-off-by: Jouni Malinen Signed-off-by: John W. Linville --- drivers/net/wireless/ath/ath9k/main.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/drivers/net/wireless/ath/ath9k/main.c b/drivers/net/wireless/ath/ath9k/main.c index 7c3a98b1957d..dd54fa727a61 100644 --- a/drivers/net/wireless/ath/ath9k/main.c +++ b/drivers/net/wireless/ath/ath9k/main.c @@ -329,6 +329,12 @@ static void ath_ani_calibrate(unsigned long data) if (sc->sc_flags & SC_OP_SCANNING) goto set_timer; + /* Only calibrate if awake */ + if (sc->sc_ah->power_mode != ATH9K_PM_AWAKE) + goto set_timer; + + ath9k_ps_wakeup(sc); + /* Long calibration runs independently of short calibration. */ if ((timestamp - sc->ani.longcal_timer) >= ATH_LONG_CALINTERVAL) { longcal = true; @@ -380,6 +386,8 @@ static void ath_ani_calibrate(unsigned long data) } } + ath9k_ps_restore(sc); + set_timer: /* * Set timer interval based on previous results. -- 2.20.1