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ath9k: Do not try to calibrate radio when in sleep mode

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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 <jouni.malinen@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Jouni Malinen 2009-05-19 17:01:39 +03:00 committed by John W. Linville
parent 9a23f9ca50
commit 1ffc1c61bd
1 changed files with 8 additions and 0 deletions
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8
drivers/net/wireless/ath/ath9k/main.c
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@ -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.