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ath9k: optimize the hardware hang check 

Since it's only called when beacons are stuck, move it to the SWBA handler
tasklet, to avoid doing redundant checks on every single interrupt.

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Felix Fietkau 2012-04-12 22:35:58 +02:00 committed by John W. Linville
parent 7b27ba4e9c
commit b381fa3229
2 changed files with 3 additions and 11 deletions
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3
drivers/net/wireless/ath/ath9k/beacon.c
View File

@ -369,6 +369,9 @@ void ath_beacon_tasklet(unsigned long data)
if (ath9k_hw_numtxpending(ah, sc->beacon.beaconq) != 0) {
sc->beacon.bmisscnt++;
if (!ath9k_hw_check_alive(ah))
ieee80211_queue_work(sc->hw, &sc->hw_check_work);
if (sc->beacon.bmisscnt < BSTUCK_THRESH * sc->nbcnvifs) {
ath_dbg(common, BSTUCK,
"missed %u consecutive beacons\n",

11
drivers/net/wireless/ath/ath9k/main.c
View File

@ -692,17 +692,6 @@ void ath9k_tasklet(unsigned long data)
goto out;
}
/*
* Only run the baseband hang check if beacons stop working in AP or
* IBSS mode, because it has a high false positive rate. For station
* mode it should not be necessary, since the upper layers will detect
* this through a beacon miss automatically and the following channel
* change will trigger a hardware reset anyway
*/
if (ath9k_hw_numtxpending(ah, sc->beacon.beaconq) != 0 &&
!ath9k_hw_check_alive(ah))
ieee80211_queue_work(sc->hw, &sc->hw_check_work);
if ((status & ATH9K_INT_TSFOOR) && sc->ps_enabled) {
/*
* TSF sync does not look correct; remain awake to sync with