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openwrt-xburst/package/mac80211/patches/540-ath9k_bb_hang_check_fix.patch
nbd d7933a9d76 ath9k: reduce the number of false positives triggered by the baseband hang check by only running it when beacon transmission is blocked
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@24954 3c298f89-4303-0410-b956-a3cf2f4a3e73
2011-01-10 00:25:17 +00:00

31 lines
1.0 KiB
Diff

--- a/drivers/net/wireless/ath/ath9k/main.c
+++ b/drivers/net/wireless/ath/ath9k/main.c
@@ -251,6 +251,9 @@ int ath_set_channel(struct ath_softc *sc
if (!ath_stoprecv(sc))
stopped = false;
+ if (!ath9k_hw_check_alive(ah))
+ stopped = false;
+
/* XXX: do not flush receive queue here. We don't want
* to flush data frames already in queue because of
* changing channel. */
@@ -602,7 +605,15 @@ void ath9k_tasklet(unsigned long data)
spin_lock(&sc->sc_pcu_lock);
- if (!ath9k_hw_check_alive(ah))
+ /*
+ * 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 (ah->caps.hw_caps & ATH9K_HW_CAP_EDMA)