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authornbd <nbd@3c298f89-4303-0410-b956-a3cf2f4a3e73>2011-01-10 00:25:17 +0000
committernbd <nbd@3c298f89-4303-0410-b956-a3cf2f4a3e73>2011-01-10 00:25:17 +0000
commitd7933a9d76743da64d449ca9577854bc6fc0a587 (patch)
treedf325ea82c084fd84f5e42a32fcd840d898179eb /package/mac80211/patches
parent6e21adc1e02f89e8b7fd58dd25fed12c35f31caf (diff)
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
Diffstat (limited to 'package/mac80211/patches')
-rw-r--r--package/mac80211/patches/540-ath9k_bb_hang_check_fix.patch30
1 files changed, 30 insertions, 0 deletions
diff --git a/package/mac80211/patches/540-ath9k_bb_hang_check_fix.patch b/package/mac80211/patches/540-ath9k_bb_hang_check_fix.patch
new file mode 100644
index 000000000..19c6abd70
--- /dev/null
+++ b/package/mac80211/patches/540-ath9k_bb_hang_check_fix.patch
@@ -0,0 +1,30 @@
+
+--- 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)