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authorFelix Fietkau <nbd@openwrt.org>2014-04-27 14:39:06 +0000
committerFelix Fietkau <nbd@openwrt.org>2014-04-27 14:39:06 +0000
commit7e34e45dcf686b66437890bbfc9488238a989862 (patch)
treecd394db59de935c35d32ae25520f404cb98738be /package/kernel/mac80211/patches
parentb4532ad21e54d7f56e1d63039b669c2bea49ec35 (diff)
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ath9k: add ANI fix for ar913x to improve stability
Signed-off-by: Felix Fietkau <nbd@openwrt.org> SVN-Revision: 40573
Diffstat (limited to 'package/kernel/mac80211/patches')
-rw-r--r--package/kernel/mac80211/patches/300-pending_work.patch39
1 files changed, 39 insertions, 0 deletions
diff --git a/package/kernel/mac80211/patches/300-pending_work.patch b/package/kernel/mac80211/patches/300-pending_work.patch
index 71f2af3..5c7f7e0 100644
--- a/package/kernel/mac80211/patches/300-pending_work.patch
+++ b/package/kernel/mac80211/patches/300-pending_work.patch
@@ -1,3 +1,20 @@
+commit 98a713933d8495f4078f561c1e651b738dd5b531
+Author: Felix Fietkau <nbd@openwrt.org>
+Date: Sun Apr 27 14:49:03 2014 +0200
+
+ ath9k_hw: do not lower ANI setting below default on AR913x
+
+ When the amount of noise fluctuates strongly, low immunity settings
+ can sometimes disrupt signal detection on AR913x chips. When that
+ happens, no OFDM/CCK errors are reported anymore, and ANI tunes the
+ radio to the lowest immunity settings.
+ Usually rx/tx fails as well in that case.
+
+ To fix this, keep noise immunity settings at or above ANI default level,
+ which will keep radio parameters at or above INI values.
+
+ Signed-off-by: Felix Fietkau <nbd@openwrt.org>
+
commit 7cbb4c021bfd1e656f5b9953a947ab3c64e4e3b0
Author: Felix Fietkau <nbd@openwrt.org>
Date: Thu Apr 10 10:49:01 2014 +0200
@@ -98,3 +115,25 @@ Date: Sun Apr 6 23:35:28 2014 +0200
return;
drv_bss_info_changed(local, sdata, &sdata->vif.bss_conf, changed);
+--- a/drivers/net/wireless/ath/ath9k/ani.c
++++ b/drivers/net/wireless/ath/ath9k/ani.c
+@@ -155,6 +155,9 @@ static void ath9k_hw_set_ofdm_nil(struct
+ ATH9K_ANI_RSSI_THR_LOW,
+ ATH9K_ANI_RSSI_THR_HIGH);
+
++ if (AR_SREV_9100(ah) && immunityLevel < ATH9K_ANI_OFDM_DEF_LEVEL)
++ immunityLevel = ATH9K_ANI_OFDM_DEF_LEVEL;
++
+ if (!scan)
+ aniState->ofdmNoiseImmunityLevel = immunityLevel;
+
+@@ -235,6 +238,9 @@ static void ath9k_hw_set_cck_nil(struct
+ BEACON_RSSI(ah), ATH9K_ANI_RSSI_THR_LOW,
+ ATH9K_ANI_RSSI_THR_HIGH);
+
++ if (AR_SREV_9100(ah) && immunityLevel < ATH9K_ANI_CCK_DEF_LEVEL)
++ immunityLevel = ATH9K_ANI_CCK_DEF_LEVEL;
++
+ if (ah->opmode == NL80211_IFTYPE_STATION &&
+ BEACON_RSSI(ah) <= ATH9K_ANI_RSSI_THR_LOW &&
+ immunityLevel > ATH9K_ANI_CCK_MAX_LEVEL_LOW_RSSI)