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@@ -1,3 +1,20 @@
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+commit 98a713933d8495f4078f561c1e651b738dd5b531
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+Author: Felix Fietkau <[email protected]>
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+Date: Sun Apr 27 14:49:03 2014 +0200
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+
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+ ath9k_hw: do not lower ANI setting below default on AR913x
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+
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+ When the amount of noise fluctuates strongly, low immunity settings
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+ can sometimes disrupt signal detection on AR913x chips. When that
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+ happens, no OFDM/CCK errors are reported anymore, and ANI tunes the
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+ radio to the lowest immunity settings.
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+ Usually rx/tx fails as well in that case.
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+
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+ To fix this, keep noise immunity settings at or above ANI default level,
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+ which will keep radio parameters at or above INI values.
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+
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+ Signed-off-by: Felix Fietkau <[email protected]>
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+
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commit 7cbb4c021bfd1e656f5b9953a947ab3c64e4e3b0
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Author: Felix Fietkau <[email protected]>
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Date: Thu Apr 10 10:49:01 2014 +0200
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@@ -98,3 +115,25 @@ Date: Sun Apr 6 23:35:28 2014 +0200
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return;
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drv_bss_info_changed(local, sdata, &sdata->vif.bss_conf, changed);
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+--- a/drivers/net/wireless/ath/ath9k/ani.c
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++++ b/drivers/net/wireless/ath/ath9k/ani.c
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+@@ -155,6 +155,9 @@ static void ath9k_hw_set_ofdm_nil(struct
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+ ATH9K_ANI_RSSI_THR_LOW,
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+ ATH9K_ANI_RSSI_THR_HIGH);
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+
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++ if (AR_SREV_9100(ah) && immunityLevel < ATH9K_ANI_OFDM_DEF_LEVEL)
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++ immunityLevel = ATH9K_ANI_OFDM_DEF_LEVEL;
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++
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+ if (!scan)
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+ aniState->ofdmNoiseImmunityLevel = immunityLevel;
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+
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+@@ -235,6 +238,9 @@ static void ath9k_hw_set_cck_nil(struct
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+ BEACON_RSSI(ah), ATH9K_ANI_RSSI_THR_LOW,
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+ ATH9K_ANI_RSSI_THR_HIGH);
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+
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++ if (AR_SREV_9100(ah) && immunityLevel < ATH9K_ANI_CCK_DEF_LEVEL)
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++ immunityLevel = ATH9K_ANI_CCK_DEF_LEVEL;
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++
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+ if (ah->opmode == NL80211_IFTYPE_STATION &&
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+ BEACON_RSSI(ah) <= ATH9K_ANI_RSSI_THR_LOW &&
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+ immunityLevel > ATH9K_ANI_CCK_MAX_LEVEL_LOW_RSSI)
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Felix Fietkau