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Re: [ath9k-devel] [PATCH] ath9k: Fix enabling OFDM weak signal detection

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2009/7/10 Luis R. Rodriguez <mcgrof@xxxxxxxxx>:
> On Thu, Jul 9, 2009 at 2:12 PM, Steven Luo<steven@xxxxxxxxxxxxx> wrote:
>> From: Steven Luo <steven@xxxxxxxxxxxxx>
>>
>> It seems that OFDM weak signal detection should be enabled after an ANI
>> state reset, as indicated by the initial setting of ofdmWeakSigDetectOff
>> and what the open Atheros HAL does.  Unfortunately, the reversed sense
>> of ofdmWeakSigDetectOff (true if weak signal detection is NOT enabled)
>> seems to have resulted in a mixup here, causing weak signal detection to
>> be disabled.
>>
>> This patch significantly improves reception and throughput from distant
>> stations for my AR5416-based AP running compat-wireless 2009-06-25.
>>
>> Signed-off-by: Steven Luo <steven@xxxxxxxxxxxxx>
>> Cc: stable@xxxxxxxxxx
>> ---
>
> NACK for now, please give us a chance to review this -- this may
> actually be correct.
>
>  Luis
>
>> --- a/drivers/net/wireless/ath/ath9k/ani.c      2009-06-24 21:14:00.000000000 -0700
>> +++ b/drivers/net/wireless/ath/ath9k/ani.c      2009-07-06 02:45:57.000000000 -0700
>> @@ -482,7 +482,7 @@ void ath9k_ani_reset(struct ath_hw *ah)
>>                ath9k_hw_ani_control(ah, ATH9K_ANI_SPUR_IMMUNITY_LEVEL, 0);
>>                ath9k_hw_ani_control(ah, ATH9K_ANI_FIRSTEP_LEVEL, 0);
>>                ath9k_hw_ani_control(ah, ATH9K_ANI_OFDM_WEAK_SIGNAL_DETECTION,
>> -                                    !ATH9K_ANI_USE_OFDM_WEAK_SIG);
>> +                                    ATH9K_ANI_USE_OFDM_WEAK_SIG);
>>                ath9k_hw_ani_control(ah, ATH9K_ANI_CCK_WEAK_SIGNAL_THR,
>>                                     ATH9K_ANI_CCK_WEAK_SIG_THR);
>>
>>

Does your AP operate on 2.4GHz band or 5GHz ?

-- 
GPG ID: 0xD21DB2DB
As you read this post global entropy rises. Have Fun ;-)
Nick
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