[PATCHv2] ath10k: Enable adaptive CCA

Kennady Rajan, Maharaja c_mkenna at qti.qualcomm.com
Wed Oct 14 03:11:46 PDT 2015

> From: Maharaja <c_mkenna at qti.qualcomm.com>
>> European Union has made it mandatory that all devices working in 2.4 GHz
>> has to adhere to the ETSI specification (ETSI EN 300 328 V1.9.1)
>> beginnig this year. The standard basically speaks about interferences
>> in 2.4Ghz band.
>> For example, when 802.11 device detects interference, TX must be stopped
>> as long as interference is present.
>> Adaptive CCA is a feature, when enabled the device learns from the
>> environment and configures CCA levels adaptively. This will improve
>> detecting interferences and the device can stop trasmissions till the
>> interference is present eventually leading to good performances in
>> varying interference conditions.
>> The patch includes code for enabling adaptive CCA for 10.2.4 firmware on
>> QCA988X.
>> Signed-off-by: Maharaja Kennadyrajan <c_mkenna at qti.qualcomm.com>
>> Signed-off-by: Manikanta Pubbisetty <c_mpubbi at qti.qualcomm.com>

>Please do not send untested code:

>In function 'ath10k_core_get_fw_feature_str',
>    inlined from 'ath10k_core_get_fw_features_str' at
>    drivers/net/wireless/ath/ath10k/core.c:184:41:
>drivers/net/wireless/ath/ath10k/core.c:161:2: error: call to
>    '__compiletime_assert_162' declared with attribute error:
>    BUILD_BUG_ON failed: ARRAY_SIZE(ath10k_core_fw_feature_str) !=

I have missed to add the wireless module in menuconfig while compilation. So I haven't see the errors while running the compilation script. Now I changed and compilation error has been resolved.


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