netdev - Re: [PATCH] ath9k: turn on btcoex

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Message-Id: <A5972CE9-8325-404A-A63D-ED29E44FB67B@canonical.com>
Date:   Fri, 9 Feb 2018 12:21:36 +0800
From:   Kai Heng Feng <kai.heng.feng@...onical.com>
To:     Felix Fietkau <nbd@....name>
Cc:     kvalo@...eaurora.org, ath9k-devel@....qualcomm.com,
        linux-wireless@...r.kernel.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] ath9k: turn on btcoex_enable as default

Hi Felix,

> On Feb 8, 2018, at 7:02 PM, Felix Fietkau <nbd@....name> wrote:
>
> On 2018-02-08 06:28, Kai-Heng Feng wrote:
>> Without btcoex_enable, WiFi activies make both WiFi and Bluetooth
>> unstable if there's a bluetooth connection.
>>
>> Enable this option when bt_ant_diversity is disabled.
>>
>> BugLink: https://bugs.launchpad.net/bugs/1746164
>> Signed-off-by: Kai-Heng Feng <kai.heng.feng@...onical.com>
> I think this might cause regressions on devices that don't have
> bluetooth. This probably either needs more EEPROM checks, or something
> to selectively enable it only on affected platforms.
>

I think it’s better not to use dmi_match. This issue should affect more  
ath9k.
And bluetooth peripherals are more than ever now, so it would be great to  
use BT out of the box.

Can you take a look at the bug link, maybe there are other things caused  
the erratic behavior that I didn’t notice?

Kai-Heng

> - Felix