linux-kernel - Re: [RESEND] [PATCH 3/3] iwlwifi: Load firmware exclusively for Intel WiFi

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Message-ID: <875zyjicop.fsf@kamboji.qca.qualcomm.com>
Date:   Wed, 03 Oct 2018 12:47:50 +0300
From:   Kalle Valo <kvalo@...eaurora.org>
To:     Kai Heng Feng <kai.heng.feng@...onical.com>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        Johannes Berg <johannes.berg@...el.com>,
        Emmanuel Grumbach <emmanuel.grumbach@...el.com>,
        Luca Coelho <luciano.coelho@...el.com>,
        Intel Linux Wireless <linuxwifi@...el.com>,
        "David S. Miller" <davem@...emloft.net>,
        linux-wireless@...r.kernel.org, netdev@...r.kernel.org,
        linux-bluetooth@...r.kernel.org
Subject: Re: [RESEND] [PATCH 3/3] iwlwifi: Load firmware exclusively for Intel WiFi

Kalle Valo <kvalo@...eaurora.org> writes:

> Kai Heng Feng <kai.heng.feng@...onical.com> writes:
>
>>> On Oct 3, 2018, at 5:10 PM, Kalle Valo <kvalo@...eaurora.org> wrote:
>>> 
>>> Kai-Heng Feng <kai.heng.feng@...onical.com> writes:
>>> 
>>>> To avoid the firmware loading race between Bluetooth and WiFi on Intel
>>>> 8260, load firmware exclusively when BT_INTEL is enabled.
>>>> 
>>>> Signed-off-by: Kai-Heng Feng <kai.heng.feng@...onical.com>
>>> 
>>> Still the commit log tells nothing about the actual problem which makes
>>> review impossible.
>>
>> Sorry for that. The first two patches [1] only sends to linux-bluetooth and LMKL.
>
> For a patchset like this you should CC linux-wireless for all patches,
> otherwise people just get confused. And even more so as patch 3 seems to
> depend on the other patches.
>
>> I don’t know what really happened at hardware/firmware level, but
>> making btusb and iwlwifi load firmware sequentially can workaround the
>> issue.
>
> We don't apply ugly workarounds without understanding the issue.
>
>> Matt Chen may be able to explain this issue with more detail.
>
> Then you need to work with Matt so that the issue is properly explained
> in the commit log.

linux-bluetooth was not CCed, adding that.

-- 
Kalle Valo