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

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Message-ID: <87tvm3id0f.fsf@kamboji.qca.qualcomm.com>
Date:   Wed, 03 Oct 2018 12:40:48 +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
Subject: Re: [RESEND] [PATCH 3/3] iwlwifi: Load firmware exclusively for Intel WiFi

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.

-- 
Kalle Valo