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

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Date:   Wed, 3 Oct 2018 17:27:41 +0800
From:   Kai Heng Feng <kai.heng.feng@...onical.com>
To:     Kalle Valo <kvalo@...eaurora.org>
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



> 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.

I don’t know what really happened at hardware/firmware level, but making btusb and iwlwifi load firmware sequentially can workaround the issue.

Matt Chen may be able to explain this issue with more detail.

[1] https://lkml.org/lkml/2018/10/3/322

> 
> -- 
> Kalle Valo