netdev - Re: [PATCH] mwifiex: Ignore BTCOEX events from the 88W8897 firmware

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Date:   Fri, 26 Nov 2021 16:30:25 +0000 (UTC)
From:   Kalle Valo <kvalo@...eaurora.org>
To:     Jonas Dreßler <verdre@...d.nl>
Cc:     Amitkumar Karwar <amitkarwar@...il.com>,
        Ganapathi Bhat <ganapathi017@...il.com>,
        Xinming Hu <huxinming820@...il.com>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Jonas Dreßler <verdre@...d.nl>,
        Tsuchiya Yuto <kitakar@...il.com>,
        linux-wireless@...r.kernel.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Maximilian Luz <luzmaximilian@...il.com>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Pali Rohár <pali@...nel.org>
Subject: Re: [PATCH] mwifiex: Ignore BTCOEX events from the 88W8897 firmware

Jonas Dreßler <verdre@...d.nl> wrote:

> The firmware of the 88W8897 PCIe+USB card sends those events very
> unreliably, sometimes bluetooth together with 2.4ghz-wifi is used and no
> COEX event comes in, and sometimes bluetooth is disabled but the
> coexistance mode doesn't get disabled.
> 
> This means we sometimes end up capping the rx/tx window size while
> bluetooth is not enabled anymore, artifically limiting wifi speeds even
> though bluetooth is not being used.
> 
> Since we can't fix the firmware, let's just ignore those events on the
> 88W8897 device. From some Wireshark capture sessions it seems that the
> Windows driver also doesn't change the rx/tx window sizes when bluetooth
> gets enabled or disabled, so this is fairly consistent with the Windows
> driver.
> 
> Signed-off-by: Jonas Dreßler <verdre@...d.nl>

Patch applied to wireless-drivers-next.git, thanks.

84d94e16efa2 mwifiex: Ignore BTCOEX events from the 88W8897 firmware

-- 
https://patchwork.kernel.org/project/linux-wireless/patch/20211103205827.14559-1-verdre@v0yd.nl/

https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches