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Subject: Re: [PATCH v2] rtl8xxxu: add bluetooth co-existence support for
 single antenna
From:   Kalle Valo <kvalo@codeaurora.org>
In-Reply-To: <20190911025045.20918-1-chiu@endlessm.com>
References: <20190911025045.20918-1-chiu@endlessm.com>
To:     Chris Chiu <chiu@endlessm.com>
Cc:     Jes.Sorensen@gmail.com, davem@davemloft.net,
        linux-wireless@vger.kernel.org, netdev@vger.kernel.org,
        linux-kernel@vger.kernel.org, linux@endlessm.com
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Message-Id: <20191002042911.6FB52611C5@smtp.codeaurora.org>
Date:   Wed,  2 Oct 2019 04:29:11 +0000 (UTC)
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Chris Chiu <chiu@endlessm.com> wrote:

> The RTL8723BU suffers the wifi disconnection problem while bluetooth
> device connected. While wifi is doing tx/rx, the bluetooth will scan
> without results. This is due to the wifi and bluetooth share the same
> single antenna for RF communication and they need to have a mechanism
> to collaborate.
> 
> BT information is provided via the packet sent from co-processor to
> host (C2H). It contains the status of BT but the rtl8723bu_handle_c2h
> dose not really handle it. And there's no bluetooth coexistence
> mechanism to deal with it.
> 
> This commit adds a workqueue to set the tdma configurations and
> coefficient table per the parsed bluetooth link status and given
> wifi connection state. The tdma/coef table comes from the vendor
> driver code of the RTL8192EU and RTL8723BU. However, this commit is
> only for single antenna scenario which RTL8192EU is default dual
> antenna. The rtl8xxxu_parse_rxdesc24 which invokes the handle_c2h
> is only for 8723b and 8192e so the mechanism is expected to work
> on both chips with single antenna. Note RTL8192EU dual antenna is
> not supported.
> 
> Signed-off-by: Chris Chiu <chiu@endlessm.com>

Failed to apply, please rebase on top of wireless-drivers-next.

fatal: sha1 information is lacking or useless (drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu.h).
error: could not build fake ancestor
Applying: rtl8xxxu: add bluetooth co-existence support for single antenna
Patch failed at 0001 rtl8xxxu: add bluetooth co-existence support for single antenna
The copy of the patch that failed is found in: .git/rebase-apply/patch

Patch set to Changes Requested.

-- 
https://patchwork.kernel.org/patch/11140223/

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