netdev - Re: [PATCH] ath10k: Fix HOST capability QMI incompatibility

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Date:   Tue, 17 Sep 2019 14:03:41 +0000 (UTC)
From:   Kalle Valo <kvalo@...eaurora.org>
To:     Bjorn Andersson <bjorn.andersson@...aro.org>
Cc:     "David S. Miller" <davem@...emloft.net>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        linux-wireless@...r.kernel.org, netdev@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        ath10k@...ts.infradead.org, stable@...r.kernel.org
Subject: Re: [PATCH] ath10k: Fix HOST capability QMI incompatibility

Bjorn Andersson <bjorn.andersson@...aro.org> wrote:

> The introduction of 768ec4c012ac ("ath10k: update HOST capability QMI
> message") served the purpose of supporting the new and extended HOST
> capability QMI message.
> 
> But while the new message adds a slew of optional members it changes the
> data type of the "daemon_support" member, which means that older
> versions of the firmware will fail to decode the incoming request
> message.
> 
> There is no way to detect this breakage from Linux and there's no way to
> recover from sending the wrong message (i.e. we can't just try one
> format and then fallback to the other), so a quirk is introduced in
> DeviceTree to indicate to the driver that the firmware requires the 8bit
> version of this message.
> 
> Cc: stable@...r.kernel.org
> Fixes: 768ec4c012ac ("ath10k: update HOST capability qmi message")
> Signed-off-by: Bjorn Andersson <bjorn.andersson@...aro.org>
> Acked-by: Rob Herring <robh@...nel.org>
> Signed-off-by: Kalle Valo <kvalo@...eaurora.org>

Patch applied to ath-next branch of ath.git, thanks.

7165ef890a4c ath10k: Fix HOST capability QMI incompatibility

-- 
https://patchwork.kernel.org/patch/11058005/

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