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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
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