netdev - Re: [PATCH] arm64: dts: fsl: DPAA FMan DMA operations are coherent

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Message-ID: <20201116070652.GA5849@dragon>
Date:   Mon, 16 Nov 2020 15:06:53 +0800
From:   Shawn Guo <shawnguo@...nel.org>
To:     Madalin Bucur <madalin.bucur@....com>
Cc:     "Madalin Bucur (OSS)" <madalin.bucur@....nxp.com>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        "Camelia Alexandra Groza (OSS)" <camelia.groza@....nxp.com>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        Leo Li <leoyang.li@....com>,
        "robh+dt@...nel.org" <robh+dt@...nel.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH] arm64: dts: fsl: DPAA FMan DMA operations are coherent

On Wed, Nov 11, 2020 at 03:33:19PM +0000, Madalin Bucur wrote:
> > -----Original Message-----
> > From: linux-arm-kernel <linux-arm-kernel-bounces@...ts.infradead.org> On
> > Behalf Of Shawn Guo
> > To: Madalin Bucur (OSS) <madalin.bucur@....nxp.com>
> > Subject: Re: [PATCH] arm64: dts: fsl: DPAA FMan DMA operations are
> > coherent
> > 
> > On Mon, Oct 05, 2020 at 03:46:39PM +0300, Madalin Bucur wrote:
> > > Although the DPAA 1 FMan operations are coherent, the device tree
> > > node for the FMan does not indicate that, resulting in a needless
> > > loss of performance. Adding the missing dma-coherent property.
> > >
> > > Fixes: 1ffbecdd8321 ("arm64: dts: add DPAA FMan nodes")
> > >
> > > Signed-off-by: Madalin Bucur <madalin.bucur@....nxp.com>
> > > Tested-by: Camelia Groza <camelia.groza@....nxp.com>
> > 
> > Applied, thanks.
> 
> Hi, Shawn,
> 
> will this fix for the device trees be picked up in the stable trees as well?
> Do I need to do something about it?

When it's landed in Linus' tree, stable kernel will pick it up due to
the Fixes: tag there.  So you do not need to do anything about it.

> 
> Thanks
> Madalin
> 
> PS: will this make it into v5.10 or v5.11?

I'm sending it to arm-soc folks as a material for v5.10-rc.  So if
everything goes well, it will get into v5.10.

Shawn