linux-kernel - Re: [PATCH net 11/16] net: ethernet: marvell: mvneta: fix fixed-link phydev leaks

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Message-ID: <20200508120205.GA4089177@kroah.com>
Date:   Fri, 8 May 2020 14:02:05 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     Johan Hovold <johan@...nel.org>
Cc:     Naresh Kamboju <naresh.kamboju@...aro.org>,
        linux- stable <stable@...r.kernel.org>,
        Sasha Levin <sashal@...nel.org>,
        "David S. Miller" <davem@...emloft.net>,
        Florian Fainelli <f.fainelli@...il.com>,
        Fugang Duan <fugang.duan@....com>,
        Pantelis Antoniou <pantelis.antoniou@...il.com>,
        Thomas Petazzoni <thomas.petazzoni@...e-electrons.com>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Sergei Shtylyov <sergei.shtylyov@...entembedded.com>,
        Lars Persson <lars.persson@...s.com>,
        Grygorii Strashko <grygorii.strashko@...com>,
        Rob Herring <robh+dt@...nel.org>,
        Frank Rowand <frowand.list@...il.com>,
        Andrew Lunn <andrew@...n.ch>, Netdev <netdev@...r.kernel.org>,
        nios2-dev@...ts.rocketboards.org,
        open list <linux-kernel@...r.kernel.org>,
        linuxppc-dev@...ts.ozlabs.org, linux-mediatek@...ts.infradead.org,
        linux-renesas-soc@...r.kernel.org, linux-omap@...r.kernel.org,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@...r.kernel.org>, lkft-triage@...ts.linaro.org
Subject: Re: [PATCH net 11/16] net: ethernet: marvell: mvneta: fix fixed-link
 phydev leaks

On Fri, May 08, 2020 at 08:21:19AM +0200, Johan Hovold wrote:
> On Fri, May 08, 2020 at 03:35:02AM +0530, Naresh Kamboju wrote:
> > On Thu, 7 May 2020 at 16:43, Greg Kroah-Hartman
> > <gregkh@...uxfoundation.org> wrote:
> > >
> > <trim>
> > > > >
> > > > > Greg, 3f65047c853a ("of_mdio: add helper to deregister fixed-link
> > > > > PHYs") needs to be backported as well for these.
> > > > >
> > > > > Original series can be found here:
> > > > >
> > > > >     https://lkml.kernel.org/r/1480357509-28074-1-git-send-email-johan@kernel.org
> > > >
> > > > Ah, thanks for that, I thought I dropped all of the ones that caused
> > > > build errors, but missed the above one.  I'll go take the whole series
> > > > instead.
> > >
> > > This should now all be fixed up, thanks.
> > 
> > While building kernel Image for arm architecture on stable-rc 4.4 branch
> > the following build error found.
> > 
> > of_mdio: add helper to deregister fixed-link PHYs
> > commit 3f65047c853a2a5abcd8ac1984af3452b5df4ada upstream.
> > 
> > Add helper to deregister fixed-link PHYs registered using
> > of_phy_register_fixed_link().
> > 
> > Convert the two drivers that care to deregister their fixed-link PHYs to
> > use the new helper, but note that most drivers currently fail to do so.
> > 
> > Signed-off-by: Johan Hovold <johan@...nel.org>
> > Signed-off-by: David S. Miller <davem@...emloft.net>
> > [only take helper function for 4.4.y - gregkh]
> > 
> >  # make -sk KBUILD_BUILD_USER=TuxBuild -C/linux -j16 ARCH=arm
> > CROSS_COMPILE=arm-linux-gnueabihf- HOSTCC=gcc CC="sccache
> > arm-linux-gnueabihf-gcc" O=build zImage
> > 70 #
> > 71 ../drivers/of/of_mdio.c: In function ‘of_phy_deregister_fixed_link’:
> > 72 ../drivers/of/of_mdio.c:379:2: error: implicit declaration of
> > function ‘fixed_phy_unregister’; did you mean ‘fixed_phy_register’?
> > [-Werror=implicit-function-declaration]
> > 73  379 | fixed_phy_unregister(phydev);
> > 74  | ^~~~~~~~~~~~~~~~~~~~
> > 75  | fixed_phy_register
> > 76 ../drivers/of/of_mdio.c:381:22: error: ‘struct phy_device’ has no
> > member named ‘mdio’; did you mean ‘mdix’?
> > 77  381 | put_device(&phydev->mdio.dev); /* of_phy_find_device() */
> > 78  | ^~~~
> > 79  | mdix
> 
> Another dependency: 5bcbe0f35fb1 ("phy: fixed: Fix removal of phys.")
> 
> Greg, these patches are from four years ago so can't really remember if
> there are other dependencies or reasons against backporting them (the
> missing stable tags are per Dave's preference), sorry.
> 
> The cover letter also mentions another dependency, but that may just
> have been some context conflict.
> 
> Perhaps you better drop these unless you want to review them closer.

Good idea, I've dropped them all for now, sorry for the noise.

greg k-h