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From:   Naresh Kamboju <naresh.kamboju@linaro.org>
Date:   Thu, 7 May 2020 00:27:53 +0530
Message-ID: <CA+G9fYvBjUVkVhtRHVm6xXcKe2+tZN4rGdB9FzmpcfpaLhY1+g@mail.gmail.com>
Subject: Re: [PATCH net 11/16] net: ethernet: marvell: mvneta: fix fixed-link
 phydev leaks
To:     Johan Hovold <johan@kernel.org>,
        linux- stable <stable@vger.kernel.org>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        Sasha Levin <sashal@kernel.org>
Cc:     "David S. Miller" <davem@davemloft.net>,
        Vince Bridgers <vbridger@opensource.altera.com>,
        Florian Fainelli <f.fainelli@gmail.com>,
        Fugang Duan <fugang.duan@nxp.com>,
        Pantelis Antoniou <pantelis.antoniou@gmail.com>,
        Vitaly Bordug <vbordug@ru.mvista.com>,
        Claudiu Manoil <claudiu.manoil@freescale.com>,
        Li Yang <leoli@freescale.com>,
        Thomas Petazzoni <thomas.petazzoni@free-electrons.com>,
        Felix Fietkau <nbd@openwrt.org>,
        John Crispin <blogic@openwrt.org>,
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On Tue, 29 Nov 2016 at 00:00, Johan Hovold <johan@kernel.org> wrote:
>
> Make sure to deregister and free any fixed-link PHY registered using
> of_phy_register_fixed_link() on probe errors and on driver unbind.
>
> Fixes: 83895bedeee6 ("net: mvneta: add support for fixed links")
> Signed-off-by: Johan Hovold <johan@kernel.org>
> ---
>  drivers/net/ethernet/marvell/mvneta.c | 5 +++++
>  1 file changed, 5 insertions(+)
>
> diff --git a/drivers/net/ethernet/marvell/mvneta.c b/drivers/net/ethernet/marvell/mvneta.c
> index 0c0a45af950f..707bc4680b9b 100644
> --- a/drivers/net/ethernet/marvell/mvneta.c
> +++ b/drivers/net/ethernet/marvell/mvneta.c
> @@ -4191,6 +4191,8 @@ static int mvneta_probe(struct platform_device *pdev)
>         clk_disable_unprepare(pp->clk);
>  err_put_phy_node:
>         of_node_put(phy_node);
> +       if (of_phy_is_fixed_link(dn))
> +               of_phy_deregister_fixed_link(dn);

While building kernel Image for arm architecture on stable-rc 4.4 branch
the following build error found.

drivers/net/ethernet/marvell/mvneta.c:3442:3: error: implicit
declaration of function 'of_phy_deregister_fixed_link'; did you mean
'of_phy_register_fixed_link'? [-Werror=implicit-function-declaration]
|    of_phy_deregister_fixed_link(dn);
|    ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
|    of_phy_register_fixed_link

ref:
https://gitlab.com/Linaro/lkft/kernel-runs/-/jobs/541374729

- Naresh