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References: <20210820111504.350-1-chun-jie.chen@mediatek.com> <20210820111504.350-6-chun-jie.chen@mediatek.com>
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From:   Chen-Yu Tsai <wenst@chromium.org>
Date:   Mon, 23 Aug 2021 14:42:42 +0800
Message-ID: <CAGXv+5EReMTGS02SgVO_yrpChOiw++3rwfc0Jx66CBzuDHOXAQ@mail.gmail.com>
Subject: Re: [v2 05/24] clk: mediatek: Fix resource leak in mtk_clk_simple_probe
To:     Chun-Jie Chen <chun-jie.chen@mediatek.com>
Cc:     Matthias Brugger <matthias.bgg@gmail.com>,
        Stephen Boyd <sboyd@kernel.org>,
        Nicolas Boichat <drinkcat@chromium.org>,
        Rob Herring <robh+dt@kernel.org>,
        "moderated list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE" 
        <linux-arm-kernel@lists.infradead.org>,
        LKML <linux-kernel@vger.kernel.org>,
        "moderated list:ARM/Mediatek SoC support" 
        <linux-mediatek@lists.infradead.org>, linux-clk@vger.kernel.org,
        Devicetree List <devicetree@vger.kernel.org>,
        srv_heupstream <srv_heupstream@mediatek.com>,
        Project_Global_Chrome_Upstream_Group 
        <Project_Global_Chrome_Upstream_Group@mediatek.com>
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On Fri, Aug 20, 2021 at 7:19 PM Chun-Jie Chen
<chun-jie.chen@mediatek.com> wrote:
>
> Release clock data when clock driver probe fail to fix
> possible resource leak.
>
> Signed-off-by: Chun-Jie Chen <chun-jie.chen@mediatek.com>

Reviewed-by: Chen-Yu Tsai <wenst@chromium.org>

> ---
>  drivers/clk/mediatek/clk-mtk.c | 12 ++++++++++--
>  1 file changed, 10 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/clk/mediatek/clk-mtk.c b/drivers/clk/mediatek/clk-mtk.c
> index c3d385c0cfcb..74890759e98c 100644
> --- a/drivers/clk/mediatek/clk-mtk.c
> +++ b/drivers/clk/mediatek/clk-mtk.c
> @@ -314,7 +314,15 @@ int mtk_clk_simple_probe(struct platform_device *pdev)
>
>         r = mtk_clk_register_gates(node, mcd->clks, mcd->num_clks, clk_data);

Note for future reference: there is no unregister counterpart for
mtk_clk_register_*.


>         if (r)
> -               return r;
> +               goto free_data;
>
> -       return of_clk_add_provider(node, of_clk_src_onecell_get, clk_data);
> +       r = of_clk_add_provider(node, of_clk_src_onecell_get, clk_data);
> +       if (r)
> +               goto free_data;
> +
> +       return r;
> +
> +free_data:
> +       mtk_free_clk_data(clk_data);
> +       return r;
>  }
> --
> 2.18.0
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