linux-kernel - Re: [PATCH v3 27/31] clk: mediatek: Unregister clks in mtk_clk_simple

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Message-ID: <f489a150d8c1c6dbb1f4162d3d53c7b9f92ab6fd.camel@mediatek.com>
Date:   Tue, 15 Feb 2022 15:11:10 +0800
From:   Chun-Jie Chen <chun-jie.chen@...iatek.com>
To:     Chen-Yu Tsai <wenst@...omium.org>, Stephen Boyd <sboyd@...nel.org>,
        Michael Turquette <mturquette@...libre.com>,
        Matthias Brugger <matthias.bgg@...il.com>
CC:     AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>,
        Miles Chen <miles.chen@...iatek.com>,
        <linux-clk@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-mediatek@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v3 27/31] clk: mediatek: Unregister clks in
 mtk_clk_simple_probe() error path

On Tue, 2022-02-08 at 20:40 +0800, Chen-Yu Tsai wrote:
> Until now the mediatek clk driver library did not have any way to
> unregister clks, and so all drivers did not do proper cleanup in
> their error paths.
> 
> Now that the library does have APIs to unregister clks, use them
> in the error path of mtk_clk_simple_probe() to do proper cleanup.
> 
> Signed-off-by: Chen-Yu Tsai <wenst@...omium.org>
> Reviewed-by: Miles Chen <miles.chen@...iatek.com>
> Reviewed-by: AngeloGioacchino Del Regno <
> angelogioacchino.delregno@...labora.com>

Reviewed-by: Chun-Jie Chen <chun-jie.chen@...iatek.com>
> ---
>  drivers/clk/mediatek/clk-mtk.c | 4 +++-
>  1 file changed, 3 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/clk/mediatek/clk-mtk.c
> b/drivers/clk/mediatek/clk-mtk.c
> index 8f15e9de742e..0e027be0d5fc 100644
> --- a/drivers/clk/mediatek/clk-mtk.c
> +++ b/drivers/clk/mediatek/clk-mtk.c
> @@ -439,12 +439,14 @@ int mtk_clk_simple_probe(struct platform_device
> *pdev)
>  
>  	r = of_clk_add_provider(node, of_clk_src_onecell_get,
> clk_data);
>  	if (r)
> -		goto free_data;
> +		goto unregister_clks;
>  
>  	platform_set_drvdata(pdev, clk_data);
>  
>  	return r;
>  
> +unregister_clks:
> +	mtk_clk_unregister_gates(mcd->clks, mcd->num_clks, clk_data);
>  free_data:
>  	mtk_free_clk_data(clk_data);
>  	return r;