linux-kernel - Re: [PATCH v4 3/6] clk: mediatek: add audsys support for MT2701

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Date:   Mon, 19 Mar 2018 13:31:24 -0700
From:   Stephen Boyd <sboyd@...nel.org>
To:     Rob Herring <robh+dt@...nel.org>,
        Ryder Lee <ryder.lee@...iatek.com>,
        Stephen Boyd <sboyd@...eaurora.org>
Cc:     Mark Brown <broonie@...nel.org>, Lee Jones <lee.jones@...aro.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        linux-mediatek@...ts.infradead.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-clk@...r.kernel.org,
        Garlic Tseng <garlic.tseng@...iatek.com>,
        Ryder Lee <ryder.lee@...iatek.com>
Subject: Re: [PATCH v4 3/6] clk: mediatek: add audsys support for MT2701

Quoting Ryder Lee (2018-03-06 01:09:28)
> +
> +static const struct of_device_id of_match_clk_mt2701_aud[] = {
> +       { .compatible = "mediatek,mt2701-audsys", },
> +       {}
> +};
> +
> +static int clk_mt2701_aud_probe(struct platform_device *pdev)
> +{
> +       struct clk_onecell_data *clk_data;
> +       struct device_node *node = pdev->dev.of_node;
> +       int r;
> +
> +       clk_data = mtk_alloc_clk_data(CLK_AUD_NR);
> +
> +       mtk_clk_register_gates(node, audio_clks, ARRAY_SIZE(audio_clks),
> +                              clk_data);
> +
> +       r = of_clk_add_provider(node, of_clk_src_onecell_get, clk_data);
> +       if (r) {
> +               dev_err(&pdev->dev,
> +                       "could not register clock provider: %s: %d\n",
> +                       pdev->name, r);
> +
> +               return r;
> +       }

This fails to remove the clk provider when devm_of_platform_populate()
returns an error.

> +
> +       return devm_of_platform_populate(&pdev->dev);
> +}
> +
> +static struct platform_driver clk_mt2701_aud_drv = {
> +       .probe = clk_mt2701_aud_probe,
> +       .driver = {
> +               .name = "clk-mt2701-aud",
> +               .of_match_table = of_match_clk_mt2701_aud,
> +       },
> +};
> +
> +builtin_platform_driver(clk_mt2701_aud_drv);