Re: [PATCH v3 3/3] clk: qcom: use devm_pm_runtime_enable and devm_pm_clk_create

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On Sat, Jul 31, 2021 at 9:50 PM Dmitry Baryshkov
<dmitry.baryshkov@xxxxxxxxxx> wrote:
>
> Use two new helpers instead of pm_runtime_enable() and pm_clk_create(),
> removing the need for calling pm_runtime_disable and pm_clk_destroy().
>
> Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx>

This needs some ACKs if you want me to apply it.

> ---
>  drivers/clk/qcom/camcc-sc7180.c       | 25 +++++++++------------
>  drivers/clk/qcom/lpass-gfm-sm8250.c   | 21 ++++++++----------
>  drivers/clk/qcom/lpasscorecc-sc7180.c | 18 ++-------------
>  drivers/clk/qcom/mss-sc7180.c         | 30 +++++++------------------
>  drivers/clk/qcom/q6sstop-qcs404.c     | 32 ++++++++-------------------
>  drivers/clk/qcom/turingcc-qcs404.c    | 30 +++++++------------------
>  6 files changed, 46 insertions(+), 110 deletions(-)
>
> diff --git a/drivers/clk/qcom/camcc-sc7180.c b/drivers/clk/qcom/camcc-sc7180.c
> index 9bcf2f8ed4de..ce73ee9037cb 100644
> --- a/drivers/clk/qcom/camcc-sc7180.c
> +++ b/drivers/clk/qcom/camcc-sc7180.c
> @@ -1652,32 +1652,35 @@ static int cam_cc_sc7180_probe(struct platform_device *pdev)
>         struct regmap *regmap;
>         int ret;
>
> -       pm_runtime_enable(&pdev->dev);
> -       ret = pm_clk_create(&pdev->dev);
> +       ret = devm_pm_runtime_enable(&pdev->dev);
> +       if (ret < 0)
> +               return ret;
> +
> +       ret = devm_pm_clk_create(&pdev->dev);
>         if (ret < 0)
>                 return ret;
>
>         ret = pm_clk_add(&pdev->dev, "xo");
>         if (ret < 0) {
>                 dev_err(&pdev->dev, "Failed to acquire XO clock\n");
> -               goto disable_pm_runtime;
> +               return ret;
>         }
>
>         ret = pm_clk_add(&pdev->dev, "iface");
>         if (ret < 0) {
>                 dev_err(&pdev->dev, "Failed to acquire iface clock\n");
> -               goto disable_pm_runtime;
> +               return ret;
>         }
>
>         ret = pm_runtime_get(&pdev->dev);
>         if (ret)
> -               goto destroy_pm_clk;
> +               return ret;
>
>         regmap = qcom_cc_map(pdev, &cam_cc_sc7180_desc);
>         if (IS_ERR(regmap)) {
>                 ret = PTR_ERR(regmap);
>                 pm_runtime_put(&pdev->dev);
> -               goto destroy_pm_clk;
> +               return ret;
>         }
>
>         clk_fabia_pll_configure(&cam_cc_pll0, regmap, &cam_cc_pll0_config);
> @@ -1689,18 +1692,10 @@ static int cam_cc_sc7180_probe(struct platform_device *pdev)
>         pm_runtime_put(&pdev->dev);
>         if (ret < 0) {
>                 dev_err(&pdev->dev, "Failed to register CAM CC clocks\n");
> -               goto destroy_pm_clk;
> +               return ret;
>         }
>
>         return 0;
> -
> -destroy_pm_clk:
> -       pm_clk_destroy(&pdev->dev);
> -
> -disable_pm_runtime:
> -       pm_runtime_disable(&pdev->dev);
> -
> -       return ret;
>  }
>
>  static const struct dev_pm_ops cam_cc_pm_ops = {
> diff --git a/drivers/clk/qcom/lpass-gfm-sm8250.c b/drivers/clk/qcom/lpass-gfm-sm8250.c
> index f5e31e692b9b..96f476f24eb2 100644
> --- a/drivers/clk/qcom/lpass-gfm-sm8250.c
> +++ b/drivers/clk/qcom/lpass-gfm-sm8250.c
> @@ -251,15 +251,18 @@ static int lpass_gfm_clk_driver_probe(struct platform_device *pdev)
>         if (IS_ERR(cc->base))
>                 return PTR_ERR(cc->base);
>
> -       pm_runtime_enable(dev);
> -       err = pm_clk_create(dev);
> +       err = devm_pm_runtime_enable(dev);
>         if (err)
> -               goto pm_clk_err;
> +               return err;
> +
> +       err = devm_pm_clk_create(dev);
> +       if (err)
> +               return err;
>
>         err = of_pm_clk_add_clks(dev);
>         if (err < 0) {
>                 dev_dbg(dev, "Failed to get lpass core voting clocks\n");
> -               goto clk_reg_err;
> +               return err;
>         }
>
>         for (i = 0; i < data->onecell_data->num; i++) {
> @@ -273,22 +276,16 @@ static int lpass_gfm_clk_driver_probe(struct platform_device *pdev)
>
>                 err = devm_clk_hw_register(dev, &data->gfm_clks[i]->hw);
>                 if (err)
> -                       goto clk_reg_err;
> +                       return err;
>
>         }
>
>         err = devm_of_clk_add_hw_provider(dev, of_clk_hw_onecell_get,
>                                           data->onecell_data);
>         if (err)
> -               goto clk_reg_err;
> +               return err;
>
>         return 0;
> -
> -clk_reg_err:
> -       pm_clk_destroy(dev);
> -pm_clk_err:
> -       pm_runtime_disable(dev);
> -       return err;
>  }
>
>  static const struct of_device_id lpass_gfm_clk_match_table[] = {
> diff --git a/drivers/clk/qcom/lpasscorecc-sc7180.c b/drivers/clk/qcom/lpasscorecc-sc7180.c
> index 2e0ecc38efdd..ac09b7b840ab 100644
> --- a/drivers/clk/qcom/lpasscorecc-sc7180.c
> +++ b/drivers/clk/qcom/lpasscorecc-sc7180.c
> @@ -356,32 +356,18 @@ static const struct qcom_cc_desc lpass_audio_hm_sc7180_desc = {
>         .num_gdscs = ARRAY_SIZE(lpass_audio_hm_sc7180_gdscs),
>  };
>
> -static void lpass_pm_runtime_disable(void *data)
> -{
> -       pm_runtime_disable(data);
> -}
> -
> -static void lpass_pm_clk_destroy(void *data)
> -{
> -       pm_clk_destroy(data);
> -}
> -
>  static int lpass_create_pm_clks(struct platform_device *pdev)
>  {
>         int ret;
>
>         pm_runtime_use_autosuspend(&pdev->dev);
>         pm_runtime_set_autosuspend_delay(&pdev->dev, 500);
> -       pm_runtime_enable(&pdev->dev);
>
> -       ret = devm_add_action_or_reset(&pdev->dev, lpass_pm_runtime_disable, &pdev->dev);
> +       ret = devm_pm_runtime_enable(&pdev->dev);
>         if (ret)
>                 return ret;
>
> -       ret = pm_clk_create(&pdev->dev);
> -       if (ret)
> -               return ret;
> -       ret = devm_add_action_or_reset(&pdev->dev, lpass_pm_clk_destroy, &pdev->dev);
> +       ret = devm_pm_clk_create(&pdev->dev);
>         if (ret)
>                 return ret;
>
> diff --git a/drivers/clk/qcom/mss-sc7180.c b/drivers/clk/qcom/mss-sc7180.c
> index 673fa1a4f734..5a1407440662 100644
> --- a/drivers/clk/qcom/mss-sc7180.c
> +++ b/drivers/clk/qcom/mss-sc7180.c
> @@ -73,36 +73,23 @@ static int mss_sc7180_probe(struct platform_device *pdev)
>  {
>         int ret;
>
> -       pm_runtime_enable(&pdev->dev);
> -       ret = pm_clk_create(&pdev->dev);
> +       ret = devm_pm_runtime_enable(&pdev->dev);
>         if (ret)
> -               goto disable_pm_runtime;
> +               return ret;
> +
> +       ret = devm_pm_clk_create(&pdev->dev);
> +       if (ret)
> +               return ret;
>
>         ret = pm_clk_add(&pdev->dev, "cfg_ahb");
>         if (ret < 0) {
>                 dev_err(&pdev->dev, "failed to acquire iface clock\n");
> -               goto destroy_pm_clk;
> +               return ret;
>         }
>
>         ret = qcom_cc_probe(pdev, &mss_sc7180_desc);
>         if (ret < 0)
> -               goto destroy_pm_clk;
> -
> -       return 0;
> -
> -destroy_pm_clk:
> -       pm_clk_destroy(&pdev->dev);
> -
> -disable_pm_runtime:
> -       pm_runtime_disable(&pdev->dev);
> -
> -       return ret;
> -}
> -
> -static int mss_sc7180_remove(struct platform_device *pdev)
> -{
> -       pm_clk_destroy(&pdev->dev);
> -       pm_runtime_disable(&pdev->dev);
> +               return ret;
>
>         return 0;
>  }
> @@ -119,7 +106,6 @@ MODULE_DEVICE_TABLE(of, mss_sc7180_match_table);
>
>  static struct platform_driver mss_sc7180_driver = {
>         .probe          = mss_sc7180_probe,
> -       .remove         = mss_sc7180_remove,
>         .driver         = {
>                 .name           = "sc7180-mss",
>                 .of_match_table = mss_sc7180_match_table,
> diff --git a/drivers/clk/qcom/q6sstop-qcs404.c b/drivers/clk/qcom/q6sstop-qcs404.c
> index 723f932fbf7d..507386bee07d 100644
> --- a/drivers/clk/qcom/q6sstop-qcs404.c
> +++ b/drivers/clk/qcom/q6sstop-qcs404.c
> @@ -159,15 +159,18 @@ static int q6sstopcc_qcs404_probe(struct platform_device *pdev)
>         const struct qcom_cc_desc *desc;
>         int ret;
>
> -       pm_runtime_enable(&pdev->dev);
> -       ret = pm_clk_create(&pdev->dev);
> +       ret = devm_pm_runtime_enable(&pdev->dev);
>         if (ret)
> -               goto disable_pm_runtime;
> +               return ret;
> +
> +       ret = devm_pm_clk_create(&pdev->dev);
> +       if (ret)
> +               return ret;
>
>         ret = pm_clk_add(&pdev->dev, NULL);
>         if (ret < 0) {
>                 dev_err(&pdev->dev, "failed to acquire iface clock\n");
> -               goto destroy_pm_clk;
> +               return ret;
>         }
>
>         q6sstop_regmap_config.name = "q6sstop_tcsr";
> @@ -175,30 +178,14 @@ static int q6sstopcc_qcs404_probe(struct platform_device *pdev)
>
>         ret = qcom_cc_probe_by_index(pdev, 1, desc);
>         if (ret)
> -               goto destroy_pm_clk;
> +               return ret;
>
>         q6sstop_regmap_config.name = "q6sstop_cc";
>         desc = &q6sstop_qcs404_desc;
>
>         ret = qcom_cc_probe_by_index(pdev, 0, desc);
>         if (ret)
> -               goto destroy_pm_clk;
> -
> -       return 0;
> -
> -destroy_pm_clk:
> -       pm_clk_destroy(&pdev->dev);
> -
> -disable_pm_runtime:
> -       pm_runtime_disable(&pdev->dev);
> -
> -       return ret;
> -}
> -
> -static int q6sstopcc_qcs404_remove(struct platform_device *pdev)
> -{
> -       pm_clk_destroy(&pdev->dev);
> -       pm_runtime_disable(&pdev->dev);
> +               return ret;
>
>         return 0;
>  }
> @@ -209,7 +196,6 @@ static const struct dev_pm_ops q6sstopcc_pm_ops = {
>
>  static struct platform_driver q6sstopcc_qcs404_driver = {
>         .probe          = q6sstopcc_qcs404_probe,
> -       .remove         = q6sstopcc_qcs404_remove,
>         .driver         = {
>                 .name   = "qcs404-q6sstopcc",
>                 .of_match_table = q6sstopcc_qcs404_match_table,
> diff --git a/drivers/clk/qcom/turingcc-qcs404.c b/drivers/clk/qcom/turingcc-qcs404.c
> index 4cfbbf5bf4d9..4543bda793f4 100644
> --- a/drivers/clk/qcom/turingcc-qcs404.c
> +++ b/drivers/clk/qcom/turingcc-qcs404.c
> @@ -110,36 +110,23 @@ static int turingcc_probe(struct platform_device *pdev)
>  {
>         int ret;
>
> -       pm_runtime_enable(&pdev->dev);
> -       ret = pm_clk_create(&pdev->dev);
> +       ret = devm_pm_runtime_enable(&pdev->dev);
>         if (ret)
> -               goto disable_pm_runtime;
> +               return ret;
> +
> +       ret = devm_pm_clk_create(&pdev->dev);
> +       if (ret)
> +               return ret;
>
>         ret = pm_clk_add(&pdev->dev, NULL);
>         if (ret < 0) {
>                 dev_err(&pdev->dev, "failed to acquire iface clock\n");
> -               goto destroy_pm_clk;
> +               return ret;
>         }
>
>         ret = qcom_cc_probe(pdev, &turingcc_desc);
>         if (ret < 0)
> -               goto destroy_pm_clk;
> -
> -       return 0;
> -
> -destroy_pm_clk:
> -       pm_clk_destroy(&pdev->dev);
> -
> -disable_pm_runtime:
> -       pm_runtime_disable(&pdev->dev);
> -
> -       return ret;
> -}
> -
> -static int turingcc_remove(struct platform_device *pdev)
> -{
> -       pm_clk_destroy(&pdev->dev);
> -       pm_runtime_disable(&pdev->dev);
> +               return ret;
>
>         return 0;
>  }
> @@ -156,7 +143,6 @@ MODULE_DEVICE_TABLE(of, turingcc_match_table);
>
>  static struct platform_driver turingcc_driver = {
>         .probe          = turingcc_probe,
> -       .remove         = turingcc_remove,
>         .driver         = {
>                 .name   = "qcs404-turingcc",
>                 .of_match_table = turingcc_match_table,
> --
> 2.30.2
>



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