[PATCH v5 10/13] power: supply: mt6370: Add MediaTek MT6370 charger driver

[Andy Shevchenko]

On Fri, Jul 15, 2022 at 1:29 PM ChiaEn Wu <peterwu.pub at gmail.com> wrote:
>
> From: ChiaEn Wu <chiaen_wu at richtek.com>
>
> MediaTek MT6370 is a SubPMIC consisting of a single cell battery charger
> with ADC monitoring, RGB LEDs, dual channel flashlight, WLED backlight
> driver, display bias voltage supply, one general purpose LDO, and the
> USB Type-C & PD controller complies with the latest USB Type-C and PD
> standards.
>
> This adds MediaTek MT6370 Charger driver support. The charger module
> of MT6370 supports High-Accuracy Voltage/Current Regulation,
> Average Input Current Regulation, Battery Temperature Sensing,
> Over-Temperature Protection, DPDM Detection for BC1.2.

...

> +static int mt6370_chg_probe(struct platform_device *pdev)
> +{
> +       int ret;
> +       struct mt6370_priv *priv;
> +
> +       priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
> +       if (!priv)
> +               return -ENOMEM;
> +
> +       priv->dev = &pdev->dev;
> +
> +       priv->regmap = dev_get_regmap(pdev->dev.parent, NULL);
> +       if (!priv->regmap)
> +               return dev_err_probe(&pdev->dev, -ENODEV,
> +                                    "Failed to get regmap\n");
> +
> +       ret = mt6370_chg_init_rmap_fields(priv);
> +       if (ret)
> +               return dev_err_probe(&pdev->dev, ret,
> +                                    "Failed to init regmap fields\n");
> +
> +       platform_set_drvdata(pdev, priv);
> +
> +       priv->iio_adcs = devm_iio_channel_get_all(priv->dev);
> +       if (IS_ERR(priv->iio_adcs))
> +               return dev_err_probe(&pdev->dev, PTR_ERR(priv->iio_adcs),
> +                                    "Failed to get iio adc\n");
> +
> +       ret = mt6370_chg_init_otg_regulator(priv);
> +       if (ret)
> +               return dev_err_probe(&pdev->dev, ret,
> +                                    "Failed to init otg regulator\n");
> +
> +       ret = mt6370_chg_init_psy(priv);
> +       if (ret)
> +               return dev_err_probe(&pdev->dev, ret, "Failed to init psy\n");
> +
> +       mutex_init(&priv->attach_lock);
> +       priv->attach = MT6370_ATTACH_STAT_DETACH;
> +
> +       priv->wq = create_singlethread_workqueue(dev_name(priv->dev));
> +       if (IS_ERR(priv->wq))

> +               return dev_err_probe(priv->dev, PTR_ERR(priv->wq),
> +                                    "Failed to create workqueue\n");

You need either wrap mutex to be deallocated by devm or don't use
dev_err_probe() here.

> +       INIT_WORK(&priv->bc12_work, mt6370_chg_bc12_work_func);
> +       INIT_DELAYED_WORK(&priv->mivr_dwork, mt6370_chg_mivr_dwork_func);
> +
> +       ret = mt6370_chg_init_setting(priv);
> +       if (ret) {
> +               dev_err(&pdev->dev, "Failed to init mt6370 charger setting\n");
> +               goto probe_out;
> +       }
> +
> +       ret = mt6370_chg_init_irq(priv);
> +       if (ret)
> +               goto probe_out;
> +
> +       mt6370_chg_pwr_rdy_check(priv);
> +
> +       return 0;
> +
> +probe_out:
> +       cancel_delayed_work_sync(&priv->mivr_dwork);
> +       flush_workqueue(priv->wq);
> +       destroy_workqueue(priv->wq);
> +       mutex_destroy(&priv->attach_lock);
> +
> +       return ret;
> +}
> +
> +static int mt6370_chg_remove(struct platform_device *pdev)
> +{
> +       struct mt6370_priv *priv = platform_get_drvdata(pdev);
> +
> +       cancel_delayed_work_sync(&priv->mivr_dwork);
> +       flush_workqueue(priv->wq);
> +       destroy_workqueue(priv->wq);
> +       mutex_destroy(&priv->attach_lock);
> +
> +       return 0;
> +}


-- 
With Best Regards,
Andy Shevchenko