linux-kernel - RE: [PATCH v5 1/2] thermal: Add thermal driver for Sunplus SP7021

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Date:   Tue, 22 Mar 2022 02:55:27 +0000
From:   Lh Kuo 郭力豪 <lh.Kuo@...plus.com>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>,
        Li-hao Kuo <lhjeff911@...il.com>,
        "rafael@...nel.org" <rafael@...nel.org>,
        "daniel.lezcano@...aro.org" <daniel.lezcano@...aro.org>,
        "amitk@...nel.org" <amitk@...nel.org>,
        "rui.zhang@...el.com" <rui.zhang@...el.com>,
        "robh+dt@...nel.org" <robh+dt@...nel.org>,
        "linux-pm@...r.kernel.org" <linux-pm@...r.kernel.org>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
CC:     Wells Lu 呂芳騰 <wells.lu@...plus.com>
Subject: RE: [PATCH v5 1/2] thermal: Add thermal driver for Sunplus SP7021

> > +	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> > +	if (IS_ERR(res))
> > +		return dev_err_probe(&pdev->dev, PTR_ERR(res), "resource get
> > +fail\n");
> > +
> > +	sp_data->regs = devm_ioremap(&pdev->dev, res->start, resource_size(res));
> > +	if (IS_ERR(sp_data->regs))
> > +		return dev_err_probe(&pdev->dev, PTR_ERR(sp_data->regs), "mas_base
> > +get fail\n");
> 
> Use devm_platform_ioremap_resource() instead.
>

Other drivers must also access these registers.
Warning when using devm_platform_ioremap_resource
Can I keep the original settings?