linux-kernel - Re: [PATCH 7/7] cpufreq: qcom-hw: Use devm_platform_ioremap

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Message-ID: <CAHLCerPKahfGmj_vuuMXzUkqNZq+DVBLxkYqi5Q-D4ae4=8jFQ@mail.gmail.com>
Date:   Tue, 8 Sep 2020 17:30:44 +0530
From:   Amit Kucheria <amitk@...nel.org>
To:     Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
Cc:     "Rafael J. Wysocki" <rjw@...ysocki.net>,
        Viresh Kumar <viresh.kumar@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Andy Gross <agross@...nel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Linux PM list <linux-pm@...r.kernel.org>,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@...r.kernel.org>, LKML <linux-kernel@...r.kernel.org>,
        linux-arm-msm <linux-arm-msm@...r.kernel.org>,
        Dmitry Baryshkov <dmitry.baryshkov@...aro.org>,
        Taniya Das <tdas@...eaurora.org>
Subject: Re: [PATCH 7/7] cpufreq: qcom-hw: Use devm_platform_ioremap_resource()
 to simplify code

On Tue, Sep 8, 2020 at 1:27 PM Manivannan Sadhasivam
<manivannan.sadhasivam@...aro.org> wrote:
>
> devm_platform_ioremap_resource() is the combination of
> platform_get_resource() and devm_ioremap_resource(). Hence, use it to
> simplify the code a bit.
>
> Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>

Reviewed-by: Amit Kucheria <amitk@...nel.org>

> ---
>  drivers/cpufreq/qcom-cpufreq-hw.c | 11 +++--------
>  1 file changed, 3 insertions(+), 8 deletions(-)
>
> diff --git a/drivers/cpufreq/qcom-cpufreq-hw.c b/drivers/cpufreq/qcom-cpufreq-hw.c
> index c3c397cc3dc6..6eeeb2bd4dfa 100644
> --- a/drivers/cpufreq/qcom-cpufreq-hw.c
> +++ b/drivers/cpufreq/qcom-cpufreq-hw.c
> @@ -307,7 +307,6 @@ static int qcom_cpufreq_hw_cpu_init(struct cpufreq_policy *policy)
>         struct of_phandle_args args;
>         struct device_node *cpu_np;
>         struct device *cpu_dev;
> -       struct resource *res;
>         void __iomem *base;
>         struct qcom_cpufreq_data *data;
>         const struct of_device_id *match;
> @@ -333,13 +332,9 @@ static int qcom_cpufreq_hw_cpu_init(struct cpufreq_policy *policy)
>
>         index = args.args[0];
>
> -       res = platform_get_resource(pdev, IORESOURCE_MEM, index);
> -       if (!res)
> -               return -ENODEV;
> -
> -       base = devm_ioremap(dev, res->start, resource_size(res));
> -       if (!base)
> -               return -ENOMEM;
> +       base = devm_platform_ioremap_resource(pdev, index);
> +       if (IS_ERR(base))
> +               return PTR_ERR(base);
>
>         data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
>         if (!data) {
> --
> 2.17.1
>