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

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Date:   Tue, 8 Sep 2020 10:35:54 -0500
From:   Bjorn Andersson <bjorn.andersson@...aro.org>
To:     Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
Cc:     rjw@...ysocki.net, viresh.kumar@...aro.org, robh+dt@...nel.org,
        agross@...nel.org, amitk@...nel.org, linux-pm@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-msm@...r.kernel.org, dmitry.baryshkov@...aro.org,
        tdas@...eaurora.org
Subject: Re: [PATCH 7/7] cpufreq: qcom-hw: Use
 devm_platform_ioremap_resource() to simplify code

On Tue 08 Sep 02:57 CDT 2020, Manivannan Sadhasivam 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.
> 

Reviewed-by: Bjorn Andersson <bjorn.andersson@...aro.org>

> Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@...aro.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
>