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

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Date:   Tue, 8 Sep 2020 16:42:34 +0530
From:   Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
To:     Viresh Kumar <viresh.kumar@...aro.org>
Cc:     rjw@...ysocki.net, robh+dt@...nel.org, agross@...nel.org,
        bjorn.andersson@...aro.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 0908, Viresh Kumar wrote:
> On 08-09-20, 13:27, 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.
> > 
> > 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) {
> 
> Keep such patches at the top, so they could be independently applied.
> 

Okay.

Thanks,
Mani

> -- 
> viresh