linux-kernel - Re: [PATCH v3] cpufreq: kryo: Add module remove and exit

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Date:   Thu, 21 Jun 2018 15:23:11 +0200
From:   "Rafael J. Wysocki" <rjw@...ysocki.net>
To:     Viresh Kumar <viresh.kumar@...aro.org>, ilia.lin@...il.com
Cc:     linux-pm@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3] cpufreq: kryo: Add module remove and exit

On Monday, June 18, 2018 6:55:50 AM CEST Viresh Kumar wrote:
> On 17-06-18, 22:01, ilia.lin@...il.com wrote:
> > From: Ilia Lin <ilia.lin@...il.com>
> > 
> > Add device remove and module exit code to make the driver
> > functioning as a loadable module.
> > 
> > Fixes: ac28927659be (cpufreq: kryo: allow building as a loadable module)
> > Signed-off-by: Ilia Lin <ilia.lin@...il.com>
> > ---
> >  drivers/cpufreq/qcom-cpufreq-kryo.c | 22 +++++++++++++++++++---
> >  1 file changed, 19 insertions(+), 3 deletions(-)
> > 
> > diff --git a/drivers/cpufreq/qcom-cpufreq-kryo.c b/drivers/cpufreq/qcom-cpufreq-kryo.c
> > index 74b9b93d511b..01bddacf5c3b 100644
> > --- a/drivers/cpufreq/qcom-cpufreq-kryo.c
> > +++ b/drivers/cpufreq/qcom-cpufreq-kryo.c
> > @@ -42,6 +42,8 @@ enum _msm8996_version {
> >  	NUM_OF_MSM8996_VERSIONS,
> >  };
> >  
> > +struct platform_device *cpufreq_dt_pdev, *kryo_cpufreq_pdev;
> > +
> >  static enum _msm8996_version __init qcom_cpufreq_kryo_get_msm_id(void)
> >  {
> >  	size_t len;
> > @@ -74,7 +76,6 @@ static enum _msm8996_version __init qcom_cpufreq_kryo_get_msm_id(void)
> >  static int qcom_cpufreq_kryo_probe(struct platform_device *pdev)
> >  {
> >  	struct opp_table *opp_tables[NR_CPUS] = {0};
> > -	struct platform_device *cpufreq_dt_pdev;
> >  	enum _msm8996_version msm8996_version;
> >  	struct nvmem_cell *speedbin_nvmem;
> >  	struct device_node *np;
> > @@ -165,8 +166,15 @@ static int qcom_cpufreq_kryo_probe(struct platform_device *pdev)
> >  	return ret;
> >  }
> >  
> > +static int qcom_cpufreq_kryo_remove(struct platform_device *pdev)
> > +{
> > +	platform_device_unregister(cpufreq_dt_pdev);
> > +	return 0;
> > +}
> > +
> >  static struct platform_driver qcom_cpufreq_kryo_driver = {
> >  	.probe = qcom_cpufreq_kryo_probe,
> > +	.remove = qcom_cpufreq_kryo_remove,
> >  	.driver = {
> >  		.name = "qcom-cpufreq-kryo",
> >  	},
> > @@ -201,8 +209,9 @@ static int __init qcom_cpufreq_kryo_init(void)
> >  	if (unlikely(ret < 0))
> >  		return ret;
> >  
> > -	ret = PTR_ERR_OR_ZERO(platform_device_register_simple(
> > -		"qcom-cpufreq-kryo", -1, NULL, 0));
> > +	kryo_cpufreq_pdev = platform_device_register_simple(
> > +		"qcom-cpufreq-kryo", -1, NULL, 0);
> > +	ret = PTR_ERR_OR_ZERO(kryo_cpufreq_pdev);
> >  	if (0 == ret)
> >  		return 0;
> >  
> > @@ -211,5 +220,12 @@ static int __init qcom_cpufreq_kryo_init(void)
> >  }
> >  module_init(qcom_cpufreq_kryo_init);
> >  
> > +static void __init qcom_cpufreq_kryo_exit(void)
> > +{
> > +	platform_device_unregister(kryo_cpufreq_pdev);
> > +	platform_driver_unregister(&qcom_cpufreq_kryo_driver);
> > +}
> > +module_exit(qcom_cpufreq_kryo_exit);
> > +
> >  MODULE_DESCRIPTION("Qualcomm Technologies, Inc. Kryo CPUfreq driver");
> >  MODULE_LICENSE("GPL v2");
> 
> Acked-by: Viresh Kumar <viresh.kumar@...aro.org>

Patch applied, thanks!