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SubjectRe: [PATCH v2] cpufreq: kryo: Add module remove and exit
On 14-06-18, 22:42, ilia.lin@gmail.com wrote:
> From: Ilia Lin <ilia.lin@gmail.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@gmail.com>
> ---
> drivers/cpufreq/qcom-cpufreq-kryo.c | 23 ++++++++++++++++++++---
> 1 file changed, 20 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/cpufreq/qcom-cpufreq-kryo.c b/drivers/cpufreq/qcom-cpufreq-kryo.c
> index 5e9511223ce9..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;
> @@ -129,6 +130,7 @@ static int qcom_cpufreq_kryo_probe(struct platform_device *pdev)
> BUG();
> break;
> }
> + kfree(speedbin);

Again, stuff like this can't go in this patch itself. It is a separate
bug fix and you should send it with a matching fixes tag separately.

>
> for_each_possible_cpu(cpu) {
> cpu_dev = get_cpu_device(cpu);
> @@ -164,8 +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",
> },
> @@ -200,8 +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;
>
> @@ -210,5 +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");
> --
> 2.11.0

--
viresh

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