>
> This patch add the resource-managed function for devfreq-event device as
> following functions. The devm_devfreq_event_add_edev() manages automatically
> the memory of devfreq-event device using resource management.
> - devm_devfreq_event_add_edev()
> - devm_devfreq_event_remove_edev()
>
> Cc: Myungjoo Ham <myungjoo.ham@xxxxxxxxxxx>
> Cc: Kyungmin Park <kyungmin.park@xxxxxxxxxxx>
> Signed-off-by: Chanwoo Choi <cw00.choi@xxxxxxxxxxx>
> ---
> drivers/devfreq/devfreq-event.c | 63 +++++++++++++++++++++++++++++++++++++++++
> include/linux/devfreq-event.h | 16 +++++++++++
> 2 files changed, 79 insertions(+)
>
> diff --git a/drivers/devfreq/devfreq-event.c b/drivers/devfreq/devfreq-event.c
> index 64c1764..5301e2b 100644
> --- a/drivers/devfreq/devfreq-event.c
> +++ b/drivers/devfreq/devfreq-event.c
> @@ -451,6 +451,69 @@ int devfreq_event_remove_edev(struct devfreq_event_dev *edev)
> }
> EXPORT_SYMBOL_GPL(devfreq_event_remove_edev);
>
> +static int devm_devfreq_event_match(struct device *dev, void *res, void *data)
> +{
> + struct devfreq_event_dev **r = res;
> +
> + if (WARN_ON(!r || !*r))
> + return 0;
> +
> + return *r == data;
> +}
> +
> +static void devm_devfreq_event_release(struct device *dev, void *res)
> +{
> + devfreq_event_remove_edev(*(struct devfreq_event_dev **)res);
> +}
Isn't dev-free functions supposed to check if it is already freed or not?
> +
> +/**
> + * devm_devfreq_event_add_edev() - Resource-managed devfreq_event_add_edev()
> + * @dev : the device owning the devfreq-event device being created
> + * @desc : the devfreq-event device's decriptor which include essential
> + * data for devfreq-event device.
> + *
> + * Note that this function manages automatically the memory of devfreq-event
> + * device using device resource management and simplify the free operation
> + * for memory of devfreq-event device.
> + */
> +struct devfreq_event_dev *devm_devfreq_event_add_edev(struct device *dev,
> + struct devfreq_event_desc *desc)
> +{
> + struct devfreq_event_dev **ptr, *edev;
> +
> + ptr = devres_alloc(devm_devfreq_event_release, sizeof(*ptr), GFP_KERNEL);
> + if (!ptr)
> + return ERR_PTR(-ENOMEM);
> +
> + edev = devfreq_event_add_edev(dev, desc);
> + if (IS_ERR(edev)) {
> + devres_free(ptr);
> + return ERR_PTR(-ENOMEM);
> + }
> +
> + *ptr = edev;
> + devres_add(dev, ptr);
> +
> + return edev;
> +}
> +EXPORT_SYMBOL(devm_devfreq_event_add_edev);
You are using GPL Symbol in this function (devres_alloc).
> +
> +/**
> + * devm_devfreq_event_remove_edev()- Resource-managed devfreq_event_remove_edev()
> + * @dev : the device owning the devfreq-event device being created
> + * @edev : the devfreq-event device
> + *
> + * Note that this function manages automatically the memory of devfreq-event
> + * device using device resource management.
> + */
> +void devm_devfreq_event_remove_edev(struct device *dev,
> + struct devfreq_event_dev *edev)
> +{
> + WARN_ON(devres_release(dev, devm_devfreq_event_release,
> + devm_devfreq_event_match, edev));
> +}
> +EXPORT_SYMBOL(devm_devfreq_event_remove_edev);
Here you are using GPL symbol as well (devres_release).
[]
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