diff options
Diffstat (limited to 'drivers/devfreq')
| -rw-r--r-- | drivers/devfreq/devfreq.c | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/drivers/devfreq/devfreq.c b/drivers/devfreq/devfreq.c index 8b6295d9d1f..9f90369dd6b 100644 --- a/drivers/devfreq/devfreq.c +++ b/drivers/devfreq/devfreq.c @@ -1169,6 +1169,54 @@ int devfreq_unregister_opp_notifier(struct device *dev, struct devfreq *devfreq) return ret; } +static void devm_devfreq_opp_release(struct device *dev, void *res) +{ + devfreq_unregister_opp_notifier(dev, *(struct devfreq **)res); +} + +/** + * devm_ devfreq_register_opp_notifier() + * - Resource-managed devfreq_register_opp_notifier() + * @dev: The devfreq user device. (parent of devfreq) + * @devfreq: The devfreq object. + */ +int devm_devfreq_register_opp_notifier(struct device *dev, + struct devfreq *devfreq) +{ + struct devfreq **ptr; + int ret; + + ptr = devres_alloc(devm_devfreq_opp_release, sizeof(*ptr), GFP_KERNEL); + if (!ptr) + return -ENOMEM; + + ret = devfreq_register_opp_notifier(dev, devfreq); + if (ret) { + devres_free(ptr); + return ret; + } + + *ptr = devfreq; + devres_add(dev, ptr); + + return 0; +} +EXPORT_SYMBOL(devm_devfreq_register_opp_notifier); + +/** + * devm_devfreq_unregister_opp_notifier() + * - Resource-managed devfreq_unregister_opp_notifier() + * @dev: The devfreq user device. (parent of devfreq) + * @devfreq: The devfreq object. + */ +void devm_devfreq_unregister_opp_notifier(struct device *dev, + struct devfreq *devfreq) +{ + WARN_ON(devres_release(dev, devm_devfreq_opp_release, + devm_devfreq_dev_match, devfreq)); +} +EXPORT_SYMBOL(devm_devfreq_unregister_opp_notifier); + MODULE_AUTHOR("MyungJoo Ham <myungjoo.ham@samsung.com>"); MODULE_DESCRIPTION("devfreq class support"); MODULE_LICENSE("GPL"); |