From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756136AbbAGXx4 (ORCPT ); Wed, 7 Jan 2015 18:53:56 -0500 Received: from mailout2.samsung.com ([203.254.224.25]:14015 "EHLO mailout2.samsung.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755557AbbAGXvX (ORCPT ); Wed, 7 Jan 2015 18:51:23 -0500 X-AuditID: cbfee691-f79b86d000004a5a-85-54adc67740d3 From: Chanwoo Choi To: myungjoo.ham@samsung.com, kgene@kernel.org Cc: kyungmin.park@samsung.com, rafael.j.wysocki@intel.com, mark.rutland@arm.com, a.kesavan@samsung.com, tomasz.figa@gmail.com, k.kozlowski@samsung.com, b.zolnierkie@samsung.com, robh+dt@kernel.org, cw00.choi@samsung.com, inki.dae@samsung.com, linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org Subject: [PATCHv7 03/10] devfreq: event: Add resource-managed function for devfreq-event device Date: Thu, 08 Jan 2015 08:51:10 +0900 Message-id: <1420674677-3077-4-git-send-email-cw00.choi@samsung.com> X-Mailer: git-send-email 1.8.5.5 In-reply-to: <1420674677-3077-1-git-send-email-cw00.choi@samsung.com> References: <1420674677-3077-1-git-send-email-cw00.choi@samsung.com> X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFupnkeLIzCtJLcpLzFFi42JZI2JSpFtxbG2IwQZvi8drFjNZbJyxntXi +pfnrBaT7k9gsXj9wtCi//FrZouzTW/YLTY9vsZqcXnXHDaLz71HGC1mnN/HZLH0+kUmi9uN K9gsHq94y27RuvcIu8WqXX8YHQQ81sxbw+ixc9Zddo/Fe14yeWxa1cnmsXlJvUffllWMHp83 yQWwR3HZpKTmZJalFunbJXBlbHhvX9CpWNGy8iVTA2ODTBcjJ4eEgInEtZ4rbBC2mMSFe+uB bC4OIYGljBIz3n1nhClaunwvC0RiEaPEh393oJwmJompi2ewg1SxCWhJ7H9xA2yUiICeROex PWBxZoE/TBJNm1hAbGGBRIkTf7aCTWURUJXYuqWbGcTmFXCR2Ha1kQlim4LEsuUzWUFsTgFX iaWbF4LVCAHVvOz5xQiyWELgJbvEy/WP2CAGCUh8m3wIaAEHUEJWYtMBZog5khIHV9xgmcAo vICRYRWjaGpBckFxUnqRqV5xYm5xaV66XnJ+7iZGYDyd/vds4g7G+wesDzEKcDAq8fAW9K0J EWJNLCuuzD3EaAq0YSKzlGhyPjBq80riDY3NjCxMTUyNjcwtzZTEeXWkfwYLCaQnlqRmp6YW pBbFF5XmpBYfYmTi4JRqYPQW9ueYcM70xeryKbnaTI1RTPdZX7DMOJW2dZe69t57d5o9rm1/ ePLpPu6Vtndfypatmb7BR97/xIuvVos6P6w4bfBOJ41vqvWHsI8z5i6s12v14fwh9aKz5N/r e4I8Cu8yL9hzL9DqPMar9umbgpH808nX7Oe2PZEy6D1mb3+vNO/gnyNXqr2UWIozEg21mIuK EwFGxTcWogIAAA== X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFrrFIsWRmVeSWpSXmKPExsVy+t9jAd3yY2tDDDb3mFg8XrOYyWLjjPWs Fte/PGe1mHR/AovF6xeGFv2PXzNbnG16w26x6fE1VovLu+awWXzuPcJoMeP8PiaLpdcvMlnc blzBZvF4xVt2i9a9R9gtVu36w+gg4LFm3hpGj52z7rJ7LN7zkslj06pONo/NS+o9+rasYvT4 vEkugD2qgdEmIzUxJbVIITUvOT8lMy/dVsk7ON453tTMwFDX0NLCXEkhLzE31VbJxSdA1y0z B+h4JYWyxJxSoFBAYnGxkr4dpgmhIW66FjCNEbq+IUFwPUYGaCBhDWPGhvf2BZ2KFS0rXzI1 MDbIdDFyckgImEgsXb6XBcIWk7hwbz1bFyMXh5DAIkaJD//usEA4TUwSUxfPYAepYhPQktj/ 4gYbiC0ioCfReWwPWJxZ4A+TRNMmsEnCAokSJ/5sZQSxWQRUJbZu6WYGsXkFXCS2XW1kgtim ILFs+UxWEJtTwFVi6eaFYDVCQDUve34xTmDkXcDIsIpRNLUguaA4KT3XSK84Mbe4NC9dLzk/ dxMjOF6fSe9gXNVgcYhRgINRiYe3oG9NiBBrYllxZe4hRgkOZiUR3rVta0OEeFMSK6tSi/Lj i0pzUosPMZoCXTWRWUo0OR+YSvJK4g2NTcyMLI3MDS2MjM2VxHmV7NtChATSE0tSs1NTC1KL YPqYODilGhhj99txrdrknvY0Z6fnkpPlRzykeoyjz61tfnzh1e/dribPl6Xz/vr7o2t3t2Zw s8T6MMGtz7yY9sw9GiMc97AgW6F030tn43AeHt78qbyn3V989duh83HN6cdrSptUL+dVfr1T 4vk7t2D3zUr2+qkv2bbJrf98bi6Pzz/JQwxRonPclq+0kNVUYinOSDTUYi4qTgQAEnDspe0C AAA= DLP-Filter: Pass X-MTR: 20000000000000000@CPGS X-CFilter-Loop: Reflected Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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 Cc: Kyungmin Park Signed-off-by: Chanwoo Choi --- 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); +} + +/** + * 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); + +/** + * 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); + /* * Device attributes for devfreq-event class. */ diff --git a/include/linux/devfreq-event.h b/include/linux/devfreq-event.h index 13a5703..3c44ad1 100644 --- a/include/linux/devfreq-event.h +++ b/include/linux/devfreq-event.h @@ -123,6 +123,10 @@ extern int devfreq_event_get_edev_count(struct device *dev); extern struct devfreq_event_dev *devfreq_event_add_edev(struct device *dev, struct devfreq_event_desc *desc); extern int devfreq_event_remove_edev(struct devfreq_event_dev *edev); +extern struct devfreq_event_dev *devm_devfreq_event_add_edev(struct device *dev, + struct devfreq_event_desc *desc); +extern void devm_devfreq_event_remove_edev(struct device *dev, + struct devfreq_event_dev *edev); #else static inline int devfreq_event_enable_edev(struct devfreq_event_dev *edev) @@ -184,6 +188,18 @@ static inline int devfreq_event_remove_edev(struct devfreq_event_dev *edev) { return -EINVAL; } + +static inline struct devfreq_event_dev *devm_devfreq_event_add_edev( + struct device *dev, + struct devfreq_event_desc *desc) +{ + return ERR_PTR(-EINVAL); +} + +static inline void devm_devfreq_event_remove_edev(struct device *dev, + struct devfreq_event_dev *edev) +{ +} #endif /* CONFIG_PM_DEVFREQ_EVENT */ #endif /* __LINUX_DEVFREQ_EVENT_H__ */ -- 1.8.5.5