From patchwork Mon Jan 12 12:34:50 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chanwoo Choi X-Patchwork-Id: 5610111 Return-Path: X-Original-To: patchwork-linux-pm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id C3D78C058D for ; Mon, 12 Jan 2015 12:39:25 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id D377120394 for ; Mon, 12 Jan 2015 12:39:24 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id D1AC220383 for ; Mon, 12 Jan 2015 12:39:23 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752763AbbALMjB (ORCPT ); Mon, 12 Jan 2015 07:39:01 -0500 Received: from mailout1.samsung.com ([203.254.224.24]:12725 "EHLO mailout1.samsung.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752416AbbALMfF (ORCPT ); Mon, 12 Jan 2015 07:35:05 -0500 Received: from epcpsbgr2.samsung.com (u142.gpu120.samsung.co.kr [203.254.230.142]) by mailout1.samsung.com (Oracle Communications Messaging Server 7u4-24.01 (7.0.4.24.0) 64bit (built Nov 17 2011)) with ESMTP id <0NI200294DMDRS40@mailout1.samsung.com>; Mon, 12 Jan 2015 21:35:01 +0900 (KST) Received: from epcpsbgm1.samsung.com ( [172.20.52.114]) by epcpsbgr2.samsung.com (EPCPMTA) with SMTP id 04.FA.11124.47FB3B45; Mon, 12 Jan 2015 21:35:01 +0900 (KST) X-AuditID: cbfee68e-f79b46d000002b74-77-54b3bf744608 Received: from epmmp1.local.host ( [203.254.227.16]) by epcpsbgm1.samsung.com (EPCPMTA) with SMTP id CD.F1.20081.47FB3B45; Mon, 12 Jan 2015 21:35:00 +0900 (KST) Received: from chan.10.32.193.11 ([10.252.81.195]) by mmp1.samsung.com (Oracle Communications Messaging Server 7u4-24.01 (7.0.4.24.0) 64bit (built Nov 17 2011)) with ESMTPA id <0NI2007ZZDMC9Q10@mmp1.samsung.com>; Mon, 12 Jan 2015 21:35:00 +0900 (KST) 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: [PATCHv8 2/9] devfreq: event: Add resource-managed function for devfreq-event device Date: Mon, 12 Jan 2015 21:34:50 +0900 Message-id: <1421066097-26237-3-git-send-email-cw00.choi@samsung.com> X-Mailer: git-send-email 1.8.5.5 In-reply-to: <1421066097-26237-1-git-send-email-cw00.choi@samsung.com> References: <1421066097-26237-1-git-send-email-cw00.choi@samsung.com> X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFupnkeLIzCtJLcpLzFFi42JZI2JSpFu6f3OIwSFVi8drFjNZbJyxntXi +pfnrBaT7k9gsXj9wtCi//FrZouzTW/YLTY9vsZqcXnXHDaLz71HGC1mnN/HZLH0+kUmi9uN K9gsHq94y27RuvcIu8WqXX8YHQQ81sxbw+ixc9Zddo/Fe14yeWxa1cnmsXlJvUffllWMHp83 yQWwR3HZpKTmZJalFunbJXBlfDh+lbFgomJF1+OZjA2MHTJdjJwcEgImEgt7rjND2GISF+6t Z+ti5OIQEljKKDF5yl12mKLtp7uZIBKLGCX2P2hnh3CamCRu9l5kAqliE9CS2P/iBhuILSKg J9F5bA9YN7PAHyaJpk0sILawQLzEy+/XwNaxCKhKTLi1EqyeV8BVYs6DKSwQ2xQkli2fyQpi cwq4SbzbvQaohgNomavEjfX1IHslBF6yS/xZ28wKMUdA4tvkQywgNRICshKbDkB9IylxcMUN lgmMwgsYGVYxiqYWJBcUJ6UXGekVJ+YWl+al6yXn525iBMbT6X/P+nYw3jxgfYhRgINRiYfX QmpziBBrYllxZe4hRlOgDROZpUST84FRm1cSb2hsZmRhamJqbGRuaaYkzpsg9TNYSCA9sSQ1 OzW1ILUovqg0J7X4ECMTB6dUAyNfUv1uresNvfc0OHfW+WwoYjx4bNazi68S2Hv5Vhn7hj4U jEi9Ui29/I7Vg5/NTkE1as98bVfmeCrkTtWt8CxNz7bnX2XIpyBiIXi8cpb66v+3zlqU5yg5 ek01XhcmxNmxTOjbR76eG/u2fzqx6cQO3cpt18NWHXGcY+kSpHtyypPJHZ0Bf5VYijMSDbWY i4oTAa6/BXmiAgAA X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFrrFIsWRmVeSWpSXmKPExsVy+t9jAd2S/ZtDDBo+mVg8XrOYyWLjjPWs Fte/PGe1mHR/AovF6xeGFv2PXzNbnG16w26x6fE1VovLu+awWXzuPcJoMeP8PiaLpdcvMlnc blzBZvF4xVt2i9a9R9gtVu36w+gg4LFm3hpGj52z7rJ7LN7zkslj06pONo/NS+o9+rasYvT4 vEkugD2qgdEmIzUxJbVIITUvOT8lMy/dVsk7ON453tTMwFDX0NLCXEkhLzE31VbJxSdA1y0z B+h4JYWyxJxSoFBAYnGxkr4dpgmhIW66FjCNEbq+IUFwPUYGaCBhDWPGh+NXGQsmKlZ0PZ7J 2MDYIdPFyMkhIWAisf10NxOELSZx4d56ti5GLg4hgUWMEvsftLNDOE1MEjd7L4JVsQloSex/ cYMNxBYR0JPoPLaHHcRmFvjDJNG0iQXEFhaIl3j5/RoziM0ioCox4dZKsHpeAVeJOQ+msEBs U5BYtnwmK4jNKeAm8W73GqAaDqBlrhI31tdPYORdwMiwilE0tSC5oDgpPddQrzgxt7g0L10v OT93EyM4Xp9J7WBc2WBxiFGAg1GJh9dCanOIEGtiWXFl7iFGCQ5mJRFe1zKgEG9KYmVValF+ fFFpTmrxIUZToKMmMkuJJucDU0leSbyhsYmZkaWRuaGFkbG5kjivkn1biJBAemJJanZqakFq EUwfEwenVAPj6RMm2d4FbROXdkwzmdHzbmrM9IB9njM3VdVwTy76qMD8l/nKz5oo/hWr6vZq fOUP0uy7kR86/WiY7v1Xa+7sV920zXbuVqYnG87Kqq15l6V61PFobMI771+tzoKTRHfkpjfV eFl3PNY3mTfjZcRSq8tNk65LRrxYE9cUJbJ4Rf7CC9kOKtzXlFiKMxINtZiLihMBGAERx+0C AAA= DLP-Filter: Pass X-MTR: 20000000000000000@CPGS X-CFilter-Loop: Reflected Sender: linux-pm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP 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 9ba5ba4..57529af 100644 --- a/drivers/devfreq/devfreq-event.c +++ b/drivers/devfreq/devfreq-event.c @@ -389,6 +389,69 @@ 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_GPL(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_GPL(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 b7363f5..b6e3afa 100644 --- a/include/linux/devfreq-event.h +++ b/include/linux/devfreq-event.h @@ -106,6 +106,10 @@ 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) @@ -165,6 +169,18 @@ 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__ */