From patchwork Mon Mar 21 23:36:17 2011 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Rafael Wysocki X-Patchwork-Id: 651471 Received: from smtp1.linux-foundation.org (smtp1.linux-foundation.org [140.211.169.13]) by demeter1.kernel.org (8.14.4/8.14.3) with ESMTP id p2M08PtY004255 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=FAIL) for ; Tue, 22 Mar 2011 00:08:45 GMT Received: from daredevil.linux-foundation.org (localhost [127.0.0.1]) by smtp1.linux-foundation.org (8.14.2/8.13.5/Debian-3ubuntu1.1) with ESMTP id p2M05v61000829; Mon, 21 Mar 2011 17:06:25 -0700 Received: from ogre.sisk.pl (ogre.sisk.pl [217.79.144.158]) by smtp1.linux-foundation.org (8.14.2/8.13.5/Debian-3ubuntu1.1) with ESMTP id p2LNdBul029114; Mon, 21 Mar 2011 16:39:12 -0700 Received: from localhost (localhost.localdomain [127.0.0.1]) by ogre.sisk.pl (Postfix) with ESMTP id 17CAE1A8A69; Tue, 22 Mar 2011 00:23:38 +0100 (CET) Received: from ogre.sisk.pl ([127.0.0.1]) by localhost (ogre.sisk.pl [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 22019-08; Tue, 22 Mar 2011 00:23:16 +0100 (CET) Received: from ferrari.rjw.lan (220-bem-13.acn.waw.pl [82.210.184.220]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by ogre.sisk.pl (Postfix) with ESMTP id 594801A89DF; Tue, 22 Mar 2011 00:23:07 +0100 (CET) From: "Rafael J. Wysocki" To: Linux PM mailing list , "H. Peter Anvin" Date: Tue, 22 Mar 2011 00:36:17 +0100 User-Agent: KMail/1.13.6 (Linux/2.6.38+; KDE/4.6.0; x86_64; ; ) References: <201103100131.58206.rjw@sisk.pl> <201103122212.40828.rjw@sisk.pl> <201103220031.22729.rjw@sisk.pl> In-Reply-To: <201103220031.22729.rjw@sisk.pl> MIME-Version: 1.0 Message-Id: <201103220036.17824.rjw@sisk.pl> X-Virus-Scanned: amavisd-new at ogre.sisk.pl using MkS_Vir for Linux Received-SPF: pass (localhost is always allowed.) X-Spam-Status: No, hits=-3.943 required=5 tests=AWL, BAYES_00, OSDL_HEADER_SUBJECT_BRACKETED X-Spam-Checker-Version: SpamAssassin 3.2.4-osdl_revision__1.47__ X-MIMEDefang-Filter: lf$Revision: 1.188 $ X-Scanned-By: MIMEDefang 2.63 on 140.211.169.21 Cc: kvm@vger.kernel.org, Greg KH , LKML , cpufreq@vger.kernel.org, iommu@lists.linux-foundation.org, mingo@redhat.com, Avi Kivity , Kay Sievers , tglx@linutronix.de, David Woodhouse Subject: [linux-pm] [PATCH 3/6] PCI / Intel IOMMU: Use syscore_ops instead of sysdev class and sysdev X-BeenThere: linux-pm@lists.linux-foundation.org X-Mailman-Version: 2.1.9 Precedence: list List-Id: Linux power management List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: linux-pm-bounces@lists.linux-foundation.org Errors-To: linux-pm-bounces@lists.linux-foundation.org X-Greylist: IP, sender and recipient auto-whitelisted, not delayed by milter-greylist-4.2.6 (demeter1.kernel.org [140.211.167.41]); Tue, 22 Mar 2011 00:08:45 +0000 (UTC) Index: linux-2.6/drivers/pci/intel-iommu.c =================================================================== --- linux-2.6.orig/drivers/pci/intel-iommu.c +++ linux-2.6/drivers/pci/intel-iommu.c @@ -36,7 +36,7 @@ #include #include #include -#include +#include #include #include #include @@ -3135,7 +3135,7 @@ static void iommu_flush_all(void) } } -static int iommu_suspend(struct sys_device *dev, pm_message_t state) +static int iommu_suspend(void) { struct dmar_drhd_unit *drhd; struct intel_iommu *iommu = NULL; @@ -3175,7 +3175,7 @@ nomem: return -ENOMEM; } -static int iommu_resume(struct sys_device *dev) +static void iommu_resume(void) { struct dmar_drhd_unit *drhd; struct intel_iommu *iommu = NULL; @@ -3183,7 +3183,7 @@ static int iommu_resume(struct sys_devic if (init_iommu_hw()) { WARN(1, "IOMMU setup failed, DMAR can not resume!\n"); - return -EIO; + return; } for_each_active_iommu(iommu, drhd) { @@ -3204,40 +3204,20 @@ static int iommu_resume(struct sys_devic for_each_active_iommu(iommu, drhd) kfree(iommu->iommu_state); - - return 0; } -static struct sysdev_class iommu_sysclass = { - .name = "iommu", +static struct syscore_ops iommu_syscore_ops = { .resume = iommu_resume, .suspend = iommu_suspend, }; -static struct sys_device device_iommu = { - .cls = &iommu_sysclass, -}; - -static int __init init_iommu_sysfs(void) +static void __init init_iommu_pm_ops(void) { - int error; - - error = sysdev_class_register(&iommu_sysclass); - if (error) - return error; - - error = sysdev_register(&device_iommu); - if (error) - sysdev_class_unregister(&iommu_sysclass); - - return error; + register_syscore_ops(&iommu_syscore_ops); } #else -static int __init init_iommu_sysfs(void) -{ - return 0; -} +static inline int init_iommu_pm_ops(void) { } #endif /* CONFIG_PM */ /* @@ -3320,7 +3300,7 @@ int __init intel_iommu_init(void) #endif dma_ops = &intel_dma_ops; - init_iommu_sysfs(); + init_iommu_pm_ops(); register_iommu(&intel_iommu_ops);