From patchwork Fri Feb 11 23:28:34 2011 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Rafael Wysocki X-Patchwork-Id: 551061 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 p1BNVaVH001618 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=FAIL) for ; Fri, 11 Feb 2011 23:31:57 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 p1BNT7vG020860; Fri, 11 Feb 2011 15:29:08 -0800 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 p1BNT479020849 for ; Fri, 11 Feb 2011 15:29:05 -0800 Received: from localhost (localhost.localdomain [127.0.0.1]) by ogre.sisk.pl (Postfix) with ESMTP id 90C1619DB11; Sat, 12 Feb 2011 00:25:49 +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 17843-01; Sat, 12 Feb 2011 00:25:29 +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 0E0DD199361; Sat, 12 Feb 2011 00:25:29 +0100 (CET) From: "Rafael J. Wysocki" To: Linux PM mailing list Date: Sat, 12 Feb 2011 00:28:34 +0100 User-Agent: KMail/1.13.5 (Linux/2.6.38-rc4+; KDE/4.4.4; x86_64; ; ) MIME-Version: 1.0 Message-Id: <201102120028.34666.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=-5.442 required=5 tests=AWL, BAYES_00, OSDL_HEADER_SUBJECT_BRACKETED, PATCH_SUBJECT_OSDL 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: LKML , ACPI Devel Mailing List , "H. Peter Anvin" , Ingo Molnar , Thomas Gleixner Subject: [linux-pm] [PATCH] PM: Drop pm_flags that is not necessary 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]); Fri, 11 Feb 2011 23:31:57 +0000 (UTC) Index: linux-2.6/arch/x86/kernel/apm_32.c =================================================================== --- linux-2.6.orig/arch/x86/kernel/apm_32.c +++ linux-2.6/arch/x86/kernel/apm_32.c @@ -227,6 +227,7 @@ #include #include #include +#include #include #include @@ -2331,12 +2332,11 @@ static int __init apm_init(void) apm_info.disabled = 1; return -ENODEV; } - if (pm_flags & PM_ACPI) { + if (!acpi_disabled) { printk(KERN_NOTICE "apm: overridden by ACPI.\n"); apm_info.disabled = 1; return -ENODEV; } - pm_flags |= PM_APM; /* * Set up the long jump entry point to the APM BIOS, which is called @@ -2428,7 +2428,6 @@ static void __exit apm_exit(void) kthread_stop(kapmd_task); kapmd_task = NULL; } - pm_flags &= ~PM_APM; } module_init(apm_init); Index: linux-2.6/include/linux/pm.h =================================================================== --- linux-2.6.orig/include/linux/pm.h +++ linux-2.6/include/linux/pm.h @@ -563,15 +563,6 @@ enum dpm_order { DPM_ORDER_DEV_LAST, }; -/* - * Global Power Management flags - * Used to keep APM and ACPI from both being active - */ -extern unsigned int pm_flags; - -#define PM_APM 1 -#define PM_ACPI 2 - extern int pm_generic_suspend(struct device *dev); extern int pm_generic_resume(struct device *dev); extern int pm_generic_freeze(struct device *dev); Index: linux-2.6/include/linux/suspend.h =================================================================== --- linux-2.6.orig/include/linux/suspend.h +++ linux-2.6/include/linux/suspend.h @@ -272,9 +272,6 @@ extern int unregister_pm_notifier(struct register_pm_notifier(&fn##_nb); \ } -extern bool pm_apm_enabled(void); -extern void pm_set_acpi_flag(void); - /* drivers/base/power/wakeup.c */ extern bool events_check_enabled; @@ -295,9 +292,6 @@ static inline int unregister_pm_notifier #define pm_notifier(fn, pri) do { (void)(fn); } while (0) -static inline bool pm_apm_enabled(void) { return false; } -static inline void pm_set_acpi_flag(void) {} - static inline bool pm_wakeup_pending(void) { return false; } #endif /* !CONFIG_PM_SLEEP */ Index: linux-2.6/kernel/power/main.c =================================================================== --- linux-2.6.orig/kernel/power/main.c +++ linux-2.6/kernel/power/main.c @@ -19,19 +19,6 @@ DEFINE_MUTEX(pm_mutex); #ifdef CONFIG_PM_SLEEP -unsigned int pm_flags; -EXPORT_SYMBOL(pm_flags); - -bool pm_apm_enabled(void) -{ - return !!(pm_flags & PM_APM); -} - -void pm_set_acpi_flag(void) -{ - pm_flags |= PM_ACPI; -} - /* Routines for PM-transition notifications */ static BLOCKING_NOTIFIER_HEAD(pm_chain_head); Index: linux-2.6/drivers/acpi/bus.c =================================================================== --- linux-2.6.orig/drivers/acpi/bus.c +++ linux-2.6/drivers/acpi/bus.c @@ -1007,8 +1007,7 @@ struct kobject *acpi_kobj; static int __init acpi_init(void) { - int result = 0; - + int result; if (acpi_disabled) { printk(KERN_INFO PREFIX "Interpreter disabled.\n"); @@ -1023,29 +1022,18 @@ static int __init acpi_init(void) init_acpi_device_notify(); result = acpi_bus_init(); - - if (!result) { - pci_mmcfg_late_init(); - if (pm_apm_enabled()) { - printk(KERN_INFO PREFIX - "APM is already active, exiting\n"); - disable_acpi(); - result = -ENODEV; - } else { - pm_set_acpi_flag(); - } - } else + if (result) { disable_acpi(); - - if (acpi_disabled) return result; + } + pci_mmcfg_late_init(); acpi_scan_init(); acpi_ec_init(); acpi_debugfs_init(); acpi_sleep_proc_init(); acpi_wakeup_device_init(); - return result; + return 0; } subsys_initcall(acpi_init);