From patchwork Wed Oct 6 22:48:20 2010 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Rafael Wysocki X-Patchwork-Id: 237301 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by demeter1.kernel.org (8.14.4/8.14.3) with ESMTP id o96MnlNj001348 for ; Wed, 6 Oct 2010 22:49:48 GMT Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1760005Ab0JFWta (ORCPT ); Wed, 6 Oct 2010 18:49:30 -0400 Received: from ogre.sisk.pl ([217.79.144.158]:51559 "EHLO ogre.sisk.pl" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1760003Ab0JFWt3 (ORCPT ); Wed, 6 Oct 2010 18:49:29 -0400 Received: from localhost (localhost.localdomain [127.0.0.1]) by ogre.sisk.pl (Postfix) with ESMTP id 52215192E2C; Thu, 7 Oct 2010 00:49:30 +0200 (CEST) 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 30383-09; Thu, 7 Oct 2010 00:49:09 +0200 (CEST) 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 F17C7192099; Thu, 7 Oct 2010 00:49:08 +0200 (CEST) From: "Rafael J. Wysocki" To: ACPI Devel Maling List Subject: [PATCH] ACPI / PM: Fix problems with acpi_pm_device_sleep_state() Date: Thu, 7 Oct 2010 00:48:20 +0200 User-Agent: KMail/1.13.5 (Linux/2.6.36-rc6-rjw+; KDE/4.4.4; x86_64; ; ) Cc: Len Brown , Matthew Garrett , Jesse Barnes , "Linux-pm mailing list" , "linux-pci@vger.kernel.org" MIME-Version: 1.0 Message-Id: <201010070048.20890.rjw@sisk.pl> X-Virus-Scanned: amavisd-new at ogre.sisk.pl using MkS_Vir for Linux Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org X-Greylist: IP, sender and recipient auto-whitelisted, not delayed by milter-greylist-4.2.3 (demeter1.kernel.org [140.211.167.41]); Wed, 06 Oct 2010 22:49:48 +0000 (UTC) Index: linux-2.6/drivers/acpi/sleep.c =================================================================== --- linux-2.6.orig/drivers/acpi/sleep.c +++ linux-2.6/drivers/acpi/sleep.c @@ -27,6 +27,8 @@ u8 sleep_states[ACPI_S_STATE_COUNT]; +static u32 acpi_target_sleep_state = ACPI_STATE_S0; + static void acpi_sleep_tts_switch(u32 acpi_state) { union acpi_object in_arg = { ACPI_TYPE_INTEGER }; @@ -79,8 +81,6 @@ static int acpi_sleep_prepare(u32 acpi_s } #ifdef CONFIG_ACPI_SLEEP -static u32 acpi_target_sleep_state = ACPI_STATE_S0; - /* * The ACPI specification wants us to save NVS memory regions during hibernation * and to restore them during the subsequent resume. Windows does that also for @@ -562,7 +562,7 @@ int acpi_suspend(u32 acpi_state) return -EINVAL; } -#ifdef CONFIG_PM_SLEEP +#ifdef CONFIG_PM_OPS /** * acpi_pm_device_sleep_state - return preferred power state of ACPI device * in the system sleep state given by %acpi_target_sleep_state @@ -624,7 +624,7 @@ int acpi_pm_device_sleep_state(struct de * can wake the system. _S0W may be valid, too. */ if (acpi_target_sleep_state == ACPI_STATE_S0 || - (device_may_wakeup(dev) && adev->wakeup.state.enabled && + (device_may_wakeup(dev) && adev->wakeup.sleep_state <= acpi_target_sleep_state)) { acpi_status status; @@ -632,7 +632,9 @@ int acpi_pm_device_sleep_state(struct de status = acpi_evaluate_integer(handle, acpi_method, NULL, &d_max); if (ACPI_FAILURE(status)) { - d_max = d_min; + if (acpi_target_sleep_state != ACPI_STATE_S0 || + status != AE_NOT_FOUND) + d_max = d_min; } else if (d_max < d_min) { /* Warn the user of the broken DSDT */ printk(KERN_WARNING "ACPI: Wrong value from %s\n", @@ -646,7 +648,9 @@ int acpi_pm_device_sleep_state(struct de *d_min_p = d_min; return d_max; } +#endif /* CONFIG_PM_OPS */ +#ifdef CONFIG_PM_SLEEP /** * acpi_pm_device_sleep_wake - enable or disable the system wake-up * capability of given device @@ -677,7 +681,7 @@ int acpi_pm_device_sleep_wake(struct dev return error; } -#endif +#endif /* CONFIG_PM_SLEEP */ static void acpi_power_off_prepare(void) { Index: linux-2.6/include/acpi/acpi_bus.h =================================================================== --- linux-2.6.orig/include/acpi/acpi_bus.h +++ linux-2.6/include/acpi/acpi_bus.h @@ -389,21 +389,25 @@ struct acpi_pci_root *acpi_pci_find_root int acpi_enable_wakeup_device_power(struct acpi_device *dev, int state); int acpi_disable_wakeup_device_power(struct acpi_device *dev); -#ifdef CONFIG_PM_SLEEP +#ifdef CONFIG_PM_OPS int acpi_pm_device_sleep_state(struct device *, int *); -int acpi_pm_device_sleep_wake(struct device *, bool); -#else /* !CONFIG_PM_SLEEP */ +#else static inline int acpi_pm_device_sleep_state(struct device *d, int *p) { if (p) *p = ACPI_STATE_D0; return ACPI_STATE_D3; } +#endif + +#ifdef CONFIG_PM_SLEEP +int acpi_pm_device_sleep_wake(struct device *, bool); +#else static inline int acpi_pm_device_sleep_wake(struct device *dev, bool enable) { return -ENODEV; } -#endif /* !CONFIG_PM_SLEEP */ +#endif #endif /* CONFIG_ACPI */