From patchwork Fri Aug 6 01:12:54 2010 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Rafael Wysocki X-Patchwork-Id: 117627 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by demeter.kernel.org (8.14.4/8.14.3) with ESMTP id o761HrWU022468 for ; Fri, 6 Aug 2010 01:18:00 GMT Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934232Ab0HFBRz (ORCPT ); Thu, 5 Aug 2010 21:17:55 -0400 Received: from ogre.sisk.pl ([217.79.144.158]:43672 "EHLO ogre.sisk.pl" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S934322Ab0HFBRr (ORCPT ); Thu, 5 Aug 2010 21:17:47 -0400 Received: from localhost (localhost.localdomain [127.0.0.1]) by ogre.sisk.pl (Postfix) with ESMTP id E553D18FC08; Fri, 6 Aug 2010 03:10:32 +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 02103-05; Fri, 6 Aug 2010 03:10:07 +0200 (CEST) Received: from ferrari.localnet (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 7829118FEEC; Fri, 6 Aug 2010 03:09:50 +0200 (CEST) From: "Rafael J. Wysocki" To: Hidetoshi Seto Subject: [PATCH 8/10] ACPI / PCI: Do not preserve _OSC control bits returned by a query (v2) Date: Fri, 6 Aug 2010 03:12:54 +0200 User-Agent: KMail/1.13.5 (Linux/2.6.35-rjw+; KDE/4.4.4; x86_64; ; ) Cc: Kenji Kaneshige , Jesse Barnes , linux-pci@vger.kernel.org, ACPI Devel Maling List , linux-pm@lists.linux-foundation.org References: <201008060303.51224.rjw@sisk.pl> In-Reply-To: <201008060303.51224.rjw@sisk.pl> MIME-Version: 1.0 Message-Id: <201008060312.54954.rjw@sisk.pl> X-Virus-Scanned: amavisd-new at ogre.sisk.pl using MkS_Vir for Linux Sender: linux-acpi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-acpi@vger.kernel.org X-Greylist: IP, sender and recipient auto-whitelisted, not delayed by milter-greylist-4.2.3 (demeter.kernel.org [140.211.167.41]); Fri, 06 Aug 2010 01:18:00 +0000 (UTC) Index: linux-2.6/drivers/acpi/pci_root.c =================================================================== --- linux-2.6.orig/drivers/acpi/pci_root.c +++ linux-2.6/drivers/acpi/pci_root.c @@ -248,12 +248,8 @@ static acpi_status acpi_pci_query_osc(st status = acpi_pci_run_osc(root->device->handle, capbuf, &result); if (ACPI_SUCCESS(status)) { root->osc_support_set = support; - if (control) { + if (control) *control = result; - } else { - root->osc_control_qry = result; - root->osc_queried = 1; - } } return status; } @@ -449,19 +445,6 @@ acpi_status acpi_pci_osc_control_set(acp if ((root->osc_control_set & control_req) == control_req) goto out; - /* Need to query controls first before requesting them */ - if (!root->osc_queried) { - status = acpi_pci_query_osc(root, root->osc_support_set, NULL); - if (ACPI_FAILURE(status)) - goto out; - } - if ((root->osc_control_qry & control_req) != control_req) { - printk(KERN_DEBUG - "Firmware did not grant requested _OSC control\n"); - status = AE_SUPPORT; - goto out; - } - capbuf[OSC_QUERY_TYPE] = 0; capbuf[OSC_SUPPORT_TYPE] = root->osc_support_set; capbuf[OSC_CONTROL_TYPE] = root->osc_control_set | control_req; 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 @@ -377,9 +377,6 @@ struct acpi_pci_root { u32 osc_support_set; /* _OSC state of support bits */ u32 osc_control_set; /* _OSC state of control bits */ - u32 osc_control_qry; /* the latest _OSC query result */ - - u32 osc_queried:1; /* has _OSC control been queried? */ }; /* helper */