From patchwork Tue May 11 17:49:25 2010 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Matthew Garrett X-Patchwork-Id: 98784 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by demeter.kernel.org (8.14.3/8.14.3) with ESMTP id o4BHnnMf029392 for ; Tue, 11 May 2010 17:49:49 GMT Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754216Ab0EKRtb (ORCPT ); Tue, 11 May 2010 13:49:31 -0400 Received: from mx1.redhat.com ([209.132.183.28]:42505 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754832Ab0EKRta (ORCPT ); Tue, 11 May 2010 13:49:30 -0400 Received: from int-mx04.intmail.prod.int.phx2.redhat.com (int-mx04.intmail.prod.int.phx2.redhat.com [10.5.11.17]) by mx1.redhat.com (8.13.8/8.13.8) with ESMTP id o4BHnSOp029803 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK); Tue, 11 May 2010 13:49:28 -0400 Received: from cavan.codon.org.uk (ovpn01.gateway.prod.ext.phx2.redhat.com [10.5.9.1]) by int-mx04.intmail.prod.int.phx2.redhat.com (8.13.8/8.13.8) with ESMTP id o4BHnRfV022329 (version=TLSv1/SSLv3 cipher=AES256-SHA bits=256 verify=NO); Tue, 11 May 2010 13:49:28 -0400 Received: from lan-nat-pool-bos.redhat.com ([66.187.234.200] helo=localhost.localdomain) by cavan.codon.org.uk with esmtpsa (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.69) (envelope-from ) id 1OBta8-0004pv-E9; Tue, 11 May 2010 18:49:24 +0100 From: Matthew Garrett To: linux-acpi@vger.kernel.org Cc: lenb@kernel.org, linux-kernel@vger.kernel.org, Matthew Garrett Subject: [PATCH] acpi: Unconditionally set SCI_EN on resume Date: Tue, 11 May 2010 13:49:25 -0400 Message-Id: <1273600165-16681-1-git-send-email-mjg@redhat.com> X-SA-Do-Not-Run: Yes X-SA-Exim-Connect-IP: 66.187.234.200 X-SA-Exim-Mail-From: mjg@redhat.com X-SA-Exim-Scanned: No (on cavan.codon.org.uk); SAEximRunCond expanded to false X-Scanned-By: MIMEDefang 2.67 on 10.5.11.17 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]); Tue, 11 May 2010 17:49:49 +0000 (UTC) diff --git a/arch/x86/kernel/acpi/sleep.c b/arch/x86/kernel/acpi/sleep.c index f996103..82e5086 100644 --- a/arch/x86/kernel/acpi/sleep.c +++ b/arch/x86/kernel/acpi/sleep.c @@ -162,8 +162,6 @@ static int __init acpi_sleep_setup(char *str) #endif if (strncmp(str, "old_ordering", 12) == 0) acpi_old_suspend_ordering(); - if (strncmp(str, "sci_force_enable", 16) == 0) - acpi_set_sci_en_on_resume(); str = strchr(str, ','); if (str != NULL) str += strspn(str, ", \t"); diff --git a/drivers/acpi/sleep.c b/drivers/acpi/sleep.c index baa76bb..4ab2275 100644 --- a/drivers/acpi/sleep.c +++ b/drivers/acpi/sleep.c @@ -80,22 +80,6 @@ static int acpi_sleep_prepare(u32 acpi_state) #ifdef CONFIG_ACPI_SLEEP static u32 acpi_target_sleep_state = ACPI_STATE_S0; -/* - * According to the ACPI specification the BIOS should make sure that ACPI is - * enabled and SCI_EN bit is set on wake-up from S1 - S3 sleep states. Still, - * some BIOSes don't do that and therefore we use acpi_enable() to enable ACPI - * on such systems during resume. Unfortunately that doesn't help in - * particularly pathological cases in which SCI_EN has to be set directly on - * resume, although the specification states very clearly that this flag is - * owned by the hardware. The set_sci_en_on_resume variable will be set in such - * cases. - */ -static bool set_sci_en_on_resume; - -void __init acpi_set_sci_en_on_resume(void) -{ - set_sci_en_on_resume = true; -} /* * ACPI 1.0 wants us to execute _PTS before suspending devices, so we allow the @@ -253,11 +237,8 @@ static int acpi_suspend_enter(suspend_state_t pm_state) break; } - /* If ACPI is not enabled by the BIOS, we need to enable it here. */ - if (set_sci_en_on_resume) - acpi_write_bit_register(ACPI_BITREG_SCI_ENABLE, 1); - else - acpi_enable(); + /* This violates the spec but is required for bug compatibility. */ + acpi_write_bit_register(ACPI_BITREG_SCI_ENABLE, 1); /* Reprogram control registers and execute _BFS */ acpi_leave_sleep_state_prep(acpi_state); @@ -346,12 +327,6 @@ static int __init init_old_suspend_ordering(const struct dmi_system_id *d) return 0; } -static int __init init_set_sci_en_on_resume(const struct dmi_system_id *d) -{ - set_sci_en_on_resume = true; - return 0; -} - static struct dmi_system_id __initdata acpisleep_dmi_table[] = { { .callback = init_old_suspend_ordering, @@ -370,22 +345,6 @@ static struct dmi_system_id __initdata acpisleep_dmi_table[] = { }, }, { - .callback = init_set_sci_en_on_resume, - .ident = "Apple MacBook 1,1", - .matches = { - DMI_MATCH(DMI_SYS_VENDOR, "Apple Computer, Inc."), - DMI_MATCH(DMI_PRODUCT_NAME, "MacBook1,1"), - }, - }, - { - .callback = init_set_sci_en_on_resume, - .ident = "Apple MacMini 1,1", - .matches = { - DMI_MATCH(DMI_SYS_VENDOR, "Apple Computer, Inc."), - DMI_MATCH(DMI_PRODUCT_NAME, "Macmini1,1"), - }, - }, - { .callback = init_old_suspend_ordering, .ident = "Asus Pundit P1-AH2 (M2N8L motherboard)", .matches = { @@ -394,94 +353,6 @@ static struct dmi_system_id __initdata acpisleep_dmi_table[] = { }, }, { - .callback = init_set_sci_en_on_resume, - .ident = "Toshiba Satellite L300", - .matches = { - DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), - DMI_MATCH(DMI_PRODUCT_NAME, "Satellite L300"), - }, - }, - { - .callback = init_set_sci_en_on_resume, - .ident = "Hewlett-Packard HP G7000 Notebook PC", - .matches = { - DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"), - DMI_MATCH(DMI_PRODUCT_NAME, "HP G7000 Notebook PC"), - }, - }, - { - .callback = init_set_sci_en_on_resume, - .ident = "Hewlett-Packard HP Pavilion dv3 Notebook PC", - .matches = { - DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"), - DMI_MATCH(DMI_PRODUCT_NAME, "HP Pavilion dv3 Notebook PC"), - }, - }, - { - .callback = init_set_sci_en_on_resume, - .ident = "Hewlett-Packard Pavilion dv4", - .matches = { - DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"), - DMI_MATCH(DMI_PRODUCT_NAME, "HP Pavilion dv4"), - }, - }, - { - .callback = init_set_sci_en_on_resume, - .ident = "Hewlett-Packard Pavilion dv7", - .matches = { - DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"), - DMI_MATCH(DMI_PRODUCT_NAME, "HP Pavilion dv7"), - }, - }, - { - .callback = init_set_sci_en_on_resume, - .ident = "Hewlett-Packard Compaq Presario C700 Notebook PC", - .matches = { - DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"), - DMI_MATCH(DMI_PRODUCT_NAME, "Compaq Presario C700 Notebook PC"), - }, - }, - { - .callback = init_set_sci_en_on_resume, - .ident = "Hewlett-Packard Compaq Presario CQ40 Notebook PC", - .matches = { - DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"), - DMI_MATCH(DMI_PRODUCT_NAME, "Compaq Presario CQ40 Notebook PC"), - }, - }, - { - .callback = init_set_sci_en_on_resume, - .ident = "Lenovo ThinkPad T410", - .matches = { - DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), - DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad T410"), - }, - }, - { - .callback = init_set_sci_en_on_resume, - .ident = "Lenovo ThinkPad T510", - .matches = { - DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), - DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad T510"), - }, - }, - { - .callback = init_set_sci_en_on_resume, - .ident = "Lenovo ThinkPad W510", - .matches = { - DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), - DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad W510"), - }, - }, - { - .callback = init_set_sci_en_on_resume, - .ident = "Lenovo ThinkPad X201[s]", - .matches = { - DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), - DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad X201"), - }, - }, - { .callback = init_old_suspend_ordering, .ident = "Panasonic CF51-2L", .matches = { @@ -490,30 +361,6 @@ static struct dmi_system_id __initdata acpisleep_dmi_table[] = { DMI_MATCH(DMI_BOARD_NAME, "CF51-2L"), }, }, - { - .callback = init_set_sci_en_on_resume, - .ident = "Dell Studio 1558", - .matches = { - DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), - DMI_MATCH(DMI_PRODUCT_NAME, "Studio 1558"), - }, - }, - { - .callback = init_set_sci_en_on_resume, - .ident = "Dell Studio 1557", - .matches = { - DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), - DMI_MATCH(DMI_PRODUCT_NAME, "Studio 1557"), - }, - }, - { - .callback = init_set_sci_en_on_resume, - .ident = "Dell Studio 1555", - .matches = { - DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), - DMI_MATCH(DMI_PRODUCT_NAME, "Studio 1555"), - }, - }, {}, }; #endif /* CONFIG_SUSPEND */ diff --git a/include/linux/acpi.h b/include/linux/acpi.h index b926afe..87ca491 100644 --- a/include/linux/acpi.h +++ b/include/linux/acpi.h @@ -251,7 +251,6 @@ int acpi_check_mem_region(resource_size_t start, resource_size_t n, void __init acpi_no_s4_hw_signature(void); void __init acpi_old_suspend_ordering(void); void __init acpi_s4_no_nvs(void); -void __init acpi_set_sci_en_on_resume(void); #endif /* CONFIG_PM_SLEEP */ struct acpi_osc_context {