From patchwork Fri Jul 8 13:14:12 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hans de Goede X-Patchwork-Id: 588738 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id DBEBAC433EF for ; Fri, 8 Jul 2022 13:14:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238038AbiGHNOZ (ORCPT ); Fri, 8 Jul 2022 09:14:25 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54720 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S238044AbiGHNOY (ORCPT ); Fri, 8 Jul 2022 09:14:24 -0400 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id C70A61A3BB for ; Fri, 8 Jul 2022 06:14:23 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1657286062; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=pTLPSkPg91ZVPHWFVosWsgpnvQEs03edyu3/bORaMt0=; b=jQkfCcy4V9Pwn4U4+4HKU5loImlIKz2UR969jWyssJ1FFcZKtg7TTGa6apnB/Q5uzHmIbp QD1kgMF5klSbHT7ZLk0zCDLrghZWFhOGMNx51zx9COydRctfXLm60NwZUR5IcJ8vB+fUg2 19ZNXxHSsqYWzVPIBLus8pe7p0ENMXw= Received: from mimecast-mx02.redhat.com (mx3-rdu2.redhat.com [66.187.233.73]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-202-G1U-F32WNdiLXCRnoW8U9g-1; Fri, 08 Jul 2022 09:14:18 -0400 X-MC-Unique: G1U-F32WNdiLXCRnoW8U9g-1 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.rdu2.redhat.com [10.11.54.3]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id F02E5380406B; Fri, 8 Jul 2022 13:14:17 +0000 (UTC) Received: from shalem.redhat.com (unknown [10.39.193.188]) by smtp.corp.redhat.com (Postfix) with ESMTP id 61C381121314; Fri, 8 Jul 2022 13:14:16 +0000 (UTC) From: Hans de Goede To: "Rafael J . Wysocki" , Mika Westerberg , Dmitry Osipenko , Mark Gross , Andy Shevchenko , Ard Biesheuvel Cc: Hans de Goede , linux-acpi@vger.kernel.org, linux-pm@vger.kernel.org, platform-driver-x86@vger.kernel.org, x86@kernel.org, linux-efi@vger.kernel.org Subject: [PATCH 2/2] efi: Fix efi_power_off() not being run before acpi_power_off() when necessary Date: Fri, 8 Jul 2022 15:14:12 +0200 Message-Id: <20220708131412.81078-3-hdegoede@redhat.com> In-Reply-To: <20220708131412.81078-1-hdegoede@redhat.com> References: <20220708131412.81078-1-hdegoede@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.78 on 10.11.54.3 Precedence: bulk List-ID: X-Mailing-List: linux-efi@vger.kernel.org Commit 98f30d0ecf79 ("ACPI: power: Switch to sys-off handler API") switched the ACPI sleep code from directly setting the old global pm_power_off handler to using the new register_sys_off_handler() mechanism with a priority of SYS_OFF_PRIO_FIRMWARE. This is a problem when the old global pm_power_off handler would later be overwritten, such as done by the late_initcall(efi_shutdown_init): if (efi_poweroff_required()) pm_power_off = efi_power_off; The old global pm_power_off handler gets run with a priority of SYS_OFF_PRIO_DEFAULT which is lower then SYS_OFF_PRIO_FIRMWARE, causing acpi_power_off() to run first, changing the behavior from before the ACPI sleep code switched to the new register_sys_off_handler(). Switch the registering of efi_power_off over to register_sys_off_handler() with a priority of SYS_OFF_PRIO_FIRMWARE + 1 so that it will run before acpi_power_off() as before. Note since the new sys-off-handler code will try all handlers in priority order, there is no more need for the EFI code to store and call the original pm_power_off handler. Fixes: 98f30d0ecf79 ("ACPI: power: Switch to sys-off handler API") Cc: Dmitry Osipenko Signed-off-by: Hans de Goede Acked-by: Ard Biesheuvel --- drivers/firmware/efi/reboot.c | 21 +++++++++++---------- 1 file changed, 11 insertions(+), 10 deletions(-) diff --git a/drivers/firmware/efi/reboot.c b/drivers/firmware/efi/reboot.c index 73089a24f04b..ceae84c19d22 100644 --- a/drivers/firmware/efi/reboot.c +++ b/drivers/firmware/efi/reboot.c @@ -6,7 +6,7 @@ #include #include -static void (*orig_pm_power_off)(void); +static struct sys_off_handler *efi_sys_off_handler; int efi_reboot_quirk_mode = -1; @@ -51,15 +51,11 @@ bool __weak efi_poweroff_required(void) return false; } -static void efi_power_off(void) +static int efi_power_off(struct sys_off_data *data) { efi.reset_system(EFI_RESET_SHUTDOWN, EFI_SUCCESS, 0, NULL); - /* - * The above call should not return, if it does fall back to - * the original power off method (typically ACPI poweroff). - */ - if (orig_pm_power_off) - orig_pm_power_off(); + + return NOTIFY_DONE; } static int __init efi_shutdown_init(void) @@ -68,8 +64,13 @@ static int __init efi_shutdown_init(void) return -ENODEV; if (efi_poweroff_required()) { - orig_pm_power_off = pm_power_off; - pm_power_off = efi_power_off; + /* SYS_OFF_PRIO_FIRMWARE + 1 so that it runs before acpi_power_off */ + efi_sys_off_handler = + register_sys_off_handler(SYS_OFF_MODE_POWER_OFF, + SYS_OFF_PRIO_FIRMWARE + 1, + efi_power_off, NULL); + if (IS_ERR(efi_sys_off_handler)) + return PTR_ERR(efi_sys_off_handler); } return 0;