From patchwork Wed Apr 24 07:43:52 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lubomir Rintel X-Patchwork-Id: 10914297 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 237101390 for ; Wed, 24 Apr 2019 07:44:44 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 17AF32884B for ; Wed, 24 Apr 2019 07:44:44 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 0C3692887A; Wed, 24 Apr 2019 07:44:44 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=unavailable version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id BBA0D28875 for ; Wed, 24 Apr 2019 07:44:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729759AbfDXHon (ORCPT ); Wed, 24 Apr 2019 03:44:43 -0400 Received: from shell.v3.sk ([90.176.6.54]:39525 "EHLO shell.v3.sk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729754AbfDXHom (ORCPT ); Wed, 24 Apr 2019 03:44:42 -0400 Received: from localhost (localhost [127.0.0.1]) by zimbra.v3.sk (Postfix) with ESMTP id 8C04C102E30; Wed, 24 Apr 2019 09:44:40 +0200 (CEST) Received: from shell.v3.sk ([127.0.0.1]) by localhost (zimbra.v3.sk [127.0.0.1]) (amavisd-new, port 10032) with ESMTP id hbndvjuNYZhd; Wed, 24 Apr 2019 09:44:17 +0200 (CEST) Received: from localhost (localhost [127.0.0.1]) by zimbra.v3.sk (Postfix) with ESMTP id DA624102E56; Wed, 24 Apr 2019 09:44:08 +0200 (CEST) X-Virus-Scanned: amavisd-new at zimbra.v3.sk Received: from shell.v3.sk ([127.0.0.1]) by localhost (zimbra.v3.sk [127.0.0.1]) (amavisd-new, port 10026) with ESMTP id XFQK14z9VcVu; Wed, 24 Apr 2019 09:44:06 +0200 (CEST) Received: from belphegor.brq.redhat.com (nat-pool-brq-t.redhat.com [213.175.37.10]) by zimbra.v3.sk (Postfix) with ESMTPSA id 8A527102E3F; Wed, 24 Apr 2019 09:44:01 +0200 (CEST) From: Lubomir Rintel To: Andy Shevchenko , Darren Hart Cc: Rob Herring , Russell King , Mark Rutland , platform-driver-x86@vger.kernel.org, linux-pm@vger.kernel.org, Sebastian Reichel , Lubomir Rintel Subject: [PATCH v6 09/10] ARM: export arm_pm_restart Date: Wed, 24 Apr 2019 09:43:52 +0200 Message-Id: <20190424074353.458446-10-lkundrak@v3.sk> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20190424074353.458446-1-lkundrak@v3.sk> References: <20190424074353.458446-1-lkundrak@v3.sk> MIME-Version: 1.0 Sender: linux-pm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP The OLPC XO 1.75 laptop is rebooted with a command to the Embedded Controller. The EC driver should be a module, since most people don't need it to be compiled in. The EC driver can't use register_restart_handler() because handlers registered with it are executed in atomic context and the XO 1.75 reboot dance needs to block: the reboot is initiated by poking a GPIO ofter which we need to wait for the EC to initiate a SPI transfer and finish it. Signed-off-by: Lubomir Rintel --- Changes since v4: - Clarify why we need this arch/arm/kernel/reboot.c | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm/kernel/reboot.c b/arch/arm/kernel/reboot.c index 3b2aa9a9fe26..71016cf19b86 100644 --- a/arch/arm/kernel/reboot.c +++ b/arch/arm/kernel/reboot.c @@ -22,6 +22,7 @@ typedef void (*phys_reset_t)(unsigned long, bool); * Function pointers to optional machine specific functions */ void (*arm_pm_restart)(enum reboot_mode reboot_mode, const char *cmd); +EXPORT_SYMBOL_GPL(arm_pm_restart); void (*pm_power_off)(void); EXPORT_SYMBOL(pm_power_off);