From patchwork Thu Jan 10 17:58:44 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lubomir Rintel X-Patchwork-Id: 10756567 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 9AEE217D2 for ; Thu, 10 Jan 2019 18:01:20 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 8AFF729E6A for ; Thu, 10 Jan 2019 18:01:20 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 889A129E42; Thu, 10 Jan 2019 18:01:20 +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=-5.2 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 2DC0F29E4A for ; Thu, 10 Jan 2019 18:01:20 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=DEtzLUMjwfFGsUjbBRZFDr0G4APcXegeLmqeI4ux+Dk=; b=diEzJGXX4TFS2U QuZyeANW6jY7CAuPqt058Ee/yOVGJTaKsqT3+bfu6gWJlU2cWuF1UyKP7G3ItghQMYcnXDJJwkFSe IVZJaBno6KMEJ5FhqKRXqND6+IIMH/cDffFzQGXfzZGeypiTYRxKxyL01ETzFL5k17vlK0OraahvU X1We8Lf9JUY62Hxabw6MdDs4QXEfW95IIGS7WIao8MTfIrpDyObP/786HVdXea7q8gEeOsVaaASu6 fJcwZ/vYOVO0czD/TRN9KCTmyR1gtU4/LQw7AUXDScVHLgL/y48IiIXxQWgP+okZ74UNDIq0WsklM hvaZZn24JWyaOBs8DhRA==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1ghedp-0004FI-Tv; Thu, 10 Jan 2019 18:01:17 +0000 Received: from shell.v3.sk ([90.176.6.54]) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1ghebx-000125-L5 for linux-arm-kernel@lists.infradead.org; Thu, 10 Jan 2019 17:59:28 +0000 Received: from localhost (localhost [127.0.0.1]) by zimbra.v3.sk (Postfix) with ESMTP id 24C9F10019B; Thu, 10 Jan 2019 18:59:20 +0100 (CET) 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 jxN_GLfwRKYP; Thu, 10 Jan 2019 18:59:08 +0100 (CET) Received: from localhost (localhost [127.0.0.1]) by zimbra.v3.sk (Postfix) with ESMTP id 0C069100307; Thu, 10 Jan 2019 18:59:01 +0100 (CET) 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 QikxwaQK9201; Thu, 10 Jan 2019 18:58:58 +0100 (CET) Received: from belphegor.brq.redhat.com (nat-pool-brq-t.redhat.com [213.175.37.10]) by zimbra.v3.sk (Postfix) with ESMTPSA id 9FA261002FC; Thu, 10 Jan 2019 18:58:55 +0100 (CET) From: Lubomir Rintel To: Andy Shevchenko , Darren Hart Subject: [PATCH v5 09/10] ARM: export arm_pm_restart Date: Thu, 10 Jan 2019 18:58:44 +0100 Message-Id: <20190110175845.1203986-10-lkundrak@v3.sk> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190110175845.1203986-1-lkundrak@v3.sk> References: <20190110175845.1203986-1-lkundrak@v3.sk> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190110_095922_239376_394A36CD X-CRM114-Status: UNSURE ( 8.78 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Mark Rutland , devicetree@vger.kernel.org, linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org, Russell King , platform-driver-x86@vger.kernel.org, Lubomir Rintel , Rob Herring , linux-arm-kernel@lists.infradead.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.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);