From patchwork Tue Aug 11 01:35:46 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Eduardo Valentin X-Patchwork-Id: 6987591 Return-Path: X-Original-To: patchwork-linux-pm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 9860A9F373 for ; Tue, 11 Aug 2015 01:37:34 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id BCE442060B for ; Tue, 11 Aug 2015 01:37:33 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id DD6F320602 for ; Tue, 11 Aug 2015 01:37:32 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933635AbbHKBha (ORCPT ); Mon, 10 Aug 2015 21:37:30 -0400 Received: from mail-pd0-f169.google.com ([209.85.192.169]:34059 "EHLO mail-pd0-f169.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933578AbbHKBgG (ORCPT ); Mon, 10 Aug 2015 21:36:06 -0400 Received: by pdbfa8 with SMTP id fa8so37219636pdb.1; Mon, 10 Aug 2015 18:36:06 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=IVMZtJBdww3/WHxXcr+++nWNI+dGrvMDITX7f45u9cI=; b=P3BD9SarCtMeY1cv8PvqrNvPF6L6FQccD0Q4XVfFkj9ChcJ3UTrRhSLGInckJ8/bO6 eFnMwjunqVhKIL9ZpKyPXBcURuYmOX2f0v5MlQj14ahty78wdTieYXzd48wCLXMX2Oid SWUruWJpogEYWhIG5O5w9pwaeOGWL9X/tA2m55EiD6pVSL+RvLrNHtB8zjwdxYM4VzVz 9IaFOfSIrA/h4TiWNRr2SePDCMttGrlGqRdcixolHG4ziadbjRIIBP9hljgg0H3FVnkc GsaAkMcQc++7lvVHxG4UXmWA9NH7aiynucnSA16PrSISLn09P8tfIIqjyxHMu/kUO8L/ s0AA== X-Received: by 10.70.24.33 with SMTP id r1mr50169879pdf.20.1439256966165; Mon, 10 Aug 2015 18:36:06 -0700 (PDT) Received: from localhost (amazon.gigabitethernet4-0-6.asr1.snv2.gblx.net. [64.211.110.86]) by smtp.gmail.com with ESMTPSA id nm8sm310109pbc.20.2015.08.10.18.36.05 (version=TLSv1.2 cipher=RC4-SHA bits=128/128); Mon, 10 Aug 2015 18:36:05 -0700 (PDT) From: Eduardo Valentin To: Greg Kroah-Hartman , Jiri Slaby , Fabio Estevam Cc: Sascha Hauer , Linux PM , linux-serial@vger.kernel.org, LKML , Eduardo Valentin Subject: [PATCHv2 5/8] serial: imx: add a flag to indicate we are in the suspend path Date: Mon, 10 Aug 2015 18:35:46 -0700 Message-Id: <1439256949-626-6-git-send-email-edubezval@gmail.com> X-Mailer: git-send-email 2.5.0 In-Reply-To: <1439256949-626-1-git-send-email-edubezval@gmail.com> References: <1439256949-626-1-git-send-email-edubezval@gmail.com> Sender: linux-pm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org X-Spam-Status: No, score=-6.8 required=5.0 tests=BAYES_00, DKIM_ADSP_CUSTOM_MED, DKIM_SIGNED, FREEMAIL_FROM, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, T_DKIM_INVALID, UNPARSEABLE_RELAY autolearn=ham version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP This is a simple flag that gets set across prepare and complete callbacks in the suspend path. We the flag we may avoid runtime pm idling at the same time. Cc: Fabio Estevam Cc: Greg Kroah-Hartman Cc: Jiri Slaby Cc: linux-serial@vger.kernel.org Cc: linux-kernel@vger.kernel.org Signed-off-by: Eduardo Valentin --- drivers/tty/serial/imx.c | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) diff --git a/drivers/tty/serial/imx.c b/drivers/tty/serial/imx.c index fe3d41c..50abb60 100644 --- a/drivers/tty/serial/imx.c +++ b/drivers/tty/serial/imx.c @@ -218,6 +218,8 @@ struct imx_port { wait_queue_head_t dma_wait; unsigned int saved_reg[10]; bool context_saved; + + bool is_suspending; }; struct imx_port_ucrs { @@ -2026,6 +2028,22 @@ static void serial_imx_enable_wakeup(struct imx_port *sport, bool on) writel(val, sport->port.membase + UCR1); } +static int serial_imx_prepare(struct device *dev) +{ + struct imx_port *sport = dev_get_drvdata(dev); + + sport->is_suspending = true; + + return 0; +} + +static void serial_imx_complete(struct device *dev) +{ + struct imx_port *sport = dev_get_drvdata(dev); + + sport->is_suspending = false; +} + static int imx_serial_port_suspend_noirq(struct device *dev) { struct platform_device *pdev = to_platform_device(dev); @@ -2091,6 +2109,8 @@ static const struct dev_pm_ops imx_serial_port_pm_ops = { .resume_noirq = imx_serial_port_resume_noirq, .suspend = imx_serial_port_suspend, .resume = imx_serial_port_resume, + .prepare = serial_imx_prepare, + .complete = serial_imx_complete, }; static struct platform_driver serial_imx_driver = {