From patchwork Fri Oct 5 07:43:32 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ulf Hansson X-Patchwork-Id: 1551361 Return-Path: X-Original-To: patchwork-spi-devel-general@patchwork.kernel.org Delivered-To: patchwork-process-083081@patchwork2.kernel.org Received: from lists.sourceforge.net (lists.sourceforge.net [216.34.181.88]) by patchwork2.kernel.org (Postfix) with ESMTP id 95349DF24C for ; Fri, 5 Oct 2012 07:44:47 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=sfs-ml-3.b.ch3.sourceforge.com) by sfs-ml-3.v29.ch3.sourceforge.com with esmtp (Exim 4.76) (envelope-from ) id 1TK2aR-00086N-2u; Fri, 05 Oct 2012 07:44:43 +0000 Received: from sog-mx-1.v43.ch3.sourceforge.com ([172.29.43.191] helo=mx.sourceforge.net) by sfs-ml-3.v29.ch3.sourceforge.com with esmtp (Exim 4.76) (envelope-from ) id 1TK2aP-00086H-Eg for spi-devel-general@lists.sourceforge.net; Fri, 05 Oct 2012 07:44:41 +0000 X-ACL-Warn: Received: from eu1sys200aog101.obsmtp.com ([207.126.144.111]) by sog-mx-1.v43.ch3.sourceforge.com with smtps (TLSv1:AES256-SHA:256) (Exim 4.76) id 1TK2aN-0001qU-LM for spi-devel-general@lists.sourceforge.net; Fri, 05 Oct 2012 07:44:41 +0000 Received: from beta.dmz-us.st.com ([167.4.1.35]) (using TLSv1) by eu1sys200aob101.postini.com ([207.126.147.11]) with SMTP ID DSNKUG6P2IAYS39lhCFPiB/EMqtovzO9q5cq@postini.com; Fri, 05 Oct 2012 07:44:39 UTC Received: from zeta.dmz-us.st.com (ns4.st.com [167.4.16.71]) by beta.dmz-us.st.com (STMicroelectronics) with ESMTP id 662BA40; Fri, 5 Oct 2012 07:43:07 +0000 (GMT) Received: from relay2.stm.gmessaging.net (unknown [10.230.100.18]) by zeta.dmz-us.st.com (STMicroelectronics) with ESMTP id F3EA758; Fri, 5 Oct 2012 03:26:29 +0000 (GMT) Received: from exdcvycastm022.EQ1STM.local (alteon-source-exch [10.230.100.61]) (using TLSv1 with cipher RC4-MD5 (128/128 bits)) (Client CN "exdcvycastm022", Issuer "exdcvycastm022" (not verified)) by relay2.stm.gmessaging.net (Postfix) with ESMTPS id 2C45DA8074; Fri, 5 Oct 2012 09:43:35 +0200 (CEST) Received: from steludxu1397.stericsson.com (10.230.100.153) by smtp.stericsson.com (10.230.100.30) with Microsoft SMTP Server (TLS) id 8.3.83.0; Fri, 5 Oct 2012 09:43:37 +0200 From: Ulf Hansson To: Mark Brown , Grant Likely , Subject: [PATCH] spi/pl022: Activate resourses before deactivate them in suspend Date: Fri, 5 Oct 2012 09:43:32 +0200 Message-ID: <1349423012-18048-1-git-send-email-ulf.hansson@stericsson.com> X-Mailer: git-send-email 1.7.10 MIME-Version: 1.0 X-Spam-Score: -0.5 (/) X-Spam-Report: Spam Filtering performed by mx.sourceforge.net. See http://spamassassin.org/tag/ for more details. -0.5 AWL AWL: From: address is in the auto white-list X-Headers-End: 1TK2aN-0001qU-LM Cc: Ulf Hansson , Vipul Kumar Samar , Russell King , Viresh Kumar , Linus Walleij , linux-arm-kernel@lists.infradead.org X-BeenThere: spi-devel-general@lists.sourceforge.net X-Mailman-Version: 2.1.9 Precedence: list List-Id: Linux SPI core/device drivers discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: spi-devel-general-bounces@lists.sourceforge.net From: Ulf Hansson To be able to deactivate resourses in suspend, the resourses must first be surely active. This is done with a pm_runtime_get_sync. Once the resourses are restored to active state again in resume, the runtime pm usage count can be decreased with a pm_runtime_put. Signed-off-by: Ulf Hansson --- drivers/spi/spi-pl022.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/spi/spi-pl022.c b/drivers/spi/spi-pl022.c index 9194641..c3590e0 100644 --- a/drivers/spi/spi-pl022.c +++ b/drivers/spi/spi-pl022.c @@ -2350,6 +2350,8 @@ static int pl022_suspend(struct device *dev) dev_warn(dev, "cannot suspend master\n"); return ret; } + + pm_runtime_get_sync(dev); pl022_suspend_resources(pl022); dev_dbg(dev, "suspended\n"); @@ -2362,6 +2364,7 @@ static int pl022_resume(struct device *dev) int ret; pl022_resume_resources(pl022); + pm_runtime_put(dev); /* Start the queue running */ ret = spi_master_resume(pl022->master);