From patchwork Wed Dec 23 17:19:28 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Wolfram Sang X-Patchwork-Id: 7913321 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 77E389F318 for ; Wed, 23 Dec 2015 17:19:59 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id BBA9B20453 for ; Wed, 23 Dec 2015 17:19:58 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id E118520444 for ; Wed, 23 Dec 2015 17:19:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933572AbbLWRTr (ORCPT ); Wed, 23 Dec 2015 12:19:47 -0500 Received: from sauhun.de ([89.238.76.85]:59315 "EHLO pokefinder.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752600AbbLWRTm (ORCPT ); Wed, 23 Dec 2015 12:19:42 -0500 Received: from p4fe25b6b.dip0.t-ipconnect.de ([79.226.91.107]:40632 helo=localhost) by pokefinder.org with esmtpsa (TLS1.2:RSA_AES_128_CBC_SHA1:128) (Exim 4.80) (envelope-from ) id 1aBn4d-0006eX-2o; Wed, 23 Dec 2015 18:19:39 +0100 From: Wolfram Sang To: linux-i2c@vger.kernel.org Cc: linux-sh@vger.kernel.org, Magnus Damm , Simon Horman , Laurent Pinchart , Geert Uytterhoeven , Wolfram Sang , linux-pm@vger.kernel.org, Sylwester Nawrocki , Charles Keepax Subject: [PATCH 1/2] i2c: always enable RuntimePM for the adapter device Date: Wed, 23 Dec 2015 18:19:28 +0100 Message-Id: <1450891169-13708-2-git-send-email-wsa@the-dreams.de> X-Mailer: git-send-email 2.1.4 In-Reply-To: <1450891169-13708-1-git-send-email-wsa@the-dreams.de> References: <1450891169-13708-1-git-send-email-wsa@the-dreams.de> Sender: linux-pm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable 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 From: Wolfram Sang The adapter device is a logical device. Because of that, it already uses pm_runtime_no_callbacks() in the core. To ensure proper propagation from the children (i2c devices) to the parent of the adapter (the HW device), make sure RuntimePM is enabled in any case. Signed-off-by: Wolfram Sang --- drivers/i2c/i2c-core.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/i2c/i2c-core.c b/drivers/i2c/i2c-core.c index e94d2ca2aab4aa..55159e8e53283a 100644 --- a/drivers/i2c/i2c-core.c +++ b/drivers/i2c/i2c-core.c @@ -1610,6 +1610,7 @@ static int i2c_register_adapter(struct i2c_adapter *adap) dev_dbg(&adap->dev, "adapter [%s] registered\n", adap->name); pm_runtime_no_callbacks(&adap->dev); + pm_runtime_enable(&adap->dev); #ifdef CONFIG_I2C_COMPAT res = class_compat_create_link(i2c_adapter_compat_class, &adap->dev, @@ -1864,6 +1865,8 @@ void i2c_del_adapter(struct i2c_adapter *adap) /* device name is gone after device_unregister */ dev_dbg(&adap->dev, "adapter [%s] unregistered\n", adap->name); + pm_runtime_disable(&adap->dev); + /* wait until all references to the device are gone * * FIXME: This is old code and should ideally be replaced by an