From patchwork Tue Jul 28 13:19:44 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tomeu Vizoso X-Patchwork-Id: 501211 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 6DF42140E10 for ; Tue, 28 Jul 2015 23:23:56 +1000 (AEST) Authentication-Results: ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.b=Zhp5hTvL; dkim-atps=neutral Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932124AbbG1NVF (ORCPT ); Tue, 28 Jul 2015 09:21:05 -0400 Received: from mail-wi0-f182.google.com ([209.85.212.182]:37755 "EHLO mail-wi0-f182.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932102AbbG1NVD (ORCPT ); Tue, 28 Jul 2015 09:21:03 -0400 Received: by wibud3 with SMTP id ud3so159245072wib.0; Tue, 28 Jul 2015 06:21:01 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=sender:from:to:cc:subject:date:message-id:in-reply-to:references; bh=rLaBrnr8/xCN4chfMAZgIlP1ea+1Moy792adsYswBLo=; b=Zhp5hTvLeB9tVaM2peRS+tBIUNyjkgJw65YP23SD/aEh3KcflDOErijLfUkvab1sDp CglDbEje1wlJYWd3AbzlO06UtCLclG/OnyERgxXE5BTLsGpfKRASmUBW0VkRgv7rhjPV 1E3/SvOnx7vuo8SGcCEWsdPvw77iljgMYoBYMydsLAjZw9HmDf08r+VPqPNeFUlnAnUe tCypEsOcmFqY3YU3ien+W9t50HR4hO9WiMxHsaV4incryoBlN06K2PMn2Or+U3z6vT57 c19Z9hE2iJNZ+vB00yg/FMG0/lHIi0oihxFwLsc1h6GEBnZPxVtbHMnObEWLvay5kA0b +J7A== X-Received: by 10.194.82.167 with SMTP id j7mr65675261wjy.123.1438089661463; Tue, 28 Jul 2015 06:21:01 -0700 (PDT) Received: from cizrna.lan ([109.72.12.179]) by smtp.gmail.com with ESMTPSA id h9sm33265696wjx.20.2015.07.28.06.20.57 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 28 Jul 2015 06:21:00 -0700 (PDT) From: Tomeu Vizoso To: linux-kernel@vger.kernel.org Cc: Stephen Warren , Javier Martinez Canillas , Mark Brown , Thierry Reding , "Rafael J. Wysocki" , linux-arm-kernel@lists.infradead.org, Dmitry Torokhov , devicetree@vger.kernel.org, Linus Walleij , linux-acpi@vger.kernel.org, Arnd Bergmann , Tomeu Vizoso , Wolfram Sang , linux-i2c@vger.kernel.org Subject: [PATCH v2 13/22] i2c: core: Probe i2c master devices on demand Date: Tue, 28 Jul 2015 15:19:44 +0200 Message-Id: <1438089593-7696-14-git-send-email-tomeu.vizoso@collabora.com> X-Mailer: git-send-email 2.4.3 In-Reply-To: <1438089593-7696-1-git-send-email-tomeu.vizoso@collabora.com> References: <1438089593-7696-1-git-send-email-tomeu.vizoso@collabora.com> Sender: linux-i2c-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-i2c@vger.kernel.org When looking up an i2c master through its firmware node, probe it if it hasn't already. The goal is to reduce deferred probes to a minimum, as it makes it very cumbersome to find out why a device failed to probe, and can introduce very big delays in when a critical device is probed. Signed-off-by: Tomeu Vizoso --- Changes in v2: None drivers/i2c/i2c-core.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/i2c/i2c-core.c b/drivers/i2c/i2c-core.c index e6d4935161e4..5520b413e3db 100644 --- a/drivers/i2c/i2c-core.c +++ b/drivers/i2c/i2c-core.c @@ -1353,6 +1353,8 @@ struct i2c_adapter *of_find_i2c_adapter_by_node(struct device_node *node) { struct device *dev; + fwnode_ensure_device(&node->fwnode); + dev = bus_find_device(&i2c_bus_type, NULL, node, of_dev_node_match); if (!dev)