From patchwork Mon Sep 7 12:23:36 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tomeu Vizoso X-Patchwork-Id: 7134811 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 41522BEEC1 for ; Mon, 7 Sep 2015 12:44:56 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 35076206B2 for ; Mon, 7 Sep 2015 12:44:55 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 6103920678 for ; Mon, 7 Sep 2015 12:44:54 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1ZYvlH-00088X-4L; Mon, 07 Sep 2015 12:43:03 +0000 Received: from casper.infradead.org ([2001:770:15f::2]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1ZYvlB-0007xU-7c for linux-arm-kernel@bombadil.infradead.org; Mon, 07 Sep 2015 12:42:57 +0000 Received: from mail-wi0-x22c.google.com ([2a00:1450:400c:c05::22c]) by casper.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1ZYvTc-00053N-P6 for linux-arm-kernel@lists.infradead.org; Mon, 07 Sep 2015 12:24:50 +0000 Received: by wicfx3 with SMTP id fx3so86932126wic.1 for ; Mon, 07 Sep 2015 05:24:26 -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=UOcVXk3lzBVroObweWjXaxszM0EDTq0J9FyaYzFfJ0I=; b=o6aJxHGyTdu6QFPUzRjjDsWJd/xsWWs6dL+xC7ikmBlRpqpJ89XH5bty0MW8FkVGfw TfXuxcCeic3IoqlzHRqjrZs1X27oHFKgTwyw3C7SxL2ZzaCrkVOjhikD90Yx8HSV41ev 4Tnmvy1ZXYGxIUvIJMY/qTTPeXla/7V4CEUBORY0aDh4Y4gNpH0YCk3itBbOaN5OTpD6 uUOpXNxJA6XkLGPDTPDqEf+ygt3sQiI+jGJmBOxc/8x2fe9vfWyvvhzHpyLU70pnJgEp kTNG6vUhS1NCeU3tcpxl5KGsVnjS+bY1malSEofpltWLhnV4qZmCYeYitV/MKguf5MSX DFcg== X-Received: by 10.194.103.228 with SMTP id fz4mr10045379wjb.53.1441628666223; Mon, 07 Sep 2015 05:24:26 -0700 (PDT) Received: from cizrna.lan ([109.72.12.78]) by smtp.gmail.com with ESMTPSA id cm6sm15438wib.22.2015.09.07.05.24.24 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 07 Sep 2015 05:24:25 -0700 (PDT) From: Tomeu Vizoso To: linux-kernel@vger.kernel.org Subject: [PATCH v4 11/22] i2c: core: Probe i2c adapters and devices on demand Date: Mon, 7 Sep 2015 14:23:36 +0200 Message-Id: <1441628627-5143-12-git-send-email-tomeu.vizoso@collabora.com> X-Mailer: git-send-email 2.4.3 In-Reply-To: <1441628627-5143-1-git-send-email-tomeu.vizoso@collabora.com> References: <1441628627-5143-1-git-send-email-tomeu.vizoso@collabora.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20150907_132448_859157_73ECCB68 X-CRM114-Status: GOOD ( 13.12 ) X-Spam-Score: -2.4 (--) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Tomeu Vizoso , devicetree@vger.kernel.org, linux-acpi@vger.kernel.org, Arnd Bergmann , Stephen Warren , Wolfram Sang , Linus Walleij , Dmitry Torokhov , "Rafael J. Wysocki" , Rob Herring , Javier Martinez Canillas , Mark Brown , Thierry Reding , linux-i2c@vger.kernel.org, linux-arm-kernel@lists.infradead.org MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-4.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, RCVD_IN_DNSWL_MED, T_DKIM_INVALID, T_RP_MATCHES_RCVD, 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 When looking up an i2c adapter or device through its OF 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 Acked-by: Wolfram Sang --- Changes in v4: None Changes in v3: None Changes in v2: None drivers/i2c/i2c-core.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/i2c/i2c-core.c b/drivers/i2c/i2c-core.c index 5f89f1e3c2f2..02da3acbbd35 100644 --- a/drivers/i2c/i2c-core.c +++ b/drivers/i2c/i2c-core.c @@ -1413,6 +1413,8 @@ struct i2c_client *of_find_i2c_device_by_node(struct device_node *node) struct device *dev; struct i2c_client *client; + of_device_probe(node); + dev = bus_find_device(&i2c_bus_type, NULL, node, of_dev_node_match); if (!dev) return NULL; @@ -1431,6 +1433,8 @@ struct i2c_adapter *of_find_i2c_adapter_by_node(struct device_node *node) struct device *dev; struct i2c_adapter *adapter; + of_device_probe(node); + dev = bus_find_device(&i2c_bus_type, NULL, node, of_dev_node_match); if (!dev) return NULL;