From patchwork Thu Aug 6 14:11:48 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tomeu Vizoso X-Patchwork-Id: 6960121 Return-Path: X-Original-To: patchwork-linux-arm@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 80A0B9F38B for ; Thu, 6 Aug 2015 14:27:00 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id CF542206FB for ; Thu, 6 Aug 2015 14:26:58 +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 A8B8C20688 for ; Thu, 6 Aug 2015 14:26:57 +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 1ZNM68-0000Th-UW; Thu, 06 Aug 2015 14:24:44 +0000 Received: from merlin.infradead.org ([2001:4978:20e::2]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1ZNM1D-000371-7p for linux-arm-kernel@bombadil.infradead.org; Thu, 06 Aug 2015 14:19:39 +0000 Received: from mail-wi0-x22b.google.com ([2a00:1450:400c:c05::22b]) by merlin.infradead.org with esmtps (Exim 4.85 #2 (Red Hat Linux)) id 1ZNM1A-0003t2-Ug for linux-arm-kernel@lists.infradead.org; Thu, 06 Aug 2015 14:19:38 +0000 Received: by wicgj17 with SMTP id gj17so24664508wic.1 for ; Thu, 06 Aug 2015 07:19:07 -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=cuBAbedpXljUfJLbi1a5ZdCtqPbk80AehZhz9z4HYdo=; b=SrrU3IEo6tGjqutqupIT22aiF1kapn0ZFgIH9THc2IImfVebRQCCD+FjKH2/1ue1sM MbgRaAir8wcon3sA/KOhuh+PSNogog7/2l3boK07d1uUH5QqyP1p7jr3Ne8opFxBaq+l +V5TZMqDPvco9beCgdgu4FDtPE4R9Ancv2fkje6YtvH1p5RtajqBnocC5JkVWWYHERoW qEh5Vt8us0BdpZOe+tfOzs7x9WqWkyXqY56htQE351ttywY6qZxpaM9Oa10YTvazsACj 3RFFfi6/32xcchKIaKtUzVM+sOj3ip0noMeUMaE4G/RN77j8Ca5JjWleqI3cfGv566uP kAvA== X-Received: by 10.194.133.73 with SMTP id pa9mr3835640wjb.148.1438870744992; Thu, 06 Aug 2015 07:19:04 -0700 (PDT) Received: from cizrna.lan ([109.72.12.154]) by smtp.gmail.com with ESMTPSA id z5sm9727282wjr.42.2015.08.06.07.19.03 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 06 Aug 2015 07:19:04 -0700 (PDT) From: Tomeu Vizoso To: linux-kernel@vger.kernel.org Subject: [PATCH v3 11/18] backlight: Probe backlight devices on demand Date: Thu, 6 Aug 2015 16:11:48 +0200 Message-Id: <1438870315-18689-12-git-send-email-tomeu.vizoso@collabora.com> X-Mailer: git-send-email 2.4.3 In-Reply-To: <1438870315-18689-1-git-send-email-tomeu.vizoso@collabora.com> References: <1438870315-18689-1-git-send-email-tomeu.vizoso@collabora.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20150806_101937_264266_B4910516 X-CRM114-Status: GOOD ( 12.00 ) 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 , Linus Walleij , Dmitry Torokhov , "Rafael J. Wysocki" , Rob Herring , Javier Martinez Canillas , Mark Brown , Thierry Reding , 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=-4.2 required=5.0 tests=BAYES_00,DKIM_SIGNED, RCVD_IN_DNSWL_MED,RP_MATCHES_RCVD,T_DKIM_INVALID,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 When looking up a backlight 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 --- Changes in v3: None Changes in v2: None drivers/video/backlight/backlight.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/video/backlight/backlight.c b/drivers/video/backlight/backlight.c index bddc8b17a4d8..cad854196ee3 100644 --- a/drivers/video/backlight/backlight.c +++ b/drivers/video/backlight/backlight.c @@ -16,6 +16,7 @@ #include #include #include +#include #ifdef CONFIG_PMAC_BACKLIGHT #include @@ -559,6 +560,8 @@ struct backlight_device *of_find_backlight_by_node(struct device_node *node) { struct device *dev; + of_platform_probe(node); + dev = class_find_device(backlight_class, NULL, node, of_parent_match); return dev ? to_backlight_device(dev) : NULL;