From patchwork Thu Sep 17 12:57:08 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tomeu Vizoso X-Patchwork-Id: 7207211 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 D2A259F380 for ; Thu, 17 Sep 2015 13:11:41 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id E96E92084B for ; Thu, 17 Sep 2015 13:11:40 +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 7B0D120892 for ; Thu, 17 Sep 2015 13:11:35 +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 1ZcYxH-0008R6-Ak; Thu, 17 Sep 2015 13:10:27 +0000 Received: from mail-wi0-x235.google.com ([2a00:1450:400c:c05::235]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1ZcYli-0006x3-PF for linux-arm-kernel@lists.infradead.org; Thu, 17 Sep 2015 12:58:32 +0000 Received: by wicfx3 with SMTP id fx3so22624655wic.1 for ; Thu, 17 Sep 2015 05:58:09 -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=hs8i44minXOgR6h/gvKwlo9Up8bQtDP/CsGtmhJk0jo=; b=VEt95W/pXUEXYxQhIxMOGylLgF1Xkq2EE91aYLlaAokAiQpIKLUHpyDg1Q642to6xa tSnRdyAFpH1V08BsiKaFKO985bCn5F3YUyLpOkIrOLNMfdyHin9Po9Lvcx1PJXYP09qR G5ONgF0nQKmWdKj0TzM4lNsLEkDOJIxUQqFTrJL5UxaenVphLI7ZH7QYoIs6LchgDAka 8sd5alb+QvDTQcc1rdX0/78e2JQSl4TVIfCgW4zjOmY8OyHYNhCEJnXiFn5NLb5kr/Ch muSD68Y4rsVZDuLpbZnQmNkwelyJ5bTBWLqyH2PwoksAR7el7oFZS0nPliyIHAV2LRmK W4OA== X-Received: by 10.194.238.39 with SMTP id vh7mr61454544wjc.109.1442494689114; Thu, 17 Sep 2015 05:58:09 -0700 (PDT) Received: from cizrna.lan ([109.72.12.203]) by smtp.gmail.com with ESMTPSA id jr5sm2203032wjc.26.2015.09.17.05.58.07 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 17 Sep 2015 05:58:08 -0700 (PDT) From: Tomeu Vizoso To: linux-kernel@vger.kernel.org Subject: [PATCH v5 14/23] backlight: Probe backlight devices on demand Date: Thu, 17 Sep 2015 14:57:08 +0200 Message-Id: <1442494637-3674-15-git-send-email-tomeu.vizoso@collabora.com> X-Mailer: git-send-email 2.4.3 In-Reply-To: <1442494637-3674-1-git-send-email-tomeu.vizoso@collabora.com> References: <1442494637-3674-1-git-send-email-tomeu.vizoso@collabora.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20150917_055831_223150_18DE7836 X-CRM114-Status: GOOD ( 10.98 ) X-Spam-Score: -2.6 (--) 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 , Greg Kroah-Hartman , Linus Walleij , Dmitry Torokhov , "Rafael J. Wysocki" , Rob Herring , Javier Martinez Canillas , Mark Brown , Thierry Reding , Alan Stern , 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 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 v5: None Changes in v4: None 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..9bcdc16eacdf 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_device_probe(node); + dev = class_find_device(backlight_class, NULL, node, of_parent_match); return dev ? to_backlight_device(dev) : NULL;