From patchwork Mon Sep 21 14:02:53 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tomeu Vizoso X-Patchwork-Id: 7231541 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 1F30E9F30C for ; Mon, 21 Sep 2015 14:09:34 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 4ACE020797 for ; Mon, 21 Sep 2015 14:09:30 +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 33E232076F for ; Mon, 21 Sep 2015 14:09:29 +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 1Ze1jT-0005E0-W7; Mon, 21 Sep 2015 14:06:16 +0000 Received: from mail-lb0-x233.google.com ([2a00:1450:4010:c04::233]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1Ze1hb-000293-98 for linux-arm-kernel@lists.infradead.org; Mon, 21 Sep 2015 14:04:20 +0000 Received: by lbcao8 with SMTP id ao8so51413280lbc.3 for ; Mon, 21 Sep 2015 07:03:57 -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=nvep2cHMnWeXFKLmNgF0MkMhkwSHXVYotRY7W+kw2Mo=; b=VqFkrz6gtRit8MhLg/u0+E3g7Q49zxTo9ZaL7YXoTGOMNTeF8azx1MgltUrNui6aBj SGO5M5cHmaHU5beOYMaGkmT7kdr04Lgz9zLnOUh6EtdFu992SwtanL50kCCnJyT+641I BMDOVq3tjHdrzkVSoxou5RZuBd+u7ccvX/md0NnCttj/jQSlG55HfvRY0WesBQ8MGYjR BKICJ+7Qy6EyLhpPqeyuQVvDki2HKRL3zOLq6aU15j/N16KzfG+7OggnNCLz4n5LWQVR cxjn1elEu3c/D+iXY3lzUvDEDFQ7WItSuElofaIsC7+0XFpwIP7MI+LhC2WDSHOkhE2r khbg== X-Received: by 10.194.239.167 with SMTP id vt7mr26158824wjc.5.1442844237112; Mon, 21 Sep 2015 07:03:57 -0700 (PDT) Received: from cizrna.lan ([109.72.12.69]) by smtp.gmail.com with ESMTPSA id gk9sm13687031wib.9.2015.09.21.07.03.55 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 21 Sep 2015 07:03:56 -0700 (PDT) From: Tomeu Vizoso To: linux-kernel@vger.kernel.org Subject: [PATCH v6 13/22] backlight: Probe backlight devices on demand Date: Mon, 21 Sep 2015 16:02:53 +0200 Message-Id: <1442844182-27787-14-git-send-email-tomeu.vizoso@collabora.com> X-Mailer: git-send-email 2.4.3 In-Reply-To: <1442844182-27787-1-git-send-email-tomeu.vizoso@collabora.com> References: <1442844182-27787-1-git-send-email-tomeu.vizoso@collabora.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20150921_070419_604588_3E348E3E X-CRM114-Status: GOOD ( 12.35 ) 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,RP_MATCHES_RCVD,T_DKIM_INVALID,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 --- 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;