From patchwork Mon Sep 7 12:23:37 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tomeu Vizoso X-Patchwork-Id: 7134791 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 7D65A9F314 for ; Mon, 7 Sep 2015 12:44:48 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 9DBC1206B2 for ; Mon, 7 Sep 2015 12:44:47 +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 DA90520678 for ; Mon, 7 Sep 2015 12:44:46 +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 1ZYvl9-00082i-Kt; Mon, 07 Sep 2015 12:42:55 +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 1ZYvl7-0007xU-Ak for linux-arm-kernel@bombadil.infradead.org; Mon, 07 Sep 2015 12:42:53 +0000 Received: from mail-wi0-x235.google.com ([2a00:1450:400c:c05::235]) by casper.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1ZYvTd-00053S-Io for linux-arm-kernel@lists.infradead.org; Mon, 07 Sep 2015 12:24:51 +0000 Received: by wicge5 with SMTP id ge5so82214430wic.0 for ; Mon, 07 Sep 2015 05:24:27 -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=fh7x6vLZXZUBPKrd6qqXnCgFUkUKMXkANZPi6akCVro=; b=GMqKgcjavu9DxI3TCjDa5we/pcXml/4CGQ6anrZP01GCZV0FMRvWP0qXogMo1M0km3 7duyIhMjbgF2kAST9/TqOEunXqy7LCusDMh9ZUKd2Ibgms1CcpE/FRBZ4hOGmog/Y3eE Y5W7S9Gq7bIPGmmbiNWzatogk235IDsRZnEnyeiUSEa+zy3tKEnuqWOSS/uecTRLIqQI kYAwYHMLRi2PboUZ0BJR+DV4rw2QHb1wKPkMd+QqnI9lnfxTv07DXJm5QkMYDDjDbBf5 HYD6ZxJ1wA0qBHhEth+4xuwn63C2xYs+GlmR/EQeRIdR7pE6Ci6pCCbZ+Zhv6d/X++V9 W+Zg== X-Received: by 10.180.89.101 with SMTP id bn5mr19830327wib.20.1441628667925; Mon, 07 Sep 2015 05:24:27 -0700 (PDT) Received: from cizrna.lan ([109.72.12.78]) by smtp.gmail.com with ESMTPSA id cm6sm15438wib.22.2015.09.07.05.24.26 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 07 Sep 2015 05:24:27 -0700 (PDT) From: Tomeu Vizoso To: linux-kernel@vger.kernel.org Subject: [PATCH v4 12/22] pwm: Probe PWM chip devices on demand Date: Mon, 7 Sep 2015 14:23:37 +0200 Message-Id: <1441628627-5143-13-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_132449_735023_B3170CA9 X-CRM114-Status: GOOD ( 13.86 ) 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 , linux-pwm@vger.kernel.org, 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=-4.1 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 PWM chip 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 v4: None Changes in v3: None Changes in v2: None drivers/pwm/core.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/pwm/core.c b/drivers/pwm/core.c index 3f9df3ea3350..794a923df0d8 100644 --- a/drivers/pwm/core.c +++ b/drivers/pwm/core.c @@ -29,6 +29,7 @@ #include #include #include +#include #include @@ -516,6 +517,8 @@ static struct pwm_chip *of_node_to_pwmchip(struct device_node *np) { struct pwm_chip *chip; + of_device_probe(np); + mutex_lock(&pwm_lock); list_for_each_entry(chip, &pwm_chips, list)