From patchwork Fri Dec 16 11:30:04 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hans de Goede X-Patchwork-Id: 634723 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 73678C4332F for ; Fri, 16 Dec 2022 11:31:29 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229736AbiLPLb1 (ORCPT ); Fri, 16 Dec 2022 06:31:27 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38006 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231204AbiLPLbY (ORCPT ); Fri, 16 Dec 2022 06:31:24 -0500 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1E1965E08A for ; Fri, 16 Dec 2022 03:30:30 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1671190230; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=MO916Kd53BVi7a2Hr4CS8MIPPbK1R7JvQnITuZtwEHE=; b=d7mYxxjUGroRKAE3biBOKkoSlLvIpIclYt+0Yc1QcN0POlwIYKvlgIFnuSyKznud+mdE5l vgu9v4H9S6xNccNeKYOO70Y05roddqsWdBiVArhKw9Ras6xPv4wC1xvh5reNyXpyd8s8Kh jFHwLlk+/JHlvSXLSxX5HzekZrqox5w= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-5-NohJpmphMoC8jFtl_luQIw-1; Fri, 16 Dec 2022 06:30:27 -0500 X-MC-Unique: NohJpmphMoC8jFtl_luQIw-1 Received: from smtp.corp.redhat.com (int-mx10.intmail.prod.int.rdu2.redhat.com [10.11.54.10]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 1BC8A802C1B; Fri, 16 Dec 2022 11:30:26 +0000 (UTC) Received: from shalem.redhat.com (unknown [10.39.194.205]) by smtp.corp.redhat.com (Postfix) with ESMTP id B19AB400F5A; Fri, 16 Dec 2022 11:30:22 +0000 (UTC) From: Hans de Goede To: Mark Gross , Andy Shevchenko , Pavel Machek , Lee Jones , Linus Walleij , Daniel Scally , Laurent Pinchart , Mauro Carvalho Chehab , Sakari Ailus Cc: Hans de Goede , platform-driver-x86@vger.kernel.org, linux-leds@vger.kernel.org, linux-gpio@vger.kernel.org, Kate Hsuan , Mark Pearson , Andy Yeh , Yao Hao , linux-media@vger.kernel.org Subject: [PATCH v3 02/11] leds: led-class: Add __led_get() helper function Date: Fri, 16 Dec 2022 12:30:04 +0100 Message-Id: <20221216113013.126881-3-hdegoede@redhat.com> In-Reply-To: <20221216113013.126881-1-hdegoede@redhat.com> References: <20221216113013.126881-1-hdegoede@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.1 on 10.11.54.10 Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org Split out part of of_led_get() into a generic __led_get() helper function. This is a preparation patch for adding a generic (non devicetree specific) led_get() function. Signed-off-by: Hans de Goede --- drivers/leds/led-class.c | 30 ++++++++++++++++++------------ 1 file changed, 18 insertions(+), 12 deletions(-) diff --git a/drivers/leds/led-class.c b/drivers/leds/led-class.c index 7391d2cf1370..5f40110bd260 100644 --- a/drivers/leds/led-class.c +++ b/drivers/leds/led-class.c @@ -215,6 +215,23 @@ static int led_resume(struct device *dev) static SIMPLE_DEV_PM_OPS(leds_class_dev_pm_ops, led_suspend, led_resume); +static struct led_classdev *__led_get(struct device *led_dev) +{ + struct led_classdev *led_cdev; + + if (!led_dev) + return ERR_PTR(-EPROBE_DEFER); + + led_cdev = dev_get_drvdata(led_dev); + + if (!try_module_get(led_cdev->dev->parent->driver->owner)) { + put_device(led_cdev->dev); + return ERR_PTR(-ENODEV); + } + + return led_cdev; +} + /** * of_led_get() - request a LED device via the LED framework * @np: device node to get the LED device from @@ -226,7 +243,6 @@ static SIMPLE_DEV_PM_OPS(leds_class_dev_pm_ops, led_suspend, led_resume); struct led_classdev *of_led_get(struct device_node *np, int index) { struct device *led_dev; - struct led_classdev *led_cdev; struct device_node *led_node; led_node = of_parse_phandle(np, "leds", index); @@ -236,17 +252,7 @@ struct led_classdev *of_led_get(struct device_node *np, int index) led_dev = class_find_device_by_of_node(leds_class, led_node); of_node_put(led_node); - if (!led_dev) - return ERR_PTR(-EPROBE_DEFER); - - led_cdev = dev_get_drvdata(led_dev); - - if (!try_module_get(led_cdev->dev->parent->driver->owner)) { - put_device(led_cdev->dev); - return ERR_PTR(-ENODEV); - } - - return led_cdev; + return __led_get(led_dev); } EXPORT_SYMBOL_GPL(of_led_get);