From mboxrd@z Thu Jan 1 00:00:00 1970 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 408D8C678D4 for ; Tue, 7 Mar 2023 17:24:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229817AbjCGRYV (ORCPT ); Tue, 7 Mar 2023 12:24:21 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41740 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231466AbjCGRX5 (ORCPT ); Tue, 7 Mar 2023 12:23:57 -0500 Received: from ams.source.kernel.org (ams.source.kernel.org [IPv6:2604:1380:4601:e00::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 0DFE79B9AE for ; Tue, 7 Mar 2023 09:19:23 -0800 (PST) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id 968A3B819AC for ; Tue, 7 Mar 2023 17:19:22 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id CB316C433D2; Tue, 7 Mar 2023 17:19:20 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1678209561; bh=0wdxBqjs4Evg2/qMTg+rUeZAjkOMlookhVWkA7DrCQU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=c93sb4VHz1PYyq0rAEaKzYWX4+EK7CkRl+sHg02B73lanN59OXaZbZi/A312bET8C AfSMXjTvxpecvEPYzKoxrSyTm59uANfKNrqaKsuSWZX4L4QpkeJrr6esedO0cx/4Xb xDclWsYs0xQzzOblv/7NYGW4lXVNbXHYMSY/HbHQ= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Andy Shevchenko , Linus Walleij , Hans de Goede , Lee Jones , Sasha Levin Subject: [PATCH 6.2 0227/1001] leds: led-class: Add missing put_device() to led_put() Date: Tue, 7 Mar 2023 17:49:59 +0100 Message-Id: <20230307170031.732438116@linuxfoundation.org> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230307170022.094103862@linuxfoundation.org> References: <20230307170022.094103862@linuxfoundation.org> User-Agent: quilt/0.67 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Hans de Goede [ Upstream commit 445110941eb94709216363f9d807d2508e64abd7 ] led_put() is used to "undo" a successful of_led_get() call, of_led_get() uses class_find_device_by_of_node() which returns a reference to the device which must be free-ed with put_device() when the caller is done with it. Add a put_device() call to led_put() to free the reference returned by class_find_device_by_of_node(). And also add a put_device() in the error-exit case of try_module_get() failing. Fixes: 699a8c7c4bd3 ("leds: Add of_led_get() and led_put()") Reviewed-by: Andy Shevchenko Reviewed-by: Linus Walleij Signed-off-by: Hans de Goede Signed-off-by: Lee Jones Link: https://lore.kernel.org/r/20230120114524.408368-2-hdegoede@redhat.com Signed-off-by: Sasha Levin --- drivers/leds/led-class.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/leds/led-class.c b/drivers/leds/led-class.c index 6a8ea94834fa3..7391d2cf1370a 100644 --- a/drivers/leds/led-class.c +++ b/drivers/leds/led-class.c @@ -241,8 +241,10 @@ struct led_classdev *of_led_get(struct device_node *np, int index) led_cdev = dev_get_drvdata(led_dev); - if (!try_module_get(led_cdev->dev->parent->driver->owner)) + if (!try_module_get(led_cdev->dev->parent->driver->owner)) { + put_device(led_cdev->dev); return ERR_PTR(-ENODEV); + } return led_cdev; } @@ -255,6 +257,7 @@ EXPORT_SYMBOL_GPL(of_led_get); void led_put(struct led_classdev *led_cdev) { module_put(led_cdev->dev->parent->driver->owner); + put_device(led_cdev->dev); } EXPORT_SYMBOL_GPL(led_put); -- 2.39.2