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 F09DEC6FA99 for ; Fri, 10 Mar 2023 15:35:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233445AbjCJPfK (ORCPT ); Fri, 10 Mar 2023 10:35:10 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45592 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233098AbjCJPes (ORCPT ); Fri, 10 Mar 2023 10:34:48 -0500 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2A1F314783B for ; Fri, 10 Mar 2023 07:22:12 -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 dfw.source.kernel.org (Postfix) with ESMTPS id 68FDA61745 for ; Fri, 10 Mar 2023 15:17:11 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 5AF37C4339E; Fri, 10 Mar 2023 15:17:10 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1678461430; bh=5f1BYfMrrvm2K95uuqXp0UE0kR9Po0RPJl77QJ/a1a8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=a11NEXEO0w9Wu5DObZHq65i6wPc/HZQ3pPoWQeouJrSi7xoQXTTo3y3ROQi4uZwRx 5ogoseWCgMHngmsLplyLvRDetAzaw812w5e/b9HA3guzqWZkD3jzBdWKwo/mH51m6P iOm/TfVyuOK05R8hB/NJleRyV1BORjmrYdKFBbqk= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Yang Yingliang Subject: [PATCH 5.15 136/136] usb: gadget: uvc: fix missing mutex_unlock() if kstrtou8() fails Date: Fri, 10 Mar 2023 14:44:18 +0100 Message-Id: <20230310133711.349752118@linuxfoundation.org> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230310133706.811226272@linuxfoundation.org> References: <20230310133706.811226272@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: Yang Yingliang commit 7ebb605d2283fb2647b4fa82030307ce00bee436 upstream. If kstrtou8() fails, the mutex_unlock() is missed, move kstrtou8() before mutex_lock() to fix it up. Fixes: 0525210c9840 ("usb: gadget: uvc: Allow definition of XUs in configfs") Fixes: b3c839bd8a07 ("usb: gadget: uvc: Make bSourceID read/write") Signed-off-by: Yang Yingliang Link: https://lore.kernel.org/r/20230213070926.776447-1-yangyingliang@huawei.com Signed-off-by: Greg Kroah-Hartman --- drivers/usb/gadget/function/uvc_configfs.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) --- a/drivers/usb/gadget/function/uvc_configfs.c +++ b/drivers/usb/gadget/function/uvc_configfs.c @@ -546,6 +546,10 @@ static ssize_t uvcg_default_output_b_sou int result; u8 num; + result = kstrtou8(page, 0, &num); + if (result) + return result; + mutex_lock(su_mutex); /* for navigating configfs hierarchy */ opts_item = group->cg_item.ci_parent->ci_parent-> @@ -553,10 +557,6 @@ static ssize_t uvcg_default_output_b_sou opts = to_f_uvc_opts(opts_item); cd = &opts->uvc_output_terminal; - result = kstrtou8(page, 0, &num); - if (result) - return result; - mutex_lock(&opts->lock); cd->bSourceID = num; mutex_unlock(&opts->lock);