Received: by 2002:a05:6a10:1287:0:0:0:0 with SMTP id d7csp2608271pxv;
        Sat, 24 Jul 2021 23:42:10 -0700 (PDT)
X-Google-Smtp-Source: ABdhPJyX3OvJvGhdcDsfKZ6FaTk1fLPjvJf0HZGgFd5/TozZl/J51kapw5Wa/cs2NILKwJhPRBoh
X-Received: by 2002:a17:906:17c4:: with SMTP id u4mr12116864eje.481.1627195330597;
        Sat, 24 Jul 2021 23:42:10 -0700 (PDT)
ARC-Seal: i=1; a=rsa-sha256; t=1627195330; cv=none;
        d=google.com; s=arc-20160816;
        b=O+58n1hERup5R/mG8LsgRbgcnygXoxKiHb/yGlozkpo4J5b32hxlR0FvjqorJY2WYP
         xQraog3vrtId5HTmiI91jhjpvameHo/BBWlH0FWXfFJ6nMkC2Agnc0wHbpg8XVCoWNR7
         CEBY/HuOtTtBPa4oXd+6v4cJeCjksGuKJOHzLXHDzfbpzKCtpAuc30ynRWlQVdwYKiwI
         mQWGr9GmQYMM5eld4/4KgC2/fa6YEQ8tiZ7akS5pjsZgxX6QX9/vNuDjGpTOVsj4qlx1
         Jn5KKRxvz+OMXD3M56e1uutT6mRZa5aVTRTB5Qgwab9gshxV3Z2kuXc9eOTeDAP95iVH
         Y0ew==
ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816;
        h=list-id:precedence:in-reply-to:content-disposition:mime-version
         :references:message-id:subject:cc:to:from:date:dkim-signature;
        bh=OwGTaFDFrjidOs3L9+pS5jm4ED5BS4+FMWyoDZH657o=;
        b=0a62vnUYXB4EMFvRbzc6rqNJrXmvcgepfuKgcH66xB3bKdqf5NOOTPCAk99kyOu9Ie
         nhEO+iKzLC8hxHKE70nu9Gab3By3qiVV6Lw34Iu36ZS6SKVje5peHu8KASgWRoMM6qC6
         APjCkeowwEQgwk9+IR+n5u9r+Sex65s5U6sBqabkdOIX95t78Th5xyrZavDukAnociLc
         VRE4fuEKnWl8XZxNN0AX0fGGu7O4D/V/JQkqxYUEEqG0myC3WGakJdRAw/8L83CX4X0r
         6F8v2DipD/6mJ+MTjeZ8ksAnJLRP5r3Ewv3t3ufhf6DmpgT39XuR5Ya1G8s/Q69wVc3Y
         nc/g==
ARC-Authentication-Results: i=1; mx.google.com;
       dkim=pass header.i=@linuxfoundation.org header.s=korg header.b=y37Ya1Va;
       spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org;
       dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=linuxfoundation.org
Return-Path: <linux-kernel-owner@vger.kernel.org>
Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18])
        by mx.google.com with ESMTP id y21si14508817edt.264.2021.07.24.23.41.47;
        Sat, 24 Jul 2021 23:42:10 -0700 (PDT)
Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18;
Authentication-Results: mx.google.com;
       dkim=pass header.i=@linuxfoundation.org header.s=korg header.b=y37Ya1Va;
       spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org;
       dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=linuxfoundation.org
Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand
        id S230312AbhGYF7t (ORCPT <rfc822;linux.sihyeon@gmail.com>
        + 99 others); Sun, 25 Jul 2021 01:59:49 -0400
Received: from mail.kernel.org ([198.145.29.99]:44988 "EHLO mail.kernel.org"
        rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP
        id S229460AbhGYF7s (ORCPT <rfc822;linux-kernel@vger.kernel.org>);
        Sun, 25 Jul 2021 01:59:48 -0400
Received: by mail.kernel.org (Postfix) with ESMTPSA id B19DD608FE;
        Sun, 25 Jul 2021 06:40:17 +0000 (UTC)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org;
        s=korg; t=1627195219;
        bh=OwGTaFDFrjidOs3L9+pS5jm4ED5BS4+FMWyoDZH657o=;
        h=Date:From:To:Cc:Subject:References:In-Reply-To:From;
        b=y37Ya1Var41r5KlsN0PXt5TY7QHFfkahYvdidxxvO08hin1y5sPUzZ7SuRNtjmz6a
         TbHJDknj4f0PFuoAhfO8l1pulMNz95KW1UQPAzZmiR8OPc6soq+dXd9hNdiTCRoZ/B
         1jAtgG9vi/nT8eBC0gN5rfR2Jbva7RNRAw85iij8=
Date:   Sun, 25 Jul 2021 08:40:14 +0200
From:   Greg KH <gregkh@linuxfoundation.org>
To:     Salah Triki <salah.triki@gmail.com>
Cc:     Mauro Carvalho Chehab <mchehab@kernel.org>,
        linux-media@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] usb: stkwebcam: update the reference count of the usb
 device structure
Message-ID: <YP0HTqZIh73YBR6f@kroah.com>
References: <20210724195831.GA509821@pc>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <20210724195831.GA509821@pc>
Precedence: bulk
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org

On Sat, Jul 24, 2021 at 08:58:31PM +0100, Salah Triki wrote:
> Use usb_get_dev() and usb_put_dev() in order to update the reference
> count of the usb device structure.

Why?