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 X-Spam-Level: X-Spam-Status: No, score=-9.0 required=3.0 tests=BAYES_00,MAILING_LIST_MULTI, MENTIONS_GIT_HOSTING,SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id AAE46C4167B for ; Fri, 4 Dec 2020 08:31:30 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 5339A225A9 for ; Fri, 4 Dec 2020 08:31:30 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729064AbgLDIb1 (ORCPT ); Fri, 4 Dec 2020 03:31:27 -0500 Received: from mail-lj1-f193.google.com ([209.85.208.193]:42683 "EHLO mail-lj1-f193.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727783AbgLDIb0 (ORCPT ); Fri, 4 Dec 2020 03:31:26 -0500 Received: by mail-lj1-f193.google.com with SMTP id f18so5622278ljg.9 for ; Fri, 04 Dec 2020 00:31:10 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:content-transfer-encoding :in-reply-to; bh=5cPF/6zbncaQd1WjFYzcWr65VyxStJ3XiUmMpu6dyf4=; b=UNrALye49Bn5eyifZ1cUFQMPDJGTxepnWrQN72r5VLwXQTCtV0f91Wl3WyiI/n1EkD mBRH/upZLsufboPztlFHBg90p46JtPo9KLDROXZCHL0IZoobLk+EXWIg+PzsNKL+cajp XU5B+2+xxfKbGJx+D6krwTw5gbOo1pJGqVLOWueVEcN+BKwPaCDc+NsSKjs/nPgTl1ML lzaHCaaOh7OTe8sQMAZU3/JGck/UY9YFGaR+0dYbbiRbgjZHWHaPwGlh/VF97XZLTNp3 /B/qjza/d1qMlQDxNFL4wZ2hgqTmiBCpnAc6X7J+mmpAx/Tg2+RrDyBfu03osGuBrp5x EnoQ== X-Gm-Message-State: AOAM531SlzN0r6wKeN+sIzBqHRkgHNIWIjMCAng0NhMZav6v23RWCV2c YvUL+pXin3l9jYq4x0+Vf90= X-Google-Smtp-Source: ABdhPJzD21zOwvZgEfHyN2S+U87Y6AuKrY1hRLe8FPh5OEpUR38rb2jPPA4XdinPhJY8yjC4+0qDIg== X-Received: by 2002:a05:651c:1391:: with SMTP id k17mr3093902ljb.277.1607070644840; Fri, 04 Dec 2020 00:30:44 -0800 (PST) Received: from xi.terra (c-beaee455.07-184-6d6c6d4.bbcust.telenor.se. [85.228.174.190]) by smtp.gmail.com with ESMTPSA id v7sm1450095lfd.235.2020.12.04.00.30.43 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 04 Dec 2020 00:30:44 -0800 (PST) Received: from johan by xi.terra with local (Exim 4.93.0.4) (envelope-from ) id 1kl6Un-0001Y8-No; Fri, 04 Dec 2020 09:31:17 +0100 Date: Fri, 4 Dec 2020 09:31:17 +0100 From: Johan Hovold To: Ensar Karabudak Cc: linux-usb@vger.kernel.org, johan@kernel.org, bjorn@mork.no Subject: Re: [Bug Report] ttyUSB not detected after upgrade to 5.4.66+ Message-ID: References: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org On Fri, Dec 04, 2020 at 01:07:24AM +0300, Ensar Karabudak wrote: > Hi, > I have mentioned it here before: > https://github.com/raspberrypi/linux/issues/3964 > > I’ve run into an issue with the Quectel BG96 module. I do not have anything > on ttyUSB3 and 2. > It appears as though some changes in 5.4.66 have affected how USB2-USB3 is > treated? Thanks for the detailed report. Björn has already submitted a fix which will be backported to the stable trees soonish. You can find it here if you want to give it a try: https://git.kernel.org/pub/scm/linux/kernel/git/johan/usb-serial.git/commit/?h=usb-linus&id=c98fff7332dbd6e028969f8c2bda3d7bc7a024d8 Johan