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=-2.3 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_2 autolearn=no 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 82AFEC4BA12 for ; Wed, 26 Feb 2020 14:20:08 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 6407924685 for ; Wed, 26 Feb 2020 14:20:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727301AbgBZOUE (ORCPT ); Wed, 26 Feb 2020 09:20:04 -0500 Received: from mx2.suse.de ([195.135.220.15]:49564 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726278AbgBZOUE (ORCPT ); Wed, 26 Feb 2020 09:20:04 -0500 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.220.254]) by mx2.suse.de (Postfix) with ESMTP id 312D1B1FC; Wed, 26 Feb 2020 14:20:03 +0000 (UTC) Message-ID: <1582726796.17520.28.camel@suse.com> Subject: Re: [PATCH v2 5/8] usb: mausb_host: Introduce PAL processing From: Oliver Neukum To: Vladimir Stankovic , Greg KH Cc: linux-kernel , linux-usb , mausb-host-devel Date: Wed, 26 Feb 2020 15:19:56 +0100 In-Reply-To: <659eab4d-a995-d372-2c46-8b3d72ba13bc@displaylink.com> References: <659eab4d-a995-d372-2c46-8b3d72ba13bc@displaylink.com> Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.26.6 Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Sender: linux-usb-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org Hi, + atomic_inc(&urb->use_count); + + mausb_print_urb(urb); + + /* + * Masking URB_SHORT_NOT_OK flag as SCSI driver is adding it where it + * should not, so it is breaking the USB drive on the linux + */ + urb->transfer_flags &= ~URB_SHORT_NOT_OK; This is extremely drastic and will break drivers. Which driver causes the problems? Regards Oliver