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_1 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 68F8BC433E0 for ; Sat, 16 May 2020 01:49:04 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 54468207CB for ; Sat, 16 May 2020 01:49:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726541AbgEPBtB (ORCPT ); Fri, 15 May 2020 21:49:01 -0400 Received: from mail-pl1-f193.google.com ([209.85.214.193]:42665 "EHLO mail-pl1-f193.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726247AbgEPBtB (ORCPT ); Fri, 15 May 2020 21:49:01 -0400 Received: by mail-pl1-f193.google.com with SMTP id k19so1632337pll.9; Fri, 15 May 2020 18:49:00 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:cc:references:from:autocrypt :message-id:date:user-agent:mime-version:in-reply-to :content-language:content-transfer-encoding; bh=yrLeDS8QFWAcUfi/7i8KWUQD7BCqRDUd/m8UQW8uxws=; b=qHzDkMFuFeM5dLs64+f0yop6zkhqhHyCI2nY6qFcX9lUF4DCHeQmKnw++lkc0bFfgf /kVFr2wl5+KYpal6dVt1g9GruuOjsHLoHGIgumWfmYmG4KiZkoTfz0/K7zAm2xn2bOrk YPOBSMERUJl0GS9qlGhQzw2KOxAx3x55vcufZFWPNLXsclWI/z30XkNeXz7EpZWLQ7xS cxGJ+zT6MTPKKjNjCyC5LQ5Pe50TTvq8UzDnJfyI2hmzX8lHBNP8ZRD0f/t0OLGjOKrp 6N6Slis8hNgt3TDp1y9bTRlsz9j0jvauEsDdJqUQJHhjPbfTAW8t/TGwHBWuDFXDViUZ 2gcQ== X-Gm-Message-State: AOAM530li3BrRs1hJdz9DsTwqDKgzplYBVhy5DHNDegJUjj2OKoyYkos U5PE4Nk7HKNowDT603VVniE= X-Google-Smtp-Source: ABdhPJxYBh+wCgL+cxPf1r3Ll6WSEPxZ/z37GJzLJVrR0RkqZ4lAchXCRbVgMSM7wSCts0wJYNJGvA== X-Received: by 2002:a17:90a:154e:: with SMTP id y14mr6765748pja.180.1589593740194; Fri, 15 May 2020 18:49:00 -0700 (PDT) Received: from ?IPv6:2601:647:4000:d7:f99a:ee92:9332:42a? ([2601:647:4000:d7:f99a:ee92:9332:42a]) by smtp.gmail.com with ESMTPSA id p6sm2640161pgl.26.2020.05.15.18.48.58 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 15 May 2020 18:48:59 -0700 (PDT) Subject: Re: [RFC PATCH 03/13] scsi: scsi_dh: Introduce scsi_dh_ufshpb To: Avri Altman , "James E . J . Bottomley" , "Martin K . Petersen" , linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org Cc: alim.akhtar@samsung.com, asutoshd@codeaurora.org, Zang Leigang , Avi Shchislowski , Bean Huo , cang@codeaurora.org, stanley.chu@mediatek.com, MOHAMMED RAFIQ KAMAL BASHA , Sang-yoon Oh , yongmyung lee , Jinyoung CHOI References: <1589538614-24048-1-git-send-email-avri.altman@wdc.com> <1589538614-24048-4-git-send-email-avri.altman@wdc.com> From: Bart Van Assche Autocrypt: addr=bvanassche@acm.org; prefer-encrypt=mutual; keydata= mQENBFSOu4oBCADcRWxVUvkkvRmmwTwIjIJvZOu6wNm+dz5AF4z0FHW2KNZL3oheO3P8UZWr LQOrCfRcK8e/sIs2Y2D3Lg/SL7qqbMehGEYcJptu6mKkywBfoYbtBkVoJ/jQsi2H0vBiiCOy fmxMHIPcYxaJdXxrOG2UO4B60Y/BzE6OrPDT44w4cZA9DH5xialliWU447Bts8TJNa3lZKS1 AvW1ZklbvJfAJJAwzDih35LxU2fcWbmhPa7EO2DCv/LM1B10GBB/oQB5kvlq4aA2PSIWkqz4 3SI5kCPSsygD6wKnbRsvNn2mIACva6VHdm62A7xel5dJRfpQjXj2snd1F/YNoNc66UUTABEB AAG0JEJhcnQgVmFuIEFzc2NoZSA8YnZhbmFzc2NoZUBhY20ub3JnPokBOQQTAQIAIwUCVI67 igIbAwcLCQgHAwIBBhUIAgkKCwQWAgMBAh4BAheAAAoJEHFcPTXFzhAJ8QkH/1AdXblKL65M Y1Zk1bYKnkAb4a98LxCPm/pJBilvci6boefwlBDZ2NZuuYWYgyrehMB5H+q+Kq4P0IBbTqTa jTPAANn62A6jwJ0FnCn6YaM9TZQjM1F7LoDX3v+oAkaoXuq0dQ4hnxQNu792bi6QyVdZUvKc macVFVgfK9n04mL7RzjO3f+X4midKt/s+G+IPr4DGlrq+WH27eDbpUR3aYRk8EgbgGKvQFdD CEBFJi+5ZKOArmJVBSk21RHDpqyz6Vit3rjep7c1SN8s7NhVi9cjkKmMDM7KYhXkWc10lKx2 RTkFI30rkDm4U+JpdAd2+tP3tjGf9AyGGinpzE2XY1K5AQ0EVI67igEIAKiSyd0nECrgz+H5 PcFDGYQpGDMTl8MOPCKw/F3diXPuj2eql4xSbAdbUCJzk2ETif5s3twT2ER8cUTEVOaCEUY3 eOiaFgQ+nGLx4BXqqGewikPJCe+UBjFnH1m2/IFn4T9jPZkV8xlkKmDUqMK5EV9n3eQLkn5g lco+FepTtmbkSCCjd91EfThVbNYpVQ5ZjdBCXN66CKyJDMJ85HVr5rmXG/nqriTh6cv1l1Js T7AFvvPjUPknS6d+BETMhTkbGzoyS+sywEsQAgA+BMCxBH4LvUmHYhpS+W6CiZ3ZMxjO8Hgc ++w1mLeRUvda3i4/U8wDT3SWuHcB3DWlcppECLkAEQEAAYkBHwQYAQIACQUCVI67igIbDAAK CRBxXD01xc4QCZ4dB/0QrnEasxjM0PGeXK5hcZMT9Eo998alUfn5XU0RQDYdwp6/kMEXMdmT oH0F0xB3SQ8WVSXA9rrc4EBvZruWQ+5/zjVrhhfUAx12CzL4oQ9Ro2k45daYaonKTANYG22y //x8dLe2Fv1By4SKGhmzwH87uXxbTJAUxiWIi1np0z3/RDnoVyfmfbbL1DY7zf2hYXLLzsJR mSsED/1nlJ9Oq5fALdNEPgDyPUerqHxcmIub+pF0AzJoYHK5punqpqfGmqPbjxrJLPJfHVKy goMj5DlBMoYqEgpbwdUYkH6QdizJJCur4icy8GUNbisFYABeoJ91pnD4IGei3MTdvINSZI5e Message-ID: <80b0ffae-7af4-6d06-77e7-a8a97aaa9a05@acm.org> Date: Fri, 15 May 2020 18:48:58 -0700 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.8.0 MIME-Version: 1.0 In-Reply-To: <1589538614-24048-4-git-send-email-avri.altman@wdc.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-scsi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org On 2020-05-15 03:30, Avri Altman wrote: > +static int ufshpb_attach(struct scsi_device *sdev) > +{ > + struct ufshpb_dh_data *h; > + > + h = kzalloc(sizeof(*h), GFP_KERNEL); > + if (!h) > + return SCSI_DH_NOMEM; > + > + sdev_printk(KERN_INFO, sdev, "%s: attached to sdev (lun) %llu\n", > + UFSHPB_NAME, sdev->lun); > + > + sdev->handler_data = h; > + > + return SCSI_DH_OK; > +} I think that all other SCSI device handlers check in their .attach function whether the @sdev SCSI device is supported by the device handler. I don't see any such check in the above function? Bart.