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=-3.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT 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 BBD5FC43331 for ; Tue, 12 Nov 2019 17:37:52 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 933CF214E0 for ; Tue, 12 Nov 2019 17:37:52 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726953AbfKLRhw (ORCPT ); Tue, 12 Nov 2019 12:37:52 -0500 Received: from mail-pl1-f196.google.com ([209.85.214.196]:45956 "EHLO mail-pl1-f196.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726912AbfKLRhw (ORCPT ); Tue, 12 Nov 2019 12:37:52 -0500 Received: by mail-pl1-f196.google.com with SMTP id w7so720405plz.12 for ; Tue, 12 Nov 2019 09:37:51 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=0erNgzRVlSJA+jnLq/QuizqiD0WjsCgHdeR3E3h3X88=; b=WK6QTbCpmua5PQyT34D+4fKS9w765RDY0f5iyR4cMRopwrITl8Jkx3DNhlLmqAnblI VmXsV8Uwai9w5cWsYHR3cqW8HnszJgT8PBJjHKsMqy3J/h68yN5pyzOwmebC0VVMryiN AtIfLqcyJ26dVt6Sb5hnhpm4TwEg21vEiBIegaoHz+kThSXnHkaZ7kR8iGmfh93VtBpe RGdZkHPSZBCddMpmqm+ctG9/8n8aL/WHg4wfey5I3GZY8bN1QUEeY8z480tmCloRE4id fhI/Zk1ZN0LkHDK7402bH2amorb/7JqP3yNb7154W/4Jk+T15bkWVRpEoF3+vpEdShKd dQdg== X-Gm-Message-State: APjAAAVA/z6Ejk4Ryc9ib3K3pH5RjkgUcmIOYLQle9MCAtnL0tkhOXqw lPYSHFX1SwypUv6viVQbVRI8HkoG X-Google-Smtp-Source: APXvYqzr7uG41SjjFVPaqGkkPFu1JDIoBJNF2t09lkeamMvPaD8N8GbNvp5liLlzdyoX8JxCfThY2A== X-Received: by 2002:a17:902:8308:: with SMTP id bd8mr32943727plb.86.1573580271304; Tue, 12 Nov 2019 09:37:51 -0800 (PST) Received: from desktop-bart.svl.corp.google.com ([2620:15c:2cd:202:4308:52a3:24b6:2c60]) by smtp.gmail.com with ESMTPSA id w19sm12930969pga.83.2019.11.12.09.37.49 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 12 Nov 2019 09:37:50 -0800 (PST) From: Bart Van Assche To: "Martin K . Petersen" , "James E . J . Bottomley" Cc: Bean Huo , Avri Altman , Asutosh Das , Vignesh Raghavendra , Can Guo , linux-scsi@vger.kernel.org, Bart Van Assche Subject: [PATCH v5 0/4] Simplify and optimize the UFS driver Date: Tue, 12 Nov 2019 09:37:39 -0800 Message-Id: <20191112173743.141503-1-bvanassche@acm.org> X-Mailer: git-send-email 2.24.0.rc1.363.gb1bccd3e3d-goog MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-scsi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org Hello Martin, This patch series that simplifies and optimizes the UFS driver. Please consider this patch series for kernel v5.5. Thanks, Bart. Changes compared to v4: - Reverted back to scsi_block_requests() / scsi_unblock_requests() for the UFS error handler. - Added a new patch that serializes error handling and command submission. - Fixed a blk_mq_init_queue() return value check. Changes compared to v3: - Left out "scsi" from the name of the functions that suspend and resume command processing. Changes compared to v2: - Use a separate tag set for TMF tags. Changes compared to v1: - Use the block layer tag infrastructure for managing TMF tags. Bart Van Assche (4): ufs: Serialize error handling and command submission ufs: Avoid busy-waiting by eliminating tag conflicts ufs: Use blk_{get,put}_request() to allocate and free TMFs ufs: Simplify the clock scaling mechanism implementation drivers/scsi/ufs/ufshcd.c | 396 +++++++++++++++++--------------------- drivers/scsi/ufs/ufshcd.h | 21 +- 2 files changed, 186 insertions(+), 231 deletions(-)