From patchwork Wed Jun 23 07:34:59 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Can Guo X-Patchwork-Id: 12339171 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=-11.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,USER_AGENT_GIT 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 6AFC1C4743C for ; Wed, 23 Jun 2021 07:37:04 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 4F91D611AC for ; Wed, 23 Jun 2021 07:37:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230004AbhFWHjT (ORCPT ); Wed, 23 Jun 2021 03:39:19 -0400 Received: from labrats.qualcomm.com ([199.106.110.90]:1666 "EHLO labrats.qualcomm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231187AbhFWHiy (ORCPT ); Wed, 23 Jun 2021 03:38:54 -0400 IronPort-SDR: PlpHPaV9G+9LPrjqzmJmTpxGlFQcvHyvVTCXoiOcZZKlSN6UI5h6yhhvHk2ZwdXfwUYgAIKElC kER9fK+WPngqcDx/BT6vN5k77fsts5KLVRt8PYh23JK6UKCmjSkOCpKMdTlyNj8uno7/qB1ybF RczCTkrnoptCLDrhDcw9XxhcoPO/sg5VqmY9sYLRSSm0J4PRR7Q/iSTZiDprxaNWHDQmEIWnyT dlxA0Jr3I1IXHndoaC/8+KZTknowdhhtVJZEIqMkRsQo+19J8Cbie2Jrsspv04cNxko4ZAIBSB 3iw= X-IronPort-AV: E=Sophos;i="5.83,293,1616482800"; d="scan'208";a="29780817" Received: from unknown (HELO ironmsg05-sd.qualcomm.com) ([10.53.140.145]) by labrats.qualcomm.com with ESMTP; 23 Jun 2021 00:36:36 -0700 X-QCInternal: smtphost Received: from stor-presley.qualcomm.com ([192.168.140.85]) by ironmsg05-sd.qualcomm.com with ESMTP; 23 Jun 2021 00:36:35 -0700 Received: by stor-presley.qualcomm.com (Postfix, from userid 359480) id E013121BC1; Wed, 23 Jun 2021 00:36:35 -0700 (PDT) From: Can Guo To: asutoshd@codeaurora.org, nguyenb@codeaurora.org, hongwus@codeaurora.org, ziqichen@codeaurora.org, linux-scsi@vger.kernel.org, kernel-team@android.com, cang@codeaurora.org Subject: [PATCH v4 00/10] Complementary changes for error handling Date: Wed, 23 Jun 2021 00:34:59 -0700 Message-Id: <1624433711-9339-1-git-send-email-cang@codeaurora.org> X-Mailer: git-send-email 2.7.4 Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org Commit cb7e6f05fce67c965194ac04467e1ba7bc70b069 ("scsi: ufs: core: Enable power management for wlun") makes the UFS device W-LU the supplier, based on which we need to make some changes to accomodate error handling. This series is tested by fault injections (to IRQ handler, UIC cmds and task abort where error handler can possibley be invoked) in all possible contexts, e.g., scaling, gating, runtime and system suspend/resume. Below changes are tested as a whole and based on 5.14/scsi-staging. Changes from v3: - Split the first change in v2 into 2 changes (to address comments from Adrian) - Removed the host_sem used in suspend/resume and use lock/unlock_system_sleep() in error handler (suggested by Bart). Changes from v2: - Added 3 more changes to this series. Changes from v1: - Rebased on series "Optimize host lock on TR send/compl paths and utilize UTRLCNR". - Minor update to the 6th change. Can Guo (10): scsi: ufs: Rename flags pm_op_in_progress and is_sys_suspended scsi: ufs: Add flags pm_op_in_progress and is_sys_suspended scsi: ufs: Update the return value of supplier pm ops scsi: ufs: Enable IRQ after enabling clocks in error handling preparation scsi: ufs: Remove a redundant tag check in ufshcd_queuecommand() scsi: ufs: Remove host_sem used in suspend/resume scsi: ufs: Simplify error handling preparation scsi: ufs: Update ufshcd_recover_pm_error() scsi: ufs: Update the fast abort path in ufshcd_abort() for PM requests scsi: ufs: Apply more limitations to user access drivers/scsi/ufs/ufs-debugfs.c | 27 +---- drivers/scsi/ufs/ufs-qcom.c | 2 +- drivers/scsi/ufs/ufs-sysfs.c | 105 ++++++----------- drivers/scsi/ufs/ufs_bsg.c | 16 +-- drivers/scsi/ufs/ufshcd.c | 262 ++++++++++++++++++++++------------------- drivers/scsi/ufs/ufshcd.h | 25 +++- 6 files changed, 212 insertions(+), 225 deletions(-)