From patchwork Thu May 13 05:55:12 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Can Guo X-Patchwork-Id: 12255169 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 58B00C433ED for ; Thu, 13 May 2021 05:55:32 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0A79B613E6 for ; Thu, 13 May 2021 05:55:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231131AbhEMF4j (ORCPT ); Thu, 13 May 2021 01:56:39 -0400 Received: from labrats.qualcomm.com ([199.106.110.90]:12216 "EHLO labrats.qualcomm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229935AbhEMF4i (ORCPT ); Thu, 13 May 2021 01:56:38 -0400 IronPort-SDR: 840J3Z5ww+WPPqZBM7kYpcHaW539/9uXFpaRsRFbys8RGxn9Hbnwv8W3TFJfzt+csU8UQ+d+xz IoIuTy4DcDmkNpasKHRJM7xJy4clVud3IyxKgjTNRRfD7kTi2WB4vWOGmbpGq0nrzAlwx7HO0B thWaS5N/qv1yuO2JwmvOEON8gJ3xbn6nP2u+Je9xd1+IhSnyzU7/AtetO/wKfTB5CDkrbWxmd4 5gZUt3JThrLLOkRWj1oNbnt1ZyiSduT1XWrhckqclWksAmDbwKjboa6vnpS4NCTo5kO2pvcteq 0nk= X-IronPort-AV: E=Sophos;i="5.82,296,1613462400"; d="scan'208";a="47866512" Received: from unknown (HELO ironmsg03-sd.qualcomm.com) ([10.53.140.143]) by labrats.qualcomm.com with ESMTP; 12 May 2021 22:55:30 -0700 X-QCInternal: smtphost Received: from stor-presley.qualcomm.com ([192.168.140.85]) by ironmsg03-sd.qualcomm.com with ESMTP; 12 May 2021 22:55:28 -0700 Received: by stor-presley.qualcomm.com (Postfix, from userid 359480) id 966D721A85; Wed, 12 May 2021 22:55:29 -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 v1 0/6] Complementary changes for error handling Date: Wed, 12 May 2021 22:55:12 -0700 Message-Id: <1620885319-15151-1-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-queue. Can Guo (6): scsi: ufs: Differentiate status between hba pm ops and wl pm ops scsi: ufs: Update the return value of supplier pm ops scsi: ufs: Simplify error handling preparation scsi: ufs: Update ufshcd_recover_pm_error() scsi: ufs: Let host_sem cover the entire system suspend/resume scsi: ufs: Update the fast abort path in ufshcd_abort() for PM requests drivers/scsi/ufs/ufshcd.c | 180 +++++++++++++++++++++++++--------------------- drivers/scsi/ufs/ufshcd.h | 4 +- 2 files changed, 103 insertions(+), 81 deletions(-)