From patchwork Thu Sep 30 12:42:21 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Adrian Hunter X-Patchwork-Id: 12528223 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id DB99AC433F5 for ; Thu, 30 Sep 2021 12:42:42 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id C471D61528 for ; Thu, 30 Sep 2021 12:42:42 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1350978AbhI3MoY (ORCPT ); Thu, 30 Sep 2021 08:44:24 -0400 Received: from mga17.intel.com ([192.55.52.151]:37546 "EHLO mga17.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1350675AbhI3MoY (ORCPT ); Thu, 30 Sep 2021 08:44:24 -0400 X-IronPort-AV: E=McAfee;i="6200,9189,10122"; a="205327576" X-IronPort-AV: E=Sophos;i="5.85,336,1624345200"; d="scan'208";a="205327576" Received: from fmsmga007.fm.intel.com ([10.253.24.52]) by fmsmga107.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 30 Sep 2021 05:42:40 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.85,336,1624345200"; d="scan'208";a="479879755" Received: from ahunter-desktop.fi.intel.com ([10.237.72.76]) by fmsmga007.fm.intel.com with ESMTP; 30 Sep 2021 05:42:37 -0700 From: Adrian Hunter To: "Martin K . Petersen" Cc: "James E . J . Bottomley" , Bean Huo , Avri Altman , Alim Akhtar , Can Guo , Asutosh Das , Bart Van Assche , Kiwoong Kim , Manivannan Sadhasivam , Wei Li , linux-scsi@vger.kernel.org Subject: [PATCH V6 0/3] scsi: ufs: Let devices remain runtime suspended during system suspend Date: Thu, 30 Sep 2021 15:42:21 +0300 Message-Id: <20210930124224.114031-1-adrian.hunter@intel.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Organization: Intel Finland Oy, Registered Address: PL 281, 00181 Helsinki, Business Identity Code: 0357606 - 4, Domiciled in Helsinki Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org Hi UFS devices can remain runtime suspended at system suspend time, if the conditions are right. Add support for that, first fixing the impediments. Changes in V6: scsi: ufs: Fix error handler clear ua deadlock Ensure data byte count bits 1:0 are 11b Use ufshcd_compose_dev_cmd() to set up command Changes in V5: scsi: ufs: Fix error handler clear ua deadlock Update commit message Try to abort REQUEST SENSE if it times out Changes in V4: scsi: ufs: Fix error handler clear ua deadlock Do request-sense directly Changes in V3: scsi: ufs: Fix error handler clear ua deadlock Correct commit message. Amend stable tags to add dependent cherry picks Changes in V2: scsi: ufs: Let devices remain runtime suspended during system suspend The ufs-hisi driver uses different RPM and SPM, but it is made explicit by a new parameter to suspend prepare. Adrian Hunter (3): scsi: ufs: Fix error handler clear ua deadlock scsi: ufs: Fix runtime PM dependencies getting broken scsi: ufs: Let devices remain runtime suspended during system suspend drivers/scsi/scsi_pm.c | 16 ++- drivers/scsi/ufs/ufs-hisi.c | 8 +- drivers/scsi/ufs/ufs.h | 3 +- drivers/scsi/ufs/ufshcd.c | 296 ++++++++++++++++++++++++++++++-------------- drivers/scsi/ufs/ufshcd.h | 24 +++- include/scsi/scsi_device.h | 1 + include/trace/events/ufs.h | 5 +- 7 files changed, 251 insertions(+), 102 deletions(-) Regards Adrian