From patchwork Thu Sep 16 17:02:08 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Adrian Hunter X-Patchwork-Id: 12499761 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 6CDB9C433F5 for ; Thu, 16 Sep 2021 17:15:03 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 4A2CE6112E for ; Thu, 16 Sep 2021 17:15:03 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S244423AbhIPRQT (ORCPT ); Thu, 16 Sep 2021 13:16:19 -0400 Received: from mga18.intel.com ([134.134.136.126]:62668 "EHLO mga18.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1345741AbhIPRLv (ORCPT ); Thu, 16 Sep 2021 13:11:51 -0400 X-IronPort-AV: E=McAfee;i="6200,9189,10109"; a="209703316" X-IronPort-AV: E=Sophos;i="5.85,299,1624345200"; d="scan'208";a="209703316" Received: from orsmga004.jf.intel.com ([10.7.209.38]) by orsmga106.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 16 Sep 2021 10:01:51 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.85,299,1624345200"; d="scan'208";a="583723726" Received: from ahunter-desktop.fi.intel.com ([10.237.72.174]) by orsmga004.jf.intel.com with ESMTP; 16 Sep 2021 10:01:48 -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 , Manivannan Sadhasivam , Wei Li , linux-scsi@vger.kernel.org Subject: [PATCH V4 0/3] scsi: ufs: Let devices remain runtime suspended during system suspend Date: Thu, 16 Sep 2021 20:02:08 +0300 Message-Id: <20210916170211.8564-1-adrian.hunter@intel.com> X-Mailer: git-send-email 2.17.1 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 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 | 255 ++++++++++++++++++++++++++++++++------------ drivers/scsi/ufs/ufshcd.h | 21 +++- include/scsi/scsi_device.h | 1 + include/trace/events/ufs.h | 5 +- 7 files changed, 231 insertions(+), 78 deletions(-) Regards Adrian