From patchwork Tue Sep 26 08:14:44 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Damien Le Moal X-Patchwork-Id: 13398829 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id E205CE7D24D for ; Tue, 26 Sep 2023 08:15:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233878AbjIZIPV (ORCPT ); Tue, 26 Sep 2023 04:15:21 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43064 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229776AbjIZIPR (ORCPT ); Tue, 26 Sep 2023 04:15:17 -0400 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 936ECB4; Tue, 26 Sep 2023 01:15:10 -0700 (PDT) Received: by smtp.kernel.org (Postfix) with ESMTPSA id A0EEDC433C8; Tue, 26 Sep 2023 08:15:08 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1695716110; bh=Ae9fgOKJgOYcoF9tLXrNWjYClA2QHehJv44Xrwl/UXw=; h=From:To:Cc:Subject:Date:From; b=FqRxt2aRTtsNC25aHqklCgF0i7YLTuk1gr+uQbuLrClQjWkE6U/uL9kNeYnpzBa/o ElTx6ez9EW7HhtOEg6dW7l26oIwFnyVnxZ2IcQVVIaQHV9ZB8/bhO8xxs9+0aH8gYV /oPt/4svg2VOst1pUy8nxNoPWqEsrJGO2BGPSEYX5txsys1EdePHu+I4gr7eOP+a8V Vafo0GYMMlBJ7erRYyTSs6V/TTKw8bz+b1ytEB6EmdovKcTv6+GQZJCB26mgo1PYb4 S4ieb0ZESQ64p2TJcPEvdm4MyfwOmnd1YRB2LkpeSVXkDSY1foZw1jLwrXZPwl3/Eg SJZ4fyWq/AH2Q== From: Damien Le Moal To: linux-ide@vger.kernel.org Cc: linux-scsi@vger.kernel.org, "Martin K . Petersen" , John Garry , Rodrigo Vivi , Paul Ausbeck , Kai-Heng Feng , Joe Breuer , Geert Uytterhoeven , Chia-Lin Kao Subject: [PATCH v7 00/23] Fix libata suspend/resume handling and code cleanup Date: Tue, 26 Sep 2023 17:14:44 +0900 Message-ID: <20230926081507.69346-1-dlemoal@kernel.org> X-Mailer: git-send-email 2.41.0 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org The first 9 patches of this series fix several issues with suspend/resume power management operations in scsi and libata. The most significant changes introduced are in patch 4 and 5, where the manage_start_stop flag of scsi devices is split into the manage_system_start_stop and manage_runtime_start_stop flags to allow keeping scsi runtime power operations for spining up/down ATA devices but have libata do its own system suspend/resume device power state management using EH. The remaining patches are code cleanup that do not introduce any significant functional change. This series was tested on qemu and on various PCs and servers. I am CC-ing people who recently reported issues with suspend/resume. Additional testing would be much appreciated. Changes from v6: * Changed patch 9 to use a bool for the new suspended flag. Changes from v5: * Typo and style corrections in patch 4 commit message * Changed patch 9 to use a new flag to track a disk suspended state instead of using the scsi device state * Added review tags Changes from v4: * Remove ata_scsi_dev_alloc() function in patch 3, coding it directly in ata_scsi_slave_alloc() * Correct typo in patch 19 commit message * Added Tested and review tags Changes from v3: * Corrected patch 1 (typo in commit message and WARN_ON() removal) * Changed path 3 as suggested by Niklas (moved definition of ->slave_alloc) * Rebased on rc2 * Added review tags Changes from v2: * Added patch 4 as simply disabling manage_start_stop from libata was breaking individual disk runtime suspend/autosuspend. Patch 5 was reworked accordingly to the changes in patch 4. * Fixed patch 3: applying the link creation was missing and the link creation itself was also incorrect, preventing sd probe to execute correctly. Thanks to Geert for testing and reporting this issue. * Split the "Fix delayed scsi_rescan_device() execution" patch into patch 6 (scsi part) and patch 7 (ata part). * Modified patch 9 to not call sd_shutdown() from sd_remove() for devices that are not running. * Added Chia-Lin Tested tag to unchanged patches Changes from v1: * Added patch 8 and 9 to fix compilation warnings with W=1 * Addressed John comment in patch 19 * Fixed patch 20 commit message (Sergei) * Added Hannes Review tag Damien Le Moal (23): ata: libata-core: Fix ata_port_request_pm() locking ata: libata-core: Fix port and device removal ata: libata-scsi: link ata port and scsi device scsi: sd: Differentiate system and runtime start/stop management ata: libata-scsi: Disable scsi device manage_system_start_stop scsi: Do not attempt to rescan suspended devices ata: libata-scsi: Fix delayed scsi_rescan_device() execution ata: libata-core: Do not register PM operations for SAS ports scsi: sd: Do not issue commands to suspended disks on shutdown ata: libata-core: Fix compilation warning in ata_dev_config_ncq() ata: libata-eh: Fix compilation warning in ata_eh_link_report() scsi: Remove scsi device no_start_on_resume flag ata: libata-scsi: Cleanup ata_scsi_start_stop_xlat() ata: libata-core: Synchronize ata_port_detach() with hotplug ata: libata-core: Detach a port devices on shutdown ata: libata-core: Remove ata_port_suspend_async() ata: libata-core: Remove ata_port_resume_async() ata: libata-core: Do not poweroff runtime suspended ports ata: libata-core: Do not resume runtime suspended ports ata: libata-sata: Improve ata_sas_slave_configure() ata: libata-eh: Improve reset error messages ata: libata-eh: Reduce "disable device" message verbosity ata: libata: Cleanup inline DMA helper functions drivers/ata/libata-core.c | 242 +++++++++++++++++++++++++-------- drivers/ata/libata-eh.c | 76 +++++++++-- drivers/ata/libata-sata.c | 5 +- drivers/ata/libata-scsi.c | 142 ++++++++++--------- drivers/ata/libata-transport.c | 9 +- drivers/ata/libata.h | 6 + drivers/firewire/sbp2.c | 9 +- drivers/scsi/scsi_scan.c | 18 ++- drivers/scsi/sd.c | 102 +++++++++++--- drivers/scsi/sd.h | 1 + include/linux/libata.h | 26 ++-- include/scsi/scsi_device.h | 4 +- include/scsi/scsi_host.h | 2 +- 13 files changed, 457 insertions(+), 185 deletions(-)