From patchwork Wed Sep 20 13:54:31 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: 13392815 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 3AC3ECE79D6 for ; Wed, 20 Sep 2023 13:56:06 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236605AbjITN4J (ORCPT ); Wed, 20 Sep 2023 09:56:09 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50028 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236616AbjITNzj (ORCPT ); Wed, 20 Sep 2023 09:55:39 -0400 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 629181BF; Wed, 20 Sep 2023 06:55:10 -0700 (PDT) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 7FC21C433C9; Wed, 20 Sep 2023 13:55:08 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1695218110; bh=UV6LXx9s3TSryZ3qsIn1nQK8SJjbA4fQxR6ePepNgLg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=nplZTTzaFWe2h9LTlx8n42aeF9bV09+zrk4FzcF0aaqS0akdD2SPgjWz4M2w4fcAr wKV7Rj/a+jGZC2W/hVEw1B1dKYK/smNkfdOHqHqHO99WYzlyNxDI2eWSqpuCpqpMSA sGp8vrnYysxbgXz2WKafIQiaSdOCD2glLnIu4mYjHyeIufLI8IuS1ycyM1KC5b9/7y XpqUhmbE7deUnd391r2vzHmNu9/fHp6Ti1Mmx2scplCZEyoMh0IMaAYBoEUkkfRyah jC3+6mmn5r6sJhSJOb3uk4WyZmclFKjBy6s8si3I/UqYS+dQxyX7s60xyQaXQH4j// YlALWnf6l08ZQ== 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 v4 15/23] ata: libata-core: Detach a port devices on shutdown Date: Wed, 20 Sep 2023 22:54:31 +0900 Message-ID: <20230920135439.929695-16-dlemoal@kernel.org> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20230920135439.929695-1-dlemoal@kernel.org> References: <20230920135439.929695-1-dlemoal@kernel.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org Modify ata_pci_shutdown_one() to schedule EH to unload a port devices before freezing and thawing the port. This ensures that drives are cleanly disabled and transitioned to standby power mode when a PCI adapter is removed or the system is powered off. Signed-off-by: Damien Le Moal Reviewed-by: Hannes Reinecke Tested-by: Chia-Lin Kao (AceLan) --- drivers/ata/libata-core.c | 16 +++++++++++++++- 1 file changed, 15 insertions(+), 1 deletion(-) diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c index de661780a31e..6b38ebaad019 100644 --- a/drivers/ata/libata-core.c +++ b/drivers/ata/libata-core.c @@ -6164,10 +6164,24 @@ EXPORT_SYMBOL_GPL(ata_pci_remove_one); void ata_pci_shutdown_one(struct pci_dev *pdev) { struct ata_host *host = pci_get_drvdata(pdev); + struct ata_port *ap; + unsigned long flags; int i; + /* Tell EH to disable all devices */ for (i = 0; i < host->n_ports; i++) { - struct ata_port *ap = host->ports[i]; + ap = host->ports[i]; + spin_lock_irqsave(ap->lock, flags); + ap->pflags |= ATA_PFLAG_UNLOADING; + ata_port_schedule_eh(ap); + spin_unlock_irqrestore(ap->lock, flags); + } + + for (i = 0; i < host->n_ports; i++) { + ap = host->ports[i]; + + /* Wait for EH to complete before freezing the port */ + ata_port_wait_eh(ap); ap->pflags |= ATA_PFLAG_FROZEN;