From patchwork Mon Oct 2 15:43:26 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hannes Reinecke X-Patchwork-Id: 729641 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 28E13E748ED for ; Mon, 2 Oct 2023 15:44:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238186AbjJBPoL (ORCPT ); Mon, 2 Oct 2023 11:44:11 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41270 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S238189AbjJBPnw (ORCPT ); Mon, 2 Oct 2023 11:43:52 -0400 Received: from smtp-out2.suse.de (smtp-out2.suse.de [IPv6:2001:67c:2178:6::1d]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 48E3DC6 for ; Mon, 2 Oct 2023 08:43:49 -0700 (PDT) Received: from relay2.suse.de (relay2.suse.de [149.44.160.134]) by smtp-out2.suse.de (Postfix) with ESMTP id CE2321F86B; Mon, 2 Oct 2023 15:43:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1696261423; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=A/TDhizFlEl7tYMAYxsc1tBELdRyeYcc8GM4wTm1sSg=; b=oUjgFRCKjGICOlgZq5M9dlThipW1JXxswZJEj+BPFVjoaZJ9wxSDV/cQjhOt2z5nGpSdZn 5IS/P3UKY18mRsGyeDg/eEL+nEsK/aNsfok0a7bCHaQcAJT9OdQXtN+YFs7659VCLUJrWx nvf3HqPOCggsDVvzCctf8q7JWIOTiDo= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1696261423; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=A/TDhizFlEl7tYMAYxsc1tBELdRyeYcc8GM4wTm1sSg=; b=+Fufbobdgnn/2aLECPWnADA/ziiRxlATsVDY917YgbQO92g5BVK6r9Q5hIAjZ94mCOpdIr omLWZRYcrFxsQnDQ== Received: from adalid.arch.suse.de (adalid.arch.suse.de [10.161.8.13]) by relay2.suse.de (Postfix) with ESMTP id ADBDF2C162; Mon, 2 Oct 2023 15:43:43 +0000 (UTC) Received: by adalid.arch.suse.de (Postfix, from userid 16045) id C56ED51E7557; Mon, 2 Oct 2023 17:43:43 +0200 (CEST) From: Hannes Reinecke To: "Martin K. Petersen" Cc: James Bottomley , linux-scsi@vger.kernel.org, Christoph Hellwig , Hannes Reinecke Subject: [PATCH 16/18] pmcraid: Select device in pmcraid_eh_bus_reset_handler() Date: Mon, 2 Oct 2023 17:43:26 +0200 Message-Id: <20231002154328.43718-17-hare@suse.de> X-Mailer: git-send-email 2.35.3 In-Reply-To: <20231002154328.43718-1-hare@suse.de> References: <20231002154328.43718-1-hare@suse.de> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org The reset code requires a device to be selected, but we shouldn't rely on the command to provide a device for us. So select the first device on the bus when sending down a bus reset. Signed-off-by: Hannes Reinecke Reviewed-by: Christoph Hellwig --- drivers/scsi/pmcraid.c | 46 ++++++++++++++++++++++++++++++++++-------- 1 file changed, 38 insertions(+), 8 deletions(-) diff --git a/drivers/scsi/pmcraid.c b/drivers/scsi/pmcraid.c index 50dc30051f22..d7a331255e71 100644 --- a/drivers/scsi/pmcraid.c +++ b/drivers/scsi/pmcraid.c @@ -2691,7 +2691,7 @@ static int pmcraid_error_handler(struct pmcraid_cmd *cmd) * SUCCESS / FAILED */ static int pmcraid_reset_device( - struct scsi_cmnd *scsi_cmd, + struct scsi_device *scsi_dev, unsigned long timeout, u8 modifier) { @@ -2703,11 +2703,11 @@ static int pmcraid_reset_device( u32 ioasc; pinstance = - (struct pmcraid_instance *)scsi_cmd->device->host->hostdata; - res = scsi_cmd->device->hostdata; + (struct pmcraid_instance *)scsi_dev->host->hostdata; + res = scsi_dev->hostdata; if (!res) { - sdev_printk(KERN_ERR, scsi_cmd->device, + sdev_printk(KERN_ERR, scsi_dev, "reset_device: NULL resource pointer\n"); return FAILED; } @@ -3018,16 +3018,46 @@ static int pmcraid_eh_device_reset_handler(struct scsi_cmnd *scmd) { scmd_printk(KERN_INFO, scmd, "resetting device due to an I/O command timeout.\n"); - return pmcraid_reset_device(scmd, + return pmcraid_reset_device(scmd->device, PMCRAID_INTERNAL_TIMEOUT, RESET_DEVICE_LUN); } static int pmcraid_eh_bus_reset_handler(struct scsi_cmnd *scmd) { - scmd_printk(KERN_INFO, scmd, + struct Scsi_Host *host = scmd->device->host; + struct pmcraid_instance *pinstance = + (struct pmcraid_instance *)host->hostdata; + struct pmcraid_resource_entry *res = NULL; + struct pmcraid_resource_entry *temp; + struct scsi_device *sdev = NULL; + unsigned long lock_flags; + + /* + * The reset device code insists on us passing down + * a device, so grab the first device on the bus. + */ + spin_lock_irqsave(&pinstance->resource_lock, lock_flags); + list_for_each_entry(temp, &pinstance->used_res_q, queue) { + if (scmd->device->channel == PMCRAID_VSET_BUS_ID && + RES_IS_VSET(temp->cfg_entry)) { + res = temp; + break; + } else if (scmd->device->channel == PMCRAID_PHYS_BUS_ID && + RES_IS_GSCSI(temp->cfg_entry)) { + res = temp; + break; + } + } + if (res) + sdev = res->scsi_dev; + spin_unlock_irqrestore(&pinstance->resource_lock, lock_flags); + if (!sdev) + return FAILED; + + sdev_printk(KERN_INFO, sdev, "Doing bus reset due to an I/O command timeout.\n"); - return pmcraid_reset_device(scmd, + return pmcraid_reset_device(sdev, PMCRAID_RESET_BUS_TIMEOUT, RESET_DEVICE_BUS); } @@ -3036,7 +3066,7 @@ static int pmcraid_eh_target_reset_handler(struct scsi_cmnd *scmd) { scmd_printk(KERN_INFO, scmd, "Doing target reset due to an I/O command timeout.\n"); - return pmcraid_reset_device(scmd, + return pmcraid_reset_device(scmd->device, PMCRAID_INTERNAL_TIMEOUT, RESET_DEVICE_TARGET); }