From mboxrd@z Thu Jan 1 00:00:00 1970 From: Dan Williams Subject: [isci-rnc PATCH v1 19/37] isci: Make sure all TCs are terminated and cleaned in LUN reset. Date: Thu, 22 Mar 2012 17:29:31 -0700 Message-ID: <20120323002931.18065.66771.stgit@dwillia2-linux.jf.intel.com> References: <20120323002504.18065.45709.stgit@dwillia2-linux.jf.intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Return-path: Received: from mga14.intel.com ([143.182.124.37]:21881 "EHLO mga14.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1031470Ab2CWAOE (ORCPT ); Thu, 22 Mar 2012 20:14:04 -0400 In-Reply-To: <20120323002504.18065.45709.stgit@dwillia2-linux.jf.intel.com> Sender: linux-scsi-owner@vger.kernel.org List-Id: linux-scsi@vger.kernel.org To: linux-scsi@vger.kernel.org Cc: Jeff Skirvin From: Jeff Skirvin In the libsas error path, SATA disks require extra handling in libata to recover operation. However, libsas expects to be able to immediately recover all outstanding I/O once the error handler escalation stops. This patch fixes the condition where the libata error handler is scheduled for operation but libsas has already deleted the outstanding sas_tasks. Signed-off-by: Jeff Skirvin Signed-off-by: Dan Williams --- drivers/scsi/isci/task.c | 14 ++++++++------ 1 files changed, 8 insertions(+), 6 deletions(-) diff --git a/drivers/scsi/isci/task.c b/drivers/scsi/isci/task.c index 222fb0d..5d738fd 100644 --- a/drivers/scsi/isci/task.c +++ b/drivers/scsi/isci/task.c @@ -439,16 +439,18 @@ int isci_task_lu_reset(struct domain_device *dev, u8 *lun) goto out; } + /* Suspend the RNC, kill all TCs */ + if (isci_remote_device_suspend_terminate(ihost, idev, NULL) + != SCI_SUCCESS) { + /* The suspend/terminate only fails if isci_get_device fails */ + ret = TMF_RESP_FUNC_FAILED; + goto out; + } + /* All pending I/Os have been terminated and cleaned up. */ if (dev_is_sata(dev)) { sas_ata_schedule_reset(dev); ret = TMF_RESP_FUNC_COMPLETE; } else { - /* Suspend the RNC, kill all TCs */ - if (isci_remote_device_suspend_terminate(ihost, idev, NULL) - != SCI_SUCCESS) { - ret = TMF_RESP_FUNC_FAILED; - goto out; - } /* Send the task management part of the reset. */ ret = isci_task_send_lu_reset_sas(ihost, idev, lun); }