[PATCH v2 3/6] mpi3mr: Prevent PCI writes from driver during PCI error recovery

[Ranjan Kumar <ranjan.kumar@broadcom.com>]

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Prevent interacting with the hardware while
the error recovery in progress.

Signed-off-by: Sathya Prakash <sathya.prakash@broadcom.com>
Signed-off-by: Ranjan Kumar <ranjan.kumar@broadcom.com>
---
 drivers/scsi/mpi3mr/mpi3mr.h           | 26 ++++++++++
 drivers/scsi/mpi3mr/mpi3mr_app.c       | 64 +++++++++++++----------
 drivers/scsi/mpi3mr/mpi3mr_fw.c        | 28 +++++++---
 drivers/scsi/mpi3mr/mpi3mr_os.c        | 71 +++++++++++++++-----------
 drivers/scsi/mpi3mr/mpi3mr_transport.c | 39 ++++++++++++--
 5 files changed, 158 insertions(+), 70 deletions(-)

diff --git a/drivers/scsi/mpi3mr/mpi3mr.h b/drivers/scsi/mpi3mr/mpi3mr.h
index 25e6e3a09468..1ac7f88dc1cd 100644
--- a/drivers/scsi/mpi3mr/mpi3mr.h
+++ b/drivers/scsi/mpi3mr/mpi3mr.h
@@ -481,6 +481,7 @@ struct mpi3mr_throttle_group_info {
 
 /* HBA port flags */
 #define MPI3MR_HBA_PORT_FLAG_DIRTY	0x01
+#define MPI3MR_HBA_PORT_FLAG_NEW       0x02
 
 /* IOCTL data transfer sge*/
 #define MPI3MR_NUM_IOCTL_SGE		256
@@ -900,6 +901,29 @@ struct scmd_priv {
 	u8 mpi3mr_scsiio_req[MPI3MR_ADMIN_REQ_FRAME_SZ];
 };
 
+/**
+ * struct mpi3mr_pdevinfo - PCI device information
+ *
+ * @dev_id: PCI device ID of the adapter
+ * @dev_hw_rev: PCI revision of the adapter
+ * @subsys_dev_id: PCI subsystem device ID of the adapter
+ * @subsys_ven_id: PCI subsystem vendor ID of the adapter
+ * @dev: PCI device
+ * @func: PCI function
+ * @bus: PCI bus
+ * @seg_id: PCI segment ID
+ */
+struct mpi3mr_pdevinfo {
+	u16 id;
+	u16 ssid;
+	u16 ssvid;
+	u16 segment;
+	u8 dev:5;
+	u8 func:3;
+	u8 bus;
+	u8 revision;
+};
+
 /**
  * struct mpi3mr_ioc - Adapter anchor structure stored in shost
  * private data
@@ -1058,6 +1082,7 @@ struct scmd_priv {
  * @ioctl_sges_allocated: Flag for IOCTL SGEs allocated or not
  * @pcie_err_recovery: PCIe error recovery in progress
  * @block_on_pcie_err: Block IO during PCI error recovery
+ * @pdevinfo: PCI device information
  */
 struct mpi3mr_ioc {
 	struct list_head list;
@@ -1251,6 +1276,7 @@ struct mpi3mr_ioc {
 	bool ioctl_sges_allocated;
 	bool pcie_err_recovery;
 	bool block_on_pcie_err;
+	struct mpi3mr_pdevinfo pdevinfo;
 };
 
 /**
diff --git a/drivers/scsi/mpi3mr/mpi3mr_app.c b/drivers/scsi/mpi3mr/mpi3mr_app.c
index 4b93b7440da6..a11d6f026f0e 100644
--- a/drivers/scsi/mpi3mr/mpi3mr_app.c
+++ b/drivers/scsi/mpi3mr/mpi3mr_app.c
@@ -31,7 +31,7 @@ static int mpi3mr_bsg_pel_abort(struct mpi3mr_ioc *mrioc)
 		dprint_bsg_err(mrioc, "%s: reset in progress\n", __func__);
 		return -1;
 	}
-	if (mrioc->stop_bsgs) {
+	if (mrioc->stop_bsgs || mrioc->block_on_pcie_err) {
 		dprint_bsg_err(mrioc, "%s: bsgs are blocked\n", __func__);
 		return -1;
 	}
@@ -424,6 +424,9 @@ static long mpi3mr_bsg_adp_reset(struct mpi3mr_ioc *mrioc,
 		goto out;
 	}
 
+	if (mrioc->unrecoverable || mrioc->block_on_pcie_err)
+		return -EINVAL;
+
 	sg_copy_to_buffer(job->request_payload.sg_list,
 			  job->request_payload.sg_cnt,
 			  &adpreset, sizeof(adpreset));
@@ -470,25 +473,29 @@ static long mpi3mr_bsg_populate_adpinfo(struct mpi3mr_ioc *mrioc,
 
 	memset(&adpinfo, 0, sizeof(adpinfo));
 	adpinfo.adp_type = MPI3MR_BSG_ADPTYPE_AVGFAMILY;
-	adpinfo.pci_dev_id = mrioc->pdev->device;
-	adpinfo.pci_dev_hw_rev = mrioc->pdev->revision;
-	adpinfo.pci_subsys_dev_id = mrioc->pdev->subsystem_device;
-	adpinfo.pci_subsys_ven_id = mrioc->pdev->subsystem_vendor;
-	adpinfo.pci_bus = mrioc->pdev->bus->number;
-	adpinfo.pci_dev = PCI_SLOT(mrioc->pdev->devfn);
-	adpinfo.pci_func = PCI_FUNC(mrioc->pdev->devfn);
-	adpinfo.pci_seg_id = pci_domain_nr(mrioc->pdev->bus);
 	adpinfo.app_intfc_ver = MPI3MR_IOCTL_VERSION;
 
-	ioc_state = mpi3mr_get_iocstate(mrioc);
-	if (ioc_state == MRIOC_STATE_UNRECOVERABLE)
-		adpinfo.adp_state = MPI3MR_BSG_ADPSTATE_UNRECOVERABLE;
-	else if ((mrioc->reset_in_progress) || (mrioc->stop_bsgs))
+	if (mrioc->reset_in_progress || mrioc->stop_bsgs ||
+	    mrioc->block_on_pcie_err)
 		adpinfo.adp_state = MPI3MR_BSG_ADPSTATE_IN_RESET;
-	else if (ioc_state == MRIOC_STATE_FAULT)
-		adpinfo.adp_state = MPI3MR_BSG_ADPSTATE_FAULT;
-	else
-		adpinfo.adp_state = MPI3MR_BSG_ADPSTATE_OPERATIONAL;
+	else {
+		ioc_state = mpi3mr_get_iocstate(mrioc);
+		if (ioc_state == MRIOC_STATE_UNRECOVERABLE)
+			adpinfo.adp_state = MPI3MR_BSG_ADPSTATE_UNRECOVERABLE;
+		else if (ioc_state == MRIOC_STATE_FAULT)
+			adpinfo.adp_state = MPI3MR_BSG_ADPSTATE_FAULT;
+		else
+			adpinfo.adp_state = MPI3MR_BSG_ADPSTATE_OPERATIONAL;
+	}
+
+	adpinfo.pci_dev_id = mrioc->pdevinfo.id;
+	adpinfo.pci_dev_hw_rev = mrioc->pdevinfo.revision;
+	adpinfo.pci_subsys_dev_id = mrioc->pdevinfo.ssid;
+	adpinfo.pci_subsys_ven_id = mrioc->pdevinfo.ssvid;
+	adpinfo.pci_bus = mrioc->pdevinfo.bus;
+	adpinfo.pci_dev = mrioc->pdevinfo.dev;
+	adpinfo.pci_func = mrioc->pdevinfo.func;
+	adpinfo.pci_seg_id = mrioc->pdevinfo.segment;
 
 	memcpy((u8 *)&adpinfo.driver_info, (u8 *)&mrioc->driver_info,
 	    sizeof(adpinfo.driver_info));
@@ -1495,7 +1502,7 @@ static long mpi3mr_bsg_process_mpt_cmds(struct bsg_job *job)
 		mutex_unlock(&mrioc->bsg_cmds.mutex);
 		goto out;
 	}
-	if (mrioc->stop_bsgs) {
+	if (mrioc->stop_bsgs || mrioc->block_on_pcie_err) {
 		dprint_bsg_err(mrioc, "%s: bsgs are blocked\n", __func__);
 		rval = -EAGAIN;
 		mutex_unlock(&mrioc->bsg_cmds.mutex);
@@ -2020,17 +2027,20 @@ adp_state_show(struct device *dev, struct device_attribute *attr,
 	enum mpi3mr_iocstate ioc_state;
 	uint8_t adp_state;
 
-	ioc_state = mpi3mr_get_iocstate(mrioc);
-	if (ioc_state == MRIOC_STATE_UNRECOVERABLE)
-		adp_state = MPI3MR_BSG_ADPSTATE_UNRECOVERABLE;
-	else if ((mrioc->reset_in_progress) || (mrioc->stop_bsgs))
+	if (mrioc->reset_in_progress || mrioc->stop_bsgs ||
+		 mrioc->block_on_pcie_err)
 		adp_state = MPI3MR_BSG_ADPSTATE_IN_RESET;
-	else if (ioc_state == MRIOC_STATE_FAULT)
-		adp_state = MPI3MR_BSG_ADPSTATE_FAULT;
-	else
-		adp_state = MPI3MR_BSG_ADPSTATE_OPERATIONAL;
+	else {
+		ioc_state = mpi3mr_get_iocstate(mrioc);
+		if (ioc_state == MRIOC_STATE_UNRECOVERABLE)
+			adp_state = MPI3MR_BSG_ADPSTATE_UNRECOVERABLE;
+		else if (ioc_state == MRIOC_STATE_FAULT)
+			adp_state = MPI3MR_BSG_ADPSTATE_FAULT;
+		else
+			adp_state = MPI3MR_BSG_ADPSTATE_OPERATIONAL;
+	}
 
-	return sysfs_emit(buf, "%u\n", adp_state);
+	return snprintf(buf, PAGE_SIZE, "%u\n", adp_state);
 }
 
 static DEVICE_ATTR_RO(adp_state);
diff --git a/drivers/scsi/mpi3mr/mpi3mr_fw.c b/drivers/scsi/mpi3mr/mpi3mr_fw.c
index d8c57a0a518f..c50fc27231cd 100644
--- a/drivers/scsi/mpi3mr/mpi3mr_fw.c
+++ b/drivers/scsi/mpi3mr/mpi3mr_fw.c
@@ -595,7 +595,7 @@ int mpi3mr_blk_mq_poll(struct Scsi_Host *shost, unsigned int queue_num)
 	mrioc = (struct mpi3mr_ioc *)shost->hostdata;
 
 	if ((mrioc->reset_in_progress || mrioc->prepare_for_reset ||
-	    mrioc->unrecoverable))
+	    mrioc->unrecoverable || mrioc->pcie_err_recovery))
 		return 0;
 
 	num_entries = mpi3mr_process_op_reply_q(mrioc,
@@ -1037,13 +1037,13 @@ enum mpi3mr_iocstate mpi3mr_get_iocstate(struct mpi3mr_ioc *mrioc)
 	u32 ioc_status, ioc_config;
 	u8 ready, enabled;
 
-	ioc_status = readl(&mrioc->sysif_regs->ioc_status);
-	ioc_config = readl(&mrioc->sysif_regs->ioc_configuration);
-
 	if (mrioc->unrecoverable)
 		return MRIOC_STATE_UNRECOVERABLE;
+	ioc_status = readl(&mrioc->sysif_regs->ioc_status);
+
 	if (ioc_status & MPI3_SYSIF_IOC_STATUS_FAULT)
 		return MRIOC_STATE_FAULT;
+	ioc_config = readl(&mrioc->sysif_regs->ioc_configuration);
 
 	ready = (ioc_status & MPI3_SYSIF_IOC_STATUS_READY);
 	enabled = (ioc_config & MPI3_SYSIF_IOC_CONFIG_ENABLE_IOC);
@@ -1667,6 +1667,12 @@ int mpi3mr_admin_request_post(struct mpi3mr_ioc *mrioc, void *admin_req,
 		retval = -EAGAIN;
 		goto out;
 	}
+	if (mrioc->pcie_err_recovery) {
+		ioc_err(mrioc, "admin request queue submission failed due to pcie error recovery in progress\n");
+		retval = -EAGAIN;
+		goto out;
+	}
+
 	areq_entry = (u8 *)mrioc->admin_req_base +
 	    (areq_pi * MPI3MR_ADMIN_REQ_FRAME_SZ);
 	memset(areq_entry, 0, MPI3MR_ADMIN_REQ_FRAME_SZ);
@@ -2337,6 +2343,11 @@ int mpi3mr_op_request_post(struct mpi3mr_ioc *mrioc,
 		retval = -EAGAIN;
 		goto out;
 	}
+	if (mrioc->pcie_err_recovery) {
+		ioc_err(mrioc, "operational request queue submission failed due to pcie error recovery in progress\n");
+		retval = -EAGAIN;
+		goto out;
+	}
 
 	segment_base_addr = segments[pi / op_req_q->segment_qd].segment;
 	req_entry = (u8 *)segment_base_addr +
@@ -2585,7 +2596,7 @@ static void mpi3mr_watchdog_work(struct work_struct *work)
 	u32 fault, host_diagnostic, ioc_status;
 	u32 reset_reason = MPI3MR_RESET_FROM_FAULT_WATCH;
 
-	if (mrioc->reset_in_progress)
+	if (mrioc->reset_in_progress || mrioc->pcie_err_recovery)
 		return;
 
 	if (!mrioc->unrecoverable && !pci_device_is_present(mrioc->pdev)) {
@@ -4111,7 +4122,7 @@ int mpi3mr_reinit_ioc(struct mpi3mr_ioc *mrioc, u8 is_resume)
 		goto out_failed_noretry;
 	}
 
-	if (is_resume) {
+	if (is_resume || mrioc->block_on_pcie_err) {
 		dprint_reset(mrioc, "setting up single ISR\n");
 		retval = mpi3mr_setup_isr(mrioc, 1);
 		if (retval) {
@@ -4151,7 +4162,7 @@ int mpi3mr_reinit_ioc(struct mpi3mr_ioc *mrioc, u8 is_resume)
 		goto out_failed;
 	}
 
-	if (is_resume) {
+	if (is_resume || mrioc->block_on_pcie_err) {
 		dprint_reset(mrioc, "setting up multiple ISR\n");
 		retval = mpi3mr_setup_isr(mrioc, 0);
 		if (retval) {
@@ -4625,7 +4636,8 @@ void mpi3mr_cleanup_ioc(struct mpi3mr_ioc *mrioc)
 
 	ioc_state = mpi3mr_get_iocstate(mrioc);
 
-	if ((!mrioc->unrecoverable) && (!mrioc->reset_in_progress) &&
+	if (!mrioc->unrecoverable && !mrioc->reset_in_progress &&
+	    !mrioc->pcie_err_recovery &&
 	    (ioc_state == MRIOC_STATE_READY)) {
 		if (mpi3mr_issue_and_process_mur(mrioc,
 		    MPI3MR_RESET_FROM_CTLR_CLEANUP))
diff --git a/drivers/scsi/mpi3mr/mpi3mr_os.c b/drivers/scsi/mpi3mr/mpi3mr_os.c
index dea47ef53abb..d61fd105dfad 100644
--- a/drivers/scsi/mpi3mr/mpi3mr_os.c
+++ b/drivers/scsi/mpi3mr/mpi3mr_os.c
@@ -919,7 +919,7 @@ static int mpi3mr_report_tgtdev_to_host(struct mpi3mr_ioc *mrioc,
 	int retval = 0;
 	struct mpi3mr_tgt_dev *tgtdev;
 
-	if (mrioc->reset_in_progress)
+	if (mrioc->reset_in_progress || mrioc->pcie_err_recovery)
 		return -1;
 
 	tgtdev = mpi3mr_get_tgtdev_by_perst_id(mrioc, perst_id);
@@ -2000,8 +2000,13 @@ static void mpi3mr_fwevt_bh(struct mpi3mr_ioc *mrioc,
 	}
 	case MPI3_EVENT_WAIT_FOR_DEVICES_TO_REFRESH:
 	{
-		while (mrioc->device_refresh_on)
+		while ((mrioc->device_refresh_on || mrioc->block_on_pcie_err) &&
+		    !mrioc->unrecoverable && !mrioc->pcie_err_recovery) {
 			msleep(500);
+		}
+
+		if (mrioc->unrecoverable || mrioc->pcie_err_recovery)
+			break;
 
 		dprint_event_bh(mrioc,
 		    "scan for non responding and newly added devices after soft reset started\n");
@@ -3680,6 +3685,13 @@ int mpi3mr_issue_tm(struct mpi3mr_ioc *mrioc, u8 tm_type,
 		mutex_unlock(&drv_cmd->mutex);
 		goto out;
 	}
+	if (mrioc->block_on_pcie_err) {
+		retval = -1;
+		dprint_tm(mrioc, "sending task management failed due to\n"
+				"pcie error recovery in progress\n");
+		mutex_unlock(&drv_cmd->mutex);
+		goto out;
+	}
 
 	drv_cmd->state = MPI3MR_CMD_PENDING;
 	drv_cmd->is_waiting = 1;
@@ -4073,12 +4085,19 @@ static int mpi3mr_eh_bus_reset(struct scsi_cmnd *scmd)
 	if (dev_type == MPI3_DEVICE_DEVFORM_VD) {
 		mpi3mr_wait_for_host_io(mrioc,
 			MPI3MR_RAID_ERRREC_RESET_TIMEOUT);
-		if (!mpi3mr_get_fw_pending_ios(mrioc))
+		if (!mpi3mr_get_fw_pending_ios(mrioc)) {
+			while (mrioc->reset_in_progress ||
+			       mrioc->prepare_for_reset ||
+			       mrioc->block_on_pcie_err)
+				ssleep(1);
 			retval = SUCCESS;
+			goto out;
+		}
 	}
 	if (retval == FAILED)
 		mpi3mr_print_pending_host_io(mrioc);
 
+out:
 	sdev_printk(KERN_INFO, scmd->device,
 		"Bus reset is %s for scmd(%p)\n",
 		((retval == SUCCESS) ? "SUCCESS" : "FAILED"), scmd);
@@ -4779,7 +4798,8 @@ static int mpi3mr_qcmd(struct Scsi_Host *shost,
 		goto out;
 	}
 
-	if (mrioc->reset_in_progress) {
+	if (mrioc->reset_in_progress || mrioc->prepare_for_reset
+	    || mrioc->block_on_pcie_err) {
 		retval = SCSI_MLQUEUE_HOST_BUSY;
 		goto out;
 	}
@@ -5123,6 +5143,14 @@ mpi3mr_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 	mrioc->logging_level = logging_level;
 	mrioc->shost = shost;
 	mrioc->pdev = pdev;
+	mrioc->pdevinfo.id = pdev->device;
+	mrioc->pdevinfo.revision = pdev->revision;
+	mrioc->pdevinfo.ssid = pdev->subsystem_device;
+	mrioc->pdevinfo.ssvid = pdev->subsystem_vendor;
+	mrioc->pdevinfo.bus = pdev->bus->number;
+	mrioc->pdevinfo.dev = PCI_SLOT(pdev->devfn);
+	mrioc->pdevinfo.func = PCI_FUNC(pdev->devfn);
+	mrioc->pdevinfo.segment = pci_domain_nr(pdev->bus);
 	mrioc->stop_bsgs = 1;
 
 	mrioc->max_sgl_entries = max_sgl_entries;
@@ -5276,17 +5304,21 @@ static void mpi3mr_remove(struct pci_dev *pdev)
 	struct workqueue_struct	*wq;
 	unsigned long flags;
 	struct mpi3mr_tgt_dev *tgtdev, *tgtdev_next;
-	struct mpi3mr_hba_port *port, *hba_port_next;
-	struct mpi3mr_sas_node *sas_expander, *sas_expander_next;
 
 	if (mpi3mr_get_shost_and_mrioc(pdev, &shost, &mrioc))
 		return;
 
-	mrioc = shost_priv(shost);
 	while (mrioc->reset_in_progress || mrioc->is_driver_loading)
 		ssleep(1);
 
-	if (!pci_device_is_present(mrioc->pdev)) {
+	if (mrioc->block_on_pcie_err) {
+		mrioc->block_on_pcie_err = false;
+		scsi_unblock_requests(shost);
+		mrioc->unrecoverable = 1;
+	}
+
+	if (!pci_device_is_present(mrioc->pdev) ||
+	    mrioc->pcie_err_recovery) {
 		mrioc->unrecoverable = 1;
 		mpi3mr_flush_cmds_for_unrecovered_controller(mrioc);
 	}
@@ -5316,29 +5348,6 @@ static void mpi3mr_remove(struct pci_dev *pdev)
 	mpi3mr_cleanup_ioc(mrioc);
 	mpi3mr_free_mem(mrioc);
 	mpi3mr_cleanup_resources(mrioc);
-
-	spin_lock_irqsave(&mrioc->sas_node_lock, flags);
-	list_for_each_entry_safe_reverse(sas_expander, sas_expander_next,
-	    &mrioc->sas_expander_list, list) {
-		spin_unlock_irqrestore(&mrioc->sas_node_lock, flags);
-		mpi3mr_expander_node_remove(mrioc, sas_expander);
-		spin_lock_irqsave(&mrioc->sas_node_lock, flags);
-	}
-	list_for_each_entry_safe(port, hba_port_next, &mrioc->hba_port_table_list, list) {
-		ioc_info(mrioc,
-		    "removing hba_port entry: %p port: %d from hba_port list\n",
-		    port, port->port_id);
-		list_del(&port->list);
-		kfree(port);
-	}
-	spin_unlock_irqrestore(&mrioc->sas_node_lock, flags);
-
-	if (mrioc->sas_hba.num_phys) {
-		kfree(mrioc->sas_hba.phy);
-		mrioc->sas_hba.phy = NULL;
-		mrioc->sas_hba.num_phys = 0;
-	}
-
 	spin_lock(&mrioc_list_lock);
 	list_del(&mrioc->list);
 	spin_unlock(&mrioc_list_lock);
diff --git a/drivers/scsi/mpi3mr/mpi3mr_transport.c b/drivers/scsi/mpi3mr/mpi3mr_transport.c
index c0c8ab586957..8c8368104a27 100644
--- a/drivers/scsi/mpi3mr/mpi3mr_transport.c
+++ b/drivers/scsi/mpi3mr/mpi3mr_transport.c
@@ -149,6 +149,11 @@ static int mpi3mr_report_manufacture(struct mpi3mr_ioc *mrioc,
 		return -EFAULT;
 	}
 
+	if (mrioc->pcie_err_recovery) {
+		ioc_err(mrioc, "%s: pcie error recovery in progress!\n", __func__);
+		return -EFAULT;
+	}
+
 	data_out_sz = sizeof(struct rep_manu_request);
 	data_in_sz = sizeof(struct rep_manu_reply);
 	data_out = dma_alloc_coherent(&mrioc->pdev->dev,
@@ -792,6 +797,12 @@ static int mpi3mr_set_identify(struct mpi3mr_ioc *mrioc, u16 handle,
 		return -EFAULT;
 	}
 
+	if (mrioc->pcie_err_recovery) {
+		ioc_err(mrioc, "%s: pcie error recovery in progress!\n",
+		    __func__);
+		return -EFAULT;
+	}
+
 	if ((mpi3mr_cfg_get_dev_pg0(mrioc, &ioc_status, &device_pg0,
 	    sizeof(device_pg0), MPI3_DEVICE_PGAD_FORM_HANDLE, handle))) {
 		ioc_err(mrioc, "%s: device page0 read failed\n", __func__);
@@ -1009,6 +1020,9 @@ mpi3mr_alloc_hba_port(struct mpi3mr_ioc *mrioc, u16 port_id)
 	hba_port->port_id = port_id;
 	ioc_info(mrioc, "hba_port entry: %p, port: %d is added to hba_port list\n",
 	    hba_port, hba_port->port_id);
+	if (mrioc->reset_in_progress ||
+		mrioc->pcie_err_recovery)
+		hba_port->flags = MPI3MR_HBA_PORT_FLAG_NEW;
 	list_add_tail(&hba_port->list, &mrioc->hba_port_table_list);
 	return hba_port;
 }
@@ -1057,7 +1071,7 @@ void mpi3mr_update_links(struct mpi3mr_ioc *mrioc,
 	struct mpi3mr_sas_node *mr_sas_node;
 	struct mpi3mr_sas_phy *mr_sas_phy;
 
-	if (mrioc->reset_in_progress)
+	if (mrioc->reset_in_progress || mrioc->pcie_err_recovery)
 		return;
 
 	spin_lock_irqsave(&mrioc->sas_node_lock, flags);
@@ -1965,7 +1979,7 @@ int mpi3mr_expander_add(struct mpi3mr_ioc *mrioc, u16 handle)
 	if (!handle)
 		return -1;
 
-	if (mrioc->reset_in_progress)
+	if (mrioc->reset_in_progress || mrioc->pcie_err_recovery)
 		return -1;
 
 	if ((mpi3mr_cfg_get_sas_exp_pg0(mrioc, &ioc_status, &expander_pg0,
@@ -2171,7 +2185,7 @@ void mpi3mr_expander_node_remove(struct mpi3mr_ioc *mrioc,
 	/* remove sibling ports attached to this expander */
 	list_for_each_entry_safe(mr_sas_port, next,
 	   &sas_expander->sas_port_list, port_list) {
-		if (mrioc->reset_in_progress)
+		if (mrioc->reset_in_progress || mrioc->pcie_err_recovery)
 			return;
 		if (mr_sas_port->remote_identify.device_type ==
 		    SAS_END_DEVICE)
@@ -2221,7 +2235,7 @@ void mpi3mr_expander_remove(struct mpi3mr_ioc *mrioc, u64 sas_address,
 	struct mpi3mr_sas_node *sas_expander;
 	unsigned long flags;
 
-	if (mrioc->reset_in_progress)
+	if (mrioc->reset_in_progress || mrioc->pcie_err_recovery)
 		return;
 
 	if (!hba_port)
@@ -2532,6 +2546,11 @@ static int mpi3mr_get_expander_phy_error_log(struct mpi3mr_ioc *mrioc,
 		return -EFAULT;
 	}
 
+	if (mrioc->pcie_err_recovery) {
+		ioc_err(mrioc, "%s: pcie error recovery in progress!\n", __func__);
+		return -EFAULT;
+	}
+
 	data_out_sz = sizeof(struct phy_error_log_request);
 	data_in_sz = sizeof(struct phy_error_log_reply);
 	sz = data_out_sz + data_in_sz;
@@ -2791,6 +2810,12 @@ mpi3mr_expander_phy_control(struct mpi3mr_ioc *mrioc,
 		return -EFAULT;
 	}
 
+	if (mrioc->pcie_err_recovery) {
+		ioc_err(mrioc, "%s: pcie error recovery in progress!\n",
+		    __func__);
+		return -EFAULT;
+	}
+
 	data_out_sz = sizeof(struct phy_control_request);
 	data_in_sz = sizeof(struct phy_control_reply);
 	sz = data_out_sz + data_in_sz;
@@ -3214,6 +3239,12 @@ mpi3mr_transport_smp_handler(struct bsg_job *job, struct Scsi_Host *shost,
 		goto out;
 	}
 
+	if (mrioc->pcie_err_recovery) {
+		ioc_err(mrioc, "%s: pcie error recovery in progress!\n", __func__);
+		rc = -EFAULT;
+		goto out;
+	}
+
 	rc = mpi3mr_map_smp_buffer(&mrioc->pdev->dev, &job->request_payload,
 	    &dma_addr_out, &dma_len_out, &addr_out);
 	if (rc)
-- 
2.31.1


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