Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi

Pull SCSI updates from James Bottomley: "Updates to the usual drivers (target, ufs, smartpqi, lpfc). There are some core changes, mostly around reworking some of our user context assumptions in device put and moving some code around. The remaining updates are bug fixes and minor changes" * tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (138 commits) scsi: sg: Fix get_user() in call sg_scsi_ioctl() scsi: megaraid_sas: Fix some spelling mistakes in comment scsi: core: Use SCSI_SCAN_INITIAL in do_scsi_scan_host() scsi: core: Use SCSI_SCAN_RESCAN in __scsi_add_device() scsi: ufs: ufs-mediatek: Remove unnecessary return code scsi: ufs: core: Fix the polling implementation scsi: libsas: Do not export sas_ata_wait_after_reset() scsi: hisi_sas: Fix SATA devices missing issue during I_T nexus reset scsi: libsas: Add smp_ata_check_ready_type() scsi: Revert "scsi: hisi_sas: Don't send bcast events from HW during nexus HA reset" scsi: Revert "scsi: hisi_sas: Drain bcast events in hisi_sas_rescan_topology()" scsi: ufs: ufs-mediatek: Modify the return value scsi: ufs: ufs-mediatek: Remove unneeded code scsi: device_handler: alua: Call scsi_device_put() from non-atomic context scsi: device_handler: alua: Revert "Move a scsi_device_put() call out of alua_check_vpd()" scsi: snic: Fix possible UAF in snic_tgt_create() scsi: qla2xxx: Initialize vha->unknown_atio_[list, work] for NPIV hosts scsi: qla2xxx: Remove duplicate of vha->iocb_work initialization scsi: fcoe: Fix transport not deattached when fcoe_if_init() fails scsi: sd: Use 16-byte SYNCHRONIZE CACHE on ZBC devices ...
author: Linus Torvalds <torvalds@linux-foundation.org> 2022-12-14 19:58:51 +0300
committer: Linus Torvalds <torvalds@linux-foundation.org> 2022-12-14 19:58:51 +0300
commit: aa5ad10f6cca6d42f3fef6cb862e03b220ea19a6 (patch)
tree: 80da5833dccec9d952c8458c98c65864fca1186a /drivers
parent: e2ca6ba6ba0152361aa4fcbf6067db71b2c7a770 (diff)
parent: 4e80eef45ad775a54fb06a66bf8267a154781ce5 (diff)
download: linux-aa5ad10f6cca6d42f3fef6cb862e03b220ea19a6.tar.xz
90 files changed, 2443 insertions, 1154 deletions
diff --git a/drivers/message/fusion/mptctl.c b/drivers/message/fusion/mptctl.c
index 52c7020c9d19..1decd09a08d8 100644
--- a/drivers/message/fusion/mptctl.c
+++ b/drivers/message/fusion/mptctl.c
@@ -2879,7 +2879,6 @@ static struct mpt_pci_driver mptctl_driver = {
 static int __init mptctl_init(void)
 {
 	int err;
-	int where = 1;
 
 	show_mptmod_ver(my_NAME, my_VERSION);
 
@@ -2898,7 +2897,6 @@ static int __init mptctl_init(void)
 	/*
 	 *  Install our handler
 	 */
-	++where;
 	mptctl_id = mpt_register(mptctl_reply, MPTCTL_DRIVER,
 	    "mptctl_reply");
 	if (!mptctl_id || mptctl_id >= MPT_MAX_PROTOCOL_DRIVERS) {
diff --git a/drivers/message/fusion/mptsas.c b/drivers/message/fusion/mptsas.c
index 34901bcd1ce8..88fe4a860ae5 100644
--- a/drivers/message/fusion/mptsas.c
+++ b/drivers/message/fusion/mptsas.c
@@ -1952,12 +1952,12 @@ mptsas_qcmd(struct Scsi_Host *shost, struct scsi_cmnd *SCpnt)
  *	@sc: scsi command that the midlayer is about to time out
  *
  **/
-static enum blk_eh_timer_return mptsas_eh_timed_out(struct scsi_cmnd *sc)
+static enum scsi_timeout_action mptsas_eh_timed_out(struct scsi_cmnd *sc)
 {
 	MPT_SCSI_HOST *hd;
 	MPT_ADAPTER   *ioc;
 	VirtDevice    *vdevice;
-	enum blk_eh_timer_return rc = BLK_EH_DONE;
+	enum scsi_timeout_action rc = SCSI_EH_NOT_HANDLED;
 
 	hd = shost_priv(sc->device->host);
 	if (hd == NULL) {
@@ -1980,7 +1980,7 @@ static enum blk_eh_timer_return mptsas_eh_timed_out(struct scsi_cmnd *sc)
 		dtmprintk(ioc, printk(MYIOC_s_WARN_FMT ": %s: ioc is in reset,"
 		    "SML need to reset the timer (sc=%p)\n",
 		    ioc->name, __func__, sc));
-		rc = BLK_EH_RESET_TIMER;
+		rc = SCSI_EH_RESET_TIMER;
 	}
 	vdevice = sc->device->hostdata;
 	if (vdevice && vdevice->vtarget && (vdevice->vtarget->inDMD
@@ -1988,7 +1988,7 @@ static enum blk_eh_timer_return mptsas_eh_timed_out(struct scsi_cmnd *sc)
 		dtmprintk(ioc, printk(MYIOC_s_WARN_FMT ": %s: target removed "
 		    "or in device removal delay (sc=%p)\n",
 		    ioc->name, __func__, sc));
-		rc = BLK_EH_RESET_TIMER;
+		rc = SCSI_EH_RESET_TIMER;
 		goto done;
 	}
 
diff --git a/drivers/scsi/BusLogic.c b/drivers/scsi/BusLogic.c
index f2abffce2659..f7b7ffda1161 100644
--- a/drivers/scsi/BusLogic.c
+++ b/drivers/scsi/BusLogic.c
@@ -2198,7 +2198,7 @@ static int blogic_slaveconfig(struct scsi_device *dev)
 
 static int __init blogic_init(void)
 {
-	int adapter_count = 0, drvr_optindex = 0, probeindex;
+	int drvr_optindex = 0, probeindex;
 	struct blogic_adapter *adapter;
 	int ret = 0;
 
@@ -2368,10 +2368,8 @@ static int __init blogic_init(void)
 					list_del(&myadapter->host_list);
 					scsi_host_put(host);
 					ret = -ENODEV;
-				} else {
+				} else
 					scsi_scan_host(host);
-					adapter_count++;
-				}
 			}
 		} else {
 			/*
diff --git a/drivers/scsi/NCR5380.c b/drivers/scsi/NCR5380.c
index dece7d9eb4d3..ca85bddb582b 100644
--- a/drivers/scsi/NCR5380.c
+++ b/drivers/scsi/NCR5380.c
@@ -858,7 +858,7 @@ static void NCR5380_dma_complete(struct Scsi_Host *instance)
  * latency, but a bus reset will reset chip logic. Checking for parity error
  * is unnecessary because that interrupt is never enabled. A Loss of BSY
  * condition will clear DMA Mode. We can tell when this occurs because the
- * the Busy Monitor interrupt is enabled together with DMA Mode.
+ * Busy Monitor interrupt is enabled together with DMA Mode.
  */
 
 static irqreturn_t __maybe_unused NCR5380_intr(int irq, void *dev_id)
diff --git a/drivers/scsi/bfa/bfa_fc.h b/drivers/scsi/bfa/bfa_fc.h
index 0314e4b9e1fb..a12d693065ce 100644
--- a/drivers/scsi/bfa/bfa_fc.h
+++ b/drivers/scsi/bfa/bfa_fc.h
@@ -1548,7 +1548,7 @@ enum fdmi_port_attribute_type {
 struct fdmi_attr_s {
 	__be16        type;
 	__be16        len;
-	u8         value[1];
+	u8         value[];
 };
 
 /*
diff --git a/drivers/scsi/bfa/bfad_bsg.c b/drivers/scsi/bfa/bfad_bsg.c
index be8dfbe13e90..79d4f7ee5bcb 100644
--- a/drivers/scsi/bfa/bfad_bsg.c
+++ b/drivers/scsi/bfa/bfad_bsg.c
@@ -2540,6 +2540,35 @@ out:
 	return 0;
 }
 
+/*
+ * Set the SCSI device sdev_bflags - sdev_bflags are used by the
+ * SCSI mid-layer to choose LUN Scanning mode REPORT_LUNS vs. Sequential Scan
+ *
+ * Internally iterates over all the ITNIM's part of the im_port & sets the
+ * sdev_bflags for the scsi_device associated with LUN #0.
+ */
+static void bfad_reset_sdev_bflags(struct bfad_im_port_s *im_port,
+				   int lunmask_cfg)
+{
+	const u32 scan_flags = BLIST_NOREPORTLUN | BLIST_SPARSELUN;
+	struct bfad_itnim_s *itnim;
+	struct scsi_device *sdev;
+	unsigned long flags;
+
+	spin_lock_irqsave(im_port->shost->host_lock, flags);
+	list_for_each_entry(itnim, &im_port->itnim_mapped_list, list_entry) {
+		sdev = __scsi_device_lookup(im_port->shost, itnim->channel,
+					    itnim->scsi_tgt_id, 0);
+		if (sdev) {
+			if (lunmask_cfg == BFA_TRUE)
+				sdev->sdev_bflags |= scan_flags;
+			else
+				sdev->sdev_bflags &= ~scan_flags;
+		}
+	}
+	spin_unlock_irqrestore(im_port->shost->host_lock, flags);
+}
+
 /* Function to reset the LUN SCAN mode */
 static void
 bfad_iocmd_lunmask_reset_lunscan_mode(struct bfad_s *bfad, int lunmask_cfg)
diff --git a/drivers/scsi/bfa/bfad_im.h b/drivers/scsi/bfa/bfad_im.h
index c03b225ea1ba..4353feedf76a 100644
--- a/drivers/scsi/bfa/bfad_im.h
+++ b/drivers/scsi/bfa/bfad_im.h
@@ -198,30 +198,4 @@ irqreturn_t bfad_intx(int irq, void *dev_id);
 int bfad_im_bsg_request(struct bsg_job *job);
 int bfad_im_bsg_timeout(struct bsg_job *job);
 
-/*
- * Macro to set the SCSI device sdev_bflags - sdev_bflags are used by the
- * SCSI mid-layer to choose LUN Scanning mode REPORT_LUNS vs. Sequential Scan
- *
- * Internally iterate's over all the ITNIM's part of the im_port & set's the
- * sdev_bflags for the scsi_device associated with LUN #0.
- */
-#define bfad_reset_sdev_bflags(__im_port, __lunmask_cfg) do {		\
-	struct scsi_device *__sdev = NULL;				\
-	struct bfad_itnim_s *__itnim = NULL;				\
-	u32 scan_flags = BLIST_NOREPORTLUN | BLIST_SPARSELUN;		\
-	list_for_each_entry(__itnim, &((__im_port)->itnim_mapped_list),	\
-			    list_entry) {				\
-		__sdev = scsi_device_lookup((__im_port)->shost,		\
-					    __itnim->channel,		\
-					    __itnim->scsi_tgt_id, 0);	\
-		if (__sdev) {						\
-			if ((__lunmask_cfg) == BFA_TRUE)		\
-				__sdev->sdev_bflags |= scan_flags;	\
-			else						\
-				__sdev->sdev_bflags &= ~scan_flags;	\
-			scsi_device_put(__sdev);			\
-		}							\
-	}								\
-} while (0)
-
 #endif
diff --git a/drivers/scsi/csiostor/csio_wr.c b/drivers/scsi/csiostor/csio_wr.c
index fe0355c964bc..a516df019c22 100644
--- a/drivers/scsi/csiostor/csio_wr.c
+++ b/drivers/scsi/csiostor/csio_wr.c
@@ -1051,7 +1051,6 @@ csio_wr_process_fl(struct csio_hw *hw, struct csio_q *q,
 	struct csio_fl_dma_buf flb;
 	struct csio_dma_buf *buf, *fbuf;
 	uint32_t bufsz, len, lastlen = 0;
-	int n;
 	struct csio_q *flq = hw->wrm.q_arr[q->un.iq.flq_idx];
 
 	CSIO_DB_ASSERT(flq != NULL);
@@ -1071,7 +1070,7 @@ csio_wr_process_fl(struct csio_hw *hw, struct csio_q *q,
 	flb.totlen = len;
 
 	/* Consume all freelist buffers used for len bytes */
-	for (n = 0, fbuf = flb.flbufs; ; n++, fbuf++) {
+	for (fbuf = flb.flbufs; ; fbuf++) {
 		buf = &flq->un.fl.bufs[flq->cidx];
 		bufsz = csio_wr_fl_bufsz(sge, buf);
 
diff --git a/drivers/scsi/device_handler/scsi_dh_alua.c b/drivers/scsi/device_handler/scsi_dh_alua.c
index 610a51538f03..49cc18a87473 100644
--- a/drivers/scsi/device_handler/scsi_dh_alua.c
+++ b/drivers/scsi/device_handler/scsi_dh_alua.c
@@ -354,6 +354,8 @@ static int alua_check_vpd(struct scsi_device *sdev, struct alua_dh_data *h,
 			    "%s: port group %x rel port %x\n",
 			    ALUA_DH_NAME, group_id, rel_port);
 
+	kref_get(&pg->kref);
+
 	/* Check for existing port group references */
 	spin_lock(&h->pg_lock);
 	old_pg = rcu_dereference_protected(h->pg, lockdep_is_held(&h->pg_lock));
@@ -373,11 +375,11 @@ static int alua_check_vpd(struct scsi_device *sdev, struct alua_dh_data *h,
 		list_add_rcu(&h->node, &pg->dh_list);
 	spin_unlock_irqrestore(&pg->lock, flags);
 
-	alua_rtpg_queue(rcu_dereference_protected(h->pg,
-						  lockdep_is_held(&h->pg_lock)),
-			sdev, NULL, true);
 	spin_unlock(&h->pg_lock);
 
+	alua_rtpg_queue(pg, sdev, NULL, true);
+	kref_put(&pg->kref, release_port_group);
+
 	if (old_pg)
 		kref_put(&old_pg->kref, release_port_group);
 
@@ -811,14 +813,19 @@ static unsigned alua_stpg(struct scsi_device *sdev, struct alua_port_group *pg)
 	return SCSI_DH_RETRY;
 }
 
-static bool alua_rtpg_select_sdev(struct alua_port_group *pg)
+/*
+ * The caller must call scsi_device_put() on the returned pointer if it is not
+ * NULL.
+ */
+static struct scsi_device * __must_check
+alua_rtpg_select_sdev(struct alua_port_group *pg)
 {
 	struct alua_dh_data *h;
-	struct scsi_device *sdev = NULL;
+	struct scsi_device *sdev = NULL, *prev_sdev;
 
 	lockdep_assert_held(&pg->lock);
 	if (WARN_ON(!pg->rtpg_sdev))
-		return false;
+		return NULL;
 
 	/*
 	 * RCU protection isn't necessary for dh_list here
@@ -845,22 +852,22 @@ static bool alua_rtpg_select_sdev(struct alua_port_group *pg)
 		pr_warn("%s: no device found for rtpg\n",
 			(pg->device_id_len ?
 			 (char *)pg->device_id_str : "(nameless PG)"));
-		return false;
+		return NULL;
 	}
 
 	sdev_printk(KERN_INFO, sdev, "rtpg retry on different device\n");
 
-	scsi_device_put(pg->rtpg_sdev);
+	prev_sdev = pg->rtpg_sdev;
 	pg->rtpg_sdev = sdev;
 
-	return true;
+	return prev_sdev;
 }
 
 static void alua_rtpg_work(struct work_struct *work)
 {
 	struct alua_port_group *pg =
 		container_of(work, struct alua_port_group, rtpg_work.work);
-	struct scsi_device *sdev;
+	struct scsi_device *sdev, *prev_sdev = NULL;
 	LIST_HEAD(qdata_list);
 	int err = SCSI_DH_OK;
 	struct alua_queue_data *qdata, *tmp;
@@ -901,7 +908,7 @@ static void alua_rtpg_work(struct work_struct *work)
 
 		/* If RTPG failed on the current device, try using another */
 		if (err == SCSI_DH_RES_TEMP_UNAVAIL &&
-		    alua_rtpg_select_sdev(pg))
+		    (prev_sdev = alua_rtpg_select_sdev(pg)))
 			err = SCSI_DH_IMM_RETRY;
 
 		if (err == SCSI_DH_RETRY || err == SCSI_DH_IMM_RETRY ||
@@ -913,9 +920,7 @@ static void alua_rtpg_work(struct work_struct *work)
 				pg->interval = ALUA_RTPG_RETRY_DELAY;
 			pg->flags |= ALUA_PG_RUN_RTPG;
 			spin_unlock_irqrestore(&pg->lock, flags);
-			queue_delayed_work(kaluad_wq, &pg->rtpg_work,
-					   pg->interval * HZ);
-			return;
+			goto queue_rtpg;
 		}
 		if (err != SCSI_DH_OK)
 			pg->flags &= ~ALUA_PG_RUN_STPG;
@@ -930,9 +935,7 @@ static void alua_rtpg_work(struct work_struct *work)
 			pg->interval = 0;
 			pg->flags &= ~ALUA_PG_RUNNING;
 			spin_unlock_irqrestore(&pg->lock, flags);
-			queue_delayed_work(kaluad_wq, &pg->rtpg_work,
-					   pg->interval * HZ);
-			return;
+			goto queue_rtpg;
 		}
 	}
 
@@ -946,6 +949,9 @@ static void alua_rtpg_work(struct work_struct *work)
 	pg->rtpg_sdev = NULL;
 	spin_unlock_irqrestore(&pg->lock, flags);
 
+	if (prev_sdev)
+		scsi_device_put(prev_sdev);
+
 	list_for_each_entry_safe(qdata, tmp, &qdata_list, entry) {
 		list_del(&qdata->entry);
 		if (qdata->callback_fn)
@@ -957,6 +963,12 @@ static void alua_rtpg_work(struct work_struct *work)
 	spin_unlock_irqrestore(&pg->lock, flags);
 	scsi_device_put(sdev);
 	kref_put(&pg->kref, release_port_group);
+	return;
+
+queue_rtpg:
+	if (prev_sdev)
+		scsi_device_put(prev_sdev);
+	queue_delayed_work(kaluad_wq, &pg->rtpg_work, pg->interval * HZ);
 }
 
 /**
@@ -976,6 +988,9 @@ static bool alua_rtpg_queue(struct alua_port_group *pg,
 {
 	int start_queue = 0;
 	unsigned long flags;
+
+	might_sleep();
+
 	if (WARN_ON_ONCE(!pg) || scsi_device_get(sdev))
 		return false;
 
@@ -986,11 +1001,17 @@ static bool alua_rtpg_queue(struct alua_port_group *pg,
 		force = true;
 	}
 	if (pg->rtpg_sdev == NULL) {
-		pg->interval = 0;
-		pg->flags |= ALUA_PG_RUN_RTPG;
-		kref_get(&pg->kref);
-		pg->rtpg_sdev = sdev;
-		start_queue = 1;
+		struct alua_dh_data *h = sdev->handler_data;
+
+		rcu_read_lock();
+		if (h && rcu_dereference(h->pg) == pg) {
+			pg->interval = 0;
+			pg->flags |= ALUA_PG_RUN_RTPG;
+			kref_get(&pg->kref);
+			pg->rtpg_sdev = sdev;
+			start_queue = 1;
+		}
+		rcu_read_unlock();
 	} else if (!(pg->flags & ALUA_PG_RUN_RTPG) && force) {
 		pg->flags |= ALUA_PG_RUN_RTPG;
 		/* Do not queue if the worker is already running */
diff --git a/drivers/scsi/elx/efct/efct_driver.c b/drivers/scsi/elx/efct/efct_driver.c
index b08fc8839808..49fd2cfed70c 100644
--- a/drivers/scsi/elx/efct/efct_driver.c
+++ b/drivers/scsi/elx/efct/efct_driver.c
@@ -42,6 +42,7 @@ efct_device_init(void)
 
 	rc = efct_scsi_reg_fc_transport();
 	if (rc) {
+		efct_scsi_tgt_driver_exit();
 		pr_err("failed to register to FC host\n");
 		return rc;
 	}
diff --git a/drivers/scsi/elx/libefc/efclib.h b/drivers/scsi/elx/libefc/efclib.h
index dde20891c2dd..57e338612812 100644
--- a/drivers/scsi/elx/libefc/efclib.h
+++ b/drivers/scsi/elx/libefc/efclib.h
@@ -58,10 +58,12 @@ enum efc_node_send_ls_acc {
 #define EFC_LINK_STATUS_UP		0
 #define EFC_LINK_STATUS_DOWN		1
 
+enum efc_sm_event;
+
 /* State machine context header  */
 struct efc_sm_ctx {
 	void (*current_state)(struct efc_sm_ctx *ctx,
-			      u32 evt, void *arg);
+			      enum efc_sm_event evt, void *arg);
 
 	const char	*description;
 	void		*app;
@@ -365,7 +367,7 @@ struct efc_node {
 	int			prev_evt;
 
 	void (*nodedb_state)(struct efc_sm_ctx *ctx,
-			     u32 evt, void *arg);
+			     enum efc_sm_event evt, void *arg);
 	struct timer_list	gidpt_delay_timer;
 	u64			time_last_gidpt_msec;
 
diff --git a/drivers/scsi/esas2r/esas2r_main.c b/drivers/scsi/esas2r/esas2r_main.c
index 7a4eadad23d7..d7a2c49ff5ee 100644
--- a/drivers/scsi/esas2r/esas2r_main.c
+++ b/drivers/scsi/esas2r/esas2r_main.c
@@ -248,8 +248,6 @@ static struct scsi_host_template driver_template = {
 	.sg_tablesize			= SG_CHUNK_SIZE,
 	.cmd_per_lun			=
 		ESAS2R_DEFAULT_CMD_PER_LUN,
-	.present			= 0,
-	.emulated			= 0,
 	.proc_name			= ESAS2R_DRVR_NAME,
 	.change_queue_depth		= scsi_change_queue_depth,
 	.max_sectors			= 0xFFFF,
@@ -637,10 +635,13 @@ static void __exit esas2r_exit(void)
 	esas2r_log(ESAS2R_LOG_INFO, "%s called", __func__);
 
 	if (esas2r_proc_major > 0) {
+		struct proc_dir_entry *proc_dir;
+
 		esas2r_log(ESAS2R_LOG_INFO, "unregister proc");
 
-		remove_proc_entry(ATTONODE_NAME,
-				  esas2r_proc_host->hostt->proc_dir);
+		proc_dir = scsi_template_proc_dir(esas2r_proc_host->hostt);
+		if (proc_dir)
+			remove_proc_entry(ATTONODE_NAME, proc_dir);
 		unregister_chrdev(esas2r_proc_major, ESAS2R_DRVR_NAME);
 
 		esas2r_proc_major = 0;
@@ -730,11 +731,13 @@ const char *esas2r_info(struct Scsi_Host *sh)
 			       esas2r_proc_major);
 
 		if (esas2r_proc_major > 0) {
-			struct proc_dir_entry *pde;
+			struct proc_dir_entry *proc_dir;
+			struct proc_dir_entry *pde = NULL;
 
-			pde = proc_create(ATTONODE_NAME, 0,
-					  sh->hostt->proc_dir,
-					  &esas2r_proc_ops);
+			proc_dir = scsi_template_proc_dir(sh->hostt);
+			if (proc_dir)
+				pde = proc_create(ATTONODE_NAME, 0, proc_dir,
+						  &esas2r_proc_ops);
 
 			if (!pde) {
 				esas2r_log_dev(ESAS2R_LOG_WARN,
diff --git a/drivers/scsi/fcoe/fcoe.c b/drivers/scsi/fcoe/fcoe.c
index 6ec296321ffc..38774a272e62 100644
--- a/drivers/scsi/fcoe/fcoe.c
+++ b/drivers/scsi/fcoe/fcoe.c
@@ -2491,6 +2491,7 @@ static int __init fcoe_init(void)
 
 out_free:
 	mutex_unlock(&fcoe_config_mutex);
+	fcoe_transport_detach(&fcoe_sw_transport);
 out_destroy:
 	destroy_workqueue(fcoe_wq);
 	return rc;
diff --git a/drivers/scsi/fcoe/fcoe_sysfs.c b/drivers/scsi/fcoe/fcoe_sysfs.c
index af658aa38fed..6260aa5ea6af 100644
--- a/drivers/scsi/fcoe/fcoe_sysfs.c
+++ b/drivers/scsi/fcoe/fcoe_sysfs.c
@@ -830,14 +830,15 @@ struct fcoe_ctlr_device *fcoe_ctlr_device_add(struct device *parent,
 
 	dev_set_name(&ctlr->dev, "ctlr_%d", ctlr->id);
 	error = device_register(&ctlr->dev);
-	if (error)
-		goto out_del_q2;
+	if (error) {
+		destroy_workqueue(ctlr->devloss_work_q);
+		destroy_workqueue(ctlr->work_q);
+		put_device(&ctlr->dev);
+		return NULL;
+	}
 
 	return ctlr;
 
-out_del_q2:
-	destroy_workqueue(ctlr->devloss_work_q);
-	ctlr->devloss_work_q = NULL;
 out_del_q:
 	destroy_workqueue(ctlr->work_q);
 	ctlr->work_q = NULL;
@@ -1036,16 +1037,16 @@ struct fcoe_fcf_device *fcoe_fcf_device_add(struct fcoe_ctlr_device *ctlr,
 	fcf->selected = new_fcf->selected;
 
 	error = device_register(&fcf->dev);
-	if (error)
-		goto out_del;
+	if (error) {
+		put_device(&fcf->dev);
+		goto out;
+	}
 
 	fcf->state = FCOE_FCF_STATE_CONNECTED;
 	list_add_tail(&fcf->peers, &ctlr->fcfs);
 
 	return fcf;
 
-out_del:
-	kfree(fcf);
 out:
 	return NULL;
 }
diff --git a/drivers/scsi/hisi_sas/hisi_sas.h b/drivers/scsi/hisi_sas/hisi_sas.h
index 9aebf4a26b13..6f8a52a1b808 100644
--- a/drivers/scsi/hisi_sas/hisi_sas.h
+++ b/drivers/scsi/hisi_sas/hisi_sas.h
@@ -104,6 +104,7 @@ enum {
 enum dev_status {
 	HISI_SAS_DEV_INIT,
 	HISI_SAS_DEV_NORMAL,
+	HISI_SAS_DEV_NCQ_ERR,
 };
 
 enum {
diff --git a/drivers/scsi/hisi_sas/hisi_sas_main.c b/drivers/scsi/hisi_sas/hisi_sas_main.c
index 699b07abb6b0..41ba22f6c7f0 100644
--- a/drivers/scsi/hisi_sas/hisi_sas_main.c
+++ b/drivers/scsi/hisi_sas/hisi_sas_main.c
@@ -177,22 +177,22 @@ static void hisi_sas_slot_index_set(struct hisi_hba *hisi_hba, int slot_idx)
 }
 
 static int hisi_sas_slot_index_alloc(struct hisi_hba *hisi_hba,
-				     struct scsi_cmnd *scsi_cmnd)
+				     struct request *rq)
 {
 	int index;
 	void *bitmap = hisi_hba->slot_index_tags;
 
-	if (scsi_cmnd)
-		return scsi_cmd_to_rq(scsi_cmnd)->tag;
+	if (rq)
+		return rq->tag + HISI_SAS_RESERVED_IPTT;
 
 	spin_lock(&hisi_hba->lock);
-	index = find_next_zero_bit(bitmap, hisi_hba->slot_index_count,
+	index = find_next_zero_bit(bitmap, HISI_SAS_RESERVED_IPTT,
 				   hisi_hba->last_slot_index + 1);
-	if (index >= hisi_hba->slot_index_count) {
+	if (index >= HISI_SAS_RESERVED_IPTT) {
 		index = find_next_zero_bit(bitmap,
-				hisi_hba->slot_index_count,
-				HISI_SAS_UNRESERVED_IPTT);
-		if (index >= hisi_hba->slot_index_count) {
+				HISI_SAS_RESERVED_IPTT,
+				0);
+		if (index >= HISI_SAS_RESERVED_IPTT) {
 			spin_unlock(&hisi_hba->lock);
 			return -SAS_QUEUE_FULL;
 		}
@@ -461,11 +461,11 @@ static int hisi_sas_queue_command(struct sas_task *task, gfp_t gfp_flags)
 	struct asd_sas_port *sas_port = device->port;
 	struct hisi_sas_device *sas_dev = device->lldd_dev;
 	bool internal_abort = sas_is_internal_abort(task);
-	struct scsi_cmnd *scmd = NULL;
 	struct hisi_sas_dq *dq = NULL;
 	struct hisi_sas_port *port;
 	struct hisi_hba *hisi_hba;
 	struct hisi_sas_slot *slot;
+	struct request *rq = NULL;
 	struct device *dev;
 	int rc;
 
@@ -520,22 +520,12 @@ static int hisi_sas_queue_command(struct sas_task *task, gfp_t gfp_flags)
 				return -ECOMM;
 		}
 
-		if (task->uldd_task) {
-			struct ata_queued_cmd *qc;
-
-			if (dev_is_sata(device)) {
-				qc = task->uldd_task;
-				scmd = qc->scsicmd;
-			} else {
-				scmd = task->uldd_task;
-			}
-		}
-
-		if (scmd) {
+		rq = sas_task_find_rq(task);
+		if (rq) {
 			unsigned int dq_index;
 			u32 blk_tag;
 
-			blk_tag = blk_mq_unique_tag(scsi_cmd_to_rq(scmd));
+			blk_tag = blk_mq_unique_tag(rq);
 			dq_index = blk_mq_unique_tag_to_hwq(blk_tag);
 			dq = &hisi_hba->dq[dq_index];
 		} else {
@@ -580,7 +570,7 @@ static int hisi_sas_queue_command(struct sas_task *task, gfp_t gfp_flags)
 	if (!internal_abort && hisi_hba->hw->slot_index_alloc)
 		rc = hisi_hba->hw->slot_index_alloc(hisi_hba, device);
 	else
-		rc = hisi_sas_slot_index_alloc(hisi_hba, scmd);
+		rc = hisi_sas_slot_index_alloc(hisi_hba, rq);
 
 	if (rc < 0)
 		goto err_out_dif_dma_unmap;
@@ -792,22 +782,14 @@ static int hisi_sas_dev_found(struct domain_device *device)
 
 	if (parent_dev && dev_is_expander(parent_dev->dev_type)) {
 		int phy_no;
-		u8 phy_num = parent_dev->ex_dev.num_phys;
-		struct ex_phy *phy;
-
-		for (phy_no = 0; phy_no < phy_num; phy_no++) {
-			phy = &parent_dev->ex_dev.ex_phy[phy_no];
-			if (SAS_ADDR(phy->attached_sas_addr) ==
-				SAS_ADDR(device->sas_addr))
-				break;
-		}
 
-		if (phy_no == phy_num) {
+		phy_no = sas_find_attached_phy_id(&parent_dev->ex_dev, device);
+		if (phy_no < 0) {
 			dev_info(dev, "dev found: no attached "
 				 "dev:%016llx at ex:%016llx\n",
 				 SAS_ADDR(device->sas_addr),
 				 SAS_ADDR(parent_dev->sas_addr));
-			rc = -EINVAL;
+			rc = phy_no;
 			goto err_out;
 		}
 	}
@@ -1341,7 +1323,6 @@ static void hisi_sas_refresh_port_id(struct hisi_hba *hisi_hba)
 
 static void hisi_sas_rescan_topology(struct hisi_hba *hisi_hba, u32 state)
 {
-	struct sas_ha_struct *sas_ha = &hisi_hba->sha;
 	struct asd_sas_port *_sas_port = NULL;
 	int phy_no;
 
@@ -1370,12 +1351,6 @@ static void hisi_sas_rescan_topology(struct hisi_hba *hisi_hba, u32 state)
 			hisi_sas_phy_down(hisi_hba, phy_no, 0, GFP_KERNEL);
 		}
 	}
-	/*
-	 * Ensure any bcast events are processed prior to calling async nexus
-	 * reset calls from hisi_sas_clear_nexus_ha() ->
-	 * hisi_sas_async_I_T_nexus_reset()
-	 */
-	sas_drain_work(sas_ha);
 }
 
 static void hisi_sas_reset_init_all_devices(struct hisi_hba *hisi_hba)
@@ -1547,6 +1522,7 @@ static int hisi_sas_abort_task(struct sas_task *task)
 	struct hisi_sas_internal_abort_data internal_abort_data = { false };
 	struct domain_device *device = task->dev;
 	struct hisi_sas_device *sas_dev = device->lldd_dev;
+	struct hisi_sas_slot *slot = task->lldd_task;
 	struct hisi_hba *hisi_hba;
 	struct device *dev;
 	int rc = TMF_RESP_FUNC_FAILED;
@@ -1560,7 +1536,6 @@ static int hisi_sas_abort_task(struct sas_task *task)
 
 	spin_lock_irqsave(&task->task_state_lock, flags);
 	if (task->task_state_flags & SAS_TASK_STATE_DONE) {
-		struct hisi_sas_slot *slot = task->lldd_task;
 		struct hisi_sas_cq *cq;
 
 		if (slot) {
@@ -1578,8 +1553,7 @@ static int hisi_sas_abort_task(struct sas_task *task)
 	task->task_state_flags |= SAS_TASK_STATE_ABORTED;
 	spin_unlock_irqrestore(&task->task_state_lock, flags);
 
-	if (task->lldd_task && task->task_proto & SAS_PROTOCOL_SSP) {
-		struct hisi_sas_slot *slot = task->lldd_task;
+	if (slot && task->task_proto & SAS_PROTOCOL_SSP) {
 		u16 tag = slot->idx;
 		int rc2;
 
@@ -1605,17 +1579,29 @@ static int hisi_sas_abort_task(struct sas_task *task)
 	} else if (task->task_proto & SAS_PROTOCOL_SATA ||
 		task->task_proto & SAS_PROTOCOL_STP) {
 		if (task->dev->dev_type == SAS_SATA_DEV) {
+			struct ata_queued_cmd *qc = task->uldd_task;
+
 			rc = hisi_sas_internal_task_abort_dev(sas_dev, false);
 			if (rc < 0) {
 				dev_err(dev, "abort task: internal abort failed\n");
 				goto out;
 			}
 			hisi_sas_dereg_device(hisi_hba, device);
-			rc = hisi_sas_softreset_ata_disk(device);
+
+			/*
+			 * If an ATA internal command times out in ATA EH, it
+			 * need to execute soft reset, so check the scsicmd
+			 */
+			if ((sas_dev->dev_status == HISI_SAS_DEV_NCQ_ERR) &&
+			    qc && qc->scsicmd) {
+				hisi_sas_do_release_task(hisi_hba, task, slot);
+				rc = TMF_RESP_FUNC_COMPLETE;
+			} else {
+				rc = hisi_sas_softreset_ata_disk(device);
+			}
 		}
-	} else if (task->lldd_task && task->task_proto & SAS_PROTOCOL_SMP) {
+	} else if (slot && task->task_proto & SAS_PROTOCOL_SMP) {
 		/* SMP */
-		struct hisi_sas_slot *slot = task->lldd_task;
 		u32 tag = slot->idx;
 		struct hisi_sas_cq *cq = &hisi_hba->cq[slot->dlvry_queue];
 
@@ -1708,13 +1694,15 @@ static int hisi_sas_debug_I_T_nexus_reset(struct domain_device *device)
 		return rc;
 	}
 
+	/* Remote phy */
 	if (rc)
 		return rc;
 
-	/* Remote phy */
 	if (dev_is_sata(device)) {
-		rc = sas_ata_wait_after_reset(device,
-					HISI_SAS_WAIT_PHYUP_TIMEOUT);
+		struct ata_link *link = &device->sata_dev.ap->link;
+
+		rc = ata_wait_after_reset(link, HISI_SAS_WAIT_PHYUP_TIMEOUT,
+					  smp_ata_check_ready_type);
 	} else {
 		msleep(2000);
 	}
@@ -1729,6 +1717,9 @@ static int hisi_sas_I_T_nexus_reset(struct domain_device *device)
 	struct device *dev = hisi_hba->dev;
 	int rc;
 
+	if (sas_dev->dev_status == HISI_SAS_DEV_NCQ_ERR)
+		sas_dev->dev_status = HISI_SAS_DEV_NORMAL;
+
 	rc = hisi_sas_internal_task_abort_dev(sas_dev, false);
 	if (rc < 0) {
 		dev_err(dev, "I_T nexus reset: internal abort (%d)\n", rc);
@@ -1823,14 +1814,12 @@ static int hisi_sas_clear_nexus_ha(struct sas_ha_struct *sas_ha)
 	struct hisi_hba *hisi_hba = sas_ha->lldd_ha;
 	HISI_SAS_DECLARE_RST_WORK_ON_STACK(r);
 	ASYNC_DOMAIN_EXCLUSIVE(async);
-	int i, ret;
+	int i;
 
 	queue_work(hisi_hba->wq, &r.work);
 	wait_for_completion(r.completion);
-	if (!r.done) {
-		ret = TMF_RESP_FUNC_FAILED;
-		goto out;
-	}
+	if (!r.done)
+		return TMF_RESP_FUNC_FAILED;
 
 	for (i = 0; i < HISI_SAS_MAX_DEVICES; i++) {
 		struct hisi_sas_device *sas_dev = &hisi_hba->devices[i];
@@ -1847,9 +1836,7 @@ static int hisi_sas_clear_nexus_ha(struct sas_ha_struct *sas_ha)
 	async_synchronize_full_domain(&async);
 	hisi_sas_release_tasks(hisi_hba);
 
-	ret = TMF_RESP_FUNC_COMPLETE;
-out:
-	return ret;
+	return TMF_RESP_FUNC_COMPLETE;
 }
 
 static int hisi_sas_query_task(struct sas_task *task)
@@ -1997,14 +1984,10 @@ void hisi_sas_phy_bcast(struct hisi_sas_phy *phy)
 {
 	struct asd_sas_phy *sas_phy = &phy->sas_phy;
 	struct hisi_hba	*hisi_hba = phy->hisi_hba;
-	struct sas_ha_struct *sha = &hisi_hba->sha;
 
 	if (test_bit(HISI_SAS_RESETTING_BIT, &hisi_hba->flags))
 		return;
 
-	if (test_bit(SAS_HA_FROZEN, &sha->state))
-		return;
-
 	sas_notify_port_event(sas_phy, PORTE_BROADCAST_RCVD, GFP_ATOMIC);
 }
 EXPORT_SYMBOL_GPL(hisi_sas_phy_bcast);
@@ -2220,7 +2203,7 @@ int hisi_sas_alloc(struct hisi_hba *hisi_hba)
 	if (!hisi_hba->sata_breakpoint)
 		goto err_out;
 
-	hisi_hba->last_slot_index = HISI_SAS_UNRESERVED_IPTT;
+	hisi_hba->last_slot_index = 0;
 
 	hisi_hba->wq = create_singlethread_workqueue(dev_name(dev));
 	if (!hisi_hba->wq) {
diff --git a/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c b/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c
index d56b4bfd2767..0c3fcb807806 100644
--- a/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c
+++ b/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c
@@ -404,6 +404,11 @@
 #define CMPLT_HDR_CMPLT_MSK		(0x3 << CMPLT_HDR_CMPLT_OFF)
 #define CMPLT_HDR_ERROR_PHASE_OFF   2
 #define CMPLT_HDR_ERROR_PHASE_MSK   (0xff << CMPLT_HDR_ERROR_PHASE_OFF)
+/* bit[9:2] Error Phase */
+#define ERR_PHASE_RESPONSE_FRAME_REV_STAGE_OFF	\
+					8
+#define ERR_PHASE_RESPONSE_FRAME_REV_STAGE_MSK	\
+	(0x1 << ERR_PHASE_RESPONSE_FRAME_REV_STAGE_OFF)
 #define CMPLT_HDR_RSPNS_XFRD_OFF	10
 #define CMPLT_HDR_RSPNS_XFRD_MSK	(0x1 << CMPLT_HDR_RSPNS_XFRD_OFF)
 #define CMPLT_HDR_RSPNS_GOOD_OFF	11
@@ -423,8 +428,17 @@
 #define CMPLT_HDR_DEV_ID_OFF		16
 #define CMPLT_HDR_DEV_ID_MSK		(0xffff << CMPLT_HDR_DEV_ID_OFF)
 /* dw3 */
+#define SATA_DISK_IN_ERROR_STATUS_OFF	8
+#define SATA_DISK_IN_ERROR_STATUS_MSK	(0x1 << SATA_DISK_IN_ERROR_STATUS_OFF)
+#define CMPLT_HDR_SATA_DISK_ERR_OFF	16
+#define CMPLT_HDR_SATA_DISK_ERR_MSK	(0x1 << CMPLT_HDR_SATA_DISK_ERR_OFF)
 #define CMPLT_HDR_IO_IN_TARGET_OFF	17
 #define CMPLT_HDR_IO_IN_TARGET_MSK	(0x1 << CMPLT_HDR_IO_IN_TARGET_OFF)
+/* bit[23:18] ERR_FIS_ATA_STATUS */
+#define FIS_ATA_STATUS_ERR_OFF		18
+#define FIS_ATA_STATUS_ERR_MSK		(0x1 << FIS_ATA_STATUS_ERR_OFF)
+#define FIS_TYPE_SDB_OFF		31
+#define FIS_TYPE_SDB_MSK		(0x1 << FIS_TYPE_SDB_OFF)
 
 /* ITCT header */
 /* qw0 */
@@ -2148,6 +2162,18 @@ static irqreturn_t fatal_axi_int_v3_hw(int irq_no, void *p)
 	return IRQ_HANDLED;
 }
 
+static bool is_ncq_err_v3_hw(struct hisi_sas_complete_v3_hdr *complete_hdr)
+{
+	u32 dw0, dw3;
+
+	dw0 = le32_to_cpu(complete_hdr->dw0);
+	dw3 = le32_to_cpu(complete_hdr->dw3);
+
+	return (dw0 & ERR_PHASE_RESPONSE_FRAME_REV_STAGE_MSK) &&
+	       (dw3 & FIS_TYPE_SDB_MSK) &&
+	       (dw3 & FIS_ATA_STATUS_ERR_MSK);
+}
+
 static bool
 slot_err_v3_hw(struct hisi_hba *hisi_hba, struct sas_task *task,
 	       struct hisi_sas_slot *slot)
@@ -2195,7 +2221,8 @@ slot_err_v3_hw(struct hisi_hba *hisi_hba, struct sas_task *task,
 		} else if (dma_rx_err_type & RX_DATA_LEN_UNDERFLOW_MSK) {
 			ts->residual = trans_tx_fail_type;
 			ts->stat = SAS_DATA_UNDERRUN;
-		} else if (dw3 & CMPLT_HDR_IO_IN_TARGET_MSK) {
+		} else if ((dw3 & CMPLT_HDR_IO_IN_TARGET_MSK) ||
+			   (dw3 & SATA_DISK_IN_ERROR_STATUS_MSK)) {
 			ts->stat = SAS_PHY_DOWN;
 			slot->abort = 1;
 		} else {
@@ -2381,14 +2408,34 @@ static irqreturn_t  cq_thread_v3_hw(int irq_no, void *p)
 	while (rd_point != wr_point) {
 		struct hisi_sas_complete_v3_hdr *complete_hdr;
 		struct device *dev = hisi_hba->dev;
-		u32 dw1;
+		u32 dw0, dw1, dw3;
 		int iptt;
 
 		complete_hdr = &complete_queue[rd_point];
+		dw0 = le32_to_cpu(complete_hdr->dw0);
 		dw1 = le32_to_cpu(complete_hdr->dw1);
+		dw3 = le32_to_cpu(complete_hdr->dw3);
 
 		iptt = dw1 & CMPLT_HDR_IPTT_MSK;
-		if (likely(iptt < HISI_SAS_COMMAND_ENTRIES_V3_HW)) {
+		if (unlikely((dw0 & CMPLT_HDR_CMPLT_MSK) == 0x3) &&
+			     (dw3 & CMPLT_HDR_SATA_DISK_ERR_MSK)) {
+			int device_id = (dw1 & CMPLT_HDR_DEV_ID_MSK) >>
+					CMPLT_HDR_DEV_ID_OFF;
+			struct hisi_sas_itct *itct =
+				&hisi_hba->itct[device_id];
+			struct hisi_sas_device *sas_dev =
+				&hisi_hba->devices[device_id];
+			struct domain_device *device = sas_dev->sas_device;
+
+			dev_err(dev, "erroneous completion disk err dev id=%d sas_addr=0x%llx CQ hdr: 0x%x 0x%x 0x%x 0x%x\n",
+				device_id, itct->sas_addr, dw0, dw1,
+				complete_hdr->act, dw3);
+
+			if (is_ncq_err_v3_hw(complete_hdr))
+				sas_dev->dev_status = HISI_SAS_DEV_NCQ_ERR;
+
+			sas_ata_device_link_abort(device, true);
+		} else if (likely(iptt < HISI_SAS_COMMAND_ENTRIES_V3_HW)) {
 			slot = &hisi_hba->slot_info[iptt];
 			slot->cmplt_queue_slot = rd_point;
 			slot->cmplt_queue = queue;
diff --git a/drivers/scsi/hosts.c b/drivers/scsi/hosts.c
index 9857dba09c95..12346e2297fd 100644
--- a/drivers/scsi/hosts.c
+++ b/drivers/scsi/hosts.c
@@ -519,7 +519,8 @@ struct Scsi_Host *scsi_host_alloc(struct scsi_host_template *sht, int privsize)
 			     "failed to create tmf workq\n");
 		goto fail;
 	}
-	scsi_proc_hostdir_add(shost->hostt);
+	if (scsi_proc_hostdir_add(shost->hostt) < 0)
+		goto fail;
 	return shost;
  fail:
 	/*
diff --git a/drivers/scsi/hpsa.c b/drivers/scsi/hpsa.c
index f8e832b1bc46..4dbf51e2623a 100644
--- a/drivers/scsi/hpsa.c
+++ b/drivers/scsi/hpsa.c
@@ -8925,7 +8925,7 @@ clean1:	/* wq/aer/h */
 		destroy_workqueue(h->monitor_ctlr_wq);
 		h->monitor_ctlr_wq = NULL;
 	}
-	kfree(h);
+	hpda_free_ctlr_info(h);
 	return rc;
 }
 
@@ -9786,7 +9786,8 @@ static int hpsa_add_sas_host(struct ctlr_info *h)
 	return 0;
 
 free_sas_phy:
-	hpsa_free_sas_phy(hpsa_sas_phy);
+	sas_phy_free(hpsa_sas_phy->phy);
+	kfree(hpsa_sas_phy);
 free_sas_port:
 	hpsa_free_sas_port(hpsa_sas_port);
 free_sas_node:
@@ -9822,10 +9823,12 @@ static int hpsa_add_sas_device(struct hpsa_sas_node *hpsa_sas_node,
 
 	rc = hpsa_sas_port_add_rphy(hpsa_sas_port, rphy);
 	if (rc)
-		goto free_sas_port;
+		goto free_sas_rphy;
 
 	return 0;
 
+free_sas_rphy:
+	sas_rphy_free(rphy);
 free_sas_port:
 	hpsa_free_sas_port(hpsa_sas_port);
 	device->sas_port = NULL;
diff --git a/drivers/scsi/ipr.c b/drivers/scsi/ipr.c
index 9d01a3e3c26a..2022ffb45041 100644
--- a/drivers/scsi/ipr.c
+++ b/drivers/scsi/ipr.c
@@ -10872,11 +10872,19 @@ static struct notifier_block ipr_notifier = {
  **/
 static int __init ipr_init(void)
 {
+	int rc;
+
 	ipr_info("IBM Power RAID SCSI Device Driver version: %s %s\n",
 		 IPR_DRIVER_VERSION, IPR_DRIVER_DATE);
 
 	register_reboot_notifier(&ipr_notifier);
-	return pci_register_driver(&ipr_driver);
+	rc = pci_register_driver(&ipr_driver);
+	if (rc) {
+		unregister_reboot_notifier(&ipr_notifier);
+		return rc;
+	}
+
+	return 0;
 }
 
 /**
diff --git a/drivers/scsi/libfc/fc_disc.c b/drivers/scsi/libfc/fc_disc.c
index 942fc60f7c21..0f32ded246d0 100644
--- a/drivers/scsi/libfc/fc_disc.c
+++ b/drivers/scsi/libfc/fc_disc.c
@@ -75,7 +75,6 @@ static void fc_disc_recv_rscn_req(struct fc_disc *disc, struct fc_frame *fp)
 	struct fc_seq_els_data rjt_data;
 	unsigned int len;
 	int redisc = 0;
-	enum fc_els_rscn_ev_qual ev_qual;
 	enum fc_els_rscn_addr_fmt fmt;
 	LIST_HEAD(disc_ports);
 	struct fc_disc_port *dp, *next;
@@ -107,8 +106,6 @@ static void fc_disc_recv_rscn_req(struct fc_disc *disc, struct fc_frame *fp)
 		goto reject;
 
 	for (pp = (void *)(rp + 1); len > 0; len -= sizeof(*pp), pp++) {
-		ev_qual = pp->rscn_page_flags >> ELS_RSCN_EV_QUAL_BIT;
-		ev_qual &= ELS_RSCN_EV_QUAL_MASK;
 		fmt = pp->rscn_page_flags >> ELS_RSCN_ADDR_FMT_BIT;
 		fmt &= ELS_RSCN_ADDR_FMT_MASK;
 		/*
diff --git a/drivers/scsi/libiscsi.c b/drivers/scsi/libiscsi.c
index d95f4bcdeb2e..ef2fc860257e 100644
--- a/drivers/scsi/libiscsi.c
+++ b/drivers/scsi/libiscsi.c
@@ -2071,9 +2071,9 @@ static int iscsi_has_ping_timed_out(struct iscsi_conn *conn)
 		return 0;
 }
 
-enum blk_eh_timer_return iscsi_eh_cmd_timed_out(struct scsi_cmnd *sc)
+enum scsi_timeout_action iscsi_eh_cmd_timed_out(struct scsi_cmnd *sc)
 {
-	enum blk_eh_timer_return rc = BLK_EH_DONE;
+	enum scsi_timeout_action rc = SCSI_EH_NOT_HANDLED;
 	struct iscsi_task *task = NULL, *running_task;
 	struct iscsi_cls_session *cls_session;
 	struct iscsi_session *session;
@@ -2093,7 +2093,7 @@ enum blk_eh_timer_return iscsi_eh_cmd_timed_out(struct scsi_cmnd *sc)
 		 * Raced with completion. Blk layer has taken ownership
 		 * so let timeout code complete it now.
 		 */
-		rc = BLK_EH_DONE;
+		rc = SCSI_EH_NOT_HANDLED;
 		spin_unlock(&session->back_lock);
 		goto done;
 	}
@@ -2102,7 +2102,7 @@ enum blk_eh_timer_return iscsi_eh_cmd_timed_out(struct scsi_cmnd *sc)
 		 * Racing with the completion path right now, so give it more
 		 * time so that path can complete it like normal.
 		 */
-		rc = BLK_EH_RESET_TIMER;
+		rc = SCSI_EH_RESET_TIMER;
 		task = NULL;
 		spin_unlock(&session->back_lock);
 		goto done;
@@ -2120,21 +2120,21 @@ enum blk_eh_timer_return iscsi_eh_cmd_timed_out(struct scsi_cmnd *sc)
 		if (unlikely(system_state != SYSTEM_RUNNING)) {
 			sc->result = DID_NO_CONNECT << 16;
 			ISCSI_DBG_EH(session, "sc on shutdown, handled\n");
-			rc = BLK_EH_DONE;
+			rc = SCSI_EH_NOT_HANDLED;
 			goto done;
 		}
 		/*
 		 * We are probably in the middle of iscsi recovery so let
 		 * that complete and handle the error.
 		 */
-		rc = BLK_EH_RESET_TIMER;
+		rc = SCSI_EH_RESET_TIMER;
 		goto done;
 	}
 
 	conn = session->leadconn;
 	if (!conn) {
 		/* In the middle of shuting down */
-		rc = BLK_EH_RESET_TIMER;
+		rc = SCSI_EH_RESET_TIMER;
 		goto done;
 	}
 
@@ -2151,7 +2151,7 @@ enum blk_eh_timer_return iscsi_eh_cmd_timed_out(struct scsi_cmnd *sc)
 			     "Last data xfer at %lu. Last timeout was at "
 			     "%lu\n.", task->last_xfer, task->last_timeout);
 		task->have_checked_conn = false;
-		rc = BLK_EH_RESET_TIMER;
+		rc = SCSI_EH_RESET_TIMER;
 		goto done;
 	}
 
@@ -2162,7 +2162,7 @@ enum blk_eh_timer_return iscsi_eh_cmd_timed_out(struct scsi_cmnd *sc)
 	 * and can let the iscsi eh handle it
 	 */
 	if (iscsi_has_ping_timed_out(conn)) {
-		rc = BLK_EH_RESET_TIMER;
+		rc = SCSI_EH_RESET_TIMER;
 		goto done;
 	}
 
@@ -2200,7 +2200,7 @@ enum blk_eh_timer_return iscsi_eh_cmd_timed_out(struct scsi_cmnd *sc)
 				     task->last_xfer, running_task->last_xfer,
 				     task->last_timeout);
 			spin_unlock(&session->back_lock);
-			rc = BLK_EH_RESET_TIMER;
+			rc = SCSI_EH_RESET_TIMER;
 			goto done;
 		}
 	}
@@ -2216,14 +2216,14 @@ enum blk_eh_timer_return iscsi_eh_cmd_timed_out(struct scsi_cmnd *sc)
 	 */
 	if (READ_ONCE(conn->ping_task)) {
 		task->have_checked_conn = true;
-		rc = BLK_EH_RESET_TIMER;
+		rc = SCSI_EH_RESET_TIMER;
 		goto done;
 	}
 
 	/* Make sure there is a transport check done */
 	iscsi_send_nopout(conn, NULL);
 	task->have_checked_conn = true;
-	rc = BLK_EH_RESET_TIMER;
+	rc = SCSI_EH_RESET_TIMER;
 
 done:
 	spin_unlock_bh(&session->frwd_lock);
@@ -2232,7 +2232,7 @@ done:
 		task->last_timeout = jiffies;
 		iscsi_put_task(task);
 	}
-	ISCSI_DBG_EH(session, "return %s\n", rc == BLK_EH_RESET_TIMER ?
+	ISCSI_DBG_EH(session, "return %s\n", rc == SCSI_EH_RESET_TIMER ?
 		     "timer reset" : "shutdown or nh");
 	return rc;
 }
diff --git a/drivers/scsi/libsas/sas_ata.c b/drivers/scsi/libsas/sas_ata.c
index 5692577f82e3..1ccce706167a 100644
--- a/drivers/scsi/libsas/sas_ata.c
+++ b/drivers/scsi/libsas/sas_ata.c
@@ -139,8 +139,8 @@ static void sas_ata_task_done(struct sas_task *task)
 				qc->flags |= ATA_QCFLAG_FAILED;
 			}
 
-			dev->sata_dev.fis[3] = 0x04; /* status err */
-			dev->sata_dev.fis[2] = ATA_ERR;
+			dev->sata_dev.fis[2] = ATA_ERR | ATA_DRDY; /* tf status */
+			dev->sata_dev.fis[3] = ATA_ABORTED; /* tf error */
 		}
 	}
 
@@ -287,6 +287,31 @@ static int sas_ata_clear_pending(struct domain_device *dev, struct ex_phy *phy)
 		return 1;
 }
 
+int smp_ata_check_ready_type(struct ata_link *link)
+{
+	struct domain_device *dev = link->ap->private_data;
+	struct sas_phy *phy = sas_get_local_phy(dev);
+	struct domain_device *ex_dev = dev->parent;
+	enum sas_device_type type = SAS_PHY_UNUSED;
+	u8 sas_addr[SAS_ADDR_SIZE];
+	int res;
+
+	res = sas_get_phy_attached_dev(ex_dev, phy->number, sas_addr, &type);
+	sas_put_local_phy(phy);
+	if (res)
+		return res;
+
+	switch (type) {
+	case SAS_SATA_PENDING:
+		return 0;
+	case SAS_END_DEVICE:
+		return 1;
+	default:
+		return -ENODEV;
+	}
+}
+EXPORT_SYMBOL_GPL(smp_ata_check_ready_type);
+
 static int smp_ata_check_ready(struct ata_link *link)
 {
 	int res;
@@ -358,7 +383,7 @@ static int sas_ata_printk(const char *level, const struct domain_device *ddev,
 	return r;
 }
 
-int sas_ata_wait_after_reset(struct domain_device *dev, unsigned long deadline)
+static int sas_ata_wait_after_reset(struct domain_device *dev, unsigned long deadline)
 {
 	struct sata_device *sata_dev = &dev->sata_dev;
 	int (*check_ready)(struct ata_link *link);
@@ -380,7 +405,6 @@ int sas_ata_wait_after_reset(struct domain_device *dev, unsigned long deadline)
 
 	return ret;
 }
-EXPORT_SYMBOL_GPL(sas_ata_wait_after_reset);
 
 static int sas_ata_hard_reset(struct ata_link *link, unsigned int *class,
 			      unsigned long deadline)
@@ -861,6 +885,21 @@ void sas_ata_wait_eh(struct domain_device *dev)
 	ata_port_wait_eh(ap);
 }
 
+void sas_ata_device_link_abort(struct domain_device *device, bool force_reset)
+{
+	struct ata_port *ap = device->sata_dev.ap;
+	struct ata_link *link = &ap->link;
+
+	device->sata_dev.fis[2] = ATA_ERR | ATA_DRDY; /* tf status */
+	device->sata_dev.fis[3] = ATA_ABORTED; /* tf error */
+
+	link->eh_info.err_mask |= AC_ERR_DEV;
+	if (force_reset)
+		link->eh_info.action |= ATA_EH_RESET;
+	ata_link_abort(link);
+}
+EXPORT_SYMBOL_GPL(sas_ata_device_link_abort);
+
 int sas_execute_ata_cmd(struct domain_device *device, u8 *fis, int force_phy_id)
 {
 	struct sas_tmf_task tmf_task = {};
diff --git a/drivers/scsi/libsas/sas_expander.c b/drivers/scsi/libsas/sas_expander.c
index 5ce251830104..a04cad620e93 100644
--- a/drivers/scsi/libsas/sas_expander.c
+++ b/drivers/scsi/libsas/sas_expander.c
@@ -738,9 +738,7 @@ static void sas_ex_get_linkrate(struct domain_device *parent,
 		    phy->phy_state == PHY_NOT_PRESENT)
 			continue;
 
-		if (SAS_ADDR(phy->attached_sas_addr) ==
-		    SAS_ADDR(child->sas_addr)) {
-
+		if (sas_phy_match_dev_addr(child, phy)) {
 			child->min_linkrate = min(parent->min_linkrate,
 						  phy->linkrate);
 			child->max_linkrate = max(parent->max_linkrate,
@@ -1007,13 +1005,11 @@ static int sas_ex_discover_dev(struct domain_device *dev, int phy_id)
 	}
 
 	/* Parent and domain coherency */
-	if (!dev->parent && (SAS_ADDR(ex_phy->attached_sas_addr) ==
-			     SAS_ADDR(dev->port->sas_addr))) {
+	if (!dev->parent && sas_phy_match_port_addr(dev->port, ex_phy)) {
 		sas_add_parent_port(dev, phy_id);
 		return 0;
 	}
-	if (dev->parent && (SAS_ADDR(ex_phy->attached_sas_addr) ==
-			    SAS_ADDR(dev->parent->sas_addr))) {
+	if (dev->parent && sas_phy_match_dev_addr(dev->parent, ex_phy)) {
 		sas_add_parent_port(dev, phy_id);
 		if (ex_phy->routing_attr == TABLE_ROUTING)
 			sas_configure_phy(dev, phy_id, dev->port->sas_addr, 1);
@@ -1312,7 +1308,7 @@ static int sas_check_parent_topology(struct domain_device *child)
 		    parent_phy->phy_state == PHY_NOT_PRESENT)
 			continue;
 
-		if (SAS_ADDR(parent_phy->attached_sas_addr) != SAS_ADDR(child->sas_addr))
+		if (!sas_phy_match_dev_addr(child, parent_phy))
 			continue;
 
 		child_phy = &child_ex->ex_phy[parent_phy->attached_phy_id];
@@ -1522,8 +1518,7 @@ static int sas_configure_parent(struct domain_device *parent,
 		struct ex_phy *phy = &ex_parent->ex_phy[i];
 
 		if ((phy->routing_attr == TABLE_ROUTING) &&
-		    (SAS_ADDR(phy->attached_sas_addr) ==
-		     SAS_ADDR(child->sas_addr))) {
+		    sas_phy_match_dev_addr(child, phy)) {
 			res = sas_configure_phy(parent, i, sas_addr, include);
 			if (res)
 				return res;
@@ -1693,8 +1688,8 @@ static int sas_get_phy_change_count(struct domain_device *dev,
 	return res;
 }
 
-static int sas_get_phy_attached_dev(struct domain_device *dev, int phy_id,
-				    u8 *sas_addr, enum sas_device_type *type)
+int sas_get_phy_attached_dev(struct domain_device *dev, int phy_id,
+			     u8 *sas_addr, enum sas_device_type *type)
 {
 	int res;
 	struct smp_disc_resp *disc_resp;
@@ -1858,8 +1853,7 @@ static void sas_unregister_devs_sas_addr(struct domain_device *parent,
 	if (last) {
 		list_for_each_entry_safe(child, n,
 			&ex_dev->children, siblings) {
-			if (SAS_ADDR(child->sas_addr) ==
-			    SAS_ADDR(phy->attached_sas_addr)) {
+			if (sas_phy_match_dev_addr(child, phy)) {
 				set_bit(SAS_DEV_GONE, &child->state);
 				if (dev_is_expander(child->dev_type))
 					sas_unregister_ex_tree(parent->port, child);
@@ -1941,8 +1935,7 @@ static int sas_discover_new(struct domain_device *dev, int phy_id)
 	if (res)
 		return res;
 	list_for_each_entry(child, &dev->ex_dev.children, siblings) {
-		if (SAS_ADDR(child->sas_addr) ==
-		    SAS_ADDR(ex_phy->attached_sas_addr)) {
+		if (sas_phy_match_dev_addr(child, ex_phy)) {
 			if (dev_is_expander(child->dev_type))
 				res = sas_discover_bfs_by_root(child);
 			break;
@@ -2064,8 +2057,7 @@ static int sas_rediscover(struct domain_device *dev, const int phy_id)
 
 			if (i == phy_id)
 				continue;
-			if (SAS_ADDR(phy->attached_sas_addr) ==
-			    SAS_ADDR(changed_phy->attached_sas_addr)) {
+			if (sas_phy_addr_match(phy, changed_phy)) {
 				last = false;
 				break;
 			}
@@ -2107,6 +2099,22 @@ int sas_ex_revalidate_domain(struct domain_device *port_dev)
 	return res;
 }
 
+int sas_find_attached_phy_id(struct expander_device *ex_dev,
+			     struct domain_device *dev)
+{
+	struct ex_phy *phy;
+	int phy_id;
+
+	for (phy_id = 0; phy_id < ex_dev->num_phys; phy_id++) {
+		phy = &ex_dev->ex_phy[phy_id];
+		if (sas_phy_match_dev_addr(dev, phy))
+			return phy_id;
+	}
+
+	return -ENODEV;
+}
+EXPORT_SYMBOL_GPL(sas_find_attached_phy_id);
+
 void sas_smp_handler(struct bsg_job *job, struct Scsi_Host *shost,
 		struct sas_rphy *rphy)
 {
diff --git a/drivers/scsi/libsas/sas_init.c b/drivers/scsi/libsas/sas_init.c
index e4f77072a58d..f2c05ebeb72f 100644
--- a/drivers/scsi/libsas/sas_init.c
+++ b/drivers/scsi/libsas/sas_init.c
@@ -35,7 +35,6 @@ struct sas_task *sas_alloc_task(gfp_t flags)
 
 	return task;
 }
-EXPORT_SYMBOL_GPL(sas_alloc_task);
 
 struct sas_task *sas_alloc_slow_task(gfp_t flags)
 {
@@ -56,7 +55,6 @@ struct sas_task *sas_alloc_slow_task(gfp_t flags)
 
 	return task;
 }
-EXPORT_SYMBOL_GPL(sas_alloc_slow_task);
 
 void sas_free_task(struct sas_task *task)
 {
@@ -65,7 +63,6 @@ void sas_free_task(struct sas_task *task)
 		kmem_cache_free(sas_task_cache, task);
 	}
 }
-EXPORT_SYMBOL_GPL(sas_free_task);
 
 /*------------ SAS addr hash -----------*/
 void sas_hash_addr(u8 *hashed, const u8 *sas_addr)
diff --git a/drivers/scsi/libsas/sas_internal.h b/drivers/scsi/libsas/sas_internal.h
index 8d0ad3abc7b5..6f593fa69b58 100644
--- a/drivers/scsi/libsas/sas_internal.h
+++ b/drivers/scsi/libsas/sas_internal.h
@@ -52,6 +52,10 @@ void sas_unregister_phys(struct sas_ha_struct *sas_ha);
 struct asd_sas_event *sas_alloc_event(struct asd_sas_phy *phy, gfp_t gfp_flags);
 void sas_free_event(struct asd_sas_event *event);
 
+struct sas_task *sas_alloc_task(gfp_t flags);
+struct sas_task *sas_alloc_slow_task(gfp_t flags);
+void sas_free_task(struct sas_task *task);
+
 int  sas_register_ports(struct sas_ha_struct *sas_ha);
 void sas_unregister_ports(struct sas_ha_struct *sas_ha);
 
@@ -84,6 +88,8 @@ struct domain_device *sas_ex_to_ata(struct domain_device *ex_dev, int phy_id);
 int sas_ex_phy_discover(struct domain_device *dev, int single);
 int sas_get_report_phy_sata(struct domain_device *dev, int phy_id,
 			    struct smp_rps_resp *rps_resp);
+int sas_get_phy_attached_dev(struct domain_device *dev, int phy_id,
+			     u8 *sas_addr, enum sas_device_type *type);
 int sas_try_ata_reset(struct asd_sas_phy *phy);
 void sas_hae_reset(struct work_struct *work);
 
@@ -111,6 +117,23 @@ static inline void sas_smp_host_handler(struct bsg_job *job,
 }
 #endif
 
+static inline bool sas_phy_match_dev_addr(struct domain_device *dev,
+					 struct ex_phy *phy)
+{
+	return SAS_ADDR(dev->sas_addr) == SAS_ADDR(phy->attached_sas_addr);
+}
+
+static inline bool sas_phy_match_port_addr(struct asd_sas_port *port,
+					   struct ex_phy *phy)
+{
+	return SAS_ADDR(port->sas_addr) == SAS_ADDR(phy->attached_sas_addr);
+}
+
+static inline bool sas_phy_addr_match(struct ex_phy *p1, struct ex_phy *p2)
+{
+	return  SAS_ADDR(p1->attached_sas_addr) == SAS_ADDR(p2->attached_sas_addr);
+}
+
 static inline void sas_fail_probe(struct domain_device *dev, const char *func, int err)
 {
 	pr_warn("%s: for %s device %016llx returned %d\n",
diff --git a/drivers/scsi/lpfc/lpfc_attr.c b/drivers/scsi/lpfc/lpfc_attr.c
index ef1481326fd7..77e1b2911cb4 100644
--- a/drivers/scsi/lpfc/lpfc_attr.c
+++ b/drivers/scsi/lpfc/lpfc_attr.c
@@ -134,7 +134,7 @@ lpfc_cmf_info_show(struct device *dev, struct device_attribute *attr,
 	scnprintf(tmp, sizeof(tmp),
 		  "Congestion Mgmt Info: E2Eattr %d Ver %d "
 		  "CMF %d cnt %d\n",
-		  phba->sli4_hba.pc_sli4_params.mi_ver,
+		  phba->sli4_hba.pc_sli4_params.mi_cap,
 		  cp ? cp->cgn_info_version : 0,
 		  phba->sli4_hba.pc_sli4_params.cmf, phba->cmf_timer_cnt);
 
@@ -1877,6 +1877,122 @@ lpfc_set_trunking(struct lpfc_hba *phba, char *buff_out)
 	return 0;
 }
 
+static ssize_t
+lpfc_xcvr_data_show(struct device *dev, struct device_attribute *attr,
+		    char *buf)
+{
+	struct Scsi_Host  *shost = class_to_shost(dev);
+	struct lpfc_vport *vport = (struct lpfc_vport *)shost->hostdata;
+	struct lpfc_hba   *phba = vport->phba;
+	int rc;
+	int len = 0;
+	struct lpfc_rdp_context	*rdp_context;
+	u16 temperature;
+	u16 rx_power;
+	u16 tx_bias;
+	u16 tx_power;
+	u16 vcc;
+	char chbuf[128];
+	u16 wavelength = 0;
+	struct sff_trasnceiver_codes_byte7 *trasn_code_byte7;
+
+	/* Get transceiver information */
+	rdp_context = kmalloc(sizeof(*rdp_context), GFP_KERNEL);
+
+	rc = lpfc_get_sfp_info_wait(phba, rdp_context);
+	if (rc) {
+		len = scnprintf(buf, PAGE_SIZE - len, "SFP info NA:\n");
+		goto out_free_rdp;
+	}
+
+	strncpy(chbuf, &rdp_context->page_a0[SSF_VENDOR_NAME], 16);
+	chbuf[16] = 0;
+
+	len = scnprintf(buf, PAGE_SIZE - len, "VendorName:\t%s\n", chbuf);
+	len += scnprintf(buf + len, PAGE_SIZE - len,
+			 "VendorOUI:\t%02x-%02x-%02x\n",
+			 (uint8_t)rdp_context->page_a0[SSF_VENDOR_OUI],
+			 (uint8_t)rdp_context->page_a0[SSF_VENDOR_OUI + 1],
+			 (uint8_t)rdp_context->page_a0[SSF_VENDOR_OUI + 2]);
+	strncpy(chbuf, &rdp_context->page_a0[SSF_VENDOR_PN], 16);
+	chbuf[16] = 0;
+	len += scnprintf(buf + len, PAGE_SIZE - len, "VendorPN:\t%s\n", chbuf);
+	strncpy(chbuf, &rdp_context->page_a0[SSF_VENDOR_SN], 16);
+	chbuf[16] = 0;
+	len += scnprintf(buf + len, PAGE_SIZE - len, "VendorSN:\t%s\n", chbuf);
+	strncpy(chbuf, &rdp_context->page_a0[SSF_VENDOR_REV], 4);
+	chbuf[4] = 0;
+	len += scnprintf(buf + len, PAGE_SIZE - len, "VendorRev:\t%s\n", chbuf);
+	strncpy(chbuf, &rdp_context->page_a0[SSF_DATE_CODE], 8);
+	chbuf[8] = 0;
+	len += scnprintf(buf + len, PAGE_SIZE - len, "DateCode:\t%s\n", chbuf);
+	len += scnprintf(buf + len, PAGE_SIZE - len, "Identifier:\t%xh\n",
+			 (uint8_t)rdp_context->page_a0[SSF_IDENTIFIER]);
+	len += scnprintf(buf + len, PAGE_SIZE - len, "ExtIdentifier:\t%xh\n",
+			 (uint8_t)rdp_context->page_a0[SSF_EXT_IDENTIFIER]);
+	len += scnprintf(buf + len, PAGE_SIZE - len, "Connector:\t%xh\n",
+			 (uint8_t)rdp_context->page_a0[SSF_CONNECTOR]);
+	wavelength = (rdp_context->page_a0[SSF_WAVELENGTH_B1] << 8) |
+		      rdp_context->page_a0[SSF_WAVELENGTH_B0];
+
+	len += scnprintf(buf + len, PAGE_SIZE - len, "Wavelength:\t%d nm\n",
+			 wavelength);
+	trasn_code_byte7 = (struct sff_trasnceiver_codes_byte7 *)
+			&rdp_context->page_a0[SSF_TRANSCEIVER_CODE_B7];
+
+	len += scnprintf(buf + len, PAGE_SIZE - len, "Speeds: \t");
+		if (*(uint8_t *)trasn_code_byte7 == 0) {
+			len += scnprintf(buf + len, PAGE_SIZE - len,
+					 "Unknown\n");
+		} else {
+			if (trasn_code_byte7->fc_sp_100MB)
+				len += scnprintf(buf + len, PAGE_SIZE - len,
+						 "1 ");
+			if (trasn_code_byte7->fc_sp_200mb)
+				len += scnprintf(buf + len, PAGE_SIZE - len,
+						 "2 ");
+			if (trasn_code_byte7->fc_sp_400MB)
+				len += scnprintf(buf + len, PAGE_SIZE - len,
+						 "4 ");
+			if (trasn_code_byte7->fc_sp_800MB)
+				len += scnprintf(buf + len, PAGE_SIZE - len,
+						 "8 ");
+			if (trasn_code_byte7->fc_sp_1600MB)
+				len += scnprintf(buf + len, PAGE_SIZE - len,
+						 "16 ");
+			if (trasn_code_byte7->fc_sp_3200MB)
+				len += scnprintf(buf + len, PAGE_SIZE - len,
+						 "32 ");
+			if (trasn_code_byte7->speed_chk_ecc)
+				len += scnprintf(buf + len, PAGE_SIZE - len,
+						 "64 ");
+			len += scnprintf(buf + len, PAGE_SIZE - len, "GB\n");
+		}
+	temperature = (rdp_context->page_a2[SFF_TEMPERATURE_B1] << 8 |
+		       rdp_context->page_a2[SFF_TEMPERATURE_B0]);
+	vcc = (rdp_context->page_a2[SFF_VCC_B1] << 8 |
+	       rdp_context->page_a2[SFF_VCC_B0]);
+	tx_power = (rdp_context->page_a2[SFF_TXPOWER_B1] << 8 |
+		    rdp_context->page_a2[SFF_TXPOWER_B0]);
+	tx_bias = (rdp_context->page_a2[SFF_TX_BIAS_CURRENT_B1] << 8 |
+		   rdp_context->page_a2[SFF_TX_BIAS_CURRENT_B0]);
+	rx_power = (rdp_context->page_a2[SFF_RXPOWER_B1] << 8 |
+		    rdp_context->page_a2[SFF_RXPOWER_B0]);
+
+	len += scnprintf(buf + len, PAGE_SIZE - len,
+			 "Temperature:\tx%04x C\n", temperature);
+	len += scnprintf(buf + len, PAGE_SIZE - len, "Vcc:\t\tx%04x V\n", vcc);
+	len += scnprintf(buf + len, PAGE_SIZE - len,
+			 "TxBiasCurrent:\tx%04x mA\n", tx_bias);
+	len += scnprintf(buf + len, PAGE_SIZE - len, "TxPower:\tx%04x mW\n",
+			 tx_power);
+	len += scnprintf(buf + len, PAGE_SIZE - len, "RxPower:\tx%04x mW\n",
+			 rx_power);
+out_free_rdp:
+	kfree(rdp_context);
+	return len;
+}
+
 /**
  * lpfc_board_mode_show - Return the state of the board
  * @dev: class device that is converted into a Scsi_host.
@@ -2810,6 +2926,7 @@ static DEVICE_ATTR_RO(lpfc_drvr_version);
 static DEVICE_ATTR_RO(lpfc_enable_fip);
 static DEVICE_ATTR(board_mode, S_IRUGO | S_IWUSR,
 		   lpfc_board_mode_show, lpfc_board_mode_store);
+static DEVICE_ATTR_RO(lpfc_xcvr_data);
 static DEVICE_ATTR(issue_reset, S_IWUSR, NULL, lpfc_issue_reset);
 static DEVICE_ATTR(max_vpi, S_IRUGO, lpfc_max_vpi_show, NULL);
 static DEVICE_ATTR(used_vpi, S_IRUGO, lpfc_used_vpi_show, NULL);
@@ -5906,6 +6023,7 @@ static struct attribute *lpfc_hba_attrs[] = {
 	&dev_attr_lpfc_fcp_wait_abts_rsp.attr,
 	&dev_attr_nport_evt_cnt.attr,
 	&dev_attr_board_mode.attr,
+	&dev_attr_lpfc_xcvr_data.attr,
 	&dev_attr_max_vpi.attr,
 	&dev_attr_used_vpi.attr,
 	&dev_attr_max_rpi.attr,
diff --git a/drivers/scsi/lpfc/lpfc_crtn.h b/drivers/scsi/lpfc/lpfc_crtn.h
index d2d207791056..8928f016d09e 100644
--- a/drivers/scsi/lpfc/lpfc_crtn.h
+++ b/drivers/scsi/lpfc/lpfc_crtn.h
@@ -687,3 +687,6 @@ int lpfc_issue_els_qfpa(struct lpfc_vport *vport);
 
 void lpfc_sli_rpi_release(struct lpfc_vport *vport,
 			  struct lpfc_nodelist *ndlp);
+
+int lpfc_get_sfp_info_wait(struct lpfc_hba *phba,
+			   struct lpfc_rdp_context *rdp_context);
diff --git a/drivers/scsi/lpfc/lpfc_els.c b/drivers/scsi/lpfc/lpfc_els.c
index 863b2125fed6..919741bbe267 100644
--- a/drivers/scsi/lpfc/lpfc_els.c
+++ b/drivers/scsi/lpfc/lpfc_els.c
@@ -952,6 +952,7 @@ lpfc_cmpl_els_flogi(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
 	uint16_t fcf_index;
 	int rc;
 	u32 ulp_status, ulp_word4, tmo;
+	bool flogi_in_retry = false;
 
 	/* Check to see if link went down during discovery */
 	if (lpfc_els_chk_latt(vport)) {
@@ -1022,8 +1023,23 @@ stop_rr_fcf_flogi:
 					 phba->hba_flag, phba->fcf.fcf_flag);
 
 		/* Check for retry */
-		if (lpfc_els_retry(phba, cmdiocb, rspiocb))
+		if (lpfc_els_retry(phba, cmdiocb, rspiocb)) {
+			/* Address a timing race with dev_loss.  If dev_loss
+			 * is active on this FPort node, put the initial ref
+			 * count back to stop premature node release actions.
+			 */
+			lpfc_check_nlp_post_devloss(vport, ndlp);
+			flogi_in_retry = true;
 			goto out;
+		}
+
+		/* The FLOGI will not be retried.  If the FPort node is not
+		 * registered with the SCSI transport, remove the initial
+		 * reference to trigger node release.
+		 */
+		if (!(ndlp->nlp_flag & NLP_IN_DEV_LOSS) &&
+		    !(ndlp->fc4_xpt_flags & SCSI_XPT_REGD))
+			lpfc_nlp_put(ndlp);
 
 		lpfc_printf_vlog(vport, KERN_WARNING, LOG_TRACE_EVENT,
 				 "0150 FLOGI failure Status:x%x/x%x "
@@ -1086,7 +1102,7 @@ stop_rr_fcf_flogi:
 	spin_unlock_irq(shost->host_lock);
 
 	/*
-	 * The FLogI succeeded.  Sync the data for the CPU before
+	 * The FLOGI succeeded.  Sync the data for the CPU before
 	 * accessing it.
 	 */
 	prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf, list);
@@ -1108,6 +1124,12 @@ stop_rr_fcf_flogi:
 		vport->phba->pport->vmid_flag |= (LPFC_VMID_ISSUE_QFPA |
 						  LPFC_VMID_TYPE_PRIO);
 
+	/*
+	 * Address a timing race with dev_loss.  If dev_loss is active on
+	 * this FPort node, put the initial ref count back to stop premature
+	 * node release actions.
+	 */
+	lpfc_check_nlp_post_devloss(vport, ndlp);
 	if (vport->port_state == LPFC_FLOGI) {
 		/*
 		 * If Common Service Parameters indicate Nport
@@ -1198,7 +1220,9 @@ flogifail:
 		lpfc_issue_clear_la(phba, vport);
 	}
 out:
-	phba->hba_flag &= ~HBA_FLOGI_OUTSTANDING;
+	if (!flogi_in_retry)
+		phba->hba_flag &= ~HBA_FLOGI_OUTSTANDING;
+
 	lpfc_els_free_iocb(phba, cmdiocb);
 	lpfc_nlp_put(ndlp);
 }
@@ -1365,15 +1389,17 @@ lpfc_issue_els_flogi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 		return 1;
 	}
 
+	/* Avoid race with FLOGI completion and hba_flags. */
+	phba->hba_flag |= (HBA_FLOGI_ISSUED | HBA_FLOGI_OUTSTANDING);
+
 	rc = lpfc_issue_fabric_iocb(phba, elsiocb);
 	if (rc == IOCB_ERROR) {
+		phba->hba_flag &= ~(HBA_FLOGI_ISSUED | HBA_FLOGI_OUTSTANDING);
 		lpfc_els_free_iocb(phba, elsiocb);
 		lpfc_nlp_put(ndlp);
 		return 1;
 	}
 
-	phba->hba_flag |= (HBA_FLOGI_ISSUED | HBA_FLOGI_OUTSTANDING);
-
 	/* Clear external loopback plug detected flag */
 	phba->link_flag &= ~LS_EXTERNAL_LOOPBACK;
 
@@ -7190,6 +7216,134 @@ rdp_fail:
 	return 1;
 }
 
+int lpfc_get_sfp_info_wait(struct lpfc_hba *phba,
+			   struct lpfc_rdp_context *rdp_context)
+{
+	LPFC_MBOXQ_t *mbox = NULL;
+	int rc;
+	struct lpfc_dmabuf *mp;
+	struct lpfc_dmabuf *mpsave;
+	void *virt;
+	MAILBOX_t *mb;
+
+	mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
+	if (!mbox) {
+		lpfc_printf_log(phba, KERN_WARNING, LOG_MBOX | LOG_ELS,
+				"7205 failed to allocate mailbox memory");
+		return 1;
+	}
+
+	if (lpfc_sli4_dump_page_a0(phba, mbox))
+		goto sfp_fail;
+	mp = mbox->ctx_buf;
+	mpsave = mp;
+	virt = mp->virt;
+	if (phba->sli_rev < LPFC_SLI_REV4) {
+		mb = &mbox->u.mb;
+		mb->un.varDmp.cv = 1;
+		mb->un.varDmp.co = 1;
+		mb->un.varWords[2] = 0;
+		mb->un.varWords[3] = DMP_SFF_PAGE_A0_SIZE / 4;
+		mb->un.varWords[4] = 0;
+		mb->un.varWords[5] = 0;
+		mb->un.varWords[6] = 0;
+		mb->un.varWords[7] = 0;
+		mb->un.varWords[8] = 0;
+		mb->un.varWords[9] = 0;
+		mb->un.varWords[10] = 0;
+		mbox->in_ext_byte_len = DMP_SFF_PAGE_A0_SIZE;
+		mbox->out_ext_byte_len = DMP_SFF_PAGE_A0_SIZE;
+		mbox->mbox_offset_word = 5;
+		mbox->ctx_buf = virt;
+	} else {
+		bf_set(lpfc_mbx_memory_dump_type3_length,
+		       &mbox->u.mqe.un.mem_dump_type3, DMP_SFF_PAGE_A0_SIZE);
+		mbox->u.mqe.un.mem_dump_type3.addr_lo = putPaddrLow(mp->phys);
+		mbox->u.mqe.un.mem_dump_type3.addr_hi = putPaddrHigh(mp->phys);
+	}
+	mbox->vport = phba->pport;
+	mbox->ctx_ndlp = (struct lpfc_rdp_context *)rdp_context;
+
+	rc = lpfc_sli_issue_mbox_wait(phba, mbox, 30);
+	if (rc == MBX_NOT_FINISHED) {
+		rc = 1;
+		goto error;
+	}
+
+	if (phba->sli_rev == LPFC_SLI_REV4)
+		mp = (struct lpfc_dmabuf *)(mbox->ctx_buf);
+	else
+		mp = mpsave;
+
+	if (bf_get(lpfc_mqe_status, &mbox->u.mqe)) {
+		rc = 1;
+		goto error;
+	}
+
+	lpfc_sli_bemem_bcopy(mp->virt, &rdp_context->page_a0,
+			     DMP_SFF_PAGE_A0_SIZE);
+
+	memset(mbox, 0, sizeof(*mbox));
+	memset(mp->virt, 0, DMP_SFF_PAGE_A2_SIZE);
+	INIT_LIST_HEAD(&mp->list);
+
+	/* save address for completion */
+	mbox->ctx_buf = mp;
+	mbox->vport = phba->pport;
+
+	bf_set(lpfc_mqe_command, &mbox->u.mqe, MBX_DUMP_MEMORY);
+	bf_set(lpfc_mbx_memory_dump_type3_type,
+	       &mbox->u.mqe.un.mem_dump_type3, DMP_LMSD);
+	bf_set(lpfc_mbx_memory_dump_type3_link,
+	       &mbox->u.mqe.un.mem_dump_type3, phba->sli4_hba.physical_port);
+	bf_set(lpfc_mbx_memory_dump_type3_page_no,
+	       &mbox->u.mqe.un.mem_dump_type3, DMP_PAGE_A2);
+	if (phba->sli_rev < LPFC_SLI_REV4) {
+		mb = &mbox->u.mb;
+		mb->un.varDmp.cv = 1;
+		mb->un.varDmp.co = 1;
+		mb->un.varWords[2] = 0;
+		mb->un.varWords[3] = DMP_SFF_PAGE_A2_SIZE / 4;
+		mb->un.varWords[4] = 0;
+		mb->un.varWords[5] = 0;
+		mb->un.varWords[6] = 0;
+		mb->un.varWords[7] = 0;
+		mb->un.varWords[8] = 0;
+		mb->un.varWords[9] = 0;
+		mb->un.varWords[10] = 0;
+		mbox->in_ext_byte_len = DMP_SFF_PAGE_A2_SIZE;
+		mbox->out_ext_byte_len = DMP_SFF_PAGE_A2_SIZE;
+		mbox->mbox_offset_word = 5;
+		mbox->ctx_buf = virt;
+	} else {
+		bf_set(lpfc_mbx_memory_dump_type3_length,
+		       &mbox->u.mqe.un.mem_dump_type3, DMP_SFF_PAGE_A2_SIZE);
+		mbox->u.mqe.un.mem_dump_type3.addr_lo = putPaddrLow(mp->phys);
+		mbox->u.mqe.un.mem_dump_type3.addr_hi = putPaddrHigh(mp->phys);
+	}
+
+	mbox->ctx_ndlp = (struct lpfc_rdp_context *)rdp_context;
+	rc = lpfc_sli_issue_mbox_wait(phba, mbox, 30);
+	if (bf_get(lpfc_mqe_status, &mbox->u.mqe)) {
+		rc = 1;
+		goto error;
+	}
+	rc = 0;
+
+	lpfc_sli_bemem_bcopy(mp->virt, &rdp_context->page_a2,
+			     DMP_SFF_PAGE_A2_SIZE);
+
+error:
+	mbox->ctx_buf = mpsave;
+	lpfc_mbox_rsrc_cleanup(phba, mbox, MBOX_THD_UNLOCKED);
+
+	return rc;
+
+sfp_fail:
+	mempool_free(mbox, phba->mbox_mem_pool);
+	return 1;
+}
+
 /*
  * lpfc_els_rcv_rdp - Process an unsolicited RDP ELS.
  * @vport: pointer to a host virtual N_Port data structure.
@@ -9044,15 +9198,10 @@ static int
 lpfc_els_rcv_farpr(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
 		   struct lpfc_nodelist  *ndlp)
 {
-	struct lpfc_dmabuf *pcmd;
-	uint32_t *lp;
 	uint32_t did;
 
 	did = get_job_els_rsp64_did(vport->phba, cmdiocb);
-	pcmd = cmdiocb->cmd_dmabuf;
-	lp = (uint32_t *)pcmd->virt;
 
-	lp++;
 	/* FARP-RSP received from DID <did> */
 	lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
 			 "0600 FARP-RSP received from DID x%x\n", did);
diff --git a/drivers/scsi/lpfc/lpfc_hbadisc.c b/drivers/scsi/lpfc/lpfc_hbadisc.c
index d38ebd7281b9..80375d73b732 100644
--- a/drivers/scsi/lpfc/lpfc_hbadisc.c
+++ b/drivers/scsi/lpfc/lpfc_hbadisc.c
@@ -426,10 +426,6 @@ lpfc_dev_loss_tmo_handler(struct lpfc_nodelist *ndlp)
 	name = (uint8_t *)&ndlp->nlp_portname;
 	phba = vport->phba;
 
-	spin_lock_irqsave(&ndlp->lock, iflags);
-	ndlp->nlp_flag &= ~NLP_IN_DEV_LOSS;
-	spin_unlock_irqrestore(&ndlp->lock, iflags);
-
 	if (phba->sli_rev == LPFC_SLI_REV4)
 		fcf_inuse = lpfc_fcf_inuse(phba);
 
@@ -451,22 +447,36 @@ lpfc_dev_loss_tmo_handler(struct lpfc_nodelist *ndlp)
 				 *name, *(name+1), *(name+2), *(name+3),
 				 *(name+4), *(name+5), *(name+6), *(name+7),
 				 ndlp->nlp_DID);
+
+		spin_lock_irqsave(&ndlp->lock, iflags);
+		ndlp->nlp_flag &= ~NLP_IN_DEV_LOSS;
+		spin_unlock_irqrestore(&ndlp->lock, iflags);
 		return fcf_inuse;
 	}
 
 	/* Fabric nodes are done. */
 	if (ndlp->nlp_type & NLP_FABRIC) {
 		spin_lock_irqsave(&ndlp->lock, iflags);
-		/* In massive vport configuration settings, it's possible
-		 * dev_loss_tmo fired during node recovery.  So, check if
-		 * fabric nodes are in discovery states outstanding.
+
+		/* In massive vport configuration settings or when the FLOGI
+		 * completes with a sequence timeout, it's possible
+		 * dev_loss_tmo fired during node recovery.  The driver has to
+		 * account for this race to allow for recovery and keep
+		 * the reference counting correct.
 		 */
 		switch (ndlp->nlp_DID) {
 		case Fabric_DID:
 			fc_vport = vport->fc_vport;
-			if (fc_vport &&
-			    fc_vport->vport_state == FC_VPORT_INITIALIZING)
-				recovering = true;
+			if (fc_vport) {
+				/* NPIV path. */
+				if (fc_vport->vport_state ==
+				    FC_VPORT_INITIALIZING)
+					recovering = true;
+			} else {
+				/* Physical port path. */
+				if (phba->hba_flag & HBA_FLOGI_OUTSTANDING)
+					recovering = true;
+			}
 			break;
 		case Fabric_Cntl_DID:
 			if (ndlp->nlp_flag & NLP_REG_LOGIN_SEND)
@@ -514,6 +524,9 @@ lpfc_dev_loss_tmo_handler(struct lpfc_nodelist *ndlp)
 			return fcf_inuse;
 		}
 
+		spin_lock_irqsave(&ndlp->lock, iflags);
+		ndlp->nlp_flag &= ~NLP_IN_DEV_LOSS;
+		spin_unlock_irqrestore(&ndlp->lock, iflags);
 		lpfc_nlp_put(ndlp);
 		return fcf_inuse;
 	}
@@ -552,6 +565,9 @@ lpfc_dev_loss_tmo_handler(struct lpfc_nodelist *ndlp)
 		return fcf_inuse;
 	}
 
+	spin_lock_irqsave(&ndlp->lock, iflags);
+	ndlp->nlp_flag &= ~NLP_IN_DEV_LOSS;
+	spin_unlock_irqrestore(&ndlp->lock, iflags);
 	if (!(ndlp->fc4_xpt_flags & NVME_XPT_REGD))
 		lpfc_disc_state_machine(vport, ndlp, NULL, NLP_EVT_DEVICE_RM);
 
diff --git a/drivers/scsi/lpfc/lpfc_hw4.h b/drivers/scsi/lpfc/lpfc_hw4.h
index 5288fc69908a..fb3504dbb899 100644
--- a/drivers/scsi/lpfc/lpfc_hw4.h
+++ b/drivers/scsi/lpfc/lpfc_hw4.h
@@ -3162,7 +3162,8 @@ struct lpfc_mbx_memory_dump_type3 {
 #define SFF_LENGTH_COPPER		18
 #define SSF_LENGTH_50UM_OM3		19
 #define SSF_VENDOR_NAME			20
-#define SSF_VENDOR_OUI			36
+#define SSF_TRANSCEIVER2		36
+#define SSF_VENDOR_OUI			37
 #define SSF_VENDOR_PN			40
 #define SSF_VENDOR_REV			56
 #define SSF_WAVELENGTH_B1		60
@@ -3281,7 +3282,7 @@ struct sff_trasnceiver_codes_byte6 {
 
 struct sff_trasnceiver_codes_byte7 {
 	uint8_t fc_sp_100MB:1;   /*  100 MB/sec */
-	uint8_t reserve:1;
+	uint8_t speed_chk_ecc:1;
 	uint8_t fc_sp_200mb:1;   /*  200 MB/sec */
 	uint8_t fc_sp_3200MB:1;  /* 3200 MB/sec */
 	uint8_t fc_sp_400MB:1;   /*  400 MB/sec */
diff --git a/drivers/scsi/lpfc/lpfc_init.c b/drivers/scsi/lpfc/lpfc_init.c
index b535f1fd3010..25ba20e42825 100644
--- a/drivers/scsi/lpfc/lpfc_init.c
+++ b/drivers/scsi/lpfc/lpfc_init.c
@@ -36,7 +36,6 @@
 #include <linux/firmware.h>
 #include <linux/miscdevice.h>
 #include <linux/percpu.h>
-#include <linux/msi.h>
 #include <linux/irq.h>
 #include <linux/bitops.h>
 #include <linux/crash_dump.h>
@@ -699,6 +698,8 @@ lpfc_sli4_refresh_params(struct lpfc_hba *phba)
 		return rc;
 	}
 	mbx_sli4_parameters = &mqe->un.get_sli4_parameters.sli4_parameters;
+	phba->sli4_hba.pc_sli4_params.mi_cap =
+		bf_get(cfg_mi_ver, mbx_sli4_parameters);
 
 	/* Are we forcing MI off via module parameter? */
 	if (phba->cfg_enable_mi)
@@ -10093,17 +10094,15 @@ lpfc_sli4_read_config(struct lpfc_hba *phba)
 		qmin = phba->sli4_hba.max_cfg_param.max_wq;
 		if (phba->sli4_hba.max_cfg_param.max_cq < qmin)
 			qmin = phba->sli4_hba.max_cfg_param.max_cq;
-		if (phba->sli4_hba.max_cfg_param.max_eq < qmin)
-			qmin = phba->sli4_hba.max_cfg_param.max_eq;
 		/*
-		 * Whats left after this can go toward NVME / FCP.
-		 * The minus 4 accounts for ELS, NVME LS, MBOX
-		 * plus one extra. When configured for
-		 * NVMET, FCP io channel WQs are not created.
+		 * Reserve 4 (ELS, NVME LS, MBOX, plus one extra) and
+		 * the remainder can be used for NVME / FCP.
 		 */
 		qmin -= 4;
+		if (phba->sli4_hba.max_cfg_param.max_eq < qmin)
+			qmin = phba->sli4_hba.max_cfg_param.max_eq;
 
-		/* Check to see if there is enough for NVME */
+		/* Check to see if there is enough for default cfg */
 		if ((phba->cfg_irq_chann > qmin) ||
 		    (phba->cfg_hdw_queue > qmin)) {
 			lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
@@ -13842,6 +13841,7 @@ lpfc_get_sli4_parameters(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
 					   mbx_sli4_parameters);
 	phba->sli4_hba.extents_in_use = bf_get(cfg_ext, mbx_sli4_parameters);
 	phba->sli4_hba.rpi_hdrs_in_use = bf_get(cfg_hdrr, mbx_sli4_parameters);
+	sli4_params->mi_cap = bf_get(cfg_mi_ver, mbx_sli4_parameters);
 
 	/* Check for Extended Pre-Registered SGL support */
 	phba->cfg_xpsgl = bf_get(cfg_xpsgl, mbx_sli4_parameters);
diff --git a/drivers/scsi/lpfc/lpfc_sli.c b/drivers/scsi/lpfc/lpfc_sli.c
index 99d06dc7ddf6..182aaae60386 100644
--- a/drivers/scsi/lpfc/lpfc_sli.c
+++ b/drivers/scsi/lpfc/lpfc_sli.c
@@ -1373,7 +1373,6 @@ static void
 __lpfc_sli_release_iocbq_s4(struct lpfc_hba *phba, struct lpfc_iocbq *iocbq)
 {
 	struct lpfc_sglq *sglq;
-	size_t start_clean = offsetof(struct lpfc_iocbq, wqe);
 	unsigned long iflag = 0;
 	struct lpfc_sli_ring *pring;
 
@@ -1430,7 +1429,7 @@ out:
 	/*
 	 * Clean all volatile data fields, preserve iotag and node struct.
 	 */
-	memset((char *)iocbq + start_clean, 0, sizeof(*iocbq) - start_clean);
+	memset_startat(iocbq, 0, wqe);
 	iocbq->sli4_lxritag = NO_XRI;
 	iocbq->sli4_xritag = NO_XRI;
 	iocbq->cmd_flag &= ~(LPFC_IO_NVME | LPFC_IO_NVMET | LPFC_IO_CMF |
@@ -1453,12 +1452,11 @@ out:
 static void
 __lpfc_sli_release_iocbq_s3(struct lpfc_hba *phba, struct lpfc_iocbq *iocbq)
 {
-	size_t start_clean = offsetof(struct lpfc_iocbq, iocb);
 
 	/*
 	 * Clean all volatile data fields, preserve iotag and node struct.
 	 */
-	memset((char*)iocbq + start_clean, 0, sizeof(*iocbq) - start_clean);
+	memset_startat(iocbq, 0, iocb);
 	iocbq->sli4_xritag = NO_XRI;
 	list_add_tail(&iocbq->list, &phba->lpfc_iocb_list);
 }
@@ -1848,6 +1846,24 @@ lpfc_cmf_sync_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
 				  phba->cmf_link_byte_count);
 		bwpcent = div64_u64(bw * 100 + slop,
 				    phba->cmf_link_byte_count);
+		/* Because of bytes adjustment due to shorter timer in
+		 * lpfc_cmf_timer() the cmf_link_byte_count can be shorter and
+		 * may seem like BW is above 100%.
+		 */
+		if (bwpcent > 100)
+			bwpcent = 100;
+
+		if (phba->cmf_max_bytes_per_interval < bw &&
+		    bwpcent > 95)
+			lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT,
+					"6208 Congestion bandwidth "
+					"limits removed\n");
+		else if ((phba->cmf_max_bytes_per_interval > bw) &&
+			 ((bwpcent + pcent) <= 100) && ((bwpcent + pcent) > 95))
+			lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT,
+					"6209 Congestion bandwidth "
+					"limits in effect\n");
+
 		if (asig) {
 			lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT,
 					"6237 BW Threshold %lld%% (%lld): "
@@ -8150,10 +8166,10 @@ u32 lpfc_rx_monitor_report(struct lpfc_hba *phba,
 					"IO_cnt", "Info", "BWutil(ms)");
 	}
 
-	/* Needs to be _bh because record is called from timer interrupt
+	/* Needs to be _irq because record is called from timer interrupt
 	 * context
 	 */
-	spin_lock_bh(ring_lock);
+	spin_lock_irq(ring_lock);
 	while (*head_idx != *tail_idx) {
 		entry = &ring[*head_idx];
 
@@ -8197,7 +8213,7 @@ u32 lpfc_rx_monitor_report(struct lpfc_hba *phba,
 		if (cnt >= max_read_entries)
 			break;
 	}
-	spin_unlock_bh(ring_lock);
+	spin_unlock_irq(ring_lock);
 
 	return cnt;
 }
@@ -8354,6 +8370,7 @@ no_cmf:
 			phba->cgn_i = NULL;
 			/* Ensure CGN Mode is off */
 			phba->cmf_active_mode = LPFC_CFG_OFF;
+			sli4_params->cmf = 0;
 			return 0;
 		}
 	}
diff --git a/drivers/scsi/lpfc/lpfc_sli4.h b/drivers/scsi/lpfc/lpfc_sli4.h
index cbb1aa1cf025..f927c2a25d54 100644
--- a/drivers/scsi/lpfc/lpfc_sli4.h
+++ b/drivers/scsi/lpfc/lpfc_sli4.h
@@ -556,6 +556,7 @@ struct lpfc_pc_sli4_params {
 #define LPFC_MIB3_SUPPORT	3
 	uint16_t mi_value;
 #define LPFC_DFLT_MIB_VAL	2
+	uint8_t mi_cap;
 	uint8_t mib_bde_cnt;
 	uint8_t cmf;
 	uint8_t cqv;
diff --git a/drivers/scsi/lpfc/lpfc_version.h b/drivers/scsi/lpfc/lpfc_version.h
index 192d5630a44d..41a1128f8651 100644
--- a/drivers/scsi/lpfc/lpfc_version.h
+++ b/drivers/scsi/lpfc/lpfc_version.h
@@ -20,7 +20,7 @@
  * included with this package.                                     *
  *******************************************************************/
 
-#define LPFC_DRIVER_VERSION "14.2.0.7"
+#define LPFC_DRIVER_VERSION "14.2.0.9"
 #define LPFC_DRIVER_NAME		"lpfc"
 
 /* Used for SLI 2/3 */
diff --git a/drivers/scsi/megaraid/megaraid_sas_base.c b/drivers/scsi/megaraid/megaraid_sas_base.c
index d265a2d9d082..3ceece988338 100644
--- a/drivers/scsi/megaraid/megaraid_sas_base.c
+++ b/drivers/scsi/megaraid/megaraid_sas_base.c
@@ -2927,15 +2927,14 @@ static int megasas_generic_reset(struct scsi_cmnd *scmd)
  * Sets the FW busy flag and reduces the host->can_queue if the
  * cmd has not been completed within the timeout period.
  */
-static enum
-blk_eh_timer_return megasas_reset_timer(struct scsi_cmnd *scmd)
+static enum scsi_timeout_action megasas_reset_timer(struct scsi_cmnd *scmd)
 {
 	struct megasas_instance *instance;
 	unsigned long flags;
 
 	if (time_after(jiffies, scmd->jiffies_at_alloc +
 				(scmd_timeout * 2) * HZ)) {
-		return BLK_EH_DONE;
+		return SCSI_EH_NOT_HANDLED;
 	}
 
 	instance = (struct megasas_instance *)scmd->device->host->hostdata;
@@ -2949,7 +2948,7 @@ blk_eh_timer_return megasas_reset_timer(struct scsi_cmnd *scmd)
 
 		spin_unlock_irqrestore(instance->host->host_lock, flags);
 	}
-	return BLK_EH_RESET_TIMER;
+	return SCSI_EH_RESET_TIMER;
 }
 
 /**
diff --git a/drivers/scsi/megaraid/megaraid_sas_fusion.c b/drivers/scsi/megaraid/megaraid_sas_fusion.c
index 6650f8c8e9b0..fe70f8f11435 100644
--- a/drivers/scsi/megaraid/megaraid_sas_fusion.c
+++ b/drivers/scsi/megaraid/megaraid_sas_fusion.c
@@ -80,7 +80,7 @@ static void megasas_fusion_crash_dump(struct megasas_instance *instance);
  * @ocr_context:			If called from OCR context this will
  *					be set to 1, else 0
  *
- * This function initates a chip reset followed by a wait for controller to
+ * This function initiates a chip reset followed by a wait for controller to
  * transition to ready state.
  * During this, driver will block all access to PCI config space from userspace
  */
@@ -334,7 +334,7 @@ megasas_fire_cmd_fusion(struct megasas_instance *instance,
  *
  * This function is only for fusion controllers.
  * Update host can queue, if firmware downgrade max supported firmware commands.
- * Firmware upgrade case will be skiped because underlying firmware has
+ * Firmware upgrade case will be skipped because underlying firmware has
  * more resource than exposed to the OS.
  *
  */
@@ -2588,7 +2588,7 @@ static void megasas_stream_detect(struct megasas_instance *instance,
 			if ((io_info->ldStartBlock != current_sd->next_seq_lba)	&&
 			    ((!io_info->isRead) || (!is_read_ahead)))
 				/*
-				 * Once the API availible we need to change this.
+				 * Once the API is available we need to change this.
 				 * At this point we are not allowing any gap
 				 */
 				continue;
@@ -4650,7 +4650,7 @@ megasas_issue_tm(struct megasas_instance *instance, u16 device_handle,
 }
 
 /*
- * megasas_fusion_smid_lookup : Look for fusion command correpspodning to SCSI
+ * megasas_fusion_smid_lookup : Look for fusion command corresponding to SCSI
  * @instance: per adapter struct
  *
  * Return Non Zero index, if SMID found in outstanding commands
diff --git a/drivers/scsi/mpt3sas/mpt3sas_transport.c b/drivers/scsi/mpt3sas/mpt3sas_transport.c
index 0681daee6c14..e5ecd6ada6cd 100644
--- a/drivers/scsi/mpt3sas/mpt3sas_transport.c
+++ b/drivers/scsi/mpt3sas/mpt3sas_transport.c
@@ -829,6 +829,8 @@ mpt3sas_transport_port_add(struct MPT3SAS_ADAPTER *ioc, u16 handle,
 	if ((sas_rphy_add(rphy))) {
 		ioc_err(ioc, "failure at %s:%d/%s()!\n",
 			__FILE__, __LINE__, __func__);
+		sas_rphy_free(rphy);
+		rphy = NULL;
 	}
 
 	if (mpt3sas_port->remote_identify.device_type == SAS_END_DEVICE) {
diff --git a/drivers/scsi/mvsas/mv_defs.h b/drivers/scsi/mvsas/mv_defs.h
index 7123a2efbf58..8ef174cd4d37 100644
--- a/drivers/scsi/mvsas/mv_defs.h
+++ b/drivers/scsi/mvsas/mv_defs.h
@@ -40,6 +40,7 @@ enum driver_configuration {
 	MVS_ATA_CMD_SZ		= 96,	/* SATA command table buffer size */
 	MVS_OAF_SZ		= 64,	/* Open address frame buffer size */
 	MVS_QUEUE_SIZE		= 64,	/* Support Queue depth */
+	MVS_RSVD_SLOTS		= 4,
 	MVS_SOC_CAN_QUEUE	= MVS_SOC_SLOTS - 2,
 };
 
diff --git a/drivers/scsi/mvsas/mv_init.c b/drivers/scsi/mvsas/mv_init.c
index 2fde496fff5f..cfe84473a515 100644
--- a/drivers/scsi/mvsas/mv_init.c
+++ b/drivers/scsi/mvsas/mv_init.c
@@ -142,7 +142,7 @@ static void mvs_free(struct mvs_info *mvi)
 		scsi_host_put(mvi->shost);
 	list_for_each_entry(mwq, &mvi->wq_list, entry)
 		cancel_delayed_work(&mwq->work_q);
-	kfree(mvi->tags);
+	kfree(mvi->rsvd_tags);
 	kfree(mvi);
 }
 
@@ -284,10 +284,7 @@ static int mvs_alloc(struct mvs_info *mvi, struct Scsi_Host *shost)
 			printk(KERN_DEBUG "failed to create dma pool %s.\n", pool_name);
 			goto err_out;
 	}
-	mvi->tags_num = slot_nr;
 
-	/* Initialize tags */
-	mvs_tag_init(mvi);
 	return 0;
 err_out:
 	return 1;
@@ -369,8 +366,8 @@ static struct mvs_info *mvs_pci_alloc(struct pci_dev *pdev,
 	mvi->sas = sha;
 	mvi->shost = shost;
 
-	mvi->tags = kzalloc(MVS_CHIP_SLOT_SZ>>3, GFP_KERNEL);
-	if (!mvi->tags)
+	mvi->rsvd_tags = bitmap_zalloc(MVS_RSVD_SLOTS, GFP_KERNEL);
+	if (!mvi->rsvd_tags)
 		goto err_out;
 
 	if (MVS_CHIP_DISP->chip_ioremap(mvi))
@@ -471,6 +468,8 @@ static void  mvs_post_sas_ha_init(struct Scsi_Host *shost,
 	else
 		can_queue = MVS_CHIP_SLOT_SZ;
 
+	can_queue -= MVS_RSVD_SLOTS;
+
 	shost->sg_tablesize = min_t(u16, SG_ALL, MVS_MAX_SG);
 	shost->can_queue = can_queue;
 	mvi->shost->cmd_per_lun = MVS_QUEUE_SIZE;
diff --git a/drivers/scsi/mvsas/mv_sas.c b/drivers/scsi/mvsas/mv_sas.c
index a6867dae0e7c..9978c424214c 100644
--- a/drivers/scsi/mvsas/mv_sas.c
+++ b/drivers/scsi/mvsas/mv_sas.c
@@ -20,44 +20,40 @@ static int mvs_find_tag(struct mvs_info *mvi, struct sas_task *task, u32 *tag)
 	return 0;
 }
 
-void mvs_tag_clear(struct mvs_info *mvi, u32 tag)
+static void mvs_tag_clear(struct mvs_info *mvi, u32 tag)
 {
-	void *bitmap = mvi->tags;
+	void *bitmap = mvi->rsvd_tags;
 	clear_bit(tag, bitmap);
 }
 
-void mvs_tag_free(struct mvs_info *mvi, u32 tag)
+static void mvs_tag_free(struct mvs_info *mvi, u32 tag)
 {
+	if (tag >= MVS_RSVD_SLOTS)
+		return;
+
 	mvs_tag_clear(mvi, tag);
 }
 
-void mvs_tag_set(struct mvs_info *mvi, unsigned int tag)
+static void mvs_tag_set(struct mvs_info *mvi, unsigned int tag)
 {
-	void *bitmap = mvi->tags;
+	void *bitmap = mvi->rsvd_tags;
 	set_bit(tag, bitmap);
 }
 
-inline int mvs_tag_alloc(struct mvs_info *mvi, u32 *tag_out)
+static int mvs_tag_alloc(struct mvs_info *mvi, u32 *tag_out)
 {
 	unsigned int index, tag;
-	void *bitmap = mvi->tags;
+	void *bitmap = mvi->rsvd_tags;
 
-	index = find_first_zero_bit(bitmap, mvi->tags_num);
+	index = find_first_zero_bit(bitmap, MVS_RSVD_SLOTS);
 	tag = index;
-	if (tag >= mvi->tags_num)
+	if (tag >= MVS_RSVD_SLOTS)
 		return -SAS_QUEUE_FULL;
 	mvs_tag_set(mvi, tag);
 	*tag_out = tag;
 	return 0;
 }
 
-void mvs_tag_init(struct mvs_info *mvi)
-{
-	int i;
-	for (i = 0; i < mvi->tags_num; ++i)
-		mvs_tag_clear(mvi, i);
-}
-
 static struct mvs_info *mvs_find_dev_mvi(struct domain_device *dev)
 {
 	unsigned long i = 0, j = 0, hi = 0;
@@ -703,6 +699,7 @@ static int mvs_task_prep(struct sas_task *task, struct mvs_info *mvi, int is_tmf
 	struct mvs_task_exec_info tei;
 	struct mvs_slot_info *slot;
 	u32 tag = 0xdeadbeef, n_elem = 0;
+	struct request *rq;
 	int rc = 0;
 
 	if (!dev->port) {
@@ -767,9 +764,14 @@ static int mvs_task_prep(struct sas_task *task, struct mvs_info *mvi, int is_tmf
 		n_elem = task->num_scatter;
 	}
 
-	rc = mvs_tag_alloc(mvi, &tag);
-	if (rc)
-		goto err_out;
+	rq = sas_task_find_rq(task);
+	if (rq) {
+		tag = rq->tag + MVS_RSVD_SLOTS;
+	} else {
+		rc = mvs_tag_alloc(mvi, &tag);
+		if (rc)
+			goto err_out;
+	}
 
 	slot = &mvi->slot_info[tag];
 
@@ -864,7 +866,7 @@ int mvs_queue_command(struct sas_task *task, gfp_t gfp_flags)
 static void mvs_slot_free(struct mvs_info *mvi, u32 rx_desc)
 {
 	u32 slot_idx = rx_desc & RXQ_SLOT_MASK;
-	mvs_tag_clear(mvi, slot_idx);
+	mvs_tag_free(mvi, slot_idx);
 }
 
 static void mvs_slot_task_free(struct mvs_info *mvi, struct sas_task *task,
@@ -1190,23 +1192,16 @@ static int mvs_dev_found_notify(struct domain_device *dev, int lock)
 	mvi_device->sas_device = dev;
 	if (parent_dev && dev_is_expander(parent_dev->dev_type)) {
 		int phy_id;
-		u8 phy_num = parent_dev->ex_dev.num_phys;
-		struct ex_phy *phy;
-		for (phy_id = 0; phy_id < phy_num; phy_id++) {
-			phy = &parent_dev->ex_dev.ex_phy[phy_id];
-			if (SAS_ADDR(phy->attached_sas_addr) ==
-				SAS_ADDR(dev->sas_addr)) {
-				mvi_device->attached_phy = phy_id;
-				break;
-			}
-		}
 
-		if (phy_id == phy_num) {
+		phy_id = sas_find_attached_phy_id(&parent_dev->ex_dev, dev);
+		if (phy_id < 0) {
 			mv_printk("Error: no attached dev:%016llx"
 				"at ex:%016llx.\n",
 				SAS_ADDR(dev->sas_addr),
 				SAS_ADDR(parent_dev->sas_addr));
-			res = -1;
+			res = phy_id;
+		} else {
+			mvi_device->attached_phy = phy_id;
 		}
 	}
 
diff --git a/drivers/scsi/mvsas/mv_sas.h b/drivers/scsi/mvsas/mv_sas.h
index 509d8f32a04f..68df771e2975 100644
--- a/drivers/scsi/mvsas/mv_sas.h
+++ b/drivers/scsi/mvsas/mv_sas.h
@@ -370,8 +370,7 @@ struct mvs_info {
 	u32 chip_id;
 	const struct mvs_chip_info *chip;
 
-	int tags_num;
-	unsigned long *tags;
+	unsigned long *rsvd_tags;
 	/* further per-slot information */
 	struct mvs_phy phy[MVS_MAX_PHYS];
 	struct mvs_port port[MVS_MAX_PHYS];
@@ -424,11 +423,6 @@ struct mvs_task_exec_info {
 
 /******************** function prototype *********************/
 void mvs_get_sas_addr(void *buf, u32 buflen);
-void mvs_tag_clear(struct mvs_info *mvi, u32 tag);
-void mvs_tag_free(struct mvs_info *mvi, u32 tag);
-void mvs_tag_set(struct mvs_info *mvi, unsigned int tag);
-int mvs_tag_alloc(struct mvs_info *mvi, u32 *tag_out);
-void mvs_tag_init(struct mvs_info *mvi);
 void mvs_iounmap(void __iomem *regs);
 int mvs_ioremap(struct mvs_info *mvi, int bar, int bar_ex);
 void mvs_phys_reset(struct mvs_info *mvi, u32 phy_mask, int hard);
diff --git a/drivers/scsi/mvumi.c b/drivers/scsi/mvumi.c
index 05d3ce9b72db..b3dcb8918618 100644
--- a/drivers/scsi/mvumi.c
+++ b/drivers/scsi/mvumi.c
@@ -2109,7 +2109,7 @@ out_return_cmd:
 	return 0;
 }
 
-static enum blk_eh_timer_return mvumi_timed_out(struct scsi_cmnd *scmd)
+static enum scsi_timeout_action mvumi_timed_out(struct scsi_cmnd *scmd)
 {
 	struct mvumi_cmd *cmd = mvumi_priv(scmd)->cmd_priv;
 	struct Scsi_Host *host = scmd->device->host;
@@ -2137,7 +2137,7 @@ static enum blk_eh_timer_return mvumi_timed_out(struct scsi_cmnd *scmd)
 	mvumi_return_cmd(mhba, cmd);
 	spin_unlock_irqrestore(mhba->shost->host_lock, flags);
 
-	return BLK_EH_DONE;
+	return SCSI_EH_NOT_HANDLED;
 }
 
 static int
diff --git a/drivers/scsi/pcmcia/nsp_cs.c b/drivers/scsi/pcmcia/nsp_cs.c
index 48acab03a8a0..a5a1406a2bde 100644
--- a/drivers/scsi/pcmcia/nsp_cs.c
+++ b/drivers/scsi/pcmcia/nsp_cs.c
@@ -450,8 +450,6 @@ static int nsp_analyze_sdtr(struct scsi_cmnd *SCpnt)
 	sync_data	      *sync   = &(data->Sync[target]);
 	struct nsp_sync_table *sync_table;
 	unsigned int	       period, offset;
-	int		       i;
-
 
 	nsp_dbg(NSP_DEBUG_SYNC, "in");
 
@@ -466,7 +464,7 @@ static int nsp_analyze_sdtr(struct scsi_cmnd *SCpnt)
 		sync_table = nsp_sync_table_40M;
 	}
 
-	for ( i = 0; sync_table->max_period != 0; i++, sync_table++) {
+	for (; sync_table->max_period != 0; sync_table++) {
 		if ( period >= sync_table->min_period &&
 		     period <= sync_table->max_period	 ) {
 			break;
diff --git a/drivers/scsi/pm8001/pm8001_hwi.c b/drivers/scsi/pm8001/pm8001_hwi.c
index 628b08ba6770..ec1a9ab61814 100644
--- a/drivers/scsi/pm8001/pm8001_hwi.c
+++ b/drivers/scsi/pm8001/pm8001_hwi.c
@@ -1724,7 +1724,14 @@ void pm8001_work_fn(struct work_struct *work)
 				pm8001_free_dev(pm8001_dev);
 			}
 		}
-	}	break;
+	}
+	break;
+	case IO_XFER_ERROR_ABORTED_NCQ_MODE:
+	{
+		dev = pm8001_dev->sas_device;
+		sas_ata_device_link_abort(dev, false);
+	}
+	break;
 	}
 	kfree(pw);
 }
@@ -1748,110 +1755,6 @@ int pm8001_handle_event(struct pm8001_hba_info *pm8001_ha, void *data,
 	return ret;
 }
 
-static void pm8001_send_abort_all(struct pm8001_hba_info *pm8001_ha,
-		struct pm8001_device *pm8001_ha_dev)
-{
-	struct pm8001_ccb_info *ccb;
-	struct sas_task *task;
-	struct task_abort_req task_abort;
-	u32 opc = OPC_INB_SATA_ABORT;
-	int ret;
-
-	pm8001_ha_dev->id |= NCQ_ABORT_ALL_FLAG;
-	pm8001_ha_dev->id &= ~NCQ_READ_LOG_FLAG;
-
-	task = sas_alloc_slow_task(GFP_ATOMIC);
-	if (!task) {
-		pm8001_dbg(pm8001_ha, FAIL, "cannot allocate task\n");
-		return;
-	}
-
-	task->task_done = pm8001_task_done;
-
-	ccb = pm8001_ccb_alloc(pm8001_ha, pm8001_ha_dev, task);
-	if (!ccb) {
-		sas_free_task(task);
-		return;
-	}
-
-	memset(&task_abort, 0, sizeof(task_abort));
-	task_abort.abort_all = cpu_to_le32(1);
-	task_abort.device_id = cpu_to_le32(pm8001_ha_dev->device_id);
-	task_abort.tag = cpu_to_le32(ccb->ccb_tag);
-
-	ret = pm8001_mpi_build_cmd(pm8001_ha, 0, opc, &task_abort,
-				   sizeof(task_abort), 0);
-	if (ret) {
-		sas_free_task(task);
-		pm8001_ccb_free(pm8001_ha, ccb);
-	}
-}
-
-static void pm8001_send_read_log(struct pm8001_hba_info *pm8001_ha,
-		struct pm8001_device *pm8001_ha_dev)
-{
-	struct sata_start_req sata_cmd;
-	int res;
-	struct pm8001_ccb_info *ccb;
-	struct sas_task *task = NULL;
-	struct host_to_dev_fis fis;
-	struct domain_device *dev;
-	u32 opc = OPC_INB_SATA_HOST_OPSTART;
-
-	task = sas_alloc_slow_task(GFP_ATOMIC);
-	if (!task) {
-		pm8001_dbg(pm8001_ha, FAIL, "cannot allocate task !!!\n");
-		return;
-	}
-	task->task_done = pm8001_task_done;
-
-	/*
-	 * Allocate domain device by ourselves as libsas is not going to
-	 * provide any.
-	 */
-	dev = kzalloc(sizeof(struct domain_device), GFP_ATOMIC);
-	if (!dev) {
-		sas_free_task(task);
-		pm8001_dbg(pm8001_ha, FAIL,
-			   "Domain device cannot be allocated\n");
-		return;
-	}
-	task->dev = dev;
-	task->dev->lldd_dev = pm8001_ha_dev;
-
-	ccb = pm8001_ccb_alloc(pm8001_ha, pm8001_ha_dev, task);
-	if (!ccb) {
-		sas_free_task(task);
-		kfree(dev);
-		return;
-	}
-
-	pm8001_ha_dev->id |= NCQ_READ_LOG_FLAG;
-	pm8001_ha_dev->id |= NCQ_2ND_RLE_FLAG;
-
-	/* construct read log FIS */
-	memset(&fis, 0, sizeof(struct host_to_dev_fis));
-	fis.fis_type = 0x27;
-	fis.flags = 0x80;
-	fis.command = ATA_CMD_READ_LOG_EXT;
-	fis.lbal = 0x10;
-	fis.sector_count = 0x1;
-
-	memset(&sata_cmd, 0, sizeof(sata_cmd));
-	sata_cmd.tag = cpu_to_le32(ccb->ccb_tag);
-	sata_cmd.device_id = cpu_to_le32(pm8001_ha_dev->device_id);
-	sata_cmd.ncqtag_atap_dir_m = cpu_to_le32((0x1 << 7) | (0x5 << 9));
-	memcpy(&sata_cmd.sata_fis, &fis, sizeof(struct host_to_dev_fis));
-
-	res = pm8001_mpi_build_cmd(pm8001_ha, 0, opc, &sata_cmd,
-				   sizeof(sata_cmd), 0);
-	if (res) {
-		sas_free_task(task);
-		pm8001_ccb_free(pm8001_ha, ccb);
-		kfree(dev);
-	}
-}
-
 /**
  * mpi_ssp_completion- process the event that FW response to the SSP request.
  * @pm8001_ha: our hba card information
@@ -2295,12 +2198,13 @@ mpi_sata_completion(struct pm8001_hba_info *pm8001_ha, void *piomb)
 		if (t->dev && (t->dev->lldd_dev))
 			pm8001_dev = t->dev->lldd_dev;
 	} else {
-		pm8001_dbg(pm8001_ha, FAIL, "task null\n");
+		pm8001_dbg(pm8001_ha, FAIL, "task null, freeing CCB tag %d\n",
+			   ccb->ccb_tag);
+		pm8001_ccb_free(pm8001_ha, ccb);
 		return;
 	}
 
-	if ((pm8001_dev && !(pm8001_dev->id & NCQ_READ_LOG_FLAG))
-		&& unlikely(!t || !t->lldd_task || !t->dev)) {
+	if (pm8001_dev && unlikely(!t || !t->lldd_task || !t->dev)) {
 		pm8001_dbg(pm8001_ha, FAIL, "task or dev null\n");
 		return;
 	}
@@ -2358,15 +2262,6 @@ mpi_sata_completion(struct pm8001_hba_info *pm8001_ha, void *piomb)
 		if (param == 0) {
 			ts->resp = SAS_TASK_COMPLETE;
 			ts->stat = SAS_SAM_STAT_GOOD;
-			/* check if response is for SEND READ LOG */
-			if (pm8001_dev &&
-			    (pm8001_dev->id & NCQ_READ_LOG_FLAG)) {
-				pm8001_send_abort_all(pm8001_ha, pm8001_dev);
-				/* Free the tag */
-				pm8001_tag_free(pm8001_ha, tag);
-				sas_free_task(t);
-				return;
-			}
 		} else {
 			u8 len;
 			ts->resp = SAS_TASK_COMPLETE;
@@ -2664,9 +2559,10 @@ static void mpi_sata_event(struct pm8001_hba_info *pm8001_ha, void *piomb)
 	if (event == IO_XFER_ERROR_ABORTED_NCQ_MODE) {
 		/* find device using device id */
 		pm8001_dev = pm8001_find_dev(pm8001_ha, dev_id);
-		/* send read log extension */
 		if (pm8001_dev)
-			pm8001_send_read_log(pm8001_ha, pm8001_dev);
+			pm8001_handle_event(pm8001_ha,
+				pm8001_dev,
+				IO_XFER_ERROR_ABORTED_NCQ_MODE);
 		return;
 	}
 
@@ -2675,8 +2571,17 @@ static void mpi_sata_event(struct pm8001_hba_info *pm8001_ha, void *piomb)
 	pm8001_dev = ccb->device;
 	if (event)
 		pm8001_dbg(pm8001_ha, FAIL, "sata IO status 0x%x\n", event);
-	if (unlikely(!t || !t->lldd_task || !t->dev))
+
+	if (unlikely(!t)) {
+		pm8001_dbg(pm8001_ha, FAIL, "task null, freeing CCB tag %d\n",
+			   ccb->ccb_tag);
+		pm8001_ccb_free(pm8001_ha, ccb);
 		return;
+	}
+
+	if (unlikely(!t->lldd_task || !t->dev))
+		return;
+
 	ts = &t->task_status;
 	pm8001_dbg(pm8001_ha, DEVIO,
 		   "port_id:0x%x, device_id:0x%x, tag:0x%x, event:0x%x\n",
@@ -3638,12 +3543,7 @@ int pm8001_mpi_task_abort_resp(struct pm8001_hba_info *pm8001_ha, void *piomb)
 	pm8001_ccb_task_free(pm8001_ha, ccb);
 	mb();
 
-	if (pm8001_dev->id & NCQ_ABORT_ALL_FLAG) {
-		sas_free_task(t);
-		pm8001_dev->id &= ~NCQ_ABORT_ALL_FLAG;
-	} else {
-		t->task_done(t);
-	}
+	t->task_done(t);
 
 	return 0;
 }
@@ -4195,7 +4095,6 @@ static int pm8001_chip_sata_req(struct pm8001_hba_info *pm8001_ha,
 	u64 phys_addr;
 	u32 ATAP = 0x0;
 	u32 dir;
-	unsigned long flags;
 	u32  opc = OPC_INB_SATA_HOST_OPSTART;
 
 	memset(&sata_cmd, 0, sizeof(sata_cmd));
@@ -4250,39 +4149,6 @@ static int pm8001_chip_sata_req(struct pm8001_hba_info *pm8001_ha,
 		sata_cmd.esgl = 0;
 	}
 
-	/* Check for read log for failed drive and return */
-	if (sata_cmd.sata_fis.command == 0x2f) {
-		if (((pm8001_ha_dev->id & NCQ_READ_LOG_FLAG) ||
-			(pm8001_ha_dev->id & NCQ_ABORT_ALL_FLAG) ||
-			(pm8001_ha_dev->id & NCQ_2ND_RLE_FLAG))) {
-			struct task_status_struct *ts;
-
-			pm8001_ha_dev->id &= 0xDFFFFFFF;
-			ts = &task->task_status;
-
-			spin_lock_irqsave(&task->task_state_lock, flags);
-			ts->resp = SAS_TASK_COMPLETE;
-			ts->stat = SAS_SAM_STAT_GOOD;
-			task->task_state_flags &= ~SAS_TASK_STATE_PENDING;
-			task->task_state_flags |= SAS_TASK_STATE_DONE;
-			if (unlikely((task->task_state_flags &
-					SAS_TASK_STATE_ABORTED))) {
-				spin_unlock_irqrestore(&task->task_state_lock,
-							flags);
-				pm8001_dbg(pm8001_ha, FAIL,
-					   "task 0x%p resp 0x%x  stat 0x%x but aborted by upper layer\n",
-					   task, ts->resp,
-					   ts->stat);
-				pm8001_ccb_task_free(pm8001_ha, ccb);
-			} else {
-				spin_unlock_irqrestore(&task->task_state_lock,
-							flags);
-				pm8001_ccb_task_free_done(pm8001_ha, ccb);
-				return 0;
-			}
-		}
-	}
-
 	return pm8001_mpi_build_cmd(pm8001_ha, 0, opc, &sata_cmd,
 				    sizeof(sata_cmd), 0);
 }
diff --git a/drivers/scsi/pm8001/pm8001_init.c b/drivers/scsi/pm8001/pm8001_init.c
index 7a7d63aa90e2..7e589fe3e010 100644
--- a/drivers/scsi/pm8001/pm8001_init.c
+++ b/drivers/scsi/pm8001/pm8001_init.c
@@ -197,7 +197,7 @@ static void pm8001_free(struct pm8001_hba_info *pm8001_ha)
 	}
 	PM8001_CHIP_DISP->chip_iounmap(pm8001_ha);
 	flush_workqueue(pm8001_wq);
-	bitmap_free(pm8001_ha->tags);
+	bitmap_free(pm8001_ha->rsvd_tags);
 	kfree(pm8001_ha);
 }
 
@@ -437,8 +437,6 @@ static int pm8001_alloc(struct pm8001_hba_info *pm8001_ha,
 		atomic_set(&pm8001_ha->devices[i].running_req, 0);
 	}
 	pm8001_ha->flags = PM8001F_INIT_TIME;
-	/* Initialize tags */
-	pm8001_tag_init(pm8001_ha);
 	return 0;
 
 err_out_nodev:
@@ -1211,18 +1209,15 @@ static int pm8001_init_ccb_tag(struct pm8001_hba_info *pm8001_ha)
 	struct Scsi_Host *shost = pm8001_ha->shost;
 	struct device *dev = pm8001_ha->dev;
 	u32 max_out_io, ccb_count;
-	u32 can_queue;
 	int i;
 
 	max_out_io = pm8001_ha->main_cfg_tbl.pm80xx_tbl.max_out_io;
 	ccb_count = min_t(int, PM8001_MAX_CCB, max_out_io);
 
-	/* Update to the scsi host*/
-	can_queue = ccb_count - PM8001_RESERVE_SLOT;
-	shost->can_queue = can_queue;
+	shost->can_queue = ccb_count - PM8001_RESERVE_SLOT;
 
-	pm8001_ha->tags = bitmap_zalloc(ccb_count, GFP_KERNEL);
-	if (!pm8001_ha->tags)
+	pm8001_ha->rsvd_tags = bitmap_zalloc(PM8001_RESERVE_SLOT, GFP_KERNEL);
+	if (!pm8001_ha->rsvd_tags)
 		goto err_out;
 
 	/* Memory region for ccb_info*/
@@ -1247,7 +1242,6 @@ static int pm8001_init_ccb_tag(struct pm8001_hba_info *pm8001_ha)
 		pm8001_ha->ccb_info[i].task = NULL;
 		pm8001_ha->ccb_info[i].ccb_tag = PM8001_INVALID_TAG;
 		pm8001_ha->ccb_info[i].device = NULL;
-		++pm8001_ha->tags_num;
 	}
 
 	return 0;
diff --git a/drivers/scsi/pm8001/pm8001_sas.c b/drivers/scsi/pm8001/pm8001_sas.c
index 8e3f2f9ddaac..e5673c774f66 100644
--- a/drivers/scsi/pm8001/pm8001_sas.c
+++ b/drivers/scsi/pm8001/pm8001_sas.c
@@ -65,9 +65,12 @@ static int pm8001_find_tag(struct sas_task *task, u32 *tag)
   */
 void pm8001_tag_free(struct pm8001_hba_info *pm8001_ha, u32 tag)
 {
-	void *bitmap = pm8001_ha->tags;
+	void *bitmap = pm8001_ha->rsvd_tags;
 	unsigned long flags;
 
+	if (tag >= PM8001_RESERVE_SLOT)
+		return;
+
 	spin_lock_irqsave(&pm8001_ha->bitmap_lock, flags);
 	__clear_bit(tag, bitmap);
 	spin_unlock_irqrestore(&pm8001_ha->bitmap_lock, flags);
@@ -80,29 +83,24 @@ void pm8001_tag_free(struct pm8001_hba_info *pm8001_ha, u32 tag)
   */
 int pm8001_tag_alloc(struct pm8001_hba_info *pm8001_ha, u32 *tag_out)
 {
-	void *bitmap = pm8001_ha->tags;
+	void *bitmap = pm8001_ha->rsvd_tags;
 	unsigned long flags;
 	unsigned int tag;
 
 	spin_lock_irqsave(&pm8001_ha->bitmap_lock, flags);
-	tag = find_first_zero_bit(bitmap, pm8001_ha->tags_num);
-	if (tag >= pm8001_ha->tags_num) {
+	tag = find_first_zero_bit(bitmap, PM8001_RESERVE_SLOT);
+	if (tag >= PM8001_RESERVE_SLOT) {
 		spin_unlock_irqrestore(&pm8001_ha->bitmap_lock, flags);
 		return -SAS_QUEUE_FULL;
 	}
 	__set_bit(tag, bitmap);
 	spin_unlock_irqrestore(&pm8001_ha->bitmap_lock, flags);
+
+	/* reserved tags are in the lower region of the tagset */
 	*tag_out = tag;
 	return 0;
 }
 
-void pm8001_tag_init(struct pm8001_hba_info *pm8001_ha)
-{
-	int i;
-	for (i = 0; i < pm8001_ha->tags_num; ++i)
-		pm8001_tag_free(pm8001_ha, i);
-}
-
 /**
  * pm8001_mem_alloc - allocate memory for pm8001.
  * @pdev: pci device.
@@ -645,22 +643,16 @@ static int pm8001_dev_found_notify(struct domain_device *dev)
 	pm8001_device->dcompletion = &completion;
 	if (parent_dev && dev_is_expander(parent_dev->dev_type)) {
 		int phy_id;
-		struct ex_phy *phy;
-		for (phy_id = 0; phy_id < parent_dev->ex_dev.num_phys;
-		phy_id++) {
-			phy = &parent_dev->ex_dev.ex_phy[phy_id];
-			if (SAS_ADDR(phy->attached_sas_addr)
-				== SAS_ADDR(dev->sas_addr)) {
-				pm8001_device->attached_phy = phy_id;
-				break;
-			}
-		}
-		if (phy_id == parent_dev->ex_dev.num_phys) {
+
+		phy_id = sas_find_attached_phy_id(&parent_dev->ex_dev, dev);
+		if (phy_id < 0) {
 			pm8001_dbg(pm8001_ha, FAIL,
 				   "Error: no attached dev:%016llx at ex:%016llx.\n",
 				   SAS_ADDR(dev->sas_addr),
 				   SAS_ADDR(parent_dev->sas_addr));
-			res = -1;
+			res = phy_id;
+		} else {
+			pm8001_device->attached_phy = phy_id;
 		}
 	} else {
 		if (dev->dev_type == SAS_SATA_DEV) {
@@ -687,12 +679,6 @@ int pm8001_dev_found(struct domain_device *dev)
 	return pm8001_dev_found_notify(dev);
 }
 
-void pm8001_task_done(struct sas_task *task)
-{
-	del_timer(&task->slow_task->timer);
-	complete(&task->slow_task->completion);
-}
-
 #define PM8001_TASK_TIMEOUT 20
 
 /**
@@ -983,6 +969,7 @@ int pm8001_query_task(struct sas_task *task)
 /*  mandatory SAM-3, still need free task/ccb info, abort the specified task */
 int pm8001_abort_task(struct sas_task *task)
 {
+	struct pm8001_ccb_info *ccb = task->lldd_task;
 	unsigned long flags;
 	u32 tag;
 	struct domain_device *dev ;
@@ -992,7 +979,7 @@ int pm8001_abort_task(struct sas_task *task)
 	u32 phy_id, port_id;
 	struct sas_task_slow slow_task;
 
-	if (unlikely(!task || !task->lldd_task || !task->dev))
+	if (!task->lldd_task || !task->dev)
 		return TMF_RESP_FUNC_FAILED;
 
 	dev = task->dev;
@@ -1113,6 +1100,13 @@ int pm8001_abort_task(struct sas_task *task)
 				pm8001_dev, DS_OPERATIONAL);
 			wait_for_completion(&completion);
 		} else {
+			/*
+			 * Ensure that if we see a completion for the ccb
+			 * associated with the task which we are trying to
+			 * abort then we should not touch the sas_task as it
+			 * may race with libsas freeing it when return here.
+			 */
+			ccb->task = NULL;
 			ret = sas_execute_internal_abort_single(dev, tag, 0, NULL);
 		}
 		rc = TMF_RESP_FUNC_COMPLETE;
diff --git a/drivers/scsi/pm8001/pm8001_sas.h b/drivers/scsi/pm8001/pm8001_sas.h
index b08f52673889..dc1f4d958e03 100644
--- a/drivers/scsi/pm8001/pm8001_sas.h
+++ b/drivers/scsi/pm8001/pm8001_sas.h
@@ -510,8 +510,7 @@ struct pm8001_hba_info {
 	u32			chip_id;
 	const struct pm8001_chip_info	*chip;
 	struct completion	*nvmd_completion;
-	int			tags_num;
-	unsigned long		*tags;
+	unsigned long		*rsvd_tags;
 	struct pm8001_phy	phy[PM8001_MAX_PHYS];
 	struct pm8001_port	port[PM8001_MAX_PHYS];
 	u32			id;
@@ -535,7 +534,6 @@ struct pm8001_hba_info {
 	bool			controller_fatal_error;
 	const struct firmware 	*fw_image;
 	struct isr_param irq_vector[PM8001_MAX_MSIX_VEC];
-	u32			reset_in_progress;
 	u32			non_fatal_count;
 	u32			non_fatal_read_length;
 	u32 max_q_num;
@@ -579,10 +577,6 @@ struct pm8001_fw_image_header {
 #define FLASH_UPDATE_DNLD_NOT_SUPPORTED		0x10
 #define FLASH_UPDATE_DISABLED			0x11
 
-#define	NCQ_READ_LOG_FLAG			0x80000000
-#define	NCQ_ABORT_ALL_FLAG			0x40000000
-#define	NCQ_2ND_RLE_FLAG			0x20000000
-
 /* Device states */
 #define DS_OPERATIONAL				0x01
 #define DS_PORT_IN_RESET			0x02
@@ -636,7 +630,6 @@ extern struct workqueue_struct *pm8001_wq;
 
 /******************** function prototype *********************/
 int pm8001_tag_alloc(struct pm8001_hba_info *pm8001_ha, u32 *tag_out);
-void pm8001_tag_init(struct pm8001_hba_info *pm8001_ha);
 u32 pm8001_get_ncq_tag(struct sas_task *task, u32 *tag);
 void pm8001_ccb_task_free(struct pm8001_hba_info *pm8001_ha,
 			  struct pm8001_ccb_info *ccb);
@@ -709,7 +702,6 @@ int pm8001_mpi_fw_flash_update_resp(struct pm8001_hba_info *pm8001_ha,
 int pm8001_mpi_general_event(struct pm8001_hba_info *pm8001_ha, void *piomb);
 int pm8001_mpi_task_abort_resp(struct pm8001_hba_info *pm8001_ha, void *piomb);
 struct sas_task *pm8001_alloc_task(void);
-void pm8001_task_done(struct sas_task *task);
 void pm8001_free_task(struct sas_task *task);
 void pm8001_tag_free(struct pm8001_hba_info *pm8001_ha, u32 tag);
 struct pm8001_device *pm8001_find_dev(struct pm8001_hba_info *pm8001_ha,
@@ -742,9 +734,15 @@ pm8001_ccb_alloc(struct pm8001_hba_info *pm8001_ha,
 		 struct pm8001_device *dev, struct sas_task *task)
 {
 	struct pm8001_ccb_info *ccb;
+	struct request *rq = NULL;
 	u32 tag;
 
-	if (pm8001_tag_alloc(pm8001_ha, &tag)) {
+	if (task)
+		rq = sas_task_find_rq(task);
+
+	if (rq) {
+		tag = rq->tag + PM8001_RESERVE_SLOT;
+	} else if (pm8001_tag_alloc(pm8001_ha, &tag)) {
 		pm8001_dbg(pm8001_ha, FAIL, "Failed to allocate a tag\n");
 		return NULL;
 	}
diff --git a/drivers/scsi/pm8001/pm80xx_hwi.c b/drivers/scsi/pm8001/pm80xx_hwi.c
index f8b8624458f7..9584cadc4201 100644
--- a/drivers/scsi/pm8001/pm80xx_hwi.c
+++ b/drivers/scsi/pm8001/pm80xx_hwi.c
@@ -1778,113 +1778,6 @@ pm80xx_chip_interrupt_disable(struct pm8001_hba_info *pm8001_ha, u8 vec)
 	pm80xx_chip_intx_interrupt_disable(pm8001_ha);
 }
 
-static void pm80xx_send_abort_all(struct pm8001_hba_info *pm8001_ha,
-		struct pm8001_device *pm8001_ha_dev)
-{
-	struct pm8001_ccb_info *ccb;
-	struct sas_task *task;
-	struct task_abort_req task_abort;
-	u32 opc = OPC_INB_SATA_ABORT;
-	int ret;
-
-	pm8001_ha_dev->id |= NCQ_ABORT_ALL_FLAG;
-	pm8001_ha_dev->id &= ~NCQ_READ_LOG_FLAG;
-
-	task = sas_alloc_slow_task(GFP_ATOMIC);
-	if (!task) {
-		pm8001_dbg(pm8001_ha, FAIL, "cannot allocate task\n");
-		return;
-	}
-	task->task_done = pm8001_task_done;
-
-	ccb = pm8001_ccb_alloc(pm8001_ha, pm8001_ha_dev, task);
-	if (!ccb) {
-		sas_free_task(task);
-		return;
-	}
-
-	memset(&task_abort, 0, sizeof(task_abort));
-	task_abort.abort_all = cpu_to_le32(1);
-	task_abort.device_id = cpu_to_le32(pm8001_ha_dev->device_id);
-	task_abort.tag = cpu_to_le32(ccb->ccb_tag);
-
-	ret = pm8001_mpi_build_cmd(pm8001_ha, 0, opc, &task_abort,
-				   sizeof(task_abort), 0);
-	pm8001_dbg(pm8001_ha, FAIL, "Executing abort task end\n");
-	if (ret) {
-		sas_free_task(task);
-		pm8001_ccb_free(pm8001_ha, ccb);
-	}
-}
-
-static void pm80xx_send_read_log(struct pm8001_hba_info *pm8001_ha,
-		struct pm8001_device *pm8001_ha_dev)
-{
-	struct sata_start_req sata_cmd;
-	int res;
-	struct pm8001_ccb_info *ccb;
-	struct sas_task *task = NULL;
-	struct host_to_dev_fis fis;
-	struct domain_device *dev;
-	u32 opc = OPC_INB_SATA_HOST_OPSTART;
-
-	task = sas_alloc_slow_task(GFP_ATOMIC);
-	if (!task) {
-		pm8001_dbg(pm8001_ha, FAIL, "cannot allocate task !!!\n");
-		return;
-	}
-	task->task_done = pm8001_task_done;
-
-	/*
-	 * Allocate domain device by ourselves as libsas is not going to
-	 * provide any.
-	 */
-	dev = kzalloc(sizeof(struct domain_device), GFP_ATOMIC);
-	if (!dev) {
-		sas_free_task(task);
-		pm8001_dbg(pm8001_ha, FAIL,
-			   "Domain device cannot be allocated\n");
-		return;
-	}
-
-	task->dev = dev;
-	task->dev->lldd_dev = pm8001_ha_dev;
-
-	ccb = pm8001_ccb_alloc(pm8001_ha, pm8001_ha_dev, task);
-	if (!ccb) {
-		sas_free_task(task);
-		kfree(dev);
-		return;
-	}
-
-	pm8001_ha_dev->id |= NCQ_READ_LOG_FLAG;
-	pm8001_ha_dev->id |= NCQ_2ND_RLE_FLAG;
-
-	memset(&sata_cmd, 0, sizeof(sata_cmd));
-
-	/* construct read log FIS */
-	memset(&fis, 0, sizeof(struct host_to_dev_fis));
-	fis.fis_type = 0x27;
-	fis.flags = 0x80;
-	fis.command = ATA_CMD_READ_LOG_EXT;
-	fis.lbal = 0x10;
-	fis.sector_count = 0x1;
-
-	sata_cmd.tag = cpu_to_le32(ccb->ccb_tag);
-	sata_cmd.device_id = cpu_to_le32(pm8001_ha_dev->device_id);
-	sata_cmd.ncqtag_atap_dir_m_dad = cpu_to_le32(((0x1 << 7) | (0x5 << 9)));
-	memcpy(&sata_cmd.sata_fis, &fis, sizeof(struct host_to_dev_fis));
-
-	res = pm8001_mpi_build_cmd(pm8001_ha, 0, opc, &sata_cmd,
-				   sizeof(sata_cmd), 0);
-	pm8001_dbg(pm8001_ha, FAIL, "Executing read log end\n");
-	if (res) {
-		sas_free_task(task);
-		pm8001_ccb_free(pm8001_ha, ccb);
-		kfree(dev);
-	}
-}
-
 /**
  * mpi_ssp_completion - process the event that FW response to the SSP request.
  * @pm8001_ha: our hba card information
@@ -2396,15 +2289,15 @@ mpi_sata_completion(struct pm8001_hba_info *pm8001_ha,
 		if (t->dev && (t->dev->lldd_dev))
 			pm8001_dev = t->dev->lldd_dev;
 	} else {
-		pm8001_dbg(pm8001_ha, FAIL, "task null\n");
+		pm8001_dbg(pm8001_ha, FAIL, "task null, freeing CCB tag %d\n",
+			   ccb->ccb_tag);
+		pm8001_ccb_free(pm8001_ha, ccb);
 		return;
 	}
 
-	if ((pm8001_dev && !(pm8001_dev->id & NCQ_READ_LOG_FLAG))
-		&& unlikely(!t || !t->lldd_task || !t->dev)) {
-		pm8001_dbg(pm8001_ha, FAIL, "task or dev null\n");
+
+	if (pm8001_dev && unlikely(!t->lldd_task || !t->dev))
 		return;
-	}
 
 	ts = &t->task_status;
 
@@ -2461,15 +2354,6 @@ mpi_sata_completion(struct pm8001_hba_info *pm8001_ha,
 		if (param == 0) {
 			ts->resp = SAS_TASK_COMPLETE;
 			ts->stat = SAS_SAM_STAT_GOOD;
-			/* check if response is for SEND READ LOG */
-			if (pm8001_dev &&
-			    (pm8001_dev->id & NCQ_READ_LOG_FLAG)) {
-				pm80xx_send_abort_all(pm8001_ha, pm8001_dev);
-				/* Free the tag */
-				pm8001_tag_free(pm8001_ha, tag);
-				sas_free_task(t);
-				return;
-			}
 		} else {
 			u8 len;
 			ts->resp = SAS_TASK_COMPLETE;
@@ -2804,21 +2688,27 @@ static void mpi_sata_event(struct pm8001_hba_info *pm8001_ha,
 	if (event == IO_XFER_ERROR_ABORTED_NCQ_MODE) {
 		/* find device using device id */
 		pm8001_dev = pm8001_find_dev(pm8001_ha, dev_id);
-		/* send read log extension */
+		/* send read log extension by aborting the link - libata does what we want */
 		if (pm8001_dev)
-			pm80xx_send_read_log(pm8001_ha, pm8001_dev);
+			pm8001_handle_event(pm8001_ha,
+				pm8001_dev,
+				IO_XFER_ERROR_ABORTED_NCQ_MODE);
 		return;
 	}
 
 	ccb = &pm8001_ha->ccb_info[tag];
 	t = ccb->task;
 	pm8001_dev = ccb->device;
-
-	if (unlikely(!t || !t->lldd_task || !t->dev)) {
-		pm8001_dbg(pm8001_ha, FAIL, "task or dev null\n");
+	if (unlikely(!t)) {
+		pm8001_dbg(pm8001_ha, FAIL, "task null, freeing CCB tag %d\n",
+			   ccb->ccb_tag);
+		pm8001_ccb_free(pm8001_ha, ccb);
 		return;
 	}
 
+	if (unlikely(!t->lldd_task || !t->dev))
+		return;
+
 	ts = &t->task_status;
 	pm8001_dbg(pm8001_ha, IOERR, "port_id:0x%x, tag:0x%x, event:0x%x\n",
 		   port_id, tag, event);
@@ -3550,10 +3440,6 @@ static int mpi_hw_event(struct pm8001_hba_info *pm8001_ha, void *piomb)
 	case HW_EVENT_PHY_DOWN:
 		pm8001_dbg(pm8001_ha, MSG, "HW_EVENT_PHY_DOWN\n");
 		hw_event_phy_down(pm8001_ha, piomb);
-		if (pm8001_ha->reset_in_progress) {
-			pm8001_dbg(pm8001_ha, MSG, "Reset in progress\n");
-			return 0;
-		}
 		phy->phy_attached = 0;
 		phy->phy_state = PHY_LINK_DISABLE;
 		break;
@@ -4357,25 +4243,12 @@ static int check_enc_sat_cmd(struct sas_task *task)
 
 static u32 pm80xx_chip_get_q_index(struct sas_task *task)
 {
-	struct scsi_cmnd *scmd = NULL;
-	u32 blk_tag;
-
-	if (task->uldd_task) {
-		struct ata_queued_cmd *qc;
+	struct request *rq = sas_task_find_rq(task);
 
-		if (dev_is_sata(task->dev)) {
-			qc = task->uldd_task;
-			scmd = qc->scsicmd;
-		} else {
-			scmd = task->uldd_task;
-		}
-	}
-
-	if (!scmd)
+	if (!rq)
 		return 0;
 
-	blk_tag = blk_mq_unique_tag(scsi_cmd_to_rq(scmd));
-	return blk_mq_unique_tag_to_hwq(blk_tag);
+	return blk_mq_unique_tag_to_hwq(blk_mq_unique_tag(rq));
 }
 
 /**
@@ -4550,7 +4423,6 @@ static int pm80xx_chip_sata_req(struct pm8001_hba_info *pm8001_ha,
 	u32 end_addr_high, end_addr_low;
 	u32 ATAP = 0x0;
 	u32 dir;
-	unsigned long flags;
 	u32 opc = OPC_INB_SATA_HOST_OPSTART;
 	memset(&sata_cmd, 0, sizeof(sata_cmd));
 
@@ -4729,40 +4601,6 @@ static int pm80xx_chip_sata_req(struct pm8001_hba_info *pm8001_ha,
 				     (task->ata_task.atapi_packet[15] << 24)));
 	}
 
-	/* Check for read log for failed drive and return */
-	if (sata_cmd.sata_fis.command == 0x2f) {
-		if (pm8001_ha_dev && ((pm8001_ha_dev->id & NCQ_READ_LOG_FLAG) ||
-			(pm8001_ha_dev->id & NCQ_ABORT_ALL_FLAG) ||
-			(pm8001_ha_dev->id & NCQ_2ND_RLE_FLAG))) {
-			struct task_status_struct *ts;
-
-			pm8001_ha_dev->id &= 0xDFFFFFFF;
-			ts = &task->task_status;
-
-			spin_lock_irqsave(&task->task_state_lock, flags);
-			ts->resp = SAS_TASK_COMPLETE;
-			ts->stat = SAS_SAM_STAT_GOOD;
-			task->task_state_flags &= ~SAS_TASK_STATE_PENDING;
-			task->task_state_flags |= SAS_TASK_STATE_DONE;
-			if (unlikely((task->task_state_flags &
-					SAS_TASK_STATE_ABORTED))) {
-				spin_unlock_irqrestore(&task->task_state_lock,
-							flags);
-				pm8001_dbg(pm8001_ha, FAIL,
-					   "task 0x%p resp 0x%x  stat 0x%x but aborted by upper layer\n",
-					   task, ts->resp,
-					   ts->stat);
-				pm8001_ccb_task_free(pm8001_ha, ccb);
-				return 0;
-			} else {
-				spin_unlock_irqrestore(&task->task_state_lock,
-							flags);
-				pm8001_ccb_task_free_done(pm8001_ha, ccb);
-				atomic_dec(&pm8001_ha_dev->running_req);
-				return 0;
-			}
-		}
-	}
 	trace_pm80xx_request_issue(pm8001_ha->id,
 				ccb->device ? ccb->device->attached_phy : PM8001_MAX_PHYS,
 				ccb->ccb_tag, opc,
diff --git a/drivers/scsi/qedf/qedf_main.c b/drivers/scsi/qedf/qedf_main.c
index e045c6e25090..35e16600fc63 100644
--- a/drivers/scsi/qedf/qedf_main.c
+++ b/drivers/scsi/qedf/qedf_main.c
@@ -2951,7 +2951,6 @@ static int qedf_alloc_bdq(struct qedf_ctx *qedf)
 	int i;
 	struct scsi_bd *pbl;
 	u64 *list;
-	dma_addr_t page;
 
 	/* Alloc dma memory for BDQ buffers */
 	for (i = 0; i < QEDF_BDQ_SIZE; i++) {
@@ -3012,11 +3011,9 @@ static int qedf_alloc_bdq(struct qedf_ctx *qedf)
 	qedf->bdq_pbl_list_num_entries = qedf->bdq_pbl_mem_size /
 	    QEDF_PAGE_SIZE;
 	list = (u64 *)qedf->bdq_pbl_list;
-	page = qedf->bdq_pbl_list_dma;
 	for (i = 0; i < qedf->bdq_pbl_list_num_entries; i++) {
 		*list = qedf->bdq_pbl_dma;
 		list++;
-		page += QEDF_PAGE_SIZE;
 	}
 
 	return 0;
diff --git a/drivers/scsi/qla2xxx/qla_def.h b/drivers/scsi/qla2xxx/qla_def.h
index 802eec6407d9..a26a373be9da 100644
--- a/drivers/scsi/qla2xxx/qla_def.h
+++ b/drivers/scsi/qla2xxx/qla_def.h
@@ -5136,17 +5136,17 @@ struct secure_flash_update_block_pk {
 		(test_bit(ISP_ABORT_NEEDED, &ha->dpc_flags) || \
 			 test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags))
 
-#define QLA_VHA_MARK_BUSY(__vha, __bail) do {		\
-	atomic_inc(&__vha->vref_count);			\
-	mb();						\
-	if (__vha->flags.delete_progress) {		\
-		atomic_dec(&__vha->vref_count);		\
-		wake_up(&__vha->vref_waitq);		\
-		__bail = 1;				\
-	} else {					\
-		__bail = 0;				\
-	}						\
-} while (0)
+static inline bool qla_vha_mark_busy(scsi_qla_host_t *vha)
+{
+	atomic_inc(&vha->vref_count);
+	mb();
+	if (vha->flags.delete_progress) {
+		atomic_dec(&vha->vref_count);
+		wake_up(&vha->vref_waitq);
+		return true;
+	}
+	return false;
+}
 
 #define QLA_VHA_MARK_NOT_BUSY(__vha) do {		\
 	atomic_dec(&__vha->vref_count);			\
diff --git a/drivers/scsi/qla2xxx/qla_init.c b/drivers/scsi/qla2xxx/qla_init.c
index e12db95de688..ce4c5d728407 100644
--- a/drivers/scsi/qla2xxx/qla_init.c
+++ b/drivers/scsi/qla2xxx/qla_init.c
@@ -168,7 +168,6 @@ int qla24xx_async_abort_cmd(srb_t *cmd_sp, bool wait)
 	struct srb_iocb *abt_iocb;
 	srb_t *sp;
 	int rval = QLA_FUNCTION_FAILED;
-	uint8_t bail;
 
 	/* ref: INIT for ABTS command */
 	sp = qla2xxx_get_qpair_sp(cmd_sp->vha, cmd_sp->qpair, cmd_sp->fcport,
@@ -176,7 +175,7 @@ int qla24xx_async_abort_cmd(srb_t *cmd_sp, bool wait)
 	if (!sp)
 		return QLA_MEMORY_ALLOC_FAILED;
 
-	QLA_VHA_MARK_BUSY(vha, bail);
+	qla_vha_mark_busy(vha);
 	abt_iocb = &sp->u.iocb_cmd;
 	sp->type = SRB_ABT_CMD;
 	sp->name = "abort";
@@ -2020,14 +2019,13 @@ qla2x00_async_tm_cmd(fc_port_t *fcport, uint32_t flags, uint32_t lun,
 	struct srb_iocb *tm_iocb;
 	srb_t *sp;
 	int rval = QLA_FUNCTION_FAILED;
-	uint8_t bail;
 
 	/* ref: INIT */
 	sp = qla2x00_get_sp(vha, fcport, GFP_KERNEL);
 	if (!sp)
 		goto done;
 
-	QLA_VHA_MARK_BUSY(vha, bail);
+	qla_vha_mark_busy(vha);
 	sp->type = SRB_TM_CMD;
 	sp->name = "tmf";
 	qla2x00_init_async_sp(sp, qla2x00_get_async_timeout(vha),
@@ -5546,7 +5544,6 @@ static int
 qla2x00_configure_local_loop(scsi_qla_host_t *vha)
 {
 	int		rval, rval2;
-	int		found_devs;
 	int		found;
 	fc_port_t	*fcport, *new_fcport;
 	uint16_t	index;
@@ -5561,7 +5558,6 @@ qla2x00_configure_local_loop(scsi_qla_host_t *vha)
 	if (N2N_TOPO(ha))
 		return qla2x00_configure_n2n_loop(vha);
 
-	found_devs = 0;
 	new_fcport = NULL;
 	entries = MAX_FIBRE_DEVICES_LOOP;
 
@@ -5720,8 +5716,6 @@ qla2x00_configure_local_loop(scsi_qla_host_t *vha)
 
 		/* Base iIDMA settings on HBA port speed. */
 		fcport->fp_speed = ha->link_data_rate;
-
-		found_devs++;
 	}
 
 	list_for_each_entry(fcport, &vha->vp_fcports, list) {
diff --git a/drivers/scsi/qla2xxx/qla_inline.h b/drivers/scsi/qla2xxx/qla_inline.h
index db17f7f410cd..5185dc5daf80 100644
--- a/drivers/scsi/qla2xxx/qla_inline.h
+++ b/drivers/scsi/qla2xxx/qla_inline.h
@@ -225,11 +225,9 @@ static inline srb_t *
 qla2x00_get_sp(scsi_qla_host_t *vha, fc_port_t *fcport, gfp_t flag)
 {
 	srb_t *sp = NULL;
-	uint8_t bail;
 	struct qla_qpair *qpair;
 
-	QLA_VHA_MARK_BUSY(vha, bail);
-	if (unlikely(bail))
+	if (unlikely(qla_vha_mark_busy(vha)))
 		return NULL;
 
 	qpair = vha->hw->base_qpair;
diff --git a/drivers/scsi/qla2xxx/qla_os.c b/drivers/scsi/qla2xxx/qla_os.c
index 2c85f3cce726..7fb28c207ee5 100644
--- a/drivers/scsi/qla2xxx/qla_os.c
+++ b/drivers/scsi/qla2xxx/qla_os.c
@@ -3284,7 +3284,6 @@ qla2x00_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
 	    host->max_cmd_len, host->max_channel, host->max_lun,
 	    host->transportt, sht->vendor_id);
 
-	INIT_WORK(&base_vha->iocb_work, qla2x00_iocb_work_fn);
 	INIT_WORK(&ha->heartbeat_work, qla_heartbeat_work_fn);
 
 	/* Set up the irqs */
@@ -5069,13 +5068,11 @@ struct qla_work_evt *
 qla2x00_alloc_work(struct scsi_qla_host *vha, enum qla_work_type type)
 {
 	struct qla_work_evt *e;
-	uint8_t bail;
 
 	if (test_bit(UNLOADING, &vha->dpc_flags))
 		return NULL;
 
-	QLA_VHA_MARK_BUSY(vha, bail);
-	if (bail)
+	if (qla_vha_mark_busy(vha))
 		return NULL;
 
 	e = kzalloc(sizeof(struct qla_work_evt), GFP_ATOMIC);
diff --git a/drivers/scsi/qla2xxx/qla_target.c b/drivers/scsi/qla2xxx/qla_target.c
index bb754a950802..548f22705ddc 100644
--- a/drivers/scsi/qla2xxx/qla_target.c
+++ b/drivers/scsi/qla2xxx/qla_target.c
@@ -6741,6 +6741,9 @@ qlt_vport_create(struct scsi_qla_host *vha, struct qla_hw_data *ha)
 	mutex_init(&vha->vha_tgt.tgt_mutex);
 	mutex_init(&vha->vha_tgt.tgt_host_action_mutex);
 
+	INIT_LIST_HEAD(&vha->unknown_atio_list);
+	INIT_DELAYED_WORK(&vha->unknown_atio_work, qlt_unknown_atio_work_fn);
+
 	qlt_clear_mode(vha);
 
 	/*
diff --git a/drivers/scsi/qla4xxx/ql4_os.c b/drivers/scsi/qla4xxx/ql4_os.c
index 9e849f6b0d0f..005502125b27 100644
--- a/drivers/scsi/qla4xxx/ql4_os.c
+++ b/drivers/scsi/qla4xxx/ql4_os.c
@@ -116,7 +116,7 @@ static int qla4xxx_iface_set_param(struct Scsi_Host *shost, void *data,
 static int qla4xxx_get_iface_param(struct iscsi_iface *iface,
 				   enum iscsi_param_type param_type,
 				   int param, char *buf);
-static enum blk_eh_timer_return qla4xxx_eh_cmd_timed_out(struct scsi_cmnd *sc);
+static enum scsi_timeout_action qla4xxx_eh_cmd_timed_out(struct scsi_cmnd *sc);
 static struct iscsi_endpoint *qla4xxx_ep_connect(struct Scsi_Host *shost,
 						 struct sockaddr *dst_addr,
 						 int non_blocking);
@@ -1871,17 +1871,17 @@ exit_get_stats:
 	return;
 }
 
-static enum blk_eh_timer_return qla4xxx_eh_cmd_timed_out(struct scsi_cmnd *sc)
+static enum scsi_timeout_action qla4xxx_eh_cmd_timed_out(struct scsi_cmnd *sc)
 {
 	struct iscsi_cls_session *session;
 	unsigned long flags;
-	enum blk_eh_timer_return ret = BLK_EH_DONE;
+	enum scsi_timeout_action ret = SCSI_EH_NOT_HANDLED;
 
 	session = starget_to_session(scsi_target(sc->device));
 
 	spin_lock_irqsave(&session->lock, flags);
 	if (session->state == ISCSI_SESSION_FAILED)
-		ret = BLK_EH_RESET_TIMER;
+		ret = SCSI_EH_RESET_TIMER;
 	spin_unlock_irqrestore(&session->lock, flags);
 
 	return ret;
diff --git a/drivers/scsi/scsi.c b/drivers/scsi/scsi.c
index c59eac7a32f2..1426b9b03612 100644
--- a/drivers/scsi/scsi.c
+++ b/drivers/scsi/scsi.c
@@ -563,14 +563,14 @@ int scsi_device_get(struct scsi_device *sdev)
 {
 	if (sdev->sdev_state == SDEV_DEL || sdev->sdev_state == SDEV_CANCEL)
 		goto fail;
-	if (!get_device(&sdev->sdev_gendev))
-		goto fail;
 	if (!try_module_get(sdev->host->hostt->module))
-		goto fail_put_device;
+		goto fail;
+	if (!get_device(&sdev->sdev_gendev))
+		goto fail_put_module;
 	return 0;
 
-fail_put_device:
-	put_device(&sdev->sdev_gendev);
+fail_put_module:
+	module_put(sdev->host->hostt->module);
 fail:
 	return -ENXIO;
 }
@@ -588,6 +588,8 @@ void scsi_device_put(struct scsi_device *sdev)
 {
 	struct module *mod = sdev->host->hostt->module;
 
+	might_sleep();
+
 	put_device(&sdev->sdev_gendev);
 	module_put(mod);
 }
diff --git a/drivers/scsi/scsi_debug.c b/drivers/scsi/scsi_debug.c
index a0797101a8a0..cc6953809a24 100644
--- a/drivers/scsi/scsi_debug.c
+++ b/drivers/scsi/scsi_debug.c
@@ -3785,7 +3785,7 @@ static int resp_write_scat(struct scsi_cmnd *scp,
 		mk_sense_buffer(scp, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, 0);
 		return illegal_condition_result;
 	}
-	lrdp = kzalloc(lbdof_blen, GFP_ATOMIC);
+	lrdp = kzalloc(lbdof_blen, GFP_ATOMIC | __GFP_NOWARN);
 	if (lrdp == NULL)
 		return SCSI_MLQUEUE_HOST_BUSY;
 	if (sdebug_verbose)
@@ -4436,7 +4436,7 @@ static int resp_verify(struct scsi_cmnd *scp, struct sdebug_dev_info *devip)
 	if (ret)
 		return ret;
 
-	arr = kcalloc(lb_size, vnum, GFP_ATOMIC);
+	arr = kcalloc(lb_size, vnum, GFP_ATOMIC | __GFP_NOWARN);
 	if (!arr) {
 		mk_sense_buffer(scp, ILLEGAL_REQUEST, INSUFF_RES_ASC,
 				INSUFF_RES_ASCQ);
@@ -4504,7 +4504,7 @@ static int resp_report_zones(struct scsi_cmnd *scp,
 
 	rep_max_zones = (alloc_len - 64) >> ilog2(RZONES_DESC_HD);
 
-	arr = kzalloc(alloc_len, GFP_ATOMIC);
+	arr = kzalloc(alloc_len, GFP_ATOMIC | __GFP_NOWARN);
 	if (!arr) {
 		mk_sense_buffer(scp, ILLEGAL_REQUEST, INSUFF_RES_ASC,
 				INSUFF_RES_ASCQ);
@@ -7340,7 +7340,10 @@ clean:
 		kfree(sdbg_devinfo->zstate);
 		kfree(sdbg_devinfo);
 	}
-	kfree(sdbg_host);
+	if (sdbg_host->dev.release)
+		put_device(&sdbg_host->dev);
+	else
+		kfree(sdbg_host);
 	pr_warn("%s: failed, errno=%d\n", __func__, -error);
 	return error;
 }
diff --git a/drivers/scsi/scsi_error.c b/drivers/scsi/scsi_error.c
index ac5ff0783b4f..a7960ad2d386 100644
--- a/drivers/scsi/scsi_error.c
+++ b/drivers/scsi/scsi_error.c
@@ -328,7 +328,6 @@ void scsi_eh_scmd_add(struct scsi_cmnd *scmd)
 enum blk_eh_timer_return scsi_timeout(struct request *req)
 {
 	struct scsi_cmnd *scmd = blk_mq_rq_to_pdu(req);
-	enum blk_eh_timer_return rtn = BLK_EH_DONE;
 	struct Scsi_Host *host = scmd->device->host;
 
 	trace_scsi_dispatch_cmd_timeout(scmd);
@@ -338,31 +337,30 @@ enum blk_eh_timer_return scsi_timeout(struct request *req)
 	if (host->eh_deadline != -1 && !host->last_reset)
 		host->last_reset = jiffies;
 
-	if (host->hostt->eh_timed_out)
-		rtn = host->hostt->eh_timed_out(scmd);
-
-	if (rtn == BLK_EH_DONE) {
-		/*
-		 * Set the command to complete first in order to prevent a real
-		 * completion from releasing the command while error handling
-		 * is using it. If the command was already completed, then the
-		 * lower level driver beat the timeout handler, and it is safe
-		 * to return without escalating error recovery.
-		 *
-		 * If timeout handling lost the race to a real completion, the
-		 * block layer may ignore that due to a fake timeout injection,
-		 * so return RESET_TIMER to allow error handling another shot
-		 * at this command.
-		 */
-		if (test_and_set_bit(SCMD_STATE_COMPLETE, &scmd->state))
+	if (host->hostt->eh_timed_out) {
+		switch (host->hostt->eh_timed_out(scmd)) {
+		case SCSI_EH_DONE:
+			return BLK_EH_DONE;
+		case SCSI_EH_RESET_TIMER:
 			return BLK_EH_RESET_TIMER;
-		if (scsi_abort_command(scmd) != SUCCESS) {
-			set_host_byte(scmd, DID_TIME_OUT);
-			scsi_eh_scmd_add(scmd);
+		case SCSI_EH_NOT_HANDLED:
+			break;
 		}
 	}
 
-	return rtn;
+	/*
+	 * If scsi_done() has already set SCMD_STATE_COMPLETE, do not modify
+	 * *scmd.
+	 */
+	if (test_and_set_bit(SCMD_STATE_COMPLETE, &scmd->state))
+		return BLK_EH_DONE;
+	atomic_inc(&scmd->device->iodone_cnt);
+	if (scsi_abort_command(scmd) != SUCCESS) {
+		set_host_byte(scmd, DID_TIME_OUT);
+		scsi_eh_scmd_add(scmd);
+	}
+
+	return BLK_EH_DONE;
 }
 
 /**
diff --git a/drivers/scsi/scsi_ioctl.c b/drivers/scsi/scsi_ioctl.c
index 2d20da55fb64..fdd47565a311 100644
--- a/drivers/scsi/scsi_ioctl.c
+++ b/drivers/scsi/scsi_ioctl.c
@@ -519,7 +519,7 @@ static int sg_scsi_ioctl(struct request_queue *q, fmode_t mode,
 		return -EFAULT;
 	if (in_len > PAGE_SIZE || out_len > PAGE_SIZE)
 		return -EINVAL;
-	if (get_user(opcode, sic->data))
+	if (get_user(opcode, &sic->data[0]))
 		return -EFAULT;
 
 	bytes = max(in_len, out_len);
diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c
index 249757ddd8fe..9ed1ebcb7443 100644
--- a/drivers/scsi/scsi_lib.c
+++ b/drivers/scsi/scsi_lib.c
@@ -308,6 +308,18 @@ static void scsi_kick_queue(struct request_queue *q)
 }
 
 /*
+ * Kick the queue of SCSI device @sdev if @sdev != current_sdev. Called with
+ * interrupts disabled.
+ */
+static void scsi_kick_sdev_queue(struct scsi_device *sdev, void *data)
+{
+	struct scsi_device *current_sdev = data;
+
+	if (sdev != current_sdev)
+		blk_mq_run_hw_queues(sdev->request_queue, true);
+}
+
+/*
  * Called for single_lun devices on IO completion. Clear starget_sdev_user,
  * and call blk_run_queue for all the scsi_devices on the target -
  * including current_sdev first.
@@ -317,7 +329,6 @@ static void scsi_kick_queue(struct request_queue *q)
 static void scsi_single_lun_run(struct scsi_device *current_sdev)
 {
 	struct Scsi_Host *shost = current_sdev->host;
-	struct scsi_device *sdev, *tmp;
 	struct scsi_target *starget = scsi_target(current_sdev);
 	unsigned long flags;
 
@@ -334,22 +345,9 @@ static void scsi_single_lun_run(struct scsi_device *current_sdev)
 	scsi_kick_queue(current_sdev->request_queue);
 
 	spin_lock_irqsave(shost->host_lock, flags);
-	if (starget->starget_sdev_user)
-		goto out;
-	list_for_each_entry_safe(sdev, tmp, &starget->devices,
-			same_target_siblings) {
-		if (sdev == current_sdev)
-			continue;
-		if (scsi_device_get(sdev))
-			continue;
-
-		spin_unlock_irqrestore(shost->host_lock, flags);
-		scsi_kick_queue(sdev->request_queue);
-		spin_lock_irqsave(shost->host_lock, flags);
-
-		scsi_device_put(sdev);
-	}
- out:
+	if (!starget->starget_sdev_user)
+		__starget_for_each_device(starget, current_sdev,
+					  scsi_kick_sdev_queue);
 	spin_unlock_irqrestore(shost->host_lock, flags);
 }
 
@@ -1343,9 +1341,6 @@ static inline int scsi_host_queue_ready(struct request_queue *q,
 				   struct scsi_device *sdev,
 				   struct scsi_cmnd *cmd)
 {
-	if (scsi_host_in_recovery(shost))
-		return 0;
-
 	if (atomic_read(&shost->host_blocked) > 0) {
 		if (scsi_host_busy(shost) > 0)
 			goto starved;
@@ -1469,8 +1464,6 @@ static int scsi_dispatch_cmd(struct scsi_cmnd *cmd)
 	struct Scsi_Host *host = cmd->device->host;
 	int rtn = 0;
 
-	atomic_inc(&cmd->device->iorequest_cnt);
-
 	/* check if the device is still usable */
 	if (unlikely(cmd->device->sdev_state == SDEV_DEL)) {
 		/* in SDEV_DEL we error all commands. DID_NO_CONNECT
@@ -1734,6 +1727,11 @@ static blk_status_t scsi_queue_rq(struct blk_mq_hw_ctx *hctx,
 	ret = BLK_STS_RESOURCE;
 	if (!scsi_target_queue_ready(shost, sdev))
 		goto out_put_budget;
+	if (unlikely(scsi_host_in_recovery(shost))) {
+		if (cmd->flags & SCMD_FAIL_IF_RECOVERING)
+			ret = BLK_STS_OFFLINE;
+		goto out_dec_target_busy;
+	}
 	if (!scsi_host_queue_ready(q, shost, sdev, cmd))
 		goto out_dec_target_busy;
 
@@ -1764,6 +1762,7 @@ static blk_status_t scsi_queue_rq(struct blk_mq_hw_ctx *hctx,
 		goto out_dec_host_busy;
 	}
 
+	atomic_inc(&cmd->device->iorequest_cnt);
 	return BLK_STS_OK;
 
 out_dec_host_busy:
diff --git a/drivers/scsi/scsi_priv.h b/drivers/scsi/scsi_priv.h
index c52de9a973e4..96284a0e13fe 100644
--- a/drivers/scsi/scsi_priv.h
+++ b/drivers/scsi/scsi_priv.h
@@ -111,14 +111,14 @@ extern void scsi_evt_thread(struct work_struct *work);
 
 /* scsi_proc.c */
 #ifdef CONFIG_SCSI_PROC_FS
-extern void scsi_proc_hostdir_add(struct scsi_host_template *);
-extern void scsi_proc_hostdir_rm(struct scsi_host_template *);
+extern int scsi_proc_hostdir_add(const struct scsi_host_template *);
+extern void scsi_proc_hostdir_rm(const struct scsi_host_template *);
 extern void scsi_proc_host_add(struct Scsi_Host *);
 extern void scsi_proc_host_rm(struct Scsi_Host *);
 extern int scsi_init_procfs(void);
 extern void scsi_exit_procfs(void);
 #else
-# define scsi_proc_hostdir_add(sht)	do { } while (0)
+# define scsi_proc_hostdir_add(sht)	0
 # define scsi_proc_hostdir_rm(sht)	do { } while (0)
 # define scsi_proc_host_add(shost)	do { } while (0)
 # define scsi_proc_host_rm(shost)	do { } while (0)
diff --git a/drivers/scsi/scsi_proc.c b/drivers/scsi/scsi_proc.c
index 95aee1ad1383..4a6eb1741be0 100644
--- a/drivers/scsi/scsi_proc.c
+++ b/drivers/scsi/scsi_proc.c
@@ -43,8 +43,23 @@
 
 static struct proc_dir_entry *proc_scsi;
 
-/* Protect sht->present and sht->proc_dir */
+/* Protects scsi_proc_list */
 static DEFINE_MUTEX(global_host_template_mutex);
+static LIST_HEAD(scsi_proc_list);
+
+/**
+ * struct scsi_proc_entry - (host template, SCSI proc dir) association
+ * @entry: entry in scsi_proc_list.
+ * @sht: SCSI host template associated with the procfs directory.
+ * @proc_dir: procfs directory associated with the SCSI host template.
+ * @present: Number of SCSI hosts instantiated for @sht.
+ */
+struct scsi_proc_entry {
+	struct list_head	entry;
+	const struct scsi_host_template *sht;
+	struct proc_dir_entry	*proc_dir;
+	unsigned int		present;
+};
 
 static ssize_t proc_scsi_host_write(struct file *file, const char __user *buf,
                            size_t count, loff_t *ppos)
@@ -83,6 +98,45 @@ static int proc_scsi_host_open(struct inode *inode, struct file *file)
 				4 * PAGE_SIZE);
 }
 
+static struct scsi_proc_entry *
+__scsi_lookup_proc_entry(const struct scsi_host_template *sht)
+{
+	struct scsi_proc_entry *e;
+
+	lockdep_assert_held(&global_host_template_mutex);
+
+	list_for_each_entry(e, &scsi_proc_list, entry)
+		if (e->sht == sht)
+			return e;
+
+	return NULL;
+}
+
+static struct scsi_proc_entry *
+scsi_lookup_proc_entry(const struct scsi_host_template *sht)
+{
+	struct scsi_proc_entry *e;
+
+	mutex_lock(&global_host_template_mutex);
+	e = __scsi_lookup_proc_entry(sht);
+	mutex_unlock(&global_host_template_mutex);
+
+	return e;
+}
+
+/**
+ * scsi_template_proc_dir() - returns the procfs dir for a SCSI host template
+ * @sht: SCSI host template pointer.
+ */
+struct proc_dir_entry *
+scsi_template_proc_dir(const struct scsi_host_template *sht)
+{
+	struct scsi_proc_entry *e = scsi_lookup_proc_entry(sht);
+
+	return e ? e->proc_dir : NULL;
+}
+EXPORT_SYMBOL_GPL(scsi_template_proc_dir);
+
 static const struct proc_ops proc_scsi_ops = {
 	.proc_open	= proc_scsi_host_open,
 	.proc_release	= single_release,
@@ -97,35 +151,61 @@ static const struct proc_ops proc_scsi_ops = {
  *
  * Sets sht->proc_dir to the new directory.
  */
-
-void scsi_proc_hostdir_add(struct scsi_host_template *sht)
+int scsi_proc_hostdir_add(const struct scsi_host_template *sht)
 {
+	struct scsi_proc_entry *e;
+	int ret;
+
 	if (!sht->show_info)
-		return;
+		return 0;
 
 	mutex_lock(&global_host_template_mutex);
-	if (!sht->present++) {
-		sht->proc_dir = proc_mkdir(sht->proc_name, proc_scsi);
-        	if (!sht->proc_dir)
-			printk(KERN_ERR "%s: proc_mkdir failed for %s\n",
-			       __func__, sht->proc_name);
+	e = __scsi_lookup_proc_entry(sht);
+	if (!e) {
+		e = kzalloc(sizeof(*e), GFP_KERNEL);
+		if (!e) {
+			ret = -ENOMEM;
+			goto unlock;
+		}
 	}
+	if (e->present++)
+		goto success;
+	e->proc_dir = proc_mkdir(sht->proc_name, proc_scsi);
+	if (!e->proc_dir) {
+		printk(KERN_ERR "%s: proc_mkdir failed for %s\n", __func__,
+		       sht->proc_name);
+		ret = -ENOMEM;
+		goto unlock;
+	}
+	e->sht = sht;
+	list_add_tail(&e->entry, &scsi_proc_list);
+success:
+	e = NULL;
+	ret = 0;
+unlock:
 	mutex_unlock(&global_host_template_mutex);
+
+	kfree(e);
+	return ret;
 }
 
 /**
  * scsi_proc_hostdir_rm - remove directory in /proc for a scsi host
  * @sht: owner of directory
  */
-void scsi_proc_hostdir_rm(struct scsi_host_template *sht)
+void scsi_proc_hostdir_rm(const struct scsi_host_template *sht)
 {
+	struct scsi_proc_entry *e;
+
 	if (!sht->show_info)
 		return;
 
 	mutex_lock(&global_host_template_mutex);
-	if (!--sht->present && sht->proc_dir) {
+	e = __scsi_lookup_proc_entry(sht);
+	if (e && !--e->present) {
 		remove_proc_entry(sht->proc_name, proc_scsi);
-		sht->proc_dir = NULL;
+		list_del(&e->entry);
+		kfree(e);
 	}
 	mutex_unlock(&global_host_template_mutex);
 }
@@ -137,20 +217,29 @@ void scsi_proc_hostdir_rm(struct scsi_host_template *sht)
  */
 void scsi_proc_host_add(struct Scsi_Host *shost)
 {
-	struct scsi_host_template *sht = shost->hostt;
+	const struct scsi_host_template *sht = shost->hostt;
+	struct scsi_proc_entry *e;
 	struct proc_dir_entry *p;
 	char name[10];
 
-	if (!sht->proc_dir)
+	if (!sht->show_info)
 		return;
 
+	e = scsi_lookup_proc_entry(sht);
+	if (!e)
+		goto err;
+
 	sprintf(name,"%d", shost->host_no);
-	p = proc_create_data(name, S_IRUGO | S_IWUSR,
-		sht->proc_dir, &proc_scsi_ops, shost);
+	p = proc_create_data(name, S_IRUGO | S_IWUSR, e->proc_dir,
+			     &proc_scsi_ops, shost);
 	if (!p)
-		printk(KERN_ERR "%s: Failed to register host %d in"
-		       "%s\n", __func__, shost->host_no,
-		       sht->proc_name);
+		goto err;
+	return;
+
+err:
+	shost_printk(KERN_ERR, shost,
+		     "%s: Failed to register host (%s failed)\n", __func__,
+		     e ? "proc_create_data()" : "scsi_proc_hostdir_add()");
 }
 
 /**
@@ -159,13 +248,19 @@ void scsi_proc_host_add(struct Scsi_Host *shost)
  */
 void scsi_proc_host_rm(struct Scsi_Host *shost)
 {
+	const struct scsi_host_template *sht = shost->hostt;
+	struct scsi_proc_entry *e;
 	char name[10];
 
-	if (!shost->hostt->proc_dir)
+	if (!sht->show_info)
+		return;
+
+	e = scsi_lookup_proc_entry(sht);
+	if (!e)
 		return;
 
 	sprintf(name,"%d", shost->host_no);
-	remove_proc_entry(name, shost->hostt->proc_dir);
+	remove_proc_entry(name, e->proc_dir);
 }
 /**
  * proc_print_scsidevice - return data about this host
diff --git a/drivers/scsi/scsi_scan.c b/drivers/scsi/scsi_scan.c
index 0a95fa787fdf..7a6904a3928e 100644
--- a/drivers/scsi/scsi_scan.c
+++ b/drivers/scsi/scsi_scan.c
@@ -1579,7 +1579,8 @@ struct scsi_device *__scsi_add_device(struct Scsi_Host *shost, uint channel,
 		scsi_complete_async_scans();
 
 	if (scsi_host_scan_allowed(shost) && scsi_autopm_get_host(shost) == 0) {
-		scsi_probe_and_add_lun(starget, lun, NULL, &sdev, 1, hostdata);
+		scsi_probe_and_add_lun(starget, lun, NULL, &sdev,
+				       SCSI_SCAN_RESCAN, hostdata);
 		scsi_autopm_put_host(shost);
 	}
 	mutex_unlock(&shost->scan_mutex);
@@ -1918,7 +1919,7 @@ static void do_scsi_scan_host(struct Scsi_Host *shost)
 			msleep(10);
 	} else {
 		scsi_scan_host_selected(shost, SCAN_WILD_CARD, SCAN_WILD_CARD,
-				SCAN_WILD_CARD, 0);
+				SCAN_WILD_CARD, SCSI_SCAN_INITIAL);
 	}
 }
 
diff --git a/drivers/scsi/scsi_sysfs.c b/drivers/scsi/scsi_sysfs.c
index cac7c902cf70..981d1bab2120 100644
--- a/drivers/scsi/scsi_sysfs.c
+++ b/drivers/scsi/scsi_sysfs.c
@@ -441,20 +441,15 @@ static void scsi_device_cls_release(struct device *class_dev)
 	put_device(&sdev->sdev_gendev);
 }
 
-static void scsi_device_dev_release_usercontext(struct work_struct *work)
+static void scsi_device_dev_release(struct device *dev)
 {
-	struct scsi_device *sdev;
+	struct scsi_device *sdev = to_scsi_device(dev);
 	struct device *parent;
 	struct list_head *this, *tmp;
 	struct scsi_vpd *vpd_pg80 = NULL, *vpd_pg83 = NULL;
 	struct scsi_vpd *vpd_pg0 = NULL, *vpd_pg89 = NULL;
 	struct scsi_vpd *vpd_pgb0 = NULL, *vpd_pgb1 = NULL, *vpd_pgb2 = NULL;
 	unsigned long flags;
-	struct module *mod;
-
-	sdev = container_of(work, struct scsi_device, ew.work);
-
-	mod = sdev->host->hostt->module;
 
 	scsi_dh_release_device(sdev);
 
@@ -518,19 +513,6 @@ static void scsi_device_dev_release_usercontext(struct work_struct *work)
 
 	if (parent)
 		put_device(parent);
-	module_put(mod);
-}
-
-static void scsi_device_dev_release(struct device *dev)
-{
-	struct scsi_device *sdp = to_scsi_device(dev);
-
-	/* Set module pointer as NULL in case of module unloading */
-	if (!try_module_get(sdp->host->hostt->module))
-		sdp->host->hostt->module = NULL;
-
-	execute_in_process_context(scsi_device_dev_release_usercontext,
-				   &sdp->ew);
 }
 
 static struct class sdev_class = {
diff --git a/drivers/scsi/scsi_transport_fc.c b/drivers/scsi/scsi_transport_fc.c
index 8934160c4a33..0965f8a7134f 100644
--- a/drivers/scsi/scsi_transport_fc.c
+++ b/drivers/scsi/scsi_transport_fc.c
@@ -2530,15 +2530,14 @@ static int fc_vport_match(struct attribute_container *cont,
  * Notes:
  *	This routine assumes no locks are held on entry.
  */
-enum blk_eh_timer_return
-fc_eh_timed_out(struct scsi_cmnd *scmd)
+enum scsi_timeout_action fc_eh_timed_out(struct scsi_cmnd *scmd)
 {
 	struct fc_rport *rport = starget_to_rport(scsi_target(scmd->device));
 
 	if (rport->port_state == FC_PORTSTATE_BLOCKED)
-		return BLK_EH_RESET_TIMER;
+		return SCSI_EH_RESET_TIMER;
 
-	return BLK_EH_DONE;
+	return SCSI_EH_NOT_HANDLED;
 }
 EXPORT_SYMBOL(fc_eh_timed_out);
 
diff --git a/drivers/scsi/scsi_transport_iscsi.c b/drivers/scsi/scsi_transport_iscsi.c
index f473c002fa4d..13cfd3e317cc 100644
--- a/drivers/scsi/scsi_transport_iscsi.c
+++ b/drivers/scsi/scsi_transport_iscsi.c
@@ -2989,7 +2989,7 @@ iscsi_if_destroy_conn(struct iscsi_transport *transport, struct iscsi_uevent *ev
 }
 
 static int
-iscsi_set_param(struct iscsi_transport *transport, struct iscsi_uevent *ev)
+iscsi_if_set_param(struct iscsi_transport *transport, struct iscsi_uevent *ev)
 {
 	char *data = (char*)ev + sizeof(*ev);
 	struct iscsi_cls_conn *conn;
@@ -3942,7 +3942,7 @@ iscsi_if_recv_msg(struct sk_buff *skb, struct nlmsghdr *nlh, uint32_t *group)
 			err = -EINVAL;
 		break;
 	case ISCSI_UEVENT_SET_PARAM:
-		err = iscsi_set_param(transport, ev);
+		err = iscsi_if_set_param(transport, ev);
 		break;
 	case ISCSI_UEVENT_CREATE_CONN:
 	case ISCSI_UEVENT_DESTROY_CONN:
diff --git a/drivers/scsi/scsi_transport_srp.c b/drivers/scsi/scsi_transport_srp.c
index 98a34ed10f1a..87d0fb8dc503 100644
--- a/drivers/scsi/scsi_transport_srp.c
+++ b/drivers/scsi/scsi_transport_srp.c
@@ -594,13 +594,13 @@ EXPORT_SYMBOL(srp_reconnect_rport);
  * @scmd: SCSI command.
  *
  * If a timeout occurs while an rport is in the blocked state, ask the SCSI
- * EH to continue waiting (BLK_EH_RESET_TIMER). Otherwise let the SCSI core
- * handle the timeout (BLK_EH_DONE).
+ * EH to continue waiting (SCSI_EH_RESET_TIMER). Otherwise let the SCSI core
+ * handle the timeout (SCSI_EH_NOT_HANDLED).
  *
  * Note: This function is called from soft-IRQ context and with the request
  * queue lock held.
  */
-enum blk_eh_timer_return srp_timed_out(struct scsi_cmnd *scmd)
+enum scsi_timeout_action srp_timed_out(struct scsi_cmnd *scmd)
 {
 	struct scsi_device *sdev = scmd->device;
 	struct Scsi_Host *shost = sdev->host;
@@ -611,7 +611,7 @@ enum blk_eh_timer_return srp_timed_out(struct scsi_cmnd *scmd)
 	return rport && rport->fast_io_fail_tmo < 0 &&
 		rport->dev_loss_tmo < 0 &&
 		i->f->reset_timer_if_blocked && scsi_device_blocked(sdev) ?
-		BLK_EH_RESET_TIMER : BLK_EH_DONE;
+		SCSI_EH_RESET_TIMER : SCSI_EH_NOT_HANDLED;
 }
 EXPORT_SYMBOL(srp_timed_out);
 
diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c
index eb76ba055021..faa2b55d1a21 100644
--- a/drivers/scsi/sd.c
+++ b/drivers/scsi/sd.c
@@ -1026,8 +1026,13 @@ static blk_status_t sd_setup_flush_cmnd(struct scsi_cmnd *cmd)
 	/* flush requests don't perform I/O, zero the S/G table */
 	memset(&cmd->sdb, 0, sizeof(cmd->sdb));
 
-	cmd->cmnd[0] = SYNCHRONIZE_CACHE;
-	cmd->cmd_len = 10;
+	if (cmd->device->use_16_for_sync) {
+		cmd->cmnd[0] = SYNCHRONIZE_CACHE_16;
+		cmd->cmd_len = 16;
+	} else {
+		cmd->cmnd[0] = SYNCHRONIZE_CACHE;
+		cmd->cmd_len = 10;
+	}
 	cmd->transfersize = 0;
 	cmd->allowed = sdkp->max_retries;
 
@@ -1587,9 +1592,12 @@ static int sd_sync_cache(struct scsi_disk *sdkp, struct scsi_sense_hdr *sshdr)
 		sshdr = &my_sshdr;
 
 	for (retries = 3; retries > 0; --retries) {
-		unsigned char cmd[10] = { 0 };
+		unsigned char cmd[16] = { 0 };
 
-		cmd[0] = SYNCHRONIZE_CACHE;
+		if (sdp->use_16_for_sync)
+			cmd[0] = SYNCHRONIZE_CACHE_16;
+		else
+			cmd[0] = SYNCHRONIZE_CACHE;
 		/*
 		 * Leave the rest of the command zero to indicate
 		 * flush everything.
diff --git a/drivers/scsi/sd_zbc.c b/drivers/scsi/sd_zbc.c
index bd15624c6322..b163bf936acc 100644
--- a/drivers/scsi/sd_zbc.c
+++ b/drivers/scsi/sd_zbc.c
@@ -921,9 +921,10 @@ int sd_zbc_read_zones(struct scsi_disk *sdkp, u8 buf[SD_BUF_SIZE])
 		return 0;
 	}
 
-	/* READ16/WRITE16 is mandatory for ZBC disks */
+	/* READ16/WRITE16/SYNC16 is mandatory for ZBC devices */
 	sdkp->device->use_16_for_rw = 1;
 	sdkp->device->use_10_for_rw = 0;
+	sdkp->device->use_16_for_sync = 1;
 
 	if (!blk_queue_is_zoned(q)) {
 		/*
diff --git a/drivers/scsi/smartpqi/smartpqi.h b/drivers/scsi/smartpqi/smartpqi.h
index e550b12e525a..af27bb0f3133 100644
--- a/drivers/scsi/smartpqi/smartpqi.h
+++ b/drivers/scsi/smartpqi/smartpqi.h
@@ -1130,7 +1130,7 @@ struct pqi_scsi_dev {
 	u8	phy_id;
 	u8	ncq_prio_enable;
 	u8	ncq_prio_support;
-	u8	multi_lun_device_lun_count;
+	u8	lun_count;
 	bool	raid_bypass_configured;	/* RAID bypass configured */
 	bool	raid_bypass_enabled;	/* RAID bypass enabled */
 	u32	next_bypass_group[RAID_MAP_MAX_DATA_DISKS_PER_ROW];
@@ -1307,7 +1307,6 @@ struct pqi_ctrl_info {
 	dma_addr_t	error_buffer_dma_handle;
 	size_t		sg_chain_buffer_length;
 	unsigned int	num_queue_groups;
-	u16		max_hw_queue_index;
 	u16		num_elements_per_iq;
 	u16		num_elements_per_oq;
 	u16		max_inbound_iu_length_per_firmware;
@@ -1369,8 +1368,6 @@ struct pqi_ctrl_info {
 	u64		sas_address;
 
 	struct pqi_io_request *io_request_pool;
-	u16		next_io_request_slot;
-
 	struct pqi_event events[PQI_NUM_SUPPORTED_EVENTS];
 	struct work_struct event_work;
 
diff --git a/drivers/scsi/smartpqi/smartpqi_init.c b/drivers/scsi/smartpqi/smartpqi_init.c
index b971fbe3b3a1..d0446d4d4465 100644
--- a/drivers/scsi/smartpqi/smartpqi_init.c
+++ b/drivers/scsi/smartpqi/smartpqi_init.c
@@ -33,11 +33,11 @@
 #define BUILD_TIMESTAMP
 #endif
 
-#define DRIVER_VERSION		"2.1.18-045"
+#define DRIVER_VERSION		"2.1.20-035"
 #define DRIVER_MAJOR		2
 #define DRIVER_MINOR		1
-#define DRIVER_RELEASE		18
-#define DRIVER_REVISION		45
+#define DRIVER_RELEASE		20
+#define DRIVER_REVISION		35
 
 #define DRIVER_NAME		"Microchip SmartPQI Driver (v" \
 				DRIVER_VERSION BUILD_TIMESTAMP ")"
@@ -678,23 +678,36 @@ static inline void pqi_reinit_io_request(struct pqi_io_request *io_request)
 	io_request->raid_bypass = false;
 }
 
-static struct pqi_io_request *pqi_alloc_io_request(
-	struct pqi_ctrl_info *ctrl_info)
+static inline struct pqi_io_request *pqi_alloc_io_request(struct pqi_ctrl_info *ctrl_info, struct scsi_cmnd *scmd)
 {
 	struct pqi_io_request *io_request;
-	u16 i = ctrl_info->next_io_request_slot;	/* benignly racy */
+	u16 i;
 
-	while (1) {
+	if (scmd) { /* SML I/O request */
+		u32 blk_tag = blk_mq_unique_tag(scsi_cmd_to_rq(scmd));
+
+		i = blk_mq_unique_tag_to_tag(blk_tag);
 		io_request = &ctrl_info->io_request_pool[i];
-		if (atomic_inc_return(&io_request->refcount) == 1)
-			break;
-		atomic_dec(&io_request->refcount);
-		i = (i + 1) % ctrl_info->max_io_slots;
+		if (atomic_inc_return(&io_request->refcount) > 1) {
+			atomic_dec(&io_request->refcount);
+			return NULL;
+		}
+	} else { /* IOCTL or driver internal request */
+		/*
+		 * benignly racy - may have to wait for an open slot.
+		 * command slot range is scsi_ml_can_queue -
+		 *         [scsi_ml_can_queue + (PQI_RESERVED_IO_SLOTS - 1)]
+		 */
+		i = 0;
+		while (1) {
+			io_request = &ctrl_info->io_request_pool[ctrl_info->scsi_ml_can_queue + i];
+			if (atomic_inc_return(&io_request->refcount) == 1)
+				break;
+			atomic_dec(&io_request->refcount);
+			i = (i + 1) % PQI_RESERVED_IO_SLOTS;
+		}
 	}
 
-	/* benignly racy */
-	ctrl_info->next_io_request_slot = (i + 1) % ctrl_info->max_io_slots;
-
 	pqi_reinit_io_request(io_request);
 
 	return io_request;
@@ -1610,9 +1623,7 @@ static int pqi_get_physical_device_info(struct pqi_ctrl_info *ctrl_info,
 		&id_phys->alternate_paths_phys_connector,
 		sizeof(device->phys_connector));
 	device->bay = id_phys->phys_bay_in_box;
-	device->multi_lun_device_lun_count = id_phys->multi_lun_device_lun_count;
-	if (!device->multi_lun_device_lun_count)
-		device->multi_lun_device_lun_count = 1;
+	device->lun_count = id_phys->multi_lun_device_lun_count;
 	if ((id_phys->even_more_flags & PQI_DEVICE_PHY_MAP_SUPPORTED) &&
 		id_phys->phy_count)
 		device->phy_id =
@@ -1746,7 +1757,7 @@ out:
 	return offline;
 }
 
-static int pqi_get_device_info(struct pqi_ctrl_info *ctrl_info,
+static int pqi_get_device_info_phys_logical(struct pqi_ctrl_info *ctrl_info,
 	struct pqi_scsi_dev *device,
 	struct bmic_identify_physical_device *id_phys)
 {
@@ -1763,6 +1774,20 @@ static int pqi_get_device_info(struct pqi_ctrl_info *ctrl_info,
 	return rc;
 }
 
+static int pqi_get_device_info(struct pqi_ctrl_info *ctrl_info,
+	struct pqi_scsi_dev *device,
+	struct bmic_identify_physical_device *id_phys)
+{
+	int rc;
+
+	rc = pqi_get_device_info_phys_logical(ctrl_info, device, id_phys);
+
+	if (rc == 0 && device->lun_count == 0)
+		device->lun_count = 1;
+
+	return rc;
+}
+
 static void pqi_show_volume_status(struct pqi_ctrl_info *ctrl_info,
 	struct pqi_scsi_dev *device)
 {
@@ -1897,7 +1922,7 @@ static inline void pqi_remove_device(struct pqi_ctrl_info *ctrl_info, struct pqi
 	int rc;
 	int lun;
 
-	for (lun = 0; lun < device->multi_lun_device_lun_count; lun++) {
+	for (lun = 0; lun < device->lun_count; lun++) {
 		rc = pqi_device_wait_for_pending_io(ctrl_info, device, lun,
 			PQI_REMOVE_DEVICE_PENDING_IO_TIMEOUT_MSECS);
 		if (rc)
@@ -2076,6 +2101,7 @@ static void pqi_scsi_update_device(struct pqi_ctrl_info *ctrl_info,
 	existing_device->sas_address = new_device->sas_address;
 	existing_device->queue_depth = new_device->queue_depth;
 	existing_device->device_offline = false;
+	existing_device->lun_count = new_device->lun_count;
 
 	if (pqi_is_logical_device(existing_device)) {
 		existing_device->is_external_raid_device = new_device->is_external_raid_device;
@@ -2108,10 +2134,6 @@ static void pqi_scsi_update_device(struct pqi_ctrl_info *ctrl_info,
 		existing_device->phy_connected_dev_type = new_device->phy_connected_dev_type;
 		memcpy(existing_device->box, new_device->box, sizeof(existing_device->box));
 		memcpy(existing_device->phys_connector, new_device->phys_connector, sizeof(existing_device->phys_connector));
-
-		existing_device->multi_lun_device_lun_count = new_device->multi_lun_device_lun_count;
-		if (existing_device->multi_lun_device_lun_count == 0)
-			existing_device->multi_lun_device_lun_count = 1;
 	}
 }
 
@@ -4586,7 +4608,7 @@ static int pqi_submit_raid_request_synchronous(struct pqi_ctrl_info *ctrl_info,
 		goto out;
 	}
 
-	io_request = pqi_alloc_io_request(ctrl_info);
+	io_request = pqi_alloc_io_request(ctrl_info, NULL);
 
 	put_unaligned_le16(io_request->index,
 		&(((struct pqi_raid_path_request *)request)->request_id));
@@ -5233,7 +5255,6 @@ static void pqi_calculate_queue_resources(struct pqi_ctrl_info *ctrl_info)
 	}
 
 	ctrl_info->num_queue_groups = num_queue_groups;
-	ctrl_info->max_hw_queue_index = num_queue_groups - 1;
 
 	/*
 	 * Make sure that the max. inbound IU length is an even multiple
@@ -5567,7 +5588,9 @@ static inline int pqi_raid_submit_scsi_cmd(struct pqi_ctrl_info *ctrl_info,
 {
 	struct pqi_io_request *io_request;
 
-	io_request = pqi_alloc_io_request(ctrl_info);
+	io_request = pqi_alloc_io_request(ctrl_info, scmd);
+	if (!io_request)
+		return SCSI_MLQUEUE_HOST_BUSY;
 
 	return pqi_raid_submit_scsi_cmd_with_io_request(ctrl_info, io_request,
 		device, scmd, queue_group);
@@ -5671,7 +5694,9 @@ static int pqi_aio_submit_io(struct pqi_ctrl_info *ctrl_info,
 	struct pqi_scsi_dev *device;
 
 	device = scmd->device->hostdata;
-	io_request = pqi_alloc_io_request(ctrl_info);
+	io_request = pqi_alloc_io_request(ctrl_info, scmd);
+	if (!io_request)
+		return SCSI_MLQUEUE_HOST_BUSY;
 	io_request->io_complete_callback = pqi_aio_io_complete;
 	io_request->scmd = scmd;
 	io_request->raid_bypass = raid_bypass;
@@ -5743,7 +5768,10 @@ static  int pqi_aio_submit_r1_write_io(struct pqi_ctrl_info *ctrl_info,
 	struct pqi_io_request *io_request;
 	struct pqi_aio_r1_path_request *r1_request;
 
-	io_request = pqi_alloc_io_request(ctrl_info);
+	io_request = pqi_alloc_io_request(ctrl_info, scmd);
+	if (!io_request)
+		return SCSI_MLQUEUE_HOST_BUSY;
+
 	io_request->io_complete_callback = pqi_aio_io_complete;
 	io_request->scmd = scmd;
 	io_request->raid_bypass = true;
@@ -5801,7 +5829,9 @@ static int pqi_aio_submit_r56_write_io(struct pqi_ctrl_info *ctrl_info,
 	struct pqi_io_request *io_request;
 	struct pqi_aio_r56_path_request *r56_request;
 
-	io_request = pqi_alloc_io_request(ctrl_info);
+	io_request = pqi_alloc_io_request(ctrl_info, scmd);
+	if (!io_request)
+		return SCSI_MLQUEUE_HOST_BUSY;
 	io_request->io_complete_callback = pqi_aio_io_complete;
 	io_request->scmd = scmd;
 	io_request->raid_bypass = true;
@@ -5860,13 +5890,10 @@ static int pqi_aio_submit_r56_write_io(struct pqi_ctrl_info *ctrl_info,
 static inline u16 pqi_get_hw_queue(struct pqi_ctrl_info *ctrl_info,
 	struct scsi_cmnd *scmd)
 {
-	u16 hw_queue;
-
-	hw_queue = blk_mq_unique_tag_to_hwq(blk_mq_unique_tag(scsi_cmd_to_rq(scmd)));
-	if (hw_queue > ctrl_info->max_hw_queue_index)
-		hw_queue = 0;
-
-	return hw_queue;
+	/*
+	 * We are setting host_tagset = 1 during init.
+	 */
+	return blk_mq_unique_tag_to_hwq(blk_mq_unique_tag(scsi_cmd_to_rq(scmd)));
 }
 
 static inline bool pqi_is_bypass_eligible_request(struct scsi_cmnd *scmd)
@@ -6268,7 +6295,7 @@ static int pqi_lun_reset(struct pqi_ctrl_info *ctrl_info, struct scsi_cmnd *scmd
 	struct pqi_scsi_dev *device;
 
 	device = scmd->device->hostdata;
-	io_request = pqi_alloc_io_request(ctrl_info);
+	io_request = pqi_alloc_io_request(ctrl_info, NULL);
 	io_request->io_complete_callback = pqi_lun_reset_complete;
 	io_request->context = &wait;
 
@@ -6484,6 +6511,12 @@ static void pqi_slave_destroy(struct scsi_device *sdev)
 		return;
 	}
 
+	device->lun_count--;
+	if (device->lun_count > 0) {
+		mutex_unlock(&ctrl_info->scan_mutex);
+		return;
+	}
+
 	spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
 	list_del(&device->scsi_device_list_entry);
 	spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
@@ -7237,7 +7270,7 @@ static ssize_t pqi_raid_level_show(struct device *dev,
 		return -ENODEV;
 	}
 
-	if (pqi_is_logical_device(device))
+	if (pqi_is_logical_device(device) && device->devtype == TYPE_DISK)
 		raid_level = pqi_raid_level_to_string(device->raid_level);
 	else
 		raid_level = "N/A";
@@ -7405,7 +7438,6 @@ static int pqi_register_scsi(struct pqi_ctrl_info *ctrl_info)
 	shost->max_channel = PQI_MAX_BUS;
 	shost->max_cmd_len = MAX_COMMAND_SIZE;
 	shost->max_lun = PQI_MAX_LUNS_PER_DEVICE;
-	shost->max_lun = ~0;
 	shost->max_id = ~0;
 	shost->max_sectors = ctrl_info->max_sectors;
 	shost->can_queue = ctrl_info->scsi_ml_can_queue;
@@ -7972,7 +8004,7 @@ static int pqi_process_config_table(struct pqi_ctrl_info *ctrl_info)
 	struct pqi_config_table *config_table;
 	struct pqi_config_table_section_header *section;
 	struct pqi_config_table_section_info section_info;
-	struct pqi_config_table_section_info feature_section_info;
+	struct pqi_config_table_section_info feature_section_info = {0};
 
 	table_length = ctrl_info->config_table_length;
 	if (table_length == 0)
@@ -9008,6 +9040,7 @@ static void pqi_pci_remove(struct pci_dev *pci_dev)
 {
 	struct pqi_ctrl_info *ctrl_info;
 	u16 vendor_id;
+	int rc;
 
 	ctrl_info = pci_get_drvdata(pci_dev);
 	if (!ctrl_info)
@@ -9019,6 +9052,13 @@ static void pqi_pci_remove(struct pci_dev *pci_dev)
 	else
 		ctrl_info->ctrl_removal_state = PQI_CTRL_GRACEFUL_REMOVAL;
 
+	if (ctrl_info->ctrl_removal_state == PQI_CTRL_GRACEFUL_REMOVAL) {
+		rc = pqi_flush_cache(ctrl_info, RESTART);
+		if (rc)
+			dev_err(&pci_dev->dev,
+				"unable to flush controller cache during remove\n");
+	}
+
 	pqi_remove_ctrl(ctrl_info);
 }
 
@@ -9304,6 +9344,10 @@ static const struct pci_device_id pqi_pci_id_table[] = {
 	},
 	{
 		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
+			       0x193d, 0x110b)
+	},
+	{
+		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 			       0x193d, 0x8460)
 	},
 	{
@@ -9404,6 +9448,22 @@ static const struct pci_device_id pqi_pci_id_table[] = {
 	},
 	{
 		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
+			       0x1bd4, 0x0086)
+	},
+	{
+		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
+			       0x1bd4, 0x0087)
+	},
+	{
+		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
+			       0x1bd4, 0x0088)
+	},
+	{
+		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
+			       0x1bd4, 0x0089)
+	},
+	{
+		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 			       0x19e5, 0xd227)
 	},
 	{
@@ -9652,6 +9712,10 @@ static const struct pci_device_id pqi_pci_id_table[] = {
 	},
 	{
 		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
+			       PCI_VENDOR_ID_ADAPTEC2, 0x1475)
+	},
+	{
+		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 			       PCI_VENDOR_ID_ADAPTEC2, 0x1480)
 	},
 	{
@@ -9708,6 +9772,14 @@ static const struct pci_device_id pqi_pci_id_table[] = {
 	},
 	{
 		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
+			       PCI_VENDOR_ID_ADAPTEC2, 0x14c3)
+	},
+	{
+		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
+			       PCI_VENDOR_ID_ADAPTEC2, 0x14c4)
+	},
+	{
+		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 			       PCI_VENDOR_ID_ADAPTEC2, 0x14d0)
 	},
 	{
@@ -9944,6 +10016,18 @@ static const struct pci_device_id pqi_pci_id_table[] = {
 	},
 	{
 		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
+				0x1e93, 0x1000)
+	},
+	{
+		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
+				0x1e93, 0x1001)
+	},
+	{
+		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
+				0x1e93, 0x1002)
+	},
+	{
+		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 			       PCI_ANY_ID, PCI_ANY_ID)
 	},
 	{ 0 }
diff --git a/drivers/scsi/snic/snic_disc.c b/drivers/scsi/snic/snic_disc.c
index 9b2b5f8c23b9..8fbf3c1b1311 100644
--- a/drivers/scsi/snic/snic_disc.c
+++ b/drivers/scsi/snic/snic_disc.c
@@ -304,6 +304,9 @@ snic_tgt_create(struct snic *snic, struct snic_tgt_id *tgtid)
 			      ret);
 
 		put_device(&snic->shost->shost_gendev);
+		spin_lock_irqsave(snic->shost->host_lock, flags);
+		list_del(&tgt->list);
+		spin_unlock_irqrestore(snic->shost->host_lock, flags);
 		kfree(tgt);
 		tgt = NULL;
 
diff --git a/drivers/scsi/storvsc_drv.c b/drivers/scsi/storvsc_drv.c
index 3c5b7e4227b2..d7a84c0bfaeb 100644
--- a/drivers/scsi/storvsc_drv.c
+++ b/drivers/scsi/storvsc_drv.c
@@ -1651,13 +1651,13 @@ static int storvsc_host_reset_handler(struct scsi_cmnd *scmnd)
  * be unbounded on Azure.  Reset the timer unconditionally to give the host a
  * chance to perform EH.
  */
-static enum blk_eh_timer_return storvsc_eh_timed_out(struct scsi_cmnd *scmnd)
+static enum scsi_timeout_action storvsc_eh_timed_out(struct scsi_cmnd *scmnd)
 {
 #if IS_ENABLED(CONFIG_SCSI_FC_ATTRS)
 	if (scmnd->device->host->transportt == fc_transport_template)
 		return fc_eh_timed_out(scmnd);
 #endif
-	return BLK_EH_RESET_TIMER;
+	return SCSI_EH_RESET_TIMER;
 }
 
 static bool storvsc_scsi_cmd_ok(struct scsi_cmnd *scmnd)
diff --git a/drivers/scsi/virtio_scsi.c b/drivers/scsi/virtio_scsi.c
index 2a79ab16134b..d07d24c06b54 100644
--- a/drivers/scsi/virtio_scsi.c
+++ b/drivers/scsi/virtio_scsi.c
@@ -731,9 +731,9 @@ static void virtscsi_commit_rqs(struct Scsi_Host *shost, u16 hwq)
  * latencies might be higher than on bare metal.  Reset the timer
  * unconditionally to give the host a chance to perform EH.
  */
-static enum blk_eh_timer_return virtscsi_eh_timed_out(struct scsi_cmnd *scmnd)
+static enum scsi_timeout_action virtscsi_eh_timed_out(struct scsi_cmnd *scmnd)
 {
-	return BLK_EH_RESET_TIMER;
+	return SCSI_EH_RESET_TIMER;
 }
 
 static struct scsi_host_template virtscsi_host_template = {
diff --git a/drivers/target/iscsi/iscsi_target_nego.c b/drivers/target/iscsi/iscsi_target_nego.c
index f2919319ad38..ff49c8f3fe24 100644
--- a/drivers/target/iscsi/iscsi_target_nego.c
+++ b/drivers/target/iscsi/iscsi_target_nego.c
@@ -1018,6 +1018,13 @@ static int iscsi_target_handle_csg_one(struct iscsit_conn *conn, struct iscsi_lo
 	return 0;
 }
 
+/*
+ * RETURN VALUE:
+ *
+ *  1 = Login successful
+ * -1 = Login failed
+ *  0 = More PDU exchanges required
+ */
 static int iscsi_target_do_login(struct iscsit_conn *conn, struct iscsi_login *login)
 {
 	int pdu_count = 0;
@@ -1363,12 +1370,13 @@ int iscsi_target_start_negotiation(
 		ret = -1;
 
 	if (ret < 0) {
-		cancel_delayed_work_sync(&conn->login_work);
 		iscsi_target_restore_sock_callbacks(conn);
 		iscsi_remove_failed_auth_entry(conn);
 	}
-	if (ret != 0)
+	if (ret != 0) {
+		cancel_delayed_work_sync(&conn->login_work);
 		iscsi_target_nego_release(conn);
+	}
 
 	return ret;
 }
diff --git a/drivers/target/target_core_configfs.c b/drivers/target/target_core_configfs.c
index 416514c5c7ac..611b0424e305 100644
--- a/drivers/target/target_core_configfs.c
+++ b/drivers/target/target_core_configfs.c
@@ -12,6 +12,7 @@
  *
  ****************************************************************************/
 
+#include <linux/kstrtox.h>
 #include <linux/module.h>
 #include <linux/moduleparam.h>
 #include <generated/utsrelease.h>
@@ -547,6 +548,7 @@ DEF_CONFIGFS_ATTRIB_SHOW(unmap_granularity);
 DEF_CONFIGFS_ATTRIB_SHOW(unmap_granularity_alignment);
 DEF_CONFIGFS_ATTRIB_SHOW(unmap_zeroes_data);
 DEF_CONFIGFS_ATTRIB_SHOW(max_write_same_len);
+DEF_CONFIGFS_ATTRIB_SHOW(emulate_rsoc);
 
 #define DEF_CONFIGFS_ATTRIB_STORE_U32(_name)				\
 static ssize_t _name##_store(struct config_item *item, const char *page,\
@@ -577,7 +579,7 @@ static ssize_t _name##_store(struct config_item *item, const char *page,	\
 	bool flag;							\
 	int ret;							\
 									\
-	ret = strtobool(page, &flag);					\
+	ret = kstrtobool(page, &flag);					\
 	if (ret < 0)							\
 		return ret;						\
 	da->_name = flag;						\
@@ -637,7 +639,7 @@ static ssize_t emulate_model_alias_store(struct config_item *item,
 		return -EINVAL;
 	}
 
-	ret = strtobool(page, &flag);
+	ret = kstrtobool(page, &flag);
 	if (ret < 0)
 		return ret;
 
@@ -659,7 +661,7 @@ static ssize_t emulate_write_cache_store(struct config_item *item,
 	bool flag;
 	int ret;
 
-	ret = strtobool(page, &flag);
+	ret = kstrtobool(page, &flag);
 	if (ret < 0)
 		return ret;
 
@@ -711,7 +713,7 @@ static ssize_t emulate_tas_store(struct config_item *item,
 	bool flag;
 	int ret;
 
-	ret = strtobool(page, &flag);
+	ret = kstrtobool(page, &flag);
 	if (ret < 0)
 		return ret;
 
@@ -736,7 +738,7 @@ static ssize_t emulate_tpu_store(struct config_item *item,
 	bool flag;
 	int ret;
 
-	ret = strtobool(page, &flag);
+	ret = kstrtobool(page, &flag);
 	if (ret < 0)
 		return ret;
 
@@ -766,7 +768,7 @@ static ssize_t emulate_tpws_store(struct config_item *item,
 	bool flag;
 	int ret;
 
-	ret = strtobool(page, &flag);
+	ret = kstrtobool(page, &flag);
 	if (ret < 0)
 		return ret;
 
@@ -865,7 +867,7 @@ static ssize_t pi_prot_format_store(struct config_item *item,
 	bool flag;
 	int ret;
 
-	ret = strtobool(page, &flag);
+	ret = kstrtobool(page, &flag);
 	if (ret < 0)
 		return ret;
 
@@ -902,7 +904,7 @@ static ssize_t pi_prot_verify_store(struct config_item *item,
 	bool flag;
 	int ret;
 
-	ret = strtobool(page, &flag);
+	ret = kstrtobool(page, &flag);
 	if (ret < 0)
 		return ret;
 
@@ -931,7 +933,7 @@ static ssize_t force_pr_aptpl_store(struct config_item *item,
 	bool flag;
 	int ret;
 
-	ret = strtobool(page, &flag);
+	ret = kstrtobool(page, &flag);
 	if (ret < 0)
 		return ret;
 	if (da->da_dev->export_count) {
@@ -953,7 +955,7 @@ static ssize_t emulate_rest_reord_store(struct config_item *item,
 	bool flag;
 	int ret;
 
-	ret = strtobool(page, &flag);
+	ret = kstrtobool(page, &flag);
 	if (ret < 0)
 		return ret;
 
@@ -976,7 +978,7 @@ static ssize_t unmap_zeroes_data_store(struct config_item *item,
 	bool flag;
 	int ret;
 
-	ret = strtobool(page, &flag);
+	ret = kstrtobool(page, &flag);
 	if (ret < 0)
 		return ret;
 
@@ -1100,8 +1102,6 @@ static ssize_t block_size_store(struct config_item *item,
 	}
 
 	da->block_size = val;
-	if (da->max_bytes_per_io)
-		da->hw_max_sectors = da->max_bytes_per_io / val;
 
 	pr_debug("dev[%p]: SE Device block_size changed to %u\n",
 			da->da_dev, val);
@@ -1125,7 +1125,7 @@ static ssize_t alua_support_store(struct config_item *item,
 	bool flag, oldflag;
 	int ret;
 
-	ret = strtobool(page, &flag);
+	ret = kstrtobool(page, &flag);
 	if (ret < 0)
 		return ret;
 
@@ -1164,7 +1164,7 @@ static ssize_t pgr_support_store(struct config_item *item,
 	bool flag, oldflag;
 	int ret;
 
-	ret = strtobool(page, &flag);
+	ret = kstrtobool(page, &flag);
 	if (ret < 0)
 		return ret;
 
@@ -1186,6 +1186,23 @@ static ssize_t pgr_support_store(struct config_item *item,
 	return count;
 }
 
+static ssize_t emulate_rsoc_store(struct config_item *item,
+		const char *page, size_t count)
+{
+	struct se_dev_attrib *da = to_attrib(item);
+	bool flag;
+	int ret;
+
+	ret = kstrtobool(page, &flag);
+	if (ret < 0)
+		return ret;
+
+	da->emulate_rsoc = flag;
+	pr_debug("dev[%p]: SE Device REPORT_SUPPORTED_OPERATION_CODES_EMULATION flag: %d\n",
+			da->da_dev, flag);
+	return count;
+}
+
 CONFIGFS_ATTR(, emulate_model_alias);
 CONFIGFS_ATTR(, emulate_dpo);
 CONFIGFS_ATTR(, emulate_fua_write);
@@ -1198,6 +1215,7 @@ CONFIGFS_ATTR(, emulate_tpws);
 CONFIGFS_ATTR(, emulate_caw);
 CONFIGFS_ATTR(, emulate_3pc);
 CONFIGFS_ATTR(, emulate_pr);
+CONFIGFS_ATTR(, emulate_rsoc);
 CONFIGFS_ATTR(, pi_prot_type);
 CONFIGFS_ATTR_RO(, hw_pi_prot_type);
 CONFIGFS_ATTR(, pi_prot_format);
@@ -1261,6 +1279,7 @@ struct configfs_attribute *sbc_attrib_attrs[] = {
 	&attr_max_write_same_len,
 	&attr_alua_support,
 	&attr_pgr_support,
+	&attr_emulate_rsoc,
 	NULL,
 };
 EXPORT_SYMBOL(sbc_attrib_attrs);
diff --git a/drivers/target/target_core_device.c b/drivers/target/target_core_device.c
index cb4f7cc02f8f..f6e58410ec3f 100644
--- a/drivers/target/target_core_device.c
+++ b/drivers/target/target_core_device.c
@@ -804,6 +804,7 @@ struct se_device *target_alloc_device(struct se_hba *hba, const char *name)
 	dev->dev_attrib.emulate_caw = DA_EMULATE_CAW;
 	dev->dev_attrib.emulate_3pc = DA_EMULATE_3PC;
 	dev->dev_attrib.emulate_pr = DA_EMULATE_PR;
+	dev->dev_attrib.emulate_rsoc = DA_EMULATE_RSOC;
 	dev->dev_attrib.pi_prot_type = TARGET_DIF_TYPE0_PROT;
 	dev->dev_attrib.enforce_pr_isids = DA_ENFORCE_PR_ISIDS;
 	dev->dev_attrib.force_pr_aptpl = DA_FORCE_PR_APTPL;
diff --git a/drivers/target/target_core_fabric_configfs.c b/drivers/target/target_core_fabric_configfs.c
index 95a88f6224cd..67b18a67317a 100644
--- a/drivers/target/target_core_fabric_configfs.c
+++ b/drivers/target/target_core_fabric_configfs.c
@@ -11,6 +11,7 @@
 *
  ****************************************************************************/
 
+#include <linux/kstrtox.h>
 #include <linux/module.h>
 #include <linux/moduleparam.h>
 #include <linux/utsname.h>
@@ -829,7 +830,7 @@ static ssize_t target_fabric_tpg_base_enable_store(struct config_item *item,
 	int ret;
 	bool op;
 
-	ret = strtobool(page, &op);
+	ret = kstrtobool(page, &op);
 	if (ret)
 		return ret;
 
diff --git a/drivers/target/target_core_file.c b/drivers/target/target_core_file.c
index 7e81a53dbf3c..fd584111da45 100644
--- a/drivers/target/target_core_file.c
+++ b/drivers/target/target_core_file.c
@@ -193,7 +193,6 @@ static int fd_configure_device(struct se_device *dev)
 	}
 
 	dev->dev_attrib.hw_block_size = fd_dev->fd_block_size;
-	dev->dev_attrib.max_bytes_per_io = FD_MAX_BYTES;
 	dev->dev_attrib.hw_max_sectors = FD_MAX_BYTES / fd_dev->fd_block_size;
 	dev->dev_attrib.hw_queue_depth = FD_MAX_DEVICE_QUEUE_DEPTH;
 
diff --git a/drivers/target/target_core_iblock.c b/drivers/target/target_core_iblock.c
index d9266cf558dc..cc838ffd1294 100644
--- a/drivers/target/target_core_iblock.c
+++ b/drivers/target/target_core_iblock.c
@@ -124,7 +124,9 @@ static int iblock_configure_device(struct se_device *dev)
 	q = bdev_get_queue(bd);
 
 	dev->dev_attrib.hw_block_size = bdev_logical_block_size(bd);
-	dev->dev_attrib.hw_max_sectors = queue_max_hw_sectors(q);
+	dev->dev_attrib.hw_max_sectors = mult_frac(queue_max_hw_sectors(q),
+			SECTOR_SIZE,
+			dev->dev_attrib.hw_block_size);
 	dev->dev_attrib.hw_queue_depth = q->nr_requests;
 
 	/*
diff --git a/drivers/target/target_core_sbc.c b/drivers/target/target_core_sbc.c
index 1e3216de1e04..7536ca797606 100644
--- a/drivers/target/target_core_sbc.c
+++ b/drivers/target/target_core_sbc.c
@@ -270,14 +270,6 @@ static inline unsigned long long transport_lba_64(unsigned char *cdb)
 	return get_unaligned_be64(&cdb[2]);
 }
 
-/*
- * For VARIABLE_LENGTH_CDB w/ 32 byte extended CDBs
- */
-static inline unsigned long long transport_lba_64_ext(unsigned char *cdb)
-{
-	return get_unaligned_be64(&cdb[12]);
-}
-
 static sense_reason_t
 sbc_setup_write_same(struct se_cmd *cmd, unsigned char flags, struct sbc_ops *ops)
 {
@@ -454,12 +446,22 @@ static sense_reason_t compare_and_write_callback(struct se_cmd *cmd, bool succes
 	sense_reason_t ret = TCM_NO_SENSE;
 	int i;
 
-	/*
-	 * Handle early failure in transport_generic_request_failure(),
-	 * which will not have taken ->caw_sem yet..
-	 */
-	if (!success && (!cmd->t_data_sg || !cmd->t_bidi_data_sg))
-		return TCM_NO_SENSE;
+	if (!success) {
+		/*
+		 * Handle early failure in transport_generic_request_failure(),
+		 * which will not have taken ->caw_sem yet..
+		 */
+		if (!cmd->t_data_sg || !cmd->t_bidi_data_sg)
+			return TCM_NO_SENSE;
+
+		/*
+		 * The command has been stopped or aborted so
+		 * we don't have to perform the write operation.
+		 */
+		WARN_ON(!(cmd->transport_state &
+			(CMD_T_ABORTED | CMD_T_STOP)));
+		goto out;
+	}
 	/*
 	 * Handle special case for zero-length COMPARE_AND_WRITE
 	 */
diff --git a/drivers/target/target_core_spc.c b/drivers/target/target_core_spc.c
index 7cca3b15472b..fcc7b10a7ae3 100644
--- a/drivers/target/target_core_spc.c
+++ b/drivers/target/target_core_spc.c
@@ -227,7 +227,7 @@ spc_emulate_evpd_83(struct se_cmd *cmd, unsigned char *buf)
 	struct t10_alua_tg_pt_gp *tg_pt_gp;
 	unsigned char *prod = &dev->t10_wwn.model[0];
 	u32 prod_len;
-	u32 unit_serial_len, off = 0;
+	u32 off = 0;
 	u16 len = 0, id_len;
 
 	off = 4;
@@ -272,13 +272,9 @@ check_t10_vend_desc:
 	prod_len += strlen(prod);
 	prod_len++; /* For : */
 
-	if (dev->dev_flags & DF_EMULATED_VPD_UNIT_SERIAL) {
-		unit_serial_len = strlen(&dev->t10_wwn.unit_serial[0]);
-		unit_serial_len++; /* For NULL Terminator */
-
+	if (dev->dev_flags & DF_EMULATED_VPD_UNIT_SERIAL)
 		id_len += sprintf(&buf[off+12], "%s:%s", prod,
 				&dev->t10_wwn.unit_serial[0]);
-	}
 	buf[off] = 0x2; /* ASCII */
 	buf[off+1] = 0x1; /* T10 Vendor ID */
 	buf[off+2] = 0x0;
@@ -519,6 +515,7 @@ spc_emulate_evpd_b0(struct se_cmd *cmd, unsigned char *buf)
 	struct se_device *dev = cmd->se_dev;
 	u32 mtl = 0;
 	int have_tp = 0, opt, min;
+	u32 io_max_blocks;
 
 	/*
 	 * Following spc3r22 section 6.5.3 Block Limits VPD page, when
@@ -557,7 +554,10 @@ spc_emulate_evpd_b0(struct se_cmd *cmd, unsigned char *buf)
 		mtl = (cmd->se_tfo->max_data_sg_nents * PAGE_SIZE) /
 		       dev->dev_attrib.block_size;
 	}
-	put_unaligned_be32(min_not_zero(mtl, dev->dev_attrib.hw_max_sectors), &buf[8]);
+	io_max_blocks = mult_frac(dev->dev_attrib.hw_max_sectors,
+			dev->dev_attrib.hw_block_size,
+			dev->dev_attrib.block_size);
+	put_unaligned_be32(min_not_zero(mtl, io_max_blocks), &buf[8]);
 
 	/*
 	 * Set OPTIMAL TRANSFER LENGTH
@@ -1314,6 +1314,922 @@ spc_emulate_testunitready(struct se_cmd *cmd)
 	return 0;
 }
 
+static void set_dpofua_usage_bits(u8 *usage_bits, struct se_device *dev)
+{
+	if (!target_check_fua(dev))
+		usage_bits[1] &= ~0x18;
+	else
+		usage_bits[1] |= 0x18;
+}
+
+static void set_dpofua_usage_bits32(u8 *usage_bits, struct se_device *dev)
+{
+	if (!target_check_fua(dev))
+		usage_bits[10] &= ~0x18;
+	else
+		usage_bits[10] |= 0x18;
+}
+
+static struct target_opcode_descriptor tcm_opcode_read6 = {
+	.support = SCSI_SUPPORT_FULL,
+	.opcode = READ_6,
+	.cdb_size = 6,
+	.usage_bits = {READ_6, 0x1f, 0xff, 0xff,
+		       0xff, SCSI_CONTROL_MASK},
+};
+
+static struct target_opcode_descriptor tcm_opcode_read10 = {
+	.support = SCSI_SUPPORT_FULL,
+	.opcode = READ_10,
+	.cdb_size = 10,
+	.usage_bits = {READ_10, 0xf8, 0xff, 0xff,
+		       0xff, 0xff, SCSI_GROUP_NUMBER_MASK, 0xff,
+		       0xff, SCSI_CONTROL_MASK},
+	.update_usage_bits = set_dpofua_usage_bits,
+};
+
+static struct target_opcode_descriptor tcm_opcode_read12 = {
+	.support = SCSI_SUPPORT_FULL,
+	.opcode = READ_12,
+	.cdb_size = 12,
+	.usage_bits = {READ_12, 0xf8, 0xff, 0xff,
+		       0xff, 0xff, 0xff, 0xff,
+		       0xff, 0xff, SCSI_GROUP_NUMBER_MASK, SCSI_CONTROL_MASK},
+	.update_usage_bits = set_dpofua_usage_bits,
+};
+
+static struct target_opcode_descriptor tcm_opcode_read16 = {
+	.support = SCSI_SUPPORT_FULL,
+	.opcode = READ_16,
+	.cdb_size = 16,
+	.usage_bits = {READ_16, 0xf8, 0xff, 0xff,
+		       0xff, 0xff, 0xff, 0xff,
+		       0xff, 0xff, 0xff, 0xff,
+		       0xff, 0xff, SCSI_GROUP_NUMBER_MASK, SCSI_CONTROL_MASK},
+	.update_usage_bits = set_dpofua_usage_bits,
+};
+
+static struct target_opcode_descriptor tcm_opcode_write6 = {
+	.support = SCSI_SUPPORT_FULL,
+	.opcode = WRITE_6,
+	.cdb_size = 6,
+	.usage_bits = {WRITE_6, 0x1f, 0xff, 0xff,
+		       0xff, SCSI_CONTROL_MASK},
+};
+
+static struct target_opcode_descriptor tcm_opcode_write10 = {
+	.support = SCSI_SUPPORT_FULL,
+	.opcode = WRITE_10,
+	.cdb_size = 10,
+	.usage_bits = {WRITE_10, 0xf8, 0xff, 0xff,
+		       0xff, 0xff, SCSI_GROUP_NUMBER_MASK, 0xff,
+		       0xff, SCSI_CONTROL_MASK},
+	.update_usage_bits = set_dpofua_usage_bits,
+};
+
+static struct target_opcode_descriptor tcm_opcode_write_verify10 = {
+	.support = SCSI_SUPPORT_FULL,
+	.opcode = WRITE_VERIFY,
+	.cdb_size = 10,
+	.usage_bits = {WRITE_VERIFY, 0xf0, 0xff, 0xff,
+		       0xff, 0xff, SCSI_GROUP_NUMBER_MASK, 0xff,
+		       0xff, SCSI_CONTROL_MASK},
+	.update_usage_bits = set_dpofua_usage_bits,
+};
+
+static struct target_opcode_descriptor tcm_opcode_write12 = {
+	.support = SCSI_SUPPORT_FULL,
+	.opcode = WRITE_12,
+	.cdb_size = 12,
+	.usage_bits = {WRITE_12, 0xf8, 0xff, 0xff,
+		       0xff, 0xff, 0xff, 0xff,
+		       0xff, 0xff, SCSI_GROUP_NUMBER_MASK, SCSI_CONTROL_MASK},
+	.update_usage_bits = set_dpofua_usage_bits,
+};
+
+static struct target_opcode_descriptor tcm_opcode_write16 = {
+	.support = SCSI_SUPPORT_FULL,
+	.opcode = WRITE_16,
+	.cdb_size = 16,
+	.usage_bits = {WRITE_16, 0xf8, 0xff, 0xff,
+		       0xff, 0xff, 0xff, 0xff,
+		       0xff, 0xff, 0xff, 0xff,
+		       0xff, 0xff, SCSI_GROUP_NUMBER_MASK, SCSI_CONTROL_MASK},
+	.update_usage_bits = set_dpofua_usage_bits,
+};
+
+static struct target_opcode_descriptor tcm_opcode_write_verify16 = {
+	.support = SCSI_SUPPORT_FULL,
+	.opcode = WRITE_VERIFY_16,
+	.cdb_size = 16,
+	.usage_bits = {WRITE_VERIFY_16, 0xf0, 0xff, 0xff,
+		       0xff, 0xff, 0xff, 0xff,
+		       0xff, 0xff, 0xff, 0xff,
+		       0xff, 0xff, SCSI_GROUP_NUMBER_MASK, SCSI_CONTROL_MASK},
+	.update_usage_bits = set_dpofua_usage_bits,
+};
+
+static bool tcm_is_ws_enabled(struct se_cmd *cmd)
+{
+	struct sbc_ops *ops = cmd->protocol_data;
+	struct se_device *dev = cmd->se_dev;
+
+	return (dev->dev_attrib.emulate_tpws && !!ops->execute_unmap) ||
+	       !!ops->execute_write_same;
+}
+
+static struct target_opcode_descriptor tcm_opcode_write_same32 = {
+	.support = SCSI_SUPPORT_FULL,
+	.serv_action_valid = 1,
+	.opcode = VARIABLE_LENGTH_CMD,
+	.service_action = WRITE_SAME_32,
+	.cdb_size = 32,
+	.usage_bits = {VARIABLE_LENGTH_CMD, SCSI_CONTROL_MASK, 0x00, 0x00,
+		       0x00, 0x00, SCSI_GROUP_NUMBER_MASK, 0x18,
+		       0x00, WRITE_SAME_32, 0xe8, 0x00,
+		       0xff, 0xff, 0xff, 0xff,
+		       0xff, 0xff, 0xff, 0xff,
+		       0x00, 0x00, 0x00, 0x00,
+		       0x00, 0x00, 0x00, 0x00,
+		       0xff, 0xff, 0xff, 0xff},
+	.enabled = tcm_is_ws_enabled,
+	.update_usage_bits = set_dpofua_usage_bits32,
+};
+
+static bool tcm_is_caw_enabled(struct se_cmd *cmd)
+{
+	struct se_device *dev = cmd->se_dev;
+
+	return dev->dev_attrib.emulate_caw;
+}
+
+static struct target_opcode_descriptor tcm_opcode_compare_write = {
+	.support = SCSI_SUPPORT_FULL,
+	.opcode = COMPARE_AND_WRITE,
+	.cdb_size = 16,
+	.usage_bits = {COMPARE_AND_WRITE, 0x18, 0xff, 0xff,
+		       0xff, 0xff, 0xff, 0xff,
+		       0xff, 0xff, 0x00, 0x00,
+		       0x00, 0xff, SCSI_GROUP_NUMBER_MASK, SCSI_CONTROL_MASK},
+	.enabled = tcm_is_caw_enabled,
+	.update_usage_bits = set_dpofua_usage_bits,
+};
+
+static struct target_opcode_descriptor tcm_opcode_read_capacity = {
+	.support = SCSI_SUPPORT_FULL,
+	.opcode = READ_CAPACITY,
+	.cdb_size = 10,
+	.usage_bits = {READ_CAPACITY, 0x00, 0xff, 0xff,
+		       0xff, 0xff, 0x00, 0x00,
+		       0x01, SCSI_CONTROL_MASK},
+};
+
+static struct target_opcode_descriptor tcm_opcode_read_capacity16 = {
+	.support = SCSI_SUPPORT_FULL,
+	.serv_action_valid = 1,
+	.opcode = SERVICE_ACTION_IN_16,
+	.service_action = SAI_READ_CAPACITY_16,
+	.cdb_size = 16,
+	.usage_bits = {SERVICE_ACTION_IN_16, SAI_READ_CAPACITY_16, 0x00, 0x00,
+		       0x00, 0x00, 0x00, 0x00,
+		       0x00, 0x00, 0xff, 0xff,
+		       0xff, 0xff, 0x00, SCSI_CONTROL_MASK},
+};
+
+static bool tcm_is_rep_ref_enabled(struct se_cmd *cmd)
+{
+	struct se_device *dev = cmd->se_dev;
+
+	spin_lock(&dev->t10_alua.lba_map_lock);
+	if (list_empty(&dev->t10_alua.lba_map_list)) {
+		spin_unlock(&dev->t10_alua.lba_map_lock);
+		return false;
+	}
+	spin_unlock(&dev->t10_alua.lba_map_lock);
+	return true;
+
+}
+
+static struct target_opcode_descriptor tcm_opcode_read_report_refferals = {
+	.support = SCSI_SUPPORT_FULL,
+	.serv_action_valid = 1,
+	.opcode = SERVICE_ACTION_IN_16,
+	.service_action = SAI_REPORT_REFERRALS,
+	.cdb_size = 16,
+	.usage_bits = {SERVICE_ACTION_IN_16, SAI_REPORT_REFERRALS, 0x00, 0x00,
+		       0x00, 0x00, 0x00, 0x00,
+		       0x00, 0x00, 0xff, 0xff,
+		       0xff, 0xff, 0x00, SCSI_CONTROL_MASK},
+	.enabled = tcm_is_rep_ref_enabled,
+};
+
+static struct target_opcode_descriptor tcm_opcode_sync_cache = {
+	.support = SCSI_SUPPORT_FULL,
+	.opcode = SYNCHRONIZE_CACHE,
+	.cdb_size = 10,
+	.usage_bits = {SYNCHRONIZE_CACHE, 0x02, 0xff, 0xff,
+		       0xff, 0xff, SCSI_GROUP_NUMBER_MASK, 0xff,
+		       0xff, SCSI_CONTROL_MASK},
+};
+
+static struct target_opcode_descriptor tcm_opcode_sync_cache16 = {
+	.support = SCSI_SUPPORT_FULL,
+	.opcode = SYNCHRONIZE_CACHE_16,
+	.cdb_size = 16,
+	.usage_bits = {SYNCHRONIZE_CACHE_16, 0x02, 0xff, 0xff,
+		       0xff, 0xff, 0xff, 0xff,
+		       0xff, 0xff, 0xff, 0xff,
+		       0xff, 0xff, SCSI_GROUP_NUMBER_MASK, SCSI_CONTROL_MASK},
+};
+
+static bool tcm_is_unmap_enabled(struct se_cmd *cmd)
+{
+	struct sbc_ops *ops = cmd->protocol_data;
+	struct se_device *dev = cmd->se_dev;
+
+	return ops->execute_unmap && dev->dev_attrib.emulate_tpu;
+}
+
+static struct target_opcode_descriptor tcm_opcode_unmap = {
+	.support = SCSI_SUPPORT_FULL,
+	.opcode = UNMAP,
+	.cdb_size = 10,
+	.usage_bits = {UNMAP, 0x00, 0x00, 0x00,
+		       0x00, 0x00, SCSI_GROUP_NUMBER_MASK, 0xff,
+		       0xff, SCSI_CONTROL_MASK},
+	.enabled = tcm_is_unmap_enabled,
+};
+
+static struct target_opcode_descriptor tcm_opcode_write_same = {
+	.support = SCSI_SUPPORT_FULL,
+	.opcode = WRITE_SAME,
+	.cdb_size = 10,
+	.usage_bits = {WRITE_SAME, 0xe8, 0xff, 0xff,
+		       0xff, 0xff, SCSI_GROUP_NUMBER_MASK, 0xff,
+		       0xff, SCSI_CONTROL_MASK},
+	.enabled = tcm_is_ws_enabled,
+};
+
+static struct target_opcode_descriptor tcm_opcode_write_same16 = {
+	.support = SCSI_SUPPORT_FULL,
+	.opcode = WRITE_SAME_16,
+	.cdb_size = 16,
+	.usage_bits = {WRITE_SAME_16, 0xe8, 0xff, 0xff,
+		       0xff, 0xff, 0xff, 0xff,
+		       0xff, 0xff, 0xff, 0xff,
+		       0xff, 0xff, SCSI_GROUP_NUMBER_MASK, SCSI_CONTROL_MASK},
+	.enabled = tcm_is_ws_enabled,
+};
+
+static struct target_opcode_descriptor tcm_opcode_verify = {
+	.support = SCSI_SUPPORT_FULL,
+	.opcode = VERIFY,
+	.cdb_size = 10,
+	.usage_bits = {VERIFY, 0x00, 0xff, 0xff,
+		       0xff, 0xff, SCSI_GROUP_NUMBER_MASK, 0xff,
+		       0xff, SCSI_CONTROL_MASK},
+};
+
+static struct target_opcode_descriptor tcm_opcode_verify16 = {
+	.support = SCSI_SUPPORT_FULL,
+	.opcode = VERIFY_16,
+	.cdb_size = 16,
+	.usage_bits = {VERIFY_16, 0x00, 0xff, 0xff,
+		       0xff, 0xff, 0xff, 0xff,
+		       0xff, 0xff, 0xff, 0xff,
+		       0xff, 0xff, SCSI_GROUP_NUMBER_MASK, SCSI_CONTROL_MASK},
+};
+
+static struct target_opcode_descriptor tcm_opcode_start_stop = {
+	.support = SCSI_SUPPORT_FULL,
+	.opcode = START_STOP,
+	.cdb_size = 6,
+	.usage_bits = {START_STOP, 0x01, 0x00, 0x00,
+		       0x01, SCSI_CONTROL_MASK},
+};
+
+static struct target_opcode_descriptor tcm_opcode_mode_select = {
+	.support = SCSI_SUPPORT_FULL,
+	.opcode = MODE_SELECT,
+	.cdb_size = 6,
+	.usage_bits = {MODE_SELECT, 0x10, 0x00, 0x00,
+		       0xff, SCSI_CONTROL_MASK},
+};
+
+static struct target_opcode_descriptor tcm_opcode_mode_select10 = {
+	.support = SCSI_SUPPORT_FULL,
+	.opcode = MODE_SELECT_10,
+	.cdb_size = 10,
+	.usage_bits = {MODE_SELECT_10, 0x10, 0x00, 0x00,
+		       0x00, 0x00, 0x00, 0xff,
+		       0xff, SCSI_CONTROL_MASK},
+};
+
+static struct target_opcode_descriptor tcm_opcode_mode_sense = {
+	.support = SCSI_SUPPORT_FULL,
+	.opcode = MODE_SENSE,
+	.cdb_size = 6,
+	.usage_bits = {MODE_SENSE, 0x08, 0xff, 0xff,
+		       0xff, SCSI_CONTROL_MASK},
+};
+
+static struct target_opcode_descriptor tcm_opcode_mode_sense10 = {
+	.support = SCSI_SUPPORT_FULL,
+	.opcode = MODE_SENSE_10,
+	.cdb_size = 10,
+	.usage_bits = {MODE_SENSE_10, 0x18, 0xff, 0xff,
+		       0x00, 0x00, 0x00, 0xff,
+		       0xff, SCSI_CONTROL_MASK},
+};
+
+static struct target_opcode_descriptor tcm_opcode_pri_read_keys = {
+	.support = SCSI_SUPPORT_FULL,
+	.serv_action_valid = 1,
+	.opcode = PERSISTENT_RESERVE_IN,
+	.service_action = PRI_READ_KEYS,
+	.cdb_size = 10,
+	.usage_bits = {PERSISTENT_RESERVE_IN, PRI_READ_KEYS, 0x00, 0x00,
+		       0x00, 0x00, 0x00, 0xff,
+		       0xff, SCSI_CONTROL_MASK},
+};
+
+static struct target_opcode_descriptor tcm_opcode_pri_read_resrv = {
+	.support = SCSI_SUPPORT_FULL,
+	.serv_action_valid = 1,
+	.opcode = PERSISTENT_RESERVE_IN,
+	.service_action = PRI_READ_RESERVATION,
+	.cdb_size = 10,
+	.usage_bits = {PERSISTENT_RESERVE_IN, PRI_READ_RESERVATION, 0x00, 0x00,
+		       0x00, 0x00, 0x00, 0xff,
+		       0xff, SCSI_CONTROL_MASK},
+};
+
+static bool tcm_is_pr_enabled(struct se_cmd *cmd)
+{
+	struct se_device *dev = cmd->se_dev;
+
+	return dev->dev_attrib.emulate_pr;
+}
+
+static struct target_opcode_descriptor tcm_opcode_pri_read_caps = {
+	.support = SCSI_SUPPORT_FULL,
+	.serv_action_valid = 1,
+	.opcode = PERSISTENT_RESERVE_IN,
+	.service_action = PRI_REPORT_CAPABILITIES,
+	.cdb_size = 10,
+	.usage_bits = {PERSISTENT_RESERVE_IN, PRI_REPORT_CAPABILITIES, 0x00, 0x00,
+		       0x00, 0x00, 0x00, 0xff,
+		       0xff, SCSI_CONTROL_MASK},
+	.enabled = tcm_is_pr_enabled,
+};
+
+static struct target_opcode_descriptor tcm_opcode_pri_read_full_status = {
+	.support = SCSI_SUPPORT_FULL,
+	.serv_action_valid = 1,
+	.opcode = PERSISTENT_RESERVE_IN,
+	.service_action = PRI_READ_FULL_STATUS,
+	.cdb_size = 10,
+	.usage_bits = {PERSISTENT_RESERVE_IN, PRI_READ_FULL_STATUS, 0x00, 0x00,
+		       0x00, 0x00, 0x00, 0xff,
+		       0xff, SCSI_CONTROL_MASK},
+	.enabled = tcm_is_pr_enabled,
+};
+
+static struct target_opcode_descriptor tcm_opcode_pro_register = {
+	.support = SCSI_SUPPORT_FULL,
+	.serv_action_valid = 1,
+	.opcode = PERSISTENT_RESERVE_OUT,
+	.service_action = PRO_REGISTER,
+	.cdb_size = 10,
+	.usage_bits = {PERSISTENT_RESERVE_OUT, PRO_REGISTER, 0xff, 0x00,
+		       0x00, 0xff, 0xff, 0xff,
+		       0xff, SCSI_CONTROL_MASK},
+	.enabled = tcm_is_pr_enabled,
+};
+
+static struct target_opcode_descriptor tcm_opcode_pro_reserve = {
+	.support = SCSI_SUPPORT_FULL,
+	.serv_action_valid = 1,
+	.opcode = PERSISTENT_RESERVE_OUT,
+	.service_action = PRO_RESERVE,
+	.cdb_size = 10,
+	.usage_bits = {PERSISTENT_RESERVE_OUT, PRO_RESERVE, 0xff, 0x00,
+		       0x00, 0xff, 0xff, 0xff,
+		       0xff, SCSI_CONTROL_MASK},
+	.enabled = tcm_is_pr_enabled,
+};
+
+static struct target_opcode_descriptor tcm_opcode_pro_release = {
+	.support = SCSI_SUPPORT_FULL,
+	.serv_action_valid = 1,
+	.opcode = PERSISTENT_RESERVE_OUT,
+	.service_action = PRO_RELEASE,
+	.cdb_size = 10,
+	.usage_bits = {PERSISTENT_RESERVE_OUT, PRO_RELEASE, 0xff, 0x00,
+		       0x00, 0xff, 0xff, 0xff,
+		       0xff, SCSI_CONTROL_MASK},
+	.enabled = tcm_is_pr_enabled,
+};
+
+static struct target_opcode_descriptor tcm_opcode_pro_clear = {
+	.support = SCSI_SUPPORT_FULL,
+	.serv_action_valid = 1,
+	.opcode = PERSISTENT_RESERVE_OUT,
+	.service_action = PRO_CLEAR,
+	.cdb_size = 10,
+	.usage_bits = {PERSISTENT_RESERVE_OUT, PRO_CLEAR, 0xff, 0x00,
+		       0x00, 0xff, 0xff, 0xff,
+		       0xff, SCSI_CONTROL_MASK},
+	.enabled = tcm_is_pr_enabled,
+};
+
+static struct target_opcode_descriptor tcm_opcode_pro_preempt = {
+	.support = SCSI_SUPPORT_FULL,
+	.serv_action_valid = 1,
+	.opcode = PERSISTENT_RESERVE_OUT,
+	.service_action = PRO_PREEMPT,
+	.cdb_size = 10,
+	.usage_bits = {PERSISTENT_RESERVE_OUT, PRO_PREEMPT, 0xff, 0x00,
+		       0x00, 0xff, 0xff, 0xff,
+		       0xff, SCSI_CONTROL_MASK},
+	.enabled = tcm_is_pr_enabled,
+};
+
+static struct target_opcode_descriptor tcm_opcode_pro_preempt_abort = {
+	.support = SCSI_SUPPORT_FULL,
+	.serv_action_valid = 1,
+	.opcode = PERSISTENT_RESERVE_OUT,
+	.service_action = PRO_PREEMPT_AND_ABORT,
+	.cdb_size = 10,
+	.usage_bits = {PERSISTENT_RESERVE_OUT, PRO_PREEMPT_AND_ABORT, 0xff, 0x00,
+		       0x00, 0xff, 0xff, 0xff,
+		       0xff, SCSI_CONTROL_MASK},
+	.enabled = tcm_is_pr_enabled,
+};
+
+static struct target_opcode_descriptor tcm_opcode_pro_reg_ign_exist = {
+	.support = SCSI_SUPPORT_FULL,
+	.serv_action_valid = 1,
+	.opcode = PERSISTENT_RESERVE_OUT,
+	.service_action = PRO_REGISTER_AND_IGNORE_EXISTING_KEY,
+	.cdb_size = 10,
+	.usage_bits = {
+		PERSISTENT_RESERVE_OUT, PRO_REGISTER_AND_IGNORE_EXISTING_KEY,
+		0xff, 0x00,
+		0x00, 0xff, 0xff, 0xff,
+		0xff, SCSI_CONTROL_MASK},
+	.enabled = tcm_is_pr_enabled,
+};
+
+static struct target_opcode_descriptor tcm_opcode_pro_register_move = {
+	.support = SCSI_SUPPORT_FULL,
+	.serv_action_valid = 1,
+	.opcode = PERSISTENT_RESERVE_OUT,
+	.service_action = PRO_REGISTER_AND_MOVE,
+	.cdb_size = 10,
+	.usage_bits = {PERSISTENT_RESERVE_OUT, PRO_REGISTER_AND_MOVE, 0xff, 0x00,
+		       0x00, 0xff, 0xff, 0xff,
+		       0xff, SCSI_CONTROL_MASK},
+	.enabled = tcm_is_pr_enabled,
+};
+
+static bool tcm_is_scsi2_reservations_enabled(struct se_cmd *cmd)
+{
+	struct se_device *dev = cmd->se_dev;
+
+	return dev->dev_attrib.emulate_pr;
+}
+
+static struct target_opcode_descriptor tcm_opcode_release = {
+	.support = SCSI_SUPPORT_FULL,
+	.opcode = RELEASE,
+	.cdb_size = 6,
+	.usage_bits = {RELEASE, 0x00, 0x00, 0x00,
+		       0x00, SCSI_CONTROL_MASK},
+	.enabled = tcm_is_scsi2_reservations_enabled,
+};
+
+static struct target_opcode_descriptor tcm_opcode_release10 = {
+	.support = SCSI_SUPPORT_FULL,
+	.opcode = RELEASE_10,
+	.cdb_size = 10,
+	.usage_bits = {RELEASE_10, 0x00, 0x00, 0x00,
+		       0x00, 0x00, 0x00, 0xff,
+		       0xff, SCSI_CONTROL_MASK},
+	.enabled = tcm_is_scsi2_reservations_enabled,
+};
+
+static struct target_opcode_descriptor tcm_opcode_reserve = {
+	.support = SCSI_SUPPORT_FULL,
+	.opcode = RESERVE,
+	.cdb_size = 6,
+	.usage_bits = {RESERVE, 0x00, 0x00, 0x00,
+		       0x00, SCSI_CONTROL_MASK},
+	.enabled = tcm_is_scsi2_reservations_enabled,
+};
+
+static struct target_opcode_descriptor tcm_opcode_reserve10 = {
+	.support = SCSI_SUPPORT_FULL,
+	.opcode = RESERVE_10,
+	.cdb_size = 10,
+	.usage_bits = {RESERVE_10, 0x00, 0x00, 0x00,
+		       0x00, 0x00, 0x00, 0xff,
+		       0xff, SCSI_CONTROL_MASK},
+	.enabled = tcm_is_scsi2_reservations_enabled,
+};
+
+static struct target_opcode_descriptor tcm_opcode_request_sense = {
+	.support = SCSI_SUPPORT_FULL,
+	.opcode = REQUEST_SENSE,
+	.cdb_size = 6,
+	.usage_bits = {REQUEST_SENSE, 0x00, 0x00, 0x00,
+		       0xff, SCSI_CONTROL_MASK},
+};
+
+static struct target_opcode_descriptor tcm_opcode_inquiry = {
+	.support = SCSI_SUPPORT_FULL,
+	.opcode = INQUIRY,
+	.cdb_size = 6,
+	.usage_bits = {INQUIRY, 0x01, 0xff, 0xff,
+		       0xff, SCSI_CONTROL_MASK},
+};
+
+static bool tcm_is_3pc_enabled(struct se_cmd *cmd)
+{
+	struct se_device *dev = cmd->se_dev;
+
+	return dev->dev_attrib.emulate_3pc;
+}
+
+static struct target_opcode_descriptor tcm_opcode_extended_copy_lid1 = {
+	.support = SCSI_SUPPORT_FULL,
+	.serv_action_valid = 1,
+	.opcode = EXTENDED_COPY,
+	.cdb_size = 16,
+	.usage_bits = {EXTENDED_COPY, 0x00, 0x00, 0x00,
+		       0x00, 0x00, 0x00, 0x00,
+		       0x00, 0x00, 0xff, 0xff,
+		       0xff, 0xff, 0x00, SCSI_CONTROL_MASK},
+	.enabled = tcm_is_3pc_enabled,
+};
+
+static struct target_opcode_descriptor tcm_opcode_rcv_copy_res_op_params = {
+	.support = SCSI_SUPPORT_FULL,
+	.serv_action_valid = 1,
+	.opcode = RECEIVE_COPY_RESULTS,
+	.service_action = RCR_SA_OPERATING_PARAMETERS,
+	.cdb_size = 16,
+	.usage_bits = {RECEIVE_COPY_RESULTS, RCR_SA_OPERATING_PARAMETERS,
+		       0x00, 0x00,
+		       0x00, 0x00, 0x00, 0x00,
+		       0x00, 0x00, 0xff, 0xff,
+		       0xff, 0xff, 0x00, SCSI_CONTROL_MASK},
+	.enabled = tcm_is_3pc_enabled,
+};
+
+static struct target_opcode_descriptor tcm_opcode_report_luns = {
+	.support = SCSI_SUPPORT_FULL,
+	.opcode = REPORT_LUNS,
+	.cdb_size = 12,
+	.usage_bits = {REPORT_LUNS, 0x00, 0xff, 0x00,
+		       0x00, 0x00, 0xff, 0xff,
+		       0xff, 0xff, 0x00, SCSI_CONTROL_MASK},
+};
+
+static struct target_opcode_descriptor tcm_opcode_test_unit_ready = {
+	.support = SCSI_SUPPORT_FULL,
+	.opcode = TEST_UNIT_READY,
+	.cdb_size = 6,
+	.usage_bits = {TEST_UNIT_READY, 0x00, 0x00, 0x00,
+		       0x00, SCSI_CONTROL_MASK},
+};
+
+static struct target_opcode_descriptor tcm_opcode_report_target_pgs = {
+	.support = SCSI_SUPPORT_FULL,
+	.serv_action_valid = 1,
+	.opcode = MAINTENANCE_IN,
+	.service_action = MI_REPORT_TARGET_PGS,
+	.cdb_size = 12,
+	.usage_bits = {MAINTENANCE_IN, 0xE0 | MI_REPORT_TARGET_PGS, 0x00, 0x00,
+		       0x00, 0x00, 0xff, 0xff,
+		       0xff, 0xff, 0x00, SCSI_CONTROL_MASK},
+};
+
+
+static bool spc_rsoc_enabled(struct se_cmd *cmd)
+{
+	struct se_device *dev = cmd->se_dev;
+
+	return dev->dev_attrib.emulate_rsoc;
+}
+
+static struct target_opcode_descriptor tcm_opcode_report_supp_opcodes = {
+	.support = SCSI_SUPPORT_FULL,
+	.serv_action_valid = 1,
+	.opcode = MAINTENANCE_IN,
+	.service_action = MI_REPORT_SUPPORTED_OPERATION_CODES,
+	.cdb_size = 12,
+	.usage_bits = {MAINTENANCE_IN, MI_REPORT_SUPPORTED_OPERATION_CODES,
+		       0x87, 0xff,
+		       0xff, 0xff, 0xff, 0xff,
+		       0xff, 0xff, 0x00, SCSI_CONTROL_MASK},
+	.enabled = spc_rsoc_enabled,
+};
+
+static bool tcm_is_set_tpg_enabled(struct se_cmd *cmd)
+{
+	struct t10_alua_tg_pt_gp *l_tg_pt_gp;
+	struct se_lun *l_lun = cmd->se_lun;
+
+	rcu_read_lock();
+	l_tg_pt_gp = rcu_dereference(l_lun->lun_tg_pt_gp);
+	if (!l_tg_pt_gp) {
+		rcu_read_unlock();
+		return false;
+	}
+	if (!(l_tg_pt_gp->tg_pt_gp_alua_access_type & TPGS_EXPLICIT_ALUA)) {
+		rcu_read_unlock();
+		return false;
+	}
+	rcu_read_unlock();
+
+	return true;
+}
+
+static struct target_opcode_descriptor tcm_opcode_set_tpg = {
+	.support = SCSI_SUPPORT_FULL,
+	.serv_action_valid = 1,
+	.opcode = MAINTENANCE_OUT,
+	.service_action = MO_SET_TARGET_PGS,
+	.cdb_size = 12,
+	.usage_bits = {MAINTENANCE_OUT, MO_SET_TARGET_PGS, 0x00, 0x00,
+		       0x00, 0x00, 0xff, 0xff,
+		       0xff, 0xff, 0x00, SCSI_CONTROL_MASK},
+	.enabled = tcm_is_set_tpg_enabled,
+};
+
+static struct target_opcode_descriptor *tcm_supported_opcodes[] = {
+	&tcm_opcode_read6,
+	&tcm_opcode_read10,
+	&tcm_opcode_read12,
+	&tcm_opcode_read16,
+	&tcm_opcode_write6,
+	&tcm_opcode_write10,
+	&tcm_opcode_write_verify10,
+	&tcm_opcode_write12,
+	&tcm_opcode_write16,
+	&tcm_opcode_write_verify16,
+	&tcm_opcode_write_same32,
+	&tcm_opcode_compare_write,
+	&tcm_opcode_read_capacity,
+	&tcm_opcode_read_capacity16,
+	&tcm_opcode_read_report_refferals,
+	&tcm_opcode_sync_cache,
+	&tcm_opcode_sync_cache16,
+	&tcm_opcode_unmap,
+	&tcm_opcode_write_same,
+	&tcm_opcode_write_same16,
+	&tcm_opcode_verify,
+	&tcm_opcode_verify16,
+	&tcm_opcode_start_stop,
+	&tcm_opcode_mode_select,
+	&tcm_opcode_mode_select10,
+	&tcm_opcode_mode_sense,
+	&tcm_opcode_mode_sense10,
+	&tcm_opcode_pri_read_keys,
+	&tcm_opcode_pri_read_resrv,
+	&tcm_opcode_pri_read_caps,
+	&tcm_opcode_pri_read_full_status,
+	&tcm_opcode_pro_register,
+	&tcm_opcode_pro_reserve,
+	&tcm_opcode_pro_release,
+	&tcm_opcode_pro_clear,
+	&tcm_opcode_pro_preempt,
+	&tcm_opcode_pro_preempt_abort,
+	&tcm_opcode_pro_reg_ign_exist,
+	&tcm_opcode_pro_register_move,
+	&tcm_opcode_release,
+	&tcm_opcode_release10,
+	&tcm_opcode_reserve,
+	&tcm_opcode_reserve10,
+	&tcm_opcode_request_sense,
+	&tcm_opcode_inquiry,
+	&tcm_opcode_extended_copy_lid1,
+	&tcm_opcode_rcv_copy_res_op_params,
+	&tcm_opcode_report_luns,
+	&tcm_opcode_test_unit_ready,
+	&tcm_opcode_report_target_pgs,
+	&tcm_opcode_report_supp_opcodes,
+	&tcm_opcode_set_tpg,
+};
+
+static int
+spc_rsoc_encode_command_timeouts_descriptor(unsigned char *buf, u8 ctdp,
+				struct target_opcode_descriptor *descr)
+{
+	if (!ctdp)
+		return 0;
+
+	put_unaligned_be16(0xa, buf);
+	buf[3] = descr->specific_timeout;
+	put_unaligned_be32(descr->nominal_timeout, &buf[4]);
+	put_unaligned_be32(descr->recommended_timeout, &buf[8]);
+
+	return 12;
+}
+
+static int
+spc_rsoc_encode_command_descriptor(unsigned char *buf, u8 ctdp,
+				   struct target_opcode_descriptor *descr)
+{
+	int td_size = 0;
+
+	buf[0] = descr->opcode;
+
+	put_unaligned_be16(descr->service_action, &buf[2]);
+
+	buf[5] = (ctdp << 1) | descr->serv_action_valid;
+	put_unaligned_be16(descr->cdb_size, &buf[6]);
+
+	td_size = spc_rsoc_encode_command_timeouts_descriptor(&buf[8], ctdp,
+							      descr);
+
+	return 8 + td_size;
+}
+
+static int
+spc_rsoc_encode_one_command_descriptor(unsigned char *buf, u8 ctdp,
+				       struct target_opcode_descriptor *descr,
+				       struct se_device *dev)
+{
+	int td_size = 0;
+
+	if (!descr) {
+		buf[1] = (ctdp << 7) | SCSI_SUPPORT_NOT_SUPPORTED;
+		return 2;
+	}
+
+	buf[1] = (ctdp << 7) | SCSI_SUPPORT_FULL;
+	put_unaligned_be16(descr->cdb_size, &buf[2]);
+	memcpy(&buf[4], descr->usage_bits, descr->cdb_size);
+	if (descr->update_usage_bits)
+		descr->update_usage_bits(&buf[4], dev);
+
+	td_size = spc_rsoc_encode_command_timeouts_descriptor(
+			&buf[4 + descr->cdb_size], ctdp, descr);
+
+	return 4 + descr->cdb_size + td_size;
+}
+
+static sense_reason_t
+spc_rsoc_get_descr(struct se_cmd *cmd, struct target_opcode_descriptor **opcode)
+{
+	struct target_opcode_descriptor *descr;
+	struct se_session *sess = cmd->se_sess;
+	unsigned char *cdb = cmd->t_task_cdb;
+	u8 opts = cdb[2] & 0x3;
+	u8 requested_opcode;
+	u16 requested_sa;
+	int i;
+
+	requested_opcode = cdb[3];
+	requested_sa = ((u16)cdb[4]) << 8 | cdb[5];
+	*opcode = NULL;
+
+	if (opts > 3) {
+		pr_debug("TARGET_CORE[%s]: Invalid REPORT SUPPORTED OPERATION CODES"
+			" with unsupported REPORTING OPTIONS %#x for 0x%08llx from %s\n",
+			cmd->se_tfo->fabric_name, opts,
+			cmd->se_lun->unpacked_lun,
+			sess->se_node_acl->initiatorname);
+		return TCM_INVALID_CDB_FIELD;
+	}
+
+	for (i = 0; i < ARRAY_SIZE(tcm_supported_opcodes); i++) {
+		descr = tcm_supported_opcodes[i];
+		if (descr->opcode != requested_opcode)
+			continue;
+
+		switch (opts) {
+		case 0x1:
+			/*
+			 * If the REQUESTED OPERATION CODE field specifies an
+			 * operation code for which the device server implements
+			 * service actions, then the device server shall
+			 * terminate the command with CHECK CONDITION status,
+			 * with the sense key set to ILLEGAL REQUEST, and the
+			 * additional sense code set to INVALID FIELD IN CDB
+			 */
+			if (descr->serv_action_valid)
+				return TCM_INVALID_CDB_FIELD;
+
+			if (!descr->enabled || descr->enabled(cmd))
+				*opcode = descr;
+			break;
+		case 0x2:
+			/*
+			 * If the REQUESTED OPERATION CODE field specifies an
+			 * operation code for which the device server does not
+			 * implement service actions, then the device server
+			 * shall terminate the command with CHECK CONDITION
+			 * status, with the sense key set to ILLEGAL REQUEST,
+			 * and the additional sense code set to INVALID FIELD IN CDB.
+			 */
+			if (descr->serv_action_valid &&
+			    descr->service_action == requested_sa) {
+				if (!descr->enabled || descr->enabled(cmd))
+					*opcode = descr;
+			} else if (!descr->serv_action_valid)
+				return TCM_INVALID_CDB_FIELD;
+			break;
+		case 0x3:
+			/*
+			 * The command support data for the operation code and
+			 * service action a specified in the REQUESTED OPERATION
+			 * CODE field and REQUESTED SERVICE ACTION field shall
+			 * be returned in the one_command parameter data format.
+			 */
+			if (descr->service_action == requested_sa)
+				if (!descr->enabled || descr->enabled(cmd))
+					*opcode = descr;
+			break;
+		}
+	}
+
+	return 0;
+}
+
+static sense_reason_t
+spc_emulate_report_supp_op_codes(struct se_cmd *cmd)
+{
+	int descr_num = ARRAY_SIZE(tcm_supported_opcodes);
+	struct target_opcode_descriptor *descr = NULL;
+	unsigned char *cdb = cmd->t_task_cdb;
+	u8 rctd = (cdb[2] >> 7) & 0x1;
+	unsigned char *buf = NULL;
+	int response_length = 0;
+	u8 opts = cdb[2] & 0x3;
+	unsigned char *rbuf;
+	sense_reason_t ret = 0;
+	int i;
+
+	if (!cmd->se_dev->dev_attrib.emulate_rsoc)
+		return TCM_UNSUPPORTED_SCSI_OPCODE;
+
+	rbuf = transport_kmap_data_sg(cmd);
+	if (cmd->data_length && !rbuf) {
+		ret = TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
+		goto out;
+	}
+
+	if (opts == 0)
+		response_length = 4 + (8 + rctd * 12) * descr_num;
+	else {
+		ret = spc_rsoc_get_descr(cmd, &descr);
+		if (ret)
+			goto out;
+
+		if (descr)
+			response_length = 4 + descr->cdb_size + rctd * 12;
+		else
+			response_length = 2;
+	}
+
+	buf = kzalloc(response_length, GFP_KERNEL);
+	if (!buf) {
+		ret = TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
+		goto out;
+	}
+	response_length = 0;
+
+	if (opts == 0) {
+		response_length += 4;
+
+		for (i = 0; i < ARRAY_SIZE(tcm_supported_opcodes); i++) {
+			descr = tcm_supported_opcodes[i];
+			if (descr->enabled && !descr->enabled(cmd))
+				continue;
+
+			response_length += spc_rsoc_encode_command_descriptor(
+					&buf[response_length], rctd, descr);
+		}
+		put_unaligned_be32(response_length - 3, buf);
+	} else {
+		response_length = spc_rsoc_encode_one_command_descriptor(
+				&buf[response_length], rctd, descr,
+				cmd->se_dev);
+	}
+
+	memcpy(rbuf, buf, min_t(u32, response_length, cmd->data_length));
+out:
+	kfree(buf);
+	transport_kunmap_data_sg(cmd);
+
+	if (!ret)
+		target_complete_cmd_with_length(cmd, SAM_STAT_GOOD, response_length);
+	return ret;
+}
+
 sense_reason_t
 spc_parse_cdb(struct se_cmd *cmd, unsigned int *size)
 {
@@ -1439,6 +2355,10 @@ spc_parse_cdb(struct se_cmd *cmd, unsigned int *size)
 				cmd->execute_cmd =
 					target_emulate_report_target_port_groups;
 			}
+			if ((cdb[1] & 0x1f) ==
+			    MI_REPORT_SUPPORTED_OPERATION_CODES)
+				cmd->execute_cmd =
+					spc_emulate_report_supp_op_codes;
 			*size = get_unaligned_be32(&cdb[6]);
 		} else {
 			/*
diff --git a/drivers/target/target_core_xcopy.c b/drivers/target/target_core_xcopy.c
index 8713cda0c2fb..49eaee022ef1 100644
--- a/drivers/target/target_core_xcopy.c
+++ b/drivers/target/target_core_xcopy.c
@@ -582,11 +582,11 @@ static int target_xcopy_read_source(
 	struct xcopy_op *xop,
 	struct se_device *src_dev,
 	sector_t src_lba,
-	u32 src_sectors)
+	u32 src_bytes)
 {
 	struct xcopy_pt_cmd xpt_cmd;
 	struct se_cmd *se_cmd = &xpt_cmd.se_cmd;
-	u32 length = (src_sectors * src_dev->dev_attrib.block_size);
+	u32 transfer_length_block = src_bytes / src_dev->dev_attrib.block_size;
 	int rc;
 	unsigned char cdb[16];
 	bool remote_port = (xop->op_origin == XCOL_DEST_RECV_OP);
@@ -597,11 +597,11 @@ static int target_xcopy_read_source(
 	memset(&cdb[0], 0, 16);
 	cdb[0] = READ_16;
 	put_unaligned_be64(src_lba, &cdb[2]);
-	put_unaligned_be32(src_sectors, &cdb[10]);
-	pr_debug("XCOPY: Built READ_16: LBA: %llu Sectors: %u Length: %u\n",
-		(unsigned long long)src_lba, src_sectors, length);
+	put_unaligned_be32(transfer_length_block, &cdb[10]);
+	pr_debug("XCOPY: Built READ_16: LBA: %llu Blocks: %u Length: %u\n",
+		(unsigned long long)src_lba, transfer_length_block, src_bytes);
 
-	__target_init_cmd(se_cmd, &xcopy_pt_tfo, &xcopy_pt_sess, length,
+	__target_init_cmd(se_cmd, &xcopy_pt_tfo, &xcopy_pt_sess, src_bytes,
 			  DMA_FROM_DEVICE, 0, &xpt_cmd.sense_buffer[0], 0);
 
 	rc = target_xcopy_setup_pt_cmd(&xpt_cmd, xop, src_dev, &cdb[0],
@@ -627,11 +627,11 @@ static int target_xcopy_write_destination(
 	struct xcopy_op *xop,
 	struct se_device *dst_dev,
 	sector_t dst_lba,
-	u32 dst_sectors)
+	u32 dst_bytes)
 {
 	struct xcopy_pt_cmd xpt_cmd;
 	struct se_cmd *se_cmd = &xpt_cmd.se_cmd;
-	u32 length = (dst_sectors * dst_dev->dev_attrib.block_size);
+	u32 transfer_length_block = dst_bytes / dst_dev->dev_attrib.block_size;
 	int rc;
 	unsigned char cdb[16];
 	bool remote_port = (xop->op_origin == XCOL_SOURCE_RECV_OP);
@@ -642,11 +642,11 @@ static int target_xcopy_write_destination(
 	memset(&cdb[0], 0, 16);
 	cdb[0] = WRITE_16;
 	put_unaligned_be64(dst_lba, &cdb[2]);
-	put_unaligned_be32(dst_sectors, &cdb[10]);
-	pr_debug("XCOPY: Built WRITE_16: LBA: %llu Sectors: %u Length: %u\n",
-		(unsigned long long)dst_lba, dst_sectors, length);
+	put_unaligned_be32(transfer_length_block, &cdb[10]);
+	pr_debug("XCOPY: Built WRITE_16: LBA: %llu Blocks: %u Length: %u\n",
+		(unsigned long long)dst_lba, transfer_length_block, dst_bytes);
 
-	__target_init_cmd(se_cmd, &xcopy_pt_tfo, &xcopy_pt_sess, length,
+	__target_init_cmd(se_cmd, &xcopy_pt_tfo, &xcopy_pt_sess, dst_bytes,
 			  DMA_TO_DEVICE, 0, &xpt_cmd.sense_buffer[0], 0);
 
 	rc = target_xcopy_setup_pt_cmd(&xpt_cmd, xop, dst_dev, &cdb[0],
@@ -670,9 +670,10 @@ static void target_xcopy_do_work(struct work_struct *work)
 	struct se_cmd *ec_cmd = xop->xop_se_cmd;
 	struct se_device *src_dev, *dst_dev;
 	sector_t src_lba, dst_lba, end_lba;
-	unsigned int max_sectors;
+	unsigned long long max_bytes, max_bytes_src, max_bytes_dst, max_blocks;
 	int rc = 0;
-	unsigned short nolb, max_nolb, copied_nolb = 0;
+	unsigned short nolb;
+	unsigned int copied_bytes = 0;
 	sense_reason_t sense_rc;
 
 	sense_rc = target_parse_xcopy_cmd(xop);
@@ -691,23 +692,31 @@ static void target_xcopy_do_work(struct work_struct *work)
 	nolb = xop->nolb;
 	end_lba = src_lba + nolb;
 	/*
-	 * Break up XCOPY I/O into hw_max_sectors sized I/O based on the
-	 * smallest max_sectors between src_dev + dev_dev, or
+	 * Break up XCOPY I/O into hw_max_sectors * hw_block_size sized
+	 * I/O based on the smallest max_bytes between src_dev + dst_dev
 	 */
-	max_sectors = min(src_dev->dev_attrib.hw_max_sectors,
-			  dst_dev->dev_attrib.hw_max_sectors);
-	max_sectors = min_t(u32, max_sectors, XCOPY_MAX_SECTORS);
+	max_bytes_src = (unsigned long long) src_dev->dev_attrib.hw_max_sectors *
+			src_dev->dev_attrib.hw_block_size;
+	max_bytes_dst = (unsigned long long) dst_dev->dev_attrib.hw_max_sectors *
+			dst_dev->dev_attrib.hw_block_size;
 
-	max_nolb = min_t(u16, max_sectors, ((u16)(~0U)));
+	max_bytes = min_t(u64, max_bytes_src, max_bytes_dst);
+	max_bytes = min_t(u64, max_bytes, XCOPY_MAX_BYTES);
 
-	pr_debug("target_xcopy_do_work: nolb: %hu, max_nolb: %hu end_lba: %llu\n",
-			nolb, max_nolb, (unsigned long long)end_lba);
-	pr_debug("target_xcopy_do_work: Starting src_lba: %llu, dst_lba: %llu\n",
+	/*
+	 * Using shift instead of the division because otherwise GCC
+	 * generates __udivdi3 that is missing on i386
+	 */
+	max_blocks = max_bytes >> ilog2(src_dev->dev_attrib.block_size);
+
+	pr_debug("%s: nolb: %u, max_blocks: %llu end_lba: %llu\n", __func__,
+			nolb, max_blocks, (unsigned long long)end_lba);
+	pr_debug("%s: Starting src_lba: %llu, dst_lba: %llu\n", __func__,
 			(unsigned long long)src_lba, (unsigned long long)dst_lba);
 
-	while (src_lba < end_lba) {
-		unsigned short cur_nolb = min(nolb, max_nolb);
-		u32 cur_bytes = cur_nolb * src_dev->dev_attrib.block_size;
+	while (nolb) {
+		u32 cur_bytes = min_t(u64, max_bytes, nolb * src_dev->dev_attrib.block_size);
+		unsigned short cur_nolb = cur_bytes / src_dev->dev_attrib.block_size;
 
 		if (cur_bytes != xop->xop_data_bytes) {
 			/*
@@ -724,43 +733,43 @@ static void target_xcopy_do_work(struct work_struct *work)
 			xop->xop_data_bytes = cur_bytes;
 		}
 
-		pr_debug("target_xcopy_do_work: Calling read src_dev: %p src_lba: %llu,"
-			" cur_nolb: %hu\n", src_dev, (unsigned long long)src_lba, cur_nolb);
+		pr_debug("%s: Calling read src_dev: %p src_lba: %llu, cur_nolb: %hu\n",
+				__func__, src_dev, (unsigned long long)src_lba, cur_nolb);
 
-		rc = target_xcopy_read_source(ec_cmd, xop, src_dev, src_lba, cur_nolb);
+		rc = target_xcopy_read_source(ec_cmd, xop, src_dev, src_lba, cur_bytes);
 		if (rc < 0)
 			goto out;
 
-		src_lba += cur_nolb;
-		pr_debug("target_xcopy_do_work: Incremented READ src_lba to %llu\n",
+		src_lba += cur_bytes / src_dev->dev_attrib.block_size;
+		pr_debug("%s: Incremented READ src_lba to %llu\n", __func__,
 				(unsigned long long)src_lba);
 
-		pr_debug("target_xcopy_do_work: Calling write dst_dev: %p dst_lba: %llu,"
-			" cur_nolb: %hu\n", dst_dev, (unsigned long long)dst_lba, cur_nolb);
+		pr_debug("%s: Calling write dst_dev: %p dst_lba: %llu, cur_nolb: %u\n",
+				__func__, dst_dev, (unsigned long long)dst_lba, cur_nolb);
 
 		rc = target_xcopy_write_destination(ec_cmd, xop, dst_dev,
-						dst_lba, cur_nolb);
+						dst_lba, cur_bytes);
 		if (rc < 0)
 			goto out;
 
-		dst_lba += cur_nolb;
-		pr_debug("target_xcopy_do_work: Incremented WRITE dst_lba to %llu\n",
+		dst_lba += cur_bytes / dst_dev->dev_attrib.block_size;
+		pr_debug("%s: Incremented WRITE dst_lba to %llu\n", __func__,
 				(unsigned long long)dst_lba);
 
-		copied_nolb += cur_nolb;
-		nolb -= cur_nolb;
+		copied_bytes += cur_bytes;
+		nolb -= cur_bytes / src_dev->dev_attrib.block_size;
 	}
 
 	xcopy_pt_undepend_remotedev(xop);
 	target_free_sgl(xop->xop_data_sg, xop->xop_data_nents);
 	kfree(xop);
 
-	pr_debug("target_xcopy_do_work: Final src_lba: %llu, dst_lba: %llu\n",
+	pr_debug("%s: Final src_lba: %llu, dst_lba: %llu\n", __func__,
 		(unsigned long long)src_lba, (unsigned long long)dst_lba);
-	pr_debug("target_xcopy_do_work: Blocks copied: %hu, Bytes Copied: %u\n",
-		copied_nolb, copied_nolb * dst_dev->dev_attrib.block_size);
+	pr_debug("%s: Blocks copied: %u, Bytes Copied: %u\n", __func__,
+		copied_bytes / dst_dev->dev_attrib.block_size, copied_bytes);
 
-	pr_debug("target_xcopy_do_work: Setting X-COPY GOOD status -> sending response\n");
+	pr_debug("%s: Setting X-COPY GOOD status -> sending response\n", __func__);
 	target_complete_cmd(ec_cmd, SAM_STAT_GOOD);
 	return;
 
@@ -776,8 +785,8 @@ out:
 
 err_free:
 	kfree(xop);
-	pr_warn_ratelimited("target_xcopy_do_work: rc: %d, sense: %u, XCOPY operation failed\n",
-			   rc, sense_rc);
+	pr_warn_ratelimited("%s: rc: %d, sense: %u, XCOPY operation failed\n",
+			   __func__, rc, sense_rc);
 	target_complete_cmd_with_sense(ec_cmd, SAM_STAT_CHECK_CONDITION, sense_rc);
 }
 
@@ -1009,8 +1018,14 @@ sense_reason_t target_do_receive_copy_results(struct se_cmd *se_cmd)
 {
 	unsigned char *cdb = &se_cmd->t_task_cdb[0];
 	int sa = (cdb[1] & 0x1f), list_id = cdb[2];
+	struct se_device *dev = se_cmd->se_dev;
 	sense_reason_t rc = TCM_NO_SENSE;
 
+	if (!dev->dev_attrib.emulate_3pc) {
+		pr_debug("Third-party copy operations explicitly disabled\n");
+		return TCM_UNSUPPORTED_SCSI_OPCODE;
+	}
+
 	pr_debug("Entering target_do_receive_copy_results: SA: 0x%02x, List ID:"
 		" 0x%02x, AL: %u\n", sa, list_id, se_cmd->data_length);
 
diff --git a/drivers/target/target_core_xcopy.h b/drivers/target/target_core_xcopy.h
index e5f20005179a..0aad7dc65895 100644
--- a/drivers/target/target_core_xcopy.h
+++ b/drivers/target/target_core_xcopy.h
@@ -5,7 +5,7 @@
 #define XCOPY_TARGET_DESC_LEN		32
 #define XCOPY_SEGMENT_DESC_LEN		28
 #define XCOPY_NAA_IEEE_REGEX_LEN	16
-#define XCOPY_MAX_SECTORS		4096
+#define XCOPY_MAX_BYTES			16777216 /* 16 MB */
 
 /*
  * SPC4r37 6.4.6.1
diff --git a/drivers/ufs/core/ufs-sysfs.c b/drivers/ufs/core/ufs-sysfs.c
index 53aea56d1de1..883f0e44b54e 100644
--- a/drivers/ufs/core/ufs-sysfs.c
+++ b/drivers/ufs/core/ufs-sysfs.c
@@ -1234,8 +1234,7 @@ static ssize_t _pname##_show(struct device *dev,			\
 	struct scsi_device *sdev = to_scsi_device(dev);			\
 	struct ufs_hba *hba = shost_priv(sdev->host);			\
 	u8 lun = ufshcd_scsi_to_upiu_lun(sdev->lun);			\
-	if (!ufs_is_valid_unit_desc_lun(&hba->dev_info, lun,		\
-				_duname##_DESC_PARAM##_puname))		\
+	if (!ufs_is_valid_unit_desc_lun(&hba->dev_info, lun))		\
 		return -EINVAL;						\
 	return ufs_sysfs_read_desc_param(hba, QUERY_DESC_IDN_##_duname,	\
 		lun, _duname##_DESC_PARAM##_puname, buf, _size);	\
@@ -1286,9 +1285,27 @@ static struct attribute *ufs_sysfs_unit_descriptor[] = {
 	NULL,
 };
 
+static umode_t ufs_unit_descriptor_is_visible(struct kobject *kobj, struct attribute *attr, int n)
+{
+	struct device *dev = container_of(kobj, struct device, kobj);
+	struct scsi_device *sdev = to_scsi_device(dev);
+	u8 lun = ufshcd_scsi_to_upiu_lun(sdev->lun);
+	umode_t mode = attr->mode;
+
+	if (lun == UFS_UPIU_BOOT_WLUN || lun == UFS_UPIU_UFS_DEVICE_WLUN)
+		/* Boot and device WLUN have no unit descriptors */
+		mode = 0;
+	if (lun == UFS_UPIU_RPMB_WLUN && attr == &dev_attr_wb_buf_alloc_units.attr)
+		mode = 0;
+
+	return mode;
+}
+
+
 const struct attribute_group ufs_sysfs_unit_descriptor_group = {
 	.name = "unit_descriptor",
 	.attrs = ufs_sysfs_unit_descriptor,
+	.is_visible = ufs_unit_descriptor_is_visible,
 };
 
 static ssize_t dyn_cap_needed_attribute_show(struct device *dev,
diff --git a/drivers/ufs/core/ufshcd-priv.h b/drivers/ufs/core/ufshcd-priv.h
index f68ca33f6ac7..a9e8e1f5afe7 100644
--- a/drivers/ufs/core/ufshcd-priv.h
+++ b/drivers/ufs/core/ufshcd-priv.h
@@ -293,16 +293,12 @@ static inline int ufshcd_rpm_put(struct ufs_hba *hba)
  * @lun: LU number to check
  * @return: true if the lun has a matching unit descriptor, false otherwise
  */
-static inline bool ufs_is_valid_unit_desc_lun(struct ufs_dev_info *dev_info,
-		u8 lun, u8 param_offset)
+static inline bool ufs_is_valid_unit_desc_lun(struct ufs_dev_info *dev_info, u8 lun)
 {
 	if (!dev_info || !dev_info->max_lu_supported) {
 		pr_err("Max General LU supported by UFS isn't initialized\n");
 		return false;
 	}
-	/* WB is available only for the logical unit from 0 to 7 */
-	if (param_offset == UNIT_DESC_PARAM_WB_BUF_ALLOC_UNITS)
-		return lun < UFS_UPIU_MAX_WB_LUN_ID;
 	return lun == UFS_UPIU_RPMB_WLUN || (lun < dev_info->max_lu_supported);
 }
 
diff --git a/drivers/ufs/core/ufshcd.c b/drivers/ufs/core/ufshcd.c
index d2b11d5b91ce..e18c9f4463ec 100644
--- a/drivers/ufs/core/ufshcd.c
+++ b/drivers/ufs/core/ufshcd.c
@@ -486,6 +486,9 @@ static void ufshcd_print_evt_hist(struct ufs_hba *hba)
 	ufshcd_print_evt(hba, UFS_EVT_RESUME_ERR, "resume_fail");
 	ufshcd_print_evt(hba, UFS_EVT_SUSPEND_ERR,
 			 "suspend_fail");
+	ufshcd_print_evt(hba, UFS_EVT_WL_RES_ERR, "wlun resume_fail");
+	ufshcd_print_evt(hba, UFS_EVT_WL_SUSP_ERR,
+			 "wlun suspend_fail");
 	ufshcd_print_evt(hba, UFS_EVT_DEV_RESET, "dev_reset");
 	ufshcd_print_evt(hba, UFS_EVT_HOST_RESET, "host_reset");
 	ufshcd_print_evt(hba, UFS_EVT_ABORT, "task_abort");
@@ -2013,7 +2016,6 @@ static void ufshcd_exit_clk_gating(struct ufs_hba *hba)
 	destroy_workqueue(hba->clk_gating.clk_gating_workq);
 }
 
-/* Must be called with host lock acquired */
 static void ufshcd_clk_scaling_start_busy(struct ufs_hba *hba)
 {
 	bool queue_resume_work = false;
@@ -3606,7 +3608,7 @@ static inline int ufshcd_read_unit_desc_param(struct ufs_hba *hba,
 	 * Unit descriptors are only available for general purpose LUs (LUN id
 	 * from 0 to 7) and RPMB Well known LU.
 	 */
-	if (!ufs_is_valid_unit_desc_lun(&hba->dev_info, lun, param_offset))
+	if (!ufs_is_valid_unit_desc_lun(&hba->dev_info, lun))
 		return -EOPNOTSUPP;
 
 	return ufshcd_read_desc_param(hba, QUERY_DESC_IDN_UNIT, lun,
@@ -4478,7 +4480,7 @@ static int ufshcd_complete_dev_init(struct ufs_hba *hba)
 		QUERY_FLAG_IDN_FDEVICEINIT, 0, NULL);
 	if (err) {
 		dev_err(hba->dev,
-			"%s setting fDeviceInit flag failed with error %d\n",
+			"%s: setting fDeviceInit flag failed with error %d\n",
 			__func__, err);
 		goto out;
 	}
@@ -4495,11 +4497,11 @@ static int ufshcd_complete_dev_init(struct ufs_hba *hba)
 
 	if (err) {
 		dev_err(hba->dev,
-				"%s reading fDeviceInit flag failed with error %d\n",
+				"%s: reading fDeviceInit flag failed with error %d\n",
 				__func__, err);
 	} else if (flag_res) {
 		dev_err(hba->dev,
-				"%s fDeviceInit was not cleared by the device\n",
+				"%s: fDeviceInit was not cleared by the device\n",
 				__func__);
 		err = -EBUSY;
 	}
@@ -4666,14 +4668,18 @@ int ufshcd_hba_enable(struct ufs_hba *hba)
 		/* enable UIC related interrupts */
 		ufshcd_enable_intr(hba, UFSHCD_UIC_MASK);
 		ret = ufshcd_dme_reset(hba);
-		if (!ret) {
-			ret = ufshcd_dme_enable(hba);
-			if (!ret)
-				ufshcd_vops_hce_enable_notify(hba, POST_CHANGE);
-			if (ret)
-				dev_err(hba->dev,
-					"Host controller enable failed with non-hce\n");
+		if (ret) {
+			dev_err(hba->dev, "DME_RESET failed\n");
+			return ret;
+		}
+
+		ret = ufshcd_dme_enable(hba);
+		if (ret) {
+			dev_err(hba->dev, "Enabling DME failed\n");
+			return ret;
 		}
+
+		ufshcd_vops_hce_enable_notify(hba, POST_CHANGE);
 	} else {
 		ret = ufshcd_hba_execute_hce(hba);
 	}
@@ -4860,100 +4866,6 @@ static int ufshcd_verify_dev_init(struct ufs_hba *hba)
 }
 
 /**
- * ufshcd_set_queue_depth - set lun queue depth
- * @sdev: pointer to SCSI device
- *
- * Read bLUQueueDepth value and activate scsi tagged command
- * queueing. For WLUN, queue depth is set to 1. For best-effort
- * cases (bLUQueueDepth = 0) the queue depth is set to a maximum
- * value that host can queue.
- */
-static void ufshcd_set_queue_depth(struct scsi_device *sdev)
-{
-	int ret = 0;
-	u8 lun_qdepth;
-	struct ufs_hba *hba;
-
-	hba = shost_priv(sdev->host);
-
-	lun_qdepth = hba->nutrs;
-	ret = ufshcd_read_unit_desc_param(hba,
-					  ufshcd_scsi_to_upiu_lun(sdev->lun),
-					  UNIT_DESC_PARAM_LU_Q_DEPTH,
-					  &lun_qdepth,
-					  sizeof(lun_qdepth));
-
-	/* Some WLUN doesn't support unit descriptor */
-	if (ret == -EOPNOTSUPP)
-		lun_qdepth = 1;
-	else if (!lun_qdepth)
-		/* eventually, we can figure out the real queue depth */
-		lun_qdepth = hba->nutrs;
-	else
-		lun_qdepth = min_t(int, lun_qdepth, hba->nutrs);
-
-	dev_dbg(hba->dev, "%s: activate tcq with queue depth %d\n",
-			__func__, lun_qdepth);
-	scsi_change_queue_depth(sdev, lun_qdepth);
-}
-
-/*
- * ufshcd_get_lu_wp - returns the "b_lu_write_protect" from UNIT DESCRIPTOR
- * @hba: per-adapter instance
- * @lun: UFS device lun id
- * @b_lu_write_protect: pointer to buffer to hold the LU's write protect info
- *
- * Returns 0 in case of success and b_lu_write_protect status would be returned
- * @b_lu_write_protect parameter.
- * Returns -ENOTSUPP if reading b_lu_write_protect is not supported.
- * Returns -EINVAL in case of invalid parameters passed to this function.
- */
-static int ufshcd_get_lu_wp(struct ufs_hba *hba,
-			    u8 lun,
-			    u8 *b_lu_write_protect)
-{
-	int ret;
-
-	if (!b_lu_write_protect)
-		ret = -EINVAL;
-	/*
-	 * According to UFS device spec, RPMB LU can't be write
-	 * protected so skip reading bLUWriteProtect parameter for
-	 * it. For other W-LUs, UNIT DESCRIPTOR is not available.
-	 */
-	else if (lun >= hba->dev_info.max_lu_supported)
-		ret = -ENOTSUPP;
-	else
-		ret = ufshcd_read_unit_desc_param(hba,
-					  lun,
-					  UNIT_DESC_PARAM_LU_WR_PROTECT,
-					  b_lu_write_protect,
-					  sizeof(*b_lu_write_protect));
-	return ret;
-}
-
-/**
- * ufshcd_get_lu_power_on_wp_status - get LU's power on write protect
- * status
- * @hba: per-adapter instance
- * @sdev: pointer to SCSI device
- *
- */
-static inline void ufshcd_get_lu_power_on_wp_status(struct ufs_hba *hba,
-						    const struct scsi_device *sdev)
-{
-	if (hba->dev_info.f_power_on_wp_en &&
-	    !hba->dev_info.is_lu_power_on_wp) {
-		u8 b_lu_write_protect;
-
-		if (!ufshcd_get_lu_wp(hba, ufshcd_scsi_to_upiu_lun(sdev->lun),
-				      &b_lu_write_protect) &&
-		    (b_lu_write_protect == UFS_LU_POWER_ON_WP))
-			hba->dev_info.is_lu_power_on_wp = true;
-	}
-}
-
-/**
  * ufshcd_setup_links - associate link b/w device wlun and other luns
  * @sdev: pointer to SCSI device
  * @hba: pointer to ufs hba
@@ -4991,6 +4903,58 @@ static void ufshcd_setup_links(struct ufs_hba *hba, struct scsi_device *sdev)
 }
 
 /**
+ * ufshcd_lu_init - Initialize the relevant parameters of the LU
+ * @hba: per-adapter instance
+ * @sdev: pointer to SCSI device
+ */
+static void ufshcd_lu_init(struct ufs_hba *hba, struct scsi_device *sdev)
+{
+	int len = hba->desc_size[QUERY_DESC_IDN_UNIT];
+	u8 lun = ufshcd_scsi_to_upiu_lun(sdev->lun);
+	u8 lun_qdepth = hba->nutrs;
+	u8 *desc_buf;
+	int ret;
+
+	desc_buf = kzalloc(len, GFP_KERNEL);
+	if (!desc_buf)
+		goto set_qdepth;
+
+	ret = ufshcd_read_unit_desc_param(hba, lun, 0, desc_buf, len);
+	if (ret < 0) {
+		if (ret == -EOPNOTSUPP)
+			/* If LU doesn't support unit descriptor, its queue depth is set to 1 */
+			lun_qdepth = 1;
+		kfree(desc_buf);
+		goto set_qdepth;
+	}
+
+	if (desc_buf[UNIT_DESC_PARAM_LU_Q_DEPTH]) {
+		/*
+		 * In per-LU queueing architecture, bLUQueueDepth will not be 0, then we will
+		 * use the smaller between UFSHCI CAP.NUTRS and UFS LU bLUQueueDepth
+		 */
+		lun_qdepth = min_t(int, desc_buf[UNIT_DESC_PARAM_LU_Q_DEPTH], hba->nutrs);
+	}
+	/*
+	 * According to UFS device specification, the write protection mode is only supported by
+	 * normal LU, not supported by WLUN.
+	 */
+	if (hba->dev_info.f_power_on_wp_en && lun < hba->dev_info.max_lu_supported &&
+	    !hba->dev_info.is_lu_power_on_wp &&
+	    desc_buf[UNIT_DESC_PARAM_LU_WR_PROTECT] == UFS_LU_POWER_ON_WP)
+		hba->dev_info.is_lu_power_on_wp = true;
+
+	kfree(desc_buf);
+set_qdepth:
+	/*
+	 * For WLUNs that don't support unit descriptor, queue depth is set to 1. For LUs whose
+	 * bLUQueueDepth == 0, the queue depth is set to a maximum value that host can queue.
+	 */
+	dev_dbg(hba->dev, "Set LU %x queue depth %d\n", lun, lun_qdepth);
+	scsi_change_queue_depth(sdev, lun_qdepth);
+}
+
+/**
  * ufshcd_slave_alloc - handle initial SCSI device configurations
  * @sdev: pointer to SCSI device
  *
@@ -5017,9 +4981,7 @@ static int ufshcd_slave_alloc(struct scsi_device *sdev)
 	/* WRITE_SAME command is not supported */
 	sdev->no_write_same = 1;
 
-	ufshcd_set_queue_depth(sdev);
-
-	ufshcd_get_lu_power_on_wp_status(hba, sdev);
+	ufshcd_lu_init(hba, sdev);
 
 	ufshcd_setup_links(hba, sdev);
 
@@ -5382,6 +5344,26 @@ static void __ufshcd_transfer_req_compl(struct ufs_hba *hba,
 	}
 }
 
+/* Any value that is not an existing queue number is fine for this constant. */
+enum {
+	UFSHCD_POLL_FROM_INTERRUPT_CONTEXT = -1
+};
+
+static void ufshcd_clear_polled(struct ufs_hba *hba,
+				unsigned long *completed_reqs)
+{
+	int tag;
+
+	for_each_set_bit(tag, completed_reqs, hba->nutrs) {
+		struct scsi_cmnd *cmd = hba->lrb[tag].cmd;
+
+		if (!cmd)
+			continue;
+		if (scsi_cmd_to_rq(cmd)->cmd_flags & REQ_POLLED)
+			__clear_bit(tag, completed_reqs);
+	}
+}
+
 /*
  * Returns > 0 if one or more commands have been completed or 0 if no
  * requests have been completed.
@@ -5398,13 +5380,17 @@ static int ufshcd_poll(struct Scsi_Host *shost, unsigned int queue_num)
 	WARN_ONCE(completed_reqs & ~hba->outstanding_reqs,
 		  "completed: %#lx; outstanding: %#lx\n", completed_reqs,
 		  hba->outstanding_reqs);
+	if (queue_num == UFSHCD_POLL_FROM_INTERRUPT_CONTEXT) {
+		/* Do not complete polled requests from interrupt context. */
+		ufshcd_clear_polled(hba, &completed_reqs);
+	}
 	hba->outstanding_reqs &= ~completed_reqs;
 	spin_unlock_irqrestore(&hba->outstanding_lock, flags);
 
 	if (completed_reqs)
 		__ufshcd_transfer_req_compl(hba, completed_reqs);
 
-	return completed_reqs;
+	return completed_reqs != 0;
 }
 
 /**
@@ -5435,7 +5421,7 @@ static irqreturn_t ufshcd_transfer_req_compl(struct ufs_hba *hba)
 	 * Ignore the ufshcd_poll() return value and return IRQ_HANDLED since we
 	 * do not want polling to trigger spurious interrupt complaints.
 	 */
-	ufshcd_poll(hba->host, 0);
+	ufshcd_poll(hba->host, UFSHCD_POLL_FROM_INTERRUPT_CONTEXT);
 
 	return IRQ_HANDLED;
 }
@@ -6199,6 +6185,38 @@ static bool ufshcd_is_pwr_mode_restore_needed(struct ufs_hba *hba)
 	return false;
 }
 
+static bool ufshcd_abort_all(struct ufs_hba *hba)
+{
+	bool needs_reset = false;
+	int tag, ret;
+
+	/* Clear pending transfer requests */
+	for_each_set_bit(tag, &hba->outstanding_reqs, hba->nutrs) {
+		ret = ufshcd_try_to_abort_task(hba, tag);
+		dev_err(hba->dev, "Aborting tag %d / CDB %#02x %s\n", tag,
+			hba->lrb[tag].cmd ? hba->lrb[tag].cmd->cmnd[0] : -1,
+			ret ? "failed" : "succeeded");
+		if (ret) {
+			needs_reset = true;
+			goto out;
+		}
+	}
+
+	/* Clear pending task management requests */
+	for_each_set_bit(tag, &hba->outstanding_tasks, hba->nutmrs) {
+		if (ufshcd_clear_tm_cmd(hba, tag)) {
+			needs_reset = true;
+			goto out;
+		}
+	}
+
+out:
+	/* Complete the requests that are cleared by s/w */
+	ufshcd_complete_requests(hba);
+
+	return needs_reset;
+}
+
 /**
  * ufshcd_err_handler - handle UFS errors that require s/w attention
  * @work: pointer to work structure
@@ -6210,10 +6228,7 @@ static void ufshcd_err_handler(struct work_struct *work)
 	unsigned long flags;
 	bool needs_restore;
 	bool needs_reset;
-	bool err_xfer;
-	bool err_tm;
 	int pmc_err;
-	int tag;
 
 	hba = container_of(work, struct ufs_hba, eh_work);
 
@@ -6242,8 +6257,6 @@ static void ufshcd_err_handler(struct work_struct *work)
 again:
 	needs_restore = false;
 	needs_reset = false;
-	err_xfer = false;
-	err_tm = false;
 
 	if (hba->ufshcd_state != UFSHCD_STATE_ERROR)
 		hba->ufshcd_state = UFSHCD_STATE_RESET;
@@ -6312,34 +6325,13 @@ again:
 	hba->silence_err_logs = true;
 	/* release lock as clear command might sleep */
 	spin_unlock_irqrestore(hba->host->host_lock, flags);
-	/* Clear pending transfer requests */
-	for_each_set_bit(tag, &hba->outstanding_reqs, hba->nutrs) {
-		if (ufshcd_try_to_abort_task(hba, tag)) {
-			err_xfer = true;
-			goto lock_skip_pending_xfer_clear;
-		}
-		dev_err(hba->dev, "Aborted tag %d / CDB %#02x\n", tag,
-			hba->lrb[tag].cmd ? hba->lrb[tag].cmd->cmnd[0] : -1);
-	}
-
-	/* Clear pending task management requests */
-	for_each_set_bit(tag, &hba->outstanding_tasks, hba->nutmrs) {
-		if (ufshcd_clear_tm_cmd(hba, tag)) {
-			err_tm = true;
-			goto lock_skip_pending_xfer_clear;
-		}
-	}
 
-lock_skip_pending_xfer_clear:
-	/* Complete the requests that are cleared by s/w */
-	ufshcd_complete_requests(hba);
+	needs_reset = ufshcd_abort_all(hba);
 
 	spin_lock_irqsave(hba->host->host_lock, flags);
 	hba->silence_err_logs = false;
-	if (err_xfer || err_tm) {
-		needs_reset = true;
+	if (needs_reset)
 		goto do_reset;
-	}
 
 	/*
 	 * After all reqs and tasks are cleared from doorbell,
@@ -8293,6 +8285,28 @@ out:
 	}
 }
 
+static enum scsi_timeout_action ufshcd_eh_timed_out(struct scsi_cmnd *scmd)
+{
+	struct ufs_hba *hba = shost_priv(scmd->device->host);
+
+	if (!hba->system_suspending) {
+		/* Activate the error handler in the SCSI core. */
+		return SCSI_EH_NOT_HANDLED;
+	}
+
+	/*
+	 * If we get here we know that no TMFs are outstanding and also that
+	 * the only pending command is a START STOP UNIT command. Handle the
+	 * timeout of that command directly to prevent a deadlock between
+	 * ufshcd_set_dev_pwr_mode() and ufshcd_err_handler().
+	 */
+	ufshcd_link_recovery(hba);
+	dev_info(hba->dev, "%s() finished; outstanding_tasks = %#lx.\n",
+		 __func__, hba->outstanding_tasks);
+
+	return hba->outstanding_reqs ? SCSI_EH_RESET_TIMER : SCSI_EH_DONE;
+}
+
 static const struct attribute_group *ufshcd_driver_groups[] = {
 	&ufs_sysfs_unit_descriptor_group,
 	&ufs_sysfs_lun_attributes_group,
@@ -8327,6 +8341,7 @@ static struct scsi_host_template ufshcd_driver_template = {
 	.eh_abort_handler	= ufshcd_abort,
 	.eh_device_reset_handler = ufshcd_eh_device_reset_handler,
 	.eh_host_reset_handler   = ufshcd_eh_host_reset_handler,
+	.eh_timed_out		= ufshcd_eh_timed_out,
 	.this_id		= -1,
 	.sg_tablesize		= SG_ALL,
 	.cmd_per_lun		= UFSHCD_CMD_PER_LUN,
@@ -8730,6 +8745,40 @@ static void ufshcd_hba_exit(struct ufs_hba *hba)
 	}
 }
 
+static int ufshcd_execute_start_stop(struct scsi_device *sdev,
+				     enum ufs_dev_pwr_mode pwr_mode,
+				     struct scsi_sense_hdr *sshdr)
+{
+	unsigned char cdb[6] = { START_STOP, 0, 0, 0, pwr_mode << 4, 0 };
+	struct request *req;
+	struct scsi_cmnd *scmd;
+	int ret;
+
+	req = scsi_alloc_request(sdev->request_queue, REQ_OP_DRV_IN,
+				 BLK_MQ_REQ_PM);
+	if (IS_ERR(req))
+		return PTR_ERR(req);
+
+	scmd = blk_mq_rq_to_pdu(req);
+	scmd->cmd_len = COMMAND_SIZE(cdb[0]);
+	memcpy(scmd->cmnd, cdb, scmd->cmd_len);
+	scmd->allowed = 0/*retries*/;
+	scmd->flags |= SCMD_FAIL_IF_RECOVERING;
+	req->timeout = 1 * HZ;
+	req->rq_flags |= RQF_PM | RQF_QUIET;
+
+	blk_execute_rq(req, /*at_head=*/true);
+
+	if (sshdr)
+		scsi_normalize_sense(scmd->sense_buffer, scmd->sense_len,
+				     sshdr);
+	ret = scmd->result;
+
+	blk_mq_free_request(req);
+
+	return ret;
+}
+
 /**
  * ufshcd_set_dev_pwr_mode - sends START STOP UNIT command to set device
  *			     power mode
@@ -8742,25 +8791,17 @@ static void ufshcd_hba_exit(struct ufs_hba *hba)
 static int ufshcd_set_dev_pwr_mode(struct ufs_hba *hba,
 				     enum ufs_dev_pwr_mode pwr_mode)
 {
-	unsigned char cmd[6] = { START_STOP };
 	struct scsi_sense_hdr sshdr;
 	struct scsi_device *sdp;
 	unsigned long flags;
 	int ret, retries;
-	unsigned long deadline;
-	int32_t remaining;
 
 	spin_lock_irqsave(hba->host->host_lock, flags);
 	sdp = hba->ufs_device_wlun;
-	if (sdp) {
+	if (sdp && scsi_device_online(sdp))
 		ret = scsi_device_get(sdp);
-		if (!ret && !scsi_device_online(sdp)) {
-			ret = -ENODEV;
-			scsi_device_put(sdp);
-		}
-	} else {
+	else
 		ret = -ENODEV;
-	}
 	spin_unlock_irqrestore(hba->host->host_lock, flags);
 
 	if (ret)
@@ -8774,24 +8815,18 @@ static int ufshcd_set_dev_pwr_mode(struct ufs_hba *hba,
 	 */
 	hba->host->eh_noresume = 1;
 
-	cmd[4] = pwr_mode << 4;
-
 	/*
 	 * Current function would be generally called from the power management
 	 * callbacks hence set the RQF_PM flag so that it doesn't resume the
 	 * already suspended childs.
 	 */
-	deadline = jiffies + 10 * HZ;
 	for (retries = 3; retries > 0; --retries) {
-		ret = -ETIMEDOUT;
-		remaining = deadline - jiffies;
-		if (remaining <= 0)
-			break;
-		ret = scsi_execute(sdp, cmd, DMA_NONE, NULL, 0, NULL, &sshdr,
-				   remaining / HZ, 0, 0, RQF_PM, NULL);
-		if (!scsi_status_is_check_condition(ret) ||
-				!scsi_sense_valid(&sshdr) ||
-				sshdr.sense_key != UNIT_ATTENTION)
+		ret = ufshcd_execute_start_stop(sdp, pwr_mode, &sshdr);
+		/*
+		 * scsi_execute() only returns a negative value if the request
+		 * queue is dying.
+		 */
+		if (ret <= 0)
 			break;
 	}
 	if (ret) {
@@ -8803,10 +8838,9 @@ static int ufshcd_set_dev_pwr_mode(struct ufs_hba *hba,
 				scsi_print_sense_hdr(sdp, NULL, &sshdr);
 			ret = -EIO;
 		}
-	}
-
-	if (!ret)
+	} else {
 		hba->curr_dev_pwr_mode = pwr_mode;
+	}
 
 	scsi_device_put(sdp);
 	hba->host->eh_noresume = 0;
@@ -8815,7 +8849,7 @@ static int ufshcd_set_dev_pwr_mode(struct ufs_hba *hba,
 
 static int ufshcd_link_state_transition(struct ufs_hba *hba,
 					enum uic_link_state req_link_state,
-					int check_for_bkops)
+					bool check_for_bkops)
 {
 	int ret = 0;
 
@@ -8966,7 +9000,7 @@ static void ufshcd_hba_vreg_set_hpm(struct ufs_hba *hba)
 static int __ufshcd_wl_suspend(struct ufs_hba *hba, enum ufs_pm_op pm_op)
 {
 	int ret = 0;
-	int check_for_bkops;
+	bool check_for_bkops;
 	enum ufs_pm_level pm_lvl;
 	enum ufs_dev_pwr_mode req_dev_pwr_mode;
 	enum uic_link_state req_link_state;
@@ -9259,6 +9293,7 @@ static int ufshcd_wl_suspend(struct device *dev)
 
 	hba = shost_priv(sdev->host);
 	down(&hba->host_sem);
+	hba->system_suspending = true;
 
 	if (pm_runtime_suspended(dev))
 		goto out;
@@ -9300,6 +9335,7 @@ out:
 		hba->curr_dev_pwr_mode, hba->uic_link_state);
 	if (!ret)
 		hba->is_sys_suspended = false;
+	hba->system_suspending = false;
 	up(&hba->host_sem);
 	return ret;
 }
diff --git a/drivers/ufs/core/ufshpb.c b/drivers/ufs/core/ufshpb.c
index b7f412d0f301..994f4ac9df5a 100644
--- a/drivers/ufs/core/ufshpb.c
+++ b/drivers/ufs/core/ufshpb.c
@@ -233,11 +233,6 @@ next_srgn:
 	rgn = hpb->rgn_tbl + rgn_idx;
 	srgn = rgn->srgn_tbl + srgn_idx;
 
-	if (likely(!srgn->is_last))
-		bitmap_len = hpb->entries_per_srgn;
-	else
-		bitmap_len = hpb->last_srgn_entries;
-
 	if (!ufshpb_is_valid_srgn(rgn, srgn))
 		return true;
 
@@ -253,6 +248,11 @@ next_srgn:
 		return true;
 	}
 
+	if (likely(!srgn->is_last))
+		bitmap_len = hpb->entries_per_srgn;
+	else
+		bitmap_len = hpb->last_srgn_entries;
+
 	if ((srgn_offset + cnt) > bitmap_len)
 		bit_len = bitmap_len - srgn_offset;
 	else
@@ -2289,7 +2289,7 @@ static bool ufshpb_check_hpb_reset_query(struct ufs_hba *hba)
 	/* wait for the device to complete HPB reset query */
 	for (try = 0; try < HPB_RESET_REQ_RETRIES; try++) {
 		dev_dbg(hba->dev,
-			"%s start flag reset polling %d times\n",
+			"%s: start flag reset polling %d times\n",
 			__func__, try);
 
 		/* Poll fHpbReset flag to be cleared */
@@ -2298,7 +2298,7 @@ static bool ufshpb_check_hpb_reset_query(struct ufs_hba *hba)
 
 		if (err) {
 			dev_err(hba->dev,
-				"%s reading fHpbReset flag failed with error %d\n",
+				"%s: reading fHpbReset flag failed with error %d\n",
 				__func__, err);
 			return flag_res;
 		}
@@ -2310,7 +2310,7 @@ static bool ufshpb_check_hpb_reset_query(struct ufs_hba *hba)
 	}
 	if (flag_res) {
 		dev_err(hba->dev,
-			"%s fHpbReset was not cleared by the device\n",
+			"%s: fHpbReset was not cleared by the device\n",
 			__func__);
 	}
 out:
diff --git a/drivers/ufs/host/ufs-mediatek.c b/drivers/ufs/host/ufs-mediatek.c
index 7309f3f87eac..21d9b047539f 100644
--- a/drivers/ufs/host/ufs-mediatek.c
+++ b/drivers/ufs/host/ufs-mediatek.c
@@ -109,7 +109,7 @@ static bool ufs_mtk_is_pmc_via_fastauto(struct ufs_hba *hba)
 {
 	struct ufs_mtk_host *host = ufshcd_get_variant(hba);
 
-	return (host->caps & UFS_MTK_CAP_PMC_VIA_FASTAUTO);
+	return !!(host->caps & UFS_MTK_CAP_PMC_VIA_FASTAUTO);
 }
 
 static void ufs_mtk_cfg_unipro_cg(struct ufs_hba *hba, bool enable)
@@ -441,8 +441,6 @@ static int ufs_mtk_mphy_power_on(struct ufs_hba *hba, bool on)
 		if (ufs_mtk_is_va09_supported(hba)) {
 			ufs_mtk_va09_pwr_ctrl(res, 0);
 			ret = regulator_disable(host->reg_va09);
-			if (ret < 0)
-				goto out;
 		}
 	}
 out:
@@ -1097,7 +1095,7 @@ static void ufs_mtk_setup_clk_gating(struct ufs_hba *hba)
 	}
 }
 
-static int ufs_mtk_post_link(struct ufs_hba *hba)
+static void ufs_mtk_post_link(struct ufs_hba *hba)
 {
 	/* enable unipro clock gating feature */
 	ufs_mtk_cfg_unipro_cg(hba, true);
@@ -1108,8 +1106,6 @@ static int ufs_mtk_post_link(struct ufs_hba *hba)
 			FIELD_PREP(UFSHCI_AHIBERN8_SCALE_MASK, 3);
 
 	ufs_mtk_setup_clk_gating(hba);
-
-	return 0;
 }
 
 static int ufs_mtk_link_startup_notify(struct ufs_hba *hba,
@@ -1122,7 +1118,7 @@ static int ufs_mtk_link_startup_notify(struct ufs_hba *hba,
 		ret = ufs_mtk_pre_link(hba);
 		break;
 	case POST_CHANGE:
-		ret = ufs_mtk_post_link(hba);
+		ufs_mtk_post_link(hba);
 		break;
 	default:
 		ret = -EINVAL;
@@ -1274,9 +1270,8 @@ static int ufs_mtk_suspend(struct ufs_hba *hba, enum ufs_pm_op pm_op,
 	struct arm_smccc_res res;
 
 	if (status == PRE_CHANGE) {
-		if (!ufshcd_is_auto_hibern8_supported(hba))
-			return 0;
-		ufs_mtk_auto_hibern8_disable(hba);
+		if (ufshcd_is_auto_hibern8_supported(hba))
+			ufs_mtk_auto_hibern8_disable(hba);
 		return 0;
 	}
author	Linus Torvalds <torvalds@linux-foundation.org>	2022-12-14 19:58:51 +0300
committer	Linus Torvalds <torvalds@linux-foundation.org>	2022-12-14 19:58:51 +0300
commit	aa5ad10f6cca6d42f3fef6cb862e03b220ea19a6 (patch)
tree	80da5833dccec9d952c8458c98c65864fca1186a /drivers
parent	e2ca6ba6ba0152361aa4fcbf6067db71b2c7a770 (diff)
parent	4e80eef45ad775a54fb06a66bf8267a154781ce5 (diff)
download	linux-aa5ad10f6cca6d42f3fef6cb862e03b220ea19a6.tar.xz