Merge master.kernel.org:/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6

* master.kernel.org:/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6: (97 commits)
  [SCSI] zfcp: removed wrong comment
  [SCSI] zfcp: use of uninitialized variable
  [SCSI] zfcp: Invalid locking order
  [SCSI] aic79xx: use dma_get_required_mask()
  [SCSI] aic79xx: fix bracket mismatch in unused macro
  [SCSI] BusLogic: Replace 'boolean' by 'bool'
  [SCSI] advansys: clean up warnings
  [SCSI] 53c7xx: brackets fix in uncompiled code
  [SCSI] nsp_cs: remove old scsi code
  [SCSI] aic79xx: make ahd_match_scb() static
  [SCSI] DAC960: kmalloc->kzalloc/Casting cleanups
  [SCSI] scsi_kmap_atomic_sg(): check that local irqs are disabled
  [SCSI] Buslogic: local_irq_disable() is redundant after local_irq_save()
  [SCSI] aic94xx: update for v28 firmware
  [SCSI] scsi_error: Fix lost EH commands
  [SCSI] aic94xx: Add default bus reset handler
  [SCSI] aic94xx: Remove TMF result code munging
  [SCSI] libsas: Add an LU reset mechanism to the error handler
  [SCSI] libsas: Don't BUG when connecting two expanders via wide port
  [SCSI] st: fix Tape dies if wrong block size used, bug 7919
  ...

11 files changed, 164 insertions, 100 deletions

diff --git a/drivers/scsi/aic94xx/aic94xx_dev.c b/drivers/scsi/aic94xx/aic94xx_dev.c
index 6f8901b748f..c520e5b41fb 100644
--- a/drivers/scsi/aic94xx/aic94xx_dev.c
+++ b/drivers/scsi/aic94xx/aic94xx_dev.c
@@ -37,18 +37,14 @@
 
 static inline int asd_get_ddb(struct asd_ha_struct *asd_ha)
 {
-	unsigned long flags;
 	int ddb, i;
 
-	spin_lock_irqsave(&asd_ha->hw_prof.ddb_lock, flags);
 	ddb = FIND_FREE_DDB(asd_ha);
 	if (ddb >= asd_ha->hw_prof.max_ddbs) {
 		ddb = -ENOMEM;
-		spin_unlock_irqrestore(&asd_ha->hw_prof.ddb_lock, flags);
 		goto out;
 	}
 	SET_DDB(ddb, asd_ha);
-	spin_unlock_irqrestore(&asd_ha->hw_prof.ddb_lock, flags);
 
 	for (i = 0; i < sizeof(struct asd_ddb_ssp_smp_target_port); i+= 4)
 		asd_ddbsite_write_dword(asd_ha, ddb, i, 0);
@@ -77,14 +73,10 @@ out:
 
 static inline void asd_free_ddb(struct asd_ha_struct *asd_ha, int ddb)
 {
-	unsigned long flags;
-
 	if (!ddb || ddb >= 0xFFFF)
 		return;
 	asd_ddbsite_write_byte(asd_ha, ddb, DDB_TYPE, DDB_TYPE_UNUSED);
-	spin_lock_irqsave(&asd_ha->hw_prof.ddb_lock, flags);
 	CLEAR_DDB(ddb, asd_ha);
-	spin_unlock_irqrestore(&asd_ha->hw_prof.ddb_lock, flags);
 }
 
 static inline void asd_set_ddb_type(struct domain_device *dev)
@@ -320,8 +312,11 @@ out:
 
 int asd_dev_found(struct domain_device *dev)
 {
+	unsigned long flags;
 	int res = 0;
+	struct asd_ha_struct *asd_ha = dev->port->ha->lldd_ha;
 
+	spin_lock_irqsave(&asd_ha->hw_prof.ddb_lock, flags);
 	switch (dev->dev_type) {
 	case SATA_PM:
 		res = asd_init_sata_pm_ddb(dev);
@@ -335,14 +330,18 @@ int asd_dev_found(struct domain_device *dev)
 		else
 			res = asd_init_initiator_ddb(dev);
 	}
+	spin_unlock_irqrestore(&asd_ha->hw_prof.ddb_lock, flags);
+
 	return res;
 }
 
 void asd_dev_gone(struct domain_device *dev)
 {
 	int ddb, sister_ddb;
+	unsigned long flags;
 	struct asd_ha_struct *asd_ha = dev->port->ha->lldd_ha;
 
+	spin_lock_irqsave(&asd_ha->hw_prof.ddb_lock, flags);
 	ddb = (int) (unsigned long) dev->lldd_dev;
 	sister_ddb = asd_ddbsite_read_word(asd_ha, ddb, SISTER_DDB);
 
@@ -350,4 +349,5 @@ void asd_dev_gone(struct domain_device *dev)
 		asd_free_ddb(asd_ha, sister_ddb);
 	asd_free_ddb(asd_ha, ddb);
 	dev->lldd_dev = NULL;
+	spin_unlock_irqrestore(&asd_ha->hw_prof.ddb_lock, flags);
 }
diff --git a/drivers/scsi/aic94xx/aic94xx_dump.c b/drivers/scsi/aic94xx/aic94xx_dump.c
index e6ade5996d9..6bd8e3059d2 100644
--- a/drivers/scsi/aic94xx/aic94xx_dump.c
+++ b/drivers/scsi/aic94xx/aic94xx_dump.c
@@ -556,7 +556,7 @@ static void asd_dump_lseq_state(struct asd_ha_struct *asd_ha, int lseq)
 	PRINT_LMIP_word(asd_ha, lseq, Q_TGTXFR_TAIL);
 	PRINT_LMIP_byte(asd_ha, lseq, LINK_NUMBER);
 	PRINT_LMIP_byte(asd_ha, lseq, SCRATCH_FLAGS);
-	PRINT_LMIP_qword(asd_ha, lseq, CONNECTION_STATE);
+	PRINT_LMIP_dword(asd_ha, lseq, CONNECTION_STATE);
 	PRINT_LMIP_word(asd_ha, lseq, CONCTL);
 	PRINT_LMIP_byte(asd_ha, lseq, CONSTAT);
 	PRINT_LMIP_byte(asd_ha, lseq, CONNECTION_MODES);
diff --git a/drivers/scsi/aic94xx/aic94xx_init.c b/drivers/scsi/aic94xx/aic94xx_init.c
index fbc82b00a41..bc7744e35ad 100644
--- a/drivers/scsi/aic94xx/aic94xx_init.c
+++ b/drivers/scsi/aic94xx/aic94xx_init.c
@@ -38,7 +38,7 @@
 #include "aic94xx_seq.h"
 
 /* The format is "version.release.patchlevel" */
-#define ASD_DRIVER_VERSION "1.0.2"
+#define ASD_DRIVER_VERSION "1.0.3"
 
 static int use_msi = 0;
 module_param_named(use_msi, use_msi, int, S_IRUGO);
@@ -57,6 +57,8 @@ MODULE_PARM_DESC(collector, "\n"
 char sas_addr_str[2*SAS_ADDR_SIZE + 1] = "";
 
 static struct scsi_transport_template *aic94xx_transport_template;
+static int asd_scan_finished(struct Scsi_Host *, unsigned long);
+static void asd_scan_start(struct Scsi_Host *);
 
 static struct scsi_host_template aic94xx_sht = {
 	.module			= THIS_MODULE,
@@ -66,6 +68,8 @@ static struct scsi_host_template aic94xx_sht = {
 	.target_alloc		= sas_target_alloc,
 	.slave_configure	= sas_slave_configure,
 	.slave_destroy		= sas_slave_destroy,
+	.scan_finished		= asd_scan_finished,
+	.scan_start		= asd_scan_start,
 	.change_queue_depth	= sas_change_queue_depth,
 	.change_queue_type	= sas_change_queue_type,
 	.bios_param		= sas_bios_param,
@@ -75,6 +79,8 @@ static struct scsi_host_template aic94xx_sht = {
 	.sg_tablesize		= SG_ALL,
 	.max_sectors		= SCSI_DEFAULT_MAX_SECTORS,
 	.use_clustering		= ENABLE_CLUSTERING,
+	.eh_device_reset_handler	= sas_eh_device_reset_handler,
+	.eh_bus_reset_handler	= sas_eh_bus_reset_handler,
 };
 
 static int __devinit asd_map_memio(struct asd_ha_struct *asd_ha)
@@ -234,7 +240,7 @@ static int __devinit asd_common_setup(struct asd_ha_struct *asd_ha)
 	}
 	/* Provide some sane default values. */
 	asd_ha->hw_prof.max_scbs = 512;
-	asd_ha->hw_prof.max_ddbs = 128;
+	asd_ha->hw_prof.max_ddbs = ASD_MAX_DDBS;
 	asd_ha->hw_prof.num_phys = ASD_MAX_PHYS;
 	/* All phys are enabled, by default. */
 	asd_ha->hw_prof.enabled_phys = 0xFF;
@@ -526,6 +532,7 @@ static int asd_register_sas_ha(struct asd_ha_struct *asd_ha)
 	asd_ha->sas_ha.num_phys= ASD_MAX_PHYS;
 
 	asd_ha->sas_ha.lldd_queue_size = asd_ha->seq.can_queue;
+	asd_ha->sas_ha.lldd_max_execute_num = lldd_max_execute_num;
 
 	return sas_register_ha(&asd_ha->sas_ha);
 }
@@ -671,21 +678,10 @@ static int __devinit asd_pci_probe(struct pci_dev *dev,
 	if (err)
 		goto Err_reg_sas;
 
-	err = asd_enable_phys(asd_ha, asd_ha->hw_prof.enabled_phys);
-	if (err) {
-		asd_printk("coudln't enable phys, err:%d\n", err);
-		goto Err_en_phys;
-	}
-	ASD_DPRINTK("enabled phys\n");
-	/* give the phy enabling interrupt event time to come in (1s
-	 * is empirically about all it takes) */
-	ssleep(1);
-	/* Wait for discovery to finish */
-	scsi_flush_work(asd_ha->sas_ha.core.shost);
+	scsi_scan_host(shost);
 
 	return 0;
-Err_en_phys:
-	asd_unregister_sas_ha(asd_ha);
+
 Err_reg_sas:
 	asd_remove_dev_attrs(asd_ha);
 Err_dev_attrs:
@@ -778,6 +774,28 @@ static void __devexit asd_pci_remove(struct pci_dev *dev)
 	return;
 }
 
+static void asd_scan_start(struct Scsi_Host *shost)
+{
+	struct asd_ha_struct *asd_ha;
+	int err;
+
+	asd_ha = SHOST_TO_SAS_HA(shost)->lldd_ha;
+	err = asd_enable_phys(asd_ha, asd_ha->hw_prof.enabled_phys);
+	if (err)
+		asd_printk("Couldn't enable phys, err:%d\n", err);
+}
+
+static int asd_scan_finished(struct Scsi_Host *shost, unsigned long time)
+{
+	/* give the phy enabling interrupt event time to come in (1s
+	 * is empirically about all it takes) */
+	if (time < HZ)
+		return 0;
+	/* Wait for discovery to finish */
+	scsi_flush_work(shost);
+	return 1;
+}
+
 static ssize_t asd_version_show(struct device_driver *driver, char *buf)
 {
 	return snprintf(buf, PAGE_SIZE, "%s\n", ASD_DRIVER_VERSION);
@@ -885,6 +903,7 @@ static void __exit aic94xx_exit(void)
 	asd_remove_driver_attrs(&aic94xx_pci_driver.driver);
 	pci_unregister_driver(&aic94xx_pci_driver);
 	sas_release_transport(aic94xx_transport_template);
+	asd_release_firmware();
 	asd_destroy_global_caches();
 	asd_printk("%s version %s unloaded\n", ASD_DRIVER_DESCRIPTION,
 		   ASD_DRIVER_VERSION);
diff --git a/drivers/scsi/aic94xx/aic94xx_reg_def.h b/drivers/scsi/aic94xx/aic94xx_reg_def.h
index a11f4e6d8bd..a43e8cdf4ee 100644
--- a/drivers/scsi/aic94xx/aic94xx_reg_def.h
+++ b/drivers/scsi/aic94xx/aic94xx_reg_def.h
@@ -2226,9 +2226,10 @@
 #define LmSEQ_SAS_RESET_MODE(LinkNum)		(LmSCRATCH(LinkNum) + 0x0074)
 #define LmSEQ_LINK_RESET_RETRY_COUNT(LinkNum)	(LmSCRATCH(LinkNum) + 0x0075)
 #define LmSEQ_NUM_LINK_RESET_RETRIES(LinkNum)	(LmSCRATCH(LinkNum) + 0x0076)
-#define LmSEQ_OOB_INT_ENABLES(LinkNum)		(LmSCRATCH(LinkNum) + 0x007A)
+#define LmSEQ_OOB_INT_ENABLES(LinkNum)		(LmSCRATCH(LinkNum) + 0x0078)
+#define LmSEQ_NOTIFY_TIMER_DOWN_COUNT(LinkNum)	(LmSCRATCH(LinkNum) + 0x007A)
 #define LmSEQ_NOTIFY_TIMER_TIMEOUT(LinkNum)	(LmSCRATCH(LinkNum) + 0x007C)
-#define LmSEQ_NOTIFY_TIMER_DOWN_COUNT(LinkNum)	(LmSCRATCH(LinkNum) + 0x007E)
+#define LmSEQ_NOTIFY_TIMER_INITIAL_COUNT(LinkNum) (LmSCRATCH(LinkNum) + 0x007E)
 
 /* Mode dependent scratch page 1, mode 0 and mode 1 */
 #define LmSEQ_SG_LIST_PTR_ADDR0(LinkNum)        (LmSCRATCH(LinkNum) + 0x0020)
diff --git a/drivers/scsi/aic94xx/aic94xx_sas.h b/drivers/scsi/aic94xx/aic94xx_sas.h
index 9050e93bfd5..fa7c5290257 100644
--- a/drivers/scsi/aic94xx/aic94xx_sas.h
+++ b/drivers/scsi/aic94xx/aic94xx_sas.h
@@ -34,6 +34,7 @@
  * domain that this sequencer can maintain low-level connections for
  * us.  They are be 64 bytes.
  */
+#define ASD_MAX_DDBS	128
 
 struct asd_ddb_ssp_smp_target_port {
 	u8     conn_type;	  /* byte 0 */
diff --git a/drivers/scsi/aic94xx/aic94xx_scb.c b/drivers/scsi/aic94xx/aic94xx_scb.c
index 75ed6b0569d..8f43ff772f2 100644
--- a/drivers/scsi/aic94xx/aic94xx_scb.c
+++ b/drivers/scsi/aic94xx/aic94xx_scb.c
@@ -413,40 +413,6 @@ void asd_invalidate_edb(struct asd_ascb *ascb, int edb_id)
 	}
 }
 
-/* hard reset a phy later */
-static void do_phy_reset_later(struct work_struct *work)
-{
-	struct sas_phy *sas_phy =
-		container_of(work, struct sas_phy, reset_work);
-	int error;
-
-	ASD_DPRINTK("%s: About to hard reset phy %d\n", __FUNCTION__,
-		    sas_phy->identify.phy_identifier);
-	/* Reset device port */
-	error = sas_phy_reset(sas_phy, 1);
-	if (error)
-		ASD_DPRINTK("%s: Hard reset of phy %d failed (%d).\n",
-			    __FUNCTION__, sas_phy->identify.phy_identifier, error);
-}
-
-static void phy_reset_later(struct sas_phy *sas_phy, struct Scsi_Host *shost)
-{
-	INIT_WORK(&sas_phy->reset_work, do_phy_reset_later);
-	queue_work(shost->work_q, &sas_phy->reset_work);
-}
-
-/* start up the ABORT TASK tmf... */
-static void task_kill_later(struct asd_ascb *ascb)
-{
-	struct asd_ha_struct *asd_ha = ascb->ha;
-	struct sas_ha_struct *sas_ha = &asd_ha->sas_ha;
-	struct Scsi_Host *shost = sas_ha->core.shost;
-	struct sas_task *task = ascb->uldd_task;
-
-	INIT_WORK(&task->abort_work, sas_task_abort);
-	queue_work(shost->work_q, &task->abort_work);
-}
-
 static void escb_tasklet_complete(struct asd_ascb *ascb,
 				  struct done_list_struct *dl)
 {
@@ -479,26 +445,55 @@ static void escb_tasklet_complete(struct asd_ascb *ascb,
 	case REQ_TASK_ABORT: {
 		struct asd_ascb *a, *b;
 		u16 tc_abort;
+		struct domain_device *failed_dev = NULL;
+
+		ASD_DPRINTK("%s: REQ_TASK_ABORT, reason=0x%X\n",
+			    __FUNCTION__, dl->status_block[3]);
 
+		/*
+		 * Find the task that caused the abort and abort it first.
+		 * The sequencer won't put anything on the done list until
+		 * that happens.
+		 */
 		tc_abort = *((u16*)(&dl->status_block[1]));
 		tc_abort = le16_to_cpu(tc_abort);
 
-		ASD_DPRINTK("%s: REQ_TASK_ABORT, reason=0x%X\n",
-			    __FUNCTION__, dl->status_block[3]);
+		list_for_each_entry_safe(a, b, &asd_ha->seq.pend_q, list) {
+			struct sas_task *task = ascb->uldd_task;
 
-		/* Find the pending task and abort it. */
-		list_for_each_entry_safe(a, b, &asd_ha->seq.pend_q, list)
-			if (a->tc_index == tc_abort) {
-				task_kill_later(a);
+			if (task && a->tc_index == tc_abort) {
+				failed_dev = task->dev;
+				sas_task_abort(task);
 				break;
 			}
+		}
+
+		if (!failed_dev) {
+			ASD_DPRINTK("%s: Can't find task (tc=%d) to abort!\n",
+				    __FUNCTION__, tc_abort);
+			goto out;
+		}
+
+		/*
+		 * Now abort everything else for that device (hba?) so
+		 * that the EH will wake up and do something.
+		 */
+		list_for_each_entry_safe(a, b, &asd_ha->seq.pend_q, list) {
+			struct sas_task *task = ascb->uldd_task;
+
+			if (task &&
+			    task->dev == failed_dev &&
+			    a->tc_index != tc_abort)
+				sas_task_abort(task);
+		}
+
 		goto out;
 	}
 	case REQ_DEVICE_RESET: {
-		struct Scsi_Host *shost = sas_ha->core.shost;
-		struct sas_phy *dev_phy;
 		struct asd_ascb *a;
 		u16 conn_handle;
+		unsigned long flags;
+		struct sas_task *last_dev_task = NULL;
 
 		conn_handle = *((u16*)(&dl->status_block[1]));
 		conn_handle = le16_to_cpu(conn_handle);
@@ -506,32 +501,47 @@ static void escb_tasklet_complete(struct asd_ascb *ascb,
 		ASD_DPRINTK("%s: REQ_DEVICE_RESET, reason=0x%X\n", __FUNCTION__,
 			    dl->status_block[3]);
 
-		/* Kill all pending tasks and reset the device */
-		dev_phy = NULL;
+		/* Find the last pending task for the device... */
 		list_for_each_entry(a, &asd_ha->seq.pend_q, list) {
-			struct sas_task *task;
-			struct domain_device *dev;
 			u16 x;
+			struct domain_device *dev;
+			struct sas_task *task = a->uldd_task;
 
-			task = a->uldd_task;
 			if (!task)
 				continue;
 			dev = task->dev;
 
 			x = (unsigned long)dev->lldd_dev;
-			if (x == conn_handle) {
-				dev_phy = dev->port->phy;
-				task_kill_later(a);
-			}
+			if (x == conn_handle)
+				last_dev_task = task;
 		}
 
-		/* Reset device port */
-		if (!dev_phy) {
-			ASD_DPRINTK("%s: No pending commands; can't reset.\n",
-				    __FUNCTION__);
+		if (!last_dev_task) {
+			ASD_DPRINTK("%s: Device reset for idle device %d?\n",
+				    __FUNCTION__, conn_handle);
 			goto out;
 		}
-		phy_reset_later(dev_phy, shost);
+
+		/* ...and set the reset flag */
+		spin_lock_irqsave(&last_dev_task->task_state_lock, flags);
+		last_dev_task->task_state_flags |= SAS_TASK_NEED_DEV_RESET;
+		spin_unlock_irqrestore(&last_dev_task->task_state_lock, flags);
+
+		/* Kill all pending tasks for the device */
+		list_for_each_entry(a, &asd_ha->seq.pend_q, list) {
+			u16 x;
+			struct domain_device *dev;
+			struct sas_task *task = a->uldd_task;
+
+			if (!task)
+				continue;
+			dev = task->dev;
+
+			x = (unsigned long)dev->lldd_dev;
+			if (x == conn_handle)
+				sas_task_abort(task);
+		}
+
 		goto out;
 	}
 	case SIGNAL_NCQ_ERROR:
diff --git a/drivers/scsi/aic94xx/aic94xx_sds.c b/drivers/scsi/aic94xx/aic94xx_sds.c
index e5a0ec37e95..5b0932f6147 100644
--- a/drivers/scsi/aic94xx/aic94xx_sds.c
+++ b/drivers/scsi/aic94xx/aic94xx_sds.c
@@ -427,7 +427,7 @@ struct asd_manuf_sec {
 
 struct asd_manuf_phy_desc {
 	u8    state;         /* low 4 bits */
-#define MS_PHY_STATE_ENABLEABLE 0
+#define MS_PHY_STATE_ENABLED    0
 #define MS_PHY_STATE_REPORTED   1
 #define MS_PHY_STATE_HIDDEN     2
 	u8    phy_id;
@@ -756,11 +756,11 @@ static void *asd_find_ll_by_id(void * const start, const u8 id0, const u8 id1)
  *
  * HIDDEN phys do not count in the total count.  REPORTED phys cannot
  * be enabled but are reported and counted towards the total.
- * ENEBLEABLE phys are enabled by default and count towards the total.
+ * ENABLED phys are enabled by default and count towards the total.
  * The absolute total phy number is ASD_MAX_PHYS.  hw_prof->num_phys
  * merely specifies the number of phys the host adapter decided to
  * report.  E.g., it is possible for phys 0, 1 and 2 to be HIDDEN,
- * phys 3, 4 and 5 to be REPORTED and phys 6 and 7 to be ENEBLEABLE.
+ * phys 3, 4 and 5 to be REPORTED and phys 6 and 7 to be ENABLED.
  * In this case ASD_MAX_PHYS is 8, hw_prof->num_phys is 5, and only 2
  * are actually enabled (enabled by default, max number of phys
  * enableable in this case).
@@ -816,8 +816,8 @@ static int asd_ms_get_phy_params(struct asd_ha_struct *asd_ha,
 			asd_ha->hw_prof.enabled_phys &= ~(1 << i);
 			rep_phys++;
 			continue;
-		case MS_PHY_STATE_ENABLEABLE:
-			ASD_DPRINTK("ms: phy%d: ENEBLEABLE\n", i);
+		case MS_PHY_STATE_ENABLED:
+			ASD_DPRINTK("ms: phy%d: ENABLED\n", i);
 			asd_ha->hw_prof.enabled_phys |= (1 << i);
 			en_phys++;
 			break;
diff --git a/drivers/scsi/aic94xx/aic94xx_seq.c b/drivers/scsi/aic94xx/aic94xx_seq.c
index 845112539d0..eae7a247bec 100644
--- a/drivers/scsi/aic94xx/aic94xx_seq.c
+++ b/drivers/scsi/aic94xx/aic94xx_seq.c
@@ -810,6 +810,8 @@ static void asd_init_lseq_mdp(struct asd_ha_struct *asd_ha,  int lseq)
 	/* No delay for the first NOTIFY to be sent to the attached target. */
 	asd_write_reg_word(asd_ha, LmSEQ_NOTIFY_TIMER_DOWN_COUNT(lseq),
 			   ASD_NOTIFY_DOWN_COUNT);
+	asd_write_reg_word(asd_ha, LmSEQ_NOTIFY_TIMER_INITIAL_COUNT(lseq),
+			   ASD_NOTIFY_DOWN_COUNT);
 
 	/* LSEQ Mode dependent, mode 0 and 1, page 1 setup. */
 	for (i = 0; i < 2; i++)	{
@@ -907,6 +909,16 @@ static void asd_init_scb_sites(struct asd_ha_struct *asd_ha)
 		for (i = 0; i < ASD_SCB_SIZE; i += 4)
 			asd_scbsite_write_dword(asd_ha, site_no, i, 0);
 
+		/* Initialize SCB Site Opcode field to invalid. */
+		asd_scbsite_write_byte(asd_ha, site_no,
+				       offsetof(struct scb_header, opcode),
+				       0xFF);
+
+		/* Initialize SCB Site Flags field to mean a response
+		 * frame has been received.  This means inadvertent
+		 * frames received to be dropped. */
+		asd_scbsite_write_byte(asd_ha, site_no, 0x49, 0x01);
+
 		/* Workaround needed by SEQ to fix a SATA issue is to exclude
 		 * certain SCB sites from the free list. */
 		if (!SCB_SITE_VALID(site_no))
@@ -922,16 +934,6 @@ static void asd_init_scb_sites(struct asd_ha_struct *asd_ha)
 		/* Q_NEXT field of the last SCB is invalidated. */
 		asd_scbsite_write_word(asd_ha, site_no, 0, first_scb_site_no);
 
-		/* Initialize SCB Site Opcode field to invalid. */
-		asd_scbsite_write_byte(asd_ha, site_no,
-				       offsetof(struct scb_header, opcode),
-				       0xFF);
-
-		/* Initialize SCB Site Flags field to mean a response
-		 * frame has been received.  This means inadvertent
-		 * frames received to be dropped. */
-		asd_scbsite_write_byte(asd_ha, site_no, 0x49, 0x01);
-
 		first_scb_site_no = site_no;
 		max_scbs++;
 	}
@@ -1173,6 +1175,16 @@ static void asd_init_ddb_0(struct asd_ha_struct *asd_ha)
 	set_bit(0, asd_ha->hw_prof.ddb_bitmap);
 }
 
+static void asd_seq_init_ddb_sites(struct asd_ha_struct *asd_ha)
+{
+	unsigned int i;
+	unsigned int ddb_site;
+
+	for (ddb_site = 0 ; ddb_site < ASD_MAX_DDBS; ddb_site++)
+		for (i = 0; i < sizeof(struct asd_ddb_ssp_smp_target_port); i+= 4)
+			asd_ddbsite_write_dword(asd_ha, ddb_site, i, 0);
+}
+
 /**
  * asd_seq_setup_seqs -- setup and initialize central and link sequencers
  * @asd_ha: pointer to host adapter structure
@@ -1182,6 +1194,9 @@ static void asd_seq_setup_seqs(struct asd_ha_struct *asd_ha)
 	int 		lseq;
 	u8		lseq_mask;
 
+	/* Initialize DDB sites */
+	asd_seq_init_ddb_sites(asd_ha);
+
 	/* Initialize SCB sites. Done first to compute some values which
 	 * the rest of the init code depends on. */
 	asd_init_scb_sites(asd_ha);
@@ -1232,6 +1247,13 @@ static int asd_seq_start_lseq(struct asd_ha_struct *asd_ha, int lseq)
 	return asd_seq_unpause_lseq(asd_ha, lseq);
 }
 
+int asd_release_firmware(void)
+{
+	if (sequencer_fw)
+		release_firmware(sequencer_fw);
+	return 0;
+}
+
 static int asd_request_firmware(struct asd_ha_struct *asd_ha)
 {
 	int err, i;
@@ -1375,7 +1397,9 @@ void asd_update_port_links(struct asd_ha_struct *asd_ha, struct asd_phy *phy)
 	u8  phy_is_up;
 	u8  mask;
 	int i, err;
+	unsigned long flags;
 
+	spin_lock_irqsave(&asd_ha->hw_prof.ddb_lock, flags);
 	for_each_phy(phy_mask, mask, i)
 		asd_ddbsite_write_byte(asd_ha, 0,
 				       offsetof(struct asd_ddb_seq_shared,
@@ -1395,6 +1419,7 @@ void asd_update_port_links(struct asd_ha_struct *asd_ha, struct asd_phy *phy)
 			break;
 		}
 	}
+	spin_unlock_irqrestore(&asd_ha->hw_prof.ddb_lock, flags);
 
 	if (err)
 		asd_printk("couldn't update DDB 0:error:%d\n", err);
diff --git a/drivers/scsi/aic94xx/aic94xx_seq.h b/drivers/scsi/aic94xx/aic94xx_seq.h
index 9e715e5496a..9437ff0ae3a 100644
--- a/drivers/scsi/aic94xx/aic94xx_seq.h
+++ b/drivers/scsi/aic94xx/aic94xx_seq.h
@@ -63,6 +63,7 @@ int asd_pause_lseq(struct asd_ha_struct *asd_ha, u8 lseq_mask);
 int asd_unpause_lseq(struct asd_ha_struct *asd_ha, u8 lseq_mask);
 int asd_init_seqs(struct asd_ha_struct *asd_ha);
 int asd_start_seqs(struct asd_ha_struct *asd_ha);
+int asd_release_firmware(void);
 
 void asd_update_port_links(struct asd_ha_struct *asd_ha, struct asd_phy *phy);
 #endif
diff --git a/drivers/scsi/aic94xx/aic94xx_task.c b/drivers/scsi/aic94xx/aic94xx_task.c
index d202ed5a670..e2ad5bed940 100644
--- a/drivers/scsi/aic94xx/aic94xx_task.c
+++ b/drivers/scsi/aic94xx/aic94xx_task.c
@@ -349,6 +349,7 @@ Again:
 
 	spin_lock_irqsave(&task->task_state_lock, flags);
 	task->task_state_flags &= ~SAS_TASK_STATE_PENDING;
+	task->task_state_flags &= ~SAS_TASK_AT_INITIATOR;
 	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);
@@ -557,6 +558,7 @@ int asd_execute_task(struct sas_task *task, const int num,
 	struct sas_task *t = task;
 	struct asd_ascb *ascb = NULL, *a;
 	struct asd_ha_struct *asd_ha = task->dev->port->ha->lldd_ha;
+	unsigned long flags;
 
 	res = asd_can_queue(asd_ha, num);
 	if (res)
@@ -599,6 +601,10 @@ int asd_execute_task(struct sas_task *task, const int num,
 		}
 		if (res)
 			goto out_err_unmap;
+
+		spin_lock_irqsave(&t->task_state_lock, flags);
+		t->task_state_flags |= SAS_TASK_AT_INITIATOR;
+		spin_unlock_irqrestore(&t->task_state_lock, flags);
 	}
 	list_del_init(&alist);
 
@@ -617,6 +623,9 @@ out_err_unmap:
 			if (a == b)
 				break;
 			t = a->uldd_task;
+			spin_lock_irqsave(&t->task_state_lock, flags);
+			t->task_state_flags &= ~SAS_TASK_AT_INITIATOR;
+			spin_unlock_irqrestore(&t->task_state_lock, flags);
 			switch (t->task_proto) {
 			case SATA_PROTO:
 			case SAS_PROTO_STP:
diff --git a/drivers/scsi/aic94xx/aic94xx_tmf.c b/drivers/scsi/aic94xx/aic94xx_tmf.c
index 61234384503..9a14a6d9727 100644
--- a/drivers/scsi/aic94xx/aic94xx_tmf.c
+++ b/drivers/scsi/aic94xx/aic94xx_tmf.c
@@ -566,9 +566,7 @@ static int asd_initiate_ssp_tmf(struct domain_device *dev, u8 *lun,
 		res = TMF_RESP_FUNC_ESUPP;
 		break;
 	default:
-		ASD_DPRINTK("%s: converting result 0x%x to TMF_RESP_FUNC_FAILED\n",
-			    __FUNCTION__, res);
-		res = TMF_RESP_FUNC_FAILED;
+		/* Allow TMF response codes to propagate upwards */
 		break;
 	}
 out_err: