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

Pull SCSI updates from James Bottomley:
 "This is mostly updates of the usual driver suspects: arcmsr,
  scsi_debug, mpt3sas, lpfc, cxlflash, qla2xxx, aacraid, megaraid_sas,
  hisi_sas.

  We also have a rework of the libsas hotplug handling to make it more
  robust, a slew of 32 bit time conversions and fixes, and a host of the
  usual minor updates and style changes. The biggest potential for
  regressions is the libsas hotplug changes, but so far they seem stable
  under testing"

* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (313 commits)
  scsi: qla2xxx: Fix logo flag for qlt_free_session_done()
  scsi: arcmsr: avoid do_gettimeofday
  scsi: core: Add VENDOR_SPECIFIC sense code definitions
  scsi: qedi: Drop cqe response during connection recovery
  scsi: fas216: fix sense buffer initialization
  scsi: ibmvfc: Remove unneeded semicolons
  scsi: hisi_sas: fix a bug in hisi_sas_dev_gone()
  scsi: hisi_sas: directly attached disk LED feature for v2 hw
  scsi: hisi_sas: devicetree: bindings: add LED feature for v2 hw
  scsi: megaraid_sas: NVMe passthrough command support
  scsi: megaraid: use ktime_get_real for firmware time
  scsi: fnic: use 64-bit timestamps
  scsi: qedf: Fix error return code in __qedf_probe()
  scsi: devinfo: fix format of the device list
  scsi: qla2xxx: Update driver version to 10.00.00.05-k
  scsi: qla2xxx: Add XCB counters to debugfs
  scsi: qla2xxx: Fix queue ID for async abort with Multiqueue
  scsi: qla2xxx: Fix warning for code intentation in __qla24xx_handle_gpdb_event()
  scsi: qla2xxx: Fix warning during port_name debug print
  scsi: qla2xxx: Fix warning in qla2x00_async_iocb_timeout()
  ...

1 files changed, 66 insertions, 20 deletions

diff --git a/drivers/scsi/libsas/sas_event.c b/drivers/scsi/libsas/sas_event.c
index 0bb9eefc08c8..ae923eb6de95 100644
--- a/drivers/scsi/libsas/sas_event.c
+++ b/drivers/scsi/libsas/sas_event.c
@@ -29,7 +29,8 @@
 
 int sas_queue_work(struct sas_ha_struct *ha, struct sas_work *sw)
 {
-	int rc = 0;
+	/* it's added to the defer_q when draining so return succeed */
+	int rc = 1;
 
 	if (!test_bit(SAS_HA_REGISTERED, &ha->state))
 		return 0;
@@ -39,24 +40,20 @@ int sas_queue_work(struct sas_ha_struct *ha, struct sas_work *sw)
 		if (list_empty(&sw->drain_node))
 			list_add_tail(&sw->drain_node, &ha->defer_q);
 	} else
-		rc = scsi_queue_work(ha->core.shost, &sw->work);
+		rc = queue_work(ha->event_q, &sw->work);
 
 	return rc;
 }
 
-static int sas_queue_event(int event, unsigned long *pending,
-			    struct sas_work *work,
+static int sas_queue_event(int event, struct sas_work *work,
 			    struct sas_ha_struct *ha)
 {
-	int rc = 0;
+	unsigned long flags;
+	int rc;
 
-	if (!test_and_set_bit(event, pending)) {
-		unsigned long flags;
-
-		spin_lock_irqsave(&ha->lock, flags);
-		rc = sas_queue_work(ha, work);
-		spin_unlock_irqrestore(&ha->lock, flags);
-	}
+	spin_lock_irqsave(&ha->lock, flags);
+	rc = sas_queue_work(ha, work);
+	spin_unlock_irqrestore(&ha->lock, flags);
 
 	return rc;
 }
@@ -64,21 +61,25 @@ static int sas_queue_event(int event, unsigned long *pending,
 
 void __sas_drain_work(struct sas_ha_struct *ha)
 {
-	struct workqueue_struct *wq = ha->core.shost->work_q;
 	struct sas_work *sw, *_sw;
+	int ret;
 
 	set_bit(SAS_HA_DRAINING, &ha->state);
 	/* flush submitters */
 	spin_lock_irq(&ha->lock);
 	spin_unlock_irq(&ha->lock);
 
-	drain_workqueue(wq);
+	drain_workqueue(ha->event_q);
+	drain_workqueue(ha->disco_q);
 
 	spin_lock_irq(&ha->lock);
 	clear_bit(SAS_HA_DRAINING, &ha->state);
 	list_for_each_entry_safe(sw, _sw, &ha->defer_q, drain_node) {
 		list_del_init(&sw->drain_node);
-		sas_queue_work(ha, sw);
+		ret = sas_queue_work(ha, sw);
+		if (ret != 1)
+			sas_free_event(to_asd_sas_event(&sw->work));
+
 	}
 	spin_unlock_irq(&ha->lock);
 }
@@ -115,33 +116,78 @@ void sas_enable_revalidation(struct sas_ha_struct *ha)
 		struct asd_sas_port *port = ha->sas_port[i];
 		const int ev = DISCE_REVALIDATE_DOMAIN;
 		struct sas_discovery *d = &port->disc;
+		struct asd_sas_phy *sas_phy;
 
 		if (!test_and_clear_bit(ev, &d->pending))
 			continue;
 
-		sas_queue_event(ev, &d->pending, &d->disc_work[ev].work, ha);
+		if (list_empty(&port->phy_list))
+			continue;
+
+		sas_phy = container_of(port->phy_list.next, struct asd_sas_phy,
+				port_phy_el);
+		ha->notify_port_event(sas_phy, PORTE_BROADCAST_RCVD);
 	}
 	mutex_unlock(&ha->disco_mutex);
 }
 
+
+static void sas_port_event_worker(struct work_struct *work)
+{
+	struct asd_sas_event *ev = to_asd_sas_event(work);
+
+	sas_port_event_fns[ev->event](work);
+	sas_free_event(ev);
+}
+
+static void sas_phy_event_worker(struct work_struct *work)
+{
+	struct asd_sas_event *ev = to_asd_sas_event(work);
+
+	sas_phy_event_fns[ev->event](work);
+	sas_free_event(ev);
+}
+
 static int sas_notify_port_event(struct asd_sas_phy *phy, enum port_event event)
 {
+	struct asd_sas_event *ev;
 	struct sas_ha_struct *ha = phy->ha;
+	int ret;
 
 	BUG_ON(event >= PORT_NUM_EVENTS);
 
-	return sas_queue_event(event, &phy->port_events_pending,
-			       &phy->port_events[event].work, ha);
+	ev = sas_alloc_event(phy);
+	if (!ev)
+		return -ENOMEM;
+
+	INIT_SAS_EVENT(ev, sas_port_event_worker, phy, event);
+
+	ret = sas_queue_event(event, &ev->work, ha);
+	if (ret != 1)
+		sas_free_event(ev);
+
+	return ret;
 }
 
 int sas_notify_phy_event(struct asd_sas_phy *phy, enum phy_event event)
 {
+	struct asd_sas_event *ev;
 	struct sas_ha_struct *ha = phy->ha;
+	int ret;
 
 	BUG_ON(event >= PHY_NUM_EVENTS);
 
-	return sas_queue_event(event, &phy->phy_events_pending,
-			       &phy->phy_events[event].work, ha);
+	ev = sas_alloc_event(phy);
+	if (!ev)
+		return -ENOMEM;
+
+	INIT_SAS_EVENT(ev, sas_phy_event_worker, phy, event);
+
+	ret = sas_queue_event(event, &ev->work, ha);
+	if (ret != 1)
+		sas_free_event(ev);
+
+	return ret;
 }
 
 int sas_init_events(struct sas_ha_struct *sas_ha)