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

Pull SCSI fixes from James Bottomley:
 "A couple of error leg problems, one affecting scsi_debug and the other
  affecting pure SAS (i.e. not SATA) SCSI expanders"

* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
  scsi: libsas: Fix exp-attached device scan after probe failure scanned in again after probe failed
  scsi: scsi_debug: Fix create target debugfs failure

Author: torvalds

drivers/scsi/libsas/sas_internal.h

@@ -145,6 +145,20 @@ static inline void sas_fail_probe(struct domain_device *dev, const char *func, i
 		func, dev->parent ? "exp-attached" :
 		"direct-attached",
 		SAS_ADDR(dev->sas_addr), err);
+
+	/*
+	 * If the device probe failed, the expander phy attached address
+	 * needs to be reset so that the phy will not be treated as flutter
+	 * in the next revalidation
+	 */
+	if (dev->parent && !dev_is_expander(dev->dev_type)) {
+		struct sas_phy *phy = dev->phy;
+		struct domain_device *parent = dev->parent;
+		struct ex_phy *ex_phy = &parent->ex_dev.ex_phy[phy->number];
+
+		memset(ex_phy->attached_sas_addr, 0, SAS_ADDR_SIZE);
+	}
+
 	sas_unregister_dev(dev->port, dev);
 }
 

drivers/scsi/scsi_debug.c

@@ -926,6 +926,7 @@ static const int device_qfull_result =
 static const int condition_met_result = SAM_STAT_CONDITION_MET;
 
 static struct dentry *sdebug_debugfs_root;
+static ASYNC_DOMAIN_EXCLUSIVE(sdebug_async_domain);
 
 static void sdebug_err_free(struct rcu_head *head)
 {
@@ -1148,6 +1149,8 @@ static int sdebug_target_alloc(struct scsi_target *starget)
 	if (!targetip)
 		return -ENOMEM;
 
+	async_synchronize_full_domain(&sdebug_async_domain);
+
 	targetip->debugfs_entry = debugfs_create_dir(dev_name(&starget->dev),
 				sdebug_debugfs_root);
 
@@ -1174,7 +1177,8 @@ static void sdebug_target_destroy(struct scsi_target *starget)
 	targetip = (struct sdebug_target_info *)starget->hostdata;
 	if (targetip) {
 		starget->hostdata = NULL;
-		async_schedule(sdebug_tartget_cleanup_async, targetip);
+		async_schedule_domain(sdebug_tartget_cleanup_async, targetip,
+				&sdebug_async_domain);
 	}
 }