From 939cd52eee70f9a620e61c797368014d1b17c58d Mon Sep 17 00:00:00 2001
From: Bart Van Assche <bvanassche@acm.org>
Date: Wed, 14 Aug 2019 23:18:37 +0000
Subject: [PATCH] scst, copy manager: Only submit INQUIRY if LUN lookup
 succeeded (merge r8503 from trunk)

git-svn-id: http://svn.code.sf.net/p/scst/svn/branches/3.3.x@8505 d57e44dd-8a1f-0410-8b47-8ef2f437770f
---
 scst/src/scst_copy_mgr.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/scst/src/scst_copy_mgr.c b/scst/src/scst_copy_mgr.c
index b87bc0035..b81b7a5a5 100644
--- a/scst/src/scst_copy_mgr.c
+++ b/scst/src/scst_copy_mgr.c
@@ -2668,6 +2668,7 @@ out:
 
 void scst_cm_update_dev(struct scst_device *dev)
 {
+	unsigned int lun;
 	int rc, res;
 
 	TRACE_ENTRY();
@@ -2685,7 +2686,11 @@ void scst_cm_update_dev(struct scst_device *dev)
 	scst_block_dev(dev);
 	spin_unlock_bh(&dev->dev_lock);
 
-	rc = scst_cm_send_init_inquiry(dev, scst_cm_get_lun(dev), NULL);
+	lun = scst_cm_get_lun(dev);
+	if (WARN_ON_ONCE(lun == SCST_MAX_LUN))
+		goto out_unblock;
+
+	rc = scst_cm_send_init_inquiry(dev, lun, NULL);
 	if (rc != 0)
 		goto out_unblock;