From cbee81f6de57ddc1b21ba28f01f6a3b5d87428a5 Mon Sep 17 00:00:00 2001
From: Fam Zheng <famz@redhat.com>
Date: Fri, 4 Apr 2014 19:53:29 +0800
Subject: [PATCH] iscsi: Don't set error if already set in iscsi_do_inquiry

This eliminates the possible assertion failure in error_setg().

Signed-off-by: Fam Zheng <famz@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
---
 block/iscsi.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/block/iscsi.c b/block/iscsi.c
index 21c18a39dc..64a509f8f4 100644
--- a/block/iscsi.c
+++ b/block/iscsi.c
@@ -1101,8 +1101,10 @@ static struct scsi_task *iscsi_do_inquiry(struct iscsi_context *iscsi, int lun,
     return task;
 
 fail:
-    error_setg(errp, "iSCSI: Inquiry command failed : %s",
-               iscsi_get_error(iscsi));
+    if (!error_is_set(errp)) {
+        error_setg(errp, "iSCSI: Inquiry command failed : %s",
+                   iscsi_get_error(iscsi));
+    }
     if (task != NULL) {
         scsi_free_scsi_task(task);
     }
-- 
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