[Qemu-devel] [PATCH for-2.0] iscsi: Don't set error if already set in iscsi_do_inquiry

[Fam Zheng]

This eliminates the possible assertion failure in error_setg().

Signed-off-by: Fam Zheng <address@hidden>
---
 block/iscsi.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/block/iscsi.c b/block/iscsi.c
index 21c18a3..64a509f 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);
     }
-- 
1.9.1