[SCSI] qla4xxx: Fix multiple conn login event issue during session recovery.
During iscsid session recovery driver sends multiple ISCSI_CONN_STATE_LOGGED_IN event from qla4xxx_conn_start() and qla4xxx_ddb_change(), which causes iscsid to crash. Signed-off-by: NManish Rangankar <manish.rangankar@qlogic.com> Signed-off-by: NVikas Chaudhary <vikas.chaudhary@qlogic.com> Reviewed-by: NMike Christie <michaelc@cs.wisc.edu> Signed-off-by: NJames Bottomley <JBottomley@Parallels.com>
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