[SCSI] qla2xxx: Mark a port's state as needing-rediscovery during link disruptions.

With RSCN states not being kept across qla2x00_configure_loop()
invocations, loop-resync distruptions during fabric-discovery may
cause ports to remain in a lost state.  Force state
renegotiation during a follow-on configure-loop iteration.
Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>

drivers/scsi/qla2xxx/qla_init.c

@@ -2064,8 +2064,10 @@ qla2x00_configure_loop(scsi_qla_host_t *vha)
 	if (test_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags)) {
 		if (test_bit(LOCAL_LOOP_UPDATE, &save_flags))
 			set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
-		if (test_bit(RSCN_UPDATE, &save_flags))
+		if (test_bit(RSCN_UPDATE, &save_flags)) {
 			set_bit(RSCN_UPDATE, &vha->dpc_flags);
+			vha->flags.rscn_queue_overflow = 1;
+		}
 	}
 
 	return (rval);