[PATCH] SCSI: Make retries obey host_self_blocked flag

The following patch against 2.6.2 will prevent the midlayer from
issuing retries if host_self_blocked is set. This was raised as an
issue here:

http://marc.theaimsgroup.com/?l=linux-scsi&m=107357742430401&w=2

drivers/scsi/scsi.c

@@ -784,7 +784,7 @@ int scsi_retry_command(struct scsi_cmnd *cmd)
          */
 	memset(cmd->sense_buffer, 0, sizeof(cmd->sense_buffer));
 
-	return scsi_dispatch_cmd(cmd);
+	return scsi_queue_insert(cmd, SCSI_MLQUEUE_EH_RETRY);
 }
 
 /*