int i2o_scsi_reply (struct i2o_controller * c, u32 m, struct i2o_message * msg);
Process reply messages (interrupts in normal scsi controller think). We can get a variety of messages to process. The normal path is scsi command completions. We must also deal with IOP failures, the reply to a bus reset and the reply to a LUN query.
Returns 0 on success and if the reply should not be flushed or > 0 on success and if the reply should be flushed. Returns negative error code on failure and if the reply should be flushed.