scsi: esp_scsi: Use host byte as last argument to esp_cmd_is_done()

Just pass in the host byte to esp_cmd_is_done() and set the status or
message bytes if the host byte is DID_OK.

Link: https://lore.kernel.org/r/20210113090500.129644-29-hare@suse.deAcked-by: Finn Thain <fthain@telegraphics.com.au>
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

drivers/scsi/esp_scsi.c

@@ -896,7 +896,7 @@ static void esp_put_ent(struct esp *esp, struct esp_cmd_entry *ent)
 }
 
 static void esp_cmd_is_done(struct esp *esp, struct esp_cmd_entry *ent,
-			    struct scsi_cmnd *cmd, unsigned int result)
+			    struct scsi_cmnd *cmd, unsigned char host_byte)
 {
 	struct scsi_device *dev = cmd->device;
 	int tgt = dev->id;
@@ -905,7 +905,12 @@ static void esp_cmd_is_done(struct esp *esp, struct esp_cmd_entry *ent,
 	esp->active_cmd = NULL;
 	esp_unmap_dma(esp, cmd);
 	esp_free_lun_tag(ent, dev->hostdata);
-	cmd->result = result;
+	cmd->result = 0;
+	set_host_byte(cmd, host_byte);
+	if (host_byte == DID_OK) {
+		set_msg_byte(cmd, ent->message);
+		set_status_byte(cmd, ent->status);
+	}
 
 	if (ent->eh_done) {
 		complete(ent->eh_done);
@@ -944,12 +949,6 @@ static void esp_cmd_is_done(struct esp *esp, struct esp_cmd_entry *ent,
 	esp_maybe_execute_command(esp);
 }
 
-static unsigned int compose_result(unsigned int status, unsigned int message,
-				   unsigned int driver_code)
-{
-	return (status | (message << 8) | (driver_code << 16));
-}
-
 static void esp_event_queue_full(struct esp *esp, struct esp_cmd_entry *ent)
 {
 	struct scsi_device *dev = ent->cmd->device;
@@ -1244,7 +1243,7 @@ static int esp_finish_select(struct esp *esp)
 		 * all bets are off.
 		 */
 		esp_schedule_reset(esp);
-		esp_cmd_is_done(esp, ent, cmd, (DID_ERROR << 16));
+		esp_cmd_is_done(esp, ent, cmd, DID_ERROR);
 		return 0;
 	}
 
@@ -1289,7 +1288,7 @@ static int esp_finish_select(struct esp *esp)
 		esp->target[dev->id].flags |= ESP_TGT_CHECK_NEGO;
 
 		scsi_esp_cmd(esp, ESP_CMD_ESEL);
-		esp_cmd_is_done(esp, ent, cmd, (DID_BAD_TARGET << 16));
+		esp_cmd_is_done(esp, ent, cmd, DID_BAD_TARGET);
 		return 1;
 	}
 
@@ -1874,10 +1873,7 @@ static int esp_process_event(struct esp *esp)
 				ent->flags |= ESP_CMD_FLAG_AUTOSENSE;
 				esp_autosense(esp, ent);
 			} else {
-				esp_cmd_is_done(esp, ent, cmd,
-						compose_result(ent->status,
-							       ent->message,
-							       DID_OK));
+				esp_cmd_is_done(esp, ent, cmd, DID_OK);
 			}
 		} else if (ent->message == DISCONNECT) {
 			esp_log_disconnect("Disconnecting tgt[%d] tag[%x:%x]\n",