[SCSI] qla4xxx: cleanup function qla4xxx_process_ddb_changed

We don't need to check ddb old state we can take action
based on ddb new state.

Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>

drivers/scsi/qla4xxx/ql4_init.c

@@ -1409,7 +1409,6 @@ int qla4xxx_process_ddb_changed(struct scsi_qla_host *ha, uint32_t fw_ddb_index,
 		uint32_t state, uint32_t conn_err)
 {
 	struct ddb_entry * ddb_entry;
-	uint32_t old_fw_ddb_device_state;
 
 	/* check for out of range index */
 	if (fw_ddb_index >= MAX_DDB_ENTRIES)
@@ -1425,22 +1424,14 @@ int qla4xxx_process_ddb_changed(struct scsi_qla_host *ha, uint32_t fw_ddb_index,
 	}
 
 	/* Device already exists in our database. */
-	old_fw_ddb_device_state = ddb_entry->fw_ddb_device_state;
 	DEBUG2(printk("scsi%ld: %s DDB - old state= 0x%x, new state=0x%x for "
 		      "index [%d]\n", ha->host_no, __func__,
 		      ddb_entry->fw_ddb_device_state, state, fw_ddb_index));
-	if (old_fw_ddb_device_state == state &&
-	    state == DDB_DS_SESSION_ACTIVE) {
-		if (atomic_read(&ddb_entry->state) != DDB_STATE_ONLINE) {
-			atomic_set(&ddb_entry->state, DDB_STATE_ONLINE);
-			iscsi_unblock_session(ddb_entry->sess);
-		}
-		return QLA_SUCCESS;
-	}
 
 	ddb_entry->fw_ddb_device_state = state;
 	/* Device is back online. */
-	if (ddb_entry->fw_ddb_device_state == DDB_DS_SESSION_ACTIVE) {
+	if ((ddb_entry->fw_ddb_device_state == DDB_DS_SESSION_ACTIVE) &&
+	   (atomic_read(&ddb_entry->state) != DDB_STATE_ONLINE)) {
 		atomic_set(&ddb_entry->state, DDB_STATE_ONLINE);
 		atomic_set(&ddb_entry->relogin_retry_count, 0);
 		atomic_set(&ddb_entry->relogin_timer, 0);
@@ -1452,7 +1443,7 @@ int qla4xxx_process_ddb_changed(struct scsi_qla_host *ha, uint32_t fw_ddb_index,
 		 * Change the lun state to READY in case the lun TIMEOUT before
 		 * the device came back.
 		 */
-	} else {
+	} else if (ddb_entry->fw_ddb_device_state != DDB_DS_SESSION_ACTIVE) {
 		/* Device went away, mark device missing */
 		if (atomic_read(&ddb_entry->state) == DDB_STATE_ONLINE) {
 			DEBUG2(ql4_printk(KERN_INFO, ha, "%s mark missing "