ha_innodb.h:

  Put the flag HA_NOT_READ_PREFIX_LAST back to index_flags: seems to fix also the LIKE ... DESC bug

sql/ha_innodb.h

@@ -81,10 +81,6 @@ class ha_innobase: public handler
 			  HA_NO_WRITE_DELAYED |
 			  HA_PRIMARY_KEY_IN_READ_INDEX |
 			  HA_DROP_BEFORE_CREATE |
-			  /* We should also list HA_NOT_READ_PREFIX_LAST
-			     here but it currently seems to break ORDER BY;
-			     until release 4.0.5 some LIKE 'abc%' ... DESC
-			     queries will not work correctly */
 			  HA_NO_PREFIX_CHAR_KEYS |
 			  HA_TABLE_SCAN_ON_INDEX),
 	  last_dup_key((uint) -1),
@@ -100,7 +96,7 @@ class ha_innobase: public handler
 	ulong index_flags(uint idx) const
 	{
 	  return (HA_READ_NEXT | HA_READ_PREV | HA_READ_ORDER |
-		  HA_KEY_READ_ONLY);
+		  HA_KEY_READ_ONLY | HA_NOT_READ_PREFIX_LAST);
 	}
   	uint max_record_length() const { return HA_MAX_REC_LENGTH; }
   	uint max_keys()          const { return MAX_KEY; }