models/stock.py

@@ -38,6 +38,22 @@ class stock_location(osv.osv):
         'warehouse_id': fields.many2one('stock.warehouse', 'Warehouse')
     }
 
+    def _product_reserve(self, cr, uid, ids, product_id, product_qty,
+                         context=None, lock=False):
+        location_id = ids and ids[0] or False
+        loc_warehouse = self.browse(cr, uid, location_id).warehouse_id
+
+        # We extract every location with the same warehouse as the move location
+        if loc_warehouse:
+            warehouse_locations_ids = self.search(
+                cr, uid, [('warehouse_id', '=', loc_warehouse.id)]
+            )
+            ids = warehouse_locations_ids or ids
+        return super(stock_location, self)._product_reserve(
+            cr, uid, ids, product_id,
+            product_qty, context=None, lock=False
+        )
+
 
 class split_in_production_lot(osv.osv_memory):
     _name = "stock.move.split"