STMPE811: I found that, in stmpe811_instanciate(), when CONFIG_STMPE811_MULTIPLE is enabled, and the call to stmpe811_checkid() fails, then the linked device list is not restored to its previous state. From Sebastien Lorquet.

drivers/input/stmpe811_base.c

@@ -339,6 +339,7 @@ STMPE811_HANDLE stmpe811_instantiate(FAR struct i2c_dev_s *dev,
   if (ret < 0)
     {
 #ifdef CONFIG_STMPE811_MULTIPLE
+      g_stmpe811list = priv->flink;
       kmm_free(priv);
 #endif
       return NULL;