1. 81e1042 treewide: replace with error() with pr_err() by Masahiro Yamada · Sat Sep 16 14:10:41 2017 +0900
  2. 1a54713 drivers: usb: common: add common code for usb drivers to use by Mugunthan V N · Tue Apr 12 16:01:19 2016 +0530