1. 3efe891 USB: add SPDX identifiers to all remaining Makefiles by Greg Kroah-Hartman · 7 years ago
  2. aeb9dd1 usb/early: Add driver for xhci debug capability by Lu Baolu · 8 years ago
  3. 0a2b8a0 usb: makefile cleanup by matt mooney · 14 years ago
  4. df6c516 USB: ehci,dbgp,early_printk: split ehci debug driver from early_printk.c by Jason Wessel · 15 years ago