---
- branch: MAIN
  date: Mon Mar 28 12:44:06 UTC 2022
  files:
  - new: '1.89'
    old: '1.88'
    path: src/sys/dev/usb/uhidev.c
    pathrev: src/sys/dev/usb/uhidev.c@1.89
    type: modified
  id: 20220328T124406Z.18ff0f97e2f0613d9a726e3104d6f3999a93a430
  log: |
    uhidev(9): Fix race between uhidev_close and uhidev_intr.

    uhidev_intr currently relies on the kernel lock to serialize access
    to struct uhidev::sc_state, but if the driver's sc_intr function
    sleeps (which it may do, even though this runs is softint context --
    it may sleep on an adaptive lock), uhidev_close might return while
    the driver's sc_intr function is still in flight.

    This avoids that race, and makes progress toward MP-safe uhidev.
  module: src
  subject: 'CVS commit: src/sys/dev/usb'
  unixtime: '1648471446'
  user: riastradh