CVS commit: src/sys/dev/usb

["Taylor R Campbell" <riastradh%netbsd.org@localhost>]

Module Name:    src
Committed By:   riastradh
Date:           Tue Sep  7 10:43:51 UTC 2021

Modified Files:
        src/sys/dev/usb: ugen.c

Log Message:
ugen(4): Use cv_wait loop for draining reference count on detach.

- Should be no need to use cv_timedwait because all users have now
  been given a wakeup (previously writers were not, so we relied on
  the timeouts to work out).

- Need to run this in a loop or else a spurious wakeup could cause us
  to free data structures before the users have actually drained.


To generate a diff of this commit:
cvs rdiff -u -r1.165 -r1.166 src/sys/dev/usb/ugen.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.