CVS commit: src/sys/dev/usb

["matthew green" <mrg%netbsd.org@localhost>]

Module Name:    src
Committed By:   mrg
Date:           Mon Oct 26 12:24:10 UTC 2020

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

Log Message:
properly wait for refcounts to drain.
fixes panic at detach that jmnceill saw.

XXX: pullup-[89].


To generate a diff of this commit:
cvs rdiff -u -r1.127 -r1.128 src/sys/dev/usb/ucom.c

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