CVS commit: src/sys/dev/usb

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

Module Name:    src
Committed By:   riastradh
Date:           Tue Mar 29 09:08:44 UTC 2022

Modified Files:
        src/sys/dev/usb: emdtv.c emdtv_dtv.c emdtv_ir.c

Log Message:
emdtv(4): Fix issues in detach.

- Use config_detach_children, and do it up front, and handle failure
  (not relevant for yanking usb but relevant for drvctl which doesn't
  pass DETACH_FORCE).

- Fix teardown order: stop interrupts so we stop issuing new work,
  and _then_ wait for pending work to drain and destroy the
  workqueue.

- Omit needless empty  mutex_enter(lock); mutex_exit(lock)  dance
  which probably only appeared necessary because of the wrong
  teardown order.


To generate a diff of this commit:
cvs rdiff -u -r1.16 -r1.17 src/sys/dev/usb/emdtv.c \
    src/sys/dev/usb/emdtv_dtv.c
cvs rdiff -u -r1.4 -r1.5 src/sys/dev/usb/emdtv_ir.c

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