[Bug 272286] When unplugging USB sound card, usbconfig stops working

From: <bugzilla-noreply_at_freebsd.org>
Date: Thu, 29 Jun 2023 22:58:10 UTC 
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=272286

            Bug ID: 272286
           Summary: When unplugging USB sound card, usbconfig stops
                    working
           Product: Base System
           Version: CURRENT
          Hardware: amd64
                OS: Any
            Status: New
          Severity: Affects Many People
          Priority: ---
         Component: usb
          Assignee: usb@FreeBSD.org
          Reporter: jonasbsd@gmail.com

Dears,

I use a HyperX USB Sound Card. When I unplug the sound card the FreeBSD USB
subsystem does not work properly. When I plug the sound card back in, it
doesn't work again. And the usbconfig command stops working too.

# tail -f /var/log/messages
Jun 29 19:43:24 mithrandir kernel: pcm3: unregister: channel
pcm3:virtual:dsp3.vp2 busy (pid 84596)
Jun 29 19:43:24 mithrandir kernel: pcm3: Waiting for sound application to exit!
Jun 29 19:43:24 mithrandir kernel: pcm3: unregister: channel
pcm3:virtual:dsp3.vp2 busy (pid 84596)
Jun 29 19:43:24 mithrandir kernel: pcm3: Waiting for sound application to exit!
Jun 29 19:43:24 mithrandir kernel: pcm3: unregister: channel
pcm3:virtual:dsp3.vp2 busy (pid 84596)
Jun 29 19:43:24 mithrandir kernel: pcm3: Waiting for sound application to exit!
Jun 29 19:43:25 mithrandir kernel: pcm3: unregister: channel
pcm3:virtual:dsp3.vp2 busy (pid 84596)
Jun 29 19:43:25 mithrandir kernel: pcm3: Waiting for sound application to exit!
Jun 29 19:43:28 mithrandir kernel: pcm3: unregister: channel
pcm3:virtual:dsp3.vp2 busy (pid 84596)
Jun 29 19:43:28 mithrandir kernel: pcm3: Waiting for sound application to exit!

# usbconfig list
^C

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