[Bug 256296] "No Device" error after using asynchronous API of libusb once

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=256296

Hans Petter Selasky <hselasky at FreeBSD.org> changed:

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                 CC|                            |hselasky at FreeBSD.org

--- Comment #2 from Hans Petter Selasky <hselasky at FreeBSD.org> ---
Hi,

I think this is a bug in the the application.

If you close the USB device while transfers are pending, the completion events
won't be delivered. I guess you need to wait for the pending transfers to
complete before you close the device.

--HPS

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