[Bug 231076] libusb_cancel_transfer() does NOT cancel a transfer after the USB device is removed

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=231076

--- Comment #4 from Hans Petter Selasky <hselasky at FreeBSD.org> ---
>I added a call to libusb_set_debug(ctx, LIBUSB_LOG_LEVEL_DEBUG); in my code but
>I don't see more debug.
>I see that libusb uses DPRINTF(). How can I get the generated log messages?

        LIBUSB_DEBUG_NO=0,
        LIBUSB_DEBUG_FUNCTION=1,
        LIBUSB_DEBUG_TRANSFER=2,

Try using one of the above arguments when calling libusb_set_debug().

--HPS

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