Calling the libusb_claim_interface function returns -6 LIBUSB_ERROR_BUSY...

[yyang2021]

How do I want to stop the BUSY state, is there an available interface to call?

[mcuee]

You need to provide more info. What is the OS and what is the device?

If under Linux, you need to detach the kernel driver first.

[mcuee]

I will close this for now. Please read the FAQ first before asking questions. And please use libusb-devel mailing list for questions.

But if you think the issue is with libusb, then you can reopen this issue again and post the details.