[libusb] submit_iso_transfer - errno : 16 , LIBUSB_ERROR_IO

[mau <abd...@ya...>]

Greetings everybody,

I am a newbie in libusb, have been trying to implement isochronous
communication to acquire data continuously from an audio device.

When I tried interrupt mode, I got no error in real time. But while I tried
to implement isochronous transfer, I have been getting a run time error :

[submit_iso_transfer] submiturb failed error -1 errno:16

I have been getting the libusb error enum printed: LIBUSB_ERROR_IO

I tried all the end point descirptor, max packet size and bLengths groups,
but the result does not change.

Might it be related to the kernel; I saw similar problems caused by the
kernel?

I have even seen, asound.state might cause a problem, because guy said that
when he deleted asound.state file, problem was solved, although his problem
was not related to libusb.

By the way, I have no kernel experience actually, :) .

If you could help me to solve this problem, I would be glad.

Thanks in advance,
Abdullah



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