Problems with cdce/cdceem as a USB-device on R-Pi

Hans Petter Selasky hps at selasky.org
Wed Jun 3 18:14:25 UTC 2020


On 2020-06-03 19:51, Luke Ross wrote:
> cdceem0: WARNING: cdceem_bulk_read_callback: USB_ST_ERROR:
> USB_ERR_STALLED

Try to have a look at the USB traffic using:

usbdump -i usbusX -f Y -s 65536

At both client and server side. Might be a controller driver bug, or the 
chip is out of available endpoints, I.E. that you can only have either 
ethernet or serial, but not both.

--HPS


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